sm-a155/a155-U-u1
1
0
Fork 0
mirror of https://github.com/physwizz/a155-U-u1.git synced 2024-11-19 13:27:49 +00:00
Code
main
a155-U-u1/kernel-5.10/drivers/net/ethernet/intel/ice/ice_main.c
physwizz 99537be4e2 first
2024-03-11 06:53:12 +11:00

6891 lines
184 KiB
C
Raw Permalink Blame History

// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2018, Intel Corporation. */
/* Intel(R) Ethernet Connection E800 Series Linux Driver */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <generated/utsrelease.h>
#include "ice.h"
#include "ice_base.h"
#include "ice_lib.h"
#include "ice_fltr.h"
#include "ice_dcb_lib.h"
#include "ice_dcb_nl.h"
#include "ice_devlink.h"
#define DRV_SUMMARY "Intel(R) Ethernet Connection E800 Series Linux Driver"
static const char ice_driver_string[] = DRV_SUMMARY;
static const char ice_copyright[] = "Copyright (c) 2018, Intel Corporation.";
/* DDP Package file located in firmware search paths (e.g. /lib/firmware/) */
#define ICE_DDP_PKG_PATH "intel/ice/ddp/"
#define ICE_DDP_PKG_FILE ICE_DDP_PKG_PATH "ice.pkg"
MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>");
MODULE_DESCRIPTION(DRV_SUMMARY);
MODULE_LICENSE("GPL v2");
MODULE_FIRMWARE(ICE_DDP_PKG_FILE);
static int debug = -1;
module_param(debug, int, 0644);
#ifndef CONFIG_DYNAMIC_DEBUG
MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all), hw debug_mask (0x8XXXXXXX)");
#else
MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all)");
#endif /* !CONFIG_DYNAMIC_DEBUG */
static struct workqueue_struct *ice_wq;
static const struct net_device_ops ice_netdev_safe_mode_ops;
static const struct net_device_ops ice_netdev_ops;
static int ice_vsi_open(struct ice_vsi *vsi);
static void ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type);
static void ice_vsi_release_all(struct ice_pf *pf);
/**
* ice_get_tx_pending - returns number of Tx descriptors not processed
* @ring: the ring of descriptors
*/
static u16 ice_get_tx_pending(struct ice_ring *ring)
{
u16 head, tail;
head = ring->next_to_clean;
tail = ring->next_to_use;
if (head != tail)
return (head < tail) ?
tail - head : (tail + ring->count - head);
return 0;
}
/**
* ice_check_for_hang_subtask - check for and recover hung queues
* @pf: pointer to PF struct
*/
static void ice_check_for_hang_subtask(struct ice_pf *pf)
{
struct ice_vsi *vsi = NULL;
struct ice_hw *hw;
unsigned int i;
int packets;
u32 v;
ice_for_each_vsi(pf, v)
if (pf->vsi[v] && pf->vsi[v]->type == ICE_VSI_PF) {
vsi = pf->vsi[v];
break;
}
if (!vsi || test_bit(__ICE_DOWN, vsi->state))
return;
if (!(vsi->netdev && netif_carrier_ok(vsi->netdev)))
return;
hw = &vsi->back->hw;
for (i = 0; i < vsi->num_txq; i++) {
struct ice_ring *tx_ring = vsi->tx_rings[i];
if (tx_ring && tx_ring->desc) {
/* If packet counter has not changed the queue is
* likely stalled, so force an interrupt for this
* queue.
*
* prev_pkt would be negative if there was no
* pending work.
*/
packets = tx_ring->stats.pkts & INT_MAX;
if (tx_ring->tx_stats.prev_pkt == packets) {
/* Trigger sw interrupt to revive the queue */
ice_trigger_sw_intr(hw, tx_ring->q_vector);
continue;
}
/* Memory barrier between read of packet count and call
* to ice_get_tx_pending()
*/
smp_rmb();
tx_ring->tx_stats.prev_pkt =
ice_get_tx_pending(tx_ring) ? packets : -1;
}
}
}
/**
* ice_init_mac_fltr - Set initial MAC filters
* @pf: board private structure
*
* Set initial set of MAC filters for PF VSI; configure filters for permanent
* address and broadcast address. If an error is encountered, netdevice will be
* unregistered.
*/
static int ice_init_mac_fltr(struct ice_pf *pf)
{
enum ice_status status;
struct ice_vsi *vsi;
u8 *perm_addr;
vsi = ice_get_main_vsi(pf);
if (!vsi)
return -EINVAL;
perm_addr = vsi->port_info->mac.perm_addr;
status = ice_fltr_add_mac_and_broadcast(vsi, perm_addr, ICE_FWD_TO_VSI);
if (!status)
return 0;
/* We aren't useful with no MAC filters, so unregister if we
* had an error
*/
if (vsi->netdev->reg_state == NETREG_REGISTERED) {
dev_err(ice_pf_to_dev(pf), "Could not add MAC filters error %s. Unregistering device\n",
ice_stat_str(status));
unregister_netdev(vsi->netdev);
free_netdev(vsi->netdev);
vsi->netdev = NULL;
}
return -EIO;
}
/**
* ice_add_mac_to_sync_list - creates list of MAC addresses to be synced
* @netdev: the net device on which the sync is happening
* @addr: MAC address to sync
*
* This is a callback function which is called by the in kernel device sync
* functions (like __dev_uc_sync, __dev_mc_sync, etc). This function only
* populates the tmp_sync_list, which is later used by ice_add_mac to add the
* MAC filters from the hardware.
*/
static int ice_add_mac_to_sync_list(struct net_device *netdev, const u8 *addr)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
if (ice_fltr_add_mac_to_list(vsi, &vsi->tmp_sync_list, addr,
ICE_FWD_TO_VSI))
return -EINVAL;
return 0;
}
/**
* ice_add_mac_to_unsync_list - creates list of MAC addresses to be unsynced
* @netdev: the net device on which the unsync is happening
* @addr: MAC address to unsync
*
* This is a callback function which is called by the in kernel device unsync
* functions (like __dev_uc_unsync, __dev_mc_unsync, etc). This function only
* populates the tmp_unsync_list, which is later used by ice_remove_mac to
* delete the MAC filters from the hardware.
*/
static int ice_add_mac_to_unsync_list(struct net_device *netdev, const u8 *addr)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
/* Under some circumstances, we might receive a request to delete our
* own device address from our uc list. Because we store the device
* address in the VSI's MAC filter list, we need to ignore such
* requests and not delete our device address from this list.
*/
if (ether_addr_equal(addr, netdev->dev_addr))
return 0;
if (ice_fltr_add_mac_to_list(vsi, &vsi->tmp_unsync_list, addr,
ICE_FWD_TO_VSI))
return -EINVAL;
return 0;
}
/**
* ice_vsi_fltr_changed - check if filter state changed
* @vsi: VSI to be checked
*
* returns true if filter state has changed, false otherwise.
*/
static bool ice_vsi_fltr_changed(struct ice_vsi *vsi)
{
return test_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags) ||
test_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags) ||
test_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags);
}
/**
* ice_cfg_promisc - Enable or disable promiscuous mode for a given PF
* @vsi: the VSI being configured
* @promisc_m: mask of promiscuous config bits
* @set_promisc: enable or disable promisc flag request
*
*/
static int ice_cfg_promisc(struct ice_vsi *vsi, u8 promisc_m, bool set_promisc)
{
struct ice_hw *hw = &vsi->back->hw;
enum ice_status status = 0;
if (vsi->type != ICE_VSI_PF)
return 0;
if (vsi->vlan_ena) {
status = ice_set_vlan_vsi_promisc(hw, vsi->idx, promisc_m,
set_promisc);
} else {
if (set_promisc)
status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m,
0);
else
status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m,
0);
}
if (status)
return -EIO;
return 0;
}
/**
* ice_vsi_sync_fltr - Update the VSI filter list to the HW
* @vsi: ptr to the VSI
*
* Push any outstanding VSI filter changes through the AdminQ.
*/
static int ice_vsi_sync_fltr(struct ice_vsi *vsi)
{
struct device *dev = ice_pf_to_dev(vsi->back);
struct net_device *netdev = vsi->netdev;
bool promisc_forced_on = false;
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
enum ice_status status = 0;
u32 changed_flags = 0;
u8 promisc_m;
int err = 0;
if (!vsi->netdev)
return -EINVAL;
while (test_and_set_bit(__ICE_CFG_BUSY, vsi->state))
usleep_range(1000, 2000);
changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
vsi->current_netdev_flags = vsi->netdev->flags;
INIT_LIST_HEAD(&vsi->tmp_sync_list);
INIT_LIST_HEAD(&vsi->tmp_unsync_list);
if (ice_vsi_fltr_changed(vsi)) {
clear_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags);
clear_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags);
clear_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags);
/* grab the netdev's addr_list_lock */
netif_addr_lock_bh(netdev);
__dev_uc_sync(netdev, ice_add_mac_to_sync_list,
ice_add_mac_to_unsync_list);
__dev_mc_sync(netdev, ice_add_mac_to_sync_list,
ice_add_mac_to_unsync_list);
/* our temp lists are populated. release lock */
netif_addr_unlock_bh(netdev);
}
/* Remove MAC addresses in the unsync list */
status = ice_fltr_remove_mac_list(vsi, &vsi->tmp_unsync_list);
ice_fltr_free_list(dev, &vsi->tmp_unsync_list);
if (status) {
netdev_err(netdev, "Failed to delete MAC filters\n");
/* if we failed because of alloc failures, just bail */
if (status == ICE_ERR_NO_MEMORY) {
err = -ENOMEM;
goto out;
}
}
/* Add MAC addresses in the sync list */
status = ice_fltr_add_mac_list(vsi, &vsi->tmp_sync_list);
ice_fltr_free_list(dev, &vsi->tmp_sync_list);
/* If filter is added successfully or already exists, do not go into
* 'if' condition and report it as error. Instead continue processing
* rest of the function.
*/
if (status && status != ICE_ERR_ALREADY_EXISTS) {
netdev_err(netdev, "Failed to add MAC filters\n");
/* If there is no more space for new umac filters, VSI
* should go into promiscuous mode. There should be some
* space reserved for promiscuous filters.
*/
if (hw->adminq.sq_last_status == ICE_AQ_RC_ENOSPC &&
!test_and_set_bit(__ICE_FLTR_OVERFLOW_PROMISC,
vsi->state)) {
promisc_forced_on = true;
netdev_warn(netdev, "Reached MAC filter limit, forcing promisc mode on VSI %d\n",
vsi->vsi_num);
} else {
err = -EIO;
goto out;
}
}
/* check for changes in promiscuous modes */
if (changed_flags & IFF_ALLMULTI) {
if (vsi->current_netdev_flags & IFF_ALLMULTI) {
if (vsi->vlan_ena)
promisc_m = ICE_MCAST_VLAN_PROMISC_BITS;
else
promisc_m = ICE_MCAST_PROMISC_BITS;
err = ice_cfg_promisc(vsi, promisc_m, true);
if (err) {
netdev_err(netdev, "Error setting Multicast promiscuous mode on VSI %i\n",
vsi->vsi_num);
vsi->current_netdev_flags &= ~IFF_ALLMULTI;
goto out_promisc;
}
} else {
/* !(vsi->current_netdev_flags & IFF_ALLMULTI) */
if (vsi->vlan_ena)
promisc_m = ICE_MCAST_VLAN_PROMISC_BITS;
else
promisc_m = ICE_MCAST_PROMISC_BITS;
err = ice_cfg_promisc(vsi, promisc_m, false);
if (err) {
netdev_err(netdev, "Error clearing Multicast promiscuous mode on VSI %i\n",
vsi->vsi_num);
vsi->current_netdev_flags |= IFF_ALLMULTI;
goto out_promisc;
}
}
}
if (((changed_flags & IFF_PROMISC) || promisc_forced_on) ||
test_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags)) {
clear_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags);
if (vsi->current_netdev_flags & IFF_PROMISC) {
/* Apply Rx filter rule to get traffic from wire */
if (!ice_is_dflt_vsi_in_use(pf->first_sw)) {
err = ice_set_dflt_vsi(pf->first_sw, vsi);
if (err && err != -EEXIST) {
netdev_err(netdev, "Error %d setting default VSI %i Rx rule\n",
err, vsi->vsi_num);
vsi->current_netdev_flags &=
~IFF_PROMISC;
goto out_promisc;
}
ice_cfg_vlan_pruning(vsi, false, false);
}
} else {
/* Clear Rx filter to remove traffic from wire */
if (ice_is_vsi_dflt_vsi(pf->first_sw, vsi)) {
err = ice_clear_dflt_vsi(pf->first_sw);
if (err) {
netdev_err(netdev, "Error %d clearing default VSI %i Rx rule\n",
err, vsi->vsi_num);
vsi->current_netdev_flags |=
IFF_PROMISC;
goto out_promisc;
}
if (vsi->num_vlan > 1)
ice_cfg_vlan_pruning(vsi, true, false);
}
}
}
goto exit;
out_promisc:
set_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags);
goto exit;
out:
/* if something went wrong then set the changed flag so we try again */
set_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags);
set_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags);
exit:
clear_bit(__ICE_CFG_BUSY, vsi->state);
return err;
}
/**
* ice_sync_fltr_subtask - Sync the VSI filter list with HW
* @pf: board private structure
*/
static void ice_sync_fltr_subtask(struct ice_pf *pf)
{
int v;
if (!pf || !(test_bit(ICE_FLAG_FLTR_SYNC, pf->flags)))
return;
clear_bit(ICE_FLAG_FLTR_SYNC, pf->flags);
ice_for_each_vsi(pf, v)
if (pf->vsi[v] && ice_vsi_fltr_changed(pf->vsi[v]) &&
ice_vsi_sync_fltr(pf->vsi[v])) {
/* come back and try again later */
set_bit(ICE_FLAG_FLTR_SYNC, pf->flags);
break;
}
}
/**
* ice_pf_dis_all_vsi - Pause all VSIs on a PF
* @pf: the PF
* @locked: is the rtnl_lock already held
*/
static void ice_pf_dis_all_vsi(struct ice_pf *pf, bool locked)
{
int v;
ice_for_each_vsi(pf, v)
if (pf->vsi[v])
ice_dis_vsi(pf->vsi[v], locked);
}
/**
* ice_prepare_for_reset - prep for the core to reset
* @pf: board private structure
*
* Inform or close all dependent features in prep for reset.
*/
static void
ice_prepare_for_reset(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
unsigned int i;
/* already prepared for reset */
if (test_bit(__ICE_PREPARED_FOR_RESET, pf->state))
return;
/* Notify VFs of impending reset */
if (ice_check_sq_alive(hw, &hw->mailboxq))
ice_vc_notify_reset(pf);
/* Disable VFs until reset is completed */
ice_for_each_vf(pf, i)
ice_set_vf_state_qs_dis(&pf->vf[i]);
/* clear SW filtering DB */
ice_clear_hw_tbls(hw);
/* disable the VSIs and their queues that are not already DOWN */
ice_pf_dis_all_vsi(pf, false);
if (hw->port_info)
ice_sched_clear_port(hw->port_info);
ice_shutdown_all_ctrlq(hw);
set_bit(__ICE_PREPARED_FOR_RESET, pf->state);
}
/**
* ice_do_reset - Initiate one of many types of resets
* @pf: board private structure
* @reset_type: reset type requested
* before this function was called.
*/
static void ice_do_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
{
struct device *dev = ice_pf_to_dev(pf);
struct ice_hw *hw = &pf->hw;
dev_dbg(dev, "reset_type 0x%x requested\n", reset_type);
ice_prepare_for_reset(pf);
/* trigger the reset */
if (ice_reset(hw, reset_type)) {
dev_err(dev, "reset %d failed\n", reset_type);
set_bit(__ICE_RESET_FAILED, pf->state);
clear_bit(__ICE_RESET_OICR_RECV, pf->state);
clear_bit(__ICE_PREPARED_FOR_RESET, pf->state);
clear_bit(__ICE_PFR_REQ, pf->state);
clear_bit(__ICE_CORER_REQ, pf->state);
clear_bit(__ICE_GLOBR_REQ, pf->state);
return;
}
/* PFR is a bit of a special case because it doesn't result in an OICR
* interrupt. So for PFR, rebuild after the reset and clear the reset-
* associated state bits.
*/
if (reset_type == ICE_RESET_PFR) {
pf->pfr_count++;
ice_rebuild(pf, reset_type);
clear_bit(__ICE_PREPARED_FOR_RESET, pf->state);
clear_bit(__ICE_PFR_REQ, pf->state);
ice_reset_all_vfs(pf, true);
}
}
/**
* ice_reset_subtask - Set up for resetting the device and driver
* @pf: board private structure
*/
static void ice_reset_subtask(struct ice_pf *pf)
{
enum ice_reset_req reset_type = ICE_RESET_INVAL;
/* When a CORER/GLOBR/EMPR is about to happen, the hardware triggers an
* OICR interrupt. The OICR handler (ice_misc_intr) determines what type
* of reset is pending and sets bits in pf->state indicating the reset
* type and __ICE_RESET_OICR_RECV. So, if the latter bit is set
* prepare for pending reset if not already (for PF software-initiated
* global resets the software should already be prepared for it as
* indicated by __ICE_PREPARED_FOR_RESET; for global resets initiated
* by firmware or software on other PFs, that bit is not set so prepare
* for the reset now), poll for reset done, rebuild and return.
*/
if (test_bit(__ICE_RESET_OICR_RECV, pf->state)) {
/* Perform the largest reset requested */
if (test_and_clear_bit(__ICE_CORER_RECV, pf->state))
reset_type = ICE_RESET_CORER;
if (test_and_clear_bit(__ICE_GLOBR_RECV, pf->state))
reset_type = ICE_RESET_GLOBR;
if (test_and_clear_bit(__ICE_EMPR_RECV, pf->state))
reset_type = ICE_RESET_EMPR;
/* return if no valid reset type requested */
if (reset_type == ICE_RESET_INVAL)
return;
ice_prepare_for_reset(pf);
/* make sure we are ready to rebuild */
if (ice_check_reset(&pf->hw)) {
set_bit(__ICE_RESET_FAILED, pf->state);
} else {
/* done with reset. start rebuild */
pf->hw.reset_ongoing = false;
ice_rebuild(pf, reset_type);
/* clear bit to resume normal operations, but
* ICE_NEEDS_RESTART bit is set in case rebuild failed
*/
clear_bit(__ICE_RESET_OICR_RECV, pf->state);
clear_bit(__ICE_PREPARED_FOR_RESET, pf->state);
clear_bit(__ICE_PFR_REQ, pf->state);
clear_bit(__ICE_CORER_REQ, pf->state);
clear_bit(__ICE_GLOBR_REQ, pf->state);
ice_reset_all_vfs(pf, true);
}
return;
}
/* No pending resets to finish processing. Check for new resets */
if (test_bit(__ICE_PFR_REQ, pf->state))
reset_type = ICE_RESET_PFR;
if (test_bit(__ICE_CORER_REQ, pf->state))
reset_type = ICE_RESET_CORER;
if (test_bit(__ICE_GLOBR_REQ, pf->state))
reset_type = ICE_RESET_GLOBR;
/* If no valid reset type requested just return */
if (reset_type == ICE_RESET_INVAL)
return;
/* reset if not already down or busy */
if (!test_bit(__ICE_DOWN, pf->state) &&
!test_bit(__ICE_CFG_BUSY, pf->state)) {
ice_do_reset(pf, reset_type);
}
}
/**
* ice_print_topo_conflict - print topology conflict message
* @vsi: the VSI whose topology status is being checked
*/
static void ice_print_topo_conflict(struct ice_vsi *vsi)
{
switch (vsi->port_info->phy.link_info.topo_media_conflict) {
case ICE_AQ_LINK_TOPO_CONFLICT:
case ICE_AQ_LINK_MEDIA_CONFLICT:
case ICE_AQ_LINK_TOPO_UNREACH_PRT:
case ICE_AQ_LINK_TOPO_UNDRUTIL_PRT:
case ICE_AQ_LINK_TOPO_UNDRUTIL_MEDIA:
netdev_info(vsi->netdev, "Possible mis-configuration of the Ethernet port detected, please use the Intel(R) Ethernet Port Configuration Tool application to address the issue.\n");
break;
case ICE_AQ_LINK_TOPO_UNSUPP_MEDIA:
netdev_info(vsi->netdev, "Rx/Tx is disabled on this device because an unsupported module type was detected. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
break;
default:
break;
}
}
/**
* ice_print_link_msg - print link up or down message
* @vsi: the VSI whose link status is being queried
* @isup: boolean for if the link is now up or down
*/
void ice_print_link_msg(struct ice_vsi *vsi, bool isup)
{
struct ice_aqc_get_phy_caps_data *caps;
const char *an_advertised;
enum ice_status status;
const char *fec_req;
const char *speed;
const char *fec;
const char *fc;
const char *an;
if (!vsi)
return;
if (vsi->current_isup == isup)
return;
vsi->current_isup = isup;
if (!isup) {
netdev_info(vsi->netdev, "NIC Link is Down\n");
return;
}
switch (vsi->port_info->phy.link_info.link_speed) {
case ICE_AQ_LINK_SPEED_100GB:
speed = "100 G";
break;
case ICE_AQ_LINK_SPEED_50GB:
speed = "50 G";
break;
case ICE_AQ_LINK_SPEED_40GB:
speed = "40 G";
break;
case ICE_AQ_LINK_SPEED_25GB:
speed = "25 G";
break;
case ICE_AQ_LINK_SPEED_20GB:
speed = "20 G";
break;
case ICE_AQ_LINK_SPEED_10GB:
speed = "10 G";
break;
case ICE_AQ_LINK_SPEED_5GB:
speed = "5 G";
break;
case ICE_AQ_LINK_SPEED_2500MB:
speed = "2.5 G";
break;
case ICE_AQ_LINK_SPEED_1000MB:
speed = "1 G";
break;
case ICE_AQ_LINK_SPEED_100MB:
speed = "100 M";
break;
default:
speed = "Unknown";
break;
}
switch (vsi->port_info->fc.current_mode) {
case ICE_FC_FULL:
fc = "Rx/Tx";
break;
case ICE_FC_TX_PAUSE:
fc = "Tx";
break;
case ICE_FC_RX_PAUSE:
fc = "Rx";
break;
case ICE_FC_NONE:
fc = "None";
break;
default:
fc = "Unknown";
break;
}
/* Get FEC mode based on negotiated link info */
switch (vsi->port_info->phy.link_info.fec_info) {
case ICE_AQ_LINK_25G_RS_528_FEC_EN:
case ICE_AQ_LINK_25G_RS_544_FEC_EN:
fec = "RS-FEC";
break;
case ICE_AQ_LINK_25G_KR_FEC_EN:
fec = "FC-FEC/BASE-R";
break;
default:
fec = "NONE";
break;
}
/* check if autoneg completed, might be false due to not supported */
if (vsi->port_info->phy.link_info.an_info & ICE_AQ_AN_COMPLETED)
an = "True";
else
an = "False";
/* Get FEC mode requested based on PHY caps last SW configuration */
caps = kzalloc(sizeof(*caps), GFP_KERNEL);
if (!caps) {
fec_req = "Unknown";
an_advertised = "Unknown";
goto done;
}
status = ice_aq_get_phy_caps(vsi->port_info, false,
ICE_AQC_REPORT_ACTIVE_CFG, caps, NULL);
if (status)
netdev_info(vsi->netdev, "Get phy capability failed.\n");
an_advertised = ice_is_phy_caps_an_enabled(caps) ? "On" : "Off";
if (caps->link_fec_options & ICE_AQC_PHY_FEC_25G_RS_528_REQ ||
caps->link_fec_options & ICE_AQC_PHY_FEC_25G_RS_544_REQ)
fec_req = "RS-FEC";
else if (caps->link_fec_options & ICE_AQC_PHY_FEC_10G_KR_40G_KR4_REQ ||
caps->link_fec_options & ICE_AQC_PHY_FEC_25G_KR_REQ)
fec_req = "FC-FEC/BASE-R";
else
fec_req = "NONE";
kfree(caps);
done:
netdev_info(vsi->netdev, "NIC Link is up %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg Advertised: %s, Autoneg Negotiated: %s, Flow Control: %s\n",
speed, fec_req, fec, an_advertised, an, fc);
ice_print_topo_conflict(vsi);
}
/**
* ice_vsi_link_event - update the VSI's netdev
* @vsi: the VSI on which the link event occurred
* @link_up: whether or not the VSI needs to be set up or down
*/
static void ice_vsi_link_event(struct ice_vsi *vsi, bool link_up)
{
if (!vsi)
return;
if (test_bit(__ICE_DOWN, vsi->state) || !vsi->netdev)
return;
if (vsi->type == ICE_VSI_PF) {
if (link_up == netif_carrier_ok(vsi->netdev))
return;
if (link_up) {
netif_carrier_on(vsi->netdev);
netif_tx_wake_all_queues(vsi->netdev);
} else {
netif_carrier_off(vsi->netdev);
netif_tx_stop_all_queues(vsi->netdev);
}
}
}
/**
* ice_set_dflt_mib - send a default config MIB to the FW
* @pf: private PF struct
*
* This function sends a default configuration MIB to the FW.
*
* If this function errors out at any point, the driver is still able to
* function. The main impact is that LFC may not operate as expected.
* Therefore an error state in this function should be treated with a DBG
* message and continue on with driver rebuild/reenable.
*/
static void ice_set_dflt_mib(struct ice_pf *pf)
{
struct device *dev = ice_pf_to_dev(pf);
u8 mib_type, *buf, *lldpmib = NULL;
u16 len, typelen, offset = 0;
struct ice_lldp_org_tlv *tlv;
struct ice_hw *hw;
u32 ouisubtype;
if (!pf) {
dev_dbg(dev, "%s NULL pf pointer\n", __func__);
return;
}
hw = &pf->hw;
mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
lldpmib = kzalloc(ICE_LLDPDU_SIZE, GFP_KERNEL);
if (!lldpmib) {
dev_dbg(dev, "%s Failed to allocate MIB memory\n",
__func__);
return;
}
/* Add ETS CFG TLV */
tlv = (struct ice_lldp_org_tlv *)lldpmib;
typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
ICE_IEEE_ETS_TLV_LEN);
tlv->typelen = htons(typelen);
ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
ICE_IEEE_SUBTYPE_ETS_CFG);
tlv->ouisubtype = htonl(ouisubtype);
buf = tlv->tlvinfo;
buf[0] = 0;
/* ETS CFG all UPs map to TC 0. Next 4 (1 - 4) Octets = 0.
* Octets 5 - 12 are BW values, set octet 5 to 100% BW.
* Octets 13 - 20 are TSA values - leave as zeros
*/
buf[5] = 0x64;
len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
offset += len + 2;
tlv = (struct ice_lldp_org_tlv *)
((char *)tlv + sizeof(tlv->typelen) + len);
/* Add ETS REC TLV */
buf = tlv->tlvinfo;
tlv->typelen = htons(typelen);
ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
ICE_IEEE_SUBTYPE_ETS_REC);
tlv->ouisubtype = htonl(ouisubtype);
/* First octet of buf is reserved
* Octets 1 - 4 map UP to TC - all UPs map to zero
* Octets 5 - 12 are BW values - set TC 0 to 100%.
* Octets 13 - 20 are TSA value - leave as zeros
*/
buf[5] = 0x64;
offset += len + 2;
tlv = (struct ice_lldp_org_tlv *)
((char *)tlv + sizeof(tlv->typelen) + len);
/* Add PFC CFG TLV */
typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
ICE_IEEE_PFC_TLV_LEN);
tlv->typelen = htons(typelen);
ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
ICE_IEEE_SUBTYPE_PFC_CFG);
tlv->ouisubtype = htonl(ouisubtype);
/* Octet 1 left as all zeros - PFC disabled */
buf[0] = 0x08;
len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
offset += len + 2;
if (ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, offset, NULL))
dev_dbg(dev, "%s Failed to set default LLDP MIB\n", __func__);
kfree(lldpmib);
}
/**
* ice_link_event - process the link event
* @pf: PF that the link event is associated with
* @pi: port_info for the port that the link event is associated with
* @link_up: true if the physical link is up and false if it is down
* @link_speed: current link speed received from the link event
*
* Returns 0 on success and negative on failure
*/
static int
ice_link_event(struct ice_pf *pf, struct ice_port_info *pi, bool link_up,
u16 link_speed)
{
struct device *dev = ice_pf_to_dev(pf);
struct ice_phy_info *phy_info;
struct ice_vsi *vsi;
u16 old_link_speed;
bool old_link;
int result;
phy_info = &pi->phy;
phy_info->link_info_old = phy_info->link_info;
old_link = !!(phy_info->link_info_old.link_info & ICE_AQ_LINK_UP);
old_link_speed = phy_info->link_info_old.link_speed;
/* update the link info structures and re-enable link events,
* don't bail on failure due to other book keeping needed
*/
result = ice_update_link_info(pi);
if (result)
dev_dbg(dev, "Failed to update link status and re-enable link events for port %d\n",
pi->lport);
/* Check if the link state is up after updating link info, and treat
* this event as an UP event since the link is actually UP now.
*/
if (phy_info->link_info.link_info & ICE_AQ_LINK_UP)
link_up = true;
vsi = ice_get_main_vsi(pf);
if (!vsi || !vsi->port_info)
return -EINVAL;
/* turn off PHY if media was removed */
if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags) &&
!(pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE)) {
set_bit(ICE_FLAG_NO_MEDIA, pf->flags);
result = ice_aq_set_link_restart_an(pi, false, NULL);
if (result) {
dev_dbg(dev, "Failed to set link down, VSI %d error %d\n",
vsi->vsi_num, result);
return result;
}
}
/* if the old link up/down and speed is the same as the new */
if (link_up == old_link && link_speed == old_link_speed)
return result;
if (ice_is_dcb_active(pf)) {
if (test_bit(ICE_FLAG_DCB_ENA, pf->flags))
ice_dcb_rebuild(pf);
} else {
if (link_up)
ice_set_dflt_mib(pf);
}
ice_vsi_link_event(vsi, link_up);
ice_print_link_msg(vsi, link_up);
ice_vc_notify_link_state(pf);
return result;
}
/**
* ice_watchdog_subtask - periodic tasks not using event driven scheduling
* @pf: board private structure
*/
static void ice_watchdog_subtask(struct ice_pf *pf)
{
int i;
/* if interface is down do nothing */
if (test_bit(__ICE_DOWN, pf->state) ||
test_bit(__ICE_CFG_BUSY, pf->state))
return;
/* make sure we don't do these things too often */
if (time_before(jiffies,
pf->serv_tmr_prev + pf->serv_tmr_period))
return;
pf->serv_tmr_prev = jiffies;
/* Update the stats for active netdevs so the network stack
* can look at updated numbers whenever it cares to
*/
ice_update_pf_stats(pf);
ice_for_each_vsi(pf, i)
if (pf->vsi[i] && pf->vsi[i]->netdev)
ice_update_vsi_stats(pf->vsi[i]);
}
/**
* ice_init_link_events - enable/initialize link events
* @pi: pointer to the port_info instance
*
* Returns -EIO on failure, 0 on success
*/
static int ice_init_link_events(struct ice_port_info *pi)
{
u16 mask;
mask = ~((u16)(ICE_AQ_LINK_EVENT_UPDOWN | ICE_AQ_LINK_EVENT_MEDIA_NA |
ICE_AQ_LINK_EVENT_MODULE_QUAL_FAIL));
if (ice_aq_set_event_mask(pi->hw, pi->lport, mask, NULL)) {
dev_dbg(ice_hw_to_dev(pi->hw), "Failed to set link event mask for port %d\n",
pi->lport);
return -EIO;
}
if (ice_aq_get_link_info(pi, true, NULL, NULL)) {
dev_dbg(ice_hw_to_dev(pi->hw), "Failed to enable link events for port %d\n",
pi->lport);
return -EIO;
}
return 0;
}
/**
* ice_handle_link_event - handle link event via ARQ
* @pf: PF that the link event is associated with
* @event: event structure containing link status info
*/
static int
ice_handle_link_event(struct ice_pf *pf, struct ice_rq_event_info *event)
{
struct ice_aqc_get_link_status_data *link_data;
struct ice_port_info *port_info;
int status;
link_data = (struct ice_aqc_get_link_status_data *)event->msg_buf;
port_info = pf->hw.port_info;
if (!port_info)
return -EINVAL;
status = ice_link_event(pf, port_info,
!!(link_data->link_info & ICE_AQ_LINK_UP),
le16_to_cpu(link_data->link_speed));
if (status)
dev_dbg(ice_pf_to_dev(pf), "Could not process link event, error %d\n",
status);
return status;
}
enum ice_aq_task_state {
ICE_AQ_TASK_WAITING = 0,
ICE_AQ_TASK_COMPLETE,
ICE_AQ_TASK_CANCELED,
};
struct ice_aq_task {
struct hlist_node entry;
u16 opcode;
struct ice_rq_event_info *event;
enum ice_aq_task_state state;
};
/**
* ice_wait_for_aq_event - Wait for an AdminQ event from firmware
* @pf: pointer to the PF private structure
* @opcode: the opcode to wait for
* @timeout: how long to wait, in jiffies
* @event: storage for the event info
*
* Waits for a specific AdminQ completion event on the ARQ for a given PF. The
* current thread will be put to sleep until the specified event occurs or
* until the given timeout is reached.
*
* To obtain only the descriptor contents, pass an event without an allocated
* msg_buf. If the complete data buffer is desired, allocate the
* event->msg_buf with enough space ahead of time.
*
* Returns: zero on success, or a negative error code on failure.
*/
int ice_aq_wait_for_event(struct ice_pf *pf, u16 opcode, unsigned long timeout,
struct ice_rq_event_info *event)
{
struct device *dev = ice_pf_to_dev(pf);
struct ice_aq_task *task;
unsigned long start;
long ret;
int err;
task = kzalloc(sizeof(*task), GFP_KERNEL);
if (!task)
return -ENOMEM;
INIT_HLIST_NODE(&task->entry);
task->opcode = opcode;
task->event = event;
task->state = ICE_AQ_TASK_WAITING;
spin_lock_bh(&pf->aq_wait_lock);
hlist_add_head(&task->entry, &pf->aq_wait_list);
spin_unlock_bh(&pf->aq_wait_lock);
start = jiffies;
ret = wait_event_interruptible_timeout(pf->aq_wait_queue, task->state,
timeout);
switch (task->state) {
case ICE_AQ_TASK_WAITING:
err = ret < 0 ? ret : -ETIMEDOUT;
break;
case ICE_AQ_TASK_CANCELED:
err = ret < 0 ? ret : -ECANCELED;
break;
case ICE_AQ_TASK_COMPLETE:
err = ret < 0 ? ret : 0;
break;
default:
WARN(1, "Unexpected AdminQ wait task state %u", task->state);
err = -EINVAL;
break;
}
dev_dbg(dev, "Waited %u msecs (max %u msecs) for firmware response to op 0x%04x\n",
jiffies_to_msecs(jiffies - start),
jiffies_to_msecs(timeout),
opcode);
spin_lock_bh(&pf->aq_wait_lock);
hlist_del(&task->entry);
spin_unlock_bh(&pf->aq_wait_lock);
kfree(task);
return err;
}
/**
* ice_aq_check_events - Check if any thread is waiting for an AdminQ event
* @pf: pointer to the PF private structure
* @opcode: the opcode of the event
* @event: the event to check
*
* Loops over the current list of pending threads waiting for an AdminQ event.
* For each matching task, copy the contents of the event into the task
* structure and wake up the thread.
*
* If multiple threads wait for the same opcode, they will all be woken up.
*
* Note that event->msg_buf will only be duplicated if the event has a buffer
* with enough space already allocated. Otherwise, only the descriptor and
* message length will be copied.
*
* Returns: true if an event was found, false otherwise
*/
static void ice_aq_check_events(struct ice_pf *pf, u16 opcode,
struct ice_rq_event_info *event)
{
struct ice_aq_task *task;
bool found = false;
spin_lock_bh(&pf->aq_wait_lock);
hlist_for_each_entry(task, &pf->aq_wait_list, entry) {
if (task->state || task->opcode != opcode)
continue;
memcpy(&task->event->desc, &event->desc, sizeof(event->desc));
task->event->msg_len = event->msg_len;
/* Only copy the data buffer if a destination was set */
if (task->event->msg_buf &&
task->event->buf_len > event->buf_len) {
memcpy(task->event->msg_buf, event->msg_buf,
event->buf_len);
task->event->buf_len = event->buf_len;
}
task->state = ICE_AQ_TASK_COMPLETE;
found = true;
}
spin_unlock_bh(&pf->aq_wait_lock);
if (found)
wake_up(&pf->aq_wait_queue);
}
/**
* ice_aq_cancel_waiting_tasks - Immediately cancel all waiting tasks
* @pf: the PF private structure
*
* Set all waiting tasks to ICE_AQ_TASK_CANCELED, and wake up their threads.
* This will then cause ice_aq_wait_for_event to exit with -ECANCELED.
*/
static void ice_aq_cancel_waiting_tasks(struct ice_pf *pf)
{
struct ice_aq_task *task;
spin_lock_bh(&pf->aq_wait_lock);
hlist_for_each_entry(task, &pf->aq_wait_list, entry)
task->state = ICE_AQ_TASK_CANCELED;
spin_unlock_bh(&pf->aq_wait_lock);
wake_up(&pf->aq_wait_queue);
}
/**
* __ice_clean_ctrlq - helper function to clean controlq rings
* @pf: ptr to struct ice_pf
* @q_type: specific Control queue type
*/
static int __ice_clean_ctrlq(struct ice_pf *pf, enum ice_ctl_q q_type)
{
struct device *dev = ice_pf_to_dev(pf);
struct ice_rq_event_info event;
struct ice_hw *hw = &pf->hw;
struct ice_ctl_q_info *cq;
u16 pending, i = 0;
const char *qtype;
u32 oldval, val;
/* Do not clean control queue if/when PF reset fails */
if (test_bit(__ICE_RESET_FAILED, pf->state))
return 0;
switch (q_type) {
case ICE_CTL_Q_ADMIN:
cq = &hw->adminq;
qtype = "Admin";
break;
case ICE_CTL_Q_MAILBOX:
cq = &hw->mailboxq;
qtype = "Mailbox";
break;
default:
dev_warn(dev, "Unknown control queue type 0x%x\n", q_type);
return 0;
}
/* check for error indications - PF_xx_AxQLEN register layout for
* FW/MBX/SB are identical so just use defines for PF_FW_AxQLEN.
*/
val = rd32(hw, cq->rq.len);
if (val & (PF_FW_ARQLEN_ARQVFE_M | PF_FW_ARQLEN_ARQOVFL_M |
PF_FW_ARQLEN_ARQCRIT_M)) {
oldval = val;
if (val & PF_FW_ARQLEN_ARQVFE_M)
dev_dbg(dev, "%s Receive Queue VF Error detected\n",
qtype);
if (val & PF_FW_ARQLEN_ARQOVFL_M) {
dev_dbg(dev, "%s Receive Queue Overflow Error detected\n",
qtype);
}
if (val & PF_FW_ARQLEN_ARQCRIT_M)
dev_dbg(dev, "%s Receive Queue Critical Error detected\n",
qtype);
val &= ~(PF_FW_ARQLEN_ARQVFE_M | PF_FW_ARQLEN_ARQOVFL_M |
PF_FW_ARQLEN_ARQCRIT_M);
if (oldval != val)
wr32(hw, cq->rq.len, val);
}
val = rd32(hw, cq->sq.len);
if (val & (PF_FW_ATQLEN_ATQVFE_M | PF_FW_ATQLEN_ATQOVFL_M |
PF_FW_ATQLEN_ATQCRIT_M)) {
oldval = val;
if (val & PF_FW_ATQLEN_ATQVFE_M)
dev_dbg(dev, "%s Send Queue VF Error detected\n",
qtype);
if (val & PF_FW_ATQLEN_ATQOVFL_M) {
dev_dbg(dev, "%s Send Queue Overflow Error detected\n",
qtype);
}
if (val & PF_FW_ATQLEN_ATQCRIT_M)
dev_dbg(dev, "%s Send Queue Critical Error detected\n",
qtype);
val &= ~(PF_FW_ATQLEN_ATQVFE_M | PF_FW_ATQLEN_ATQOVFL_M |
PF_FW_ATQLEN_ATQCRIT_M);
if (oldval != val)
wr32(hw, cq->sq.len, val);
}
event.buf_len = cq->rq_buf_size;
event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
if (!event.msg_buf)
return 0;
do {
enum ice_status ret;
u16 opcode;
ret = ice_clean_rq_elem(hw, cq, &event, &pending);
if (ret == ICE_ERR_AQ_NO_WORK)
break;
if (ret) {
dev_err(dev, "%s Receive Queue event error %s\n", qtype,
ice_stat_str(ret));
break;
}
opcode = le16_to_cpu(event.desc.opcode);
/* Notify any thread that might be waiting for this event */
ice_aq_check_events(pf, opcode, &event);
switch (opcode) {
case ice_aqc_opc_get_link_status:
if (ice_handle_link_event(pf, &event))
dev_err(dev, "Could not handle link event\n");
break;
case ice_aqc_opc_event_lan_overflow:
ice_vf_lan_overflow_event(pf, &event);
break;
case ice_mbx_opc_send_msg_to_pf:
ice_vc_process_vf_msg(pf, &event);
break;
case ice_aqc_opc_fw_logging:
ice_output_fw_log(hw, &event.desc, event.msg_buf);
break;
case ice_aqc_opc_lldp_set_mib_change:
ice_dcb_process_lldp_set_mib_change(pf, &event);
break;
default:
dev_dbg(dev, "%s Receive Queue unknown event 0x%04x ignored\n",
qtype, opcode);
break;
}
} while (pending && (i++ < ICE_DFLT_IRQ_WORK));
kfree(event.msg_buf);
return pending && (i == ICE_DFLT_IRQ_WORK);
}
/**
* ice_ctrlq_pending - check if there is a difference between ntc and ntu
* @hw: pointer to hardware info
* @cq: control queue information
*
* returns true if there are pending messages in a queue, false if there aren't
*/
static bool ice_ctrlq_pending(struct ice_hw *hw, struct ice_ctl_q_info *cq)
{
u16 ntu;
ntu = (u16)(rd32(hw, cq->rq.head) & cq->rq.head_mask);
return cq->rq.next_to_clean != ntu;
}
/**
* ice_clean_adminq_subtask - clean the AdminQ rings
* @pf: board private structure
*/
static void ice_clean_adminq_subtask(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
if (!test_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state))
return;
if (__ice_clean_ctrlq(pf, ICE_CTL_Q_ADMIN))
return;
clear_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state);
/* There might be a situation where new messages arrive to a control
* queue between processing the last message and clearing the
* EVENT_PENDING bit. So before exiting, check queue head again (using
* ice_ctrlq_pending) and process new messages if any.
*/
if (ice_ctrlq_pending(hw, &hw->adminq))
__ice_clean_ctrlq(pf, ICE_CTL_Q_ADMIN);
ice_flush(hw);
}
/**
* ice_clean_mailboxq_subtask - clean the MailboxQ rings
* @pf: board private structure
*/
static void ice_clean_mailboxq_subtask(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
if (!test_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state))
return;
if (__ice_clean_ctrlq(pf, ICE_CTL_Q_MAILBOX))
return;
clear_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state);
if (ice_ctrlq_pending(hw, &hw->mailboxq))
__ice_clean_ctrlq(pf, ICE_CTL_Q_MAILBOX);
ice_flush(hw);
}
/**
* ice_service_task_schedule - schedule the service task to wake up
* @pf: board private structure
*
* If not already scheduled, this puts the task into the work queue.
*/
void ice_service_task_schedule(struct ice_pf *pf)
{
if (!test_bit(__ICE_SERVICE_DIS, pf->state) &&
!test_and_set_bit(__ICE_SERVICE_SCHED, pf->state) &&
!test_bit(__ICE_NEEDS_RESTART, pf->state))
queue_work(ice_wq, &pf->serv_task);
}
/**
* ice_service_task_complete - finish up the service task
* @pf: board private structure
*/
static void ice_service_task_complete(struct ice_pf *pf)
{
WARN_ON(!test_bit(__ICE_SERVICE_SCHED, pf->state));
/* force memory (pf->state) to sync before next service task */
smp_mb__before_atomic();
clear_bit(__ICE_SERVICE_SCHED, pf->state);
}
/**
* ice_service_task_stop - stop service task and cancel works
* @pf: board private structure
*
* Return 0 if the __ICE_SERVICE_DIS bit was not already set,
* 1 otherwise.
*/
static int ice_service_task_stop(struct ice_pf *pf)
{
int ret;
ret = test_and_set_bit(__ICE_SERVICE_DIS, pf->state);
if (pf->serv_tmr.function)
del_timer_sync(&pf->serv_tmr);
if (pf->serv_task.func)
cancel_work_sync(&pf->serv_task);
clear_bit(__ICE_SERVICE_SCHED, pf->state);
return ret;
}
/**
* ice_service_task_restart - restart service task and schedule works
* @pf: board private structure
*
* This function is needed for suspend and resume works (e.g WoL scenario)
*/
static void ice_service_task_restart(struct ice_pf *pf)
{
clear_bit(__ICE_SERVICE_DIS, pf->state);
ice_service_task_schedule(pf);
}
/**
* ice_service_timer - timer callback to schedule service task
* @t: pointer to timer_list
*/
static void ice_service_timer(struct timer_list *t)
{
struct ice_pf *pf = from_timer(pf, t, serv_tmr);
mod_timer(&pf->serv_tmr, round_jiffies(pf->serv_tmr_period + jiffies));
ice_service_task_schedule(pf);
}
/**
* ice_handle_mdd_event - handle malicious driver detect event
* @pf: pointer to the PF structure
*
* Called from service task. OICR interrupt handler indicates MDD event.
* VF MDD logging is guarded by net_ratelimit. Additional PF and VF log
* messages are wrapped by netif_msg_[rx|tx]_err. Since VF Rx MDD events
* disable the queue, the PF can be configured to reset the VF using ethtool
* private flag mdd-auto-reset-vf.
*/
static void ice_handle_mdd_event(struct ice_pf *pf)
{
struct device *dev = ice_pf_to_dev(pf);
struct ice_hw *hw = &pf->hw;
unsigned int i;
u32 reg;
if (!test_and_clear_bit(__ICE_MDD_EVENT_PENDING, pf->state)) {
/* Since the VF MDD event logging is rate limited, check if
* there are pending MDD events.
*/
ice_print_vfs_mdd_events(pf);
return;
}
/* find what triggered an MDD event */
reg = rd32(hw, GL_MDET_TX_PQM);
if (reg & GL_MDET_TX_PQM_VALID_M) {
u8 pf_num = (reg & GL_MDET_TX_PQM_PF_NUM_M) >>
GL_MDET_TX_PQM_PF_NUM_S;
u16 vf_num = (reg & GL_MDET_TX_PQM_VF_NUM_M) >>
GL_MDET_TX_PQM_VF_NUM_S;
u8 event = (reg & GL_MDET_TX_PQM_MAL_TYPE_M) >>
GL_MDET_TX_PQM_MAL_TYPE_S;
u16 queue = ((reg & GL_MDET_TX_PQM_QNUM_M) >>
GL_MDET_TX_PQM_QNUM_S);
if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event %d on TX queue %d PF# %d VF# %d\n",
event, queue, pf_num, vf_num);
wr32(hw, GL_MDET_TX_PQM, 0xffffffff);
}
reg = rd32(hw, GL_MDET_TX_TCLAN);
if (reg & GL_MDET_TX_TCLAN_VALID_M) {
u8 pf_num = (reg & GL_MDET_TX_TCLAN_PF_NUM_M) >>
GL_MDET_TX_TCLAN_PF_NUM_S;
u16 vf_num = (reg & GL_MDET_TX_TCLAN_VF_NUM_M) >>
GL_MDET_TX_TCLAN_VF_NUM_S;
u8 event = (reg & GL_MDET_TX_TCLAN_MAL_TYPE_M) >>
GL_MDET_TX_TCLAN_MAL_TYPE_S;
u16 queue = ((reg & GL_MDET_TX_TCLAN_QNUM_M) >>
GL_MDET_TX_TCLAN_QNUM_S);
if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event %d on TX queue %d PF# %d VF# %d\n",
event, queue, pf_num, vf_num);
wr32(hw, GL_MDET_TX_TCLAN, 0xffffffff);
}
reg = rd32(hw, GL_MDET_RX);
if (reg & GL_MDET_RX_VALID_M) {
u8 pf_num = (reg & GL_MDET_RX_PF_NUM_M) >>
GL_MDET_RX_PF_NUM_S;
u16 vf_num = (reg & GL_MDET_RX_VF_NUM_M) >>
GL_MDET_RX_VF_NUM_S;
u8 event = (reg & GL_MDET_RX_MAL_TYPE_M) >>
GL_MDET_RX_MAL_TYPE_S;
u16 queue = ((reg & GL_MDET_RX_QNUM_M) >>
GL_MDET_RX_QNUM_S);
if (netif_msg_rx_err(pf))
dev_info(dev, "Malicious Driver Detection event %d on RX queue %d PF# %d VF# %d\n",
event, queue, pf_num, vf_num);
wr32(hw, GL_MDET_RX, 0xffffffff);
}
/* check to see if this PF caused an MDD event */
reg = rd32(hw, PF_MDET_TX_PQM);
if (reg & PF_MDET_TX_PQM_VALID_M) {
wr32(hw, PF_MDET_TX_PQM, 0xFFFF);
if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_PQM detected on PF\n");
}
reg = rd32(hw, PF_MDET_TX_TCLAN);
if (reg & PF_MDET_TX_TCLAN_VALID_M) {
wr32(hw, PF_MDET_TX_TCLAN, 0xFFFF);
if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_TCLAN detected on PF\n");
}
reg = rd32(hw, PF_MDET_RX);
if (reg & PF_MDET_RX_VALID_M) {
wr32(hw, PF_MDET_RX, 0xFFFF);
if (netif_msg_rx_err(pf))
dev_info(dev, "Malicious Driver Detection event RX detected on PF\n");
}
/* Check to see if one of the VFs caused an MDD event, and then
* increment counters and set print pending
*/
ice_for_each_vf(pf, i) {
struct ice_vf *vf = &pf->vf[i];
reg = rd32(hw, VP_MDET_TX_PQM(i));
if (reg & VP_MDET_TX_PQM_VALID_M) {
wr32(hw, VP_MDET_TX_PQM(i), 0xFFFF);
vf->mdd_tx_events.count++;
set_bit(__ICE_MDD_VF_PRINT_PENDING, pf->state);
if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_PQM detected on VF %d\n",
i);
}
reg = rd32(hw, VP_MDET_TX_TCLAN(i));
if (reg & VP_MDET_TX_TCLAN_VALID_M) {
wr32(hw, VP_MDET_TX_TCLAN(i), 0xFFFF);
vf->mdd_tx_events.count++;
set_bit(__ICE_MDD_VF_PRINT_PENDING, pf->state);
if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_TCLAN detected on VF %d\n",
i);
}
reg = rd32(hw, VP_MDET_TX_TDPU(i));
if (reg & VP_MDET_TX_TDPU_VALID_M) {
wr32(hw, VP_MDET_TX_TDPU(i), 0xFFFF);
vf->mdd_tx_events.count++;
set_bit(__ICE_MDD_VF_PRINT_PENDING, pf->state);
if (netif_msg_tx_err(pf))
dev_info(dev, "Malicious Driver Detection event TX_TDPU detected on VF %d\n",
i);
}
reg = rd32(hw, VP_MDET_RX(i));
if (reg & VP_MDET_RX_VALID_M) {
wr32(hw, VP_MDET_RX(i), 0xFFFF);
vf->mdd_rx_events.count++;
set_bit(__ICE_MDD_VF_PRINT_PENDING, pf->state);
if (netif_msg_rx_err(pf))
dev_info(dev, "Malicious Driver Detection event RX detected on VF %d\n",
i);
/* Since the queue is disabled on VF Rx MDD events, the
* PF can be configured to reset the VF through ethtool
* private flag mdd-auto-reset-vf.
*/
if (test_bit(ICE_FLAG_MDD_AUTO_RESET_VF, pf->flags)) {
/* VF MDD event counters will be cleared by
* reset, so print the event prior to reset.
*/
ice_print_vf_rx_mdd_event(vf);
mutex_lock(&pf->vf[i].cfg_lock);
ice_reset_vf(&pf->vf[i], false);
mutex_unlock(&pf->vf[i].cfg_lock);
}
}
}
ice_print_vfs_mdd_events(pf);
}
/**
* ice_force_phys_link_state - Force the physical link state
* @vsi: VSI to force the physical link state to up/down
* @link_up: true/false indicates to set the physical link to up/down
*
* Force the physical link state by getting the current PHY capabilities from
* hardware and setting the PHY config based on the determined capabilities. If
* link changes a link event will be triggered because both the Enable Automatic
* Link Update and LESM Enable bits are set when setting the PHY capabilities.
*
* Returns 0 on success, negative on failure
*/
static int ice_force_phys_link_state(struct ice_vsi *vsi, bool link_up)
{
struct ice_aqc_get_phy_caps_data *pcaps;
struct ice_aqc_set_phy_cfg_data *cfg;
struct ice_port_info *pi;
struct device *dev;
int retcode;
if (!vsi || !vsi->port_info || !vsi->back)
return -EINVAL;
if (vsi->type != ICE_VSI_PF)
return 0;
dev = ice_pf_to_dev(vsi->back);
pi = vsi->port_info;
pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
if (!pcaps)
return -ENOMEM;
retcode = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_ACTIVE_CFG, pcaps,
NULL);
if (retcode) {
dev_err(dev, "Failed to get phy capabilities, VSI %d error %d\n",
vsi->vsi_num, retcode);
retcode = -EIO;
goto out;
}
/* No change in link */
if (link_up == !!(pcaps->caps & ICE_AQC_PHY_EN_LINK) &&
link_up == !!(pi->phy.link_info.link_info & ICE_AQ_LINK_UP))
goto out;
/* Use the current user PHY configuration. The current user PHY
* configuration is initialized during probe from PHY capabilities
* software mode, and updated on set PHY configuration.
*/
cfg = kmemdup(&pi->phy.curr_user_phy_cfg, sizeof(*cfg), GFP_KERNEL);
if (!cfg) {
retcode = -ENOMEM;
goto out;
}
cfg->caps |= ICE_AQ_PHY_ENA_AUTO_LINK_UPDT;
if (link_up)
cfg->caps |= ICE_AQ_PHY_ENA_LINK;
else
cfg->caps &= ~ICE_AQ_PHY_ENA_LINK;
retcode = ice_aq_set_phy_cfg(&vsi->back->hw, pi, cfg, NULL);
if (retcode) {
dev_err(dev, "Failed to set phy config, VSI %d error %d\n",
vsi->vsi_num, retcode);
retcode = -EIO;
}
kfree(cfg);
out:
kfree(pcaps);
return retcode;
}
/**
* ice_init_nvm_phy_type - Initialize the NVM PHY type
* @pi: port info structure
*
* Initialize nvm_phy_type_[low|high] for link lenient mode support
*/
static int ice_init_nvm_phy_type(struct ice_port_info *pi)
{
struct ice_aqc_get_phy_caps_data *pcaps;
struct ice_pf *pf = pi->hw->back;
enum ice_status status;
int err = 0;
pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
if (!pcaps)
return -ENOMEM;
status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_NO_MEDIA, pcaps,
NULL);
if (status) {
dev_err(ice_pf_to_dev(pf), "Get PHY capability failed.\n");
err = -EIO;
goto out;
}
pf->nvm_phy_type_hi = pcaps->phy_type_high;
pf->nvm_phy_type_lo = pcaps->phy_type_low;
out:
kfree(pcaps);
return err;
}
/**
* ice_init_link_dflt_override - Initialize link default override
* @pi: port info structure
*
* Initialize link default override and PHY total port shutdown during probe
*/
static void ice_init_link_dflt_override(struct ice_port_info *pi)
{
struct ice_link_default_override_tlv *ldo;
struct ice_pf *pf = pi->hw->back;
ldo = &pf->link_dflt_override;
if (ice_get_link_default_override(ldo, pi))
return;
if (!(ldo->options & ICE_LINK_OVERRIDE_PORT_DIS))
return;
/* Enable Total Port Shutdown (override/replace link-down-on-close
* ethtool private flag) for ports with Port Disable bit set.
*/
set_bit(ICE_FLAG_TOTAL_PORT_SHUTDOWN_ENA, pf->flags);
set_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, pf->flags);
}
/**
* ice_init_phy_cfg_dflt_override - Initialize PHY cfg default override settings
* @pi: port info structure
*
* If default override is enabled, initialized the user PHY cfg speed and FEC
* settings using the default override mask from the NVM.
*
* The PHY should only be configured with the default override settings the
* first time media is available. The __ICE_LINK_DEFAULT_OVERRIDE_PENDING state
* is used to indicate that the user PHY cfg default override is initialized
* and the PHY has not been configured with the default override settings. The
* state is set here, and cleared in ice_configure_phy the first time the PHY is
* configured.
*/
static void ice_init_phy_cfg_dflt_override(struct ice_port_info *pi)
{
struct ice_link_default_override_tlv *ldo;
struct ice_aqc_set_phy_cfg_data *cfg;
struct ice_phy_info *phy = &pi->phy;
struct ice_pf *pf = pi->hw->back;
ldo = &pf->link_dflt_override;
/* If link default override is enabled, use to mask NVM PHY capabilities
* for speed and FEC default configuration.
*/
cfg = &phy->curr_user_phy_cfg;
if (ldo->phy_type_low || ldo->phy_type_high) {
cfg->phy_type_low = pf->nvm_phy_type_lo &
cpu_to_le64(ldo->phy_type_low);
cfg->phy_type_high = pf->nvm_phy_type_hi &
cpu_to_le64(ldo->phy_type_high);
}
cfg->link_fec_opt = ldo->fec_options;
phy->curr_user_fec_req = ICE_FEC_AUTO;
set_bit(__ICE_LINK_DEFAULT_OVERRIDE_PENDING, pf->state);
}
/**
* ice_init_phy_user_cfg - Initialize the PHY user configuration
* @pi: port info structure
*
* Initialize the current user PHY configuration, speed, FEC, and FC requested
* mode to default. The PHY defaults are from get PHY capabilities topology
* with media so call when media is first available. An error is returned if
* called when media is not available. The PHY initialization completed state is
* set here.
*
* These configurations are used when setting PHY
* configuration. The user PHY configuration is updated on set PHY
* configuration. Returns 0 on success, negative on failure
*/
static int ice_init_phy_user_cfg(struct ice_port_info *pi)
{
struct ice_aqc_get_phy_caps_data *pcaps;
struct ice_phy_info *phy = &pi->phy;
struct ice_pf *pf = pi->hw->back;
enum ice_status status;
struct ice_vsi *vsi;
int err = 0;
if (!(phy->link_info.link_info & ICE_AQ_MEDIA_AVAILABLE))
return -EIO;
vsi = ice_get_main_vsi(pf);
if (!vsi)
return -EINVAL;
pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
if (!pcaps)
return -ENOMEM;
status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_MEDIA, pcaps,
NULL);
if (status) {
dev_err(ice_pf_to_dev(pf), "Get PHY capability failed.\n");
err = -EIO;
goto err_out;
}
ice_copy_phy_caps_to_cfg(pi, pcaps, &pi->phy.curr_user_phy_cfg);
/* check if lenient mode is supported and enabled */
if (ice_fw_supports_link_override(&vsi->back->hw) &&
!(pcaps->module_compliance_enforcement &
ICE_AQC_MOD_ENFORCE_STRICT_MODE)) {
set_bit(ICE_FLAG_LINK_LENIENT_MODE_ENA, pf->flags);
/* if link default override is enabled, initialize user PHY
* configuration with link default override values
*/
if (pf->link_dflt_override.options & ICE_LINK_OVERRIDE_EN) {
ice_init_phy_cfg_dflt_override(pi);
goto out;
}
}
/* if link default override is not enabled, initialize PHY using
* topology with media
*/
phy->curr_user_fec_req = ice_caps_to_fec_mode(pcaps->caps,
pcaps->link_fec_options);
phy->curr_user_fc_req = ice_caps_to_fc_mode(pcaps->caps);
out:
phy->curr_user_speed_req = ICE_AQ_LINK_SPEED_M;
set_bit(__ICE_PHY_INIT_COMPLETE, pf->state);
err_out:
kfree(pcaps);
return err;
}
/**
* ice_configure_phy - configure PHY
* @vsi: VSI of PHY
*
* Set the PHY configuration. If the current PHY configuration is the same as
* the curr_user_phy_cfg, then do nothing to avoid link flap. Otherwise
* configure the based get PHY capabilities for topology with media.
*/
static int ice_configure_phy(struct ice_vsi *vsi)
{
struct device *dev = ice_pf_to_dev(vsi->back);
struct ice_aqc_get_phy_caps_data *pcaps;
struct ice_aqc_set_phy_cfg_data *cfg;
struct ice_port_info *pi;
enum ice_status status;
int err = 0;
pi = vsi->port_info;
if (!pi)
return -EINVAL;
/* Ensure we have media as we cannot configure a medialess port */
if (!(pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE))
return -EPERM;
ice_print_topo_conflict(vsi);
if (vsi->port_info->phy.link_info.topo_media_conflict ==
ICE_AQ_LINK_TOPO_UNSUPP_MEDIA)
return -EPERM;
if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags))
return ice_force_phys_link_state(vsi, true);
pcaps = kzalloc(sizeof(*pcaps), GFP_KERNEL);
if (!pcaps)
return -ENOMEM;
/* Get current PHY config */
status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_ACTIVE_CFG, pcaps,
NULL);
if (status) {
dev_err(dev, "Failed to get PHY configuration, VSI %d error %s\n",
vsi->vsi_num, ice_stat_str(status));
err = -EIO;
goto done;
}
/* If PHY enable link is configured and configuration has not changed,
* there's nothing to do
*/
if (pcaps->caps & ICE_AQC_PHY_EN_LINK &&
ice_phy_caps_equals_cfg(pcaps, &pi->phy.curr_user_phy_cfg))
goto done;
/* Use PHY topology as baseline for configuration */
memset(pcaps, 0, sizeof(*pcaps));
status = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_TOPO_CAP_MEDIA, pcaps,
NULL);
if (status) {
dev_err(dev, "Failed to get PHY topology, VSI %d error %s\n",
vsi->vsi_num, ice_stat_str(status));
err = -EIO;
goto done;
}
cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
if (!cfg) {
err = -ENOMEM;
goto done;
}
ice_copy_phy_caps_to_cfg(pi, pcaps, cfg);
/* Speed - If default override pending, use curr_user_phy_cfg set in
* ice_init_phy_user_cfg_ldo.
*/
if (test_and_clear_bit(__ICE_LINK_DEFAULT_OVERRIDE_PENDING,
vsi->back->state)) {
cfg->phy_type_low = pi->phy.curr_user_phy_cfg.phy_type_low;
cfg->phy_type_high = pi->phy.curr_user_phy_cfg.phy_type_high;
} else {
u64 phy_low = 0, phy_high = 0;
ice_update_phy_type(&phy_low, &phy_high,
pi->phy.curr_user_speed_req);
cfg->phy_type_low = pcaps->phy_type_low & cpu_to_le64(phy_low);
cfg->phy_type_high = pcaps->phy_type_high &
cpu_to_le64(phy_high);
}
/* Can't provide what was requested; use PHY capabilities */
if (!cfg->phy_type_low && !cfg->phy_type_high) {
cfg->phy_type_low = pcaps->phy_type_low;
cfg->phy_type_high = pcaps->phy_type_high;
}
/* FEC */
ice_cfg_phy_fec(pi, cfg, pi->phy.curr_user_fec_req);
/* Can't provide what was requested; use PHY capabilities */
if (cfg->link_fec_opt !=
(cfg->link_fec_opt & pcaps->link_fec_options)) {
cfg->caps |= pcaps->caps & ICE_AQC_PHY_EN_AUTO_FEC;
cfg->link_fec_opt = pcaps->link_fec_options;
}
/* Flow Control - always supported; no need to check against
* capabilities
*/
ice_cfg_phy_fc(pi, cfg, pi->phy.curr_user_fc_req);
/* Enable link and link update */
cfg->caps |= ICE_AQ_PHY_ENA_AUTO_LINK_UPDT | ICE_AQ_PHY_ENA_LINK;
status = ice_aq_set_phy_cfg(&vsi->back->hw, pi, cfg, NULL);
if (status) {
dev_err(dev, "Failed to set phy config, VSI %d error %s\n",
vsi->vsi_num, ice_stat_str(status));
err = -EIO;
}
kfree(cfg);
done:
kfree(pcaps);
return err;
}
/**
* ice_check_media_subtask - Check for media
* @pf: pointer to PF struct
*
* If media is available, then initialize PHY user configuration if it is not
* been, and configure the PHY if the interface is up.
*/
static void ice_check_media_subtask(struct ice_pf *pf)
{
struct ice_port_info *pi;
struct ice_vsi *vsi;
int err;
/* No need to check for media if it's already present */
if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags))
return;
vsi = ice_get_main_vsi(pf);
if (!vsi)
return;
/* Refresh link info and check if media is present */
pi = vsi->port_info;
err = ice_update_link_info(pi);
if (err)
return;
if (pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE) {
if (!test_bit(__ICE_PHY_INIT_COMPLETE, pf->state))
ice_init_phy_user_cfg(pi);
/* PHY settings are reset on media insertion, reconfigure
* PHY to preserve settings.
*/
if (test_bit(__ICE_DOWN, vsi->state) &&
test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags))
return;
err = ice_configure_phy(vsi);
if (!err)
clear_bit(ICE_FLAG_NO_MEDIA, pf->flags);
/* A Link Status Event will be generated; the event handler
* will complete bringing the interface up
*/
}
}
/**
* ice_service_task - manage and run subtasks
* @work: pointer to work_struct contained by the PF struct
*/
static void ice_service_task(struct work_struct *work)
{
struct ice_pf *pf = container_of(work, struct ice_pf, serv_task);
unsigned long start_time = jiffies;
/* subtasks */
/* process reset requests first */
ice_reset_subtask(pf);
/* bail if a reset/recovery cycle is pending or rebuild failed */
if (ice_is_reset_in_progress(pf->state) ||
test_bit(__ICE_SUSPENDED, pf->state) ||
test_bit(__ICE_NEEDS_RESTART, pf->state)) {
ice_service_task_complete(pf);
return;
}
ice_clean_adminq_subtask(pf);
ice_check_media_subtask(pf);
ice_check_for_hang_subtask(pf);
ice_sync_fltr_subtask(pf);
ice_handle_mdd_event(pf);
ice_watchdog_subtask(pf);
if (ice_is_safe_mode(pf)) {
ice_service_task_complete(pf);
return;
}
ice_process_vflr_event(pf);
ice_clean_mailboxq_subtask(pf);
ice_sync_arfs_fltrs(pf);
/* Clear __ICE_SERVICE_SCHED flag to allow scheduling next event */
ice_service_task_complete(pf);
/* If the tasks have taken longer than one service timer period
* or there is more work to be done, reset the service timer to
* schedule the service task now.
*/
if (time_after(jiffies, (start_time + pf->serv_tmr_period)) ||
test_bit(__ICE_MDD_EVENT_PENDING, pf->state) ||
test_bit(__ICE_VFLR_EVENT_PENDING, pf->state) ||
test_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state) ||
test_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state))
mod_timer(&pf->serv_tmr, jiffies);
}
/**
* ice_set_ctrlq_len - helper function to set controlq length
* @hw: pointer to the HW instance
*/
static void ice_set_ctrlq_len(struct ice_hw *hw)
{
hw->adminq.num_rq_entries = ICE_AQ_LEN;
hw->adminq.num_sq_entries = ICE_AQ_LEN;
hw->adminq.rq_buf_size = ICE_AQ_MAX_BUF_LEN;
hw->adminq.sq_buf_size = ICE_AQ_MAX_BUF_LEN;
hw->mailboxq.num_rq_entries = PF_MBX_ARQLEN_ARQLEN_M;
hw->mailboxq.num_sq_entries = ICE_MBXSQ_LEN;
hw->mailboxq.rq_buf_size = ICE_MBXQ_MAX_BUF_LEN;
hw->mailboxq.sq_buf_size = ICE_MBXQ_MAX_BUF_LEN;
}
/**
* ice_schedule_reset - schedule a reset
* @pf: board private structure
* @reset: reset being requested
*/
int ice_schedule_reset(struct ice_pf *pf, enum ice_reset_req reset)
{
struct device *dev = ice_pf_to_dev(pf);
/* bail out if earlier reset has failed */
if (test_bit(__ICE_RESET_FAILED, pf->state)) {
dev_dbg(dev, "earlier reset has failed\n");
return -EIO;
}
/* bail if reset/recovery already in progress */
if (ice_is_reset_in_progress(pf->state)) {
dev_dbg(dev, "Reset already in progress\n");
return -EBUSY;
}
switch (reset) {
case ICE_RESET_PFR:
set_bit(__ICE_PFR_REQ, pf->state);
break;
case ICE_RESET_CORER:
set_bit(__ICE_CORER_REQ, pf->state);
break;
case ICE_RESET_GLOBR:
set_bit(__ICE_GLOBR_REQ, pf->state);
break;
default:
return -EINVAL;
}
ice_service_task_schedule(pf);
return 0;
}
/**
* ice_irq_affinity_notify - Callback for affinity changes
* @notify: context as to what irq was changed
* @mask: the new affinity mask
*
* This is a callback function used by the irq_set_affinity_notifier function
* so that we may register to receive changes to the irq affinity masks.
*/
static void
ice_irq_affinity_notify(struct irq_affinity_notify *notify,
const cpumask_t *mask)
{
struct ice_q_vector *q_vector =
container_of(notify, struct ice_q_vector, affinity_notify);
cpumask_copy(&q_vector->affinity_mask, mask);
}
/**
* ice_irq_affinity_release - Callback for affinity notifier release
* @ref: internal core kernel usage
*
* This is a callback function used by the irq_set_affinity_notifier function
* to inform the current notification subscriber that they will no longer
* receive notifications.
*/
static void ice_irq_affinity_release(struct kref __always_unused *ref) {}
/**
* ice_vsi_ena_irq - Enable IRQ for the given VSI
* @vsi: the VSI being configured
*/
static int ice_vsi_ena_irq(struct ice_vsi *vsi)
{
struct ice_hw *hw = &vsi->back->hw;
int i;
ice_for_each_q_vector(vsi, i)
ice_irq_dynamic_ena(hw, vsi, vsi->q_vectors[i]);
ice_flush(hw);
return 0;
}
/**
* ice_vsi_req_irq_msix - get MSI-X vectors from the OS for the VSI
* @vsi: the VSI being configured
* @basename: name for the vector
*/
static int ice_vsi_req_irq_msix(struct ice_vsi *vsi, char *basename)
{
int q_vectors = vsi->num_q_vectors;
struct ice_pf *pf = vsi->back;
int base = vsi->base_vector;
struct device *dev;
int rx_int_idx = 0;
int tx_int_idx = 0;
int vector, err;
int irq_num;
dev = ice_pf_to_dev(pf);
for (vector = 0; vector < q_vectors; vector++) {
struct ice_q_vector *q_vector = vsi->q_vectors[vector];
irq_num = pf->msix_entries[base + vector].vector;
if (q_vector->tx.ring && q_vector->rx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
"%s-%s-%d", basename, "TxRx", rx_int_idx++);
tx_int_idx++;
} else if (q_vector->rx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
"%s-%s-%d", basename, "rx", rx_int_idx++);
} else if (q_vector->tx.ring) {
snprintf(q_vector->name, sizeof(q_vector->name) - 1,
"%s-%s-%d", basename, "tx", tx_int_idx++);
} else {
/* skip this unused q_vector */
continue;
}
err = devm_request_irq(dev, irq_num, vsi->irq_handler, 0,
q_vector->name, q_vector);
if (err) {
netdev_err(vsi->netdev, "MSIX request_irq failed, error: %d\n",
err);
goto free_q_irqs;
}
/* register for affinity change notifications */
if (!IS_ENABLED(CONFIG_RFS_ACCEL)) {
struct irq_affinity_notify *affinity_notify;
affinity_notify = &q_vector->affinity_notify;
affinity_notify->notify = ice_irq_affinity_notify;
affinity_notify->release = ice_irq_affinity_release;
irq_set_affinity_notifier(irq_num, affinity_notify);
}
/* assign the mask for this irq */
irq_set_affinity_hint(irq_num, &q_vector->affinity_mask);
}
vsi->irqs_ready = true;
return 0;
free_q_irqs:
while (vector) {
vector--;
irq_num = pf->msix_entries[base + vector].vector;
if (!IS_ENABLED(CONFIG_RFS_ACCEL))
irq_set_affinity_notifier(irq_num, NULL);
irq_set_affinity_hint(irq_num, NULL);
devm_free_irq(dev, irq_num, &vsi->q_vectors[vector]);
}
return err;
}
/**
* ice_xdp_alloc_setup_rings - Allocate and setup Tx rings for XDP
* @vsi: VSI to setup Tx rings used by XDP
*
* Return 0 on success and negative value on error
*/
static int ice_xdp_alloc_setup_rings(struct ice_vsi *vsi)
{
struct device *dev = ice_pf_to_dev(vsi->back);
int i;
for (i = 0; i < vsi->num_xdp_txq; i++) {
u16 xdp_q_idx = vsi->alloc_txq + i;
struct ice_ring *xdp_ring;
xdp_ring = kzalloc(sizeof(*xdp_ring), GFP_KERNEL);
if (!xdp_ring)
goto free_xdp_rings;
xdp_ring->q_index = xdp_q_idx;
xdp_ring->reg_idx = vsi->txq_map[xdp_q_idx];
xdp_ring->ring_active = false;
xdp_ring->vsi = vsi;
xdp_ring->netdev = NULL;
xdp_ring->dev = dev;
xdp_ring->count = vsi->num_tx_desc;
WRITE_ONCE(vsi->xdp_rings[i], xdp_ring);
if (ice_setup_tx_ring(xdp_ring))
goto free_xdp_rings;
ice_set_ring_xdp(xdp_ring);
xdp_ring->xsk_pool = ice_xsk_pool(xdp_ring);
}
return 0;
free_xdp_rings:
for (; i >= 0; i--)
if (vsi->xdp_rings[i] && vsi->xdp_rings[i]->desc)
ice_free_tx_ring(vsi->xdp_rings[i]);
return -ENOMEM;
}
/**
* ice_vsi_assign_bpf_prog - set or clear bpf prog pointer on VSI
* @vsi: VSI to set the bpf prog on
* @prog: the bpf prog pointer
*/
static void ice_vsi_assign_bpf_prog(struct ice_vsi *vsi, struct bpf_prog *prog)
{
struct bpf_prog *old_prog;
int i;
old_prog = xchg(&vsi->xdp_prog, prog);
if (old_prog)
bpf_prog_put(old_prog);
ice_for_each_rxq(vsi, i)
WRITE_ONCE(vsi->rx_rings[i]->xdp_prog, vsi->xdp_prog);
}
/**
* ice_prepare_xdp_rings - Allocate, configure and setup Tx rings for XDP
* @vsi: VSI to bring up Tx rings used by XDP
* @prog: bpf program that will be assigned to VSI
*
* Return 0 on success and negative value on error
*/
int ice_prepare_xdp_rings(struct ice_vsi *vsi, struct bpf_prog *prog)
{
u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
int xdp_rings_rem = vsi->num_xdp_txq;
struct ice_pf *pf = vsi->back;
struct ice_qs_cfg xdp_qs_cfg = {
.qs_mutex = &pf->avail_q_mutex,
.pf_map = pf->avail_txqs,
.pf_map_size = pf->max_pf_txqs,
.q_count = vsi->num_xdp_txq,
.scatter_count = ICE_MAX_SCATTER_TXQS,
.vsi_map = vsi->txq_map,
.vsi_map_offset = vsi->alloc_txq,
.mapping_mode = ICE_VSI_MAP_CONTIG
};
enum ice_status status;
struct device *dev;
int i, v_idx;
dev = ice_pf_to_dev(pf);
vsi->xdp_rings = devm_kcalloc(dev, vsi->num_xdp_txq,
sizeof(*vsi->xdp_rings), GFP_KERNEL);
if (!vsi->xdp_rings)
return -ENOMEM;
vsi->xdp_mapping_mode = xdp_qs_cfg.mapping_mode;
if (__ice_vsi_get_qs(&xdp_qs_cfg))
goto err_map_xdp;
if (ice_xdp_alloc_setup_rings(vsi))
goto clear_xdp_rings;
/* follow the logic from ice_vsi_map_rings_to_vectors */
ice_for_each_q_vector(vsi, v_idx) {
struct ice_q_vector *q_vector = vsi->q_vectors[v_idx];
int xdp_rings_per_v, q_id, q_base;
xdp_rings_per_v = DIV_ROUND_UP(xdp_rings_rem,
vsi->num_q_vectors - v_idx);
q_base = vsi->num_xdp_txq - xdp_rings_rem;
for (q_id = q_base; q_id < (q_base + xdp_rings_per_v); q_id++) {
struct ice_ring *xdp_ring = vsi->xdp_rings[q_id];
xdp_ring->q_vector = q_vector;
xdp_ring->next = q_vector->tx.ring;
q_vector->tx.ring = xdp_ring;
}
xdp_rings_rem -= xdp_rings_per_v;
}
/* omit the scheduler update if in reset path; XDP queues will be
* taken into account at the end of ice_vsi_rebuild, where
* ice_cfg_vsi_lan is being called
*/
if (ice_is_reset_in_progress(pf->state))
return 0;
/* tell the Tx scheduler that right now we have
* additional queues
*/
for (i = 0; i < vsi->tc_cfg.numtc; i++)
max_txqs[i] = vsi->num_txq + vsi->num_xdp_txq;
status = ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
max_txqs);
if (status) {
dev_err(dev, "Failed VSI LAN queue config for XDP, error: %s\n",
ice_stat_str(status));
goto clear_xdp_rings;
}
/* assign the prog only when it's not already present on VSI;
* this flow is a subject of both ethtool -L and ndo_bpf flows;
* VSI rebuild that happens under ethtool -L can expose us to
* the bpf_prog refcount issues as we would be swapping same
* bpf_prog pointers from vsi->xdp_prog and calling bpf_prog_put
* on it as it would be treated as an 'old_prog'; for ndo_bpf
* this is not harmful as dev_xdp_install bumps the refcount
* before calling the op exposed by the driver;
*/
if (!ice_is_xdp_ena_vsi(vsi))
ice_vsi_assign_bpf_prog(vsi, prog);
return 0;
clear_xdp_rings:
for (i = 0; i < vsi->num_xdp_txq; i++)
if (vsi->xdp_rings[i]) {
kfree_rcu(vsi->xdp_rings[i], rcu);
vsi->xdp_rings[i] = NULL;
}
err_map_xdp:
mutex_lock(&pf->avail_q_mutex);
for (i = 0; i < vsi->num_xdp_txq; i++) {
clear_bit(vsi->txq_map[i + vsi->alloc_txq], pf->avail_txqs);
vsi->txq_map[i + vsi->alloc_txq] = ICE_INVAL_Q_INDEX;
}
mutex_unlock(&pf->avail_q_mutex);
devm_kfree(dev, vsi->xdp_rings);
return -ENOMEM;
}
/**
* ice_destroy_xdp_rings - undo the configuration made by ice_prepare_xdp_rings
* @vsi: VSI to remove XDP rings
*
* Detach XDP rings from irq vectors, clean up the PF bitmap and free
* resources
*/
int ice_destroy_xdp_rings(struct ice_vsi *vsi)
{
u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
struct ice_pf *pf = vsi->back;
int i, v_idx;
/* q_vectors are freed in reset path so there's no point in detaching
* rings; in case of rebuild being triggered not from reset bits
* in pf->state won't be set, so additionally check first q_vector
* against NULL
*/
if (ice_is_reset_in_progress(pf->state) || !vsi->q_vectors[0])
goto free_qmap;
ice_for_each_q_vector(vsi, v_idx) {
struct ice_q_vector *q_vector = vsi->q_vectors[v_idx];
struct ice_ring *ring;
ice_for_each_ring(ring, q_vector->tx)
if (!ring->tx_buf || !ice_ring_is_xdp(ring))
break;
/* restore the value of last node prior to XDP setup */
q_vector->tx.ring = ring;
}
free_qmap:
mutex_lock(&pf->avail_q_mutex);
for (i = 0; i < vsi->num_xdp_txq; i++) {
clear_bit(vsi->txq_map[i + vsi->alloc_txq], pf->avail_txqs);
vsi->txq_map[i + vsi->alloc_txq] = ICE_INVAL_Q_INDEX;
}
mutex_unlock(&pf->avail_q_mutex);
for (i = 0; i < vsi->num_xdp_txq; i++)
if (vsi->xdp_rings[i]) {
if (vsi->xdp_rings[i]->desc) {
synchronize_rcu();
ice_free_tx_ring(vsi->xdp_rings[i]);
}
kfree_rcu(vsi->xdp_rings[i], rcu);
vsi->xdp_rings[i] = NULL;
}
devm_kfree(ice_pf_to_dev(pf), vsi->xdp_rings);
vsi->xdp_rings = NULL;
if (ice_is_reset_in_progress(pf->state) || !vsi->q_vectors[0])
return 0;
ice_vsi_assign_bpf_prog(vsi, NULL);
/* notify Tx scheduler that we destroyed XDP queues and bring
* back the old number of child nodes
*/
for (i = 0; i < vsi->tc_cfg.numtc; i++)
max_txqs[i] = vsi->num_txq;
/* change number of XDP Tx queues to 0 */
vsi->num_xdp_txq = 0;
return ice_cfg_vsi_lan(vsi->port_info, vsi->idx, vsi->tc_cfg.ena_tc,
max_txqs);
}
/**
* ice_xdp_setup_prog - Add or remove XDP eBPF program
* @vsi: VSI to setup XDP for
* @prog: XDP program
* @extack: netlink extended ack
*/
static int
ice_xdp_setup_prog(struct ice_vsi *vsi, struct bpf_prog *prog,
struct netlink_ext_ack *extack)
{
int frame_size = vsi->netdev->mtu + ICE_ETH_PKT_HDR_PAD;
bool if_running = netif_running(vsi->netdev);
int ret = 0, xdp_ring_err = 0;
if (frame_size > vsi->rx_buf_len) {
NL_SET_ERR_MSG_MOD(extack, "MTU too large for loading XDP");
return -EOPNOTSUPP;
}
/* need to stop netdev while setting up the program for Rx rings */
if (if_running && !test_and_set_bit(__ICE_DOWN, vsi->state)) {
ret = ice_down(vsi);
if (ret) {
NL_SET_ERR_MSG_MOD(extack, "Preparing device for XDP attach failed");
return ret;
}
}
if (!ice_is_xdp_ena_vsi(vsi) && prog) {
vsi->num_xdp_txq = vsi->alloc_rxq;
xdp_ring_err = ice_prepare_xdp_rings(vsi, prog);
if (xdp_ring_err)
NL_SET_ERR_MSG_MOD(extack, "Setting up XDP Tx resources failed");
} else if (ice_is_xdp_ena_vsi(vsi) && !prog) {
xdp_ring_err = ice_destroy_xdp_rings(vsi);
if (xdp_ring_err)
NL_SET_ERR_MSG_MOD(extack, "Freeing XDP Tx resources failed");
} else {
/* safe to call even when prog == vsi->xdp_prog as
* dev_xdp_install in net/core/dev.c incremented prog's
* refcount so corresponding bpf_prog_put won't cause
* underflow
*/
ice_vsi_assign_bpf_prog(vsi, prog);
}
if (if_running)
ret = ice_up(vsi);
if (!ret && prog && vsi->xsk_pools) {
int i;
ice_for_each_rxq(vsi, i) {
struct ice_ring *rx_ring = vsi->rx_rings[i];
if (rx_ring->xsk_pool)
napi_schedule(&rx_ring->q_vector->napi);
}
}
return (ret || xdp_ring_err) ? -ENOMEM : 0;
}
/**
* ice_xdp_safe_mode - XDP handler for safe mode
* @dev: netdevice
* @xdp: XDP command
*/
static int ice_xdp_safe_mode(struct net_device __always_unused *dev,
struct netdev_bpf *xdp)
{
NL_SET_ERR_MSG_MOD(xdp->extack,
"Please provide working DDP firmware package in order to use XDP\n"
"Refer to Documentation/networking/device_drivers/ethernet/intel/ice.rst");
return -EOPNOTSUPP;
}
/**
* ice_xdp - implements XDP handler
* @dev: netdevice
* @xdp: XDP command
*/
static int ice_xdp(struct net_device *dev, struct netdev_bpf *xdp)
{
struct ice_netdev_priv *np = netdev_priv(dev);
struct ice_vsi *vsi = np->vsi;
if (vsi->type != ICE_VSI_PF) {
NL_SET_ERR_MSG_MOD(xdp->extack, "XDP can be loaded only on PF VSI");
return -EINVAL;
}
switch (xdp->command) {
case XDP_SETUP_PROG:
return ice_xdp_setup_prog(vsi, xdp->prog, xdp->extack);
case XDP_SETUP_XSK_POOL:
return ice_xsk_pool_setup(vsi, xdp->xsk.pool,
xdp->xsk.queue_id);
default:
return -EINVAL;
}
}
/**
* ice_ena_misc_vector - enable the non-queue interrupts
* @pf: board private structure
*/
static void ice_ena_misc_vector(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
u32 val;
/* Disable anti-spoof detection interrupt to prevent spurious event
* interrupts during a function reset. Anti-spoof functionally is
* still supported.
*/
val = rd32(hw, GL_MDCK_TX_TDPU);
val |= GL_MDCK_TX_TDPU_RCU_ANTISPOOF_ITR_DIS_M;
wr32(hw, GL_MDCK_TX_TDPU, val);
/* clear things first */
wr32(hw, PFINT_OICR_ENA, 0); /* disable all */
rd32(hw, PFINT_OICR); /* read to clear */
val = (PFINT_OICR_ECC_ERR_M |
PFINT_OICR_MAL_DETECT_M |
PFINT_OICR_GRST_M |
PFINT_OICR_PCI_EXCEPTION_M |
PFINT_OICR_VFLR_M |
PFINT_OICR_HMC_ERR_M |
PFINT_OICR_PE_CRITERR_M);
wr32(hw, PFINT_OICR_ENA, val);
/* SW_ITR_IDX = 0, but don't change INTENA */
wr32(hw, GLINT_DYN_CTL(pf->oicr_idx),
GLINT_DYN_CTL_SW_ITR_INDX_M | GLINT_DYN_CTL_INTENA_MSK_M);
}
/**
* ice_misc_intr - misc interrupt handler
* @irq: interrupt number
* @data: pointer to a q_vector
*/
static irqreturn_t ice_misc_intr(int __always_unused irq, void *data)
{
struct ice_pf *pf = (struct ice_pf *)data;
struct ice_hw *hw = &pf->hw;
irqreturn_t ret = IRQ_NONE;
struct device *dev;
u32 oicr, ena_mask;
dev = ice_pf_to_dev(pf);
set_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state);
set_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state);
oicr = rd32(hw, PFINT_OICR);
ena_mask = rd32(hw, PFINT_OICR_ENA);
if (oicr & PFINT_OICR_SWINT_M) {
ena_mask &= ~PFINT_OICR_SWINT_M;
pf->sw_int_count++;
}
if (oicr & PFINT_OICR_MAL_DETECT_M) {
ena_mask &= ~PFINT_OICR_MAL_DETECT_M;
set_bit(__ICE_MDD_EVENT_PENDING, pf->state);
}
if (oicr & PFINT_OICR_VFLR_M) {
/* disable any further VFLR event notifications */
if (test_bit(__ICE_VF_RESETS_DISABLED, pf->state)) {
u32 reg = rd32(hw, PFINT_OICR_ENA);
reg &= ~PFINT_OICR_VFLR_M;
wr32(hw, PFINT_OICR_ENA, reg);
} else {
ena_mask &= ~PFINT_OICR_VFLR_M;
set_bit(__ICE_VFLR_EVENT_PENDING, pf->state);
}
}
if (oicr & PFINT_OICR_GRST_M) {
u32 reset;
/* we have a reset warning */
ena_mask &= ~PFINT_OICR_GRST_M;
reset = (rd32(hw, GLGEN_RSTAT) & GLGEN_RSTAT_RESET_TYPE_M) >>
GLGEN_RSTAT_RESET_TYPE_S;
if (reset == ICE_RESET_CORER)
pf->corer_count++;
else if (reset == ICE_RESET_GLOBR)
pf->globr_count++;
else if (reset == ICE_RESET_EMPR)
pf->empr_count++;
else
dev_dbg(dev, "Invalid reset type %d\n", reset);
/* If a reset cycle isn't already in progress, we set a bit in
* pf->state so that the service task can start a reset/rebuild.
* We also make note of which reset happened so that peer
* devices/drivers can be informed.
*/
if (!test_and_set_bit(__ICE_RESET_OICR_RECV, pf->state)) {
if (reset == ICE_RESET_CORER)
set_bit(__ICE_CORER_RECV, pf->state);
else if (reset == ICE_RESET_GLOBR)
set_bit(__ICE_GLOBR_RECV, pf->state);
else
set_bit(__ICE_EMPR_RECV, pf->state);
/* There are couple of different bits at play here.
* hw->reset_ongoing indicates whether the hardware is
* in reset. This is set to true when a reset interrupt
* is received and set back to false after the driver
* has determined that the hardware is out of reset.
*
* __ICE_RESET_OICR_RECV in pf->state indicates
* that a post reset rebuild is required before the
* driver is operational again. This is set above.
*
* As this is the start of the reset/rebuild cycle, set
* both to indicate that.
*/
hw->reset_ongoing = true;
}
}
if (oicr & PFINT_OICR_HMC_ERR_M) {
ena_mask &= ~PFINT_OICR_HMC_ERR_M;
dev_dbg(dev, "HMC Error interrupt - info 0x%x, data 0x%x\n",
rd32(hw, PFHMC_ERRORINFO),
rd32(hw, PFHMC_ERRORDATA));
}
/* Report any remaining unexpected interrupts */
oicr &= ena_mask;
if (oicr) {
dev_dbg(dev, "unhandled interrupt oicr=0x%08x\n", oicr);
/* If a critical error is pending there is no choice but to
* reset the device.
*/
if (oicr & (PFINT_OICR_PE_CRITERR_M |
PFINT_OICR_PCI_EXCEPTION_M |
PFINT_OICR_ECC_ERR_M)) {
set_bit(__ICE_PFR_REQ, pf->state);
ice_service_task_schedule(pf);
}
}
ret = IRQ_HANDLED;
ice_service_task_schedule(pf);
ice_irq_dynamic_ena(hw, NULL, NULL);
return ret;
}
/**
* ice_dis_ctrlq_interrupts - disable control queue interrupts
* @hw: pointer to HW structure
*/
static void ice_dis_ctrlq_interrupts(struct ice_hw *hw)
{
/* disable Admin queue Interrupt causes */
wr32(hw, PFINT_FW_CTL,
rd32(hw, PFINT_FW_CTL) & ~PFINT_FW_CTL_CAUSE_ENA_M);
/* disable Mailbox queue Interrupt causes */
wr32(hw, PFINT_MBX_CTL,
rd32(hw, PFINT_MBX_CTL) & ~PFINT_MBX_CTL_CAUSE_ENA_M);
/* disable Control queue Interrupt causes */
wr32(hw, PFINT_OICR_CTL,
rd32(hw, PFINT_OICR_CTL) & ~PFINT_OICR_CTL_CAUSE_ENA_M);
ice_flush(hw);
}
/**
* ice_free_irq_msix_misc - Unroll misc vector setup
* @pf: board private structure
*/
static void ice_free_irq_msix_misc(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
ice_dis_ctrlq_interrupts(hw);
/* disable OICR interrupt */
wr32(hw, PFINT_OICR_ENA, 0);
ice_flush(hw);
if (pf->msix_entries) {
synchronize_irq(pf->msix_entries[pf->oicr_idx].vector);
devm_free_irq(ice_pf_to_dev(pf),
pf->msix_entries[pf->oicr_idx].vector, pf);
}
pf->num_avail_sw_msix += 1;
ice_free_res(pf->irq_tracker, pf->oicr_idx, ICE_RES_MISC_VEC_ID);
}
/**
* ice_ena_ctrlq_interrupts - enable control queue interrupts
* @hw: pointer to HW structure
* @reg_idx: HW vector index to associate the control queue interrupts with
*/
static void ice_ena_ctrlq_interrupts(struct ice_hw *hw, u16 reg_idx)
{
u32 val;
val = ((reg_idx & PFINT_OICR_CTL_MSIX_INDX_M) |
PFINT_OICR_CTL_CAUSE_ENA_M);
wr32(hw, PFINT_OICR_CTL, val);
/* enable Admin queue Interrupt causes */
val = ((reg_idx & PFINT_FW_CTL_MSIX_INDX_M) |
PFINT_FW_CTL_CAUSE_ENA_M);
wr32(hw, PFINT_FW_CTL, val);
/* enable Mailbox queue Interrupt causes */
val = ((reg_idx & PFINT_MBX_CTL_MSIX_INDX_M) |
PFINT_MBX_CTL_CAUSE_ENA_M);
wr32(hw, PFINT_MBX_CTL, val);
ice_flush(hw);
}
/**
* ice_req_irq_msix_misc - Setup the misc vector to handle non queue events
* @pf: board private structure
*
* This sets up the handler for MSIX 0, which is used to manage the
* non-queue interrupts, e.g. AdminQ and errors. This is not used
* when in MSI or Legacy interrupt mode.
*/
static int ice_req_irq_msix_misc(struct ice_pf *pf)
{
struct device *dev = ice_pf_to_dev(pf);
struct ice_hw *hw = &pf->hw;
int oicr_idx, err = 0;
if (!pf->int_name[0])
snprintf(pf->int_name, sizeof(pf->int_name) - 1, "%s-%s:misc",
dev_driver_string(dev), dev_name(dev));
/* Do not request IRQ but do enable OICR interrupt since settings are
* lost during reset. Note that this function is called only during
* rebuild path and not while reset is in progress.
*/
if (ice_is_reset_in_progress(pf->state))
goto skip_req_irq;
/* reserve one vector in irq_tracker for misc interrupts */
oicr_idx = ice_get_res(pf, pf->irq_tracker, 1, ICE_RES_MISC_VEC_ID);
if (oicr_idx < 0)
return oicr_idx;
pf->num_avail_sw_msix -= 1;
pf->oicr_idx = (u16)oicr_idx;
err = devm_request_irq(dev, pf->msix_entries[pf->oicr_idx].vector,
ice_misc_intr, 0, pf->int_name, pf);
if (err) {
dev_err(dev, "devm_request_irq for %s failed: %d\n",
pf->int_name, err);
ice_free_res(pf->irq_tracker, 1, ICE_RES_MISC_VEC_ID);
pf->num_avail_sw_msix += 1;
return err;
}
skip_req_irq:
ice_ena_misc_vector(pf);
ice_ena_ctrlq_interrupts(hw, pf->oicr_idx);
wr32(hw, GLINT_ITR(ICE_RX_ITR, pf->oicr_idx),
ITR_REG_ALIGN(ICE_ITR_8K) >> ICE_ITR_GRAN_S);
ice_flush(hw);
ice_irq_dynamic_ena(hw, NULL, NULL);
return 0;
}
/**
* ice_napi_add - register NAPI handler for the VSI
* @vsi: VSI for which NAPI handler is to be registered
*
* This function is only called in the driver's load path. Registering the NAPI
* handler is done in ice_vsi_alloc_q_vector() for all other cases (i.e. resume,
* reset/rebuild, etc.)
*/
static void ice_napi_add(struct ice_vsi *vsi)
{
int v_idx;
if (!vsi->netdev)
return;
ice_for_each_q_vector(vsi, v_idx)
netif_napi_add(vsi->netdev, &vsi->q_vectors[v_idx]->napi,
ice_napi_poll, NAPI_POLL_WEIGHT);
}
/**
* ice_set_ops - set netdev and ethtools ops for the given netdev
* @netdev: netdev instance
*/
static void ice_set_ops(struct net_device *netdev)
{
struct ice_pf *pf = ice_netdev_to_pf(netdev);
if (ice_is_safe_mode(pf)) {
netdev->netdev_ops = &ice_netdev_safe_mode_ops;
ice_set_ethtool_safe_mode_ops(netdev);
return;
}
netdev->netdev_ops = &ice_netdev_ops;
netdev->udp_tunnel_nic_info = &pf->hw.udp_tunnel_nic;
ice_set_ethtool_ops(netdev);
}
/**
* ice_set_netdev_features - set features for the given netdev
* @netdev: netdev instance
*/
static void ice_set_netdev_features(struct net_device *netdev)
{
struct ice_pf *pf = ice_netdev_to_pf(netdev);
netdev_features_t csumo_features;
netdev_features_t vlano_features;
netdev_features_t dflt_features;
netdev_features_t tso_features;
if (ice_is_safe_mode(pf)) {
/* safe mode */
netdev->features = NETIF_F_SG | NETIF_F_HIGHDMA;
netdev->hw_features = netdev->features;
return;
}
dflt_features = NETIF_F_SG |
NETIF_F_HIGHDMA |
NETIF_F_NTUPLE |
NETIF_F_RXHASH;
csumo_features = NETIF_F_RXCSUM |
NETIF_F_IP_CSUM |
NETIF_F_SCTP_CRC |
NETIF_F_IPV6_CSUM;
vlano_features = NETIF_F_HW_VLAN_CTAG_FILTER |
NETIF_F_HW_VLAN_CTAG_TX |
NETIF_F_HW_VLAN_CTAG_RX;
tso_features = NETIF_F_TSO |
NETIF_F_TSO_ECN |
NETIF_F_TSO6 |
NETIF_F_GSO_GRE |
NETIF_F_GSO_UDP_TUNNEL |
NETIF_F_GSO_GRE_CSUM |
NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_GSO_PARTIAL |
NETIF_F_GSO_IPXIP4 |
NETIF_F_GSO_IPXIP6 |
NETIF_F_GSO_UDP_L4;
netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM |
NETIF_F_GSO_GRE_CSUM;
/* set features that user can change */
netdev->hw_features = dflt_features | csumo_features |
vlano_features | tso_features;
/* add support for HW_CSUM on packets with MPLS header */
netdev->mpls_features = NETIF_F_HW_CSUM;
/* enable features */
netdev->features |= netdev->hw_features;
/* encap and VLAN devices inherit default, csumo and tso features */
netdev->hw_enc_features |= dflt_features | csumo_features |
tso_features;
netdev->vlan_features |= dflt_features | csumo_features |
tso_features;
}
/**
* ice_cfg_netdev - Allocate, configure and register a netdev
* @vsi: the VSI associated with the new netdev
*
* Returns 0 on success, negative value on failure
*/
static int ice_cfg_netdev(struct ice_vsi *vsi)
{
struct ice_pf *pf = vsi->back;
struct ice_netdev_priv *np;
struct net_device *netdev;
u8 mac_addr[ETH_ALEN];
int err;
err = ice_devlink_create_port(vsi);
if (err)
return err;
netdev = alloc_etherdev_mqs(sizeof(*np), vsi->alloc_txq,
vsi->alloc_rxq);
if (!netdev) {
err = -ENOMEM;
goto err_destroy_devlink_port;
}
vsi->netdev = netdev;
np = netdev_priv(netdev);
np->vsi = vsi;
ice_set_netdev_features(netdev);
ice_set_ops(netdev);
if (vsi->type == ICE_VSI_PF) {
SET_NETDEV_DEV(netdev, ice_pf_to_dev(pf));
ether_addr_copy(mac_addr, vsi->port_info->mac.perm_addr);
ether_addr_copy(netdev->dev_addr, mac_addr);
ether_addr_copy(netdev->perm_addr, mac_addr);
}
netdev->priv_flags |= IFF_UNICAST_FLT;
/* Setup netdev TC information */
ice_vsi_cfg_netdev_tc(vsi, vsi->tc_cfg.ena_tc);
/* setup watchdog timeout value to be 5 second */
netdev->watchdog_timeo = 5 * HZ;
netdev->min_mtu = ETH_MIN_MTU;
netdev->max_mtu = ICE_MAX_MTU;
err = register_netdev(vsi->netdev);
if (err)
goto err_free_netdev;
devlink_port_type_eth_set(&vsi->devlink_port, vsi->netdev);
netif_carrier_off(vsi->netdev);
/* make sure transmit queues start off as stopped */
netif_tx_stop_all_queues(vsi->netdev);
return 0;
err_free_netdev:
free_netdev(vsi->netdev);
vsi->netdev = NULL;
err_destroy_devlink_port:
ice_devlink_destroy_port(vsi);
return err;
}
/**
* ice_fill_rss_lut - Fill the RSS lookup table with default values
* @lut: Lookup table
* @rss_table_size: Lookup table size
* @rss_size: Range of queue number for hashing
*/
void ice_fill_rss_lut(u8 *lut, u16 rss_table_size, u16 rss_size)
{
u16 i;
for (i = 0; i < rss_table_size; i++)
lut[i] = i % rss_size;
}
/**
* ice_pf_vsi_setup - Set up a PF VSI
* @pf: board private structure
* @pi: pointer to the port_info instance
*
* Returns pointer to the successfully allocated VSI software struct
* on success, otherwise returns NULL on failure.
*/
static struct ice_vsi *
ice_pf_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi)
{
return ice_vsi_setup(pf, pi, ICE_VSI_PF, ICE_INVAL_VFID);
}
/**
* ice_ctrl_vsi_setup - Set up a control VSI
* @pf: board private structure
* @pi: pointer to the port_info instance
*
* Returns pointer to the successfully allocated VSI software struct
* on success, otherwise returns NULL on failure.
*/
static struct ice_vsi *
ice_ctrl_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi)
{
return ice_vsi_setup(pf, pi, ICE_VSI_CTRL, ICE_INVAL_VFID);
}
/**
* ice_lb_vsi_setup - Set up a loopback VSI
* @pf: board private structure
* @pi: pointer to the port_info instance
*
* Returns pointer to the successfully allocated VSI software struct
* on success, otherwise returns NULL on failure.
*/
struct ice_vsi *
ice_lb_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi)
{
return ice_vsi_setup(pf, pi, ICE_VSI_LB, ICE_INVAL_VFID);
}
/**
* ice_vlan_rx_add_vid - Add a VLAN ID filter to HW offload
* @netdev: network interface to be adjusted
* @proto: unused protocol
* @vid: VLAN ID to be added
*
* net_device_ops implementation for adding VLAN IDs
*/
static int
ice_vlan_rx_add_vid(struct net_device *netdev, __always_unused __be16 proto,
u16 vid)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
int ret;
if (vid >= VLAN_N_VID) {
netdev_err(netdev, "VLAN id requested %d is out of range %d\n",
vid, VLAN_N_VID);
return -EINVAL;
}
if (vsi->info.pvid)
return -EINVAL;
/* VLAN 0 is added by default during load/reset */
if (!vid)
return 0;
/* Enable VLAN pruning when a VLAN other than 0 is added */
if (!ice_vsi_is_vlan_pruning_ena(vsi)) {
ret = ice_cfg_vlan_pruning(vsi, true, false);
if (ret)
return ret;
}
/* Add a switch rule for this VLAN ID so its corresponding VLAN tagged
* packets aren't pruned by the device's internal switch on Rx
*/
ret = ice_vsi_add_vlan(vsi, vid, ICE_FWD_TO_VSI);
if (!ret) {
vsi->vlan_ena = true;
set_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags);
}
return ret;
}
/**
* ice_vlan_rx_kill_vid - Remove a VLAN ID filter from HW offload
* @netdev: network interface to be adjusted
* @proto: unused protocol
* @vid: VLAN ID to be removed
*
* net_device_ops implementation for removing VLAN IDs
*/
static int
ice_vlan_rx_kill_vid(struct net_device *netdev, __always_unused __be16 proto,
u16 vid)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
int ret;
if (vsi->info.pvid)
return -EINVAL;
/* don't allow removal of VLAN 0 */
if (!vid)
return 0;
/* Make sure ice_vsi_kill_vlan is successful before updating VLAN
* information
*/
ret = ice_vsi_kill_vlan(vsi, vid);
if (ret)
return ret;
/* Disable pruning when VLAN 0 is the only VLAN rule */
if (vsi->num_vlan == 1 && ice_vsi_is_vlan_pruning_ena(vsi))
ret = ice_cfg_vlan_pruning(vsi, false, false);
vsi->vlan_ena = false;
set_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags);
return ret;
}
/**
* ice_setup_pf_sw - Setup the HW switch on startup or after reset
* @pf: board private structure
*
* Returns 0 on success, negative value on failure
*/
static int ice_setup_pf_sw(struct ice_pf *pf)
{
struct ice_vsi *vsi;
int status = 0;
if (ice_is_reset_in_progress(pf->state))
return -EBUSY;
vsi = ice_pf_vsi_setup(pf, pf->hw.port_info);
if (!vsi)
return -ENOMEM;
status = ice_cfg_netdev(vsi);
if (status) {
status = -ENODEV;
goto unroll_vsi_setup;
}
/* netdev has to be configured before setting frame size */
ice_vsi_cfg_frame_size(vsi);
/* Setup DCB netlink interface */
ice_dcbnl_setup(vsi);
/* registering the NAPI handler requires both the queues and
* netdev to be created, which are done in ice_pf_vsi_setup()
* and ice_cfg_netdev() respectively
*/
ice_napi_add(vsi);
status = ice_set_cpu_rx_rmap(vsi);
if (status) {
dev_err(ice_pf_to_dev(pf), "Failed to set CPU Rx map VSI %d error %d\n",
vsi->vsi_num, status);
status = -EINVAL;
goto unroll_napi_add;
}
status = ice_init_mac_fltr(pf);
if (status)
goto free_cpu_rx_map;
return status;
free_cpu_rx_map:
ice_free_cpu_rx_rmap(vsi);
unroll_napi_add:
if (vsi) {
ice_napi_del(vsi);
if (vsi->netdev) {
if (vsi->netdev->reg_state == NETREG_REGISTERED)
unregister_netdev(vsi->netdev);
free_netdev(vsi->netdev);
vsi->netdev = NULL;
}
}
unroll_vsi_setup:
ice_vsi_release(vsi);
return status;
}
/**
* ice_get_avail_q_count - Get count of queues in use
* @pf_qmap: bitmap to get queue use count from
* @lock: pointer to a mutex that protects access to pf_qmap
* @size: size of the bitmap
*/
static u16
ice_get_avail_q_count(unsigned long *pf_qmap, struct mutex *lock, u16 size)
{
unsigned long bit;
u16 count = 0;
mutex_lock(lock);
for_each_clear_bit(bit, pf_qmap, size)
count++;
mutex_unlock(lock);
return count;
}
/**
* ice_get_avail_txq_count - Get count of Tx queues in use
* @pf: pointer to an ice_pf instance
*/
u16 ice_get_avail_txq_count(struct ice_pf *pf)
{
return ice_get_avail_q_count(pf->avail_txqs, &pf->avail_q_mutex,
pf->max_pf_txqs);
}
/**
* ice_get_avail_rxq_count - Get count of Rx queues in use
* @pf: pointer to an ice_pf instance
*/
u16 ice_get_avail_rxq_count(struct ice_pf *pf)
{
return ice_get_avail_q_count(pf->avail_rxqs, &pf->avail_q_mutex,
pf->max_pf_rxqs);
}
/**
* ice_deinit_pf - Unrolls initialziations done by ice_init_pf
* @pf: board private structure to initialize
*/
static void ice_deinit_pf(struct ice_pf *pf)
{
ice_service_task_stop(pf);
mutex_destroy(&pf->sw_mutex);
mutex_destroy(&pf->tc_mutex);
mutex_destroy(&pf->avail_q_mutex);
if (pf->avail_txqs) {
bitmap_free(pf->avail_txqs);
pf->avail_txqs = NULL;
}
if (pf->avail_rxqs) {
bitmap_free(pf->avail_rxqs);
pf->avail_rxqs = NULL;
}
}
/**
* ice_set_pf_caps - set PFs capability flags
* @pf: pointer to the PF instance
*/
static void ice_set_pf_caps(struct ice_pf *pf)
{
struct ice_hw_func_caps *func_caps = &pf->hw.func_caps;
clear_bit(ICE_FLAG_DCB_CAPABLE, pf->flags);
if (func_caps->common_cap.dcb)
set_bit(ICE_FLAG_DCB_CAPABLE, pf->flags);
clear_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags);
if (func_caps->common_cap.sr_iov_1_1) {
set_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags);
pf->num_vfs_supported = min_t(int, func_caps->num_allocd_vfs,
ICE_MAX_VF_COUNT);
}
clear_bit(ICE_FLAG_RSS_ENA, pf->flags);
if (func_caps->common_cap.rss_table_size)
set_bit(ICE_FLAG_RSS_ENA, pf->flags);
clear_bit(ICE_FLAG_FD_ENA, pf->flags);
if (func_caps->fd_fltr_guar > 0 || func_caps->fd_fltr_best_effort > 0) {
u16 unused;
/* ctrl_vsi_idx will be set to a valid value when flow director
* is setup by ice_init_fdir
*/
pf->ctrl_vsi_idx = ICE_NO_VSI;
set_bit(ICE_FLAG_FD_ENA, pf->flags);
/* force guaranteed filter pool for PF */
ice_alloc_fd_guar_item(&pf->hw, &unused,
func_caps->fd_fltr_guar);
/* force shared filter pool for PF */
ice_alloc_fd_shrd_item(&pf->hw, &unused,
func_caps->fd_fltr_best_effort);
}
pf->max_pf_txqs = func_caps->common_cap.num_txq;
pf->max_pf_rxqs = func_caps->common_cap.num_rxq;
}
/**
* ice_init_pf - Initialize general software structures (struct ice_pf)
* @pf: board private structure to initialize
*/
static int ice_init_pf(struct ice_pf *pf)
{
ice_set_pf_caps(pf);
mutex_init(&pf->sw_mutex);
mutex_init(&pf->tc_mutex);
INIT_HLIST_HEAD(&pf->aq_wait_list);
spin_lock_init(&pf->aq_wait_lock);
init_waitqueue_head(&pf->aq_wait_queue);
/* setup service timer and periodic service task */
timer_setup(&pf->serv_tmr, ice_service_timer, 0);
pf->serv_tmr_period = HZ;
INIT_WORK(&pf->serv_task, ice_service_task);
clear_bit(__ICE_SERVICE_SCHED, pf->state);
mutex_init(&pf->avail_q_mutex);
pf->avail_txqs = bitmap_zalloc(pf->max_pf_txqs, GFP_KERNEL);
if (!pf->avail_txqs)
return -ENOMEM;
pf->avail_rxqs = bitmap_zalloc(pf->max_pf_rxqs, GFP_KERNEL);
if (!pf->avail_rxqs) {
bitmap_free(pf->avail_txqs);
pf->avail_txqs = NULL;
return -ENOMEM;
}
return 0;
}
/**
* ice_ena_msix_range - Request a range of MSIX vectors from the OS
* @pf: board private structure
*
* compute the number of MSIX vectors required (v_budget) and request from
* the OS. Return the number of vectors reserved or negative on failure
*/
static int ice_ena_msix_range(struct ice_pf *pf)
{
struct device *dev = ice_pf_to_dev(pf);
int v_left, v_actual, v_budget = 0;
int needed, err, i;
v_left = pf->hw.func_caps.common_cap.num_msix_vectors;
/* reserve one vector for miscellaneous handler */
needed = 1;
if (v_left < needed)
goto no_hw_vecs_left_err;
v_budget += needed;
v_left -= needed;
/* reserve vectors for LAN traffic */
needed = min_t(int, num_online_cpus(), v_left);
if (v_left < needed)
goto no_hw_vecs_left_err;
pf->num_lan_msix = needed;
v_budget += needed;
v_left -= needed;
/* reserve one vector for flow director */
if (test_bit(ICE_FLAG_FD_ENA, pf->flags)) {
needed = ICE_FDIR_MSIX;
if (v_left < needed)
goto no_hw_vecs_left_err;
v_budget += needed;
v_left -= needed;
}
pf->msix_entries = devm_kcalloc(dev, v_budget,
sizeof(*pf->msix_entries), GFP_KERNEL);
if (!pf->msix_entries) {
err = -ENOMEM;
goto exit_err;
}
for (i = 0; i < v_budget; i++)
pf->msix_entries[i].entry = i;
/* actually reserve the vectors */
v_actual = pci_enable_msix_range(pf->pdev, pf->msix_entries,
ICE_MIN_MSIX, v_budget);
if (v_actual < 0) {
dev_err(dev, "unable to reserve MSI-X vectors\n");
err = v_actual;
goto msix_err;
}
if (v_actual < v_budget) {
dev_warn(dev, "not enough OS MSI-X vectors. requested = %d, obtained = %d\n",
v_budget, v_actual);
if (v_actual < ICE_MIN_MSIX) {
/* error if we can't get minimum vectors */
pci_disable_msix(pf->pdev);
err = -ERANGE;
goto msix_err;
} else {
pf->num_lan_msix = ICE_MIN_LAN_TXRX_MSIX;
}
}
return v_actual;
msix_err:
devm_kfree(dev, pf->msix_entries);
goto exit_err;
no_hw_vecs_left_err:
dev_err(dev, "not enough device MSI-X vectors. requested = %d, available = %d\n",
needed, v_left);
err = -ERANGE;
exit_err:
pf->num_lan_msix = 0;
return err;
}
/**
* ice_dis_msix - Disable MSI-X interrupt setup in OS
* @pf: board private structure
*/
static void ice_dis_msix(struct ice_pf *pf)
{
pci_disable_msix(pf->pdev);
devm_kfree(ice_pf_to_dev(pf), pf->msix_entries);
pf->msix_entries = NULL;
}
/**
* ice_clear_interrupt_scheme - Undo things done by ice_init_interrupt_scheme
* @pf: board private structure
*/
static void ice_clear_interrupt_scheme(struct ice_pf *pf)
{
ice_dis_msix(pf);
if (pf->irq_tracker) {
devm_kfree(ice_pf_to_dev(pf), pf->irq_tracker);
pf->irq_tracker = NULL;
}
}
/**
* ice_init_interrupt_scheme - Determine proper interrupt scheme
* @pf: board private structure to initialize
*/
static int ice_init_interrupt_scheme(struct ice_pf *pf)
{
int vectors;
vectors = ice_ena_msix_range(pf);
if (vectors < 0)
return vectors;
/* set up vector assignment tracking */
pf->irq_tracker =
devm_kzalloc(ice_pf_to_dev(pf), sizeof(*pf->irq_tracker) +
(sizeof(u16) * vectors), GFP_KERNEL);
if (!pf->irq_tracker) {
ice_dis_msix(pf);
return -ENOMEM;
}
/* populate SW interrupts pool with number of OS granted IRQs. */
pf->num_avail_sw_msix = (u16)vectors;
pf->irq_tracker->num_entries = (u16)vectors;
pf->irq_tracker->end = pf->irq_tracker->num_entries;
return 0;
}
/**
* ice_is_wol_supported - check if WoL is supported
* @hw: pointer to hardware info
*
* Check if WoL is supported based on the HW configuration.
* Returns true if NVM supports and enables WoL for this port, false otherwise
*/
bool ice_is_wol_supported(struct ice_hw *hw)
{
u16 wol_ctrl;
/* A bit set to 1 in the NVM Software Reserved Word 2 (WoL control
* word) indicates WoL is not supported on the corresponding PF ID.
*/
if (ice_read_sr_word(hw, ICE_SR_NVM_WOL_CFG, &wol_ctrl))
return false;
return !(BIT(hw->port_info->lport) & wol_ctrl);
}
/**
* ice_vsi_recfg_qs - Change the number of queues on a VSI
* @vsi: VSI being changed
* @new_rx: new number of Rx queues
* @new_tx: new number of Tx queues
*
* Only change the number of queues if new_tx, or new_rx is non-0.
*
* Returns 0 on success.
*/
int ice_vsi_recfg_qs(struct ice_vsi *vsi, int new_rx, int new_tx)
{
struct ice_pf *pf = vsi->back;
int err = 0, timeout = 50;
if (!new_rx && !new_tx)
return -EINVAL;
while (test_and_set_bit(__ICE_CFG_BUSY, pf->state)) {
timeout--;
if (!timeout)
return -EBUSY;
usleep_range(1000, 2000);
}
if (new_tx)
vsi->req_txq = (u16)new_tx;
if (new_rx)
vsi->req_rxq = (u16)new_rx;
/* set for the next time the netdev is started */
if (!netif_running(vsi->netdev)) {
ice_vsi_rebuild(vsi, false);
dev_dbg(ice_pf_to_dev(pf), "Link is down, queue count change happens when link is brought up\n");
goto done;
}
ice_vsi_close(vsi);
ice_vsi_rebuild(vsi, false);
ice_pf_dcb_recfg(pf);
ice_vsi_open(vsi);
done:
clear_bit(__ICE_CFG_BUSY, pf->state);
return err;
}
/**
* ice_set_safe_mode_vlan_cfg - configure PF VSI to allow all VLANs in safe mode
* @pf: PF to configure
*
* No VLAN offloads/filtering are advertised in safe mode so make sure the PF
* VSI can still Tx/Rx VLAN tagged packets.
*/
static void ice_set_safe_mode_vlan_cfg(struct ice_pf *pf)
{
struct ice_vsi *vsi = ice_get_main_vsi(pf);
struct ice_vsi_ctx *ctxt;
enum ice_status status;
struct ice_hw *hw;
if (!vsi)
return;
ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
if (!ctxt)
return;
hw = &pf->hw;
ctxt->info = vsi->info;
ctxt->info.valid_sections =
cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID |
ICE_AQ_VSI_PROP_SECURITY_VALID |
ICE_AQ_VSI_PROP_SW_VALID);
/* disable VLAN anti-spoof */
ctxt->info.sec_flags &= ~(ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA <<
ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S);
/* disable VLAN pruning and keep all other settings */
ctxt->info.sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA;
/* allow all VLANs on Tx and don't strip on Rx */
ctxt->info.vlan_flags = ICE_AQ_VSI_VLAN_MODE_ALL |
ICE_AQ_VSI_VLAN_EMOD_NOTHING;
status = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
if (status) {
dev_err(ice_pf_to_dev(vsi->back), "Failed to update VSI for safe mode VLANs, err %s aq_err %s\n",
ice_stat_str(status),
ice_aq_str(hw->adminq.sq_last_status));
} else {
vsi->info.sec_flags = ctxt->info.sec_flags;
vsi->info.sw_flags2 = ctxt->info.sw_flags2;
vsi->info.vlan_flags = ctxt->info.vlan_flags;
}
kfree(ctxt);
}
/**
* ice_log_pkg_init - log result of DDP package load
* @hw: pointer to hardware info
* @status: status of package load
*/
static void
ice_log_pkg_init(struct ice_hw *hw, enum ice_status *status)
{
struct ice_pf *pf = (struct ice_pf *)hw->back;
struct device *dev = ice_pf_to_dev(pf);
switch (*status) {
case ICE_SUCCESS:
/* The package download AdminQ command returned success because
* this download succeeded or ICE_ERR_AQ_NO_WORK since there is
* already a package loaded on the device.
*/
if (hw->pkg_ver.major == hw->active_pkg_ver.major &&
hw->pkg_ver.minor == hw->active_pkg_ver.minor &&
hw->pkg_ver.update == hw->active_pkg_ver.update &&
hw->pkg_ver.draft == hw->active_pkg_ver.draft &&
!memcmp(hw->pkg_name, hw->active_pkg_name,
sizeof(hw->pkg_name))) {
if (hw->pkg_dwnld_status == ICE_AQ_RC_EEXIST)
dev_info(dev, "DDP package already present on device: %s version %d.%d.%d.%d\n",
hw->active_pkg_name,
hw->active_pkg_ver.major,
hw->active_pkg_ver.minor,
hw->active_pkg_ver.update,
hw->active_pkg_ver.draft);
else
dev_info(dev, "The DDP package was successfully loaded: %s version %d.%d.%d.%d\n",
hw->active_pkg_name,
hw->active_pkg_ver.major,
hw->active_pkg_ver.minor,
hw->active_pkg_ver.update,
hw->active_pkg_ver.draft);
} else if (hw->active_pkg_ver.major != ICE_PKG_SUPP_VER_MAJ ||
hw->active_pkg_ver.minor != ICE_PKG_SUPP_VER_MNR) {
dev_err(dev, "The device has a DDP package that is not supported by the driver. The device has package '%s' version %d.%d.x.x. The driver requires version %d.%d.x.x. Entering Safe Mode.\n",
hw->active_pkg_name,
hw->active_pkg_ver.major,
hw->active_pkg_ver.minor,
ICE_PKG_SUPP_VER_MAJ, ICE_PKG_SUPP_VER_MNR);
*status = ICE_ERR_NOT_SUPPORTED;
} else if (hw->active_pkg_ver.major == ICE_PKG_SUPP_VER_MAJ &&
hw->active_pkg_ver.minor == ICE_PKG_SUPP_VER_MNR) {
dev_info(dev, "The driver could not load the DDP package file because a compatible DDP package is already present on the device. The device has package '%s' version %d.%d.%d.%d. The package file found by the driver: '%s' version %d.%d.%d.%d.\n",
hw->active_pkg_name,
hw->active_pkg_ver.major,
hw->active_pkg_ver.minor,
hw->active_pkg_ver.update,
hw->active_pkg_ver.draft,
hw->pkg_name,
hw->pkg_ver.major,
hw->pkg_ver.minor,
hw->pkg_ver.update,
hw->pkg_ver.draft);
} else {
dev_err(dev, "An unknown error occurred when loading the DDP package, please reboot the system. If the problem persists, update the NVM. Entering Safe Mode.\n");
*status = ICE_ERR_NOT_SUPPORTED;
}
break;
case ICE_ERR_FW_DDP_MISMATCH:
dev_err(dev, "The firmware loaded on the device is not compatible with the DDP package. Please update the device's NVM. Entering safe mode.\n");
break;
case ICE_ERR_BUF_TOO_SHORT:
case ICE_ERR_CFG:
dev_err(dev, "The DDP package file is invalid. Entering Safe Mode.\n");
break;
case ICE_ERR_NOT_SUPPORTED:
/* Package File version not supported */
if (hw->pkg_ver.major > ICE_PKG_SUPP_VER_MAJ ||
(hw->pkg_ver.major == ICE_PKG_SUPP_VER_MAJ &&
hw->pkg_ver.minor > ICE_PKG_SUPP_VER_MNR))
dev_err(dev, "The DDP package file version is higher than the driver supports. Please use an updated driver. Entering Safe Mode.\n");
else if (hw->pkg_ver.major < ICE_PKG_SUPP_VER_MAJ ||
(hw->pkg_ver.major == ICE_PKG_SUPP_VER_MAJ &&
hw->pkg_ver.minor < ICE_PKG_SUPP_VER_MNR))
dev_err(dev, "The DDP package file version is lower than the driver supports. The driver requires version %d.%d.x.x. Please use an updated DDP Package file. Entering Safe Mode.\n",
ICE_PKG_SUPP_VER_MAJ, ICE_PKG_SUPP_VER_MNR);
break;
case ICE_ERR_AQ_ERROR:
switch (hw->pkg_dwnld_status) {
case ICE_AQ_RC_ENOSEC:
case ICE_AQ_RC_EBADSIG:
dev_err(dev, "The DDP package could not be loaded because its signature is not valid. Please use a valid DDP Package. Entering Safe Mode.\n");
return;
case ICE_AQ_RC_ESVN:
dev_err(dev, "The DDP Package could not be loaded because its security revision is too low. Please use an updated DDP Package. Entering Safe Mode.\n");
return;
case ICE_AQ_RC_EBADMAN:
case ICE_AQ_RC_EBADBUF:
dev_err(dev, "An error occurred on the device while loading the DDP package. The device will be reset.\n");
/* poll for reset to complete */
if (ice_check_reset(hw))
dev_err(dev, "Error resetting device. Please reload the driver\n");
return;
default:
break;
}
fallthrough;
default:
dev_err(dev, "An unknown error (%d) occurred when loading the DDP package. Entering Safe Mode.\n",
*status);
break;
}
}
/**
* ice_load_pkg - load/reload the DDP Package file
* @firmware: firmware structure when firmware requested or NULL for reload
* @pf: pointer to the PF instance
*
* Called on probe and post CORER/GLOBR rebuild to load DDP Package and
* initialize HW tables.
*/
static void
ice_load_pkg(const struct firmware *firmware, struct ice_pf *pf)
{
enum ice_status status = ICE_ERR_PARAM;
struct device *dev = ice_pf_to_dev(pf);
struct ice_hw *hw = &pf->hw;
/* Load DDP Package */
if (firmware && !hw->pkg_copy) {
status = ice_copy_and_init_pkg(hw, firmware->data,
firmware->size);
ice_log_pkg_init(hw, &status);
} else if (!firmware && hw->pkg_copy) {
/* Reload package during rebuild after CORER/GLOBR reset */
status = ice_init_pkg(hw, hw->pkg_copy, hw->pkg_size);
ice_log_pkg_init(hw, &status);
} else {
dev_err(dev, "The DDP package file failed to load. Entering Safe Mode.\n");
}
if (status) {
/* Safe Mode */
clear_bit(ICE_FLAG_ADV_FEATURES, pf->flags);
return;
}
/* Successful download package is the precondition for advanced
* features, hence setting the ICE_FLAG_ADV_FEATURES flag
*/
set_bit(ICE_FLAG_ADV_FEATURES, pf->flags);
}
/**
* ice_verify_cacheline_size - verify driver's assumption of 64 Byte cache lines
* @pf: pointer to the PF structure
*
* There is no error returned here because the driver should be able to handle
* 128 Byte cache lines, so we only print a warning in case issues are seen,
* specifically with Tx.
*/
static void ice_verify_cacheline_size(struct ice_pf *pf)
{
if (rd32(&pf->hw, GLPCI_CNF2) & GLPCI_CNF2_CACHELINE_SIZE_M)
dev_warn(ice_pf_to_dev(pf), "%d Byte cache line assumption is invalid, driver may have Tx timeouts!\n",
ICE_CACHE_LINE_BYTES);
}
/**
* ice_send_version - update firmware with driver version
* @pf: PF struct
*
* Returns ICE_SUCCESS on success, else error code
*/
static enum ice_status ice_send_version(struct ice_pf *pf)
{
struct ice_driver_ver dv;
dv.major_ver = 0xff;
dv.minor_ver = 0xff;
dv.build_ver = 0xff;
dv.subbuild_ver = 0;
strscpy((char *)dv.driver_string, UTS_RELEASE,
sizeof(dv.driver_string));
return ice_aq_send_driver_ver(&pf->hw, &dv, NULL);
}
/**
* ice_init_fdir - Initialize flow director VSI and configuration
* @pf: pointer to the PF instance
*
* returns 0 on success, negative on error
*/
static int ice_init_fdir(struct ice_pf *pf)
{
struct device *dev = ice_pf_to_dev(pf);
struct ice_vsi *ctrl_vsi;
int err;
/* Side Band Flow Director needs to have a control VSI.
* Allocate it and store it in the PF.
*/
ctrl_vsi = ice_ctrl_vsi_setup(pf, pf->hw.port_info);
if (!ctrl_vsi) {
dev_dbg(dev, "could not create control VSI\n");
return -ENOMEM;
}
err = ice_vsi_open_ctrl(ctrl_vsi);
if (err) {
dev_dbg(dev, "could not open control VSI\n");
goto err_vsi_open;
}
mutex_init(&pf->hw.fdir_fltr_lock);
err = ice_fdir_create_dflt_rules(pf);
if (err)
goto err_fdir_rule;
return 0;
err_fdir_rule:
ice_fdir_release_flows(&pf->hw);
ice_vsi_close(ctrl_vsi);
err_vsi_open:
ice_vsi_release(ctrl_vsi);
if (pf->ctrl_vsi_idx != ICE_NO_VSI) {
pf->vsi[pf->ctrl_vsi_idx] = NULL;
pf->ctrl_vsi_idx = ICE_NO_VSI;
}
return err;
}
/**
* ice_get_opt_fw_name - return optional firmware file name or NULL
* @pf: pointer to the PF instance
*/
static char *ice_get_opt_fw_name(struct ice_pf *pf)
{
/* Optional firmware name same as default with additional dash
* followed by a EUI-64 identifier (PCIe Device Serial Number)
*/
struct pci_dev *pdev = pf->pdev;
char *opt_fw_filename;
u64 dsn;
/* Determine the name of the optional file using the DSN (two
* dwords following the start of the DSN Capability).
*/
dsn = pci_get_dsn(pdev);
if (!dsn)
return NULL;
opt_fw_filename = kzalloc(NAME_MAX, GFP_KERNEL);
if (!opt_fw_filename)
return NULL;
snprintf(opt_fw_filename, NAME_MAX, "%sice-%016llx.pkg",
ICE_DDP_PKG_PATH, dsn);
return opt_fw_filename;
}
/**
* ice_request_fw - Device initialization routine
* @pf: pointer to the PF instance
*/
static void ice_request_fw(struct ice_pf *pf)
{
char *opt_fw_filename = ice_get_opt_fw_name(pf);
const struct firmware *firmware = NULL;
struct device *dev = ice_pf_to_dev(pf);
int err = 0;
/* optional device-specific DDP (if present) overrides the default DDP
* package file. kernel logs a debug message if the file doesn't exist,
* and warning messages for other errors.
*/
if (opt_fw_filename) {
err = firmware_request_nowarn(&firmware, opt_fw_filename, dev);
if (err) {
kfree(opt_fw_filename);
goto dflt_pkg_load;
}
/* request for firmware was successful. Download to device */
ice_load_pkg(firmware, pf);
kfree(opt_fw_filename);
release_firmware(firmware);
return;
}
dflt_pkg_load:
err = request_firmware(&firmware, ICE_DDP_PKG_FILE, dev);
if (err) {
dev_err(dev, "The DDP package file was not found or could not be read. Entering Safe Mode\n");
return;
}
/* request for firmware was successful. Download to device */
ice_load_pkg(firmware, pf);
release_firmware(firmware);
}
/**
* ice_print_wake_reason - show the wake up cause in the log
* @pf: pointer to the PF struct
*/
static void ice_print_wake_reason(struct ice_pf *pf)
{
u32 wus = pf->wakeup_reason;
const char *wake_str;
/* if no wake event, nothing to print */
if (!wus)
return;
if (wus & PFPM_WUS_LNKC_M)
wake_str = "Link\n";
else if (wus & PFPM_WUS_MAG_M)
wake_str = "Magic Packet\n";
else if (wus & PFPM_WUS_MNG_M)
wake_str = "Management\n";
else if (wus & PFPM_WUS_FW_RST_WK_M)
wake_str = "Firmware Reset\n";
else
wake_str = "Unknown\n";
dev_info(ice_pf_to_dev(pf), "Wake reason: %s", wake_str);
}
/**
* ice_probe - Device initialization routine
* @pdev: PCI device information struct
* @ent: entry in ice_pci_tbl
*
* Returns 0 on success, negative on failure
*/
static int
ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent)
{
struct device *dev = &pdev->dev;
struct ice_pf *pf;
struct ice_hw *hw;
int i, err;
if (pdev->is_virtfn) {
dev_err(dev, "can't probe a virtual function\n");
return -EINVAL;
}
/* this driver uses devres, see
* Documentation/driver-api/driver-model/devres.rst
*/
err = pcim_enable_device(pdev);
if (err)
return err;
err = pcim_iomap_regions(pdev, BIT(ICE_BAR0), pci_name(pdev));
if (err) {
dev_err(dev, "BAR0 I/O map error %d\n", err);
return err;
}
pf = ice_allocate_pf(dev);
if (!pf)
return -ENOMEM;
/* set up for high or low DMA */
err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
if (err)
err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
if (err) {
dev_err(dev, "DMA configuration failed: 0x%x\n", err);
return err;
}
pci_enable_pcie_error_reporting(pdev);
pci_set_master(pdev);
pf->pdev = pdev;
pci_set_drvdata(pdev, pf);
set_bit(__ICE_DOWN, pf->state);
/* Disable service task until DOWN bit is cleared */
set_bit(__ICE_SERVICE_DIS, pf->state);
hw = &pf->hw;
hw->hw_addr = pcim_iomap_table(pdev)[ICE_BAR0];
pci_save_state(pdev);
hw->back = pf;
hw->vendor_id = pdev->vendor;
hw->device_id = pdev->device;
pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
hw->subsystem_vendor_id = pdev->subsystem_vendor;
hw->subsystem_device_id = pdev->subsystem_device;
hw->bus.device = PCI_SLOT(pdev->devfn);
hw->bus.func = PCI_FUNC(pdev->devfn);
ice_set_ctrlq_len(hw);
pf->msg_enable = netif_msg_init(debug, ICE_DFLT_NETIF_M);
err = ice_devlink_register(pf);
if (err) {
dev_err(dev, "ice_devlink_register failed: %d\n", err);
goto err_exit_unroll;
}
#ifndef CONFIG_DYNAMIC_DEBUG
if (debug < -1)
hw->debug_mask = debug;
#endif
err = ice_init_hw(hw);
if (err) {
dev_err(dev, "ice_init_hw failed: %d\n", err);
err = -EIO;
goto err_exit_unroll;
}
ice_request_fw(pf);
/* if ice_request_fw fails, ICE_FLAG_ADV_FEATURES bit won't be
* set in pf->state, which will cause ice_is_safe_mode to return
* true
*/
if (ice_is_safe_mode(pf)) {
dev_err(dev, "Package download failed. Advanced features disabled - Device now in Safe Mode\n");
/* we already got function/device capabilities but these don't
* reflect what the driver needs to do in safe mode. Instead of
* adding conditional logic everywhere to ignore these
* device/function capabilities, override them.
*/
ice_set_safe_mode_caps(hw);
}
err = ice_init_pf(pf);
if (err) {
dev_err(dev, "ice_init_pf failed: %d\n", err);
goto err_init_pf_unroll;
}
ice_devlink_init_regions(pf);
pf->hw.udp_tunnel_nic.set_port = ice_udp_tunnel_set_port;
pf->hw.udp_tunnel_nic.unset_port = ice_udp_tunnel_unset_port;
pf->hw.udp_tunnel_nic.flags = UDP_TUNNEL_NIC_INFO_MAY_SLEEP;
pf->hw.udp_tunnel_nic.shared = &pf->hw.udp_tunnel_shared;
i = 0;
if (pf->hw.tnl.valid_count[TNL_VXLAN]) {
pf->hw.udp_tunnel_nic.tables[i].n_entries =
pf->hw.tnl.valid_count[TNL_VXLAN];
pf->hw.udp_tunnel_nic.tables[i].tunnel_types =
UDP_TUNNEL_TYPE_VXLAN;
i++;
}
if (pf->hw.tnl.valid_count[TNL_GENEVE]) {
pf->hw.udp_tunnel_nic.tables[i].n_entries =
pf->hw.tnl.valid_count[TNL_GENEVE];
pf->hw.udp_tunnel_nic.tables[i].tunnel_types =
UDP_TUNNEL_TYPE_GENEVE;
i++;
}
pf->num_alloc_vsi = hw->func_caps.guar_num_vsi;
if (!pf->num_alloc_vsi) {
err = -EIO;
goto err_init_pf_unroll;
}
if (pf->num_alloc_vsi > UDP_TUNNEL_NIC_MAX_SHARING_DEVICES) {
dev_warn(&pf->pdev->dev,
"limiting the VSI count due to UDP tunnel limitation %d > %d\n",
pf->num_alloc_vsi, UDP_TUNNEL_NIC_MAX_SHARING_DEVICES);
pf->num_alloc_vsi = UDP_TUNNEL_NIC_MAX_SHARING_DEVICES;
}
pf->vsi = devm_kcalloc(dev, pf->num_alloc_vsi, sizeof(*pf->vsi),
GFP_KERNEL);
if (!pf->vsi) {
err = -ENOMEM;
goto err_init_pf_unroll;
}
err = ice_init_interrupt_scheme(pf);
if (err) {
dev_err(dev, "ice_init_interrupt_scheme failed: %d\n", err);
err = -EIO;
goto err_init_vsi_unroll;
}
/* In case of MSIX we are going to setup the misc vector right here
* to handle admin queue events etc. In case of legacy and MSI
* the misc functionality and queue processing is combined in
* the same vector and that gets setup at open.
*/
err = ice_req_irq_msix_misc(pf);
if (err) {
dev_err(dev, "setup of misc vector failed: %d\n", err);
goto err_init_interrupt_unroll;
}
/* create switch struct for the switch element created by FW on boot */
pf->first_sw = devm_kzalloc(dev, sizeof(*pf->first_sw), GFP_KERNEL);
if (!pf->first_sw) {
err = -ENOMEM;
goto err_msix_misc_unroll;
}
if (hw->evb_veb)
pf->first_sw->bridge_mode = BRIDGE_MODE_VEB;
else
pf->first_sw->bridge_mode = BRIDGE_MODE_VEPA;
pf->first_sw->pf = pf;
/* record the sw_id available for later use */
pf->first_sw->sw_id = hw->port_info->sw_id;
err = ice_setup_pf_sw(pf);
if (err) {
dev_err(dev, "probe failed due to setup PF switch: %d\n", err);
goto err_alloc_sw_unroll;
}
clear_bit(__ICE_SERVICE_DIS, pf->state);
/* tell the firmware we are up */
err = ice_send_version(pf);
if (err) {
dev_err(dev, "probe failed sending driver version %s. error: %d\n",
UTS_RELEASE, err);
goto err_send_version_unroll;
}
/* since everything is good, start the service timer */
mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period));
err = ice_init_link_events(pf->hw.port_info);
if (err) {
dev_err(dev, "ice_init_link_events failed: %d\n", err);
goto err_send_version_unroll;
}
/* not a fatal error if this fails */
err = ice_init_nvm_phy_type(pf->hw.port_info);
if (err)
dev_err(dev, "ice_init_nvm_phy_type failed: %d\n", err);
/* not a fatal error if this fails */
err = ice_update_link_info(pf->hw.port_info);
if (err)
dev_err(dev, "ice_update_link_info failed: %d\n", err);
ice_init_link_dflt_override(pf->hw.port_info);
/* if media available, initialize PHY settings */
if (pf->hw.port_info->phy.link_info.link_info &
ICE_AQ_MEDIA_AVAILABLE) {
/* not a fatal error if this fails */
err = ice_init_phy_user_cfg(pf->hw.port_info);
if (err)
dev_err(dev, "ice_init_phy_user_cfg failed: %d\n", err);
if (!test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, pf->flags)) {
struct ice_vsi *vsi = ice_get_main_vsi(pf);
if (vsi)
ice_configure_phy(vsi);
}
} else {
set_bit(ICE_FLAG_NO_MEDIA, pf->flags);
}
ice_verify_cacheline_size(pf);
/* Save wakeup reason register for later use */
pf->wakeup_reason = rd32(hw, PFPM_WUS);
/* check for a power management event */
ice_print_wake_reason(pf);
/* clear wake status, all bits */
wr32(hw, PFPM_WUS, U32_MAX);
/* Disable WoL at init, wait for user to enable */
device_set_wakeup_enable(dev, false);
if (ice_is_safe_mode(pf)) {
ice_set_safe_mode_vlan_cfg(pf);
goto probe_done;
}
/* initialize DDP driven features */
/* Note: Flow director init failure is non-fatal to load */
if (ice_init_fdir(pf))
dev_err(dev, "could not initialize flow director\n");
/* Note: DCB init failure is non-fatal to load */
if (ice_init_pf_dcb(pf, false)) {
clear_bit(ICE_FLAG_DCB_CAPABLE, pf->flags);
clear_bit(ICE_FLAG_DCB_ENA, pf->flags);
} else {
ice_cfg_lldp_mib_change(&pf->hw, true);
}
/* print PCI link speed and width */
pcie_print_link_status(pf->pdev);
probe_done:
/* ready to go, so clear down state bit */
clear_bit(__ICE_DOWN, pf->state);
return 0;
err_send_version_unroll:
ice_vsi_release_all(pf);
err_alloc_sw_unroll:
set_bit(__ICE_SERVICE_DIS, pf->state);
set_bit(__ICE_DOWN, pf->state);
devm_kfree(dev, pf->first_sw);
err_msix_misc_unroll:
ice_free_irq_msix_misc(pf);
err_init_interrupt_unroll:
ice_clear_interrupt_scheme(pf);
err_init_vsi_unroll:
devm_kfree(dev, pf->vsi);
err_init_pf_unroll:
ice_deinit_pf(pf);
ice_devlink_destroy_regions(pf);
ice_deinit_hw(hw);
err_exit_unroll:
ice_devlink_unregister(pf);
pci_disable_pcie_error_reporting(pdev);
pci_disable_device(pdev);
return err;
}
/**
* ice_set_wake - enable or disable Wake on LAN
* @pf: pointer to the PF struct
*
* Simple helper for WoL control
*/
static void ice_set_wake(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
bool wol = pf->wol_ena;
/* clear wake state, otherwise new wake events won't fire */
wr32(hw, PFPM_WUS, U32_MAX);
/* enable / disable APM wake up, no RMW needed */
wr32(hw, PFPM_APM, wol ? PFPM_APM_APME_M : 0);
/* set magic packet filter enabled */
wr32(hw, PFPM_WUFC, wol ? PFPM_WUFC_MAG_M : 0);
}
/**
* ice_setup_magic_mc_wake - setup device to wake on multicast magic packet
* @pf: pointer to the PF struct
*
* Issue firmware command to enable multicast magic wake, making
* sure that any locally administered address (LAA) is used for
* wake, and that PF reset doesn't undo the LAA.
*/
static void ice_setup_mc_magic_wake(struct ice_pf *pf)
{
struct device *dev = ice_pf_to_dev(pf);
struct ice_hw *hw = &pf->hw;
enum ice_status status;
u8 mac_addr[ETH_ALEN];
struct ice_vsi *vsi;
u8 flags;
if (!pf->wol_ena)
return;
vsi = ice_get_main_vsi(pf);
if (!vsi)
return;
/* Get current MAC address in case it's an LAA */
if (vsi->netdev)
ether_addr_copy(mac_addr, vsi->netdev->dev_addr);
else
ether_addr_copy(mac_addr, vsi->port_info->mac.perm_addr);
flags = ICE_AQC_MAN_MAC_WR_MC_MAG_EN |
ICE_AQC_MAN_MAC_UPDATE_LAA_WOL |
ICE_AQC_MAN_MAC_WR_WOL_LAA_PFR_KEEP;
status = ice_aq_manage_mac_write(hw, mac_addr, flags, NULL);
if (status)
dev_err(dev, "Failed to enable Multicast Magic Packet wake, err %s aq_err %s\n",
ice_stat_str(status),
ice_aq_str(hw->adminq.sq_last_status));
}
/**
* ice_remove - Device removal routine
* @pdev: PCI device information struct
*/
static void ice_remove(struct pci_dev *pdev)
{
struct ice_pf *pf = pci_get_drvdata(pdev);
int i;
for (i = 0; i < ICE_MAX_RESET_WAIT; i++) {
if (!ice_is_reset_in_progress(pf->state))
break;
msleep(100);
}
if (test_bit(ICE_FLAG_SRIOV_ENA, pf->flags)) {
set_bit(__ICE_VF_RESETS_DISABLED, pf->state);
ice_free_vfs(pf);
}
set_bit(__ICE_DOWN, pf->state);
ice_service_task_stop(pf);
ice_aq_cancel_waiting_tasks(pf);
mutex_destroy(&(&pf->hw)->fdir_fltr_lock);
if (!ice_is_safe_mode(pf))
ice_remove_arfs(pf);
ice_setup_mc_magic_wake(pf);
ice_vsi_release_all(pf);
ice_set_wake(pf);
ice_free_irq_msix_misc(pf);
ice_for_each_vsi(pf, i) {
if (!pf->vsi[i])
continue;
ice_vsi_free_q_vectors(pf->vsi[i]);
}
ice_deinit_pf(pf);
ice_devlink_destroy_regions(pf);
ice_deinit_hw(&pf->hw);
ice_devlink_unregister(pf);
/* Issue a PFR as part of the prescribed driver unload flow. Do not
* do it via ice_schedule_reset() since there is no need to rebuild
* and the service task is already stopped.
*/
ice_reset(&pf->hw, ICE_RESET_PFR);
pci_wait_for_pending_transaction(pdev);
ice_clear_interrupt_scheme(pf);
pci_disable_pcie_error_reporting(pdev);
pci_disable_device(pdev);
}
/**
* ice_shutdown - PCI callback for shutting down device
* @pdev: PCI device information struct
*/
static void ice_shutdown(struct pci_dev *pdev)
{
struct ice_pf *pf = pci_get_drvdata(pdev);
ice_remove(pdev);
if (system_state == SYSTEM_POWER_OFF) {
pci_wake_from_d3(pdev, pf->wol_ena);
pci_set_power_state(pdev, PCI_D3hot);
}
}
#ifdef CONFIG_PM
/**
* ice_prepare_for_shutdown - prep for PCI shutdown
* @pf: board private structure
*
* Inform or close all dependent features in prep for PCI device shutdown
*/
static void ice_prepare_for_shutdown(struct ice_pf *pf)
{
struct ice_hw *hw = &pf->hw;
u32 v;
/* Notify VFs of impending reset */
if (ice_check_sq_alive(hw, &hw->mailboxq))
ice_vc_notify_reset(pf);
dev_dbg(ice_pf_to_dev(pf), "Tearing down internal switch for shutdown\n");
/* disable the VSIs and their queues that are not already DOWN */
ice_pf_dis_all_vsi(pf, false);
ice_for_each_vsi(pf, v)
if (pf->vsi[v])
pf->vsi[v]->vsi_num = 0;
ice_shutdown_all_ctrlq(hw);
}
/**
* ice_reinit_interrupt_scheme - Reinitialize interrupt scheme
* @pf: board private structure to reinitialize
*
* This routine reinitialize interrupt scheme that was cleared during
* power management suspend callback.
*
* This should be called during resume routine to re-allocate the q_vectors
* and reacquire interrupts.
*/
static int ice_reinit_interrupt_scheme(struct ice_pf *pf)
{
struct device *dev = ice_pf_to_dev(pf);
int ret, v;
/* Since we clear MSIX flag during suspend, we need to
* set it back during resume...
*/
ret = ice_init_interrupt_scheme(pf);
if (ret) {
dev_err(dev, "Failed to re-initialize interrupt %d\n", ret);
return ret;
}
/* Remap vectors and rings, after successful re-init interrupts */
ice_for_each_vsi(pf, v) {
if (!pf->vsi[v])
continue;
ret = ice_vsi_alloc_q_vectors(pf->vsi[v]);
if (ret)
goto err_reinit;
ice_vsi_map_rings_to_vectors(pf->vsi[v]);
}
ret = ice_req_irq_msix_misc(pf);
if (ret) {
dev_err(dev, "Setting up misc vector failed after device suspend %d\n",
ret);
goto err_reinit;
}
return 0;
err_reinit:
while (v--)
if (pf->vsi[v])
ice_vsi_free_q_vectors(pf->vsi[v]);
return ret;
}
/**
* ice_suspend
* @dev: generic device information structure
*
* Power Management callback to quiesce the device and prepare
* for D3 transition.
*/
static int __maybe_unused ice_suspend(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct ice_pf *pf;
int disabled, v;
pf = pci_get_drvdata(pdev);
if (!ice_pf_state_is_nominal(pf)) {
dev_err(dev, "Device is not ready, no need to suspend it\n");
return -EBUSY;
}
/* Stop watchdog tasks until resume completion.
* Even though it is most likely that the service task is
* disabled if the device is suspended or down, the service task's
* state is controlled by a different state bit, and we should
* store and honor whatever state that bit is in at this point.
*/
disabled = ice_service_task_stop(pf);
/* Already suspended?, then there is nothing to do */
if (test_and_set_bit(__ICE_SUSPENDED, pf->state)) {
if (!disabled)
ice_service_task_restart(pf);
return 0;
}
if (test_bit(__ICE_DOWN, pf->state) ||
ice_is_reset_in_progress(pf->state)) {
dev_err(dev, "can't suspend device in reset or already down\n");
if (!disabled)
ice_service_task_restart(pf);
return 0;
}
ice_setup_mc_magic_wake(pf);
ice_prepare_for_shutdown(pf);
ice_set_wake(pf);
/* Free vectors, clear the interrupt scheme and release IRQs
* for proper hibernation, especially with large number of CPUs.
* Otherwise hibernation might fail when mapping all the vectors back
* to CPU0.
*/
ice_free_irq_msix_misc(pf);
ice_for_each_vsi(pf, v) {
if (!pf->vsi[v])
continue;
ice_vsi_free_q_vectors(pf->vsi[v]);
}
ice_free_cpu_rx_rmap(ice_get_main_vsi(pf));
ice_clear_interrupt_scheme(pf);
pci_save_state(pdev);
pci_wake_from_d3(pdev, pf->wol_ena);
pci_set_power_state(pdev, PCI_D3hot);
return 0;
}
/**
* ice_resume - PM callback for waking up from D3
* @dev: generic device information structure
*/
static int __maybe_unused ice_resume(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
enum ice_reset_req reset_type;
struct ice_pf *pf;
struct ice_hw *hw;
int ret;
pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev);
pci_save_state(pdev);
if (!pci_device_is_present(pdev))
return -ENODEV;
ret = pci_enable_device_mem(pdev);
if (ret) {
dev_err(dev, "Cannot enable device after suspend\n");
return ret;
}
pf = pci_get_drvdata(pdev);
hw = &pf->hw;
pf->wakeup_reason = rd32(hw, PFPM_WUS);
ice_print_wake_reason(pf);
/* We cleared the interrupt scheme when we suspended, so we need to
* restore it now to resume device functionality.
*/
ret = ice_reinit_interrupt_scheme(pf);
if (ret)
dev_err(dev, "Cannot restore interrupt scheme: %d\n", ret);
clear_bit(__ICE_DOWN, pf->state);
/* Now perform PF reset and rebuild */
reset_type = ICE_RESET_PFR;
/* re-enable service task for reset, but allow reset to schedule it */
clear_bit(__ICE_SERVICE_DIS, pf->state);
if (ice_schedule_reset(pf, reset_type))
dev_err(dev, "Reset during resume failed.\n");
clear_bit(__ICE_SUSPENDED, pf->state);
ice_service_task_restart(pf);
/* Restart the service task */
mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period));
return 0;
}
#endif /* CONFIG_PM */
/**
* ice_pci_err_detected - warning that PCI error has been detected
* @pdev: PCI device information struct
* @err: the type of PCI error
*
* Called to warn that something happened on the PCI bus and the error handling
* is in progress. Allows the driver to gracefully prepare/handle PCI errors.
*/
static pci_ers_result_t
ice_pci_err_detected(struct pci_dev *pdev, pci_channel_state_t err)
{
struct ice_pf *pf = pci_get_drvdata(pdev);
if (!pf) {
dev_err(&pdev->dev, "%s: unrecoverable device error %d\n",
__func__, err);
return PCI_ERS_RESULT_DISCONNECT;
}
if (!test_bit(__ICE_SUSPENDED, pf->state)) {
ice_service_task_stop(pf);
if (!test_bit(__ICE_PREPARED_FOR_RESET, pf->state)) {
set_bit(__ICE_PFR_REQ, pf->state);
ice_prepare_for_reset(pf);
}
}
return PCI_ERS_RESULT_NEED_RESET;
}
/**
* ice_pci_err_slot_reset - a PCI slot reset has just happened
* @pdev: PCI device information struct
*
* Called to determine if the driver can recover from the PCI slot reset by
* using a register read to determine if the device is recoverable.
*/
static pci_ers_result_t ice_pci_err_slot_reset(struct pci_dev *pdev)
{
struct ice_pf *pf = pci_get_drvdata(pdev);
pci_ers_result_t result;
int err;
u32 reg;
err = pci_enable_device_mem(pdev);
if (err) {
dev_err(&pdev->dev, "Cannot re-enable PCI device after reset, error %d\n",
err);
result = PCI_ERS_RESULT_DISCONNECT;
} else {
pci_set_master(pdev);
pci_restore_state(pdev);
pci_save_state(pdev);
pci_wake_from_d3(pdev, false);
/* Check for life */
reg = rd32(&pf->hw, GLGEN_RTRIG);
if (!reg)
result = PCI_ERS_RESULT_RECOVERED;
else
result = PCI_ERS_RESULT_DISCONNECT;
}
err = pci_aer_clear_nonfatal_status(pdev);
if (err)
dev_dbg(&pdev->dev, "pci_aer_clear_nonfatal_status() failed, error %d\n",
err);
/* non-fatal, continue */
return result;
}
/**
* ice_pci_err_resume - restart operations after PCI error recovery
* @pdev: PCI device information struct
*
* Called to allow the driver to bring things back up after PCI error and/or
* reset recovery have finished
*/
static void ice_pci_err_resume(struct pci_dev *pdev)
{
struct ice_pf *pf = pci_get_drvdata(pdev);
if (!pf) {
dev_err(&pdev->dev, "%s failed, device is unrecoverable\n",
__func__);
return;
}
if (test_bit(__ICE_SUSPENDED, pf->state)) {
dev_dbg(&pdev->dev, "%s failed to resume normal operations!\n",
__func__);
return;
}
ice_restore_all_vfs_msi_state(pdev);
ice_do_reset(pf, ICE_RESET_PFR);
ice_service_task_restart(pf);
mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period));
}
/**
* ice_pci_err_reset_prepare - prepare device driver for PCI reset
* @pdev: PCI device information struct
*/
static void ice_pci_err_reset_prepare(struct pci_dev *pdev)
{
struct ice_pf *pf = pci_get_drvdata(pdev);
if (!test_bit(__ICE_SUSPENDED, pf->state)) {
ice_service_task_stop(pf);
if (!test_bit(__ICE_PREPARED_FOR_RESET, pf->state)) {
set_bit(__ICE_PFR_REQ, pf->state);
ice_prepare_for_reset(pf);
}
}
}
/**
* ice_pci_err_reset_done - PCI reset done, device driver reset can begin
* @pdev: PCI device information struct
*/
static void ice_pci_err_reset_done(struct pci_dev *pdev)
{
ice_pci_err_resume(pdev);
}
/* ice_pci_tbl - PCI Device ID Table
*
* Wildcard entries (PCI_ANY_ID) should come last
* Last entry must be all 0s
*
* { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
* Class, Class Mask, private data (not used) }
*/
static const struct pci_device_id ice_pci_tbl[] = {
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810C_BACKPLANE), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810C_QSFP), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810C_SFP), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810_XXV_BACKPLANE), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810_XXV_QSFP), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E810_XXV_SFP), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_BACKPLANE), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_QSFP), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_SFP), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_10G_BASE_T), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823C_SGMII), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_BACKPLANE), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_QSFP), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_SFP), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_10G_BASE_T), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822C_SGMII), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822L_BACKPLANE), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822L_SFP), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822L_10G_BASE_T), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E822L_SGMII), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_BACKPLANE), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_SFP), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_10G_BASE_T), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_1GBE), 0 },
{ PCI_VDEVICE(INTEL, ICE_DEV_ID_E823L_QSFP), 0 },
/* required last entry */
{ 0, }
};
MODULE_DEVICE_TABLE(pci, ice_pci_tbl);
static __maybe_unused SIMPLE_DEV_PM_OPS(ice_pm_ops, ice_suspend, ice_resume);
static const struct pci_error_handlers ice_pci_err_handler = {
.error_detected = ice_pci_err_detected,
.slot_reset = ice_pci_err_slot_reset,
.reset_prepare = ice_pci_err_reset_prepare,
.reset_done = ice_pci_err_reset_done,
.resume = ice_pci_err_resume
};
static struct pci_driver ice_driver = {
.name = KBUILD_MODNAME,
.id_table = ice_pci_tbl,
.probe = ice_probe,
.remove = ice_remove,
#ifdef CONFIG_PM
.driver.pm = &ice_pm_ops,
#endif /* CONFIG_PM */
.shutdown = ice_shutdown,
.sriov_configure = ice_sriov_configure,
.err_handler = &ice_pci_err_handler
};
/**
* ice_module_init - Driver registration routine
*
* ice_module_init is the first routine called when the driver is
* loaded. All it does is register with the PCI subsystem.
*/
static int __init ice_module_init(void)
{
int status;
pr_info("%s\n", ice_driver_string);
pr_info("%s\n", ice_copyright);
ice_wq = alloc_workqueue("%s", 0, 0, KBUILD_MODNAME);
if (!ice_wq) {
pr_err("Failed to create workqueue\n");
return -ENOMEM;
}
status = pci_register_driver(&ice_driver);
if (status) {
pr_err("failed to register PCI driver, err %d\n", status);
destroy_workqueue(ice_wq);
}
return status;
}
module_init(ice_module_init);
/**
* ice_module_exit - Driver exit cleanup routine
*
* ice_module_exit is called just before the driver is removed
* from memory.
*/
static void __exit ice_module_exit(void)
{
pci_unregister_driver(&ice_driver);
destroy_workqueue(ice_wq);
pr_info("module unloaded\n");
}
module_exit(ice_module_exit);
/**
* ice_set_mac_address - NDO callback to set MAC address
* @netdev: network interface device structure
* @pi: pointer to an address structure
*
* Returns 0 on success, negative on failure
*/
static int ice_set_mac_address(struct net_device *netdev, void *pi)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
struct sockaddr *addr = pi;
enum ice_status status;
u8 old_mac[ETH_ALEN];
u8 flags = 0;
int err = 0;
u8 *mac;
mac = (u8 *)addr->sa_data;
if (!is_valid_ether_addr(mac))
return -EADDRNOTAVAIL;
if (ether_addr_equal(netdev->dev_addr, mac)) {
netdev_dbg(netdev, "already using mac %pM\n", mac);
return 0;
}
if (test_bit(__ICE_DOWN, pf->state) ||
ice_is_reset_in_progress(pf->state)) {
netdev_err(netdev, "can't set mac %pM. device not ready\n",
mac);
return -EBUSY;
}
netif_addr_lock_bh(netdev);
ether_addr_copy(old_mac, netdev->dev_addr);
/* change the netdev's MAC address */
memcpy(netdev->dev_addr, mac, netdev->addr_len);
netif_addr_unlock_bh(netdev);
/* Clean up old MAC filter. Not an error if old filter doesn't exist */
status = ice_fltr_remove_mac(vsi, old_mac, ICE_FWD_TO_VSI);
if (status && status != ICE_ERR_DOES_NOT_EXIST) {
err = -EADDRNOTAVAIL;
goto err_update_filters;
}
/* Add filter for new MAC. If filter exists, return success */
status = ice_fltr_add_mac(vsi, mac, ICE_FWD_TO_VSI);
if (status == ICE_ERR_ALREADY_EXISTS)
/* Although this MAC filter is already present in hardware it's
* possible in some cases (e.g. bonding) that dev_addr was
* modified outside of the driver and needs to be restored back
* to this value.
*/
netdev_dbg(netdev, "filter for MAC %pM already exists\n", mac);
else if (status)
/* error if the new filter addition failed */
err = -EADDRNOTAVAIL;
err_update_filters:
if (err) {
netdev_err(netdev, "can't set MAC %pM. filter update failed\n",
mac);
netif_addr_lock_bh(netdev);
ether_addr_copy(netdev->dev_addr, old_mac);
netif_addr_unlock_bh(netdev);
return err;
}
netdev_dbg(vsi->netdev, "updated MAC address to %pM\n",
netdev->dev_addr);
/* write new MAC address to the firmware */
flags = ICE_AQC_MAN_MAC_UPDATE_LAA_WOL;
status = ice_aq_manage_mac_write(hw, mac, flags, NULL);
if (status) {
netdev_err(netdev, "can't set MAC %pM. write to firmware failed error %s\n",
mac, ice_stat_str(status));
}
return 0;
}
/**
* ice_set_rx_mode - NDO callback to set the netdev filters
* @netdev: network interface device structure
*/
static void ice_set_rx_mode(struct net_device *netdev)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
if (!vsi)
return;
/* Set the flags to synchronize filters
* ndo_set_rx_mode may be triggered even without a change in netdev
* flags
*/
set_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags);
set_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags);
set_bit(ICE_FLAG_FLTR_SYNC, vsi->back->flags);
/* schedule our worker thread which will take care of
* applying the new filter changes
*/
ice_service_task_schedule(vsi->back);
}
/**
* ice_set_tx_maxrate - NDO callback to set the maximum per-queue bitrate
* @netdev: network interface device structure
* @queue_index: Queue ID
* @maxrate: maximum bandwidth in Mbps
*/
static int
ice_set_tx_maxrate(struct net_device *netdev, int queue_index, u32 maxrate)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
enum ice_status status;
u16 q_handle;
u8 tc;
/* Validate maxrate requested is within permitted range */
if (maxrate && (maxrate > (ICE_SCHED_MAX_BW / 1000))) {
netdev_err(netdev, "Invalid max rate %d specified for the queue %d\n",
maxrate, queue_index);
return -EINVAL;
}
q_handle = vsi->tx_rings[queue_index]->q_handle;
tc = ice_dcb_get_tc(vsi, queue_index);
/* Set BW back to default, when user set maxrate to 0 */
if (!maxrate)
status = ice_cfg_q_bw_dflt_lmt(vsi->port_info, vsi->idx, tc,
q_handle, ICE_MAX_BW);
else
status = ice_cfg_q_bw_lmt(vsi->port_info, vsi->idx, tc,
q_handle, ICE_MAX_BW, maxrate * 1000);
if (status) {
netdev_err(netdev, "Unable to set Tx max rate, error %s\n",
ice_stat_str(status));
return -EIO;
}
return 0;
}
/**
* ice_fdb_add - add an entry to the hardware database
* @ndm: the input from the stack
* @tb: pointer to array of nladdr (unused)
* @dev: the net device pointer
* @addr: the MAC address entry being added
* @vid: VLAN ID
* @flags: instructions from stack about fdb operation
* @extack: netlink extended ack
*/
static int
ice_fdb_add(struct ndmsg *ndm, struct nlattr __always_unused *tb[],
struct net_device *dev, const unsigned char *addr, u16 vid,
u16 flags, struct netlink_ext_ack __always_unused *extack)
{
int err;
if (vid) {
netdev_err(dev, "VLANs aren't supported yet for dev_uc|mc_add()\n");
return -EINVAL;
}
if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
netdev_err(dev, "FDB only supports static addresses\n");
return -EINVAL;
}
if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
err = dev_uc_add_excl(dev, addr);
else if (is_multicast_ether_addr(addr))
err = dev_mc_add_excl(dev, addr);
else
err = -EINVAL;
/* Only return duplicate errors if NLM_F_EXCL is set */
if (err == -EEXIST && !(flags & NLM_F_EXCL))
err = 0;
return err;
}
/**
* ice_fdb_del - delete an entry from the hardware database
* @ndm: the input from the stack
* @tb: pointer to array of nladdr (unused)
* @dev: the net device pointer
* @addr: the MAC address entry being added
* @vid: VLAN ID
*/
static int
ice_fdb_del(struct ndmsg *ndm, __always_unused struct nlattr *tb[],
struct net_device *dev, const unsigned char *addr,
__always_unused u16 vid)
{
int err;
if (ndm->ndm_state & NUD_PERMANENT) {
netdev_err(dev, "FDB only supports static addresses\n");
return -EINVAL;
}
if (is_unicast_ether_addr(addr))
err = dev_uc_del(dev, addr);
else if (is_multicast_ether_addr(addr))
err = dev_mc_del(dev, addr);
else
err = -EINVAL;
return err;
}
/**
* ice_set_features - set the netdev feature flags
* @netdev: ptr to the netdev being adjusted
* @features: the feature set that the stack is suggesting
*/
static int
ice_set_features(struct net_device *netdev, netdev_features_t features)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
int ret = 0;
/* Don't set any netdev advanced features with device in Safe Mode */
if (ice_is_safe_mode(vsi->back)) {
dev_err(ice_pf_to_dev(vsi->back), "Device is in Safe Mode - not enabling advanced netdev features\n");
return ret;
}
/* Do not change setting during reset */
if (ice_is_reset_in_progress(pf->state)) {
dev_err(ice_pf_to_dev(vsi->back), "Device is resetting, changing advanced netdev features temporarily unavailable.\n");
return -EBUSY;
}
/* Multiple features can be changed in one call so keep features in
* separate if/else statements to guarantee each feature is checked
*/
if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
ret = ice_vsi_manage_rss_lut(vsi, true);
else if (!(features & NETIF_F_RXHASH) &&
netdev->features & NETIF_F_RXHASH)
ret = ice_vsi_manage_rss_lut(vsi, false);
if ((features & NETIF_F_HW_VLAN_CTAG_RX) &&
!(netdev->features & NETIF_F_HW_VLAN_CTAG_RX))
ret = ice_vsi_manage_vlan_stripping(vsi, true);
else if (!(features & NETIF_F_HW_VLAN_CTAG_RX) &&
(netdev->features & NETIF_F_HW_VLAN_CTAG_RX))
ret = ice_vsi_manage_vlan_stripping(vsi, false);
if ((features & NETIF_F_HW_VLAN_CTAG_TX) &&
!(netdev->features & NETIF_F_HW_VLAN_CTAG_TX))
ret = ice_vsi_manage_vlan_insertion(vsi);
else if (!(features & NETIF_F_HW_VLAN_CTAG_TX) &&
(netdev->features & NETIF_F_HW_VLAN_CTAG_TX))
ret = ice_vsi_manage_vlan_insertion(vsi);
if ((features & NETIF_F_HW_VLAN_CTAG_FILTER) &&
!(netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER))
ret = ice_cfg_vlan_pruning(vsi, true, false);
else if (!(features & NETIF_F_HW_VLAN_CTAG_FILTER) &&
(netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER))
ret = ice_cfg_vlan_pruning(vsi, false, false);
if ((features & NETIF_F_NTUPLE) &&
!(netdev->features & NETIF_F_NTUPLE)) {
ice_vsi_manage_fdir(vsi, true);
ice_init_arfs(vsi);
} else if (!(features & NETIF_F_NTUPLE) &&
(netdev->features & NETIF_F_NTUPLE)) {
ice_vsi_manage_fdir(vsi, false);
ice_clear_arfs(vsi);
}
return ret;
}
/**
* ice_vsi_vlan_setup - Setup VLAN offload properties on a VSI
* @vsi: VSI to setup VLAN properties for
*/
static int ice_vsi_vlan_setup(struct ice_vsi *vsi)
{
int ret = 0;
if (vsi->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
ret = ice_vsi_manage_vlan_stripping(vsi, true);
if (vsi->netdev->features & NETIF_F_HW_VLAN_CTAG_TX)
ret = ice_vsi_manage_vlan_insertion(vsi);
return ret;
}
/**
* ice_vsi_cfg - Setup the VSI
* @vsi: the VSI being configured
*
* Return 0 on success and negative value on error
*/
int ice_vsi_cfg(struct ice_vsi *vsi)
{
int err;
if (vsi->netdev && vsi->type == ICE_VSI_PF) {
ice_set_rx_mode(vsi->netdev);
err = ice_vsi_vlan_setup(vsi);
if (err)
return err;
}
ice_vsi_cfg_dcb_rings(vsi);
err = ice_vsi_cfg_lan_txqs(vsi);
if (!err && ice_is_xdp_ena_vsi(vsi))
err = ice_vsi_cfg_xdp_txqs(vsi);
if (!err)
err = ice_vsi_cfg_rxqs(vsi);
return err;
}
/**
* ice_napi_enable_all - Enable NAPI for all q_vectors in the VSI
* @vsi: the VSI being configured
*/
static void ice_napi_enable_all(struct ice_vsi *vsi)
{
int q_idx;
if (!vsi->netdev)
return;
ice_for_each_q_vector(vsi, q_idx) {
struct ice_q_vector *q_vector = vsi->q_vectors[q_idx];
if (q_vector->rx.ring || q_vector->tx.ring)
napi_enable(&q_vector->napi);
}
}
/**
* ice_up_complete - Finish the last steps of bringing up a connection
* @vsi: The VSI being configured
*
* Return 0 on success and negative value on error
*/
static int ice_up_complete(struct ice_vsi *vsi)
{
struct ice_pf *pf = vsi->back;
int err;
ice_vsi_cfg_msix(vsi);
/* Enable only Rx rings, Tx rings were enabled by the FW when the
* Tx queue group list was configured and the context bits were
* programmed using ice_vsi_cfg_txqs
*/
err = ice_vsi_start_all_rx_rings(vsi);
if (err)
return err;
clear_bit(__ICE_DOWN, vsi->state);
ice_napi_enable_all(vsi);
ice_vsi_ena_irq(vsi);
if (vsi->port_info &&
(vsi->port_info->phy.link_info.link_info & ICE_AQ_LINK_UP) &&
vsi->netdev && vsi->type == ICE_VSI_PF) {
ice_print_link_msg(vsi, true);
netif_tx_start_all_queues(vsi->netdev);
netif_carrier_on(vsi->netdev);
}
/* Perform an initial read of the statistics registers now to
* set the baseline so counters are ready when interface is up
*/
ice_update_eth_stats(vsi);
if (vsi->type == ICE_VSI_PF)
ice_service_task_schedule(pf);
return 0;
}
/**
* ice_up - Bring the connection back up after being down
* @vsi: VSI being configured
*/
int ice_up(struct ice_vsi *vsi)
{
int err;
err = ice_vsi_cfg(vsi);
if (!err)
err = ice_up_complete(vsi);
return err;
}
/**
* ice_fetch_u64_stats_per_ring - get packets and bytes stats per ring
* @ring: Tx or Rx ring to read stats from
* @pkts: packets stats counter
* @bytes: bytes stats counter
*
* This function fetches stats from the ring considering the atomic operations
* that needs to be performed to read u64 values in 32 bit machine.
*/
static void
ice_fetch_u64_stats_per_ring(struct ice_ring *ring, u64 *pkts, u64 *bytes)
{
unsigned int start;
*pkts = 0;
*bytes = 0;
if (!ring)
return;
do {
start = u64_stats_fetch_begin_irq(&ring->syncp);
*pkts = ring->stats.pkts;
*bytes = ring->stats.bytes;
} while (u64_stats_fetch_retry_irq(&ring->syncp, start));
}
/**
* ice_update_vsi_tx_ring_stats - Update VSI Tx ring stats counters
* @vsi: the VSI to be updated
* @rings: rings to work on
* @count: number of rings
*/
static void
ice_update_vsi_tx_ring_stats(struct ice_vsi *vsi, struct ice_ring **rings,
u16 count)
{
struct rtnl_link_stats64 *vsi_stats = &vsi->net_stats;
u16 i;
for (i = 0; i < count; i++) {
struct ice_ring *ring;
u64 pkts, bytes;
ring = READ_ONCE(rings[i]);
ice_fetch_u64_stats_per_ring(ring, &pkts, &bytes);
vsi_stats->tx_packets += pkts;
vsi_stats->tx_bytes += bytes;
vsi->tx_restart += ring->tx_stats.restart_q;
vsi->tx_busy += ring->tx_stats.tx_busy;
vsi->tx_linearize += ring->tx_stats.tx_linearize;
}
}
/**
* ice_update_vsi_ring_stats - Update VSI stats counters
* @vsi: the VSI to be updated
*/
static void ice_update_vsi_ring_stats(struct ice_vsi *vsi)
{
struct rtnl_link_stats64 *vsi_stats = &vsi->net_stats;
struct ice_ring *ring;
u64 pkts, bytes;
int i;
/* reset netdev stats */
vsi_stats->tx_packets = 0;
vsi_stats->tx_bytes = 0;
vsi_stats->rx_packets = 0;
vsi_stats->rx_bytes = 0;
/* reset non-netdev (extended) stats */
vsi->tx_restart = 0;
vsi->tx_busy = 0;
vsi->tx_linearize = 0;
vsi->rx_buf_failed = 0;
vsi->rx_page_failed = 0;
vsi->rx_gro_dropped = 0;
rcu_read_lock();
/* update Tx rings counters */
ice_update_vsi_tx_ring_stats(vsi, vsi->tx_rings, vsi->num_txq);
/* update Rx rings counters */
ice_for_each_rxq(vsi, i) {
ring = READ_ONCE(vsi->rx_rings[i]);
ice_fetch_u64_stats_per_ring(ring, &pkts, &bytes);
vsi_stats->rx_packets += pkts;
vsi_stats->rx_bytes += bytes;
vsi->rx_buf_failed += ring->rx_stats.alloc_buf_failed;
vsi->rx_page_failed += ring->rx_stats.alloc_page_failed;
vsi->rx_gro_dropped += ring->rx_stats.gro_dropped;
}
/* update XDP Tx rings counters */
if (ice_is_xdp_ena_vsi(vsi))
ice_update_vsi_tx_ring_stats(vsi, vsi->xdp_rings,
vsi->num_xdp_txq);
rcu_read_unlock();
}
/**
* ice_update_vsi_stats - Update VSI stats counters
* @vsi: the VSI to be updated
*/
void ice_update_vsi_stats(struct ice_vsi *vsi)
{
struct rtnl_link_stats64 *cur_ns = &vsi->net_stats;
struct ice_eth_stats *cur_es = &vsi->eth_stats;
struct ice_pf *pf = vsi->back;
if (test_bit(__ICE_DOWN, vsi->state) ||
test_bit(__ICE_CFG_BUSY, pf->state))
return;
/* get stats as recorded by Tx/Rx rings */
ice_update_vsi_ring_stats(vsi);
/* get VSI stats as recorded by the hardware */
ice_update_eth_stats(vsi);
cur_ns->tx_errors = cur_es->tx_errors;
cur_ns->rx_dropped = cur_es->rx_discards + vsi->rx_gro_dropped;
cur_ns->tx_dropped = cur_es->tx_discards;
cur_ns->multicast = cur_es->rx_multicast;
/* update some more netdev stats if this is main VSI */
if (vsi->type == ICE_VSI_PF) {
cur_ns->rx_crc_errors = pf->stats.crc_errors;
cur_ns->rx_errors = pf->stats.crc_errors +
pf->stats.illegal_bytes +
pf->stats.rx_len_errors +
pf->stats.rx_undersize +
pf->hw_csum_rx_error +
pf->stats.rx_jabber +
pf->stats.rx_fragments +
pf->stats.rx_oversize;
cur_ns->rx_length_errors = pf->stats.rx_len_errors;
/* record drops from the port level */
cur_ns->rx_missed_errors = pf->stats.eth.rx_discards;
}
}
/**
* ice_update_pf_stats - Update PF port stats counters
* @pf: PF whose stats needs to be updated
*/
void ice_update_pf_stats(struct ice_pf *pf)
{
struct ice_hw_port_stats *prev_ps, *cur_ps;
struct ice_hw *hw = &pf->hw;
u16 fd_ctr_base;
u8 port;
port = hw->port_info->lport;
prev_ps = &pf->stats_prev;
cur_ps = &pf->stats;
ice_stat_update40(hw, GLPRT_GORCL(port), pf->stat_prev_loaded,
&prev_ps->eth.rx_bytes,
&cur_ps->eth.rx_bytes);
ice_stat_update40(hw, GLPRT_UPRCL(port), pf->stat_prev_loaded,
&prev_ps->eth.rx_unicast,
&cur_ps->eth.rx_unicast);
ice_stat_update40(hw, GLPRT_MPRCL(port), pf->stat_prev_loaded,
&prev_ps->eth.rx_multicast,
&cur_ps->eth.rx_multicast);
ice_stat_update40(hw, GLPRT_BPRCL(port), pf->stat_prev_loaded,
&prev_ps->eth.rx_broadcast,
&cur_ps->eth.rx_broadcast);
ice_stat_update32(hw, PRTRPB_RDPC, pf->stat_prev_loaded,
&prev_ps->eth.rx_discards,
&cur_ps->eth.rx_discards);
ice_stat_update40(hw, GLPRT_GOTCL(port), pf->stat_prev_loaded,
&prev_ps->eth.tx_bytes,
&cur_ps->eth.tx_bytes);
ice_stat_update40(hw, GLPRT_UPTCL(port), pf->stat_prev_loaded,
&prev_ps->eth.tx_unicast,
&cur_ps->eth.tx_unicast);
ice_stat_update40(hw, GLPRT_MPTCL(port), pf->stat_prev_loaded,
&prev_ps->eth.tx_multicast,
&cur_ps->eth.tx_multicast);
ice_stat_update40(hw, GLPRT_BPTCL(port), pf->stat_prev_loaded,
&prev_ps->eth.tx_broadcast,
&cur_ps->eth.tx_broadcast);
ice_stat_update32(hw, GLPRT_TDOLD(port), pf->stat_prev_loaded,
&prev_ps->tx_dropped_link_down,
&cur_ps->tx_dropped_link_down);
ice_stat_update40(hw, GLPRT_PRC64L(port), pf->stat_prev_loaded,
&prev_ps->rx_size_64, &cur_ps->rx_size_64);
ice_stat_update40(hw, GLPRT_PRC127L(port), pf->stat_prev_loaded,
&prev_ps->rx_size_127, &cur_ps->rx_size_127);
ice_stat_update40(hw, GLPRT_PRC255L(port), pf->stat_prev_loaded,
&prev_ps->rx_size_255, &cur_ps->rx_size_255);
ice_stat_update40(hw, GLPRT_PRC511L(port), pf->stat_prev_loaded,
&prev_ps->rx_size_511, &cur_ps->rx_size_511);
ice_stat_update40(hw, GLPRT_PRC1023L(port), pf->stat_prev_loaded,
&prev_ps->rx_size_1023, &cur_ps->rx_size_1023);
ice_stat_update40(hw, GLPRT_PRC1522L(port), pf->stat_prev_loaded,
&prev_ps->rx_size_1522, &cur_ps->rx_size_1522);
ice_stat_update40(hw, GLPRT_PRC9522L(port), pf->stat_prev_loaded,
&prev_ps->rx_size_big, &cur_ps->rx_size_big);
ice_stat_update40(hw, GLPRT_PTC64L(port), pf->stat_prev_loaded,
&prev_ps->tx_size_64, &cur_ps->tx_size_64);
ice_stat_update40(hw, GLPRT_PTC127L(port), pf->stat_prev_loaded,
&prev_ps->tx_size_127, &cur_ps->tx_size_127);
ice_stat_update40(hw, GLPRT_PTC255L(port), pf->stat_prev_loaded,
&prev_ps->tx_size_255, &cur_ps->tx_size_255);
ice_stat_update40(hw, GLPRT_PTC511L(port), pf->stat_prev_loaded,
&prev_ps->tx_size_511, &cur_ps->tx_size_511);
ice_stat_update40(hw, GLPRT_PTC1023L(port), pf->stat_prev_loaded,
&prev_ps->tx_size_1023, &cur_ps->tx_size_1023);
ice_stat_update40(hw, GLPRT_PTC1522L(port), pf->stat_prev_loaded,
&prev_ps->tx_size_1522, &cur_ps->tx_size_1522);
ice_stat_update40(hw, GLPRT_PTC9522L(port), pf->stat_prev_loaded,
&prev_ps->tx_size_big, &cur_ps->tx_size_big);
fd_ctr_base = hw->fd_ctr_base;
ice_stat_update40(hw,
GLSTAT_FD_CNT0L(ICE_FD_SB_STAT_IDX(fd_ctr_base)),
pf->stat_prev_loaded, &prev_ps->fd_sb_match,
&cur_ps->fd_sb_match);
ice_stat_update32(hw, GLPRT_LXONRXC(port), pf->stat_prev_loaded,
&prev_ps->link_xon_rx, &cur_ps->link_xon_rx);
ice_stat_update32(hw, GLPRT_LXOFFRXC(port), pf->stat_prev_loaded,
&prev_ps->link_xoff_rx, &cur_ps->link_xoff_rx);
ice_stat_update32(hw, GLPRT_LXONTXC(port), pf->stat_prev_loaded,
&prev_ps->link_xon_tx, &cur_ps->link_xon_tx);
ice_stat_update32(hw, GLPRT_LXOFFTXC(port), pf->stat_prev_loaded,
&prev_ps->link_xoff_tx, &cur_ps->link_xoff_tx);
ice_update_dcb_stats(pf);
ice_stat_update32(hw, GLPRT_CRCERRS(port), pf->stat_prev_loaded,
&prev_ps->crc_errors, &cur_ps->crc_errors);
ice_stat_update32(hw, GLPRT_ILLERRC(port), pf->stat_prev_loaded,
&prev_ps->illegal_bytes, &cur_ps->illegal_bytes);
ice_stat_update32(hw, GLPRT_MLFC(port), pf->stat_prev_loaded,
&prev_ps->mac_local_faults,
&cur_ps->mac_local_faults);
ice_stat_update32(hw, GLPRT_MRFC(port), pf->stat_prev_loaded,
&prev_ps->mac_remote_faults,
&cur_ps->mac_remote_faults);
ice_stat_update32(hw, GLPRT_RLEC(port), pf->stat_prev_loaded,
&prev_ps->rx_len_errors, &cur_ps->rx_len_errors);
ice_stat_update32(hw, GLPRT_RUC(port), pf->stat_prev_loaded,
&prev_ps->rx_undersize, &cur_ps->rx_undersize);
ice_stat_update32(hw, GLPRT_RFC(port), pf->stat_prev_loaded,
&prev_ps->rx_fragments, &cur_ps->rx_fragments);
ice_stat_update32(hw, GLPRT_ROC(port), pf->stat_prev_loaded,
&prev_ps->rx_oversize, &cur_ps->rx_oversize);
ice_stat_update32(hw, GLPRT_RJC(port), pf->stat_prev_loaded,
&prev_ps->rx_jabber, &cur_ps->rx_jabber);
cur_ps->fd_sb_status = test_bit(ICE_FLAG_FD_ENA, pf->flags) ? 1 : 0;
pf->stat_prev_loaded = true;
}
/**
* ice_get_stats64 - get statistics for network device structure
* @netdev: network interface device structure
* @stats: main device statistics structure
*/
static
void ice_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct rtnl_link_stats64 *vsi_stats;
struct ice_vsi *vsi = np->vsi;
vsi_stats = &vsi->net_stats;
if (!vsi->num_txq || !vsi->num_rxq)
return;
/* netdev packet/byte stats come from ring counter. These are obtained
* by summing up ring counters (done by ice_update_vsi_ring_stats).
* But, only call the update routine and read the registers if VSI is
* not down.
*/
if (!test_bit(__ICE_DOWN, vsi->state))
ice_update_vsi_ring_stats(vsi);
stats->tx_packets = vsi_stats->tx_packets;
stats->tx_bytes = vsi_stats->tx_bytes;
stats->rx_packets = vsi_stats->rx_packets;
stats->rx_bytes = vsi_stats->rx_bytes;
/* The rest of the stats can be read from the hardware but instead we
* just return values that the watchdog task has already obtained from
* the hardware.
*/
stats->multicast = vsi_stats->multicast;
stats->tx_errors = vsi_stats->tx_errors;
stats->tx_dropped = vsi_stats->tx_dropped;
stats->rx_errors = vsi_stats->rx_errors;
stats->rx_dropped = vsi_stats->rx_dropped;
stats->rx_crc_errors = vsi_stats->rx_crc_errors;
stats->rx_length_errors = vsi_stats->rx_length_errors;
}
/**
* ice_napi_disable_all - Disable NAPI for all q_vectors in the VSI
* @vsi: VSI having NAPI disabled
*/
static void ice_napi_disable_all(struct ice_vsi *vsi)
{
int q_idx;
if (!vsi->netdev)
return;
ice_for_each_q_vector(vsi, q_idx) {
struct ice_q_vector *q_vector = vsi->q_vectors[q_idx];
if (q_vector->rx.ring || q_vector->tx.ring)
napi_disable(&q_vector->napi);
}
}
/**
* ice_down - Shutdown the connection
* @vsi: The VSI being stopped
*/
int ice_down(struct ice_vsi *vsi)
{
int i, tx_err, rx_err, link_err = 0;
/* Caller of this function is expected to set the
* vsi->state __ICE_DOWN bit
*/
if (vsi->netdev) {
netif_carrier_off(vsi->netdev);
netif_tx_disable(vsi->netdev);
}
ice_vsi_dis_irq(vsi);
tx_err = ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, 0);
if (tx_err)
netdev_err(vsi->netdev, "Failed stop Tx rings, VSI %d error %d\n",
vsi->vsi_num, tx_err);
if (!tx_err && ice_is_xdp_ena_vsi(vsi)) {
tx_err = ice_vsi_stop_xdp_tx_rings(vsi);
if (tx_err)
netdev_err(vsi->netdev, "Failed stop XDP rings, VSI %d error %d\n",
vsi->vsi_num, tx_err);
}
rx_err = ice_vsi_stop_all_rx_rings(vsi);
if (rx_err)
netdev_err(vsi->netdev, "Failed stop Rx rings, VSI %d error %d\n",
vsi->vsi_num, rx_err);
ice_napi_disable_all(vsi);
if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags)) {
link_err = ice_force_phys_link_state(vsi, false);
if (link_err)
netdev_err(vsi->netdev, "Failed to set physical link down, VSI %d error %d\n",
vsi->vsi_num, link_err);
}
ice_for_each_txq(vsi, i)
ice_clean_tx_ring(vsi->tx_rings[i]);
ice_for_each_rxq(vsi, i)
ice_clean_rx_ring(vsi->rx_rings[i]);
if (tx_err || rx_err || link_err) {
netdev_err(vsi->netdev, "Failed to close VSI 0x%04X on switch 0x%04X\n",
vsi->vsi_num, vsi->vsw->sw_id);
return -EIO;
}
return 0;
}
/**
* ice_vsi_setup_tx_rings - Allocate VSI Tx queue resources
* @vsi: VSI having resources allocated
*
* Return 0 on success, negative on failure
*/
int ice_vsi_setup_tx_rings(struct ice_vsi *vsi)
{
int i, err = 0;
if (!vsi->num_txq) {
dev_err(ice_pf_to_dev(vsi->back), "VSI %d has 0 Tx queues\n",
vsi->vsi_num);
return -EINVAL;
}
ice_for_each_txq(vsi, i) {
struct ice_ring *ring = vsi->tx_rings[i];
if (!ring)
return -EINVAL;
ring->netdev = vsi->netdev;
err = ice_setup_tx_ring(ring);
if (err)
break;
}
return err;
}
/**
* ice_vsi_setup_rx_rings - Allocate VSI Rx queue resources
* @vsi: VSI having resources allocated
*
* Return 0 on success, negative on failure
*/
int ice_vsi_setup_rx_rings(struct ice_vsi *vsi)
{
int i, err = 0;
if (!vsi->num_rxq) {
dev_err(ice_pf_to_dev(vsi->back), "VSI %d has 0 Rx queues\n",
vsi->vsi_num);
return -EINVAL;
}
ice_for_each_rxq(vsi, i) {
struct ice_ring *ring = vsi->rx_rings[i];
if (!ring)
return -EINVAL;
ring->netdev = vsi->netdev;
err = ice_setup_rx_ring(ring);
if (err)
break;
}
return err;
}
/**
* ice_vsi_open_ctrl - open control VSI for use
* @vsi: the VSI to open
*
* Initialization of the Control VSI
*
* Returns 0 on success, negative value on error
*/
int ice_vsi_open_ctrl(struct ice_vsi *vsi)
{
char int_name[ICE_INT_NAME_STR_LEN];
struct ice_pf *pf = vsi->back;
struct device *dev;
int err;
dev = ice_pf_to_dev(pf);
/* allocate descriptors */
err = ice_vsi_setup_tx_rings(vsi);
if (err)
goto err_setup_tx;
err = ice_vsi_setup_rx_rings(vsi);
if (err)
goto err_setup_rx;
err = ice_vsi_cfg(vsi);
if (err)
goto err_setup_rx;
snprintf(int_name, sizeof(int_name) - 1, "%s-%s:ctrl",
dev_driver_string(dev), dev_name(dev));
err = ice_vsi_req_irq_msix(vsi, int_name);
if (err)
goto err_setup_rx;
ice_vsi_cfg_msix(vsi);
err = ice_vsi_start_all_rx_rings(vsi);
if (err)
goto err_up_complete;
clear_bit(__ICE_DOWN, vsi->state);
ice_vsi_ena_irq(vsi);
return 0;
err_up_complete:
ice_down(vsi);
err_setup_rx:
ice_vsi_free_rx_rings(vsi);
err_setup_tx:
ice_vsi_free_tx_rings(vsi);
return err;
}
/**
* ice_vsi_open - Called when a network interface is made active
* @vsi: the VSI to open
*
* Initialization of the VSI
*
* Returns 0 on success, negative value on error
*/
static int ice_vsi_open(struct ice_vsi *vsi)
{
char int_name[ICE_INT_NAME_STR_LEN];
struct ice_pf *pf = vsi->back;
int err;
/* allocate descriptors */
err = ice_vsi_setup_tx_rings(vsi);
if (err)
goto err_setup_tx;
err = ice_vsi_setup_rx_rings(vsi);
if (err)
goto err_setup_rx;
err = ice_vsi_cfg(vsi);
if (err)
goto err_setup_rx;
snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
dev_driver_string(ice_pf_to_dev(pf)), vsi->netdev->name);
err = ice_vsi_req_irq_msix(vsi, int_name);
if (err)
goto err_setup_rx;
/* Notify the stack of the actual queue counts. */
err = netif_set_real_num_tx_queues(vsi->netdev, vsi->num_txq);
if (err)
goto err_set_qs;
err = netif_set_real_num_rx_queues(vsi->netdev, vsi->num_rxq);
if (err)
goto err_set_qs;
err = ice_up_complete(vsi);
if (err)
goto err_up_complete;
return 0;
err_up_complete:
ice_down(vsi);
err_set_qs:
ice_vsi_free_irq(vsi);
err_setup_rx:
ice_vsi_free_rx_rings(vsi);
err_setup_tx:
ice_vsi_free_tx_rings(vsi);
return err;
}
/**
* ice_vsi_release_all - Delete all VSIs
* @pf: PF from which all VSIs are being removed
*/
static void ice_vsi_release_all(struct ice_pf *pf)
{
int err, i;
if (!pf->vsi)
return;
ice_for_each_vsi(pf, i) {
if (!pf->vsi[i])
continue;
err = ice_vsi_release(pf->vsi[i]);
if (err)
dev_dbg(ice_pf_to_dev(pf), "Failed to release pf->vsi[%d], err %d, vsi_num = %d\n",
i, err, pf->vsi[i]->vsi_num);
}
}
/**
* ice_vsi_rebuild_by_type - Rebuild VSI of a given type
* @pf: pointer to the PF instance
* @type: VSI type to rebuild
*
* Iterates through the pf->vsi array and rebuilds VSIs of the requested type
*/
static int ice_vsi_rebuild_by_type(struct ice_pf *pf, enum ice_vsi_type type)
{
struct device *dev = ice_pf_to_dev(pf);
enum ice_status status;
int i, err;
ice_for_each_vsi(pf, i) {
struct ice_vsi *vsi = pf->vsi[i];
if (!vsi || vsi->type != type)
continue;
/* rebuild the VSI */
err = ice_vsi_rebuild(vsi, true);
if (err) {
dev_err(dev, "rebuild VSI failed, err %d, VSI index %d, type %s\n",
err, vsi->idx, ice_vsi_type_str(type));
return err;
}
/* replay filters for the VSI */
status = ice_replay_vsi(&pf->hw, vsi->idx);
if (status) {
dev_err(dev, "replay VSI failed, status %s, VSI index %d, type %s\n",
ice_stat_str(status), vsi->idx,
ice_vsi_type_str(type));
return -EIO;
}
/* Re-map HW VSI number, using VSI handle that has been
* previously validated in ice_replay_vsi() call above
*/
vsi->vsi_num = ice_get_hw_vsi_num(&pf->hw, vsi->idx);
/* enable the VSI */
err = ice_ena_vsi(vsi, false);
if (err) {
dev_err(dev, "enable VSI failed, err %d, VSI index %d, type %s\n",
err, vsi->idx, ice_vsi_type_str(type));
return err;
}
dev_info(dev, "VSI rebuilt. VSI index %d, type %s\n", vsi->idx,
ice_vsi_type_str(type));
}
return 0;
}
/**
* ice_update_pf_netdev_link - Update PF netdev link status
* @pf: pointer to the PF instance
*/
static void ice_update_pf_netdev_link(struct ice_pf *pf)
{
bool link_up;
int i;
ice_for_each_vsi(pf, i) {
struct ice_vsi *vsi = pf->vsi[i];
if (!vsi || vsi->type != ICE_VSI_PF)
return;
ice_get_link_status(pf->vsi[i]->port_info, &link_up);
if (link_up) {
netif_carrier_on(pf->vsi[i]->netdev);
netif_tx_wake_all_queues(pf->vsi[i]->netdev);
} else {
netif_carrier_off(pf->vsi[i]->netdev);
netif_tx_stop_all_queues(pf->vsi[i]->netdev);
}
}
}
/**
* ice_rebuild - rebuild after reset
* @pf: PF to rebuild
* @reset_type: type of reset
*
* Do not rebuild VF VSI in this flow because that is already handled via
* ice_reset_all_vfs(). This is because requirements for resetting a VF after a
* PFR/CORER/GLOBER/etc. are different than the normal flow. Also, we don't want
* to reset/rebuild all the VF VSI twice.
*/
static void ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type)
{
struct device *dev = ice_pf_to_dev(pf);
struct ice_hw *hw = &pf->hw;
enum ice_status ret;
int err;
if (test_bit(__ICE_DOWN, pf->state))
goto clear_recovery;
dev_dbg(dev, "rebuilding PF after reset_type=%d\n", reset_type);
ret = ice_init_all_ctrlq(hw);
if (ret) {
dev_err(dev, "control queues init failed %s\n",
ice_stat_str(ret));
goto err_init_ctrlq;
}
/* if DDP was previously loaded successfully */
if (!ice_is_safe_mode(pf)) {
/* reload the SW DB of filter tables */
if (reset_type == ICE_RESET_PFR)
ice_fill_blk_tbls(hw);
else
/* Reload DDP Package after CORER/GLOBR reset */
ice_load_pkg(NULL, pf);
}
ret = ice_clear_pf_cfg(hw);
if (ret) {
dev_err(dev, "clear PF configuration failed %s\n",
ice_stat_str(ret));
goto err_init_ctrlq;
}
if (pf->first_sw->dflt_vsi_ena)
dev_info(dev, "Clearing default VSI, re-enable after reset completes\n");
/* clear the default VSI configuration if it exists */
pf->first_sw->dflt_vsi = NULL;
pf->first_sw->dflt_vsi_ena = false;
ice_clear_pxe_mode(hw);
ret = ice_get_caps(hw);
if (ret) {
dev_err(dev, "ice_get_caps failed %s\n", ice_stat_str(ret));
goto err_init_ctrlq;
}
ret = ice_aq_set_mac_cfg(hw, ICE_AQ_SET_MAC_FRAME_SIZE_MAX, NULL);
if (ret) {
dev_err(dev, "set_mac_cfg failed %s\n", ice_stat_str(ret));
goto err_init_ctrlq;
}
err = ice_sched_init_port(hw->port_info);
if (err)
goto err_sched_init_port;
/* start misc vector */
err = ice_req_irq_msix_misc(pf);
if (err) {
dev_err(dev, "misc vector setup failed: %d\n", err);
goto err_sched_init_port;
}
if (test_bit(ICE_FLAG_FD_ENA, pf->flags)) {
wr32(hw, PFQF_FD_ENA, PFQF_FD_ENA_FD_ENA_M);
if (!rd32(hw, PFQF_FD_SIZE)) {
u16 unused, guar, b_effort;
guar = hw->func_caps.fd_fltr_guar;
b_effort = hw->func_caps.fd_fltr_best_effort;
/* force guaranteed filter pool for PF */
ice_alloc_fd_guar_item(hw, &unused, guar);
/* force shared filter pool for PF */
ice_alloc_fd_shrd_item(hw, &unused, b_effort);
}
}
if (test_bit(ICE_FLAG_DCB_ENA, pf->flags))
ice_dcb_rebuild(pf);
/* rebuild PF VSI */
err = ice_vsi_rebuild_by_type(pf, ICE_VSI_PF);
if (err) {
dev_err(dev, "PF VSI rebuild failed: %d\n", err);
goto err_vsi_rebuild;
}
/* If Flow Director is active */
if (test_bit(ICE_FLAG_FD_ENA, pf->flags)) {
err = ice_vsi_rebuild_by_type(pf, ICE_VSI_CTRL);
if (err) {
dev_err(dev, "control VSI rebuild failed: %d\n", err);
goto err_vsi_rebuild;
}
/* replay HW Flow Director recipes */
if (hw->fdir_prof)
ice_fdir_replay_flows(hw);
/* replay Flow Director filters */
ice_fdir_replay_fltrs(pf);
ice_rebuild_arfs(pf);
}
ice_update_pf_netdev_link(pf);
/* tell the firmware we are up */
ret = ice_send_version(pf);
if (ret) {
dev_err(dev, "Rebuild failed due to error sending driver version: %s\n",
ice_stat_str(ret));
goto err_vsi_rebuild;
}
ice_replay_post(hw);
/* if we get here, reset flow is successful */
clear_bit(__ICE_RESET_FAILED, pf->state);
return;
err_vsi_rebuild:
err_sched_init_port:
ice_sched_cleanup_all(hw);
err_init_ctrlq:
ice_shutdown_all_ctrlq(hw);
set_bit(__ICE_RESET_FAILED, pf->state);
clear_recovery:
/* set this bit in PF state to control service task scheduling */
set_bit(__ICE_NEEDS_RESTART, pf->state);
dev_err(dev, "Rebuild failed, unload and reload driver\n");
}
/**
* ice_max_xdp_frame_size - returns the maximum allowed frame size for XDP
* @vsi: Pointer to VSI structure
*/
static int ice_max_xdp_frame_size(struct ice_vsi *vsi)
{
if (PAGE_SIZE >= 8192 || test_bit(ICE_FLAG_LEGACY_RX, vsi->back->flags))
return ICE_RXBUF_2048 - XDP_PACKET_HEADROOM;
else
return ICE_RXBUF_3072;
}
/**
* ice_change_mtu - NDO callback to change the MTU
* @netdev: network interface device structure
* @new_mtu: new value for maximum frame size
*
* Returns 0 on success, negative on failure
*/
static int ice_change_mtu(struct net_device *netdev, int new_mtu)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
u8 count = 0;
if (new_mtu == (int)netdev->mtu) {
netdev_warn(netdev, "MTU is already %u\n", netdev->mtu);
return 0;
}
if (ice_is_xdp_ena_vsi(vsi)) {
int frame_size = ice_max_xdp_frame_size(vsi);
if (new_mtu + ICE_ETH_PKT_HDR_PAD > frame_size) {
netdev_err(netdev, "max MTU for XDP usage is %d\n",
frame_size - ICE_ETH_PKT_HDR_PAD);
return -EINVAL;
}
}
if (new_mtu < (int)netdev->min_mtu) {
netdev_err(netdev, "new MTU invalid. min_mtu is %d\n",
netdev->min_mtu);
return -EINVAL;
} else if (new_mtu > (int)netdev->max_mtu) {
netdev_err(netdev, "new MTU invalid. max_mtu is %d\n",
netdev->min_mtu);
return -EINVAL;
}
/* if a reset is in progress, wait for some time for it to complete */
do {
if (ice_is_reset_in_progress(pf->state)) {
count++;
usleep_range(1000, 2000);
} else {
break;
}
} while (count < 100);
if (count == 100) {
netdev_err(netdev, "can't change MTU. Device is busy\n");
return -EBUSY;
}
netdev->mtu = (unsigned int)new_mtu;
/* if VSI is up, bring it down and then back up */
if (!test_and_set_bit(__ICE_DOWN, vsi->state)) {
int err;
err = ice_down(vsi);
if (err) {
netdev_err(netdev, "change MTU if_up err %d\n", err);
return err;
}
err = ice_up(vsi);
if (err) {
netdev_err(netdev, "change MTU if_up err %d\n", err);
return err;
}
}
netdev_dbg(netdev, "changed MTU to %d\n", new_mtu);
return 0;
}
/**
* ice_aq_str - convert AQ err code to a string
* @aq_err: the AQ error code to convert
*/
const char *ice_aq_str(enum ice_aq_err aq_err)
{
switch (aq_err) {
case ICE_AQ_RC_OK:
return "OK";
case ICE_AQ_RC_EPERM:
return "ICE_AQ_RC_EPERM";
case ICE_AQ_RC_ENOENT:
return "ICE_AQ_RC_ENOENT";
case ICE_AQ_RC_ENOMEM:
return "ICE_AQ_RC_ENOMEM";
case ICE_AQ_RC_EBUSY:
return "ICE_AQ_RC_EBUSY";
case ICE_AQ_RC_EEXIST:
return "ICE_AQ_RC_EEXIST";
case ICE_AQ_RC_EINVAL:
return "ICE_AQ_RC_EINVAL";
case ICE_AQ_RC_ENOSPC:
return "ICE_AQ_RC_ENOSPC";
case ICE_AQ_RC_ENOSYS:
return "ICE_AQ_RC_ENOSYS";
case ICE_AQ_RC_EMODE:
return "ICE_AQ_RC_EMODE";
case ICE_AQ_RC_ENOSEC:
return "ICE_AQ_RC_ENOSEC";
case ICE_AQ_RC_EBADSIG:
return "ICE_AQ_RC_EBADSIG";
case ICE_AQ_RC_ESVN:
return "ICE_AQ_RC_ESVN";
case ICE_AQ_RC_EBADMAN:
return "ICE_AQ_RC_EBADMAN";
case ICE_AQ_RC_EBADBUF:
return "ICE_AQ_RC_EBADBUF";
}
return "ICE_AQ_RC_UNKNOWN";
}
/**
* ice_stat_str - convert status err code to a string
* @stat_err: the status error code to convert
*/
const char *ice_stat_str(enum ice_status stat_err)
{
switch (stat_err) {
case ICE_SUCCESS:
return "OK";
case ICE_ERR_PARAM:
return "ICE_ERR_PARAM";
case ICE_ERR_NOT_IMPL:
return "ICE_ERR_NOT_IMPL";
case ICE_ERR_NOT_READY:
return "ICE_ERR_NOT_READY";
case ICE_ERR_NOT_SUPPORTED:
return "ICE_ERR_NOT_SUPPORTED";
case ICE_ERR_BAD_PTR:
return "ICE_ERR_BAD_PTR";
case ICE_ERR_INVAL_SIZE:
return "ICE_ERR_INVAL_SIZE";
case ICE_ERR_DEVICE_NOT_SUPPORTED:
return "ICE_ERR_DEVICE_NOT_SUPPORTED";
case ICE_ERR_RESET_FAILED:
return "ICE_ERR_RESET_FAILED";
case ICE_ERR_FW_API_VER:
return "ICE_ERR_FW_API_VER";
case ICE_ERR_NO_MEMORY:
return "ICE_ERR_NO_MEMORY";
case ICE_ERR_CFG:
return "ICE_ERR_CFG";
case ICE_ERR_OUT_OF_RANGE:
return "ICE_ERR_OUT_OF_RANGE";
case ICE_ERR_ALREADY_EXISTS:
return "ICE_ERR_ALREADY_EXISTS";
case ICE_ERR_NVM_CHECKSUM:
return "ICE_ERR_NVM_CHECKSUM";
case ICE_ERR_BUF_TOO_SHORT:
return "ICE_ERR_BUF_TOO_SHORT";
case ICE_ERR_NVM_BLANK_MODE:
return "ICE_ERR_NVM_BLANK_MODE";
case ICE_ERR_IN_USE:
return "ICE_ERR_IN_USE";
case ICE_ERR_MAX_LIMIT:
return "ICE_ERR_MAX_LIMIT";
case ICE_ERR_RESET_ONGOING:
return "ICE_ERR_RESET_ONGOING";
case ICE_ERR_HW_TABLE:
return "ICE_ERR_HW_TABLE";
case ICE_ERR_DOES_NOT_EXIST:
return "ICE_ERR_DOES_NOT_EXIST";
case ICE_ERR_FW_DDP_MISMATCH:
return "ICE_ERR_FW_DDP_MISMATCH";
case ICE_ERR_AQ_ERROR:
return "ICE_ERR_AQ_ERROR";
case ICE_ERR_AQ_TIMEOUT:
return "ICE_ERR_AQ_TIMEOUT";
case ICE_ERR_AQ_FULL:
return "ICE_ERR_AQ_FULL";
case ICE_ERR_AQ_NO_WORK:
return "ICE_ERR_AQ_NO_WORK";
case ICE_ERR_AQ_EMPTY:
return "ICE_ERR_AQ_EMPTY";
case ICE_ERR_AQ_FW_CRITICAL:
return "ICE_ERR_AQ_FW_CRITICAL";
}
return "ICE_ERR_UNKNOWN";
}
/**
* ice_set_rss - Set RSS keys and lut
* @vsi: Pointer to VSI structure
* @seed: RSS hash seed
* @lut: Lookup table
* @lut_size: Lookup table size
*
* Returns 0 on success, negative on failure
*/
int ice_set_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
{
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
enum ice_status status;
struct device *dev;
dev = ice_pf_to_dev(pf);
if (seed) {
struct ice_aqc_get_set_rss_keys *buf =
(struct ice_aqc_get_set_rss_keys *)seed;
status = ice_aq_set_rss_key(hw, vsi->idx, buf);
if (status) {
dev_err(dev, "Cannot set RSS key, err %s aq_err %s\n",
ice_stat_str(status),
ice_aq_str(hw->adminq.sq_last_status));
return -EIO;
}
}
if (lut) {
status = ice_aq_set_rss_lut(hw, vsi->idx, vsi->rss_lut_type,
lut, lut_size);
if (status) {
dev_err(dev, "Cannot set RSS lut, err %s aq_err %s\n",
ice_stat_str(status),
ice_aq_str(hw->adminq.sq_last_status));
return -EIO;
}
}
return 0;
}
/**
* ice_get_rss - Get RSS keys and lut
* @vsi: Pointer to VSI structure
* @seed: Buffer to store the keys
* @lut: Buffer to store the lookup table entries
* @lut_size: Size of buffer to store the lookup table entries
*
* Returns 0 on success, negative on failure
*/
int ice_get_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
{
struct ice_pf *pf = vsi->back;
struct ice_hw *hw = &pf->hw;
enum ice_status status;
struct device *dev;
dev = ice_pf_to_dev(pf);
if (seed) {
struct ice_aqc_get_set_rss_keys *buf =
(struct ice_aqc_get_set_rss_keys *)seed;
status = ice_aq_get_rss_key(hw, vsi->idx, buf);
if (status) {
dev_err(dev, "Cannot get RSS key, err %s aq_err %s\n",
ice_stat_str(status),
ice_aq_str(hw->adminq.sq_last_status));
return -EIO;
}
}
if (lut) {
status = ice_aq_get_rss_lut(hw, vsi->idx, vsi->rss_lut_type,
lut, lut_size);
if (status) {
dev_err(dev, "Cannot get RSS lut, err %s aq_err %s\n",
ice_stat_str(status),
ice_aq_str(hw->adminq.sq_last_status));
return -EIO;
}
}
return 0;
}
/**
* ice_bridge_getlink - Get the hardware bridge mode
* @skb: skb buff
* @pid: process ID
* @seq: RTNL message seq
* @dev: the netdev being configured
* @filter_mask: filter mask passed in
* @nlflags: netlink flags passed in
*
* Return the bridge mode (VEB/VEPA)
*/
static int
ice_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
struct net_device *dev, u32 filter_mask, int nlflags)
{
struct ice_netdev_priv *np = netdev_priv(dev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
u16 bmode;
bmode = pf->first_sw->bridge_mode;
return ndo_dflt_bridge_getlink(skb, pid, seq, dev, bmode, 0, 0, nlflags,
filter_mask, NULL);
}
/**
* ice_vsi_update_bridge_mode - Update VSI for switching bridge mode (VEB/VEPA)
* @vsi: Pointer to VSI structure
* @bmode: Hardware bridge mode (VEB/VEPA)
*
* Returns 0 on success, negative on failure
*/
static int ice_vsi_update_bridge_mode(struct ice_vsi *vsi, u16 bmode)
{
struct ice_aqc_vsi_props *vsi_props;
struct ice_hw *hw = &vsi->back->hw;
struct ice_vsi_ctx *ctxt;
enum ice_status status;
int ret = 0;
vsi_props = &vsi->info;
ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL);
if (!ctxt)
return -ENOMEM;
ctxt->info = vsi->info;
if (bmode == BRIDGE_MODE_VEB)
/* change from VEPA to VEB mode */
ctxt->info.sw_flags |= ICE_AQ_VSI_SW_FLAG_ALLOW_LB;
else
/* change from VEB to VEPA mode */
ctxt->info.sw_flags &= ~ICE_AQ_VSI_SW_FLAG_ALLOW_LB;
ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SW_VALID);
status = ice_update_vsi(hw, vsi->idx, ctxt, NULL);
if (status) {
dev_err(ice_pf_to_dev(vsi->back), "update VSI for bridge mode failed, bmode = %d err %s aq_err %s\n",
bmode, ice_stat_str(status),
ice_aq_str(hw->adminq.sq_last_status));
ret = -EIO;
goto out;
}
/* Update sw flags for book keeping */
vsi_props->sw_flags = ctxt->info.sw_flags;
out:
kfree(ctxt);
return ret;
}
/**
* ice_bridge_setlink - Set the hardware bridge mode
* @dev: the netdev being configured
* @nlh: RTNL message
* @flags: bridge setlink flags
* @extack: netlink extended ack
*
* Sets the bridge mode (VEB/VEPA) of the switch to which the netdev (VSI) is
* hooked up to. Iterates through the PF VSI list and sets the loopback mode (if
* not already set for all VSIs connected to this switch. And also update the
* unicast switch filter rules for the corresponding switch of the netdev.
*/
static int
ice_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh,
u16 __always_unused flags,
struct netlink_ext_ack __always_unused *extack)
{
struct ice_netdev_priv *np = netdev_priv(dev);
struct ice_pf *pf = np->vsi->back;
struct nlattr *attr, *br_spec;
struct ice_hw *hw = &pf->hw;
enum ice_status status;
struct ice_sw *pf_sw;
int rem, v, err = 0;
pf_sw = pf->first_sw;
/* find the attribute in the netlink message */
br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
nla_for_each_nested(attr, br_spec, rem) {
__u16 mode;
if (nla_type(attr) != IFLA_BRIDGE_MODE)
continue;
mode = nla_get_u16(attr);
if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB)
return -EINVAL;
/* Continue if bridge mode is not being flipped */
if (mode == pf_sw->bridge_mode)
continue;
/* Iterates through the PF VSI list and update the loopback
* mode of the VSI
*/
ice_for_each_vsi(pf, v) {
if (!pf->vsi[v])
continue;
err = ice_vsi_update_bridge_mode(pf->vsi[v], mode);
if (err)
return err;
}
hw->evb_veb = (mode == BRIDGE_MODE_VEB);
/* Update the unicast switch filter rules for the corresponding
* switch of the netdev
*/
status = ice_update_sw_rule_bridge_mode(hw);
if (status) {
netdev_err(dev, "switch rule update failed, mode = %d err %s aq_err %s\n",
mode, ice_stat_str(status),
ice_aq_str(hw->adminq.sq_last_status));
/* revert hw->evb_veb */
hw->evb_veb = (pf_sw->bridge_mode == BRIDGE_MODE_VEB);
return -EIO;
}
pf_sw->bridge_mode = mode;
}
return 0;
}
/**
* ice_tx_timeout - Respond to a Tx Hang
* @netdev: network interface device structure
* @txqueue: Tx queue
*/
static void ice_tx_timeout(struct net_device *netdev, unsigned int txqueue)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_ring *tx_ring = NULL;
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
u32 i;
pf->tx_timeout_count++;
/* Check if PFC is enabled for the TC to which the queue belongs
* to. If yes then Tx timeout is not caused by a hung queue, no
* need to reset and rebuild
*/
if (ice_is_pfc_causing_hung_q(pf, txqueue)) {
dev_info(ice_pf_to_dev(pf), "Fake Tx hang detected on queue %u, timeout caused by PFC storm\n",
txqueue);
return;
}
/* now that we have an index, find the tx_ring struct */
for (i = 0; i < vsi->num_txq; i++)
if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
if (txqueue == vsi->tx_rings[i]->q_index) {
tx_ring = vsi->tx_rings[i];
break;
}
/* Reset recovery level if enough time has elapsed after last timeout.
* Also ensure no new reset action happens before next timeout period.
*/
if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ * 20)))
pf->tx_timeout_recovery_level = 1;
else if (time_before(jiffies, (pf->tx_timeout_last_recovery +
netdev->watchdog_timeo)))
return;
if (tx_ring) {
struct ice_hw *hw = &pf->hw;
u32 head, val = 0;
head = (rd32(hw, QTX_COMM_HEAD(vsi->txq_map[txqueue])) &
QTX_COMM_HEAD_HEAD_M) >> QTX_COMM_HEAD_HEAD_S;
/* Read interrupt register */
val = rd32(hw, GLINT_DYN_CTL(tx_ring->q_vector->reg_idx));
netdev_info(netdev, "tx_timeout: VSI_num: %d, Q %u, NTC: 0x%x, HW_HEAD: 0x%x, NTU: 0x%x, INT: 0x%x\n",
vsi->vsi_num, txqueue, tx_ring->next_to_clean,
head, tx_ring->next_to_use, val);
}
pf->tx_timeout_last_recovery = jiffies;
netdev_info(netdev, "tx_timeout recovery level %d, txqueue %u\n",
pf->tx_timeout_recovery_level, txqueue);
switch (pf->tx_timeout_recovery_level) {
case 1:
set_bit(__ICE_PFR_REQ, pf->state);
break;
case 2:
set_bit(__ICE_CORER_REQ, pf->state);
break;
case 3:
set_bit(__ICE_GLOBR_REQ, pf->state);
break;
default:
netdev_err(netdev, "tx_timeout recovery unsuccessful, device is in unrecoverable state.\n");
set_bit(__ICE_DOWN, pf->state);
set_bit(__ICE_NEEDS_RESTART, vsi->state);
set_bit(__ICE_SERVICE_DIS, pf->state);
break;
}
ice_service_task_schedule(pf);
pf->tx_timeout_recovery_level++;
}
/**
* ice_open - Called when a network interface becomes active
* @netdev: network interface device structure
*
* The open entry point is called when a network interface is made
* active by the system (IFF_UP). At this point all resources needed
* for transmit and receive operations are allocated, the interrupt
* handler is registered with the OS, the netdev watchdog is enabled,
* and the stack is notified that the interface is ready.
*
* Returns 0 on success, negative value on failure
*/
int ice_open(struct net_device *netdev)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_pf *pf = np->vsi->back;
if (ice_is_reset_in_progress(pf->state)) {
netdev_err(netdev, "can't open net device while reset is in progress");
return -EBUSY;
}
return ice_open_internal(netdev);
}
/**
* ice_open_internal - Called when a network interface becomes active
* @netdev: network interface device structure
*
* Internal ice_open implementation. Should not be used directly except for ice_open and reset
* handling routine
*
* Returns 0 on success, negative value on failure
*/
int ice_open_internal(struct net_device *netdev)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
struct ice_port_info *pi;
int err;
if (test_bit(__ICE_NEEDS_RESTART, pf->state)) {
netdev_err(netdev, "driver needs to be unloaded and reloaded\n");
return -EIO;
}
if (test_bit(__ICE_DOWN, pf->state)) {
netdev_err(netdev, "device is not ready yet\n");
return -EBUSY;
}
netif_carrier_off(netdev);
pi = vsi->port_info;
err = ice_update_link_info(pi);
if (err) {
netdev_err(netdev, "Failed to get link info, error %d\n",
err);
return err;
}
/* Set PHY if there is media, otherwise, turn off PHY */
if (pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE) {
clear_bit(ICE_FLAG_NO_MEDIA, pf->flags);
if (!test_bit(__ICE_PHY_INIT_COMPLETE, pf->state)) {
err = ice_init_phy_user_cfg(pi);
if (err) {
netdev_err(netdev, "Failed to initialize PHY settings, error %d\n",
err);
return err;
}
}
err = ice_configure_phy(vsi);
if (err) {
netdev_err(netdev, "Failed to set physical link up, error %d\n",
err);
return err;
}
} else {
set_bit(ICE_FLAG_NO_MEDIA, pf->flags);
err = ice_aq_set_link_restart_an(pi, false, NULL);
if (err) {
netdev_err(netdev, "Failed to set PHY state, VSI %d error %d\n",
vsi->vsi_num, err);
return err;
}
}
err = ice_vsi_open(vsi);
if (err)
netdev_err(netdev, "Failed to open VSI 0x%04X on switch 0x%04X\n",
vsi->vsi_num, vsi->vsw->sw_id);
/* Update existing tunnels information */
udp_tunnel_get_rx_info(netdev);
return err;
}
/**
* ice_stop - Disables a network interface
* @netdev: network interface device structure
*
* The stop entry point is called when an interface is de-activated by the OS,
* and the netdevice enters the DOWN state. The hardware is still under the
* driver's control, but the netdev interface is disabled.
*
* Returns success only - not allowed to fail
*/
int ice_stop(struct net_device *netdev)
{
struct ice_netdev_priv *np = netdev_priv(netdev);
struct ice_vsi *vsi = np->vsi;
struct ice_pf *pf = vsi->back;
if (ice_is_reset_in_progress(pf->state)) {
netdev_err(netdev, "can't stop net device while reset is in progress");
return -EBUSY;
}
ice_vsi_close(vsi);
return 0;
}
/**
* ice_features_check - Validate encapsulated packet conforms to limits
* @skb: skb buffer
* @netdev: This port's netdev
* @features: Offload features that the stack believes apply
*/
static netdev_features_t
ice_features_check(struct sk_buff *skb,
struct net_device __always_unused *netdev,
netdev_features_t features)
{
bool gso = skb_is_gso(skb);
size_t len;
/* No point in doing any of this if neither checksum nor GSO are
* being requested for this frame. We can rule out both by just
* checking for CHECKSUM_PARTIAL
*/
if (skb->ip_summed != CHECKSUM_PARTIAL)
return features;
/* We cannot support GSO if the MSS is going to be less than
* 64 bytes. If it is then we need to drop support for GSO.
*/
if (gso && (skb_shinfo(skb)->gso_size < ICE_TXD_CTX_MIN_MSS))
features &= ~NETIF_F_GSO_MASK;
len = skb_network_offset(skb);
if (len > ICE_TXD_MACLEN_MAX || len & 0x1)
goto out_rm_features;
len = skb_network_header_len(skb);
if (len > ICE_TXD_IPLEN_MAX || len & 0x1)
goto out_rm_features;
if (skb->encapsulation) {
/* this must work for VXLAN frames AND IPIP/SIT frames, and in
* the case of IPIP frames, the transport header pointer is
* after the inner header! So check to make sure that this
* is a GRE or UDP_TUNNEL frame before doing that math.
*/
if (gso && (skb_shinfo(skb)->gso_type &
(SKB_GSO_GRE | SKB_GSO_UDP_TUNNEL))) {
len = skb_inner_network_header(skb) -
skb_transport_header(skb);
if (len > ICE_TXD_L4LEN_MAX || len & 0x1)
goto out_rm_features;
}
len = skb_inner_network_header_len(skb);
if (len > ICE_TXD_IPLEN_MAX || len & 0x1)
goto out_rm_features;
}
return features;
out_rm_features:
return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
}
static const struct net_device_ops ice_netdev_safe_mode_ops = {
.ndo_open = ice_open,
.ndo_stop = ice_stop,
.ndo_start_xmit = ice_start_xmit,
.ndo_set_mac_address = ice_set_mac_address,
.ndo_validate_addr = eth_validate_addr,
.ndo_change_mtu = ice_change_mtu,
.ndo_get_stats64 = ice_get_stats64,
.ndo_tx_timeout = ice_tx_timeout,
.ndo_bpf = ice_xdp_safe_mode,
};
static const struct net_device_ops ice_netdev_ops = {
.ndo_open = ice_open,
.ndo_stop = ice_stop,
.ndo_start_xmit = ice_start_xmit,
.ndo_features_check = ice_features_check,
.ndo_set_rx_mode = ice_set_rx_mode,
.ndo_set_mac_address = ice_set_mac_address,
.ndo_validate_addr = eth_validate_addr,
.ndo_change_mtu = ice_change_mtu,
.ndo_get_stats64 = ice_get_stats64,
.ndo_set_tx_maxrate = ice_set_tx_maxrate,
.ndo_set_vf_spoofchk = ice_set_vf_spoofchk,
.ndo_set_vf_mac = ice_set_vf_mac,
.ndo_get_vf_config = ice_get_vf_cfg,
.ndo_set_vf_trust = ice_set_vf_trust,
.ndo_set_vf_vlan = ice_set_vf_port_vlan,
.ndo_set_vf_link_state = ice_set_vf_link_state,
.ndo_get_vf_stats = ice_get_vf_stats,
.ndo_vlan_rx_add_vid = ice_vlan_rx_add_vid,
.ndo_vlan_rx_kill_vid = ice_vlan_rx_kill_vid,
.ndo_set_features = ice_set_features,
.ndo_bridge_getlink = ice_bridge_getlink,
.ndo_bridge_setlink = ice_bridge_setlink,
.ndo_fdb_add = ice_fdb_add,
.ndo_fdb_del = ice_fdb_del,
#ifdef CONFIG_RFS_ACCEL
.ndo_rx_flow_steer = ice_rx_flow_steer,
#endif
.ndo_tx_timeout = ice_tx_timeout,
.ndo_bpf = ice_xdp,
.ndo_xdp_xmit = ice_xdp_xmit,
.ndo_xsk_wakeup = ice_xsk_wakeup,
.ndo_udp_tunnel_add = udp_tunnel_nic_add_port,
.ndo_udp_tunnel_del = udp_tunnel_nic_del_port,
};
View Git Blame Copy Permalink