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kernel-49/drivers/scsi/fcoe/fcoe_sysfs.c
Greg Kroah-Hartman f82077cb71 Merge 4.9.337 into android-4.9-q
Changes in 4.9.337
	mm/khugepaged: fix GUP-fast interaction by sending IPI
	mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths
	block: unhash blkdev part inode when the part is deleted
	ASoC: ops: Check bounds for second channel in snd_soc_put_volsw_sx()
	can: sja1000: fix size of OCR_MODE_MASK define
	ASoC: ops: Correct bounds check for second channel on SX controls
	udf: Discard preallocation before extending file with a hole
	udf: Drop unused arguments of udf_delete_aext()
	udf: Fix preallocation discarding at indirect extent boundary
	udf: Do not bother looking for prealloc extents if i_lenExtents matches i_size
	udf: Fix extending file within last block
	usb: gadget: uvc: Prevent buffer overflow in setup handler
	USB: serial: cp210x: add Kamstrup RF sniffer PIDs
	Bluetooth: L2CAP: Fix u8 overflow
	net: loopback: use NET_NAME_PREDICTABLE for name_assign_type
	drivers: soc: ti: knav_qmss_queue: Mark knav_acc_firmwares as static
	arm: dts: spear600: Fix clcd interrupt
	soc: ti: smartreflex: Fix PM disable depth imbalance in omap_sr_probe
	ARM: dts: dove: Fix assigned-addresses for every PCIe Root Port
	ARM: dts: armada-370: Fix assigned-addresses for every PCIe Root Port
	ARM: dts: armada-xp: Fix assigned-addresses for every PCIe Root Port
	ARM: dts: armada-375: Fix assigned-addresses for every PCIe Root Port
	ARM: dts: armada-38x: Fix assigned-addresses for every PCIe Root Port
	ARM: dts: armada-39x: Fix assigned-addresses for every PCIe Root Port
	ARM: mmp: fix timer_read delay
	pstore: Avoid kcore oops by vmap()ing with VM_IOREMAP
	cpuidle: dt: Return the correct numbers of parsed idle states
	alpha: fix syscall entry in !AUDUT_SYSCALL case
	PM: hibernate: Fix mistake in kerneldoc comment
	fs: don't audit the capability check in simple_xattr_list()
	perf: Fix possible memleak in pmu_dev_alloc()
	timerqueue: Use rb_entry_safe() in timerqueue_getnext()
	ocfs2: fix memory leak in ocfs2_stack_glue_init()
	MIPS: vpe-mt: fix possible memory leak while module exiting
	MIPS: vpe-cmp: fix possible memory leak while module exiting
	PNP: fix name memory leak in pnp_alloc_dev()
	irqchip: gic-pm: Use pm_runtime_resume_and_get() in gic_probe()
	libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value
	lib/notifier-error-inject: fix error when writing -errno to debugfs file
	rapidio: fix possible name leaks when rio_add_device() fails
	rapidio: rio: fix possible name leak in rio_register_mport()
	ACPICA: Fix use-after-free in acpi_ut_copy_ipackage_to_ipackage()
	uprobes/x86: Allow to probe a NOP instruction with 0x66 prefix
	x86/xen: Fix memory leak in xen_init_lock_cpu()
	MIPS: BCM63xx: Add check for NULL for clk in clk_enable
	fs: sysv: Fix sysv_nblocks() returns wrong value
	rapidio: fix possible UAF when kfifo_alloc() fails
	eventfd: change int to __u64 in eventfd_signal() ifndef CONFIG_EVENTFD
	hfs: Fix OOB Write in hfs_asc2mac
	rapidio: devices: fix missing put_device in mport_cdev_open
	wifi: ath9k: hif_usb: fix memory leak of urbs in ath9k_hif_usb_dealloc_tx_urbs()
	wifi: ath9k: hif_usb: Fix use-after-free in ath9k_hif_usb_reg_in_cb()
	media: i2c: ad5820: Fix error path
	media: vivid: fix compose size exceed boundary
	mtd: Fix device name leak when register device failed in add_mtd_device()
	ASoC: pxa: fix null-pointer dereference in filter()
	regulator: core: fix unbalanced of node refcount in regulator_dev_lookup()
	ima: Fix misuse of dereference of pointer in template_desc_init_fields()
	wifi: ath10k: Fix return value in ath10k_pci_init()
	mtd: lpddr2_nvm: Fix possible null-ptr-deref
	Input: elants_i2c - properly handle the reset GPIO when power is off
	media: solo6x10: fix possible memory leak in solo_sysfs_init()
	media: platform: exynos4-is: Fix error handling in fimc_md_init()
	HID: hid-sensor-custom: set fixed size for custom attributes
	ALSA: seq: fix undefined behavior in bit shift for SNDRV_SEQ_FILTER_USE_EVENT
	clk: rockchip: Fix memory leak in rockchip_clk_register_pll()
	mtd: maps: pxa2xx-flash: fix memory leak in probe
	media: imon: fix a race condition in send_packet()
	pinctrl: pinconf-generic: add missing of_node_put()
	media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()
	NFSv4.2: Fix a memory stomp in decode_attr_security_label
	NFSv4: Fix a deadlock between nfs4_open_recover_helper() and delegreturn
	ALSA: asihpi: fix missing pci_disable_device()
	drm/radeon: Fix PCI device refcount leak in radeon_atrm_get_bios()
	drm/amdgpu: Fix PCI device refcount leak in amdgpu_atrm_get_bios()
	ASoC: pcm512x: Fix PM disable depth imbalance in pcm512x_probe
	bonding: uninitialized variable in bond_miimon_inspect()
	regulator: core: fix module refcount leak in set_supply()
	media: saa7164: fix missing pci_disable_device()
	ALSA: mts64: fix possible null-ptr-defer in snd_mts64_interrupt
	SUNRPC: Fix missing release socket in rpc_sockname()
	mmc: moxart: fix return value check of mmc_add_host()
	mmc: mxcmmc: fix return value check of mmc_add_host()
	mmc: rtsx_usb_sdmmc: fix return value check of mmc_add_host()
	mmc: toshsd: fix return value check of mmc_add_host()
	mmc: vub300: fix return value check of mmc_add_host()
	mmc: via-sdmmc: fix return value check of mmc_add_host()
	mmc: wbsd: fix return value check of mmc_add_host()
	mmc: mmci: fix return value check of mmc_add_host()
	media: c8sectpfe: Add of_node_put() when breaking out of loop
	media: coda: Add check for dcoda_iram_alloc
	media: coda: Add check for kmalloc
	wifi: rtl8xxxu: Add __packed to struct rtl8723bu_c2h
	wifi: brcmfmac: Fix error return code in brcmf_sdio_download_firmware()
	blktrace: Fix output non-blktrace event when blk_classic option enabled
	net: vmw_vsock: vmci: Check memcpy_from_msg()
	net: defxx: Fix missing err handling in dfx_init()
	drivers: net: qlcnic: Fix potential memory leak in qlcnic_sriov_init()
	ethernet: s2io: don't call dev_kfree_skb() under spin_lock_irqsave()
	net: farsync: Fix kmemleak when rmmods farsync
	net/tunnel: wait until all sk_user_data reader finish before releasing the sock
	net: apple: mace: don't call dev_kfree_skb() under spin_lock_irqsave()
	net: apple: bmac: don't call dev_kfree_skb() under spin_lock_irqsave()
	net: emaclite: don't call dev_kfree_skb() under spin_lock_irqsave()
	net: ethernet: dnet: don't call dev_kfree_skb() under spin_lock_irqsave()
	hamradio: don't call dev_kfree_skb() under spin_lock_irqsave()
	net: amd: lance: don't call dev_kfree_skb() under spin_lock_irqsave()
	ntb_netdev: Use dev_kfree_skb_any() in interrupt context
	Bluetooth: btusb: don't call kfree_skb() under spin_lock_irqsave()
	Bluetooth: hci_qca: don't call kfree_skb() under spin_lock_irqsave()
	Bluetooth: hci_h5: don't call kfree_skb() under spin_lock_irqsave()
	Bluetooth: hci_bcsp: don't call kfree_skb() under spin_lock_irqsave()
	Bluetooth: hci_core: don't call kfree_skb() under spin_lock_irqsave()
	stmmac: fix potential division by 0
	scsi: hpsa: Fix error handling in hpsa_add_sas_host()
	scsi: hpsa: Fix possible memory leak in hpsa_add_sas_device()
	scsi: fcoe: Fix possible name leak when device_register() fails
	scsi: ipr: Fix WARNING in ipr_init()
	scsi: fcoe: Fix transport not deattached when fcoe_if_init() fails
	scsi: snic: Fix possible UAF in snic_tgt_create()
	orangefs: Fix sysfs not cleanup when dev init failed
	crypto: img-hash - Fix variable dereferenced before check 'hdev->req'
	hwrng: amd - Fix PCI device refcount leak
	hwrng: geode - Fix PCI device refcount leak
	IB/IPoIB: Fix queue count inconsistency for PKEY child interfaces
	drivers: dio: fix possible memory leak in dio_init()
	vfio: platform: Do not pass return buffer to ACPI _RST method
	uio: uio_dmem_genirq: Fix missing unlock in irq configuration
	uio: uio_dmem_genirq: Fix deadlock between irq config and handling
	usb: fotg210-udc: Fix ages old endianness issues
	staging: vme_user: Fix possible UAF in tsi148_dma_list_add
	serial: amba-pl011: avoid SBSA UART accessing DMACR register
	serial: pch: Fix PCI device refcount leak in pch_request_dma()
	serial: sunsab: Fix error handling in sunsab_init()
	misc: tifm: fix possible memory leak in tifm_7xx1_switch_media()
	misc: sgi-gru: fix use-after-free error in gru_set_context_option, gru_fault and gru_handle_user_call_os
	cxl: fix possible null-ptr-deref in cxl_guest_init_afu|adapter()
	cxl: fix possible null-ptr-deref in cxl_pci_init_afu|adapter()
	drivers: mcb: fix resource leak in mcb_probe()
	mcb: mcb-parse: fix error handing in chameleon_parse_gdd()
	chardev: fix error handling in cdev_device_add()
	i2c: pxa-pci: fix missing pci_disable_device() on error in ce4100_i2c_probe
	staging: rtl8192u: Fix use after free in ieee80211_rx()
	staging: rtl8192e: Fix potential use-after-free in rtllib_rx_Monitor()
	vme: Fix error not catched in fake_init()
	i2c: ismt: Fix an out-of-bounds bug in ismt_access()
	usb: storage: Add check for kcalloc
	fbdev: ssd1307fb: Drop optional dependency
	fbdev: pm2fb: fix missing pci_disable_device()
	fbdev: via: Fix error in via_core_init()
	fbdev: vermilion: decrease reference count in error path
	fbdev: uvesafb: Fixes an error handling path in uvesafb_probe()
	HSI: omap_ssi_core: fix unbalanced pm_runtime_disable()
	HSI: omap_ssi_core: fix possible memory leak in ssi_probe()
	power: supply: fix residue sysfs file in error handle route of __power_supply_register()
	HSI: omap_ssi_core: Fix error handling in ssi_init()
	include/uapi/linux/swab: Fix potentially missing __always_inline
	rtc: snvs: Allow a time difference on clock register read
	iommu/fsl_pamu: Fix resource leak in fsl_pamu_probe()
	macintosh: fix possible memory leak in macio_add_one_device()
	macintosh/macio-adb: check the return value of ioremap()
	powerpc/52xx: Fix a resource leak in an error handling path
	powerpc/perf: callchain validate kernel stack pointer bounds
	powerpc/83xx/mpc832x_rdb: call platform_device_put() in error case in of_fsl_spi_probe()
	powerpc/hv-gpci: Fix hv_gpci event list
	selftests/powerpc: Fix resource leaks
	rtc: st-lpc: Add missing clk_disable_unprepare in st_rtc_probe()
	nfsd: under NFSv4.1, fix double svc_xprt_put on rpc_create failure
	mISDN: hfcsusb: don't call dev_kfree_skb/kfree_skb() under spin_lock_irqsave()
	mISDN: hfcpci: don't call dev_kfree_skb/kfree_skb() under spin_lock_irqsave()
	mISDN: hfcmulti: don't call dev_kfree_skb/kfree_skb() under spin_lock_irqsave()
	nfc: pn533: Clear nfc_target before being used
	r6040: Fix kmemleak in probe and remove
	openvswitch: Fix flow lookup to use unmasked key
	skbuff: Account for tail adjustment during pull operations
	net_sched: reject TCF_EM_SIMPLE case for complex ematch module
	myri10ge: Fix an error handling path in myri10ge_probe()
	net: stream: purge sk_error_queue in sk_stream_kill_queues()
	binfmt_misc: fix shift-out-of-bounds in check_special_flags
	fs: jfs: fix shift-out-of-bounds in dbAllocAG
	udf: Avoid double brelse() in udf_rename()
	fs: jfs: fix shift-out-of-bounds in dbDiscardAG
	ACPICA: Fix error code path in acpi_ds_call_control_method()
	nilfs2: fix shift-out-of-bounds/overflow in nilfs_sb2_bad_offset()
	acct: fix potential integer overflow in encode_comp_t()
	hfs: fix OOB Read in __hfs_brec_find
	wifi: ath9k: verify the expected usb_endpoints are present
	wifi: ar5523: Fix use-after-free on ar5523_cmd() timed out
	ipmi: fix memleak when unload ipmi driver
	net: ethernet: ti: Fix return type of netcp_ndo_start_xmit()
	hamradio: baycom_epp: Fix return type of baycom_send_packet()
	wifi: brcmfmac: Fix potential shift-out-of-bounds in brcmf_fw_alloc_request()
	igb: Do not free q_vector unless new one was allocated
	s390/ctcm: Fix return type of ctc{mp,}m_tx()
	s390/netiucv: Fix return type of netiucv_tx()
	s390/lcs: Fix return type of lcs_start_xmit()
	drm/sti: Use drm_mode_copy()
	md/raid1: stop mdx_raid1 thread when raid1 array run failed
	mrp: introduce active flags to prevent UAF when applicant uninit
	ppp: associate skb with a device at tx
	media: dvb-frontends: fix leak of memory fw
	media: dvb-usb: fix memory leak in dvb_usb_adapter_init()
	blk-mq: fix possible memleak when register 'hctx' failed
	mmc: f-sdh30: Add quirks for broken timeout clock capability
	media: si470x: Fix use-after-free in si470x_int_in_callback()
	clk: st: Fix memory leak in st_of_quadfs_setup()
	drm/fsl-dcu: Fix return type of fsl_dcu_drm_connector_mode_valid()
	drm/sti: Fix return type of sti_{dvo,hda,hdmi}_connector_mode_valid()
	orangefs: Fix kmemleak in orangefs_prepare_debugfs_help_string()
	ASoC: mediatek: mt8173-rt5650-rt5514: fix refcount leak in mt8173_rt5650_rt5514_dev_probe()
	ASoC: wm8994: Fix potential deadlock
	ASoC: rockchip: spdif: Add missing clk_disable_unprepare() in rk_spdif_runtime_resume()
	ASoC: rt5670: Remove unbalanced pm_runtime_put()
	HID: wacom: Ensure bootloader PID is usable in hidraw mode
	reiserfs: Add missing calls to reiserfs_security_free()
	iio: adc: ad_sigma_delta: do not use internal iio_dev lock
	gcov: add support for checksum field
	powerpc/rtas: avoid scheduling in rtas_os_term()
	HID: plantronics: Additional PIDs for double volume key presses quirk
	hfsplus: fix bug causing custom uid and gid being unable to be assigned with mount
	ALSA: line6: correct midi status byte when receiving data from podxt
	ALSA: line6: fix stack overflow in line6_midi_transmit
	pnode: terminate at peers of source
	md: fix a crash in mempool_free
	mmc: vub300: fix warning - do not call blocking ops when !TASK_RUNNING
	media: stv0288: use explicitly signed char
	ktest.pl minconfig: Unset configs instead of just removing them
	ARM: ux500: do not directly dereference __iomem
	dm cache: Fix ABBA deadlock between shrink_slab and dm_cache_metadata_abort
	dm thin: Use last transaction's pmd->root when commit failed
	dm thin: Fix UAF in run_timer_softirq()
	dm cache: Fix UAF in destroy()
	dm cache: set needs_check flag after aborting metadata
	tracing: Fix infinite loop in tracing_read_pipe on overflowed print_trace_line
	ARM: 9256/1: NWFPE: avoid compiler-generated __aeabi_uldivmod
	media: dvb-core: Fix double free in dvb_register_device()
	cifs: fix confusing debug message
	PCI/sysfs: Fix double free in error path
	crypto: n2 - add missing hash statesize
	iommu/amd: Fix ivrs_acpihid cmdline parsing code
	parisc: led: Fix potential null-ptr-deref in start_task()
	device_cgroup: Roll back to original exceptions after copy failure
	drm/connector: send hotplug uevent on connector cleanup
	drm/vmwgfx: Validate the box size for the snooped cursor
	ext4: add inode table check in __ext4_get_inode_loc to aovid possible infinite loop
	ext4: fix undefined behavior in bit shift for ext4_check_flag_values
	ext4: fix bug_on in __es_tree_search caused by bad boot loader inode
	ext4: init quota for 'old.inode' in 'ext4_rename'
	ext4: fix error code return to user-space in ext4_get_branch()
	ext4: avoid BUG_ON when creating xattrs
	ext4: initialize quota before expanding inode in setproject ioctl
	Linux 4.9.337

Change-Id: I923e3fef499ae1688b25c70a1a805b55a9f4f027
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
2023-01-09 02:03:47 +03:00

995 lines
27 KiB
C

/*
* Copyright(c) 2011 - 2012 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
* Maintained at www.Open-FCoE.org
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/etherdevice.h>
#include <linux/ctype.h>
#include <scsi/fcoe_sysfs.h>
#include <scsi/libfcoe.h>
/*
* OK to include local libfcoe.h for debug_logging, but cannot include
* <scsi/libfcoe.h> otherwise non-netdev based fcoe solutions would have
* have to include more than fcoe_sysfs.h.
*/
#include "libfcoe.h"
static atomic_t ctlr_num;
static atomic_t fcf_num;
/*
* fcoe_fcf_dev_loss_tmo: the default number of seconds that fcoe sysfs
* should insulate the loss of a fcf.
*/
static unsigned int fcoe_fcf_dev_loss_tmo = 1800; /* seconds */
module_param_named(fcf_dev_loss_tmo, fcoe_fcf_dev_loss_tmo,
uint, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(fcf_dev_loss_tmo,
"Maximum number of seconds that libfcoe should"
" insulate the loss of a fcf. Once this value is"
" exceeded, the fcf is removed.");
/*
* These are used by the fcoe_*_show_function routines, they
* are intentionally placed in the .c file as they're not intended
* for use throughout the code.
*/
#define fcoe_ctlr_id(x) \
((x)->id)
#define fcoe_ctlr_work_q_name(x) \
((x)->work_q_name)
#define fcoe_ctlr_work_q(x) \
((x)->work_q)
#define fcoe_ctlr_devloss_work_q_name(x) \
((x)->devloss_work_q_name)
#define fcoe_ctlr_devloss_work_q(x) \
((x)->devloss_work_q)
#define fcoe_ctlr_mode(x) \
((x)->mode)
#define fcoe_ctlr_fcf_dev_loss_tmo(x) \
((x)->fcf_dev_loss_tmo)
#define fcoe_ctlr_link_fail(x) \
((x)->lesb.lesb_link_fail)
#define fcoe_ctlr_vlink_fail(x) \
((x)->lesb.lesb_vlink_fail)
#define fcoe_ctlr_miss_fka(x) \
((x)->lesb.lesb_miss_fka)
#define fcoe_ctlr_symb_err(x) \
((x)->lesb.lesb_symb_err)
#define fcoe_ctlr_err_block(x) \
((x)->lesb.lesb_err_block)
#define fcoe_ctlr_fcs_error(x) \
((x)->lesb.lesb_fcs_error)
#define fcoe_ctlr_enabled(x) \
((x)->enabled)
#define fcoe_fcf_state(x) \
((x)->state)
#define fcoe_fcf_fabric_name(x) \
((x)->fabric_name)
#define fcoe_fcf_switch_name(x) \
((x)->switch_name)
#define fcoe_fcf_fc_map(x) \
((x)->fc_map)
#define fcoe_fcf_vfid(x) \
((x)->vfid)
#define fcoe_fcf_mac(x) \
((x)->mac)
#define fcoe_fcf_priority(x) \
((x)->priority)
#define fcoe_fcf_fka_period(x) \
((x)->fka_period)
#define fcoe_fcf_dev_loss_tmo(x) \
((x)->dev_loss_tmo)
#define fcoe_fcf_selected(x) \
((x)->selected)
#define fcoe_fcf_vlan_id(x) \
((x)->vlan_id)
/*
* dev_loss_tmo attribute
*/
static int fcoe_str_to_dev_loss(const char *buf, unsigned long *val)
{
int ret;
ret = kstrtoul(buf, 0, val);
if (ret)
return -EINVAL;
/*
* Check for overflow; dev_loss_tmo is u32
*/
if (*val > UINT_MAX)
return -EINVAL;
return 0;
}
static int fcoe_fcf_set_dev_loss_tmo(struct fcoe_fcf_device *fcf,
unsigned long val)
{
if ((fcf->state == FCOE_FCF_STATE_UNKNOWN) ||
(fcf->state == FCOE_FCF_STATE_DISCONNECTED) ||
(fcf->state == FCOE_FCF_STATE_DELETED))
return -EBUSY;
/*
* Check for overflow; dev_loss_tmo is u32
*/
if (val > UINT_MAX)
return -EINVAL;
fcoe_fcf_dev_loss_tmo(fcf) = val;
return 0;
}
#define FCOE_DEVICE_ATTR(_prefix, _name, _mode, _show, _store) \
struct device_attribute device_attr_fcoe_##_prefix##_##_name = \
__ATTR(_name, _mode, _show, _store)
#define fcoe_ctlr_show_function(field, format_string, sz, cast) \
static ssize_t show_fcoe_ctlr_device_##field(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); \
if (ctlr->f->get_fcoe_ctlr_##field) \
ctlr->f->get_fcoe_ctlr_##field(ctlr); \
return snprintf(buf, sz, format_string, \
cast fcoe_ctlr_##field(ctlr)); \
}
#define fcoe_fcf_show_function(field, format_string, sz, cast) \
static ssize_t show_fcoe_fcf_device_##field(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
struct fcoe_fcf_device *fcf = dev_to_fcf(dev); \
struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf); \
if (ctlr->f->get_fcoe_fcf_##field) \
ctlr->f->get_fcoe_fcf_##field(fcf); \
return snprintf(buf, sz, format_string, \
cast fcoe_fcf_##field(fcf)); \
}
#define fcoe_ctlr_private_show_function(field, format_string, sz, cast) \
static ssize_t show_fcoe_ctlr_device_##field(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev); \
return snprintf(buf, sz, format_string, cast fcoe_ctlr_##field(ctlr)); \
}
#define fcoe_fcf_private_show_function(field, format_string, sz, cast) \
static ssize_t show_fcoe_fcf_device_##field(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
struct fcoe_fcf_device *fcf = dev_to_fcf(dev); \
return snprintf(buf, sz, format_string, cast fcoe_fcf_##field(fcf)); \
}
#define fcoe_ctlr_private_rd_attr(field, format_string, sz) \
fcoe_ctlr_private_show_function(field, format_string, sz, ) \
static FCOE_DEVICE_ATTR(ctlr, field, S_IRUGO, \
show_fcoe_ctlr_device_##field, NULL)
#define fcoe_ctlr_rd_attr(field, format_string, sz) \
fcoe_ctlr_show_function(field, format_string, sz, ) \
static FCOE_DEVICE_ATTR(ctlr, field, S_IRUGO, \
show_fcoe_ctlr_device_##field, NULL)
#define fcoe_fcf_rd_attr(field, format_string, sz) \
fcoe_fcf_show_function(field, format_string, sz, ) \
static FCOE_DEVICE_ATTR(fcf, field, S_IRUGO, \
show_fcoe_fcf_device_##field, NULL)
#define fcoe_fcf_private_rd_attr(field, format_string, sz) \
fcoe_fcf_private_show_function(field, format_string, sz, ) \
static FCOE_DEVICE_ATTR(fcf, field, S_IRUGO, \
show_fcoe_fcf_device_##field, NULL)
#define fcoe_ctlr_private_rd_attr_cast(field, format_string, sz, cast) \
fcoe_ctlr_private_show_function(field, format_string, sz, (cast)) \
static FCOE_DEVICE_ATTR(ctlr, field, S_IRUGO, \
show_fcoe_ctlr_device_##field, NULL)
#define fcoe_fcf_private_rd_attr_cast(field, format_string, sz, cast) \
fcoe_fcf_private_show_function(field, format_string, sz, (cast)) \
static FCOE_DEVICE_ATTR(fcf, field, S_IRUGO, \
show_fcoe_fcf_device_##field, NULL)
#define fcoe_enum_name_search(title, table_type, table) \
static const char *get_fcoe_##title##_name(enum table_type table_key) \
{ \
if (table_key < 0 || table_key >= ARRAY_SIZE(table)) \
return NULL; \
return table[table_key]; \
}
static char *fip_conn_type_names[] = {
[ FIP_CONN_TYPE_UNKNOWN ] = "Unknown",
[ FIP_CONN_TYPE_FABRIC ] = "Fabric",
[ FIP_CONN_TYPE_VN2VN ] = "VN2VN",
};
fcoe_enum_name_search(ctlr_mode, fip_conn_type, fip_conn_type_names)
static enum fip_conn_type fcoe_parse_mode(const char *buf)
{
int i;
for (i = 0; i < ARRAY_SIZE(fip_conn_type_names); i++) {
if (strcasecmp(buf, fip_conn_type_names[i]) == 0)
return i;
}
return FIP_CONN_TYPE_UNKNOWN;
}
static char *fcf_state_names[] = {
[ FCOE_FCF_STATE_UNKNOWN ] = "Unknown",
[ FCOE_FCF_STATE_DISCONNECTED ] = "Disconnected",
[ FCOE_FCF_STATE_CONNECTED ] = "Connected",
};
fcoe_enum_name_search(fcf_state, fcf_state, fcf_state_names)
#define FCOE_FCF_STATE_MAX_NAMELEN 50
static ssize_t show_fcf_state(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct fcoe_fcf_device *fcf = dev_to_fcf(dev);
const char *name;
name = get_fcoe_fcf_state_name(fcf->state);
if (!name)
return -EINVAL;
return snprintf(buf, FCOE_FCF_STATE_MAX_NAMELEN, "%s\n", name);
}
static FCOE_DEVICE_ATTR(fcf, state, S_IRUGO, show_fcf_state, NULL);
#define FCOE_MAX_MODENAME_LEN 20
static ssize_t show_ctlr_mode(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
const char *name;
name = get_fcoe_ctlr_mode_name(ctlr->mode);
if (!name)
return -EINVAL;
return snprintf(buf, FCOE_MAX_MODENAME_LEN,
"%s\n", name);
}
static ssize_t store_ctlr_mode(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
char mode[FCOE_MAX_MODENAME_LEN + 1];
if (count > FCOE_MAX_MODENAME_LEN)
return -EINVAL;
strncpy(mode, buf, count);
if (mode[count - 1] == '\n')
mode[count - 1] = '\0';
else
mode[count] = '\0';
switch (ctlr->enabled) {
case FCOE_CTLR_ENABLED:
LIBFCOE_SYSFS_DBG(ctlr, "Cannot change mode when enabled.\n");
return -EBUSY;
case FCOE_CTLR_DISABLED:
if (!ctlr->f->set_fcoe_ctlr_mode) {
LIBFCOE_SYSFS_DBG(ctlr,
"Mode change not supported by LLD.\n");
return -ENOTSUPP;
}
ctlr->mode = fcoe_parse_mode(mode);
if (ctlr->mode == FIP_CONN_TYPE_UNKNOWN) {
LIBFCOE_SYSFS_DBG(ctlr, "Unknown mode %s provided.\n",
buf);
return -EINVAL;
}
ctlr->f->set_fcoe_ctlr_mode(ctlr);
LIBFCOE_SYSFS_DBG(ctlr, "Mode changed to %s.\n", buf);
return count;
case FCOE_CTLR_UNUSED:
default:
LIBFCOE_SYSFS_DBG(ctlr, "Mode change not supported.\n");
return -ENOTSUPP;
};
}
static FCOE_DEVICE_ATTR(ctlr, mode, S_IRUGO | S_IWUSR,
show_ctlr_mode, store_ctlr_mode);
static ssize_t store_ctlr_enabled(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
int rc;
switch (ctlr->enabled) {
case FCOE_CTLR_ENABLED:
if (*buf == '1')
return count;
ctlr->enabled = FCOE_CTLR_DISABLED;
break;
case FCOE_CTLR_DISABLED:
if (*buf == '0')
return count;
ctlr->enabled = FCOE_CTLR_ENABLED;
break;
case FCOE_CTLR_UNUSED:
return -ENOTSUPP;
};
rc = ctlr->f->set_fcoe_ctlr_enabled(ctlr);
if (rc)
return rc;
return count;
}
static char *ctlr_enabled_state_names[] = {
[ FCOE_CTLR_ENABLED ] = "1",
[ FCOE_CTLR_DISABLED ] = "0",
};
fcoe_enum_name_search(ctlr_enabled_state, ctlr_enabled_state,
ctlr_enabled_state_names)
#define FCOE_CTLR_ENABLED_MAX_NAMELEN 50
static ssize_t show_ctlr_enabled_state(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
const char *name;
name = get_fcoe_ctlr_enabled_state_name(ctlr->enabled);
if (!name)
return -EINVAL;
return snprintf(buf, FCOE_CTLR_ENABLED_MAX_NAMELEN,
"%s\n", name);
}
static FCOE_DEVICE_ATTR(ctlr, enabled, S_IRUGO | S_IWUSR,
show_ctlr_enabled_state,
store_ctlr_enabled);
static ssize_t store_ctlr_fip_resp(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr);
mutex_lock(&fip->ctlr_mutex);
if ((buf[1] == '\0') || ((buf[1] == '\n') && (buf[2] == '\0'))) {
if (buf[0] == '1') {
fip->fip_resp = 1;
mutex_unlock(&fip->ctlr_mutex);
return count;
}
if (buf[0] == '0') {
fip->fip_resp = 0;
mutex_unlock(&fip->ctlr_mutex);
return count;
}
}
mutex_unlock(&fip->ctlr_mutex);
return -EINVAL;
}
static ssize_t show_ctlr_fip_resp(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr);
return sprintf(buf, "%d\n", fip->fip_resp ? 1 : 0);
}
static FCOE_DEVICE_ATTR(ctlr, fip_vlan_responder, S_IRUGO | S_IWUSR,
show_ctlr_fip_resp,
store_ctlr_fip_resp);
static ssize_t
store_private_fcoe_ctlr_fcf_dev_loss_tmo(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
struct fcoe_fcf_device *fcf;
unsigned long val;
int rc;
rc = fcoe_str_to_dev_loss(buf, &val);
if (rc)
return rc;
fcoe_ctlr_fcf_dev_loss_tmo(ctlr) = val;
mutex_lock(&ctlr->lock);
list_for_each_entry(fcf, &ctlr->fcfs, peers)
fcoe_fcf_set_dev_loss_tmo(fcf, val);
mutex_unlock(&ctlr->lock);
return count;
}
fcoe_ctlr_private_show_function(fcf_dev_loss_tmo, "%d\n", 20, );
static FCOE_DEVICE_ATTR(ctlr, fcf_dev_loss_tmo, S_IRUGO | S_IWUSR,
show_fcoe_ctlr_device_fcf_dev_loss_tmo,
store_private_fcoe_ctlr_fcf_dev_loss_tmo);
/* Link Error Status Block (LESB) */
fcoe_ctlr_rd_attr(link_fail, "%u\n", 20);
fcoe_ctlr_rd_attr(vlink_fail, "%u\n", 20);
fcoe_ctlr_rd_attr(miss_fka, "%u\n", 20);
fcoe_ctlr_rd_attr(symb_err, "%u\n", 20);
fcoe_ctlr_rd_attr(err_block, "%u\n", 20);
fcoe_ctlr_rd_attr(fcs_error, "%u\n", 20);
fcoe_fcf_private_rd_attr_cast(fabric_name, "0x%llx\n", 20, unsigned long long);
fcoe_fcf_private_rd_attr_cast(switch_name, "0x%llx\n", 20, unsigned long long);
fcoe_fcf_private_rd_attr(priority, "%u\n", 20);
fcoe_fcf_private_rd_attr(fc_map, "0x%x\n", 20);
fcoe_fcf_private_rd_attr(vfid, "%u\n", 20);
fcoe_fcf_private_rd_attr(mac, "%pM\n", 20);
fcoe_fcf_private_rd_attr(fka_period, "%u\n", 20);
fcoe_fcf_rd_attr(selected, "%u\n", 20);
fcoe_fcf_rd_attr(vlan_id, "%u\n", 20);
fcoe_fcf_private_show_function(dev_loss_tmo, "%d\n", 20, )
static ssize_t
store_fcoe_fcf_dev_loss_tmo(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct fcoe_fcf_device *fcf = dev_to_fcf(dev);
unsigned long val;
int rc;
rc = fcoe_str_to_dev_loss(buf, &val);
if (rc)
return rc;
rc = fcoe_fcf_set_dev_loss_tmo(fcf, val);
if (rc)
return rc;
return count;
}
static FCOE_DEVICE_ATTR(fcf, dev_loss_tmo, S_IRUGO | S_IWUSR,
show_fcoe_fcf_device_dev_loss_tmo,
store_fcoe_fcf_dev_loss_tmo);
static struct attribute *fcoe_ctlr_lesb_attrs[] = {
&device_attr_fcoe_ctlr_link_fail.attr,
&device_attr_fcoe_ctlr_vlink_fail.attr,
&device_attr_fcoe_ctlr_miss_fka.attr,
&device_attr_fcoe_ctlr_symb_err.attr,
&device_attr_fcoe_ctlr_err_block.attr,
&device_attr_fcoe_ctlr_fcs_error.attr,
NULL,
};
static struct attribute_group fcoe_ctlr_lesb_attr_group = {
.name = "lesb",
.attrs = fcoe_ctlr_lesb_attrs,
};
static struct attribute *fcoe_ctlr_attrs[] = {
&device_attr_fcoe_ctlr_fip_vlan_responder.attr,
&device_attr_fcoe_ctlr_fcf_dev_loss_tmo.attr,
&device_attr_fcoe_ctlr_enabled.attr,
&device_attr_fcoe_ctlr_mode.attr,
NULL,
};
static struct attribute_group fcoe_ctlr_attr_group = {
.attrs = fcoe_ctlr_attrs,
};
static const struct attribute_group *fcoe_ctlr_attr_groups[] = {
&fcoe_ctlr_attr_group,
&fcoe_ctlr_lesb_attr_group,
NULL,
};
static struct attribute *fcoe_fcf_attrs[] = {
&device_attr_fcoe_fcf_fabric_name.attr,
&device_attr_fcoe_fcf_switch_name.attr,
&device_attr_fcoe_fcf_dev_loss_tmo.attr,
&device_attr_fcoe_fcf_fc_map.attr,
&device_attr_fcoe_fcf_vfid.attr,
&device_attr_fcoe_fcf_mac.attr,
&device_attr_fcoe_fcf_priority.attr,
&device_attr_fcoe_fcf_fka_period.attr,
&device_attr_fcoe_fcf_state.attr,
&device_attr_fcoe_fcf_selected.attr,
&device_attr_fcoe_fcf_vlan_id.attr,
NULL
};
static struct attribute_group fcoe_fcf_attr_group = {
.attrs = fcoe_fcf_attrs,
};
static const struct attribute_group *fcoe_fcf_attr_groups[] = {
&fcoe_fcf_attr_group,
NULL,
};
static struct bus_type fcoe_bus_type;
static int fcoe_bus_match(struct device *dev,
struct device_driver *drv)
{
if (dev->bus == &fcoe_bus_type)
return 1;
return 0;
}
/**
* fcoe_ctlr_device_release() - Release the FIP ctlr memory
* @dev: Pointer to the FIP ctlr's embedded device
*
* Called when the last FIP ctlr reference is released.
*/
static void fcoe_ctlr_device_release(struct device *dev)
{
struct fcoe_ctlr_device *ctlr = dev_to_ctlr(dev);
kfree(ctlr);
}
/**
* fcoe_fcf_device_release() - Release the FIP fcf memory
* @dev: Pointer to the fcf's embedded device
*
* Called when the last FIP fcf reference is released.
*/
static void fcoe_fcf_device_release(struct device *dev)
{
struct fcoe_fcf_device *fcf = dev_to_fcf(dev);
kfree(fcf);
}
static struct device_type fcoe_ctlr_device_type = {
.name = "fcoe_ctlr",
.groups = fcoe_ctlr_attr_groups,
.release = fcoe_ctlr_device_release,
};
static struct device_type fcoe_fcf_device_type = {
.name = "fcoe_fcf",
.groups = fcoe_fcf_attr_groups,
.release = fcoe_fcf_device_release,
};
static BUS_ATTR(ctlr_create, S_IWUSR, NULL, fcoe_ctlr_create_store);
static BUS_ATTR(ctlr_destroy, S_IWUSR, NULL, fcoe_ctlr_destroy_store);
static struct attribute *fcoe_bus_attrs[] = {
&bus_attr_ctlr_create.attr,
&bus_attr_ctlr_destroy.attr,
NULL,
};
ATTRIBUTE_GROUPS(fcoe_bus);
static struct bus_type fcoe_bus_type = {
.name = "fcoe",
.match = &fcoe_bus_match,
.bus_groups = fcoe_bus_groups,
};
/**
* fcoe_ctlr_device_flush_work() - Flush a FIP ctlr's workqueue
* @ctlr: Pointer to the FIP ctlr whose workqueue is to be flushed
*/
static void fcoe_ctlr_device_flush_work(struct fcoe_ctlr_device *ctlr)
{
if (!fcoe_ctlr_work_q(ctlr)) {
printk(KERN_ERR
"ERROR: FIP Ctlr '%d' attempted to flush work, "
"when no workqueue created.\n", ctlr->id);
dump_stack();
return;
}
flush_workqueue(fcoe_ctlr_work_q(ctlr));
}
/**
* fcoe_ctlr_device_queue_work() - Schedule work for a FIP ctlr's workqueue
* @ctlr: Pointer to the FIP ctlr who owns the devloss workqueue
* @work: Work to queue for execution
*
* Return value:
* 1 on success / 0 already queued / < 0 for error
*/
static int fcoe_ctlr_device_queue_work(struct fcoe_ctlr_device *ctlr,
struct work_struct *work)
{
if (unlikely(!fcoe_ctlr_work_q(ctlr))) {
printk(KERN_ERR
"ERROR: FIP Ctlr '%d' attempted to queue work, "
"when no workqueue created.\n", ctlr->id);
dump_stack();
return -EINVAL;
}
return queue_work(fcoe_ctlr_work_q(ctlr), work);
}
/**
* fcoe_ctlr_device_flush_devloss() - Flush a FIP ctlr's devloss workqueue
* @ctlr: Pointer to FIP ctlr whose workqueue is to be flushed
*/
static void fcoe_ctlr_device_flush_devloss(struct fcoe_ctlr_device *ctlr)
{
if (!fcoe_ctlr_devloss_work_q(ctlr)) {
printk(KERN_ERR
"ERROR: FIP Ctlr '%d' attempted to flush work, "
"when no workqueue created.\n", ctlr->id);
dump_stack();
return;
}
flush_workqueue(fcoe_ctlr_devloss_work_q(ctlr));
}
/**
* fcoe_ctlr_device_queue_devloss_work() - Schedule work for a FIP ctlr's devloss workqueue
* @ctlr: Pointer to the FIP ctlr who owns the devloss workqueue
* @work: Work to queue for execution
* @delay: jiffies to delay the work queuing
*
* Return value:
* 1 on success / 0 already queued / < 0 for error
*/
static int fcoe_ctlr_device_queue_devloss_work(struct fcoe_ctlr_device *ctlr,
struct delayed_work *work,
unsigned long delay)
{
if (unlikely(!fcoe_ctlr_devloss_work_q(ctlr))) {
printk(KERN_ERR
"ERROR: FIP Ctlr '%d' attempted to queue work, "
"when no workqueue created.\n", ctlr->id);
dump_stack();
return -EINVAL;
}
return queue_delayed_work(fcoe_ctlr_devloss_work_q(ctlr), work, delay);
}
static int fcoe_fcf_device_match(struct fcoe_fcf_device *new,
struct fcoe_fcf_device *old)
{
if (new->switch_name == old->switch_name &&
new->fabric_name == old->fabric_name &&
new->fc_map == old->fc_map &&
ether_addr_equal(new->mac, old->mac))
return 1;
return 0;
}
/**
* fcoe_ctlr_device_add() - Add a FIP ctlr to sysfs
* @parent: The parent device to which the fcoe_ctlr instance
* should be attached
* @f: The LLD's FCoE sysfs function template pointer
* @priv_size: Size to be allocated with the fcoe_ctlr_device for the LLD
*
* This routine allocates a FIP ctlr object with some additional memory
* for the LLD. The FIP ctlr is initialized, added to sysfs and then
* attributes are added to it.
*/
struct fcoe_ctlr_device *fcoe_ctlr_device_add(struct device *parent,
struct fcoe_sysfs_function_template *f,
int priv_size)
{
struct fcoe_ctlr_device *ctlr;
int error = 0;
ctlr = kzalloc(sizeof(struct fcoe_ctlr_device) + priv_size,
GFP_KERNEL);
if (!ctlr)
goto out;
ctlr->id = atomic_inc_return(&ctlr_num) - 1;
ctlr->f = f;
ctlr->mode = FIP_CONN_TYPE_FABRIC;
INIT_LIST_HEAD(&ctlr->fcfs);
mutex_init(&ctlr->lock);
ctlr->dev.parent = parent;
ctlr->dev.bus = &fcoe_bus_type;
ctlr->dev.type = &fcoe_ctlr_device_type;
ctlr->fcf_dev_loss_tmo = fcoe_fcf_dev_loss_tmo;
snprintf(ctlr->work_q_name, sizeof(ctlr->work_q_name),
"ctlr_wq_%d", ctlr->id);
ctlr->work_q = create_singlethread_workqueue(
ctlr->work_q_name);
if (!ctlr->work_q)
goto out_del;
snprintf(ctlr->devloss_work_q_name,
sizeof(ctlr->devloss_work_q_name),
"ctlr_dl_wq_%d", ctlr->id);
ctlr->devloss_work_q = create_singlethread_workqueue(
ctlr->devloss_work_q_name);
if (!ctlr->devloss_work_q)
goto out_del_q;
dev_set_name(&ctlr->dev, "ctlr_%d", ctlr->id);
error = device_register(&ctlr->dev);
if (error) {
destroy_workqueue(ctlr->devloss_work_q);
destroy_workqueue(ctlr->work_q);
put_device(&ctlr->dev);
return NULL;
}
return ctlr;
out_del_q:
destroy_workqueue(ctlr->work_q);
ctlr->work_q = NULL;
out_del:
kfree(ctlr);
out:
return NULL;
}
EXPORT_SYMBOL_GPL(fcoe_ctlr_device_add);
/**
* fcoe_ctlr_device_delete() - Delete a FIP ctlr and its subtree from sysfs
* @ctlr: A pointer to the ctlr to be deleted
*
* Deletes a FIP ctlr and any fcfs attached
* to it. Deleting fcfs will cause their childen
* to be deleted as well.
*
* The ctlr is detached from sysfs and it's resources
* are freed (work q), but the memory is not freed
* until its last reference is released.
*
* This routine expects no locks to be held before
* calling.
*
* TODO: Currently there are no callbacks to clean up LLD data
* for a fcoe_fcf_device. LLDs must keep this in mind as they need
* to clean up each of their LLD data for all fcoe_fcf_device before
* calling fcoe_ctlr_device_delete.
*/
void fcoe_ctlr_device_delete(struct fcoe_ctlr_device *ctlr)
{
struct fcoe_fcf_device *fcf, *next;
/* Remove any attached fcfs */
mutex_lock(&ctlr->lock);
list_for_each_entry_safe(fcf, next,
&ctlr->fcfs, peers) {
list_del(&fcf->peers);
fcf->state = FCOE_FCF_STATE_DELETED;
fcoe_ctlr_device_queue_work(ctlr, &fcf->delete_work);
}
mutex_unlock(&ctlr->lock);
fcoe_ctlr_device_flush_work(ctlr);
destroy_workqueue(ctlr->devloss_work_q);
ctlr->devloss_work_q = NULL;
destroy_workqueue(ctlr->work_q);
ctlr->work_q = NULL;
device_unregister(&ctlr->dev);
}
EXPORT_SYMBOL_GPL(fcoe_ctlr_device_delete);
/**
* fcoe_fcf_device_final_delete() - Final delete routine
* @work: The FIP fcf's embedded work struct
*
* It is expected that the fcf has been removed from
* the FIP ctlr's list before calling this routine.
*/
static void fcoe_fcf_device_final_delete(struct work_struct *work)
{
struct fcoe_fcf_device *fcf =
container_of(work, struct fcoe_fcf_device, delete_work);
struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf);
/*
* Cancel any outstanding timers. These should really exist
* only when rmmod'ing the LLDD and we're asking for
* immediate termination of the rports
*/
if (!cancel_delayed_work(&fcf->dev_loss_work))
fcoe_ctlr_device_flush_devloss(ctlr);
device_unregister(&fcf->dev);
}
/**
* fip_timeout_deleted_fcf() - Delete a fcf when the devloss timer fires
* @work: The FIP fcf's embedded work struct
*
* Removes the fcf from the FIP ctlr's list of fcfs and
* queues the final deletion.
*/
static void fip_timeout_deleted_fcf(struct work_struct *work)
{
struct fcoe_fcf_device *fcf =
container_of(work, struct fcoe_fcf_device, dev_loss_work.work);
struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf);
mutex_lock(&ctlr->lock);
/*
* If the fcf is deleted or reconnected before the timer
* fires the devloss queue will be flushed, but the state will
* either be CONNECTED or DELETED. If that is the case we
* cancel deleting the fcf.
*/
if (fcf->state != FCOE_FCF_STATE_DISCONNECTED)
goto out;
dev_printk(KERN_ERR, &fcf->dev,
"FIP fcf connection time out: removing fcf\n");
list_del(&fcf->peers);
fcf->state = FCOE_FCF_STATE_DELETED;
fcoe_ctlr_device_queue_work(ctlr, &fcf->delete_work);
out:
mutex_unlock(&ctlr->lock);
}
/**
* fcoe_fcf_device_delete() - Delete a FIP fcf
* @fcf: Pointer to the fcf which is to be deleted
*
* Queues the FIP fcf on the devloss workqueue
*
* Expects the ctlr_attrs mutex to be held for fcf
* state change.
*/
void fcoe_fcf_device_delete(struct fcoe_fcf_device *fcf)
{
struct fcoe_ctlr_device *ctlr = fcoe_fcf_dev_to_ctlr_dev(fcf);
int timeout = fcf->dev_loss_tmo;
if (fcf->state != FCOE_FCF_STATE_CONNECTED)
return;
fcf->state = FCOE_FCF_STATE_DISCONNECTED;
/*
* FCF will only be re-connected by the LLD calling
* fcoe_fcf_device_add, and it should be setting up
* priv then.
*/
fcf->priv = NULL;
fcoe_ctlr_device_queue_devloss_work(ctlr, &fcf->dev_loss_work,
timeout * HZ);
}
EXPORT_SYMBOL_GPL(fcoe_fcf_device_delete);
/**
* fcoe_fcf_device_add() - Add a FCoE sysfs fcoe_fcf_device to the system
* @ctlr: The fcoe_ctlr_device that will be the fcoe_fcf_device parent
* @new_fcf: A temporary FCF used for lookups on the current list of fcfs
*
* Expects to be called with the ctlr->lock held
*/
struct fcoe_fcf_device *fcoe_fcf_device_add(struct fcoe_ctlr_device *ctlr,
struct fcoe_fcf_device *new_fcf)
{
struct fcoe_fcf_device *fcf;
int error = 0;
list_for_each_entry(fcf, &ctlr->fcfs, peers) {
if (fcoe_fcf_device_match(new_fcf, fcf)) {
if (fcf->state == FCOE_FCF_STATE_CONNECTED)
return fcf;
fcf->state = FCOE_FCF_STATE_CONNECTED;
if (!cancel_delayed_work(&fcf->dev_loss_work))
fcoe_ctlr_device_flush_devloss(ctlr);
return fcf;
}
}
fcf = kzalloc(sizeof(struct fcoe_fcf_device), GFP_ATOMIC);
if (unlikely(!fcf))
goto out;
INIT_WORK(&fcf->delete_work, fcoe_fcf_device_final_delete);
INIT_DELAYED_WORK(&fcf->dev_loss_work, fip_timeout_deleted_fcf);
fcf->dev.parent = &ctlr->dev;
fcf->dev.bus = &fcoe_bus_type;
fcf->dev.type = &fcoe_fcf_device_type;
fcf->id = atomic_inc_return(&fcf_num) - 1;
fcf->state = FCOE_FCF_STATE_UNKNOWN;
fcf->dev_loss_tmo = ctlr->fcf_dev_loss_tmo;
dev_set_name(&fcf->dev, "fcf_%d", fcf->id);
fcf->fabric_name = new_fcf->fabric_name;
fcf->switch_name = new_fcf->switch_name;
fcf->fc_map = new_fcf->fc_map;
fcf->vfid = new_fcf->vfid;
memcpy(fcf->mac, new_fcf->mac, ETH_ALEN);
fcf->priority = new_fcf->priority;
fcf->fka_period = new_fcf->fka_period;
fcf->selected = new_fcf->selected;
error = device_register(&fcf->dev);
if (error) {
put_device(&fcf->dev);
goto out;
}
fcf->state = FCOE_FCF_STATE_CONNECTED;
list_add_tail(&fcf->peers, &ctlr->fcfs);
return fcf;
out:
return NULL;
}
EXPORT_SYMBOL_GPL(fcoe_fcf_device_add);
int __init fcoe_sysfs_setup(void)
{
int error;
atomic_set(&ctlr_num, 0);
atomic_set(&fcf_num, 0);
error = bus_register(&fcoe_bus_type);
if (error)
return error;
return 0;
}
void __exit fcoe_sysfs_teardown(void)
{
bus_unregister(&fcoe_bus_type);
}