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openwrt/target/linux/bcm27xx/patches-6.6/950-1131-Allow-mac-address-to-be-set-in-smsc95xx.patch
Álvaro Fernández Rojas 8c405cdccc bcm27xx: add 6.6 kernel patches
The patches were generated from the RPi repo with the following command:
git format-patch v6.6.34..rpi-6.1.y

Some patches needed rebasing and, as usual, the applied and reverted, wireless
drivers, Github workflows, READMEs and defconfigs patches were removed.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2024-06-18 18:52:49 +02:00

73 lines
2.2 KiB
Diff

From 51c5d2bb01d3a0cff31d00686f35ed8f33039f78 Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Tue, 26 Mar 2013 17:26:38 +0000
Subject: [PATCH 1131/1135] Allow mac address to be set in smsc95xx
Signed-off-by: popcornmix <popcornmix@gmail.com>
SQUASH: smsc95xx: Use dev_mod_addr to set MAC addr
Since adeef3e32146 ("net: constify netdev->dev_addr") it has been
illegal to write to the dev_addr MAC address field. Later commits
have added explicit checks that it hasn't been modified by nefarious
means. The dev_addr_mod helper function is the accepted way to change
the dev_addr field, so use it.
Squash with 96c1def63ee1 ("Allow mac address to be set in smsc95xx").
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
drivers/net/usb/smsc95xx.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -83,6 +83,10 @@ static int packetsize = 2560;
module_param(packetsize, int, 0644);
MODULE_PARM_DESC(packetsize, "Override the RX URB packet size");
+static char *macaddr = ":";
+module_param(macaddr, charp, 0);
+MODULE_PARM_DESC(macaddr, "MAC address");
+
static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index,
u32 *data)
{
@@ -805,6 +809,21 @@ static int smsc95xx_ioctl(struct net_dev
return phy_mii_ioctl(netdev->phydev, rq, cmd);
}
+/* Check the macaddr module parameter for a MAC address */
+static int smsc95xx_macaddr_param(struct usbnet *dev, struct net_device *nd)
+{
+ u8 mtbl[ETH_ALEN];
+
+ if (mac_pton(macaddr, mtbl)) {
+ netif_dbg(dev, ifup, dev->net,
+ "Overriding MAC address with: %pM\n", mtbl);
+ dev_addr_mod(nd, 0, mtbl, ETH_ALEN);
+ return 0;
+ } else {
+ return -EINVAL;
+ }
+}
+
static void smsc95xx_init_mac_address(struct usbnet *dev)
{
u8 addr[ETH_ALEN];
@@ -827,6 +846,14 @@ static void smsc95xx_init_mac_address(st
return;
}
}
+
+ /* Check module parameters */
+ if (smsc95xx_macaddr_param(dev, dev->net) == 0) {
+ if (is_valid_ether_addr(dev->net->dev_addr)) {
+ netif_dbg(dev, ifup, dev->net, "MAC address read from module parameter\n");
+ return;
+ }
+ }
/* no useful static MAC address found. generate a random one */
eth_hw_addr_random(dev->net);