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793f8ab62c
Add kernel patches for version 6.1. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
100 lines
3.4 KiB
Diff
100 lines
3.4 KiB
Diff
From 46f9261fd0c133038cc5adbdb91085a1791414c9 Mon Sep 17 00:00:00 2001
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From: popcornmix <popcornmix@gmail.com>
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Date: Tue, 26 Mar 2013 17:26:38 +0000
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Subject: [PATCH] Allow mac address to be set in smsc95xx
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Signed-off-by: popcornmix <popcornmix@gmail.com>
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SQUASH: smsc95xx: Use dev_mod_addr to set MAC addr
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Since adeef3e32146 ("net: constify netdev->dev_addr") it has been
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illegal to write to the dev_addr MAC address field. Later commits
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have added explicit checks that it hasn't been modified by nefarious
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means. The dev_addr_mod helper function is the accepted way to change
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the dev_addr field, so use it.
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Squash with 96c1def63ee1 ("Allow mac address to be set in smsc95xx").
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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drivers/net/usb/smsc95xx.c | 54 ++++++++++++++++++++++++++++++++++++++
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1 file changed, 54 insertions(+)
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--- a/drivers/net/usb/smsc95xx.c
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+++ b/drivers/net/usb/smsc95xx.c
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@@ -87,6 +87,10 @@ static int packetsize = 2560;
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module_param(packetsize, int, 0644);
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MODULE_PARM_DESC(packetsize, "Override the RX URB packet size");
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+static char *macaddr = ":";
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+module_param(macaddr, charp, 0);
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+MODULE_PARM_DESC(macaddr, "MAC address");
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+
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static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index,
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u32 *data)
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{
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@@ -807,6 +811,52 @@ static int smsc95xx_ioctl(struct net_dev
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return phy_mii_ioctl(netdev->phydev, rq, cmd);
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}
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+/* Check the macaddr module parameter for a MAC address */
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+static int smsc95xx_is_macaddr_param(struct usbnet *dev, struct net_device *nd)
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+{
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+ int i, j, got_num, num;
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+ u8 mtbl[ETH_ALEN];
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+
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+ if (macaddr[0] == ':')
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+ return 0;
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+
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+ i = 0;
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+ j = 0;
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+ num = 0;
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+ got_num = 0;
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+ while (j < ETH_ALEN) {
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+ if (macaddr[i] && macaddr[i] != ':') {
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+ got_num++;
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+ if ('0' <= macaddr[i] && macaddr[i] <= '9')
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+ num = num * 16 + macaddr[i] - '0';
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+ else if ('A' <= macaddr[i] && macaddr[i] <= 'F')
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+ num = num * 16 + 10 + macaddr[i] - 'A';
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+ else if ('a' <= macaddr[i] && macaddr[i] <= 'f')
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+ num = num * 16 + 10 + macaddr[i] - 'a';
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+ else
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+ break;
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+ i++;
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+ } else if (got_num == 2) {
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+ mtbl[j++] = (u8) num;
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+ num = 0;
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+ got_num = 0;
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+ i++;
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+ } else {
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+ break;
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+ }
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+ }
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+
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+ if (j == ETH_ALEN) {
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+ netif_dbg(dev, ifup, dev->net, "Overriding MAC address with: "
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+ "%02x:%02x:%02x:%02x:%02x:%02x\n", mtbl[0], mtbl[1], mtbl[2],
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+ mtbl[3], mtbl[4], mtbl[5]);
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+ dev_addr_mod(nd, 0, mtbl, ETH_ALEN);
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+ return 1;
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+ } else {
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+ return 0;
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+ }
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+}
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+
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static void smsc95xx_init_mac_address(struct usbnet *dev)
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{
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u8 addr[ETH_ALEN];
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@@ -830,6 +880,10 @@ static void smsc95xx_init_mac_address(st
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}
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}
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+ /* Check module parameters */
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+ if (smsc95xx_is_macaddr_param(dev, dev->net))
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+ return;
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+
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/* no useful static MAC address found. generate a random one */
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eth_hw_addr_random(dev->net);
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netif_dbg(dev, ifup, dev->net, "MAC address set to eth_random_addr\n");
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