target/linux/brcm2708/patches-4.4/0059-Allow-mac-address-to-be-set-in-smsc95xx.patch

   1 From 6c0a9150827dc58fac38c8e787c050626325842e Mon Sep 17 00:00:00 2001
   2 From: popcornmix <popcornmix@gmail.com>
   3 Date: Tue, 26 Mar 2013 17:26:38 +0000
   4 Subject: [PATCH 059/170] Allow mac address to be set in smsc95xx
   5
   6 Signed-off-by: popcornmix <popcornmix@gmail.com>
   7 ---
   8  drivers/net/usb/smsc95xx.c | 56 ++++++++++++++++++++++++++++++++++++++++++++++
   9  1 file changed, 56 insertions(+)
  10
  11 --- a/drivers/net/usb/smsc95xx.c
  12 +++ b/drivers/net/usb/smsc95xx.c
  13 @@ -59,6 +59,7 @@
  14  #define SUSPEND_SUSPEND3               (0x08)
  15  #define SUSPEND_ALLMODES               (SUSPEND_SUSPEND0 | SUSPEND_SUSPEND1 | \
  16                                          SUSPEND_SUSPEND2 | SUSPEND_SUSPEND3)
  17 +#define MAC_ADDR_LEN                    (6)
  18
  19  struct smsc95xx_priv {
  20         u32 mac_cr;
  21 @@ -74,6 +75,10 @@ static bool turbo_mode = false;
  22  module_param(turbo_mode, bool, 0644);
  23  MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
  24
  25 +static char *macaddr = ":";
  26 +module_param(macaddr, charp, 0);
  27 +MODULE_PARM_DESC(macaddr, "MAC address");
  28 +
  29  static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
  30                                             u32 *data, int in_pm)
  31  {
  32 @@ -763,8 +768,59 @@ static int smsc95xx_ioctl(struct net_dev
  33         return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL);
  34  }
  35
  36 +/* Check the macaddr module parameter for a MAC address */
  37 +static int smsc95xx_is_macaddr_param(struct usbnet *dev, u8 *dev_mac)
  38 +{
  39 +       int i, j, got_num, num;
  40 +       u8 mtbl[MAC_ADDR_LEN];
  41 +
  42 +       if (macaddr[0] == ':')
  43 +               return 0;
  44 +
  45 +       i = 0;
  46 +       j = 0;
  47 +       num = 0;
  48 +       got_num = 0;
  49 +       while (j < MAC_ADDR_LEN) {
  50 +               if (macaddr[i] && macaddr[i] != ':') {
  51 +                       got_num++;
  52 +                       if ('0' <= macaddr[i] && macaddr[i] <= '9')
  53 +                               num = num * 16 + macaddr[i] - '0';
  54 +                       else if ('A' <= macaddr[i] && macaddr[i] <= 'F')
  55 +                               num = num * 16 + 10 + macaddr[i] - 'A';
  56 +                       else if ('a' <= macaddr[i] && macaddr[i] <= 'f')
  57 +                               num = num * 16 + 10 + macaddr[i] - 'a';
  58 +                       else
  59 +                               break;
  60 +                       i++;
  61 +               } else if (got_num == 2) {
  62 +                       mtbl[j++] = (u8) num;
  63 +                       num = 0;
  64 +                       got_num = 0;
  65 +                       i++;
  66 +               } else {
  67 +                       break;
  68 +               }
  69 +       }
  70 +
  71 +       if (j == MAC_ADDR_LEN) {
  72 +               netif_dbg(dev, ifup, dev->net, "Overriding MAC address with: "
  73 +               "%02x:%02x:%02x:%02x:%02x:%02x\n", mtbl[0], mtbl[1], mtbl[2],
  74 +                                               mtbl[3], mtbl[4], mtbl[5]);
  75 +               for (i = 0; i < MAC_ADDR_LEN; i++)
  76 +                       dev_mac[i] = mtbl[i];
  77 +               return 1;
  78 +       } else {
  79 +               return 0;
  80 +       }
  81 +}
  82 +
  83  static void smsc95xx_init_mac_address(struct usbnet *dev)
  84  {
  85 +       /* Check module parameters */
  86 +       if (smsc95xx_is_macaddr_param(dev, dev->net->dev_addr))
  87 +               return;
  88 +
  89         /* try reading mac address from EEPROM */
  90         if (smsc95xx_read_eeprom(dev, EEPROM_MAC_OFFSET, ETH_ALEN,
  91                         dev->net->dev_addr) == 0) {