drivers/net/sandbox-raw-bus.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2018 National Instruments
   4  * Copyright (c) 2018 Joe Hershberger <joe.hershberger@ni.com>
   5  */
   6
   7 #include <common.h>
   8 #include <asm/eth-raw-os.h>
   9 #include <dm.h>
  10 #include <errno.h>
  11 #include <malloc.h>
  12 #include <dm/device-internal.h>
  13 #include <dm/lists.h>
  14
  15 static int eth_raw_bus_post_bind(struct udevice *dev)
  16 {
  17         struct sandbox_eth_raw_if_nameindex *ni, *i;
  18         struct udevice *child;
  19         struct eth_sandbox_raw_priv *priv;
  20         char *ub_ifname;
  21         static const char ub_ifname_pfx[] = "host_";
  22         u32 skip_localhost = 0;
  23
  24         ni = sandbox_eth_raw_if_nameindex();
  25         if (!ni)
  26                 return -EINVAL;
  27
  28         dev_read_u32(dev, "skip-localhost", &skip_localhost);
  29         for (i = ni; !(i->if_index == 0 && !i->if_name); i++) {
  30                 int local = sandbox_eth_raw_os_is_local(i->if_name);
  31
  32                 if (local < 0)
  33                         continue;
  34                 if (skip_localhost && local)
  35                         continue;
  36
  37                 ub_ifname = calloc(IFNAMSIZ + sizeof(ub_ifname_pfx), 1);
  38                 strcpy(ub_ifname, ub_ifname_pfx);
  39                 strncat(ub_ifname, i->if_name, IFNAMSIZ);
  40                 device_bind_driver(dev, "eth_sandbox_raw", ub_ifname, &child);
  41
  42                 device_set_name_alloced(child);
  43                 device_probe(child);
  44                 priv = dev_get_priv(child);
  45                 if (priv) {
  46                         strcpy(priv->host_ifname, i->if_name);
  47                         priv->host_ifindex = i->if_index;
  48                         priv->local = local;
  49                 }
  50         }
  51
  52         sandbox_eth_raw_if_freenameindex(ni);
  53
  54         return 0;
  55 }
  56
  57 static const struct udevice_id sandbox_eth_raw_bus_ids[] = {
  58         { .compatible = "sandbox,eth-raw-bus" },
  59         { }
  60 };
  61
  62 U_BOOT_DRIVER(sandbox_eth_raw_bus) = {
  63         .name       = "sb_eth_raw_bus",
  64         .id         = UCLASS_SIMPLE_BUS,
  65         .of_match   = sandbox_eth_raw_bus_ids,
  66         .bind       = eth_raw_bus_post_bind,
  67 };