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sandbox: eth-raw: Allow interface to be specified by index

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With systemd stable interface names, eth0 will almost never exist.
Instead of using that name in the sandbox.dts, use an index.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Joe Hershberger 2018-07-02 14:47:52 -05:00
parent ac13270b49
commit c9e2caff85
3 changed files with 27 additions and 0 deletions
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7
arch/sandbox/cpu/eth-raw-os.c
View File

@ -44,6 +44,13 @@ out:
return ret;
}
int sandbox_eth_raw_os_idx_to_name(struct eth_sandbox_raw_priv *priv)
{
if (!if_indextoname(priv->host_ifindex, priv->host_ifname))
return -errno;
return 0;
}
static int _raw_packet_start(struct eth_sandbox_raw_priv *priv,
unsigned char *ethmac)
{

9
arch/sandbox/include/asm/eth-raw-os.h
View File

@ -42,6 +42,15 @@ struct eth_sandbox_raw_priv {
*/
int sandbox_eth_raw_os_is_local(const char *ifname);
/*
* Look up the name of the interface based on the ifindex populated in priv.
*
* Overwrite the host_ifname member in priv based on looking up host_ifindex
*
* returns - 0 if success, negative if error
*/
int sandbox_eth_raw_os_idx_to_name(struct eth_sandbox_raw_priv *priv);
int sandbox_eth_raw_os_start(struct eth_sandbox_raw_priv *priv,
unsigned char *ethmac);
int sandbox_eth_raw_os_send(void *packet, int length,

11
drivers/net/sandbox-raw.c
View File

@ -143,6 +143,7 @@ static int sb_eth_raw_ofdata_to_platdata(struct udevice *dev)
struct eth_sandbox_raw_priv *priv = dev_get_priv(dev);
const char *ifname;
u32 local;
int ret;
pdata->iobase = dev_read_addr(dev);
@ -151,6 +152,16 @@ static int sb_eth_raw_ofdata_to_platdata(struct udevice *dev)
strncpy(priv->host_ifname, ifname, IFNAMSIZ);
printf(": Using %s from DT\n", priv->host_ifname);
}
if (dev_read_u32(dev, "host-raw-interface-idx",
&priv->host_ifindex) < 0) {
priv->host_ifindex = 0;
} else {
ret = sandbox_eth_raw_os_idx_to_name(priv);
if (ret < 0)
return ret;
printf(": Using interface index %d from DT (%s)\n",
priv->host_ifindex, priv->host_ifname);
}
local = sandbox_eth_raw_os_is_local(priv->host_ifname);
if (local < 0)