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author | Sascha Hauer <s.hauer@pengutronix.de> | 2017-11-28 10:56:30 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2017-12-15 08:12:30 +0100 |
commit | ac7b6bcb7ef5abe5d5f6b2a64453080b7994a6eb (patch) | |
tree | ded58d04765124269d40b7f8c6e08f33850e0606 | |
parent | dd36203979331fdcfc8196cf671cfff8ce71cd15 (diff) | |
download | barebox-ac7b6bcb7ef5abe5d5f6b2a64453080b7994a6eb.tar.gz barebox-ac7b6bcb7ef5abe5d5f6b2a64453080b7994a6eb.tar.xz |
net: Add linuxdevname property
When you have a static network environment but more than one network
device on your machine it is necessary to provide the <device> parameter
to the ip parameter at kernel cmd line.
The device name assigned by Linux cannot in general be predicted as it
depends on driver bind order.
This patch introduces a new property linux.devname to eth devices.
The value is added to bootargs per interface and can be changed in
env/network/INTF
Based on patch by Gavin Schenk <g.schenk@eckelmann.de>.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r-- | include/net.h | 1 | ||||
-rw-r--r-- | net/eth.c | 2 | ||||
-rw-r--r-- | net/ifup.c | 14 |
3 files changed, 14 insertions, 3 deletions
diff --git a/include/net.h b/include/net.h index 926d817802..a09cb155a8 100644 --- a/include/net.h +++ b/include/net.h @@ -61,6 +61,7 @@ struct eth_device { IPaddr_t netmask; char ethaddr[6]; char *bootarg; + char *linuxdevname; bool ifup; #define ETH_MODE_DHCP 0 @@ -390,6 +390,8 @@ int eth_register(struct eth_device *edev) edev->ethaddr, edev); edev->bootarg = xstrdup(""); dev_add_param_string(dev, "linux.bootargs", NULL, NULL, &edev->bootarg, NULL); + edev->linuxdevname = xstrdup(""); + dev_add_param_string(dev, "linux.devname", NULL, NULL, &edev->linuxdevname, NULL); dev_add_param_enum(dev, "mode", NULL, NULL, &edev->global_mode, eth_mode_names, ARRAY_SIZE(eth_mode_names), NULL); diff --git a/net/ifup.c b/net/ifup.c index dc41c47f24..827c5c03d1 100644 --- a/net/ifup.c +++ b/net/ifup.c @@ -72,11 +72,12 @@ static int source_env_network(struct eth_device *edev) "serverip", "ethaddr", "ip", + "linuxdevname", }; IPaddr_t ipaddr, netmask, gateway, serverip; unsigned char ethaddr[6]; char *file, *cmd; - const char *ethaddrstr, *modestr; + const char *ethaddrstr, *modestr, *linuxdevname; int ret, mode, ethaddr_valid = 0, i; struct stat s; @@ -107,6 +108,7 @@ static int source_env_network(struct eth_device *edev) netmask = getenv_ip("netmask"); gateway = getenv_ip("gateway"); serverip = getenv_ip("serverip"); + linuxdevname = getenv("linuxdevname"); ethaddrstr = getenv("ethaddr"); if (ethaddrstr && *ethaddrstr) { ret = string_to_ethaddr(ethaddrstr, ethaddr); @@ -149,6 +151,11 @@ static int source_env_network(struct eth_device *edev) net_set_serverip(serverip); } + if (linuxdevname) { + free(edev->linuxdevname); + edev->linuxdevname = xstrdup(linuxdevname); + } + ret = 0; out: @@ -169,11 +176,12 @@ static void set_linux_bootarg(struct eth_device *edev) serverip = net_get_serverip(); gateway = net_get_gateway(); - bootarg = basprintf("ip=%pI4:%pI4:%pI4:%pI4:::", + bootarg = basprintf("ip=%pI4:%pI4:%pI4:%pI4::%s:", &edev->ipaddr, &serverip, &gateway, - &edev->netmask); + &edev->netmask, + edev->linuxdevname ? edev->linuxdevname : ""); dev_set_param(&edev->dev, "linux.bootargs", bootarg); free(bootarg); } else if (edev->global_mode == ETH_MODE_DHCP) { |