From 3fd81799ba3857fb45443bf085cd402656a90b2f Mon Sep 17 00:00:00 2001 From: Andrew Widdersheim Date: Sat, 16 Jan 2016 11:21:34 -0500 Subject: [netdevice] Add "ifname" setting Expose the network interface name (e.g. "net0") as a setting. This allows a script to obtain the name of the most recently opened network interface via ${netX/ifname}. Signed-off-by: Andrew Widdersheim Modified-by: Michael Brown Signed-off-by: Michael Brown --- src/net/netdev_settings.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'src/net') diff --git a/src/net/netdev_settings.c b/src/net/netdev_settings.c index edd4c4b9..c4fd3694 100644 --- a/src/net/netdev_settings.c +++ b/src/net/netdev_settings.c @@ -65,6 +65,11 @@ const struct setting chip_setting __setting ( SETTING_NETDEV, chip ) = { .description = "Chip", .type = &setting_type_string, }; +const struct setting ifname_setting __setting ( SETTING_NETDEV, ifname ) = { + .name = "ifname", + .description = "Interface name", + .type = &setting_type_string, +}; /** * Store MAC address setting @@ -199,6 +204,22 @@ static int netdev_fetch_chip ( struct net_device *netdev, void *data, return strlen ( chip ); } +/** + * Fetch ifname setting + * + * @v netdev Network device + * @v data Buffer to fill with setting data + * @v len Length of buffer + * @ret len Length of setting data, or negative error + */ +static int netdev_fetch_ifname ( struct net_device *netdev, void *data, + size_t len ) { + const char *ifname = netdev->name; + + strncpy ( data, ifname, len ); + return strlen ( ifname ); +} + /** A network device setting operation */ struct netdev_setting_operation { /** Setting */ @@ -229,6 +250,7 @@ static struct netdev_setting_operation netdev_setting_operations[] = { { &busloc_setting, NULL, netdev_fetch_busloc }, { &busid_setting, NULL, netdev_fetch_busid }, { &chip_setting, NULL, netdev_fetch_chip }, + { &ifname_setting, NULL, netdev_fetch_ifname }, }; /** -- cgit v1.2.3-55-g7522