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net: netdevice: Add operation ndo_sk_get_lower_dev
authorTariq Toukan <tariqt@nvidia.com>
Sun, 17 Jan 2021 14:59:42 +0000 (16:59 +0200)
committerJakub Kicinski <kuba@kernel.org>
Tue, 19 Jan 2021 04:48:39 +0000 (20:48 -0800)
commit719a402cf60311b1cdff3f6320abaecdcc5e46b7
tree564c3de3447ad501be5314a6d327143cb5c16e3d
parent41fb4c1ba7478fe34c7e094e124e4ee4513b9763
net: netdevice: Add operation ndo_sk_get_lower_dev

ndo_sk_get_lower_dev returns the lower netdev that corresponds to
a given socket.
Additionally, we implement a helper netdev_sk_get_lowest_dev() to get
the lowest one in chain.

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Boris Pismenny <borisp@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
include/linux/netdevice.h
net/core/dev.c