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| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2021-01-12 19:26:13 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-01-20 14:10:35 -0800 |
| commit | 89f479f0eccfc879e7bc0a69f44ed4a4639dfc32 (patch) | |
| tree | 77c1f24da42e76c19c1267ea2d78ba7d0439cde2 /net/core | |
| parent | 97a0e1ea7b41c2db762c1258632f6ccc22719510 (diff) | |
| download | linux-89f479f0eccfc879e7bc0a69f44ed4a4639dfc32.tar.gz linux-89f479f0eccfc879e7bc0a69f44ed4a4639dfc32.tar.bz2 linux-89f479f0eccfc879e7bc0a69f44ed4a4639dfc32.zip | |
net, xdp: Introduce xdp_build_skb_from_frame utility routine
Introduce xdp_build_skb_from_frame utility routine to build the skb
from xdp_frame. Respect to __xdp_build_skb_from_frame,
xdp_build_skb_from_frame will allocate the skb object. Rely on
xdp_build_skb_from_frame in veth driver.
Introduce missing xdp metadata support in veth_xdp_rcv_one routine.
Add missing metadata support in veth_xdp_rcv_one().
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Toshiaki Makita <toshiaki.makita1@gmail.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Link: https://lore.kernel.org/bpf/94ade9e853162ae1947941965193190da97457bc.1610475660.git.lorenzo@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/xdp.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/net/core/xdp.c b/net/core/xdp.c index aeb09ed0704c..0d2630a35c3e 100644 --- a/net/core/xdp.c +++ b/net/core/xdp.c @@ -557,3 +557,18 @@ struct sk_buff *__xdp_build_skb_from_frame(struct xdp_frame *xdpf, return skb; } EXPORT_SYMBOL_GPL(__xdp_build_skb_from_frame); + +struct sk_buff *xdp_build_skb_from_frame(struct xdp_frame *xdpf, + struct net_device *dev) +{ + struct sk_buff *skb; + + skb = kmem_cache_alloc(skbuff_head_cache, GFP_ATOMIC); + if (unlikely(!skb)) + return NULL; + + memset(skb, 0, offsetof(struct sk_buff, tail)); + + return __xdp_build_skb_from_frame(xdpf, skb, dev); +} +EXPORT_SYMBOL_GPL(xdp_build_skb_from_frame); |