diff options
| author | Jesper Dangaard Brouer <brouer@redhat.com> | 2023-04-12 21:48:50 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2023-04-13 11:15:10 -0700 |
| commit | 96b1a098f3db06223a6b6268e756f980d5c07f10 (patch) | |
| tree | 27458edf4d91e5a6cc500bc048d2b48977b5d7d7 | |
| parent | 67f245c2ec0af17d7a90c78910e28bc8b206297c (diff) | |
| download | linux-96b1a098f3db06223a6b6268e756f980d5c07f10.tar.gz | |
veth: bpf_xdp_metadata_rx_hash add xdp rss hash type
Update API for bpf_xdp_metadata_rx_hash() with arg for xdp rss hash type.
The veth driver currently only support XDP-hints based on SKB code path.
The SKB have lost information about the RSS hash type, by compressing
the information down to a single bitfield skb->l4_hash, that only knows
if this was a L4 hash value.
In preparation for veth, the xdp_rss_hash_type have an L4 indication
bit that allow us to return a meaningful L4 indication when working
with SKB based packets.
Fixes: 306531f0249f ("veth: Support RX XDP metadata")
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Acked-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/168132893055.340624.16209448340644513469.stgit@firesoul
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
| -rw-r--r-- | drivers/net/veth.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/veth.c b/drivers/net/veth.c index 424e8876a16b6..e1b38fbf1dd95 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -1652,11 +1652,14 @@ static int veth_xdp_rx_hash(const struct xdp_md *ctx, u32 *hash, enum xdp_rss_hash_type *rss_type) { struct veth_xdp_buff *_ctx = (void *)ctx; + struct sk_buff *skb = _ctx->skb; - if (!_ctx->skb) + if (!skb) return -ENODATA; - *hash = skb_get_hash(_ctx->skb); + *hash = skb_get_hash(skb); + *rss_type = skb->l4_hash ? XDP_RSS_TYPE_L4_ANY : XDP_RSS_TYPE_NONE; + return 0; } |