From: Jesper Dangaard Brouer Date: Wed, 12 Apr 2023 19:48:50 +0000 (+0200) Subject: veth: bpf_xdp_metadata_rx_hash add xdp rss hash type X-Git-Tag: v6.6.17~5151^2^2^2~2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=96b1a098f3db06223a6b6268e756f980d5c07f10;p=platform%2Fkernel%2Flinux-rpi.git 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 Acked-by: Toke Høiland-Jørgensen Acked-by: Stanislav Fomichev Link: https://lore.kernel.org/r/168132893055.340624.16209448340644513469.stgit@firesoul Signed-off-by: Alexei Starovoitov --- diff --git a/drivers/net/veth.c b/drivers/net/veth.c index 424e887..e1b38fb 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; }