diff options
| author | Paolo Abeni <pabeni@redhat.com> | 2024-03-05 15:30:15 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-03-05 15:30:16 +0300 |
| commit | d35c9659e56edd9e629b54da8ceca062517d3d6c (patch) | |
| tree | de9c27dd1b0accf927ed319cde55e2c130fe0060 /net/ipv4/tcp_offload.c | |
| parent | 9452c8b459f4641156a09c2212a835a6df2a137e (diff) | |
| parent | 8f78010b701d8fdc290063f29fefc09aaaca4085 (diff) | |
| download | linux-d35c9659e56edd9e629b54da8ceca062517d3d6c.tar.xz | |
Merge branch 'net-gro-cleanups-and-fast-path-refinement'
Eric Dumazet says:
====================
net: gro: cleanups and fast path refinement
Current GRO stack has a 'fast path' for a subset of drivers,
users of napi_frags_skb().
With TCP zerocopy/direct uses, header split at receive is becoming
more important, and GRO fast path is disabled.
This series makes GRO (a bit) more efficient for almost all use cases.
====================
Link: https://lore.kernel.org/r/20240301193740.3436871-1-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/ipv4/tcp_offload.c')
| -rw-r--r-- | net/ipv4/tcp_offload.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/net/ipv4/tcp_offload.c b/net/ipv4/tcp_offload.c index 8311c38267b5..b955ab3b236d 100644 --- a/net/ipv4/tcp_offload.c +++ b/net/ipv4/tcp_offload.c @@ -204,7 +204,7 @@ struct sk_buff *tcp_gro_receive(struct list_head *head, struct sk_buff *skb) goto out; hlen = off + thlen; - if (skb_gro_header_hard(skb, hlen)) { + if (!skb_gro_may_pull(skb, hlen)) { th = skb_gro_header_slow(skb, hlen, off); if (unlikely(!th)) goto out; @@ -299,18 +299,20 @@ out: void tcp_gro_complete(struct sk_buff *skb) { struct tcphdr *th = tcp_hdr(skb); + struct skb_shared_info *shinfo; + + if (skb->encapsulation) + skb->inner_transport_header = skb->transport_header; skb->csum_start = (unsigned char *)th - skb->head; skb->csum_offset = offsetof(struct tcphdr, check); skb->ip_summed = CHECKSUM_PARTIAL; - skb_shinfo(skb)->gso_segs = NAPI_GRO_CB(skb)->count; + shinfo = skb_shinfo(skb); + shinfo->gso_segs = NAPI_GRO_CB(skb)->count; if (th->cwr) - skb_shinfo(skb)->gso_type |= SKB_GSO_TCP_ECN; - - if (skb->encapsulation) - skb->inner_transport_header = skb->transport_header; + shinfo->gso_type |= SKB_GSO_TCP_ECN; } EXPORT_SYMBOL(tcp_gro_complete); @@ -335,10 +337,9 @@ INDIRECT_CALLABLE_SCOPE int tcp4_gro_complete(struct sk_buff *skb, int thoff) th->check = ~tcp_v4_check(skb->len - thoff, iph->saddr, iph->daddr, 0); - skb_shinfo(skb)->gso_type |= SKB_GSO_TCPV4; - if (NAPI_GRO_CB(skb)->is_atomic) - skb_shinfo(skb)->gso_type |= SKB_GSO_TCP_FIXEDID; + skb_shinfo(skb)->gso_type |= SKB_GSO_TCPV4 | + (NAPI_GRO_CB(skb)->is_atomic * SKB_GSO_TCP_FIXEDID); tcp_gro_complete(skb); return 0; |