diff options
| author | Felix Fietkau <nbd@nbd.name> | 2024-05-02 11:44:44 +0300 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-05-06 12:54:04 +0300 |
| commit | 8d95dc474f85481652a0e422d2f1f079de81f63c (patch) | |
| tree | 7aff58088ce498cc84374e66625847d2772ad794 | |
| parent | bee88cd5bd83d40b8aec4d6cb729378f707f6197 (diff) | |
| download | linux-8d95dc474f85481652a0e422d2f1f079de81f63c.tar.xz | |
net: add code for TCP fraglist GRO
This implements fraglist GRO similar to how it's handled in UDP, however
no functional changes are added yet. The next change adds a heuristic for
using fraglist GRO instead of regular GRO.
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | net/ipv4/tcp_offload.c | 21 | ||||
| -rw-r--r-- | net/ipv6/tcpv6_offload.c | 9 |
2 files changed, 30 insertions, 0 deletions
diff --git a/net/ipv4/tcp_offload.c b/net/ipv4/tcp_offload.c index affd4ed28cfe..aa7508676315 100644 --- a/net/ipv4/tcp_offload.c +++ b/net/ipv4/tcp_offload.c @@ -334,6 +334,18 @@ found: flush |= (ntohl(th2->seq) + skb_gro_len(p)) ^ ntohl(th->seq); flush |= skb_cmp_decrypted(p, skb); + if (unlikely(NAPI_GRO_CB(p)->is_flist)) { + flush |= (__force int)(flags ^ tcp_flag_word(th2)); + flush |= skb->ip_summed != p->ip_summed; + flush |= skb->csum_level != p->csum_level; + flush |= NAPI_GRO_CB(p)->count >= 64; + + if (flush || skb_gro_receive_list(p, skb)) + mss = 1; + + goto out_check_final; + } + if (flush || skb_gro_receive(p, skb)) { mss = 1; goto out_check_final; @@ -400,6 +412,15 @@ INDIRECT_CALLABLE_SCOPE int tcp4_gro_complete(struct sk_buff *skb, int thoff) const struct iphdr *iph = ip_hdr(skb); struct tcphdr *th = tcp_hdr(skb); + if (unlikely(NAPI_GRO_CB(skb)->is_flist)) { + skb_shinfo(skb)->gso_type |= SKB_GSO_FRAGLIST | SKB_GSO_TCPV4; + skb_shinfo(skb)->gso_segs = NAPI_GRO_CB(skb)->count; + + __skb_incr_checksum_unnecessary(skb); + + return 0; + } + th->check = ~tcp_v4_check(skb->len - thoff, iph->saddr, iph->daddr, 0); diff --git a/net/ipv6/tcpv6_offload.c b/net/ipv6/tcpv6_offload.c index 7180c30dbbef..575e2743e331 100644 --- a/net/ipv6/tcpv6_offload.c +++ b/net/ipv6/tcpv6_offload.c @@ -32,6 +32,15 @@ INDIRECT_CALLABLE_SCOPE int tcp6_gro_complete(struct sk_buff *skb, int thoff) const struct ipv6hdr *iph = ipv6_hdr(skb); struct tcphdr *th = tcp_hdr(skb); + if (unlikely(NAPI_GRO_CB(skb)->is_flist)) { + skb_shinfo(skb)->gso_type |= SKB_GSO_FRAGLIST | SKB_GSO_TCPV6; + skb_shinfo(skb)->gso_segs = NAPI_GRO_CB(skb)->count; + + __skb_incr_checksum_unnecessary(skb); + + return 0; + } + th->check = ~tcp_v6_check(skb->len - thoff, &iph->saddr, &iph->daddr, 0); skb_shinfo(skb)->gso_type |= SKB_GSO_TCPV6; |