diff options
| author | David S. Miller <davem@davemloft.net> | 2018-02-21 14:24:15 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-02-21 14:24:15 -0500 |
| commit | 53e20678a1eb12fdae615a018919d137d7e9cfa2 (patch) | |
| tree | fdee55dc628e78ddae4acbb7f1e97821aae779ae /include/net/sock.h | |
| parent | 960103ff8dd176511d3735d22c14fb0a5ce3183e (diff) | |
| parent | 98be9b12096fb46773b4a509d3822fd17c82218e (diff) | |
Merge branch 'tcp-remove-non-GSO-code'
Eric Dumazet says:
====================
tcp: remove non GSO code
Switching TCP to GSO mode, relying on core networking layers
to perform eventual adaptation for dumb devices was overdue.
1) Most TCP developments are done with TSO in mind.
2) Less high-resolution timers needs to be armed for TCP-pacing
3) GSO can benefit of xmit_more hint
4) Receiver GRO is more effective (as if TSO was used for real on sender)
-> less ACK packets and overhead.
5) Write queues have less overhead (one skb holds about 64KB of payload)
6) SACK coalescing just works. (no payload in skb->head)
7) rtx rb-tree contains less packets, SACK is cheaper.
8) Removal of legacy code. Less maintenance hassles.
Note that I have left the sendpage/zerocopy paths, but they probably can
benefit from the same strategy.
Thanks to Oleksandr Natalenko for reporting a performance issue for BBR/fq_codel,
which was the main reason I worked on this patch series.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sock.h')
| -rw-r--r-- | include/net/sock.h | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/include/net/sock.h b/include/net/sock.h index 3aa7b7d6e6c7..b9624581d639 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -417,6 +417,7 @@ struct sock { struct page_frag sk_frag; netdev_features_t sk_route_caps; netdev_features_t sk_route_nocaps; + netdev_features_t sk_route_forced_caps; int sk_gso_type; unsigned int sk_gso_max_size; gfp_t sk_allocation; @@ -1862,15 +1863,6 @@ static inline void sk_nocaps_add(struct sock *sk, netdev_features_t flags) sk->sk_route_caps &= ~flags; } -static inline bool sk_check_csum_caps(struct sock *sk) -{ - return (sk->sk_route_caps & NETIF_F_HW_CSUM) || - (sk->sk_family == PF_INET && - (sk->sk_route_caps & NETIF_F_IP_CSUM)) || - (sk->sk_family == PF_INET6 && - (sk->sk_route_caps & NETIF_F_IPV6_CSUM)); -} - static inline int skb_do_copy_data_nocache(struct sock *sk, struct sk_buff *skb, struct iov_iter *from, char *to, int copy, int offset) |