diff options
| author |   David S. Miller <davem@davemloft.net> | 2021-03-30 17:06:50 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-30 17:06:50 -0700 |
| commit | df82e9c6dd8426577bf02392928c51c8e7ed30e1 (patch) | |
| tree | 77d847de135f17ddea9d6e36089f33d8e16cfaf4 /include/linux | |
| parent | ppp: deflate: Remove useless call "zlib_inflateEnd" (diff) | |
| parent | selftests: net: add UDP GRO forwarding self-tests (diff) | |
Merge branch 'udp-gro-L4'
Paolo Abeni says:
====================
udp: GRO L4 improvements
This series improves the UDP L4 - either 'forward' or 'frag_list' -
co-existence with UDP tunnel GRO, allowing the first to take place
correctly even for encapsulated UDP traffic.
The first for patches are mostly bugfixes, addressing some GRO
edge-cases when both tunnels and L4 are present, enabled and in use.
The next 3 patches avoid unneeded segmentation when UDP GRO
traffic traverses in the receive path UDP tunnels.
Finally, some self-tests are included, covering the relevant
GRO scenarios.
Even if most patches are actually bugfixes, this series is
targeting net-next, as overall it makes available a new feature.
v2 -> v3:
- no code changes, more verbose commit messages and comment in
patch 1/8
v1 -> v2:
- restrict post segmentation csum fixup to the only the relevant pkts
- use individual 'accept_gso_type' fields instead of whole gso bitmask
(Willem)
- use only ipv6 addesses from test range in self-tests (Willem)
- hopefully clarified most individual patches commit messages
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/udp.h | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/include/linux/udp.h b/include/linux/udp.h index aa84597bdc33..ae66dadd8543 100644 --- a/include/linux/udp.h +++ b/include/linux/udp.h @@ -51,7 +51,9 @@ struct udp_sock { * different encapsulation layer set * this */ - gro_enabled:1; /* Can accept GRO packets */ + gro_enabled:1, /* Request GRO aggregation */ + accept_udp_l4:1, + accept_udp_fraglist:1; /* * Following member retains the information to create a UDP header * when the socket is uncorked. @@ -131,8 +133,22 @@ static inline void udp_cmsg_recv(struct msghdr *msg, struct sock *sk, static inline bool udp_unexpected_gso(struct sock *sk, struct sk_buff *skb) { - return !udp_sk(sk)->gro_enabled && skb_is_gso(skb) && - skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4; + if (!skb_is_gso(skb)) + return false; + + if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4 && !udp_sk(sk)->accept_udp_l4) + return true; + + if (skb_shinfo(skb)->gso_type & SKB_GSO_FRAGLIST && !udp_sk(sk)->accept_udp_fraglist) + return true; + + return false; +} + +static inline void udp_allow_gso(struct sock *sk) +{ + udp_sk(sk)->accept_udp_l4 = 1; + udp_sk(sk)->accept_udp_fraglist = 1; } #define udp_portaddr_for_each_entry(__sk, list) \ |