diff options
| author | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2021-05-18 00:48:02 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2021-05-18 00:48:02 +0300 |
| commit | d22fe808f9a3456f16015e79f1b86a10ce13099f (patch) | |
| tree | 8e8c99d742696a810297d54d650f308f6156d466 /include/net/udp.h | |
| parent | 1a7910368cba1e76b992b116fc8ba28503e6dcc1 (diff) | |
| parent | 6efb943b8616ec53a5e444193dccf1af9ad627b5 (diff) | |
| download | linux-d22fe808f9a3456f16015e79f1b86a10ce13099f.tar.xz | |
Merge drm/drm-next into drm-intel-next
Time to get back in sync...
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'include/net/udp.h')
| -rw-r--r-- | include/net/udp.h | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/include/net/udp.h b/include/net/udp.h index a132a02b2f2c..360df454356c 100644 --- a/include/net/udp.h +++ b/include/net/udp.h @@ -329,6 +329,8 @@ struct sock *__udp6_lib_lookup(struct net *net, struct sk_buff *skb); struct sock *udp6_lib_lookup_skb(const struct sk_buff *skb, __be16 sport, __be16 dport); +int udp_read_sock(struct sock *sk, read_descriptor_t *desc, + sk_read_actor_t recv_actor); /* UDP uses skb->dev_scratch to cache as much information as possible and avoid * possibly multiple cache miss on dequeue() @@ -515,9 +517,33 @@ static inline struct sk_buff *udp_rcv_segment(struct sock *sk, return segs; } -#ifdef CONFIG_BPF_STREAM_PARSER +static inline void udp_post_segment_fix_csum(struct sk_buff *skb) +{ + /* UDP-lite can't land here - no GRO */ + WARN_ON_ONCE(UDP_SKB_CB(skb)->partial_cov); + + /* UDP packets generated with UDP_SEGMENT and traversing: + * + * UDP tunnel(xmit) -> veth (segmentation) -> veth (gro) -> UDP tunnel (rx) + * + * can reach an UDP socket with CHECKSUM_NONE, because + * __iptunnel_pull_header() converts CHECKSUM_PARTIAL into NONE. + * SKB_GSO_UDP_L4 or SKB_GSO_FRAGLIST packets with no UDP tunnel will + * have a valid checksum, as the GRO engine validates the UDP csum + * before the aggregation and nobody strips such info in between. + * Instead of adding another check in the tunnel fastpath, we can force + * a valid csum after the segmentation. + * Additionally fixup the UDP CB. + */ + UDP_SKB_CB(skb)->cscov = skb->len; + if (skb->ip_summed == CHECKSUM_NONE && !skb->csum_valid) + skb->csum_valid = 1; +} + +#ifdef CONFIG_BPF_SYSCALL struct sk_psock; struct proto *udp_bpf_get_proto(struct sock *sk, struct sk_psock *psock); -#endif /* BPF_STREAM_PARSER */ +int udp_bpf_update_proto(struct sock *sk, struct sk_psock *psock, bool restore); +#endif #endif /* _UDP_H */ |