diff options
| author | Paolo Abeni | 2017-08-25 14:31:01 +0200 |
|---|---|---|
| committer | David S. Miller | 2017-08-25 20:09:13 -0700 |
| commit | 64f0f5d18a47c703c85576375cc010e83dac6a48 (patch) | |
| tree | cf982fdd2ab7757341873711bd9bed8bdb974712 /include | |
| parent | 2207d182c14294d78b98142f0b6a16bea5e8b0fb (diff) | |
udp6: set rx_dst_cookie on rx_dst updates
Currently, in the udp6 code, the dst cookie is not initialized/updated
concurrently with the RX dst used by early demux.
As a result, the dst_check() in the early_demux path always fails,
the rx dst cache is always invalidated, and we can't really
leverage significant gain from the demux lookup.
Fix it adding udp6 specific variant of sk_rx_dst_set() and use it
to set the dst cookie when the dst entry is really changed.
The issue is there since the introduction of early demux for ipv6.
Fixes: 5425077d73e0 ("net: ipv6: Add early demux handler for UDP unicast")
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/udp.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/udp.h b/include/net/udp.h index 586de4b811b5..626c2d8a70c5 100644 --- a/include/net/udp.h +++ b/include/net/udp.h @@ -260,7 +260,7 @@ static inline struct sk_buff *skb_recv_udp(struct sock *sk, unsigned int flags, } void udp_v4_early_demux(struct sk_buff *skb); -void udp_sk_rx_dst_set(struct sock *sk, struct dst_entry *dst); +bool udp_sk_rx_dst_set(struct sock *sk, struct dst_entry *dst); int udp_get_port(struct sock *sk, unsigned short snum, int (*saddr_cmp)(const struct sock *, const struct sock *)); |