| commit | eaa72dc47488d599439cd0fd0f8c4f1bcb3906bb | |
| author | Eric Dumazet <edumazet@google.com> | |
| Tue, 29 Aug 2017 22:16:01 +0000 (29 15:16 -0700) | ||
| committer | David S. Miller <davem@davemloft.net> | |
| Tue, 29 Aug 2017 23:10:50 +0000 (29 16:10 -0700) | ||
| tree | d35829277414b465b199dcada5af2e70f6183533 | treesnapshot (tar.gz zip) |
| parent | 0dd5759dbb1c9a862e7d90c09d6cf398c45f1100 | commitdiff |
neigh: increase queue_len_bytes to match wmem_default
Florian reported UDP xmit drops that could be root caused to the
too small neigh limit.
Current limit is 64 KB, meaning that even a single UDP socket would hit
it, since its default sk_sndbuf comes from net.core.wmem_default
(~212992 bytes on 64bit arches).
Once ARP/ND resolution is in progress, we should allow a little more
packets to be queued, at least for one producer.
Once neigh arp_queue is filled, a rogue socket should hit its sk_sndbuf
limit and either block in sendmsg() or return -EAGAIN.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian reported UDP xmit drops that could be root caused to the
too small neigh limit.
Current limit is 64 KB, meaning that even a single UDP socket would hit
it, since its default sk_sndbuf comes from net.core.wmem_default
(~212992 bytes on 64bit arches).
Once ARP/ND resolution is in progress, we should allow a little more
packets to be queued, at least for one producer.
Once neigh arp_queue is filled, a rogue socket should hit its sk_sndbuf
limit and either block in sendmsg() or return -EAGAIN.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>