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| author | Jiri Pirko <jiri@resnulli.us> | 2013-10-19 12:29:15 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-10-19 19:20:52 -0400 |
| commit | e36d3ff91130002c7c2d1d6a55556991da1daecc (patch) | |
| tree | d92b582ce75873973b4fed7d4b2c1dd5fdf18b82 /net | |
| parent | f2e5ddcc0d12f9c4c7b254358ad245c9dddce13b (diff) | |
| download | linux-e36d3ff91130002c7c2d1d6a55556991da1daecc.tar.gz linux-e36d3ff91130002c7c2d1d6a55556991da1daecc.tar.bz2 linux-e36d3ff91130002c7c2d1d6a55556991da1daecc.zip | |
udp6: respect IPV6_DONTFRAG sockopt in case there are pending frames
if up->pending != 0 dontfrag is left with default value -1. That
causes that application that do:
sendto len>mtu flag MSG_MORE
sendto len>mtu flag 0
will receive EMSGSIZE errno as the result of the second sendto.
This patch fixes it by respecting IPV6_DONTFRAG socket option.
introduced by:
commit 4b340ae20d0e2366792abe70f46629e576adaf5e "IPv6: Complete IPV6_DONTFRAG support"
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/udp.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 72b7eaaf3ca0..18786098fd41 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -1225,9 +1225,6 @@ do_udp_sendmsg: if (tclass < 0) tclass = np->tclass; - if (dontfrag < 0) - dontfrag = np->dontfrag; - if (msg->msg_flags&MSG_CONFIRM) goto do_confirm; back_from_confirm: @@ -1246,6 +1243,8 @@ back_from_confirm: up->pending = AF_INET6; do_append_data: + if (dontfrag < 0) + dontfrag = np->dontfrag; up->len += ulen; getfrag = is_udplite ? udplite_getfrag : ip_generic_getfrag; err = ip6_append_data(sk, getfrag, msg->msg_iov, ulen, |