diff options
| author | Ingo Molnar <mingo@kernel.org> | 2014-01-13 11:44:41 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-01-13 11:44:41 +0100 |
| commit | 1c62448e39285b23b4770aaf46d32368fff990df (patch) | |
| tree | c6c6cf1a80a762a5859bfdaf3941294a47ea8eee /net/ipv6/ip6_output.c | |
| parent | 47933ad41a86a4a9b50bed7c9b9bd2ba242aac63 (diff) | |
| parent | 7e22e91102c6b9df7c4ae2168910e19d2bb14cd6 (diff) | |
Merge tag 'v3.13-rc8' into core/locking
Refresh the tree with the latest fixes, before applying new changes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/ipv6/ip6_output.c')
| -rw-r--r-- | net/ipv6/ip6_output.c | 36 |
1 files changed, 27 insertions, 9 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 4acdb63495d..e6f93199799 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -1193,11 +1193,35 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, fragheaderlen = sizeof(struct ipv6hdr) + rt->rt6i_nfheader_len + (opt ? opt->opt_nflen : 0); - maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen - sizeof(struct frag_hdr); + maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen - + sizeof(struct frag_hdr); if (mtu <= sizeof(struct ipv6hdr) + IPV6_MAXPLEN) { - if (cork->length + length > sizeof(struct ipv6hdr) + IPV6_MAXPLEN - fragheaderlen) { - ipv6_local_error(sk, EMSGSIZE, fl6, mtu-exthdrlen); + unsigned int maxnonfragsize, headersize; + + headersize = sizeof(struct ipv6hdr) + + (opt ? opt->tot_len : 0) + + (dst_allfrag(&rt->dst) ? + sizeof(struct frag_hdr) : 0) + + rt->rt6i_nfheader_len; + + maxnonfragsize = (np->pmtudisc >= IPV6_PMTUDISC_DO) ? + mtu : sizeof(struct ipv6hdr) + IPV6_MAXPLEN; + + /* dontfrag active */ + if ((cork->length + length > mtu - headersize) && dontfrag && + (sk->sk_protocol == IPPROTO_UDP || + sk->sk_protocol == IPPROTO_RAW)) { + ipv6_local_rxpmtu(sk, fl6, mtu - headersize + + sizeof(struct ipv6hdr)); + goto emsgsize; + } + + if (cork->length + length > maxnonfragsize - headersize) { +emsgsize: + ipv6_local_error(sk, EMSGSIZE, fl6, + mtu - headersize + + sizeof(struct ipv6hdr)); return -EMSGSIZE; } } @@ -1222,12 +1246,6 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, * --yoshfuji */ - if ((length > mtu) && dontfrag && (sk->sk_protocol == IPPROTO_UDP || - sk->sk_protocol == IPPROTO_RAW)) { - ipv6_local_rxpmtu(sk, fl6, mtu-exthdrlen); - return -EMSGSIZE; - } - skb = skb_peek_tail(&sk->sk_write_queue); cork->length += length; if (((length > mtu) || |