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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2013-09-07 12:53:35 +1000 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2013-09-07 12:53:35 +1000 |
| commit | eeca9fad52fc4bfdf42c38bfcf383e932eb3e9d6 (patch) | |
| tree | cc51c880459d41c0e8d7576405bef4c987bc7aa0 /net/ipv6/ip6_output.c | |
| parent | ff6f83fc9d44db09997937c3475d525a6866fbb4 (diff) | |
| parent | b48a97be8e6c2afdba2f3b61fd88c3c7743fbd73 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Merge upstream tree in order to reinstate crct10dif.
Diffstat (limited to 'net/ipv6/ip6_output.c')
| -rw-r--r-- | net/ipv6/ip6_output.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index d5d20cde8d92..6e3ddf806ec2 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -1098,11 +1098,12 @@ static inline struct ipv6_rt_hdr *ip6_rthdr_dup(struct ipv6_rt_hdr *src, return src ? kmemdup(src, (src->hdrlen + 1) * 8, gfp) : NULL; } -static void ip6_append_data_mtu(int *mtu, +static void ip6_append_data_mtu(unsigned int *mtu, int *maxfraglen, unsigned int fragheaderlen, struct sk_buff *skb, - struct rt6_info *rt) + struct rt6_info *rt, + bool pmtuprobe) { if (!(rt->dst.flags & DST_XFRM_TUNNEL)) { if (skb == NULL) { @@ -1114,7 +1115,9 @@ static void ip6_append_data_mtu(int *mtu, * this fragment is not first, the headers * space is regarded as data space. */ - *mtu = dst_mtu(rt->dst.path); + *mtu = min(*mtu, pmtuprobe ? + rt->dst.dev->mtu : + dst_mtu(rt->dst.path)); } *maxfraglen = ((*mtu - fragheaderlen) & ~7) + fragheaderlen - sizeof(struct frag_hdr); @@ -1131,11 +1134,10 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, struct ipv6_pinfo *np = inet6_sk(sk); struct inet_cork *cork; struct sk_buff *skb, *skb_prev = NULL; - unsigned int maxfraglen, fragheaderlen; + unsigned int maxfraglen, fragheaderlen, mtu; int exthdrlen; int dst_exthdrlen; int hh_len; - int mtu; int copy; int err; int offset = 0; @@ -1292,7 +1294,9 @@ alloc_new_skb: /* update mtu and maxfraglen if necessary */ if (skb == NULL || skb_prev == NULL) ip6_append_data_mtu(&mtu, &maxfraglen, - fragheaderlen, skb, rt); + fragheaderlen, skb, rt, + np->pmtudisc == + IPV6_PMTUDISC_PROBE); skb_prev = skb; |