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ipv6: set skb->protocol on tcp, raw and ip6_append_data genereated skbs

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Currently we don't initialize skb->protocol when transmitting data via
tcp, raw(with and without inclhdr) or udp+ufo or appending data directly
to the socket transmit queue (via ip6_append_data). This needs to be
done so that we can get the correct mtu in the xfrm layer.

Setting of skb->protocol happens only in functions where we also have
a transmitting socket and a new skb, so we don't overwrite old values.

Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Hannes Frederic Sowa 2013-08-26 12:31:23 +02:00 committed by Steffen Klassert
parent 5a25cf1e31
commit 9c9c9ad5fa
2 changed files with 4 additions and 0 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

3
net/ipv6/ip6_output.c
View file

@ -238,6 +238,7 @@ int ip6_xmit(struct sock *sk, struct sk_buff *skb, struct flowi6 *fl6,
hdr->saddr = fl6->saddr; hdr->saddr = fl6->saddr;
hdr->daddr = *first_hop; hdr->daddr = *first_hop;
skb->protocol = htons(ETH_P_IPV6);
skb->priority = sk->sk_priority; skb->priority = sk->sk_priority;
skb->mark = sk->sk_mark; skb->mark = sk->sk_mark;
@ -1057,6 +1058,7 @@ static inline int ip6_ufo_append_data(struct sock *sk,
/* initialize protocol header pointer */ /* initialize protocol header pointer */
skb->transport_header = skb->network_header + fragheaderlen; skb->transport_header = skb->network_header + fragheaderlen;
skb->protocol = htons(ETH_P_IPV6);
skb->ip_summed = CHECKSUM_PARTIAL; skb->ip_summed = CHECKSUM_PARTIAL;
skb->csum = 0; skb->csum = 0;
} }
@ -1359,6 +1361,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to,
/* /*
* Fill in the control structures * Fill in the control structures
*/ */
skb->protocol = htons(ETH_P_IPV6);
skb->ip_summed = CHECKSUM_NONE; skb->ip_summed = CHECKSUM_NONE;
skb->csum = 0; skb->csum = 0;
/* reserve for fragmentation and ipsec header */ /* reserve for fragmentation and ipsec header */

1
net/ipv6/raw.c
View file

@ -628,6 +628,7 @@ static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
goto error; goto error;
skb_reserve(skb, hlen); skb_reserve(skb, hlen);
skb->protocol = htons(ETH_P_IPV6);
skb->priority = sk->sk_priority; skb->priority = sk->sk_priority;
skb->mark = sk->sk_mark; skb->mark = sk->sk_mark;
skb_dst_set(skb, &rt->dst); skb_dst_set(skb, &rt->dst);