diff options
| author | YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org> | 2013-01-13 05:02:45 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-01-13 20:17:14 -0500 |
| commit | dd3332bfcb2223458f553f341d3388cb84040e6a (patch) | |
| tree | d48ba8b295ee3d08c4b4b4f8d924038ccec2c5eb /net | |
| parent | 2b464f61f036f7fb9cbc34710c9b2390499e87d0 (diff) | |
ipv6: Store Router Alert option in IP6CB directly.
Router Alert option is very small and we can store the value
itself in the skb.
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/exthdrs.c | 3 | ||||
| -rw-r--r-- | net/ipv6/ip6_input.c | 5 |
2 files changed, 4 insertions, 4 deletions
diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c index 473f628f9f20..07a7d65a7cb6 100644 --- a/net/ipv6/exthdrs.c +++ b/net/ipv6/exthdrs.c @@ -553,7 +553,8 @@ static bool ipv6_hop_ra(struct sk_buff *skb, int optoff) const unsigned char *nh = skb_network_header(skb); if (nh[optoff + 1] == 2) { - IP6CB(skb)->ra = optoff; + IP6CB(skb)->flags |= IP6SKB_ROUTERALERT; + memcpy(&IP6CB(skb)->ra, nh + optoff + 2, sizeof(IP6CB(skb)->ra)); return true; } LIMIT_NETDEBUG(KERN_DEBUG "ipv6_hop_ra: wrong RA length %d\n", diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c index 2ccd35ec3628..4ac5bf30e16a 100644 --- a/net/ipv6/ip6_input.c +++ b/net/ipv6/ip6_input.c @@ -280,9 +280,8 @@ int ip6_mc_input(struct sk_buff *skb) struct inet6_skb_parm *opt = IP6CB(skb); /* Check for MLD */ - if (unlikely(opt->ra)) { + if (unlikely(opt->flags & IP6SKB_ROUTERALERT)) { /* Check if this is a mld message */ - u8 *ptr = skb_network_header(skb) + opt->ra; u8 nexthdr = hdr->nexthdr; __be16 frag_off; int offset; @@ -290,7 +289,7 @@ int ip6_mc_input(struct sk_buff *skb) /* Check if the value of Router Alert * is for MLD (0x0000). */ - if ((ptr[2] | ptr[3]) == 0) { + if (opt->ra == htons(IPV6_OPT_ROUTERALERT_MLD)) { deliver = false; if (!ipv6_ext_hdr(nexthdr)) { |