diff options
| author |   David S. Miller <davem@davemloft.net> | 2011-07-14 07:53:20 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-07-14 07:53:20 -0700 |
| commit | f6b72b6217f8c24f2a54988e58af858b4e66024d (patch) | |
| tree | c59d5adcf9bb226db6f602c5078106052524cfea /net/ipv6/ip6_output.c | |
| parent | slip: remove dead code within the slip initialization (diff) | |
| download | linux-dev-f6b72b6217f8c24f2a54988e58af858b4e66024d.tar.xz linux-dev-f6b72b6217f8c24f2a54988e58af858b4e66024d.zip | |
net: Embed hh_cache inside of struct neighbour.
Now that there is a one-to-one correspondance between neighbour
and hh_cache entries, we no longer need:
1) dynamic allocation
2) attachment to dst->hh
3) refcounting
Initialization of the hh_cache entry is indicated by hh_len
being non-zero, and such initialization is always done with
the neighbour's lock held as a writer.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_output.c')
| -rw-r--r-- | net/ipv6/ip6_output.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 9d4b165837d6..f0f144cac0bd 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -100,6 +100,7 @@ static int ip6_finish_output2(struct sk_buff *skb) { struct dst_entry *dst = skb_dst(skb); struct net_device *dev = dst->dev; + struct neighbour *neigh; skb->protocol = htons(ETH_P_IPV6); skb->dev = dev; @@ -134,11 +135,14 @@ static int ip6_finish_output2(struct sk_buff *skb) skb->len); } - if (dst->hh) - return neigh_hh_output(dst->hh, skb); - else if (dst->neighbour) - return dst->neighbour->output(skb); - + neigh = dst->neighbour; + if (neigh) { + struct hh_cache *hh = &neigh->hh; + if (hh->hh_len) + return neigh_hh_output(hh, skb); + else + return dst->neighbour->output(skb); + } IP6_INC_STATS_BH(dev_net(dst->dev), ip6_dst_idev(dst), IPSTATS_MIB_OUTNOROUTES); kfree_skb(skb); |