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| author | David S. Miller <davem@davemloft.net> | 2012-01-27 15:30:48 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-01-27 21:00:08 -0500 |
| commit | 4991969a1027826c3db19dd3e600e145603e6928 (patch) | |
| tree | 87e2986e22f64b746e550ba377a2b59f20b199a9 | |
| parent | 5339ab8b1dd82f14df168fb9bf59449f3e24b03d (diff) | |
| download | linux-4991969a1027826c3db19dd3e600e145603e6928.tar.gz linux-4991969a1027826c3db19dd3e600e145603e6928.tar.bz2 linux-4991969a1027826c3db19dd3e600e145603e6928.zip | |
ipv6: Remove neigh argument from ndisc_send_redirect()
Instead, compute it as-needed inside of that function using
dst_neigh_lookup().
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/ndisc.h | 1 | ||||
| -rw-r--r-- | net/ipv6/ip6_output.c | 2 | ||||
| -rw-r--r-- | net/ipv6/ndisc.c | 12 |
3 files changed, 11 insertions, 4 deletions
diff --git a/include/net/ndisc.h b/include/net/ndisc.h index e3133c23980e..6f9c25a76cd1 100644 --- a/include/net/ndisc.h +++ b/include/net/ndisc.h @@ -133,7 +133,6 @@ extern void ndisc_send_rs(struct net_device *dev, const struct in6_addr *daddr); extern void ndisc_send_redirect(struct sk_buff *skb, - struct neighbour *neigh, const struct in6_addr *target); extern int ndisc_mc_map(const struct in6_addr *addr, char *buf, diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index d97e07183ce9..604809b89b67 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -486,7 +486,7 @@ int ip6_forward(struct sk_buff *skb) and by source (inside ndisc_send_redirect) */ if (inet_peer_xrlim_allow(rt->rt6i_peer, 1*HZ)) - ndisc_send_redirect(skb, n, target); + ndisc_send_redirect(skb, target); } else { int addrtype = ipv6_addr_type(&hdr->saddr); diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index c574ebce3fb5..8d817018c188 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1512,8 +1512,7 @@ static void ndisc_redirect_rcv(struct sk_buff *skb) } } -void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh, - const struct in6_addr *target) +void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target) { struct net_device *dev = skb->dev; struct net *net = dev_net(dev); @@ -1571,6 +1570,13 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh, goto release; if (dev->addr_len) { + struct neighbour *neigh = dst_neigh_lookup(skb_dst(skb), target); + if (!neigh) { + ND_PRINTK2(KERN_WARNING + "ICMPv6 Redirect: no neigh for target address\n"); + goto release; + } + read_lock_bh(&neigh->lock); if (neigh->nud_state & NUD_VALID) { memcpy(ha_buf, neigh->ha, dev->addr_len); @@ -1579,6 +1585,8 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh, len += ndisc_opt_addr_space(dev); } else read_unlock_bh(&neigh->lock); + + neigh_release(neigh); } rd_len = min_t(unsigned int, |