diff options
Diffstat (limited to 'net/ipv6/ndisc.c')
| -rw-r--r-- | net/ipv6/ndisc.c | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 78141fa46cf8..12179457b2cd 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -430,7 +430,6 @@ static void ndisc_send_skb(struct sk_buff *skb, type = icmp6h->icmp6_type; if (!dst) { - struct sock *sk = net->ipv6.ndisc_sk; struct flowi6 fl6; icmpv6_flow_init(sk, &fl6, type, saddr, daddr, skb->dev->ifindex); @@ -464,10 +463,10 @@ static void ndisc_send_skb(struct sk_buff *skb, rcu_read_unlock(); } -static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh, - const struct in6_addr *daddr, - const struct in6_addr *solicited_addr, - bool router, bool solicited, bool override, bool inc_opt) +void ndisc_send_na(struct net_device *dev, struct neighbour *neigh, + const struct in6_addr *daddr, + const struct in6_addr *solicited_addr, + bool router, bool solicited, bool override, bool inc_opt) { struct sk_buff *skb; struct in6_addr tmpaddr; @@ -665,9 +664,7 @@ static void ndisc_solicit(struct neighbour *neigh, struct sk_buff *skb) } ndisc_send_ns(dev, neigh, target, target, saddr); } else if ((probes -= neigh->parms->app_probes) < 0) { -#ifdef CONFIG_ARPD neigh_app_ns(neigh); -#endif } else { addrconf_addr_solict_mult(target, &mcaddr); ndisc_send_ns(dev, NULL, target, &mcaddr, saddr); @@ -1372,7 +1369,8 @@ static void ndisc_redirect_rcv(struct sk_buff *skb) return; if (!ndopts.nd_opts_rh) { - ip6_redirect_no_header(skb, dev_net(skb->dev), 0, 0); + ip6_redirect_no_header(skb, dev_net(skb->dev), + skb->dev->ifindex, 0); return; } @@ -1521,10 +1519,27 @@ static void pndisc_redo(struct sk_buff *skb) kfree_skb(skb); } +static bool ndisc_suppress_frag_ndisc(struct sk_buff *skb) +{ + struct inet6_dev *idev = __in6_dev_get(skb->dev); + + if (!idev) + return true; + if (IP6CB(skb)->flags & IP6SKB_FRAGMENTED && + idev->cnf.suppress_frag_ndisc) { + net_warn_ratelimited("Received fragmented ndisc packet. Carefully consider disabling suppress_frag_ndisc.\n"); + return true; + } + return false; +} + int ndisc_rcv(struct sk_buff *skb) { struct nd_msg *msg; + if (ndisc_suppress_frag_ndisc(skb)) + return 0; + if (skb_linearize(skb)) return 0; |