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author | Jeff Garzik <jeff@garzik.org> | 2006-09-24 01:52:47 -0400 |
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committer | Jeff Garzik <jeff@garzik.org> | 2006-09-24 01:52:47 -0400 |
commit | 23930fa1cebfea6f79881c588ccd1b0781e49e3f (patch) | |
tree | 36d29e3f83661c4f5f45b6f74ac0d5f9886867a8 /net/ipv6/ndisc.c | |
parent | 36b35a5be0e4b406acd816e2122d153e875105be (diff) | |
parent | 4f5537de7c1531398e84e18a24f667e49cc94208 (diff) | |
download | kernel_samsung_smdk4412-23930fa1cebfea6f79881c588ccd1b0781e49e3f.zip kernel_samsung_smdk4412-23930fa1cebfea6f79881c588ccd1b0781e49e3f.tar.gz kernel_samsung_smdk4412-23930fa1cebfea6f79881c588ccd1b0781e49e3f.tar.bz2 |
Merge branch 'master' into upstream
Diffstat (limited to 'net/ipv6/ndisc.c')
-rw-r--r-- | net/ipv6/ndisc.c | 53 |
1 files changed, 41 insertions, 12 deletions
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index b50055b..0304b5f 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -62,6 +62,7 @@ #include <linux/sysctl.h> #endif +#include <linux/if_addr.h> #include <linux/if_arp.h> #include <linux/ipv6.h> #include <linux/icmpv6.h> @@ -411,7 +412,8 @@ static void pndisc_destructor(struct pneigh_entry *n) */ static inline void ndisc_flow_init(struct flowi *fl, u8 type, - struct in6_addr *saddr, struct in6_addr *daddr) + struct in6_addr *saddr, struct in6_addr *daddr, + int oif) { memset(fl, 0, sizeof(*fl)); ipv6_addr_copy(&fl->fl6_src, saddr); @@ -419,6 +421,8 @@ static inline void ndisc_flow_init(struct flowi *fl, u8 type, fl->proto = IPPROTO_ICMPV6; fl->fl_icmp_type = type; fl->fl_icmp_code = 0; + fl->oif = oif; + security_sk_classify_flow(ndisc_socket->sk, fl); } static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh, @@ -450,7 +454,8 @@ static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh, src_addr = &tmpaddr; } - ndisc_flow_init(&fl, NDISC_NEIGHBOUR_ADVERTISEMENT, src_addr, daddr); + ndisc_flow_init(&fl, NDISC_NEIGHBOUR_ADVERTISEMENT, src_addr, daddr, + dev->ifindex); dst = ndisc_dst_alloc(dev, neigh, daddr, ip6_output); if (!dst) @@ -491,7 +496,7 @@ static void ndisc_send_na(struct net_device *dev, struct neighbour *neigh, msg->icmph.icmp6_unused = 0; msg->icmph.icmp6_router = router; msg->icmph.icmp6_solicited = solicited; - msg->icmph.icmp6_override = !!override; + msg->icmph.icmp6_override = override; /* Set the target address. */ ipv6_addr_copy(&msg->target, solicited_addr); @@ -540,7 +545,8 @@ void ndisc_send_ns(struct net_device *dev, struct neighbour *neigh, saddr = &addr_buf; } - ndisc_flow_init(&fl, NDISC_NEIGHBOUR_SOLICITATION, saddr, daddr); + ndisc_flow_init(&fl, NDISC_NEIGHBOUR_SOLICITATION, saddr, daddr, + dev->ifindex); dst = ndisc_dst_alloc(dev, neigh, daddr, ip6_output); if (!dst) @@ -615,7 +621,8 @@ void ndisc_send_rs(struct net_device *dev, struct in6_addr *saddr, int len; int err; - ndisc_flow_init(&fl, NDISC_ROUTER_SOLICITATION, saddr, daddr); + ndisc_flow_init(&fl, NDISC_ROUTER_SOLICITATION, saddr, daddr, + dev->ifindex); dst = ndisc_dst_alloc(dev, NULL, daddr, ip6_output); if (!dst) @@ -729,8 +736,10 @@ static void ndisc_recv_ns(struct sk_buff *skb) struct inet6_ifaddr *ifp; struct inet6_dev *idev = NULL; struct neighbour *neigh; + struct pneigh_entry *pneigh = NULL; int dad = ipv6_addr_any(saddr); int inc; + int is_router; if (ipv6_addr_is_multicast(&msg->target)) { ND_PRINTK2(KERN_WARNING @@ -815,7 +824,9 @@ static void ndisc_recv_ns(struct sk_buff *skb) if (ipv6_chk_acast_addr(dev, &msg->target) || (idev->cnf.forwarding && - pneigh_lookup(&nd_tbl, &msg->target, dev, 0))) { + (ipv6_devconf.proxy_ndp || idev->cnf.proxy_ndp) && + (pneigh = pneigh_lookup(&nd_tbl, + &msg->target, dev, 0)) != NULL)) { if (!(NEIGH_CB(skb)->flags & LOCALLY_ENQUEUED) && skb->pkt_type != PACKET_HOST && inc != 0 && @@ -836,12 +847,14 @@ static void ndisc_recv_ns(struct sk_buff *skb) goto out; } + is_router = !!(pneigh ? pneigh->flags & NTF_ROUTER : idev->cnf.forwarding); + if (dad) { struct in6_addr maddr; ipv6_addr_all_nodes(&maddr); ndisc_send_na(dev, NULL, &maddr, &msg->target, - idev->cnf.forwarding, 0, (ifp != NULL), 1); + is_router, 0, (ifp != NULL), 1); goto out; } @@ -862,7 +875,7 @@ static void ndisc_recv_ns(struct sk_buff *skb) NEIGH_UPDATE_F_OVERRIDE); if (neigh || !dev->hard_header) { ndisc_send_na(dev, neigh, saddr, &msg->target, - idev->cnf.forwarding, + is_router, 1, (ifp != NULL && inc), inc); if (neigh) neigh_release(neigh); @@ -945,6 +958,20 @@ static void ndisc_recv_na(struct sk_buff *skb) if (neigh->nud_state & NUD_FAILED) goto out; + /* + * Don't update the neighbor cache entry on a proxy NA from + * ourselves because either the proxied node is off link or it + * has already sent a NA to us. + */ + if (lladdr && !memcmp(lladdr, dev->dev_addr, dev->addr_len) && + ipv6_devconf.forwarding && ipv6_devconf.proxy_ndp && + pneigh_lookup(&nd_tbl, &msg->target, dev, 0)) { + /* XXX: idev->cnf.prixy_ndp */ + WARN_ON(skb->dst != NULL && + ((struct rt6_info *)skb->dst)->rt6i_idev); + goto out; + } + neigh_update(neigh, lladdr, msg->icmph.icmp6_solicited ? NUD_REACHABLE : NUD_STALE, NEIGH_UPDATE_F_WEAK_OVERRIDE| @@ -959,7 +986,7 @@ static void ndisc_recv_na(struct sk_buff *skb) struct rt6_info *rt; rt = rt6_get_dflt_router(saddr, dev); if (rt) - ip6_del_rt(rt, NULL, NULL, NULL); + ip6_del_rt(rt); } out: @@ -1112,7 +1139,7 @@ static void ndisc_router_discovery(struct sk_buff *skb) if (rt && lifetime == 0) { neigh_clone(neigh); - ip6_del_rt(rt, NULL, NULL, NULL); + ip6_del_rt(rt); rt = NULL; } @@ -1344,7 +1371,8 @@ static void ndisc_redirect_rcv(struct sk_buff *skb) neigh = __neigh_lookup(&nd_tbl, target, skb->dev, 1); if (neigh) { - rt6_redirect(dest, &skb->nh.ipv6h->saddr, neigh, lladdr, + rt6_redirect(dest, &skb->nh.ipv6h->daddr, + &skb->nh.ipv6h->saddr, neigh, lladdr, on_link); neigh_release(neigh); } @@ -1380,7 +1408,8 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh, return; } - ndisc_flow_init(&fl, NDISC_REDIRECT, &saddr_buf, &skb->nh.ipv6h->saddr); + ndisc_flow_init(&fl, NDISC_REDIRECT, &saddr_buf, &skb->nh.ipv6h->saddr, + dev->ifindex); dst = ip6_route_output(NULL, &fl); if (dst == NULL) |