diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/fib_frontend.c | 3 | ||||
| -rw-r--r-- | net/ipv4/route.c | 30 |
2 files changed, 18 insertions, 15 deletions
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c index 68c93d1..825c608 100644 --- a/net/ipv4/fib_frontend.c +++ b/net/ipv4/fib_frontend.c @@ -322,7 +322,8 @@ int fib_validate_source(struct sk_buff *skb, __be32 src, __be32 dst, { int r = secpath_exists(skb) ? 0 : IN_DEV_RPFILTER(idev); - if (!r && !fib_num_tclassid_users(dev_net(dev))) { + if (!r && !fib_num_tclassid_users(dev_net(dev)) && + (dev->ifindex != oif || !IN_DEV_TX_REDIRECTS(idev))) { *itag = 0; return 0; } diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 132e0df..b90da1b 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -802,7 +802,8 @@ void ip_rt_send_redirect(struct sk_buff *skb) net = dev_net(rt->dst.dev); peer = inet_getpeer_v4(net->ipv4.peers, ip_hdr(skb)->saddr, 1); if (!peer) { - icmp_send(skb, ICMP_REDIRECT, ICMP_REDIR_HOST, rt->rt_gateway); + icmp_send(skb, ICMP_REDIRECT, ICMP_REDIR_HOST, + rt_nexthop(rt, ip_hdr(skb)->daddr)); return; } @@ -827,7 +828,9 @@ void ip_rt_send_redirect(struct sk_buff *skb) time_after(jiffies, (peer->rate_last + (ip_rt_redirect_load << peer->rate_tokens)))) { - icmp_send(skb, ICMP_REDIRECT, ICMP_REDIR_HOST, rt->rt_gateway); + __be32 gw = rt_nexthop(rt, ip_hdr(skb)->daddr); + + icmp_send(skb, ICMP_REDIRECT, ICMP_REDIR_HOST, gw); peer->rate_last = jiffies; ++peer->rate_tokens; #ifdef CONFIG_IP_ROUTE_VERBOSE @@ -835,7 +838,7 @@ void ip_rt_send_redirect(struct sk_buff *skb) peer->rate_tokens == ip_rt_redirect_number) net_warn_ratelimited("host %pI4/if%d ignores redirects for %pI4 to %pI4\n", &ip_hdr(skb)->saddr, inet_iif(skb), - &ip_hdr(skb)->daddr, &rt->rt_gateway); + &ip_hdr(skb)->daddr, &gw); #endif } out_put_peer: @@ -1442,10 +1445,13 @@ static int __mkroute_input(struct sk_buff *skb, goto cleanup; } - if (out_dev == in_dev && err && + do_cache = res->fi && !itag; + if (out_dev == in_dev && err && IN_DEV_TX_REDIRECTS(out_dev) && (IN_DEV_SHARED_MEDIA(out_dev) || - inet_addr_onlink(out_dev, saddr, FIB_RES_GW(*res)))) + inet_addr_onlink(out_dev, saddr, FIB_RES_GW(*res)))) { flags |= RTCF_DOREDIRECT; + do_cache = false; + } if (skb->protocol != htons(ETH_P_IP)) { /* Not IP (i.e. ARP). Do not create route, if it is @@ -1462,15 +1468,11 @@ static int __mkroute_input(struct sk_buff *skb, } } - do_cache = false; - if (res->fi) { - if (!itag) { - rth = rcu_dereference(FIB_RES_NH(*res).nh_rth_input); - if (rt_cache_valid(rth)) { - skb_dst_set_noref(skb, &rth->dst); - goto out; - } - do_cache = true; + if (do_cache) { + rth = rcu_dereference(FIB_RES_NH(*res).nh_rth_input); + if (rt_cache_valid(rth)) { + skb_dst_set_noref(skb, &rth->dst); + goto out; } } |