diff options
Diffstat (limited to 'net/netfilter/ipvs/ip_vs_xmit.c')
| -rw-r--r-- | net/netfilter/ipvs/ip_vs_xmit.c | 36 |
1 files changed, 27 insertions, 9 deletions
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c index 428de7579577..a8b75fc8e6a8 100644 --- a/net/netfilter/ipvs/ip_vs_xmit.c +++ b/net/netfilter/ipvs/ip_vs_xmit.c @@ -496,13 +496,15 @@ ip_vs_bypass_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, struct ip_vs_protocol *pp) { struct rt6_info *rt; /* Route to the other host */ - struct ipv6hdr *iph = ipv6_hdr(skb); + struct ip_vs_iphdr iph; int mtu; EnterFunction(10); + ip_vs_fill_iph_skb(cp->af, skb, &iph); - if (!(rt = __ip_vs_get_out_rt_v6(skb, NULL, &iph->daddr, NULL, 0, - IP_VS_RT_MODE_NON_LOCAL))) + rt = __ip_vs_get_out_rt_v6(skb, NULL, &iph.daddr.in6, NULL, 0, + IP_VS_RT_MODE_NON_LOCAL); + if (!rt) goto tx_error_icmp; /* MTU checking */ @@ -513,7 +515,9 @@ ip_vs_bypass_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, skb->dev = net->loopback_dev; } - icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); + /* only send ICMP too big on first fragment */ + if (!iph.fragoffs) + icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); dst_release(&rt->dst); IP_VS_DBG_RL("%s(): frag needed\n", __func__); goto tx_error; @@ -685,7 +689,7 @@ ip_vs_nat_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, ip_vs_fill_iph_skb(cp->af, skb, &iph); /* check if it is a connection of no-client-port */ - if (unlikely(cp->flags & IP_VS_CONN_F_NO_CPORT)) { + if (unlikely(cp->flags & IP_VS_CONN_F_NO_CPORT && !iph.fragoffs)) { __be16 _pt, *p; p = skb_header_pointer(skb, iph.len, sizeof(_pt), &_pt); if (p == NULL) @@ -735,7 +739,9 @@ ip_vs_nat_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, skb->dev = net->loopback_dev; } - icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); + /* only send ICMP too big on first fragment */ + if (!iph.fragoffs) + icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); IP_VS_DBG_RL_PKT(0, AF_INET6, pp, skb, 0, "ip_vs_nat_xmit_v6(): frag needed for"); goto tx_error_put; @@ -940,8 +946,10 @@ ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, unsigned int max_headroom; /* The extra header space needed */ int mtu; int ret; + struct ip_vs_iphdr ipvsh; EnterFunction(10); + ip_vs_fill_iph_skb(cp->af, skb, &ipvsh); if (!(rt = __ip_vs_get_out_rt_v6(skb, cp->dest, &cp->daddr.in6, &saddr, 1, (IP_VS_RT_MODE_LOCAL | @@ -970,7 +978,9 @@ ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, skb->dev = net->loopback_dev; } - icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); + /* only send ICMP too big on first fragment */ + if (!ipvsh.fragoffs) + icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); IP_VS_DBG_RL("%s(): frag needed\n", __func__); goto tx_error_put; } @@ -1116,8 +1126,10 @@ ip_vs_dr_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, { struct rt6_info *rt; /* Route to the other host */ int mtu; + struct ip_vs_iphdr iph; EnterFunction(10); + ip_vs_fill_iph_skb(cp->af, skb, &iph); if (!(rt = __ip_vs_get_out_rt_v6(skb, cp->dest, &cp->daddr.in6, NULL, 0, (IP_VS_RT_MODE_LOCAL | @@ -1136,7 +1148,9 @@ ip_vs_dr_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, skb->dev = net->loopback_dev; } - icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); + /* only send ICMP too big on first fragment */ + if (!iph.fragoffs) + icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); dst_release(&rt->dst); IP_VS_DBG_RL("%s(): frag needed\n", __func__); goto tx_error; @@ -1308,8 +1322,10 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, int rc; int local; int rt_mode; + struct ip_vs_iphdr iph; EnterFunction(10); + ip_vs_fill_iph_skb(cp->af, skb, &iph); /* The ICMP packet for VS/TUN, VS/DR and LOCALNODE will be forwarded directly here, because there is no need to @@ -1372,7 +1388,9 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, skb->dev = net->loopback_dev; } - icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); + /* only send ICMP too big on first fragment */ + if (!iph.fragoffs) + icmpv6_send(skb, ICMPV6_PKT_TOOBIG, 0, mtu); IP_VS_DBG_RL("%s(): frag needed\n", __func__); goto tx_error_put; } |