diff options
Diffstat (limited to 'net/netfilter/ipvs/ip_vs_xmit.c')
-rw-r--r-- | net/netfilter/ipvs/ip_vs_xmit.c | 98 |
1 files changed, 49 insertions, 49 deletions
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c index 49df6bea6a2d..8817afa34e6a 100644 --- a/net/netfilter/ipvs/ip_vs_xmit.c +++ b/net/netfilter/ipvs/ip_vs_xmit.c @@ -28,7 +28,6 @@ #include <net/ip6_route.h> #include <linux/icmpv6.h> #include <linux/netfilter.h> -#include <net/netfilter/nf_conntrack.h> #include <linux/netfilter_ipv4.h> #include <net/ip_vs.h> @@ -194,12 +193,37 @@ ip_vs_dst_reset(struct ip_vs_dest *dest) dst_release(old_dst); } -#define IP_VS_XMIT(pf, skb, rt) \ +#define IP_VS_XMIT_TUNNEL(skb, cp) \ +({ \ + int __ret = NF_ACCEPT; \ + \ + if (unlikely((cp)->flags & IP_VS_CONN_F_NFCT)) \ + __ret = ip_vs_confirm_conntrack(skb, cp); \ + if (__ret == NF_ACCEPT) { \ + nf_reset(skb); \ + (skb)->ip_summed = CHECKSUM_NONE; \ + } \ + __ret; \ +}) + +#define IP_VS_XMIT_NAT(pf, skb, cp) \ do { \ - (skb)->ipvs_property = 1; \ + if (likely(!((cp)->flags & IP_VS_CONN_F_NFCT))) \ + (skb)->ipvs_property = 1; \ + else \ + ip_vs_update_conntrack(skb, cp, 1); \ skb_forward_csum(skb); \ NF_HOOK(pf, NF_INET_LOCAL_OUT, (skb), NULL, \ - (rt)->dst.dev, dst_output); \ + skb_dst(skb)->dev, dst_output); \ +} while (0) + +#define IP_VS_XMIT(pf, skb, cp) \ +do { \ + if (likely(!((cp)->flags & IP_VS_CONN_F_NFCT))) \ + (skb)->ipvs_property = 1; \ + skb_forward_csum(skb); \ + NF_HOOK(pf, NF_INET_LOCAL_OUT, (skb), NULL, \ + skb_dst(skb)->dev, dst_output); \ } while (0) @@ -271,7 +295,7 @@ ip_vs_bypass_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, /* Another hack: avoid icmp_send in ip_fragment */ skb->local_df = 1; - IP_VS_XMIT(NFPROTO_IPV4, skb, rt); + IP_VS_XMIT(NFPROTO_IPV4, skb, cp); LeaveFunction(10); return NF_STOLEN; @@ -335,7 +359,7 @@ ip_vs_bypass_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, /* Another hack: avoid icmp_send in ip_fragment */ skb->local_df = 1; - IP_VS_XMIT(NFPROTO_IPV6, skb, rt); + IP_VS_XMIT(NFPROTO_IPV6, skb, cp); LeaveFunction(10); return NF_STOLEN; @@ -349,36 +373,6 @@ ip_vs_bypass_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, } #endif -void -ip_vs_update_conntrack(struct sk_buff *skb, struct ip_vs_conn *cp, int outin) -{ - struct nf_conn *ct = (struct nf_conn *)skb->nfct; - struct nf_conntrack_tuple new_tuple; - - if (ct == NULL || nf_ct_is_untracked(ct) || nf_ct_is_confirmed(ct)) - return; - - /* - * The connection is not yet in the hashtable, so we update it. - * CIP->VIP will remain the same, so leave the tuple in - * IP_CT_DIR_ORIGINAL untouched. When the reply comes back from the - * real-server we will see RIP->DIP. - */ - new_tuple = ct->tuplehash[IP_CT_DIR_REPLY].tuple; - if (outin) - new_tuple.src.u3 = cp->daddr; - else - new_tuple.dst.u3 = cp->vaddr; - /* - * This will also take care of UDP and other protocols. - */ - if (outin) - new_tuple.src.u.tcp.port = cp->dport; - else - new_tuple.dst.u.tcp.port = cp->vport; - nf_conntrack_alter_reply(ct, &new_tuple); -} - /* * NAT transmitter (only for outside-to-inside nat forwarding) * Not used for related ICMP @@ -434,8 +428,6 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, IP_VS_DBG_PKT(10, pp, skb, 0, "After DNAT"); - ip_vs_update_conntrack(skb, cp, 1); - /* FIXME: when application helper enlarges the packet and the length is larger than the MTU of outgoing device, there will be still MTU problem. */ @@ -443,7 +435,7 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, /* Another hack: avoid icmp_send in ip_fragment */ skb->local_df = 1; - IP_VS_XMIT(NFPROTO_IPV4, skb, rt); + IP_VS_XMIT_NAT(NFPROTO_IPV4, skb, cp); LeaveFunction(10); return NF_STOLEN; @@ -451,8 +443,8 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, tx_error_icmp: dst_link_failure(skb); tx_error: - LeaveFunction(10); kfree_skb(skb); + LeaveFunction(10); return NF_STOLEN; tx_error_put: ip_rt_put(rt); @@ -512,8 +504,6 @@ ip_vs_nat_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, IP_VS_DBG_PKT(10, pp, skb, 0, "After DNAT"); - ip_vs_update_conntrack(skb, cp, 1); - /* FIXME: when application helper enlarges the packet and the length is larger than the MTU of outgoing device, there will be still MTU problem. */ @@ -521,7 +511,7 @@ ip_vs_nat_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, /* Another hack: avoid icmp_send in ip_fragment */ skb->local_df = 1; - IP_VS_XMIT(NFPROTO_IPV6, skb, rt); + IP_VS_XMIT_NAT(NFPROTO_IPV6, skb, cp); LeaveFunction(10); return NF_STOLEN; @@ -571,6 +561,7 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, struct iphdr *iph; /* Our new IP header */ unsigned int max_headroom; /* The extra header space needed */ int mtu; + int ret; EnterFunction(10); @@ -655,7 +646,11 @@ ip_vs_tunnel_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, /* Another hack: avoid icmp_send in ip_fragment */ skb->local_df = 1; - ip_local_out(skb); + ret = IP_VS_XMIT_TUNNEL(skb, cp); + if (ret == NF_ACCEPT) + ip_local_out(skb); + else if (ret == NF_DROP) + kfree_skb(skb); LeaveFunction(10); @@ -681,6 +676,7 @@ ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, struct ipv6hdr *iph; /* Our new IP header */ unsigned int max_headroom; /* The extra header space needed */ int mtu; + int ret; EnterFunction(10); @@ -761,7 +757,11 @@ ip_vs_tunnel_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, /* Another hack: avoid icmp_send in ip_fragment */ skb->local_df = 1; - ip6_local_out(skb); + ret = IP_VS_XMIT_TUNNEL(skb, cp); + if (ret == NF_ACCEPT) + ip6_local_out(skb); + else if (ret == NF_DROP) + kfree_skb(skb); LeaveFunction(10); @@ -820,7 +820,7 @@ ip_vs_dr_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, /* Another hack: avoid icmp_send in ip_fragment */ skb->local_df = 1; - IP_VS_XMIT(NFPROTO_IPV4, skb, rt); + IP_VS_XMIT(NFPROTO_IPV4, skb, cp); LeaveFunction(10); return NF_STOLEN; @@ -873,7 +873,7 @@ ip_vs_dr_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, /* Another hack: avoid icmp_send in ip_fragment */ skb->local_df = 1; - IP_VS_XMIT(NFPROTO_IPV6, skb, rt); + IP_VS_XMIT(NFPROTO_IPV6, skb, cp); LeaveFunction(10); return NF_STOLEN; @@ -947,7 +947,7 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp, /* Another hack: avoid icmp_send in ip_fragment */ skb->local_df = 1; - IP_VS_XMIT(NFPROTO_IPV4, skb, rt); + IP_VS_XMIT(NFPROTO_IPV4, skb, cp); rc = NF_STOLEN; goto out; @@ -1022,7 +1022,7 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp, /* Another hack: avoid icmp_send in ip_fragment */ skb->local_df = 1; - IP_VS_XMIT(NFPROTO_IPV6, skb, rt); + IP_VS_XMIT(NFPROTO_IPV6, skb, cp); rc = NF_STOLEN; goto out; |