diff options
Diffstat (limited to 'net/netfilter/ipvs/ip_vs_proto_tcp.c')
| -rw-r--r-- | net/netfilter/ipvs/ip_vs_proto_tcp.c | 40 |
1 files changed, 17 insertions, 23 deletions
diff --git a/net/netfilter/ipvs/ip_vs_proto_tcp.c b/net/netfilter/ipvs/ip_vs_proto_tcp.c index cd609cc62721..9af653a75825 100644 --- a/net/netfilter/ipvs/ip_vs_proto_tcp.c +++ b/net/netfilter/ipvs/ip_vs_proto_tcp.c @@ -33,16 +33,14 @@ static int tcp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd, - int *verdict, struct ip_vs_conn **cpp) + int *verdict, struct ip_vs_conn **cpp, + struct ip_vs_iphdr *iph) { struct net *net; struct ip_vs_service *svc; struct tcphdr _tcph, *th; - struct ip_vs_iphdr iph; - ip_vs_fill_iphdr(af, skb_network_header(skb), &iph); - - th = skb_header_pointer(skb, iph.len, sizeof(_tcph), &_tcph); + th = skb_header_pointer(skb, iph->len, sizeof(_tcph), &_tcph); if (th == NULL) { *verdict = NF_DROP; return 0; @@ -50,8 +48,8 @@ tcp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd, net = skb_net(skb); /* No !th->ack check to allow scheduling on SYN+ACK for Active FTP */ if (th->syn && - (svc = ip_vs_service_get(net, af, skb->mark, iph.protocol, - &iph.daddr, th->dest))) { + (svc = ip_vs_service_get(net, af, skb->mark, iph->protocol, + &iph->daddr, th->dest))) { int ignored; if (ip_vs_todrop(net_ipvs(net))) { @@ -68,10 +66,10 @@ tcp_conn_schedule(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd, * Let the virtual server select a real server for the * incoming connection, and create a connection entry. */ - *cpp = ip_vs_schedule(svc, skb, pd, &ignored); + *cpp = ip_vs_schedule(svc, skb, pd, &ignored, iph); if (!*cpp && ignored <= 0) { if (!ignored) - *verdict = ip_vs_leave(svc, skb, pd); + *verdict = ip_vs_leave(svc, skb, pd, iph); else { ip_vs_service_put(svc); *verdict = NF_DROP; @@ -128,20 +126,18 @@ tcp_partial_csum_update(int af, struct tcphdr *tcph, static int -tcp_snat_handler(struct sk_buff *skb, - struct ip_vs_protocol *pp, struct ip_vs_conn *cp) +tcp_snat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, + struct ip_vs_conn *cp, struct ip_vs_iphdr *iph) { struct tcphdr *tcph; - unsigned int tcphoff; + unsigned int tcphoff = iph->len; int oldlen; int payload_csum = 0; #ifdef CONFIG_IP_VS_IPV6 - if (cp->af == AF_INET6) - tcphoff = sizeof(struct ipv6hdr); - else + if (cp->af == AF_INET6 && iph->fragoffs) + return 1; #endif - tcphoff = ip_hdrlen(skb); oldlen = skb->len - tcphoff; /* csum_check requires unshared skb */ @@ -208,20 +204,18 @@ tcp_snat_handler(struct sk_buff *skb, static int -tcp_dnat_handler(struct sk_buff *skb, - struct ip_vs_protocol *pp, struct ip_vs_conn *cp) +tcp_dnat_handler(struct sk_buff *skb, struct ip_vs_protocol *pp, + struct ip_vs_conn *cp, struct ip_vs_iphdr *iph) { struct tcphdr *tcph; - unsigned int tcphoff; + unsigned int tcphoff = iph->len; int oldlen; int payload_csum = 0; #ifdef CONFIG_IP_VS_IPV6 - if (cp->af == AF_INET6) - tcphoff = sizeof(struct ipv6hdr); - else + if (cp->af == AF_INET6 && iph->fragoffs) + return 1; #endif - tcphoff = ip_hdrlen(skb); oldlen = skb->len - tcphoff; /* csum_check requires unshared skb */ |