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[TCP]: remove tcp header from tcp_v4_check (take #2)

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The tcphdr struct passed to tcp_v4_check is not used, the following
patch removes it from the parameter list.

This adds the netfilter modifications missing in the patch I sent
for rc3-mm1.

Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Frederik Deweerdt 2007-02-04 20:15:27 -08:00 committed by David S. Miller
parent a0d78ebf3a
commit ba7808eac1
5 changed files with 11 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/net/tcp.h
View File

@ -802,9 +802,8 @@ static inline void tcp_update_wl(struct tcp_sock *tp, u32 ack, u32 seq)
/*
* Calculate(/check) TCP checksum
*/
static inline __sum16 tcp_v4_check(struct tcphdr *th, int len,
__be32 saddr, __be32 daddr,
__wsum base)
static inline __sum16 tcp_v4_check(int len, __be32 saddr,
__be32 daddr, __wsum base)
{
return csum_tcpudp_magic(saddr,daddr,len,IPPROTO_TCP,base);
}

2
net/ipv4/netfilter/ip_nat_helper.c
View File

@ -183,7 +183,7 @@ ip_nat_mangle_tcp_packet(struct sk_buff **pskb,
datalen = (*pskb)->len - iph->ihl*4;
if ((*pskb)->ip_summed != CHECKSUM_PARTIAL) {
tcph->check = 0;
tcph->check = tcp_v4_check(tcph, datalen,
tcph->check = tcp_v4_check(datalen,
iph->saddr, iph->daddr,
csum_partial((char *)tcph,
datalen, 0));

2
net/ipv4/netfilter/ipt_REJECT.c
View File

@ -116,7 +116,7 @@ static void send_reset(struct sk_buff *oldskb, int hook)
/* Adjust TCP checksum */
tcph->check = 0;
tcph->check = tcp_v4_check(tcph, sizeof(struct tcphdr),
tcph->check = tcp_v4_check(sizeof(struct tcphdr),
nskb->nh.iph->saddr,
nskb->nh.iph->daddr,
csum_partial((char *)tcph,

2
net/ipv4/netfilter/nf_nat_helper.c
View File

@ -176,7 +176,7 @@ nf_nat_mangle_tcp_packet(struct sk_buff **pskb,
datalen = (*pskb)->len - iph->ihl*4;
if ((*pskb)->ip_summed != CHECKSUM_PARTIAL) {
tcph->check = 0;
tcph->check = tcp_v4_check(tcph, datalen,
tcph->check = tcp_v4_check(datalen,
iph->saddr, iph->daddr,
csum_partial((char *)tcph,
datalen, 0));

12
net/ipv4/tcp_ipv4.c
View File

@ -502,11 +502,11 @@ void tcp_v4_send_check(struct sock *sk, int len, struct sk_buff *skb)
struct tcphdr *th = skb->h.th;
if (skb->ip_summed == CHECKSUM_PARTIAL) {
th->check = ~tcp_v4_check(th, len,
inet->saddr, inet->daddr, 0);
th->check = ~tcp_v4_check(len, inet->saddr,
inet->daddr, 0);
skb->csum_offset = offsetof(struct tcphdr, check);
} else {
th->check = tcp_v4_check(th, len, inet->saddr, inet->daddr,
th->check = tcp_v4_check(len, inet->saddr, inet->daddr,
csum_partial((char *)th,
th->doff << 2,
skb->csum));
@ -525,7 +525,7 @@ int tcp_v4_gso_send_check(struct sk_buff *skb)
th = skb->h.th;
th->check = 0;
th->check = ~tcp_v4_check(th, skb->len, iph->saddr, iph->daddr, 0);
th->check = ~tcp_v4_check(skb->len, iph->saddr, iph->daddr, 0);
skb->csum_offset = offsetof(struct tcphdr, check);
skb->ip_summed = CHECKSUM_PARTIAL;
return 0;
@ -747,7 +747,7 @@ static int tcp_v4_send_synack(struct sock *sk, struct request_sock *req,
if (skb) {
struct tcphdr *th = skb->h.th;
th->check = tcp_v4_check(th, skb->len,
th->check = tcp_v4_check(skb->len,
ireq->loc_addr,
ireq->rmt_addr,
csum_partial((char *)th, skb->len,
@ -1514,7 +1514,7 @@ static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
static __sum16 tcp_v4_checksum_init(struct sk_buff *skb)
{
if (skb->ip_summed == CHECKSUM_COMPLETE) {
if (!tcp_v4_check(skb->h.th, skb->len, skb->nh.iph->saddr,
if (!tcp_v4_check(skb->len, skb->nh.iph->saddr,
skb->nh.iph->daddr, skb->csum)) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
return 0;