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[SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph

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Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo
2007-04-20 22:47:35 -07:00
committed by David S. Miller
parent e023dd6437
commit eddc9ec53b
132 changed files with 565 additions and 564 deletions
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64
net/ipv4/tcp_ipv4.c
View File

@@ -125,8 +125,8 @@ void tcp_unhash(struct sock *sk)
static inline __u32 tcp_v4_init_sequence(struct sk_buff *skb)
{
return secure_tcp_sequence_number(skb->nh.iph->daddr,
skb->nh.iph->saddr,
return secure_tcp_sequence_number(ip_hdr(skb)->daddr,
ip_hdr(skb)->saddr,
skb->h.th->dest,
skb->h.th->source);
}
@@ -515,13 +515,13 @@ void tcp_v4_send_check(struct sock *sk, int len, struct sk_buff *skb)
int tcp_v4_gso_send_check(struct sk_buff *skb)
{
struct iphdr *iph;
const struct iphdr *iph;
struct tcphdr *th;
if (!pskb_may_pull(skb, sizeof(*th)))
return -EINVAL;
iph = skb->nh.iph;
iph = ip_hdr(skb);
th = skb->h.th;
th->check = 0;
@@ -585,7 +585,7 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
arg.iov[0].iov_len = sizeof(rep.th);
#ifdef CONFIG_TCP_MD5SIG
key = sk ? tcp_v4_md5_do_lookup(sk, skb->nh.iph->daddr) : NULL;
key = sk ? tcp_v4_md5_do_lookup(sk, ip_hdr(skb)->daddr) : NULL;
if (key) {
rep.opt[0] = htonl((TCPOPT_NOP << 24) |
(TCPOPT_NOP << 16) |
@@ -597,14 +597,14 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
tcp_v4_do_calc_md5_hash((__u8 *)&rep.opt[1],
key,
skb->nh.iph->daddr,
skb->nh.iph->saddr,
ip_hdr(skb)->daddr,
ip_hdr(skb)->saddr,
&rep.th, IPPROTO_TCP,
arg.iov[0].iov_len);
}
#endif
arg.csum = csum_tcpudp_nofold(skb->nh.iph->daddr,
skb->nh.iph->saddr, /* XXX */
arg.csum = csum_tcpudp_nofold(ip_hdr(skb)->daddr,
ip_hdr(skb)->saddr, /* XXX */
sizeof(struct tcphdr), IPPROTO_TCP, 0);
arg.csumoffset = offsetof(struct tcphdr, check) / 2;
@@ -670,7 +670,7 @@ static void tcp_v4_send_ack(struct tcp_timewait_sock *twsk,
* skb->sk) holds true, but we program defensively.
*/
if (!twsk && skb->sk) {
key = tcp_v4_md5_do_lookup(skb->sk, skb->nh.iph->daddr);
key = tcp_v4_md5_do_lookup(skb->sk, ip_hdr(skb)->daddr);
} else if (twsk && twsk->tw_md5_keylen) {
tw_key.key = twsk->tw_md5_key;
tw_key.keylen = twsk->tw_md5_keylen;
@@ -690,14 +690,14 @@ static void tcp_v4_send_ack(struct tcp_timewait_sock *twsk,
tcp_v4_do_calc_md5_hash((__u8 *)&rep.opt[offset],
key,
skb->nh.iph->daddr,
skb->nh.iph->saddr,
ip_hdr(skb)->daddr,
ip_hdr(skb)->saddr,
&rep.th, IPPROTO_TCP,
arg.iov[0].iov_len);
}
#endif
arg.csum = csum_tcpudp_nofold(skb->nh.iph->daddr,
skb->nh.iph->saddr, /* XXX */
arg.csum = csum_tcpudp_nofold(ip_hdr(skb)->daddr,
ip_hdr(skb)->saddr, /* XXX */
arg.iov[0].iov_len, IPPROTO_TCP, 0);
arg.csumoffset = offsetof(struct tcphdr, check) / 2;
@@ -1133,7 +1133,7 @@ static int tcp_v4_inbound_md5_hash(struct sock *sk, struct sk_buff *skb)
*/
__u8 *hash_location = NULL;
struct tcp_md5sig_key *hash_expected;
struct iphdr *iph = skb->nh.iph;
const struct iphdr *iph = ip_hdr(skb);
struct tcphdr *th = skb->h.th;
int length = (th->doff << 2) - sizeof(struct tcphdr);
int genhash;
@@ -1251,8 +1251,8 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
struct inet_request_sock *ireq;
struct tcp_options_received tmp_opt;
struct request_sock *req;
__be32 saddr = skb->nh.iph->saddr;
__be32 daddr = skb->nh.iph->daddr;
__be32 saddr = ip_hdr(skb)->saddr;
__be32 daddr = ip_hdr(skb)->daddr;
__u32 isn = TCP_SKB_CB(skb)->when;
struct dst_entry *dst = NULL;
#ifdef CONFIG_SYN_COOKIES
@@ -1439,7 +1439,7 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = skb->nh.iph->ttl;
newinet->mc_ttl = ip_hdr(skb)->ttl;
inet_csk(newsk)->icsk_ext_hdr_len = 0;
if (newinet->opt)
inet_csk(newsk)->icsk_ext_hdr_len = newinet->opt->optlen;
@@ -1482,7 +1482,7 @@ exit:
static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
{
struct tcphdr *th = skb->h.th;
struct iphdr *iph = skb->nh.iph;
const struct iphdr *iph = ip_hdr(skb);
struct sock *nsk;
struct request_sock **prev;
/* Find possible connection requests. */
@@ -1491,9 +1491,8 @@ static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
if (req)
return tcp_check_req(sk, skb, req, prev);
nsk = inet_lookup_established(&tcp_hashinfo, skb->nh.iph->saddr,
th->source, skb->nh.iph->daddr,
th->dest, inet_iif(skb));
nsk = inet_lookup_established(&tcp_hashinfo, iph->saddr, th->source,
iph->daddr, th->dest, inet_iif(skb));
if (nsk) {
if (nsk->sk_state != TCP_TIME_WAIT) {
@@ -1513,15 +1512,17 @@ static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
static __sum16 tcp_v4_checksum_init(struct sk_buff *skb)
{
const struct iphdr *iph = ip_hdr(skb);
if (skb->ip_summed == CHECKSUM_COMPLETE) {
if (!tcp_v4_check(skb->len, skb->nh.iph->saddr,
skb->nh.iph->daddr, skb->csum)) {
if (!tcp_v4_check(skb->len, iph->saddr,
iph->daddr, skb->csum)) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
return 0;
}
}
skb->csum = csum_tcpudp_nofold(skb->nh.iph->saddr, skb->nh.iph->daddr,
skb->csum = csum_tcpudp_nofold(iph->saddr, iph->daddr,
skb->len, IPPROTO_TCP, 0);
if (skb->len <= 76) {
@@ -1610,6 +1611,7 @@ csum_err:
int tcp_v4_rcv(struct sk_buff *skb)
{
const struct iphdr *iph;
struct tcphdr *th;
struct sock *sk;
int ret;
@@ -1639,18 +1641,17 @@ int tcp_v4_rcv(struct sk_buff *skb)
goto bad_packet;
th = skb->h.th;
iph = ip_hdr(skb);
TCP_SKB_CB(skb)->seq = ntohl(th->seq);
TCP_SKB_CB(skb)->end_seq = (TCP_SKB_CB(skb)->seq + th->syn + th->fin +
skb->len - th->doff * 4);
TCP_SKB_CB(skb)->ack_seq = ntohl(th->ack_seq);
TCP_SKB_CB(skb)->when = 0;
TCP_SKB_CB(skb)->flags = skb->nh.iph->tos;
TCP_SKB_CB(skb)->flags = iph->tos;
TCP_SKB_CB(skb)->sacked = 0;
sk = __inet_lookup(&tcp_hashinfo, skb->nh.iph->saddr, th->source,
skb->nh.iph->daddr, th->dest,
inet_iif(skb));
sk = __inet_lookup(&tcp_hashinfo, iph->saddr, th->source,
iph->daddr, th->dest, inet_iif(skb));
if (!sk)
goto no_tcp_socket;
@@ -1724,8 +1725,7 @@ do_time_wait:
switch (tcp_timewait_state_process(inet_twsk(sk), skb, th)) {
case TCP_TW_SYN: {
struct sock *sk2 = inet_lookup_listener(&tcp_hashinfo,
skb->nh.iph->daddr,
th->dest,
iph->daddr, th->dest,
inet_iif(skb));
if (sk2) {
inet_twsk_deschedule(inet_twsk(sk), &tcp_death_row);