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[SK_BUFF]: Introduce tcp_hdr(), remove skb->h.th

Browse Source 
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
2007-04-10 21:04:22 -07:00
committed by David S. Miller
parent ab6a5bb6b2
commit aa8223c7bb
23 changed files with 134 additions and 122 deletions
Download Patch File Download Diff File Expand all files Collapse all files
net/ipv4/ip_output.c
+2 -2
View File
@@ -1352,8 +1352,8 @@ void ip_send_reply(struct sock *sk, struct sk_buff *skb, struct ip_reply_arg *ar
.tos = RT_TOS(ip_hdr(skb)->tos) } },
/* Not quite clean, but right. */
.uli_u = { .ports =
{ .sport = skb->h.th->dest,
.dport = skb->h.th->source } },
{ .sport = tcp_hdr(skb)->dest,
.dport = tcp_hdr(skb)->source } },
.proto = sk->sk_protocol };
security_skb_classify_flow(skb, &fl);
if (ip_route_output_key(&rt, &fl))
net/ipv4/syncookies.c
+18 -18
View File
@@ -125,10 +125,11 @@ static __u16 const msstab[] = {
__u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb, __u16 *mssp)
{
struct tcp_sock *tp = tcp_sk(sk);
const struct iphdr *iph = ip_hdr(skb);
const struct tcphdr *th = tcp_hdr(skb);
int mssind;
const __u16 mss = *mssp;
tp->last_synq_overflow = jiffies;
/* XXX sort msstab[] by probability? Binary search? */
@@ -138,9 +139,8 @@ __u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb, __u16 *mssp)
NET_INC_STATS_BH(LINUX_MIB_SYNCOOKIESSENT);
return secure_tcp_syn_cookie(ip_hdr(skb)->saddr, ip_hdr(skb)->daddr,
skb->h.th->source, skb->h.th->dest,
ntohl(skb->h.th->seq),
return secure_tcp_syn_cookie(iph->saddr, iph->daddr,
th->source, th->dest, ntohl(th->seq),
jiffies / (HZ * 60), mssind);
}
@@ -157,14 +157,13 @@ __u32 cookie_v4_init_sequence(struct sock *sk, struct sk_buff *skb, __u16 *mssp)
*/
static inline int cookie_check(struct sk_buff *skb, __u32 cookie)
{
__u32 seq;
__u32 mssind;
seq = ntohl(skb->h.th->seq)-1;
mssind = check_tcp_syn_cookie(cookie,
ip_hdr(skb)->saddr, ip_hdr(skb)->daddr,
skb->h.th->source, skb->h.th->dest,
seq, jiffies / (HZ * 60), COUNTER_TRIES);
const struct iphdr *iph = ip_hdr(skb);
const struct tcphdr *th = tcp_hdr(skb);
__u32 seq = ntohl(th->seq) - 1;
__u32 mssind = check_tcp_syn_cookie(cookie, iph->saddr, iph->daddr,
th->source, th->dest, seq,
jiffies / (HZ * 60),
COUNTER_TRIES);
return mssind < NUM_MSS ? msstab[mssind] + 1 : 0;
}
@@ -191,14 +190,15 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
struct inet_request_sock *ireq;
struct tcp_request_sock *treq;
struct tcp_sock *tp = tcp_sk(sk);
__u32 cookie = ntohl(skb->h.th->ack_seq) - 1;
const struct tcphdr *th = tcp_hdr(skb);
__u32 cookie = ntohl(th->ack_seq) - 1;
struct sock *ret = sk;
struct request_sock *req;
int mss;
struct rtable *rt;
__u8 rcv_wscale;
if (!sysctl_tcp_syncookies || !skb->h.th->ack)
if (!sysctl_tcp_syncookies || !th->ack)
goto out;
if (time_after(jiffies, tp->last_synq_overflow + TCP_TIMEOUT_INIT) ||
@@ -220,10 +220,10 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
}
ireq = inet_rsk(req);
treq = tcp_rsk(req);
treq->rcv_isn = ntohl(skb->h.th->seq) - 1;
treq->rcv_isn = ntohl(th->seq) - 1;
treq->snt_isn = cookie;
req->mss = mss;
ireq->rmt_port = skb->h.th->source;
ireq->rmt_port = th->source;
ireq->loc_addr = ip_hdr(skb)->daddr;
ireq->rmt_addr = ip_hdr(skb)->saddr;
ireq->opt = NULL;
@@ -261,8 +261,8 @@ struct sock *cookie_v4_check(struct sock *sk, struct sk_buff *skb,
.tos = RT_CONN_FLAGS(sk) } },
.proto = IPPROTO_TCP,
.uli_u = { .ports =
{ .sport = skb->h.th->dest,
.dport = skb->h.th->source } } };
{ .sport = th->dest,
.dport = th->source } } };
security_req_classify_flow(req, &fl);
if (ip_route_output_key(&rt, &fl)) {
reqsk_free(req);
net/ipv4/tcp.c
+11 -11
View File
@@ -425,7 +425,7 @@ int tcp_ioctl(struct sock *sk, int cmd, unsigned long arg)
/* Subtract 1, if FIN is in queue. */
if (answ && !skb_queue_empty(&sk->sk_receive_queue))
answ -=
((struct sk_buff *)sk->sk_receive_queue.prev)->h.th->fin;
tcp_hdr((struct sk_buff *)sk->sk_receive_queue.prev)->fin;
} else
answ = tp->urg_seq - tp->copied_seq;
release_sock(sk);
@@ -1016,9 +1016,9 @@ static inline struct sk_buff *tcp_recv_skb(struct sock *sk, u32 seq, u32 *off)
skb_queue_walk(&sk->sk_receive_queue, skb) {
offset = seq - TCP_SKB_CB(skb)->seq;
if (skb->h.th->syn)
if (tcp_hdr(skb)->syn)
offset--;
if (offset < skb->len || skb->h.th->fin) {
if (offset < skb->len || tcp_hdr(skb)->fin) {
*off = offset;
return skb;
}
@@ -1070,7 +1070,7 @@ int tcp_read_sock(struct sock *sk, read_descriptor_t *desc,
if (offset != skb->len)
break;
}
if (skb->h.th->fin) {
if (tcp_hdr(skb)->fin) {
sk_eat_skb(sk, skb, 0);
++seq;
break;
@@ -1174,11 +1174,11 @@ int tcp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
break;
}
offset = *seq - TCP_SKB_CB(skb)->seq;
if (skb->h.th->syn)
if (tcp_hdr(skb)->syn)
offset--;
if (offset < skb->len)
goto found_ok_skb;
if (skb->h.th->fin)
if (tcp_hdr(skb)->fin)
goto found_fin_ok;
BUG_TRAP(flags & MSG_PEEK);
skb = skb->next;
@@ -1394,7 +1394,7 @@ skip_copy:
if (used + offset < skb->len)
continue;
if (skb->h.th->fin)
if (tcp_hdr(skb)->fin)
goto found_fin_ok;
if (!(flags & MSG_PEEK)) {
sk_eat_skb(sk, skb, copied_early);
@@ -1563,7 +1563,7 @@ void tcp_close(struct sock *sk, long timeout)
*/
while ((skb = __skb_dequeue(&sk->sk_receive_queue)) != NULL) {
u32 len = TCP_SKB_CB(skb)->end_seq - TCP_SKB_CB(skb)->seq -
skb->h.th->fin;
tcp_hdr(skb)->fin;
data_was_unread += len;
__kfree_skb(skb);
}
@@ -2170,7 +2170,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features)
if (!pskb_may_pull(skb, sizeof(*th)))
goto out;
th = skb->h.th;
th = tcp_hdr(skb);
thlen = th->doff * 4;
if (thlen < sizeof(*th))
goto out;
@@ -2210,7 +2210,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features)
delta = htonl(oldlen + (thlen + len));
skb = segs;
th = skb->h.th;
th = tcp_hdr(skb);
seq = ntohl(th->seq);
do {
@@ -2224,7 +2224,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features)
seq += len;
skb = skb->next;
th = skb->h.th;
th = tcp_hdr(skb);
th->seq = htonl(seq);
th->cwr = 0;
net/ipv4/tcp_input.c
+15 -13
View File
@@ -148,7 +148,7 @@ static void tcp_measure_rcv_mss(struct sock *sk,
* to handle super-low mtu links fairly.
*/
(len >= TCP_MIN_MSS + sizeof(struct tcphdr) &&
!(tcp_flag_word(skb->h.th)&TCP_REMNANT))) {
!(tcp_flag_word(tcp_hdr(skb)) & TCP_REMNANT))) {
/* Subtract also invariant (if peer is RFC compliant),
* tcp header plus fixed timestamp option length.
* Resulting "len" is MSS free of SACK jitter.
@@ -2559,9 +2559,9 @@ static int tcp_ack_update_window(struct sock *sk, struct tcp_sock *tp,
struct sk_buff *skb, u32 ack, u32 ack_seq)
{
int flag = 0;
u32 nwin = ntohs(skb->h.th->window);
u32 nwin = ntohs(tcp_hdr(skb)->window);
if (likely(!skb->h.th->syn))
if (likely(!tcp_hdr(skb)->syn))
nwin <<= tp->rx_opt.snd_wscale;
if (tcp_may_update_window(tp, ack, ack_seq, nwin)) {
@@ -2766,7 +2766,7 @@ static int tcp_ack(struct sock *sk, struct sk_buff *skb, int flag)
if (TCP_SKB_CB(skb)->sacked)
flag |= tcp_sacktag_write_queue(sk, skb, prior_snd_una);
if (TCP_ECN_rcv_ecn_echo(tp, skb->h.th))
if (TCP_ECN_rcv_ecn_echo(tp, tcp_hdr(skb)))
flag |= FLAG_ECE;
tcp_ca_event(sk, CA_EVENT_SLOW_ACK);
@@ -2833,7 +2833,7 @@ uninteresting_ack:
void tcp_parse_options(struct sk_buff *skb, struct tcp_options_received *opt_rx, int estab)
{
unsigned char *ptr;
struct tcphdr *th = skb->h.th;
struct tcphdr *th = tcp_hdr(skb);
int length=(th->doff*4)-sizeof(struct tcphdr);
ptr = (unsigned char *)(th + 1);
@@ -2995,7 +2995,7 @@ static inline void tcp_replace_ts_recent(struct tcp_sock *tp, u32 seq)
static int tcp_disordered_ack(const struct sock *sk, const struct sk_buff *skb)
{
struct tcp_sock *tp = tcp_sk(sk);
struct tcphdr *th = skb->h.th;
struct tcphdr *th = tcp_hdr(skb);
u32 seq = TCP_SKB_CB(skb)->seq;
u32 ack = TCP_SKB_CB(skb)->ack_seq;
@@ -3357,8 +3357,8 @@ static void tcp_ofo_queue(struct sock *sk)
__skb_unlink(skb, &tp->out_of_order_queue);
__skb_queue_tail(&sk->sk_receive_queue, skb);
tp->rcv_nxt = TCP_SKB_CB(skb)->end_seq;
if (skb->h.th->fin)
tcp_fin(skb, sk, skb->h.th);
if (tcp_hdr(skb)->fin)
tcp_fin(skb, sk, tcp_hdr(skb));
}
}
@@ -3366,7 +3366,7 @@ static int tcp_prune_queue(struct sock *sk);
static void tcp_data_queue(struct sock *sk, struct sk_buff *skb)
{
struct tcphdr *th = skb->h.th;
struct tcphdr *th = tcp_hdr(skb);
struct tcp_sock *tp = tcp_sk(sk);
int eaten = -1;
@@ -3605,7 +3605,7 @@ tcp_collapse(struct sock *sk, struct sk_buff_head *list,
* - bloated or contains data before "start" or
* overlaps to the next one.
*/
if (!skb->h.th->syn && !skb->h.th->fin &&
if (!tcp_hdr(skb)->syn && !tcp_hdr(skb)->fin &&
(tcp_win_from_space(skb->truesize) > skb->len ||
before(TCP_SKB_CB(skb)->seq, start) ||
(skb->next != tail &&
@@ -3616,7 +3616,7 @@ tcp_collapse(struct sock *sk, struct sk_buff_head *list,
start = TCP_SKB_CB(skb)->end_seq;
skb = skb->next;
}
if (skb == tail || skb->h.th->syn || skb->h.th->fin)
if (skb == tail || tcp_hdr(skb)->syn || tcp_hdr(skb)->fin)
return;
while (before(start, end)) {
@@ -3665,7 +3665,9 @@ tcp_collapse(struct sock *sk, struct sk_buff_head *list,
__kfree_skb(skb);
NET_INC_STATS_BH(LINUX_MIB_TCPRCVCOLLAPSED);
skb = next;
if (skb == tail || skb->h.th->syn || skb->h.th->fin)
if (skb == tail ||
tcp_hdr(skb)->syn ||
tcp_hdr(skb)->fin)
return;
}
}
@@ -4072,7 +4074,7 @@ static int tcp_dma_try_early_copy(struct sock *sk, struct sk_buff *skb, int hlen
tcp_rcv_space_adjust(sk);
if ((tp->ucopy.len == 0) ||
(tcp_flag_word(skb->h.th) & TCP_FLAG_PSH) ||
(tcp_flag_word(tcp_hdr(skb)) & TCP_FLAG_PSH) ||
(atomic_read(&sk->sk_rmem_alloc) > (sk->sk_rcvbuf >> 1))) {
tp->ucopy.wakeup = 1;
sk->sk_data_ready(sk, 0);
net/ipv4/tcp_ipv4.c
+16 -16
View File
@@ -127,8 +127,8 @@ static inline __u32 tcp_v4_init_sequence(struct sk_buff *skb)
{
return secure_tcp_sequence_number(ip_hdr(skb)->daddr,
ip_hdr(skb)->saddr,
skb->h.th->dest,
skb->h.th->source);
tcp_hdr(skb)->dest,
tcp_hdr(skb)->source);
}
int tcp_twsk_unique(struct sock *sk, struct sock *sktw, void *twp)
@@ -499,7 +499,7 @@ out:
void tcp_v4_send_check(struct sock *sk, int len, struct sk_buff *skb)
{
struct inet_sock *inet = inet_sk(sk);
struct tcphdr *th = skb->h.th;
struct tcphdr *th = tcp_hdr(skb);
if (skb->ip_summed == CHECKSUM_PARTIAL) {
th->check = ~tcp_v4_check(len, inet->saddr,
@@ -522,7 +522,7 @@ int tcp_v4_gso_send_check(struct sk_buff *skb)
return -EINVAL;
iph = ip_hdr(skb);
th = skb->h.th;
th = tcp_hdr(skb);
th->check = 0;
th->check = ~tcp_v4_check(skb->len, iph->saddr, iph->daddr, 0);
@@ -546,7 +546,7 @@ int tcp_v4_gso_send_check(struct sk_buff *skb)
static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
{
struct tcphdr *th = skb->h.th;
struct tcphdr *th = tcp_hdr(skb);
struct {
struct tcphdr th;
#ifdef CONFIG_TCP_MD5SIG
@@ -622,7 +622,7 @@ static void tcp_v4_send_ack(struct tcp_timewait_sock *twsk,
struct sk_buff *skb, u32 seq, u32 ack,
u32 win, u32 ts)
{
struct tcphdr *th = skb->h.th;
struct tcphdr *th = tcp_hdr(skb);
struct {
struct tcphdr th;
__be32 opt[(TCPOLEN_TSTAMP_ALIGNED >> 2)
@@ -745,7 +745,7 @@ static int tcp_v4_send_synack(struct sock *sk, struct request_sock *req,
skb = tcp_make_synack(sk, dst, req);
if (skb) {
struct tcphdr *th = skb->h.th;
struct tcphdr *th = tcp_hdr(skb);
th->check = tcp_v4_check(skb->len,
ireq->loc_addr,
@@ -781,7 +781,7 @@ static void syn_flood_warning(struct sk_buff *skb)
warntime = jiffies;
printk(KERN_INFO
"possible SYN flooding on port %d. Sending cookies.\n",
ntohs(skb->h.th->dest));
ntohs(tcp_hdr(skb)->dest));
}
}
#endif
@@ -1134,7 +1134,7 @@ static int tcp_v4_inbound_md5_hash(struct sock *sk, struct sk_buff *skb)
__u8 *hash_location = NULL;
struct tcp_md5sig_key *hash_expected;
const struct iphdr *iph = ip_hdr(skb);
struct tcphdr *th = skb->h.th;
struct tcphdr *th = tcp_hdr(skb);
int length = (th->doff << 2) - sizeof(struct tcphdr);
int genhash;
unsigned char *ptr;
@@ -1327,7 +1327,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
ireq->rmt_addr = saddr;
ireq->opt = tcp_v4_save_options(sk, skb);
if (!want_cookie)
TCP_ECN_create_request(req, skb->h.th);
TCP_ECN_create_request(req, tcp_hdr(skb));
if (want_cookie) {
#ifdef CONFIG_SYN_COOKIES
@@ -1375,7 +1375,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
LIMIT_NETDEBUG(KERN_DEBUG "TCP: drop open "
"request from %u.%u.%u.%u/%u\n",
NIPQUAD(saddr),
ntohs(skb->h.th->source));
ntohs(tcp_hdr(skb)->source));
dst_release(dst);
goto drop_and_free;
}
@@ -1481,7 +1481,7 @@ exit:
static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
{
struct tcphdr *th = skb->h.th;
struct tcphdr *th = tcp_hdr(skb);
const struct iphdr *iph = ip_hdr(skb);
struct sock *nsk;
struct request_sock **prev;
@@ -1556,7 +1556,7 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
if (sk->sk_state == TCP_ESTABLISHED) { /* Fast path */
TCP_CHECK_TIMER(sk);
if (tcp_rcv_established(sk, skb, skb->h.th, skb->len)) {
if (tcp_rcv_established(sk, skb, tcp_hdr(skb), skb->len)) {
rsk = sk;
goto reset;
}
@@ -1582,7 +1582,7 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
}
TCP_CHECK_TIMER(sk);
if (tcp_rcv_state_process(sk, skb, skb->h.th, skb->len)) {
if (tcp_rcv_state_process(sk, skb, tcp_hdr(skb), skb->len)) {
rsk = sk;
goto reset;
}
@@ -1625,7 +1625,7 @@ int tcp_v4_rcv(struct sk_buff *skb)
if (!pskb_may_pull(skb, sizeof(struct tcphdr)))
goto discard_it;
th = skb->h.th;
th = tcp_hdr(skb);
if (th->doff < sizeof(struct tcphdr) / 4)
goto bad_packet;
@@ -1640,7 +1640,7 @@ int tcp_v4_rcv(struct sk_buff *skb)
tcp_v4_checksum_init(skb)))
goto bad_packet;
th = skb->h.th;
th = tcp_hdr(skb);
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 +
net/ipv4/tcp_minisocks.c
+5 -4
View File
@@ -453,7 +453,8 @@ struct sock *tcp_create_openreq_child(struct sock *sk, struct request_sock *req,
newtp->rx_opt.snd_wscale = newtp->rx_opt.rcv_wscale = 0;
newtp->window_clamp = min(newtp->window_clamp, 65535U);
}
newtp->snd_wnd = ntohs(skb->h.th->window) << newtp->rx_opt.snd_wscale;
newtp->snd_wnd = (ntohs(tcp_hdr(skb)->window) <<
newtp->rx_opt.snd_wscale);
newtp->max_window = newtp->snd_wnd;
if (newtp->rx_opt.tstamp_ok) {
@@ -488,7 +489,7 @@ struct sock *tcp_check_req(struct sock *sk,struct sk_buff *skb,
struct request_sock *req,
struct request_sock **prev)
{
struct tcphdr *th = skb->h.th;
const struct tcphdr *th = tcp_hdr(skb);
__be32 flg = tcp_flag_word(th) & (TCP_FLAG_RST|TCP_FLAG_SYN|TCP_FLAG_ACK);
int paws_reject = 0;
struct tcp_options_received tmp_opt;
@@ -710,8 +711,8 @@ int tcp_child_process(struct sock *parent, struct sock *child,
int state = child->sk_state;
if (!sock_owned_by_user(child)) {
ret = tcp_rcv_state_process(child, skb, skb->h.th, skb->len);
ret = tcp_rcv_state_process(child, skb, tcp_hdr(skb),
skb->len);
/* Wakeup parent, send SIGIO */
if (state == TCP_SYN_RECV && child->sk_state != state)
parent->sk_data_ready(parent, 0);
net/ipv4/tcp_output.c
+8 -5
View File
@@ -465,11 +465,12 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
tcp_header_size += TCPOLEN_MD5SIG_ALIGNED;
#endif
th = (struct tcphdr *) skb_push(skb, tcp_header_size);
skb->h.th = th;
skb_push(skb, tcp_header_size);
skb_reset_transport_header(skb);
skb_set_owner_w(skb, sk);
/* Build TCP header and checksum it. */
th = tcp_hdr(skb);
th->source = inet->sport;
th->dest = inet->dport;
th->seq = htonl(tcb->seq);
@@ -524,7 +525,7 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
tp->af_specific->calc_md5_hash(md5_hash_location,
md5,
sk, NULL, NULL,
skb->h.th,
tcp_hdr(skb),
sk->sk_protocol,
skb->len);
}
@@ -2128,8 +2129,10 @@ struct sk_buff * tcp_make_synack(struct sock *sk, struct dst_entry *dst,
if (md5)
tcp_header_size += TCPOLEN_MD5SIG_ALIGNED;
#endif
skb->h.th = th = (struct tcphdr *) skb_push(skb, tcp_header_size);
skb_push(skb, tcp_header_size);
skb_reset_transport_header(skb);
th = tcp_hdr(skb);
memset(th, 0, sizeof(struct tcphdr));
th->syn = 1;
th->ack = 1;
@@ -2183,7 +2186,7 @@ struct sk_buff * tcp_make_synack(struct sock *sk, struct dst_entry *dst,
tp->af_specific->calc_md5_hash(md5_hash_location,
md5,
NULL, dst, req,
skb->h.th, sk->sk_protocol,
tcp_hdr(skb), sk->sk_protocol,
skb->len);
}
#endif
net/ipv6/tcp_ipv6.c
+16 -16
View File
@@ -117,8 +117,8 @@ static __u32 tcp_v6_init_sequence(struct sk_buff *skb)
{
return secure_tcpv6_sequence_number(ipv6_hdr(skb)->daddr.s6_addr32,
ipv6_hdr(skb)->saddr.s6_addr32,
skb->h.th->dest,
skb->h.th->source);
tcp_hdr(skb)->dest,
tcp_hdr(skb)->source);
}
static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
@@ -509,7 +509,7 @@ static int tcp_v6_send_synack(struct sock *sk, struct request_sock *req,
skb = tcp_make_synack(sk, dst, req);
if (skb) {
struct tcphdr *th = skb->h.th;
struct tcphdr *th = tcp_hdr(skb);
th->check = tcp_v6_check(th, skb->len,
&treq->loc_addr, &treq->rmt_addr,
@@ -838,7 +838,7 @@ static int tcp_v6_inbound_md5_hash (struct sock *sk, struct sk_buff *skb)
__u8 *hash_location = NULL;
struct tcp_md5sig_key *hash_expected;
struct ipv6hdr *ip6h = ipv6_hdr(skb);
struct tcphdr *th = skb->h.th;
struct tcphdr *th = tcp_hdr(skb);
int length = (th->doff << 2) - sizeof (*th);
int genhash;
u8 *ptr;
@@ -946,7 +946,7 @@ static struct timewait_sock_ops tcp6_timewait_sock_ops = {
static void tcp_v6_send_check(struct sock *sk, int len, struct sk_buff *skb)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct tcphdr *th = skb->h.th;
struct tcphdr *th = tcp_hdr(skb);
if (skb->ip_summed == CHECKSUM_PARTIAL) {
th->check = ~csum_ipv6_magic(&np->saddr, &np->daddr, len, IPPROTO_TCP, 0);
@@ -967,7 +967,7 @@ static int tcp_v6_gso_send_check(struct sk_buff *skb)
return -EINVAL;
ipv6h = ipv6_hdr(skb);
th = skb->h.th;
th = tcp_hdr(skb);
th->check = 0;
th->check = ~csum_ipv6_magic(&ipv6h->saddr, &ipv6h->daddr, skb->len,
@@ -979,7 +979,7 @@ static int tcp_v6_gso_send_check(struct sk_buff *skb)
static void tcp_v6_send_reset(struct sock *sk, struct sk_buff *skb)
{
struct tcphdr *th = skb->h.th, *t1;
struct tcphdr *th = tcp_hdr(skb), *t1;
struct sk_buff *buff;
struct flowi fl;
int tot_len = sizeof(*th);
@@ -1079,7 +1079,7 @@ static void tcp_v6_send_reset(struct sock *sk, struct sk_buff *skb)
static void tcp_v6_send_ack(struct tcp_timewait_sock *tw,
struct sk_buff *skb, u32 seq, u32 ack, u32 win, u32 ts)
{
struct tcphdr *th = skb->h.th, *t1;
struct tcphdr *th = tcp_hdr(skb), *t1;
struct sk_buff *buff;
struct flowi fl;
int tot_len = sizeof(struct tcphdr);
@@ -1195,7 +1195,7 @@ static void tcp_v6_reqsk_send_ack(struct sk_buff *skb, struct request_sock *req)
static struct sock *tcp_v6_hnd_req(struct sock *sk,struct sk_buff *skb)
{
struct request_sock *req, **prev;
const struct tcphdr *th = skb->h.th;
const struct tcphdr *th = tcp_hdr(skb);
struct sock *nsk;
/* Find possible connection requests. */
@@ -1275,7 +1275,7 @@ static int tcp_v6_conn_request(struct sock *sk, struct sk_buff *skb)
treq = inet6_rsk(req);
ipv6_addr_copy(&treq->rmt_addr, &ipv6_hdr(skb)->saddr);
ipv6_addr_copy(&treq->loc_addr, &ipv6_hdr(skb)->daddr);
TCP_ECN_create_request(req, skb->h.th);
TCP_ECN_create_request(req, tcp_hdr(skb));
treq->pktopts = NULL;
if (ipv6_opt_accepted(sk, skb) ||
np->rxopt.bits.rxinfo || np->rxopt.bits.rxoinfo ||
@@ -1528,14 +1528,14 @@ out:
static __sum16 tcp_v6_checksum_init(struct sk_buff *skb)
{
if (skb->ip_summed == CHECKSUM_COMPLETE) {
if (!tcp_v6_check(skb->h.th, skb->len, &ipv6_hdr(skb)->saddr,
if (!tcp_v6_check(tcp_hdr(skb), skb->len, &ipv6_hdr(skb)->saddr,
&ipv6_hdr(skb)->daddr, skb->csum)) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
return 0;
}
}
skb->csum = ~csum_unfold(tcp_v6_check(skb->h.th, skb->len,
skb->csum = ~csum_unfold(tcp_v6_check(tcp_hdr(skb), skb->len,
&ipv6_hdr(skb)->saddr,
&ipv6_hdr(skb)->daddr, 0));
@@ -1601,7 +1601,7 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
if (sk->sk_state == TCP_ESTABLISHED) { /* Fast path */
TCP_CHECK_TIMER(sk);
if (tcp_rcv_established(sk, skb, skb->h.th, skb->len))
if (tcp_rcv_established(sk, skb, tcp_hdr(skb), skb->len))
goto reset;
TCP_CHECK_TIMER(sk);
if (opt_skb)
@@ -1632,7 +1632,7 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
}
TCP_CHECK_TIMER(sk);
if (tcp_rcv_state_process(sk, skb, skb->h.th, skb->len))
if (tcp_rcv_state_process(sk, skb, tcp_hdr(skb), skb->len))
goto reset;
TCP_CHECK_TIMER(sk);
if (opt_skb)
@@ -1698,7 +1698,7 @@ static int tcp_v6_rcv(struct sk_buff **pskb)
if (!pskb_may_pull(skb, sizeof(struct tcphdr)))
goto discard_it;
th = skb->h.th;
th = tcp_hdr(skb);
if (th->doff < sizeof(struct tcphdr)/4)
goto bad_packet;
@@ -1709,7 +1709,7 @@ static int tcp_v6_rcv(struct sk_buff **pskb)
tcp_v6_checksum_init(skb)))
goto bad_packet;
th = skb->h.th;
th = tcp_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);