static inline __u32 tcp_v4_init_sequence(struct sk_buff *skb)
{
- return secure_tcp_sequence_number(skb->nh.iph->daddr,
- skb->nh.iph->saddr,
- skb->h.th->dest,
- skb->h.th->source);
+ return secure_tcp_sequence_number(ip_hdr(skb)->daddr,
+ ip_hdr(skb)->saddr,
+ tcp_hdr(skb)->dest,
+ tcp_hdr(skb)->source);
}
int tcp_twsk_unique(struct sock *sk, struct sock *sktw, void *twp)
*/
if (tcptw->tw_ts_recent_stamp &&
(twp == NULL || (sysctl_tcp_tw_reuse &&
- xtime.tv_sec - tcptw->tw_ts_recent_stamp > 1))) {
+ get_seconds() - tcptw->tw_ts_recent_stamp > 1))) {
tp->write_seq = tcptw->tw_snd_nxt + 65535 + 2;
if (tp->write_seq == 0)
tp->write_seq = 1;
* when trying new connection.
*/
if (peer != NULL &&
- peer->tcp_ts_stamp + TCP_PAWS_MSL >= xtime.tv_sec) {
+ peer->tcp_ts_stamp + TCP_PAWS_MSL >= get_seconds()) {
tp->rx_opt.ts_recent_stamp = peer->tcp_ts_stamp;
tp->rx_opt.ts_recent = peer->tcp_ts;
}
struct tcphdr *th = (struct tcphdr *)(skb->data + (iph->ihl << 2));
struct tcp_sock *tp;
struct inet_sock *inet;
- int type = skb->h.icmph->type;
- int code = skb->h.icmph->code;
+ const int type = icmp_hdr(skb)->type;
+ const int code = icmp_hdr(skb)->code;
struct sock *sk;
__u32 seq;
int err;
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,
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;
- th = skb->h.th;
+ iph = ip_hdr(skb);
+ th = tcp_hdr(skb);
th->check = 0;
th->check = ~tcp_v4_check(skb->len, iph->saddr, iph->daddr, 0);
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
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) |
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;
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)
* 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;
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;
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,
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
*/
__u8 *hash_location = NULL;
struct tcp_md5sig_key *hash_expected;
- struct iphdr *iph = skb->nh.iph;
- struct tcphdr *th = skb->h.th;
+ const struct iphdr *iph = ip_hdr(skb);
+ struct tcphdr *th = tcp_hdr(skb);
int length = (th->doff << 2) - sizeof(struct tcphdr);
int genhash;
unsigned char *ptr;
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
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
(dst = inet_csk_route_req(sk, req)) != NULL &&
(peer = rt_get_peer((struct rtable *)dst)) != NULL &&
peer->v4daddr == saddr) {
- if (xtime.tv_sec < peer->tcp_ts_stamp + TCP_PAWS_MSL &&
+ if (get_seconds() < peer->tcp_ts_stamp + TCP_PAWS_MSL &&
(s32)(peer->tcp_ts - req->ts_recent) >
TCP_PAWS_WINDOW) {
NET_INC_STATS_BH(LINUX_MIB_PAWSPASSIVEREJECTED);
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;
}
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;
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;
+ struct tcphdr *th = tcp_hdr(skb);
+ const struct iphdr *iph = ip_hdr(skb);
struct sock *nsk;
struct request_sock **prev;
/* Find possible connection requests. */
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) {
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) {
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;
}
return 0;
}
- if (skb->len < (skb->h.th->doff << 2) || tcp_checksum_complete(skb))
+ if (skb->len < tcp_hdrlen(skb) || tcp_checksum_complete(skb))
goto csum_err;
if (sk->sk_state == TCP_LISTEN) {
}
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;
}
int tcp_v4_rcv(struct sk_buff *skb)
{
+ const struct iphdr *iph;
struct tcphdr *th;
struct sock *sk;
int ret;
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;
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 +
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;
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);
if (peer) {
if ((s32)(peer->tcp_ts - tp->rx_opt.ts_recent) <= 0 ||
- (peer->tcp_ts_stamp + TCP_PAWS_MSL < xtime.tv_sec &&
+ (peer->tcp_ts_stamp + TCP_PAWS_MSL < get_seconds() &&
peer->tcp_ts_stamp <= tp->rx_opt.ts_recent_stamp)) {
peer->tcp_ts_stamp = tp->rx_opt.ts_recent_stamp;
peer->tcp_ts = tp->rx_opt.ts_recent;
const struct tcp_timewait_sock *tcptw = tcp_twsk((struct sock *)tw);
if ((s32)(peer->tcp_ts - tcptw->tw_ts_recent) <= 0 ||
- (peer->tcp_ts_stamp + TCP_PAWS_MSL < xtime.tv_sec &&
+ (peer->tcp_ts_stamp + TCP_PAWS_MSL < get_seconds() &&
peer->tcp_ts_stamp <= tcptw->tw_ts_recent_stamp)) {
peer->tcp_ts_stamp = tcptw->tw_ts_recent_stamp;
peer->tcp_ts = tcptw->tw_ts_recent;
tcp_cleanup_congestion_control(sk);
/* Cleanup up the write buffer. */
- sk_stream_writequeue_purge(sk);
+ tcp_write_queue_purge(sk);
/* Cleans up our, hopefully empty, out_of_order_queue. */
__skb_queue_purge(&tp->out_of_order_queue);
req);
}
-static void get_tcp4_sock(struct sock *sp, char *tmpbuf, int i)
+static void get_tcp4_sock(struct sock *sk, char *tmpbuf, int i)
{
int timer_active;
unsigned long timer_expires;
- struct tcp_sock *tp = tcp_sk(sp);
- const struct inet_connection_sock *icsk = inet_csk(sp);
- struct inet_sock *inet = inet_sk(sp);
+ struct tcp_sock *tp = tcp_sk(sk);
+ const struct inet_connection_sock *icsk = inet_csk(sk);
+ struct inet_sock *inet = inet_sk(sk);
__be32 dest = inet->daddr;
__be32 src = inet->rcv_saddr;
__u16 destp = ntohs(inet->dport);
} else if (icsk->icsk_pending == ICSK_TIME_PROBE0) {
timer_active = 4;
timer_expires = icsk->icsk_timeout;
- } else if (timer_pending(&sp->sk_timer)) {
+ } else if (timer_pending(&sk->sk_timer)) {
timer_active = 2;
- timer_expires = sp->sk_timer.expires;
+ timer_expires = sk->sk_timer.expires;
} else {
timer_active = 0;
timer_expires = jiffies;
sprintf(tmpbuf, "%4d: %08X:%04X %08X:%04X %02X %08X:%08X %02X:%08lX "
"%08X %5d %8d %lu %d %p %u %u %u %u %d",
- i, src, srcp, dest, destp, sp->sk_state,
+ i, src, srcp, dest, destp, sk->sk_state,
tp->write_seq - tp->snd_una,
- sp->sk_state == TCP_LISTEN ? sp->sk_ack_backlog :
+ sk->sk_state == TCP_LISTEN ? sk->sk_ack_backlog :
(tp->rcv_nxt - tp->copied_seq),
timer_active,
jiffies_to_clock_t(timer_expires - jiffies),
icsk->icsk_retransmits,
- sock_i_uid(sp),
+ sock_i_uid(sk),
icsk->icsk_probes_out,
- sock_i_ino(sp),
- atomic_read(&sp->sk_refcnt), sp,
+ sock_i_ino(sk),
+ atomic_read(&sk->sk_refcnt), sk,
icsk->icsk_rto,
icsk->icsk_ack.ato,
(icsk->icsk_ack.quick << 1) | icsk->icsk_ack.pingpong,
git.openpandora.org / pandora-kernel.git / blobdiff