#include <linux/jhash.h>
#include <linux/init.h>
#include <linux/times.h>
+#include <linux/slab.h>
#include <net/net_namespace.h>
#include <net/icmp.h>
#include <net/timewait_sock.h>
#include <net/xfrm.h>
#include <net/netdma.h>
+#include <net/secure_seq.h>
#include <linux/inet.h>
#include <linux/ipv6.h>
int sysctl_tcp_tw_reuse __read_mostly;
int sysctl_tcp_low_latency __read_mostly;
+EXPORT_SYMBOL(sysctl_tcp_low_latency);
#ifdef CONFIG_TCP_MD5SIG
#endif
struct inet_hashinfo tcp_hashinfo;
+EXPORT_SYMBOL(tcp_hashinfo);
static inline __u32 tcp_v4_init_sequence(struct sk_buff *skb)
{
return 0;
}
-
EXPORT_SYMBOL_GPL(tcp_twsk_unique);
/* This will initiate an outgoing connection. */
* TIME-WAIT * and initialize rx_opt.ts_recent from it,
* when trying new connection.
*/
- if (peer != NULL &&
- (u32)get_seconds() - peer->tcp_ts_stamp <= TCP_PAWS_MSL) {
- tp->rx_opt.ts_recent_stamp = peer->tcp_ts_stamp;
- tp->rx_opt.ts_recent = peer->tcp_ts;
+ if (peer) {
+ inet_peer_refcheck(peer);
+ if ((u32)get_seconds() - peer->tcp_ts_stamp <= TCP_PAWS_MSL) {
+ tp->rx_opt.ts_recent_stamp = peer->tcp_ts_stamp;
+ tp->rx_opt.ts_recent = peer->tcp_ts;
+ }
}
}
/* OK, now commit destination to socket. */
sk->sk_gso_type = SKB_GSO_TCPV4;
- sk_setup_caps(sk, &rt->u.dst);
+ sk_setup_caps(sk, &rt->dst);
if (!tp->write_seq)
tp->write_seq = secure_tcp_sequence_number(inet->inet_saddr,
inet->inet_dport = 0;
return err;
}
+EXPORT_SYMBOL(tcp_v4_connect);
/*
* This routine does path mtu discovery as defined in RFC1191.
if (sk->sk_state == TCP_CLOSE)
goto out;
+ if (unlikely(iph->ttl < inet_sk(sk)->min_ttl)) {
+ NET_INC_STATS_BH(net, LINUX_MIB_TCPMINTTLDROP);
+ goto out;
+ }
+
icsk = inet_csk(sk);
tp = tcp_sk(sk);
seq = ntohl(th->seq);
!icsk->icsk_backoff)
break;
+ if (sock_owned_by_user(sk))
+ break;
+
icsk->icsk_backoff--;
inet_csk(sk)->icsk_rto = __tcp_set_rto(tp) <<
icsk->icsk_backoff;
if (remaining) {
inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS,
remaining, TCP_RTO_MAX);
- } else if (sock_owned_by_user(sk)) {
- /* RTO revert clocked out retransmission,
- * but socket is locked. Will defer. */
- inet_csk_reset_xmit_timer(sk, ICSK_TIME_RETRANS,
- HZ/20, TCP_RTO_MAX);
} else {
/* RTO revert clocked out retransmission.
* Will retransmit now */
sock_put(sk);
}
-/* This routine computes an IPv4 TCP checksum. */
-void tcp_v4_send_check(struct sock *sk, int len, struct sk_buff *skb)
+static void __tcp_v4_send_check(struct sk_buff *skb,
+ __be32 saddr, __be32 daddr)
{
- struct inet_sock *inet = inet_sk(sk);
struct tcphdr *th = tcp_hdr(skb);
if (skb->ip_summed == CHECKSUM_PARTIAL) {
- th->check = ~tcp_v4_check(len, inet->inet_saddr,
- inet->inet_daddr, 0);
+ th->check = ~tcp_v4_check(skb->len, saddr, daddr, 0);
skb->csum_start = skb_transport_header(skb) - skb->head;
skb->csum_offset = offsetof(struct tcphdr, check);
} else {
- th->check = tcp_v4_check(len, inet->inet_saddr,
- inet->inet_daddr,
+ th->check = tcp_v4_check(skb->len, saddr, daddr,
csum_partial(th,
th->doff << 2,
skb->csum));
}
}
+/* This routine computes an IPv4 TCP checksum. */
+void tcp_v4_send_check(struct sock *sk, struct sk_buff *skb)
+{
+ struct inet_sock *inet = inet_sk(sk);
+
+ __tcp_v4_send_check(skb, inet->inet_saddr, inet->inet_daddr);
+}
+EXPORT_SYMBOL(tcp_v4_send_check);
+
int tcp_v4_gso_send_check(struct sk_buff *skb)
{
const struct iphdr *iph;
th = tcp_hdr(skb);
th->check = 0;
- th->check = ~tcp_v4_check(skb->len, iph->saddr, iph->daddr, 0);
- skb->csum_start = skb_transport_header(skb) - skb->head;
- skb->csum_offset = offsetof(struct tcphdr, check);
skb->ip_summed = CHECKSUM_PARTIAL;
+ __tcp_v4_send_check(skb, iph->saddr, iph->daddr);
return 0;
}
skb = tcp_make_synack(sk, dst, req, rvp);
if (skb) {
- struct tcphdr *th = tcp_hdr(skb);
-
- th->check = tcp_v4_check(skb->len,
- ireq->loc_addr,
- ireq->rmt_addr,
- csum_partial(th, skb->len,
- skb->csum));
+ __tcp_v4_send_check(skb, ireq->loc_addr, ireq->rmt_addr);
err = ip_build_and_send_pkt(skb, sk, ireq->loc_addr,
ireq->rmt_addr,
kfree(inet_rsk(req)->opt);
}
-#ifdef CONFIG_SYN_COOKIES
-static void syn_flood_warning(struct sk_buff *skb)
+static void syn_flood_warning(const struct sk_buff *skb)
{
- static unsigned long warntime;
+ const char *msg;
- if (time_after(jiffies, (warntime + HZ * 60))) {
- warntime = jiffies;
- printk(KERN_INFO
- "possible SYN flooding on port %d. Sending cookies.\n",
- ntohs(tcp_hdr(skb)->dest));
- }
-}
+#ifdef CONFIG_SYN_COOKIES
+ if (sysctl_tcp_syncookies)
+ msg = "Sending cookies";
+ else
#endif
+ msg = "Dropping request";
+
+ pr_info("TCP: Possible SYN flooding on port %d. %s.\n",
+ ntohs(tcp_hdr(skb)->dest), msg);
+}
/*
* Save and compile IPv4 options into the request_sock if needed.
{
return tcp_v4_md5_do_lookup(sk, inet_sk(addr_sk)->inet_daddr);
}
-
EXPORT_SYMBOL(tcp_v4_md5_lookup);
static struct tcp_md5sig_key *tcp_v4_reqsk_md5_lookup(struct sock *sk,
kfree(newkey);
return -ENOMEM;
}
- sk->sk_route_caps &= ~NETIF_F_GSO_MASK;
+ sk_nocaps_add(sk, NETIF_F_GSO_MASK);
}
if (tcp_alloc_md5sig_pool(sk) == NULL) {
kfree(newkey);
}
return 0;
}
-
EXPORT_SYMBOL(tcp_v4_md5_do_add);
static int tcp_v4_md5_add_func(struct sock *sk, struct sock *addr_sk,
}
return -ENOENT;
}
-
EXPORT_SYMBOL(tcp_v4_md5_do_del);
static void tcp_v4_clear_md5_list(struct sock *sk)
return -EINVAL;
tp->md5sig_info = p;
- sk->sk_route_caps &= ~NETIF_F_GSO_MASK;
+ sk_nocaps_add(sk, NETIF_F_GSO_MASK);
}
newkey = kmemdup(cmd.tcpm_key, cmd.tcpm_keylen, sk->sk_allocation);
memset(md5_hash, 0, 16);
return 1;
}
-
EXPORT_SYMBOL(tcp_v4_md5_hash_skb);
static int tcp_v4_inbound_md5_hash(struct sock *sk, struct sk_buff *skb)
};
#endif
-static struct timewait_sock_ops tcp_timewait_sock_ops = {
- .twsk_obj_size = sizeof(struct tcp_timewait_sock),
- .twsk_unique = tcp_twsk_unique,
- .twsk_destructor= tcp_twsk_destructor,
-};
-
int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
{
struct tcp_extend_values tmp_ext;
* evidently real one.
*/
if (inet_csk_reqsk_queue_is_full(sk) && !isn) {
+ if (net_ratelimit())
+ syn_flood_warning(skb);
#ifdef CONFIG_SYN_COOKIES
if (sysctl_tcp_syncookies) {
want_cookie = 1;
goto drop_and_release;
/* Secret recipe starts with IP addresses */
- *mess++ ^= daddr;
- *mess++ ^= saddr;
+ *mess++ ^= (__force u32)daddr;
+ *mess++ ^= (__force u32)saddr;
/* plus variable length Initiator Cookie */
c = (u8 *)mess;
if (security_inet_conn_request(sk, skb, req))
goto drop_and_free;
- if (!want_cookie)
+ if (!want_cookie || tmp_opt.tstamp_ok)
TCP_ECN_create_request(req, tcp_hdr(skb));
if (want_cookie) {
-#ifdef CONFIG_SYN_COOKIES
- syn_flood_warning(skb);
- req->cookie_ts = tmp_opt.tstamp_ok;
-#endif
isn = cookie_v4_init_sequence(sk, skb, &req->mss);
+ req->cookie_ts = tmp_opt.tstamp_ok;
} else if (!isn) {
struct inet_peer *peer = NULL;
tcp_death_row.sysctl_tw_recycle &&
(dst = inet_csk_route_req(sk, req)) != NULL &&
(peer = rt_get_peer((struct rtable *)dst)) != NULL &&
- peer->v4daddr == saddr) {
+ peer->daddr.a4 == saddr) {
+ inet_peer_refcheck(peer);
if ((u32)get_seconds() - peer->tcp_ts_stamp < TCP_PAWS_MSL &&
(s32)(peer->tcp_ts - req->ts_recent) >
TCP_PAWS_WINDOW) {
drop:
return 0;
}
+EXPORT_SYMBOL(tcp_v4_conn_request);
/*
newsk = tcp_create_openreq_child(sk, req, skb);
if (!newsk)
- goto exit;
+ goto exit_nonewsk;
newsk->sk_gso_type = SKB_GSO_TCPV4;
sk_setup_caps(newsk, dst);
tcp_mtup_init(newsk);
tcp_sync_mss(newsk, dst_mtu(dst));
- newtp->advmss = dst_metric(dst, RTAX_ADVMSS);
+ newtp->advmss = dst_metric_advmss(dst);
if (tcp_sk(sk)->rx_opt.user_mss &&
tcp_sk(sk)->rx_opt.user_mss < newtp->advmss)
newtp->advmss = tcp_sk(sk)->rx_opt.user_mss;
if (newkey != NULL)
tcp_v4_md5_do_add(newsk, newinet->inet_daddr,
newkey, key->keylen);
- newsk->sk_route_caps &= ~NETIF_F_GSO_MASK;
+ sk_nocaps_add(newsk, NETIF_F_GSO_MASK);
}
#endif
+ if (__inet_inherit_port(sk, newsk) < 0) {
+ sock_put(newsk);
+ goto exit;
+ }
__inet_hash_nolisten(newsk, NULL);
- __inet_inherit_port(sk, newsk);
return newsk;
exit_overflow:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS);
+exit_nonewsk:
+ dst_release(dst);
exit:
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);
- dst_release(dst);
return NULL;
}
+EXPORT_SYMBOL(tcp_v4_syn_recv_sock);
static struct sock *tcp_v4_hnd_req(struct sock *sk, struct sk_buff *skb)
{
}
#ifdef CONFIG_SYN_COOKIES
- if (!th->rst && !th->syn && th->ack)
+ if (!th->syn)
sk = cookie_v4_check(sk, skb, &(IPCB(skb)->opt));
#endif
return sk;
#endif
if (sk->sk_state == TCP_ESTABLISHED) { /* Fast path */
+ sock_rps_save_rxhash(sk, skb->rxhash);
TCP_CHECK_TIMER(sk);
if (tcp_rcv_established(sk, skb, tcp_hdr(skb), skb->len)) {
rsk = sk;
}
return 0;
}
- }
+ } else
+ sock_rps_save_rxhash(sk, skb->rxhash);
+
TCP_CHECK_TIMER(sk);
if (tcp_rcv_state_process(sk, skb, tcp_hdr(skb), skb->len)) {
TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_INERRS);
goto discard;
}
+EXPORT_SYMBOL(tcp_v4_do_rcv);
/*
* From tcp_input.c
if (!sk)
goto no_tcp_socket;
- if (iph->ttl < inet_sk(sk)->min_ttl)
- goto discard_and_relse;
-
process:
if (sk->sk_state == TCP_TIME_WAIT)
goto do_time_wait;
+ if (unlikely(iph->ttl < inet_sk(sk)->min_ttl)) {
+ NET_INC_STATS_BH(net, LINUX_MIB_TCPMINTTLDROP);
+ goto discard_and_relse;
+ }
+
if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb))
goto discard_and_relse;
nf_reset(skb);
if (!tcp_prequeue(sk, skb))
ret = tcp_v4_do_rcv(sk, skb);
}
- } else
- sk_add_backlog(sk, skb);
+ } else if (unlikely(sk_add_backlog(sk, skb))) {
+ bh_unlock_sock(sk);
+ NET_INC_STATS_BH(net, LINUX_MIB_TCPBACKLOGDROP);
+ goto discard_and_relse;
+ }
bh_unlock_sock(sk);
sock_put(sk);
goto discard_it;
}
-/* VJ's idea. Save last timestamp seen from this destination
- * and hold it at least for normal timewait interval to use for duplicate
- * segment detection in subsequent connections, before they enter synchronized
- * state.
- */
-
-int tcp_v4_remember_stamp(struct sock *sk)
+struct inet_peer *tcp_v4_get_peer(struct sock *sk, bool *release_it)
{
+ struct rtable *rt = (struct rtable *) __sk_dst_get(sk);
struct inet_sock *inet = inet_sk(sk);
- struct tcp_sock *tp = tcp_sk(sk);
- struct rtable *rt = (struct rtable *)__sk_dst_get(sk);
- struct inet_peer *peer = NULL;
- int release_it = 0;
+ struct inet_peer *peer;
if (!rt || rt->rt_dst != inet->inet_daddr) {
- peer = inet_getpeer(inet->inet_daddr, 1);
- release_it = 1;
+ peer = inet_getpeer_v4(inet->inet_daddr, 1);
+ *release_it = true;
} else {
if (!rt->peer)
rt_bind_peer(rt, 1);
peer = rt->peer;
+ *release_it = false;
}
- if (peer) {
- if ((s32)(peer->tcp_ts - tp->rx_opt.ts_recent) <= 0 ||
- ((u32)get_seconds() - peer->tcp_ts_stamp > TCP_PAWS_MSL &&
- peer->tcp_ts_stamp <= (u32)tp->rx_opt.ts_recent_stamp)) {
- peer->tcp_ts_stamp = (u32)tp->rx_opt.ts_recent_stamp;
- peer->tcp_ts = tp->rx_opt.ts_recent;
- }
- if (release_it)
- inet_putpeer(peer);
- return 1;
- }
-
- return 0;
+ return peer;
}
+EXPORT_SYMBOL(tcp_v4_get_peer);
-int tcp_v4_tw_remember_stamp(struct inet_timewait_sock *tw)
+void *tcp_v4_tw_get_peer(struct sock *sk)
{
- struct inet_peer *peer = inet_getpeer(tw->tw_daddr, 1);
-
- if (peer) {
- const struct tcp_timewait_sock *tcptw = tcp_twsk((struct sock *)tw);
-
- if ((s32)(peer->tcp_ts - tcptw->tw_ts_recent) <= 0 ||
- ((u32)get_seconds() - peer->tcp_ts_stamp > TCP_PAWS_MSL &&
- peer->tcp_ts_stamp <= (u32)tcptw->tw_ts_recent_stamp)) {
- peer->tcp_ts_stamp = (u32)tcptw->tw_ts_recent_stamp;
- peer->tcp_ts = tcptw->tw_ts_recent;
- }
- inet_putpeer(peer);
- return 1;
- }
+ struct inet_timewait_sock *tw = inet_twsk(sk);
- return 0;
+ return inet_getpeer_v4(tw->tw_daddr, 1);
}
+EXPORT_SYMBOL(tcp_v4_tw_get_peer);
+
+static struct timewait_sock_ops tcp_timewait_sock_ops = {
+ .twsk_obj_size = sizeof(struct tcp_timewait_sock),
+ .twsk_unique = tcp_twsk_unique,
+ .twsk_destructor= tcp_twsk_destructor,
+ .twsk_getpeer = tcp_v4_tw_get_peer,
+};
const struct inet_connection_sock_af_ops ipv4_specific = {
.queue_xmit = ip_queue_xmit,
.rebuild_header = inet_sk_rebuild_header,
.conn_request = tcp_v4_conn_request,
.syn_recv_sock = tcp_v4_syn_recv_sock,
- .remember_stamp = tcp_v4_remember_stamp,
+ .get_peer = tcp_v4_get_peer,
.net_header_len = sizeof(struct iphdr),
.setsockopt = ip_setsockopt,
.getsockopt = ip_getsockopt,
.compat_getsockopt = compat_ip_getsockopt,
#endif
};
+EXPORT_SYMBOL(ipv4_specific);
#ifdef CONFIG_TCP_MD5SIG
static const struct tcp_sock_af_ops tcp_sock_ipv4_specific = {
percpu_counter_dec(&tcp_sockets_allocated);
}
-
EXPORT_SYMBOL(tcp_v4_destroy_sock);
#ifdef CONFIG_PROC_FS
hlist_nulls_entry(tw->tw_node.next, typeof(*tw), tw_node) : NULL;
}
+/*
+ * Get next listener socket follow cur. If cur is NULL, get first socket
+ * starting from bucket given in st->bucket; when st->bucket is zero the
+ * very first socket in the hash table is returned.
+ */
static void *listening_get_next(struct seq_file *seq, void *cur)
{
struct inet_connection_sock *icsk;
struct net *net = seq_file_net(seq);
if (!sk) {
- st->bucket = 0;
- ilb = &tcp_hashinfo.listening_hash[0];
+ ilb = &tcp_hashinfo.listening_hash[st->bucket];
spin_lock_bh(&ilb->lock);
sk = sk_nulls_head(&ilb->head);
+ st->offset = 0;
goto get_sk;
}
ilb = &tcp_hashinfo.listening_hash[st->bucket];
++st->num;
+ ++st->offset;
if (st->state == TCP_SEQ_STATE_OPENREQ) {
struct request_sock *req = cur;
get_req:
req = icsk->icsk_accept_queue.listen_opt->syn_table[st->sbucket];
}
- sk = sk_next(st->syn_wait_sk);
+ sk = sk_nulls_next(st->syn_wait_sk);
st->state = TCP_SEQ_STATE_LISTENING;
read_unlock_bh(&icsk->icsk_accept_queue.syn_wait_lock);
} else {
if (reqsk_queue_len(&icsk->icsk_accept_queue))
goto start_req;
read_unlock_bh(&icsk->icsk_accept_queue.syn_wait_lock);
- sk = sk_next(sk);
+ sk = sk_nulls_next(sk);
}
get_sk:
sk_nulls_for_each_from(sk, node) {
- if (sk->sk_family == st->family && net_eq(sock_net(sk), net)) {
+ if (!net_eq(sock_net(sk), net))
+ continue;
+ if (sk->sk_family == st->family) {
cur = sk;
goto out;
}
read_unlock_bh(&icsk->icsk_accept_queue.syn_wait_lock);
}
spin_unlock_bh(&ilb->lock);
+ st->offset = 0;
if (++st->bucket < INET_LHTABLE_SIZE) {
ilb = &tcp_hashinfo.listening_hash[st->bucket];
spin_lock_bh(&ilb->lock);
static void *listening_get_idx(struct seq_file *seq, loff_t *pos)
{
- void *rc = listening_get_next(seq, NULL);
+ struct tcp_iter_state *st = seq->private;
+ void *rc;
+
+ st->bucket = 0;
+ st->offset = 0;
+ rc = listening_get_next(seq, NULL);
while (rc && *pos) {
rc = listening_get_next(seq, rc);
hlist_nulls_empty(&tcp_hashinfo.ehash[st->bucket].twchain);
}
+/*
+ * Get first established socket starting from bucket given in st->bucket.
+ * If st->bucket is zero, the very first socket in the hash is returned.
+ */
static void *established_get_first(struct seq_file *seq)
{
struct tcp_iter_state *st = seq->private;
struct net *net = seq_file_net(seq);
void *rc = NULL;
- for (st->bucket = 0; st->bucket <= tcp_hashinfo.ehash_mask; ++st->bucket) {
+ st->offset = 0;
+ for (; st->bucket <= tcp_hashinfo.ehash_mask; ++st->bucket) {
struct sock *sk;
struct hlist_nulls_node *node;
struct inet_timewait_sock *tw;
struct net *net = seq_file_net(seq);
++st->num;
+ ++st->offset;
if (st->state == TCP_SEQ_STATE_TIME_WAIT) {
tw = cur;
st->state = TCP_SEQ_STATE_ESTABLISHED;
/* Look for next non empty bucket */
+ st->offset = 0;
while (++st->bucket <= tcp_hashinfo.ehash_mask &&
empty_bucket(st))
;
static void *established_get_idx(struct seq_file *seq, loff_t pos)
{
- void *rc = established_get_first(seq);
+ struct tcp_iter_state *st = seq->private;
+ void *rc;
+
+ st->bucket = 0;
+ rc = established_get_first(seq);
while (rc && pos) {
rc = established_get_next(seq, rc);
return rc;
}
+static void *tcp_seek_last_pos(struct seq_file *seq)
+{
+ struct tcp_iter_state *st = seq->private;
+ int offset = st->offset;
+ int orig_num = st->num;
+ void *rc = NULL;
+
+ switch (st->state) {
+ case TCP_SEQ_STATE_OPENREQ:
+ case TCP_SEQ_STATE_LISTENING:
+ if (st->bucket >= INET_LHTABLE_SIZE)
+ break;
+ st->state = TCP_SEQ_STATE_LISTENING;
+ rc = listening_get_next(seq, NULL);
+ while (offset-- && rc)
+ rc = listening_get_next(seq, rc);
+ if (rc)
+ break;
+ st->bucket = 0;
+ /* Fallthrough */
+ case TCP_SEQ_STATE_ESTABLISHED:
+ case TCP_SEQ_STATE_TIME_WAIT:
+ st->state = TCP_SEQ_STATE_ESTABLISHED;
+ if (st->bucket > tcp_hashinfo.ehash_mask)
+ break;
+ rc = established_get_first(seq);
+ while (offset-- && rc)
+ rc = established_get_next(seq, rc);
+ }
+
+ st->num = orig_num;
+
+ return rc;
+}
+
static void *tcp_seq_start(struct seq_file *seq, loff_t *pos)
{
struct tcp_iter_state *st = seq->private;
+ void *rc;
+
+ if (*pos && *pos == st->last_pos) {
+ rc = tcp_seek_last_pos(seq);
+ if (rc)
+ goto out;
+ }
+
st->state = TCP_SEQ_STATE_LISTENING;
st->num = 0;
- return *pos ? tcp_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
+ st->bucket = 0;
+ st->offset = 0;
+ rc = *pos ? tcp_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
+
+out:
+ st->last_pos = *pos;
+ return rc;
}
static void *tcp_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
+ struct tcp_iter_state *st = seq->private;
void *rc = NULL;
- struct tcp_iter_state *st;
if (v == SEQ_START_TOKEN) {
rc = tcp_get_idx(seq, 0);
goto out;
}
- st = seq->private;
switch (st->state) {
case TCP_SEQ_STATE_OPENREQ:
rc = listening_get_next(seq, v);
if (!rc) {
st->state = TCP_SEQ_STATE_ESTABLISHED;
+ st->bucket = 0;
+ st->offset = 0;
rc = established_get_first(seq);
}
break;
}
out:
++*pos;
+ st->last_pos = *pos;
return rc;
}
s = ((struct seq_file *)file->private_data)->private;
s->family = afinfo->family;
+ s->last_pos = 0;
return 0;
}
rc = -ENOMEM;
return rc;
}
+EXPORT_SYMBOL(tcp_proc_register);
void tcp_proc_unregister(struct net *net, struct tcp_seq_afinfo *afinfo)
{
proc_net_remove(net, afinfo->name);
}
+EXPORT_SYMBOL(tcp_proc_unregister);
static void get_openreq4(struct sock *sk, struct request_sock *req,
struct seq_file *f, int i, int uid, int *len)
int ttd = req->expires - jiffies;
seq_printf(f, "%4d: %08X:%04X %08X:%04X"
- " %02X %08X:%08X %02X:%08lX %08X %5d %8d %u %d %p%n",
+ " %02X %08X:%08X %02X:%08lX %08X %5d %8d %u %d %pK%n",
i,
ireq->loc_addr,
ntohs(inet_sk(sk)->inet_sport),
rx_queue = max_t(int, tp->rcv_nxt - tp->copied_seq, 0);
seq_printf(f, "%4d: %08X:%04X %08X:%04X %02X %08X:%08X %02X:%08lX "
- "%08X %5d %8d %lu %d %p %lu %lu %u %u %d%n",
+ "%08X %5d %8d %lu %d %pK %lu %lu %u %u %d%n",
i, src, srcp, dest, destp, sk->sk_state,
tp->write_seq - tp->snd_una,
rx_queue,
srcp = ntohs(tw->tw_sport);
seq_printf(f, "%4d: %08X:%04X %08X:%04X"
- " %02X %08X:%08X %02X:%08lX %08X %5d %8d %d %d %p%n",
+ " %02X %08X:%08X %02X:%08lX %08X %5d %8d %d %d %pK%n",
i, src, srcp, dest, destp, tw->tw_substate, 0, 0,
3, jiffies_to_clock_t(ttd), 0, 0, 0, 0,
atomic_read(&tw->tw_refcnt), tw, len);
},
};
-static int tcp4_proc_init_net(struct net *net)
+static int __net_init tcp4_proc_init_net(struct net *net)
{
return tcp_proc_register(net, &tcp4_seq_afinfo);
}
-static void tcp4_proc_exit_net(struct net *net)
+static void __net_exit tcp4_proc_exit_net(struct net *net)
{
tcp_proc_unregister(net, &tcp4_seq_afinfo);
}
return tcp_gro_receive(head, skb);
}
-EXPORT_SYMBOL(tcp4_gro_receive);
int tcp4_gro_complete(struct sk_buff *skb)
{
return tcp_gro_complete(skb);
}
-EXPORT_SYMBOL(tcp4_gro_complete);
struct proto tcp_prot = {
.name = "TCP",
.setsockopt = tcp_setsockopt,
.getsockopt = tcp_getsockopt,
.recvmsg = tcp_recvmsg,
+ .sendmsg = tcp_sendmsg,
+ .sendpage = tcp_sendpage,
.backlog_rcv = tcp_v4_do_rcv,
.hash = inet_hash,
.unhash = inet_unhash,
.twsk_prot = &tcp_timewait_sock_ops,
.rsk_prot = &tcp_request_sock_ops,
.h.hashinfo = &tcp_hashinfo,
+ .no_autobind = true,
#ifdef CONFIG_COMPAT
.compat_setsockopt = compat_tcp_setsockopt,
.compat_getsockopt = compat_tcp_getsockopt,
#endif
};
+EXPORT_SYMBOL(tcp_prot);
static int __net_init tcp_sk_init(struct net *net)
if (register_pernet_subsys(&tcp_sk_ops))
panic("Failed to create the TCP control socket.\n");
}
-
-EXPORT_SYMBOL(ipv4_specific);
-EXPORT_SYMBOL(tcp_hashinfo);
-EXPORT_SYMBOL(tcp_prot);
-EXPORT_SYMBOL(tcp_v4_conn_request);
-EXPORT_SYMBOL(tcp_v4_connect);
-EXPORT_SYMBOL(tcp_v4_do_rcv);
-EXPORT_SYMBOL(tcp_v4_remember_stamp);
-EXPORT_SYMBOL(tcp_v4_send_check);
-EXPORT_SYMBOL(tcp_v4_syn_recv_sock);
-
-#ifdef CONFIG_PROC_FS
-EXPORT_SYMBOL(tcp_proc_register);
-EXPORT_SYMBOL(tcp_proc_unregister);
-#endif
-EXPORT_SYMBOL(sysctl_tcp_low_latency);
-
projects / linux-flexiantxendom0-natty.git / blobdiff