* is strict, actions are advisory and have some latency.
*/
int tcp_memory_pressure __read_mostly;
-
EXPORT_SYMBOL(tcp_memory_pressure);
void tcp_enter_memory_pressure(struct sock *sk)
tcp_memory_pressure = 1;
}
}
-
EXPORT_SYMBOL(tcp_enter_memory_pressure);
/* Convert seconds to retransmits based on initial and max timeout */
struct sock *sk = sock->sk;
struct tcp_sock *tp = tcp_sk(sk);
- sock_poll_wait(file, sk->sk_sleep, wait);
+ sock_poll_wait(file, sk_sleep(sk), wait);
if (sk->sk_state == TCP_LISTEN)
return inet_csk_listen_poll(sk);
}
return mask;
}
+EXPORT_SYMBOL(tcp_poll);
int tcp_ioctl(struct sock *sk, int cmd, unsigned long arg)
{
return put_user(answ, (int __user *)arg);
}
+EXPORT_SYMBOL(tcp_ioctl);
static inline void tcp_mark_push(struct tcp_sock *tp, struct sk_buff *skb)
{
- TCP_SKB_CB(skb)->flags |= TCPCB_FLAG_PSH;
+ TCP_SKB_CB(skb)->flags |= TCPHDR_PSH;
tp->pushed_seq = tp->write_seq;
}
skb->csum = 0;
tcb->seq = tcb->end_seq = tp->write_seq;
- tcb->flags = TCPCB_FLAG_ACK;
+ tcb->flags = TCPHDR_ACK;
tcb->sacked = 0;
skb_header_release(skb);
tcp_add_write_queue_tail(sk, skb);
return ret;
}
+EXPORT_SYMBOL(tcp_splice_read);
struct sk_buff *sk_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp)
{
skb_shinfo(skb)->gso_segs = 0;
if (!copied)
- TCP_SKB_CB(skb)->flags &= ~TCPCB_FLAG_PSH;
+ TCP_SKB_CB(skb)->flags &= ~TCPHDR_PSH;
copied += copy;
poffset += copy;
release_sock(sk);
return res;
}
+EXPORT_SYMBOL(tcp_sendpage);
#define TCP_PAGE(sk) (sk->sk_sndmsg_page)
#define TCP_OFF(sk) (sk->sk_sndmsg_off)
}
if (!copied)
- TCP_SKB_CB(skb)->flags &= ~TCPCB_FLAG_PSH;
+ TCP_SKB_CB(skb)->flags &= ~TCPHDR_PSH;
tp->write_seq += copy;
TCP_SKB_CB(skb)->end_seq += copy;
release_sock(sk);
return err;
}
+EXPORT_SYMBOL(tcp_sendmsg);
/*
* Handle reading urgent data. BSD has very simple semantics for
tcp_cleanup_rbuf(sk, copied);
return copied;
}
+EXPORT_SYMBOL(tcp_read_sock);
/*
* This routine copies from a sock struct into the user buffer.
err = tcp_recv_urg(sk, msg, len, flags);
goto out;
}
+EXPORT_SYMBOL(tcp_recvmsg);
void tcp_set_state(struct sock *sk, int state)
{
tcp_send_fin(sk);
}
}
+EXPORT_SYMBOL(tcp_shutdown);
void tcp_close(struct sock *sk, long timeout)
{
sk_mem_reclaim(sk);
+ /* If socket has been already reset (e.g. in tcp_reset()) - kill it. */
+ if (sk->sk_state == TCP_CLOSE)
+ goto adjudge_to_death;
+
/* As outlined in RFC 2525, section 2.17, we send a RST here because
* data was lost. To witness the awful effects of the old behavior of
* always doing a FIN, run an older 2.1.x kernel or 2.0.x, start a bulk
local_bh_enable();
sock_put(sk);
}
+EXPORT_SYMBOL(tcp_close);
/* These states need RST on ABORT according to RFC793 */
sk->sk_error_report(sk);
return err;
}
+EXPORT_SYMBOL(tcp_disconnect);
/*
* Socket option code for TCP.
default:
/* fallthru */
break;
- };
+ }
if (optlen < sizeof(int))
return -EINVAL;
if (sock_flag(sk, SOCK_KEEPOPEN) &&
!((1 << sk->sk_state) &
(TCPF_CLOSE | TCPF_LISTEN))) {
- __u32 elapsed = tcp_time_stamp - tp->rcv_tstamp;
+ u32 elapsed = keepalive_time_elapsed(tp);
if (tp->keepalive_time > elapsed)
elapsed = tp->keepalive_time - elapsed;
else
optval, optlen);
return do_tcp_setsockopt(sk, level, optname, optval, optlen);
}
+EXPORT_SYMBOL(tcp_setsockopt);
#ifdef CONFIG_COMPAT
int compat_tcp_setsockopt(struct sock *sk, int level, int optname,
optval, optlen);
return do_tcp_setsockopt(sk, level, optname, optval, optlen);
}
-
EXPORT_SYMBOL(compat_tcp_setsockopt);
#endif
info->tcpi_total_retrans = tp->total_retrans;
}
-
EXPORT_SYMBOL_GPL(tcp_get_info);
static int do_tcp_getsockopt(struct sock *sk, int level,
optval, optlen);
return do_tcp_getsockopt(sk, level, optname, optval, optlen);
}
+EXPORT_SYMBOL(tcp_getsockopt);
#ifdef CONFIG_COMPAT
int compat_tcp_getsockopt(struct sock *sk, int level, int optname,
optval, optlen);
return do_tcp_getsockopt(sk, level, optname, optval, optlen);
}
-
EXPORT_SYMBOL(compat_tcp_getsockopt);
#endif
struct tcphdr *th2;
unsigned int len;
unsigned int thlen;
- unsigned int flags;
+ __be32 flags;
unsigned int mss = 1;
unsigned int hlen;
unsigned int off;
found:
flush = NAPI_GRO_CB(p)->flush;
- flush |= flags & TCP_FLAG_CWR;
- flush |= (flags ^ tcp_flag_word(th2)) &
- ~(TCP_FLAG_CWR | TCP_FLAG_FIN | TCP_FLAG_PSH);
- flush |= th->ack_seq ^ th2->ack_seq;
+ flush |= (__force int)(flags & TCP_FLAG_CWR);
+ flush |= (__force int)((flags ^ tcp_flag_word(th2)) &
+ ~(TCP_FLAG_CWR | TCP_FLAG_FIN | TCP_FLAG_PSH));
+ flush |= (__force int)(th->ack_seq ^ th2->ack_seq);
for (i = sizeof(*th); i < thlen; i += 4)
flush |= *(u32 *)((u8 *)th + i) ^
*(u32 *)((u8 *)th2 + i);
out_check_final:
flush = len < mss;
- flush |= flags & (TCP_FLAG_URG | TCP_FLAG_PSH | TCP_FLAG_RST |
- TCP_FLAG_SYN | TCP_FLAG_FIN);
+ flush |= (__force int)(flags & (TCP_FLAG_URG | TCP_FLAG_PSH |
+ TCP_FLAG_RST | TCP_FLAG_SYN |
+ TCP_FLAG_FIN));
if (p && (!NAPI_GRO_CB(skb)->same_flow || flush))
pp = head;
if (pool)
__tcp_free_md5sig_pool(pool);
}
-
EXPORT_SYMBOL(tcp_free_md5sig_pool);
static struct tcp_md5sig_pool * __percpu *
}
return pool;
}
-
EXPORT_SYMBOL(tcp_alloc_md5sig_pool);
spin_unlock(&tcp_md5sig_pool_lock);
if (p)
- return *per_cpu_ptr(p, smp_processor_id());
+ return *this_cpu_ptr(p);
local_bh_enable();
return NULL;
th->check = old_checksum;
return err;
}
-
EXPORT_SYMBOL(tcp_md5_hash_header);
int tcp_md5_hash_skb_data(struct tcp_md5sig_pool *hp,
const unsigned head_data_len = skb_headlen(skb) > header_len ?
skb_headlen(skb) - header_len : 0;
const struct skb_shared_info *shi = skb_shinfo(skb);
+ struct sk_buff *frag_iter;
sg_init_table(&sg, 1);
return 1;
}
+ skb_walk_frags(skb, frag_iter)
+ if (tcp_md5_hash_skb_data(hp, frag_iter, 0))
+ return 1;
+
return 0;
}
-
EXPORT_SYMBOL(tcp_md5_hash_skb_data);
int tcp_md5_hash_key(struct tcp_md5sig_pool *hp, struct tcp_md5sig_key *key)
sg_init_one(&sg, key->key, key->keylen);
return crypto_hash_update(&hp->md5_desc, &sg, key->keylen);
}
-
EXPORT_SYMBOL(tcp_md5_hash_key);
#endif
tcp_secret_retiring = &tcp_secret_two;
tcp_secret_secondary = &tcp_secret_two;
}
-
-EXPORT_SYMBOL(tcp_close);
-EXPORT_SYMBOL(tcp_disconnect);
-EXPORT_SYMBOL(tcp_getsockopt);
-EXPORT_SYMBOL(tcp_ioctl);
-EXPORT_SYMBOL(tcp_poll);
-EXPORT_SYMBOL(tcp_read_sock);
-EXPORT_SYMBOL(tcp_recvmsg);
-EXPORT_SYMBOL(tcp_sendmsg);
-EXPORT_SYMBOL(tcp_splice_read);
-EXPORT_SYMBOL(tcp_sendpage);
-EXPORT_SYMBOL(tcp_setsockopt);
-EXPORT_SYMBOL(tcp_shutdown);
projects / linux-block.git / blobdiff