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tcp: Move rcvq sending to tcp_input.c 

It actually works on the input queue and will use its read mem
routines, thus it's better to have in in the tcp_input.c file.

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2012-05-10 01:49:41 +00:00 committed by David S. Miller
parent 74e04aca1a
commit 292e8d8c85
3 changed files with 35 additions and 36 deletions
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3
include/net/tcp.h
View File

@ -432,8 +432,7 @@ extern int tcp_disconnect(struct sock *sk, int flags);
void tcp_connect_init(struct sock *sk);
void tcp_finish_connect(struct sock *sk, struct sk_buff *skb);
int __must_check tcp_queue_rcv(struct sock *sk, struct sk_buff *skb,
int hdrlen, bool *fragstolen);
int tcp_send_rcvq(struct sock *sk, struct msghdr *msg, size_t size);
/* From syncookies.c */
extern __u32 syncookie_secret[2][16-4+SHA_DIGEST_WORDS];

33
net/ipv4/tcp.c
View File

@ -978,39 +978,6 @@ static inline int select_size(const struct sock *sk, bool sg)
return tmp;
}
static int tcp_send_rcvq(struct sock *sk, struct msghdr *msg, size_t size)
{
struct sk_buff *skb;
struct tcphdr *th;
bool fragstolen;
skb = alloc_skb(size + sizeof(*th), sk->sk_allocation);
if (!skb)
goto err;
th = (struct tcphdr *)skb_put(skb, sizeof(*th));
skb_reset_transport_header(skb);
memset(th, 0, sizeof(*th));
if (memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size))
goto err_free;
TCP_SKB_CB(skb)->seq = tcp_sk(sk)->rcv_nxt;
TCP_SKB_CB(skb)->end_seq = TCP_SKB_CB(skb)->seq + size;
TCP_SKB_CB(skb)->ack_seq = tcp_sk(sk)->snd_una - 1;
if (tcp_queue_rcv(sk, skb, sizeof(*th), &fragstolen)) {
WARN_ON_ONCE(fragstolen); /* should not happen */
__kfree_skb(skb);
}
return size;
err_free:
kfree_skb(skb);
err:
return -ENOMEM;
}
int tcp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
size_t size)
{

35
net/ipv4/tcp_input.c
View File

@ -4746,7 +4746,7 @@ end:
skb_set_owner_r(skb, sk);
}
int tcp_queue_rcv(struct sock *sk, struct sk_buff *skb, int hdrlen,
static int __must_check tcp_queue_rcv(struct sock *sk, struct sk_buff *skb, int hdrlen,
bool *fragstolen)
{
int eaten;
@ -4763,6 +4763,39 @@ int tcp_queue_rcv(struct sock *sk, struct sk_buff *skb, int hdrlen,
return eaten;
}
int tcp_send_rcvq(struct sock *sk, struct msghdr *msg, size_t size)
{
struct sk_buff *skb;
struct tcphdr *th;
bool fragstolen;
skb = alloc_skb(size + sizeof(*th), sk->sk_allocation);
if (!skb)
goto err;
th = (struct tcphdr *)skb_put(skb, sizeof(*th));
skb_reset_transport_header(skb);
memset(th, 0, sizeof(*th));
if (memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size))
goto err_free;
TCP_SKB_CB(skb)->seq = tcp_sk(sk)->rcv_nxt;
TCP_SKB_CB(skb)->end_seq = TCP_SKB_CB(skb)->seq + size;
TCP_SKB_CB(skb)->ack_seq = tcp_sk(sk)->snd_una - 1;
if (tcp_queue_rcv(sk, skb, sizeof(*th), &fragstolen)) {
WARN_ON_ONCE(fragstolen); /* should not happen */
__kfree_skb(skb);
}
return size;
err_free:
kfree_skb(skb);
err:
return -ENOMEM;
}
static void tcp_data_queue(struct sock *sk, struct sk_buff *skb)
{
const struct tcphdr *th = tcp_hdr(skb);