RepoMirrors/mars
1
0
Fork 0
mirror of https://github.com/schoebel/mars synced 2025-01-01 11:52:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

net: find out current tcp send buffer space available

Browse Source
This commit is contained in:
Thomas Schoebel-Theuer 2013-11-22 08:09:58 +01:00 committed by Thomas Schoebel-Theuer
parent 7f86c52f7c
commit d607e422d4
2 changed files with 22 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
kernel/mars_net.c
View File

@ -374,6 +374,27 @@ done:
}
EXPORT_SYMBOL_GPL(mars_socket_is_alive);
long mars_socket_send_space_available(struct mars_socket *msock)
{
struct socket *raw_sock = msock->s_socket;
long res = 0;
if (!msock->s_alive || !raw_sock || !raw_sock->sk)
goto done;
if (unlikely(atomic_read(&msock->s_count) <= 0)) {
MARS_ERR("#%d bad nesting on msock = %p sock = %p\n", msock->s_debug_nr, msock, msock->s_socket);
goto done;
}
res = raw_sock->sk->sk_sndbuf - raw_sock->sk->sk_wmem_queued;
if (res < 0)
res = 0;
res += msock->s_pos;
done:
return res;
}
EXPORT_SYMBOL_GPL(mars_socket_send_space_available);
static
int _mars_send_raw(struct mars_socket *msock, const void *buf, int len)
{

1
kernel/mars_net.h
View File

@ -125,6 +125,7 @@ extern bool mars_get_socket(struct mars_socket *msock);
extern void mars_put_socket(struct mars_socket *msock);
extern void mars_shutdown_socket(struct mars_socket *msock);
extern bool mars_socket_is_alive(struct mars_socket *msock);
extern long mars_socket_send_space_available(struct mars_socket *msock);
extern int mars_send_raw(struct mars_socket *msock, const void *buf, int len, bool cork);
extern int mars_recv_raw(struct mars_socket *msock, void *buf, int minlen, int maxlen);