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tcp: add tcp_sock_set_cork

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Add a helper to directly set the TCP_CORK sockopt from kernel space
without going through a fake uaccess.  Cleanup the callers to avoid
pointless wrappers now that this is a simple function call.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christoph Hellwig
2020-05-28 07:12:18 +02:00
committed by David S. Miller
parent fe31a326a4
commit db10538a4b
7 changed files with 43 additions and 51 deletions
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9
net/rds/tcp_send.c
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@@ -38,23 +38,18 @@
#include "rds.h"
#include "tcp.h"
static void rds_tcp_cork(struct socket *sock, int val)
{
kernel_setsockopt(sock, SOL_TCP, TCP_CORK, (void *)&val, sizeof(val));
}
void rds_tcp_xmit_path_prepare(struct rds_conn_path *cp)
{
struct rds_tcp_connection *tc = cp->cp_transport_data;
rds_tcp_cork(tc->t_sock, 1);
tcp_sock_set_cork(tc->t_sock->sk, true);
}
void rds_tcp_xmit_path_complete(struct rds_conn_path *cp)
{
struct rds_tcp_connection *tc = cp->cp_transport_data;
rds_tcp_cork(tc->t_sock, 0);
tcp_sock_set_cork(tc->t_sock->sk, false);
}
/* the core send_sem serializes this with other xmit and shutdown */