tcp: add tcp_sock_set_nodelay

Add a helper to directly set the TCP_NODELAY 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>
Acked-by: Sagi Grimberg <sagi@grimberg.me>
Acked-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
这个提交包含在:
Christoph Hellwig
2020-05-28 07:12:19 +02:00
提交者 David S. Miller
父节点 db10538a4b
当前提交 12abc5ee78
修改 16 个文件,包含 49 行新增127 行删除

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@@ -1441,14 +1441,6 @@ static void o2net_rx_until_empty(struct work_struct *work)
sc_put(sc);
}
static int o2net_set_nodelay(struct socket *sock)
{
int val = 1;
return kernel_setsockopt(sock, SOL_TCP, TCP_NODELAY,
(void *)&val, sizeof(val));
}
static int o2net_set_usertimeout(struct socket *sock)
{
int user_timeout = O2NET_TCP_USER_TIMEOUT;
@@ -1636,11 +1628,7 @@ static void o2net_start_connect(struct work_struct *work)
goto out;
}
ret = o2net_set_nodelay(sc->sc_sock);
if (ret) {
mlog(ML_ERROR, "setting TCP_NODELAY failed with %d\n", ret);
goto out;
}
tcp_sock_set_nodelay(sc->sc_sock->sk);
ret = o2net_set_usertimeout(sock);
if (ret) {
@@ -1832,11 +1820,7 @@ static int o2net_accept_one(struct socket *sock, int *more)
*more = 1;
new_sock->sk->sk_allocation = GFP_ATOMIC;
ret = o2net_set_nodelay(new_sock);
if (ret) {
mlog(ML_ERROR, "setting TCP_NODELAY failed with %d\n", ret);
goto out;
}
tcp_sock_set_nodelay(new_sock->sk);
ret = o2net_set_usertimeout(new_sock);
if (ret) {