From 12abc5ee7873a085cc280240822b8ac53c86fecd Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 28 May 2020 07:12:19 +0200 Subject: 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 Acked-by: Sagi Grimberg Acked-by: Jason Gunthorpe Signed-off-by: David S. Miller --- drivers/block/drbd/drbd_int.h | 7 ------- drivers/block/drbd/drbd_main.c | 2 +- drivers/block/drbd/drbd_receiver.c | 4 ++-- drivers/infiniband/sw/siw/siw_cm.c | 24 ++++-------------------- drivers/nvme/host/tcp.c | 9 +-------- drivers/nvme/target/tcp.c | 12 ++---------- drivers/target/iscsi/iscsi_target_login.c | 15 +++------------ 7 files changed, 13 insertions(+), 60 deletions(-) (limited to 'drivers') diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index 3550adc93c68..e24bba87c8e0 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -1570,13 +1570,6 @@ extern void drbd_set_recv_tcq(struct drbd_device *device, int tcq_enabled); extern void _drbd_clear_done_ee(struct drbd_device *device, struct list_head *to_be_freed); extern int drbd_connected(struct drbd_peer_device *); -static inline void drbd_tcp_nodelay(struct socket *sock) -{ - int val = 1; - (void) kernel_setsockopt(sock, SOL_TCP, TCP_NODELAY, - (char*)&val, sizeof(val)); -} - static inline void drbd_tcp_quickack(struct socket *sock) { int val = 2; diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index c094c3c2c5d4..45fbd526c453 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -660,7 +660,7 @@ static int __send_command(struct drbd_connection *connection, int vnr, /* DRBD protocol "pings" are latency critical. * This is supposed to trigger tcp_push_pending_frames() */ if (!err && (cmd == P_PING || cmd == P_PING_ACK)) - drbd_tcp_nodelay(sock->socket); + tcp_sock_set_nodelay(sock->socket->sk); return err; } diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index 55ea907ad33c..20a5e94494ac 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -1051,8 +1051,8 @@ randomize: /* we don't want delays. * we use TCP_CORK where appropriate, though */ - drbd_tcp_nodelay(sock.socket); - drbd_tcp_nodelay(msock.socket); + tcp_sock_set_nodelay(sock.socket->sk); + tcp_sock_set_nodelay(msock.socket->sk); connection->data.socket = sock.socket; connection->meta.socket = msock.socket; diff --git a/drivers/infiniband/sw/siw/siw_cm.c b/drivers/infiniband/sw/siw/siw_cm.c index d1860f3e8740..1662216be66d 100644 --- a/drivers/infiniband/sw/siw/siw_cm.c +++ b/drivers/infiniband/sw/siw/siw_cm.c @@ -947,16 +947,8 @@ static void siw_accept_newconn(struct siw_cep *cep) siw_cep_get(new_cep); new_s->sk->sk_user_data = new_cep; - if (siw_tcp_nagle == false) { - int val = 1; - - rv = kernel_setsockopt(new_s, SOL_TCP, TCP_NODELAY, - (char *)&val, sizeof(val)); - if (rv) { - siw_dbg_cep(cep, "setsockopt NODELAY error: %d\n", rv); - goto error; - } - } + if (siw_tcp_nagle == false) + tcp_sock_set_nodelay(new_s->sk); new_cep->state = SIW_EPSTATE_AWAIT_MPAREQ; rv = siw_cm_queue_work(new_cep, SIW_CM_WORK_MPATIMEOUT); @@ -1386,16 +1378,8 @@ int siw_connect(struct iw_cm_id *id, struct iw_cm_conn_param *params) siw_dbg_qp(qp, "kernel_bindconnect: error %d\n", rv); goto error; } - if (siw_tcp_nagle == false) { - int val = 1; - - rv = kernel_setsockopt(s, SOL_TCP, TCP_NODELAY, (char *)&val, - sizeof(val)); - if (rv) { - siw_dbg_qp(qp, "setsockopt NODELAY error: %d\n", rv); - goto error; - } - } + if (siw_tcp_nagle == false) + tcp_sock_set_nodelay(s->sk); cep = siw_cep_alloc(sdev); if (!cep) { rv = -ENOMEM; diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c index a307972d33a0..4e4a750ecdb9 100644 --- a/drivers/nvme/host/tcp.c +++ b/drivers/nvme/host/tcp.c @@ -1346,14 +1346,7 @@ static int nvme_tcp_alloc_queue(struct nvme_ctrl *nctrl, } /* Set TCP no delay */ - opt = 1; - ret = kernel_setsockopt(queue->sock, IPPROTO_TCP, - TCP_NODELAY, (char *)&opt, sizeof(opt)); - if (ret) { - dev_err(nctrl->device, - "failed to set TCP_NODELAY sock opt %d\n", ret); - goto err_sock; - } + tcp_sock_set_nodelay(queue->sock->sk); /* * Cleanup whatever is sitting in the TCP transmit queue on socket diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c index f3088156d01d..55bc4c3c0a74 100644 --- a/drivers/nvme/target/tcp.c +++ b/drivers/nvme/target/tcp.c @@ -1580,7 +1580,7 @@ static int nvmet_tcp_add_port(struct nvmet_port *nport) { struct nvmet_tcp_port *port; __kernel_sa_family_t af; - int opt, ret; + int ret; port = kzalloc(sizeof(*port), GFP_KERNEL); if (!port) @@ -1625,15 +1625,7 @@ static int nvmet_tcp_add_port(struct nvmet_port *nport) port->data_ready = port->sock->sk->sk_data_ready; port->sock->sk->sk_data_ready = nvmet_tcp_listen_data_ready; sock_set_reuseaddr(port->sock->sk); - - opt = 1; - ret = kernel_setsockopt(port->sock, IPPROTO_TCP, - TCP_NODELAY, (char *)&opt, sizeof(opt)); - if (ret) { - pr_err("failed to set TCP_NODELAY sock opt %d\n", ret); - goto err_sock; - } - + tcp_sock_set_nodelay(port->sock->sk); if (so_priority > 0) sock_set_priority(port->sock->sk, so_priority); diff --git a/drivers/target/iscsi/iscsi_target_login.c b/drivers/target/iscsi/iscsi_target_login.c index 91acb3f07b4c..b561b07a869a 100644 --- a/drivers/target/iscsi/iscsi_target_login.c +++ b/drivers/target/iscsi/iscsi_target_login.c @@ -897,20 +897,11 @@ int iscsit_setup_np( /* * Set SO_REUSEADDR, and disable Nagel Algorithm with TCP_NODELAY. */ - /* FIXME: Someone please explain why this is endian-safe */ - opt = 1; - if (np->np_network_transport == ISCSI_TCP) { - ret = kernel_setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, - (char *)&opt, sizeof(opt)); - if (ret < 0) { - pr_err("kernel_setsockopt() for TCP_NODELAY" - " failed: %d\n", ret); - goto fail; - } - } - + if (np->np_network_transport == ISCSI_TCP) + tcp_sock_set_nodelay(sock->sk); sock_set_reuseaddr(sock->sk); + opt = 1; ret = kernel_setsockopt(sock, IPPROTO_IP, IP_FREEBIND, (char *)&opt, sizeof(opt)); if (ret < 0) { -- cgit v1.2.3