Commit 25ed57b8 authored by David S. Miller's avatar David S. Miller
Browse files

Merge branch 'smc-next' 



Karsten Graul says:

====================
net/smc: updates 2020-09-10

Please apply the following patch series for smc to netdev's net-next tree.

This patch series is a mix of various improvements and cleanups.
The patches 1 and 10 improve the handling of large parallel workloads.
Patch 8 corrects a kernel config default for config CCWGROUP on s390.
Patch 9 allows userspace tools to retrieve socket information for more
sockets.
====================

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents b55353e2 22ef473d

drivers/s390/net/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -107,7 +107,7 @@ config QETH_OSX 


config CCWGROUP

	tristate

	default (LCS || CTCM || QETH)

	default (LCS || CTCM || QETH || SMC)



config ISM

	tristate "Support for ISM vPCI Adapter"

net/smc/af_smc.c

+123 −93
Original line number Diff line number Diff line
@@ -55,6 +55,9 @@ static DEFINE_MUTEX(smc_client_lgr_pending); /* serialize link group 
						 * creation on client

						 */



struct workqueue_struct	*smc_hs_wq;	/* wq for handshake work */

struct workqueue_struct	*smc_close_wq;	/* wq for close work */



static void smc_tcp_listen_work(struct work_struct *);

static void smc_connect_work(struct work_struct *);
@@ -436,10 +439,10 @@ static int smcr_clnt_conf_first_link(struct smc_sock *smc) 
static void smcr_conn_save_peer_info(struct smc_sock *smc,

				     struct smc_clc_msg_accept_confirm *clc)

{

	int bufsize = smc_uncompress_bufsize(clc->rmbe_size);

	int bufsize = smc_uncompress_bufsize(clc->r0.rmbe_size);



	smc->conn.peer_rmbe_idx = clc->rmbe_idx;

	smc->conn.local_tx_ctrl.token = ntohl(clc->rmbe_alert_token);

	smc->conn.peer_rmbe_idx = clc->r0.rmbe_idx;

	smc->conn.local_tx_ctrl.token = ntohl(clc->r0.rmbe_alert_token);

	smc->conn.peer_rmbe_size = bufsize;

	atomic_set(&smc->conn.peer_rmbe_space, smc->conn.peer_rmbe_size);

	smc->conn.tx_off = bufsize * (smc->conn.peer_rmbe_idx - 1);
@@ -448,10 +451,10 @@ static void smcr_conn_save_peer_info(struct smc_sock *smc, 
static void smcd_conn_save_peer_info(struct smc_sock *smc,

				     struct smc_clc_msg_accept_confirm *clc)

{

	int bufsize = smc_uncompress_bufsize(clc->dmbe_size);

	int bufsize = smc_uncompress_bufsize(clc->d0.dmbe_size);



	smc->conn.peer_rmbe_idx = clc->dmbe_idx;

	smc->conn.peer_token = clc->token;

	smc->conn.peer_rmbe_idx = clc->d0.dmbe_idx;

	smc->conn.peer_token = clc->d0.token;

	/* msg header takes up space in the buffer */

	smc->conn.peer_rmbe_size = bufsize - sizeof(struct smcd_cdc_msg);

	atomic_set(&smc->conn.peer_rmbe_space, smc->conn.peer_rmbe_size);
@@ -470,11 +473,11 @@ static void smc_conn_save_peer_info(struct smc_sock *smc, 
static void smc_link_save_peer_info(struct smc_link *link,

				    struct smc_clc_msg_accept_confirm *clc)

{

	link->peer_qpn = ntoh24(clc->qpn);

	memcpy(link->peer_gid, clc->lcl.gid, SMC_GID_SIZE);

	memcpy(link->peer_mac, clc->lcl.mac, sizeof(link->peer_mac));

	link->peer_psn = ntoh24(clc->psn);

	link->peer_mtu = clc->qp_mtu;

	link->peer_qpn = ntoh24(clc->r0.qpn);

	memcpy(link->peer_gid, clc->r0.lcl.gid, SMC_GID_SIZE);

	memcpy(link->peer_mac, clc->r0.lcl.mac, sizeof(link->peer_mac));

	link->peer_psn = ntoh24(clc->r0.psn);

	link->peer_mtu = clc->r0.qp_mtu;

}



static void smc_switch_to_fallback(struct smc_sock *smc)
@@ -523,11 +526,11 @@ static int smc_connect_decline_fallback(struct smc_sock *smc, int reason_code) 


/* abort connecting */

static int smc_connect_abort(struct smc_sock *smc, int reason_code,

			     int local_contact)

			     int local_first)

{

	bool is_smcd = smc->conn.lgr->is_smcd;



	if (local_contact == SMC_FIRST_CONTACT)

	if (local_first)

		smc_lgr_cleanup_early(&smc->conn);

	else

		smc_conn_free(&smc->conn);
@@ -613,9 +616,9 @@ static int smc_connect_rdma(struct smc_sock *smc, 
	struct smc_link *link;



	ini->is_smcd = false;

	ini->ib_lcl = &aclc->lcl;

	ini->ib_clcqpn = ntoh24(aclc->qpn);

	ini->srv_first_contact = aclc->hdr.flag;

	ini->ib_lcl = &aclc->r0.lcl;

	ini->ib_clcqpn = ntoh24(aclc->r0.qpn);

	ini->first_contact_peer = aclc->hdr.flag;



	mutex_lock(&smc_client_lgr_pending);

	reason_code = smc_conn_create(smc, ini);
@@ -626,7 +629,7 @@ static int smc_connect_rdma(struct smc_sock *smc, 


	smc_conn_save_peer_info(smc, aclc);



	if (ini->cln_first_contact == SMC_FIRST_CONTACT) {

	if (ini->first_contact_local) {

		link = smc->conn.lnk;

	} else {

		/* set link that was assigned by server */
@@ -634,60 +637,62 @@ static int smc_connect_rdma(struct smc_sock *smc, 
		for (i = 0; i < SMC_LINKS_PER_LGR_MAX; i++) {

			struct smc_link *l = &smc->conn.lgr->lnk[i];



			if (l->peer_qpn == ntoh24(aclc->qpn) &&

			    !memcmp(l->peer_gid, &aclc->lcl.gid, SMC_GID_SIZE) &&

			    !memcmp(l->peer_mac, &aclc->lcl.mac, sizeof(l->peer_mac))) {

			if (l->peer_qpn == ntoh24(aclc->r0.qpn) &&

			    !memcmp(l->peer_gid, &aclc->r0.lcl.gid,

				    SMC_GID_SIZE) &&

			    !memcmp(l->peer_mac, &aclc->r0.lcl.mac,

				    sizeof(l->peer_mac))) {

				link = l;

				break;

			}

		}

		if (!link)

			return smc_connect_abort(smc, SMC_CLC_DECL_NOSRVLINK,

						 ini->cln_first_contact);

						 ini->first_contact_local);

		smc->conn.lnk = link;

	}



	/* create send buffer and rmb */

	if (smc_buf_create(smc, false))

		return smc_connect_abort(smc, SMC_CLC_DECL_MEM,

					 ini->cln_first_contact);

					 ini->first_contact_local);



	if (ini->cln_first_contact == SMC_FIRST_CONTACT)

	if (ini->first_contact_local)

		smc_link_save_peer_info(link, aclc);



	if (smc_rmb_rtoken_handling(&smc->conn, link, aclc))

		return smc_connect_abort(smc, SMC_CLC_DECL_ERR_RTOK,

					 ini->cln_first_contact);

					 ini->first_contact_local);



	smc_close_init(smc);

	smc_rx_init(smc);



	if (ini->cln_first_contact == SMC_FIRST_CONTACT) {

	if (ini->first_contact_local) {

		if (smc_ib_ready_link(link))

			return smc_connect_abort(smc, SMC_CLC_DECL_ERR_RDYLNK,

						 ini->cln_first_contact);

						 ini->first_contact_local);

	} else {

		if (smcr_lgr_reg_rmbs(link, smc->conn.rmb_desc))

			return smc_connect_abort(smc, SMC_CLC_DECL_ERR_REGRMB,

						 ini->cln_first_contact);

						 ini->first_contact_local);

	}

	smc_rmb_sync_sg_for_device(&smc->conn);



	reason_code = smc_clc_send_confirm(smc);

	if (reason_code)

		return smc_connect_abort(smc, reason_code,

					 ini->cln_first_contact);

					 ini->first_contact_local);



	smc_tx_init(smc);



	if (ini->cln_first_contact == SMC_FIRST_CONTACT) {

	if (ini->first_contact_local) {

		/* QP confirmation over RoCE fabric */

		smc_llc_flow_initiate(link->lgr, SMC_LLC_FLOW_ADD_LINK);

		reason_code = smcr_clnt_conf_first_link(smc);

		smc_llc_flow_stop(link->lgr, &link->lgr->llc_flow_lcl);

		if (reason_code)

			return smc_connect_abort(smc, reason_code,

						 ini->cln_first_contact);

						 ini->first_contact_local);

	}

	mutex_unlock(&smc_client_lgr_pending);
@@ -707,8 +712,8 @@ static int smc_connect_ism(struct smc_sock *smc, 
	int rc = 0;



	ini->is_smcd = true;

	ini->ism_gid = aclc->gid;

	ini->srv_first_contact = aclc->hdr.flag;

	ini->ism_peer_gid = aclc->d0.gid;

	ini->first_contact_peer = aclc->hdr.flag;



	/* there is only one lgr role for SMC-D; use server lock */

	mutex_lock(&smc_server_lgr_pending);
@@ -724,7 +729,7 @@ static int smc_connect_ism(struct smc_sock *smc, 
		return smc_connect_abort(smc, (rc == -ENOSPC) ?

					      SMC_CLC_DECL_MAX_DMB :

					      SMC_CLC_DECL_MEM,

					 ini->cln_first_contact);

					 ini->first_contact_local);



	smc_conn_save_peer_info(smc, aclc);

	smc_close_init(smc);
@@ -733,7 +738,7 @@ static int smc_connect_ism(struct smc_sock *smc, 


	rc = smc_clc_send_confirm(smc);

	if (rc)

		return smc_connect_abort(smc, rc, ini->cln_first_contact);

		return smc_connect_abort(smc, rc, ini->first_contact_local);

	mutex_unlock(&smc_server_lgr_pending);



	smc_copy_sock_settings_to_clc(smc);
@@ -903,7 +908,7 @@ static int smc_connect(struct socket *sock, struct sockaddr *addr, 
	if (smc->use_fallback)

		goto out;

	if (flags & O_NONBLOCK) {

		if (schedule_work(&smc->connect_work))

		if (queue_work(smc_hs_wq, &smc->connect_work))

			smc->connect_nonblock = 1;

		rc = -EINPROGRESS;

	} else {
@@ -940,10 +945,10 @@ static int smc_clcsock_accept(struct smc_sock *lsmc, struct smc_sock **new_smc) 


	mutex_lock(&lsmc->clcsock_release_lock);

	if (lsmc->clcsock)

		rc = kernel_accept(lsmc->clcsock, &new_clcsock, 0);

		rc = kernel_accept(lsmc->clcsock, &new_clcsock, SOCK_NONBLOCK);

	mutex_unlock(&lsmc->clcsock_release_lock);

	lock_sock(lsk);

	if  (rc < 0)

	if  (rc < 0 && rc != -EAGAIN)

		lsk->sk_err = -rc;

	if (rc < 0 || lsk->sk_state == SMC_CLOSED) {

		new_sk->sk_prot->unhash(new_sk);
@@ -956,6 +961,10 @@ static int smc_clcsock_accept(struct smc_sock *lsmc, struct smc_sock **new_smc) 
		goto out;

	}



	/* new clcsock has inherited the smc listen-specific sk_data_ready

	 * function; switch it back to the original sk_data_ready function

	 */

	new_clcsock->sk->sk_data_ready = lsmc->clcsk_data_ready;

	(*new_smc)->clcsock = new_clcsock;

out:

	return rc;
@@ -1123,10 +1132,10 @@ static void smc_listen_out_err(struct smc_sock *new_smc) 


/* listen worker: decline and fall back if possible */

static void smc_listen_decline(struct smc_sock *new_smc, int reason_code,

			       int local_contact)

			       bool local_first)

{

	/* RDMA setup failed, switch back to TCP */

	if (local_contact == SMC_FIRST_CONTACT)

	if (local_first)

		smc_lgr_cleanup_early(&new_smc->conn);

	else

		smc_conn_free(&new_smc->conn);
@@ -1182,30 +1191,16 @@ static int smc_listen_ism_init(struct smc_sock *new_smc, 
			       struct smc_clc_msg_proposal *pclc,

			       struct smc_init_info *ini)

{

	struct smc_clc_msg_smcd *pclc_smcd;

	int rc;



	pclc_smcd = smc_get_clc_msg_smcd(pclc);

	ini->ism_gid = pclc_smcd->gid;

	rc = smc_conn_create(new_smc, ini);

	if (rc)

		return rc;



	/* Check if peer can be reached via ISM device */

	if (smc_ism_cantalk(new_smc->conn.lgr->peer_gid,

			    new_smc->conn.lgr->vlan_id,

			    new_smc->conn.lgr->smcd)) {

		if (ini->cln_first_contact == SMC_FIRST_CONTACT)

			smc_lgr_cleanup_early(&new_smc->conn);

		else

			smc_conn_free(&new_smc->conn);

		return SMC_CLC_DECL_SMCDNOTALK;

	}



	/* Create send and receive buffers */

	rc = smc_buf_create(new_smc, true);

	if (rc) {

		if (ini->cln_first_contact == SMC_FIRST_CONTACT)

		if (ini->first_contact_local)

			smc_lgr_cleanup_early(&new_smc->conn);

		else

			smc_conn_free(&new_smc->conn);
@@ -1217,11 +1212,11 @@ static int smc_listen_ism_init(struct smc_sock *new_smc, 
}



/* listen worker: register buffers */

static int smc_listen_rdma_reg(struct smc_sock *new_smc, int local_contact)

static int smc_listen_rdma_reg(struct smc_sock *new_smc, bool local_first)

{

	struct smc_connection *conn = &new_smc->conn;



	if (local_contact != SMC_FIRST_CONTACT) {

	if (!local_first) {

		if (smcr_lgr_reg_rmbs(conn->lnk, conn->rmb_desc))

			return SMC_CLC_DECL_ERR_REGRMB;

	}
@@ -1233,35 +1228,25 @@ static int smc_listen_rdma_reg(struct smc_sock *new_smc, int local_contact) 
/* listen worker: finish RDMA setup */

static int smc_listen_rdma_finish(struct smc_sock *new_smc,

				  struct smc_clc_msg_accept_confirm *cclc,

				  int local_contact)

				  bool local_first)

{

	struct smc_link *link = new_smc->conn.lnk;

	int reason_code = 0;



	if (local_contact == SMC_FIRST_CONTACT)

	if (local_first)

		smc_link_save_peer_info(link, cclc);



	if (smc_rmb_rtoken_handling(&new_smc->conn, link, cclc)) {

		reason_code = SMC_CLC_DECL_ERR_RTOK;

		goto decline;

	}

	if (smc_rmb_rtoken_handling(&new_smc->conn, link, cclc))

		return SMC_CLC_DECL_ERR_RTOK;



	if (local_contact == SMC_FIRST_CONTACT) {

		if (smc_ib_ready_link(link)) {

			reason_code = SMC_CLC_DECL_ERR_RDYLNK;

			goto decline;

		}

	if (local_first) {

		if (smc_ib_ready_link(link))

			return SMC_CLC_DECL_ERR_RDYLNK;

		/* QP confirmation over RoCE fabric */

		smc_llc_flow_initiate(link->lgr, SMC_LLC_FLOW_ADD_LINK);

		reason_code = smcr_serv_conf_first_link(new_smc);

		smc_llc_flow_stop(link->lgr, &link->lgr->llc_flow_lcl);

		if (reason_code)

			goto decline;

	}

	return 0;



decline:

	smc_listen_decline(new_smc, reason_code, local_contact);

	return reason_code;

}
@@ -1272,10 +1257,10 @@ static void smc_listen_work(struct work_struct *work) 
						smc_listen_work);

	struct socket *newclcsock = new_smc->clcsock;

	struct smc_clc_msg_accept_confirm cclc;

	struct smc_clc_msg_proposal_area *buf;

	struct smc_clc_msg_proposal *pclc;

	struct smc_init_info ini = {0};

	bool ism_supported = false;

	u8 buf[SMC_CLC_MAX_LEN];

	int rc = 0;



	if (new_smc->listen_smc->sk.sk_state != SMC_LISTEN)
@@ -1297,8 +1282,13 @@ static void smc_listen_work(struct work_struct *work) 
	/* do inband token exchange -

	 * wait for and receive SMC Proposal CLC message

	 */

	pclc = (struct smc_clc_msg_proposal *)&buf;

	rc = smc_clc_wait_msg(new_smc, pclc, SMC_CLC_MAX_LEN,

	buf = kzalloc(sizeof(*buf), GFP_KERNEL);

	if (!buf) {

		rc = SMC_CLC_DECL_MEM;

		goto out_decl;

	}

	pclc = (struct smc_clc_msg_proposal *)buf;

	rc = smc_clc_wait_msg(new_smc, pclc, sizeof(*buf),

			      SMC_CLC_PROPOSAL, CLC_WAIT_TIME);

	if (rc)

		goto out_decl;
@@ -1327,7 +1317,10 @@ static void smc_listen_work(struct work_struct *work) 


	/* check if ISM is available */

	if (pclc->hdr.path == SMC_TYPE_D || pclc->hdr.path == SMC_TYPE_B) {

		struct smc_clc_msg_smcd *pclc_smcd = smc_get_clc_msg_smcd(pclc);



		ini.is_smcd = true; /* prepare ISM check */

		ini.ism_peer_gid = pclc_smcd->gid;

		rc = smc_find_ism_device(new_smc, &ini);

		if (!rc)

			rc = smc_listen_ism_init(new_smc, pclc, &ini);
@@ -1354,13 +1347,13 @@ static void smc_listen_work(struct work_struct *work) 
		rc = smc_listen_rdma_init(new_smc, &ini);

		if (rc)

			goto out_unlock;

		rc = smc_listen_rdma_reg(new_smc, ini.cln_first_contact);

		rc = smc_listen_rdma_reg(new_smc, ini.first_contact_local);

		if (rc)

			goto out_unlock;

	}



	/* send SMC Accept CLC message */

	rc = smc_clc_send_accept(new_smc, ini.cln_first_contact);

	rc = smc_clc_send_accept(new_smc, ini.first_contact_local);

	if (rc)

		goto out_unlock;
@@ -1378,12 +1371,13 @@ static void smc_listen_work(struct work_struct *work) 
	}



	/* finish worker */

	kfree(buf);

	if (!ism_supported) {

		rc = smc_listen_rdma_finish(new_smc, &cclc,

					    ini.cln_first_contact);

		mutex_unlock(&smc_server_lgr_pending);

					    ini.first_contact_local);

		if (rc)

			return;

			goto out_unlock;

		mutex_unlock(&smc_server_lgr_pending);

	}

	smc_conn_save_peer_info(new_smc, &cclc);

	smc_listen_out_connected(new_smc);
@@ -1392,7 +1386,8 @@ static void smc_listen_work(struct work_struct *work) 
out_unlock:

	mutex_unlock(&smc_server_lgr_pending);

out_decl:

	smc_listen_decline(new_smc, rc, ini.cln_first_contact);

	smc_listen_decline(new_smc, rc, ini.first_contact_local);

	kfree(buf);

}



static void smc_tcp_listen_work(struct work_struct *work)
@@ -1406,7 +1401,7 @@ static void smc_tcp_listen_work(struct work_struct *work) 
	lock_sock(lsk);

	while (lsk->sk_state == SMC_LISTEN) {

		rc = smc_clcsock_accept(lsmc, &new_smc);

		if (rc)

		if (rc) /* clcsock accept queue empty or error */

			goto out;

		if (!new_smc)

			continue;
@@ -1420,13 +1415,29 @@ static void smc_tcp_listen_work(struct work_struct *work) 
		new_smc->sk.sk_sndbuf = lsmc->sk.sk_sndbuf;

		new_smc->sk.sk_rcvbuf = lsmc->sk.sk_rcvbuf;

		sock_hold(&new_smc->sk); /* sock_put in passive closing */

		if (!schedule_work(&new_smc->smc_listen_work))

		if (!queue_work(smc_hs_wq, &new_smc->smc_listen_work))

			sock_put(&new_smc->sk);

	}



out:

	release_sock(lsk);

	sock_put(&lsmc->sk); /* sock_hold in smc_listen */

	sock_put(&lsmc->sk); /* sock_hold in smc_clcsock_data_ready() */

}



static void smc_clcsock_data_ready(struct sock *listen_clcsock)

{

	struct smc_sock *lsmc;



	lsmc = (struct smc_sock *)

	       ((uintptr_t)listen_clcsock->sk_user_data & ~SK_USER_DATA_NOCOPY);

	if (!lsmc)

		return;

	lsmc->clcsk_data_ready(listen_clcsock);

	if (lsmc->sk.sk_state == SMC_LISTEN) {

		sock_hold(&lsmc->sk); /* sock_put in smc_tcp_listen_work() */

		if (!queue_work(smc_hs_wq, &lsmc->tcp_listen_work))

			sock_put(&lsmc->sk);

	}

}



static int smc_listen(struct socket *sock, int backlog)
@@ -1455,15 +1466,19 @@ static int smc_listen(struct socket *sock, int backlog) 
	if (!smc->use_fallback)

		tcp_sk(smc->clcsock->sk)->syn_smc = 1;



	/* save original sk_data_ready function and establish

	 * smc-specific sk_data_ready function

	 */

	smc->clcsk_data_ready = smc->clcsock->sk->sk_data_ready;

	smc->clcsock->sk->sk_data_ready = smc_clcsock_data_ready;

	smc->clcsock->sk->sk_user_data =

		(void *)((uintptr_t)smc | SK_USER_DATA_NOCOPY);

	rc = kernel_listen(smc->clcsock, backlog);

	if (rc)

		goto out;

	sk->sk_max_ack_backlog = backlog;

	sk->sk_ack_backlog = 0;

	sk->sk_state = SMC_LISTEN;

	sock_hold(sk); /* sock_hold in tcp_listen_worker */

	if (!schedule_work(&smc->tcp_listen_work))

		sock_put(sk);



out:

	release_sock(sk);
@@ -1788,8 +1803,8 @@ static int smc_setsockopt(struct socket *sock, int level, int optname, 
		    sk->sk_state != SMC_LISTEN &&

		    sk->sk_state != SMC_CLOSED) {

			if (val)

				mod_delayed_work(system_wq, &smc->conn.tx_work,

						 0);

				mod_delayed_work(smc->conn.lgr->tx_wq,

						 &smc->conn.tx_work, 0);

		}

		break;

	case TCP_CORK:
@@ -1797,8 +1812,8 @@ static int smc_setsockopt(struct socket *sock, int level, int optname, 
		    sk->sk_state != SMC_LISTEN &&

		    sk->sk_state != SMC_CLOSED) {

			if (!val)

				mod_delayed_work(system_wq, &smc->conn.tx_work,

						 0);

				mod_delayed_work(smc->conn.lgr->tx_wq,

						 &smc->conn.tx_work, 0);

		}

		break;

	case TCP_DEFER_ACCEPT:
@@ -2081,10 +2096,19 @@ static int __init smc_init(void) 
	if (rc)

		goto out_pernet_subsys;



	rc = -ENOMEM;

	smc_hs_wq = alloc_workqueue("smc_hs_wq", 0, 0);

	if (!smc_hs_wq)

		goto out_pnet;



	smc_close_wq = alloc_workqueue("smc_close_wq", 0, 0);

	if (!smc_close_wq)

		goto out_alloc_hs_wq;



	rc = smc_core_init();

	if (rc) {

		pr_err("%s: smc_core_init fails with %d\n", __func__, rc);

		goto out_pnet;

		goto out_alloc_wqs;

	}



	rc = smc_llc_init();
@@ -2136,6 +2160,10 @@ out_proto: 
	proto_unregister(&smc_proto);

out_core:

	smc_core_exit();

out_alloc_wqs:

	destroy_workqueue(smc_close_wq);

out_alloc_hs_wq:

	destroy_workqueue(smc_hs_wq);

out_pnet:

	smc_pnet_exit();

out_pernet_subsys:
@@ -2150,6 +2178,8 @@ static void __exit smc_exit(void) 
	sock_unregister(PF_SMC);

	smc_core_exit();

	smc_ib_unregister_client();

	destroy_workqueue(smc_close_wq);

	destroy_workqueue(smc_hs_wq);

	proto_unregister(&smc_proto6);

	proto_unregister(&smc_proto);

	smc_pnet_exit();

net/smc/smc.h

+7 −0
Original line number Diff line number Diff line
@@ -18,6 +18,8 @@ 


#include "smc_ib.h"



#define SMC_V1		1		/* SMC version V1 */



#define SMCPROTO_SMC		0	/* SMC protocol, IPv4 */

#define SMCPROTO_SMC6		1	/* SMC protocol, IPv6 */
@@ -201,6 +203,8 @@ struct smc_connection { 
struct smc_sock {				/* smc sock container */

	struct sock		sk;

	struct socket		*clcsock;	/* internal tcp socket */

	void			(*clcsk_data_ready)(struct sock *sk);

						/* original data_ready fct. **/

	struct smc_connection	conn;		/* smc connection */

	struct smc_sock		*listen_smc;	/* listen parent */

	struct work_struct	connect_work;	/* handle non-blocking connect*/
@@ -235,6 +239,9 @@ static inline struct smc_sock *smc_sk(const struct sock *sk) 
	return (struct smc_sock *)sk;

}



extern struct workqueue_struct	*smc_hs_wq;	/* wq for handshake work */

extern struct workqueue_struct	*smc_close_wq;	/* wq for close work */



#define SMC_SYSTEMID_LEN		8



extern u8	local_systemid[SMC_SYSTEMID_LEN]; /* unique system identifier */

net/smc/smc_cdc.c

+2 −2
Original line number Diff line number Diff line
@@ -299,7 +299,7 @@ static void smc_cdc_msg_validate(struct smc_sock *smc, struct smc_cdc_msg *cdc, 
		conn->lnk = link;

		spin_unlock_bh(&conn->send_lock);

		sock_hold(&smc->sk); /* sock_put in abort_work */

		if (!schedule_work(&conn->abort_work))

		if (!queue_work(smc_close_wq, &conn->abort_work))

			sock_put(&smc->sk);

	}

}
@@ -368,7 +368,7 @@ static void smc_cdc_msg_recv_action(struct smc_sock *smc, 
			smc->clcsock->sk->sk_shutdown |= RCV_SHUTDOWN;

		sock_set_flag(&smc->sk, SOCK_DONE);

		sock_hold(&smc->sk); /* sock_put in close_work */

		if (!schedule_work(&conn->close_work))

		if (!queue_work(smc_close_wq, &conn->close_work))

			sock_put(&smc->sk);

	}

}

net/smc/smc_clc.c

+112 −131

File changed.

Preview size limit exceeded, changes collapsed.

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