Commit b45e7f98 authored by Karsten Graul's avatar Karsten Graul Committed by David S. Miller
Browse files

net/smc: llc_add_link_work to handle ADD_LINK LLC requests 



Introduce a work that is scheduled when a new ADD_LINK LLC request is
received. The work will call either the SMC client or SMC server
ADD_LINK processing.

Signed-off-by: default avatarKarsten Graul <kgraul@linux.ibm.com>
Reviewed-by: default avatarUrsula Braun <ubraun@linux.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8574cf40

net/smc/smc_core.h

+1 −0
Original line number Diff line number Diff line
@@ -253,6 +253,7 @@ struct smc_link_group { 
						/* protects llc_event_q */

			struct mutex		llc_conf_mutex;

						/* protects lgr reconfig. */

			struct work_struct	llc_add_link_work;

			struct work_struct	llc_event_work;

						/* llc event worker */

			wait_queue_head_t	llc_waiter;

net/smc/smc_llc.c

+22 −2
Original line number Diff line number Diff line
@@ -565,6 +565,24 @@ static int smc_llc_alloc_alt_link(struct smc_link_group *lgr, 
	return -EMLINK;

}



/* worker to process an add link message */

static void smc_llc_add_link_work(struct work_struct *work)

{

	struct smc_link_group *lgr = container_of(work, struct smc_link_group,

						  llc_add_link_work);



	if (list_empty(&lgr->list)) {

		/* link group is terminating */

		smc_llc_flow_qentry_del(&lgr->llc_flow_lcl);

		goto out;

	}



	/* tbd: call smc_llc_process_cli_add_link(lgr); */

	/* tbd: call smc_llc_process_srv_add_link(lgr); */

out:

	smc_llc_flow_stop(lgr, &lgr->llc_flow_lcl);

}



static void smc_llc_rx_delete_link(struct smc_link *link,

				   struct smc_llc_msg_del_link *llc)

{
@@ -685,11 +703,11 @@ static void smc_llc_event_handler(struct smc_llc_qentry *qentry) 
				wake_up_interruptible(&lgr->llc_waiter);

			} else if (smc_llc_flow_start(&lgr->llc_flow_lcl,

						      qentry)) {

				/* tbd: schedule_work(&lgr->llc_add_link_work); */

				schedule_work(&lgr->llc_add_link_work);

			}

		} else if (smc_llc_flow_start(&lgr->llc_flow_lcl, qentry)) {

			/* as smc server, handle client suggestion */

			/* tbd: schedule_work(&lgr->llc_add_link_work); */

			schedule_work(&lgr->llc_add_link_work);

		}

		return;

	case SMC_LLC_CONFIRM_LINK:
@@ -868,6 +886,7 @@ void smc_llc_lgr_init(struct smc_link_group *lgr, struct smc_sock *smc) 
	struct net *net = sock_net(smc->clcsock->sk);



	INIT_WORK(&lgr->llc_event_work, smc_llc_event_work);

	INIT_WORK(&lgr->llc_add_link_work, smc_llc_add_link_work);

	INIT_LIST_HEAD(&lgr->llc_event_q);

	spin_lock_init(&lgr->llc_event_q_lock);

	spin_lock_init(&lgr->llc_flow_lock);
@@ -882,6 +901,7 @@ void smc_llc_lgr_clear(struct smc_link_group *lgr) 
	smc_llc_event_flush(lgr);

	wake_up_interruptible_all(&lgr->llc_waiter);

	cancel_work_sync(&lgr->llc_event_work);

	cancel_work_sync(&lgr->llc_add_link_work);

	if (lgr->delayed_event) {

		kfree(lgr->delayed_event);

		lgr->delayed_event = NULL;

CRA Git | Maintained and supported by SUSTech CRA and CCSE