diff options
| author | Karsten Graul <kgraul@linux.ibm.com> | 2020-05-01 12:48:13 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-05-01 16:20:05 -0700 |
| commit | b45e7f98ab7c2d7035d92100ee011584693eccce (patch) | |
| tree | 36e0467792f298620b4bf28e108202f5000ef57c /net | |
| parent | 8574cf4055ab44724ee9a4c30921d3ed853d787c (diff) | |
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: Karsten Graul <kgraul@linux.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/smc/smc_core.h | 1 | ||||
| -rw-r--r-- | net/smc/smc_llc.c | 24 |
2 files changed, 23 insertions, 2 deletions
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h index eb27f2eb7c8c..555ada9d2423 100644 --- a/net/smc/smc_core.h +++ b/net/smc/smc_core.h @@ -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; diff --git a/net/smc/smc_llc.c b/net/smc/smc_llc.c index 3a25b6ebe3a8..50f59746bdf9 100644 --- a/net/smc/smc_llc.c +++ b/net/smc/smc_llc.c @@ -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; |