From: Guvenc Gulce <guvenc@xxxxxxxxxxxxx>
Add link counters to the structure of the smc ib device, one counter per
ib port. Increase/decrease the counters as needed in the corresponding
routines.
Signed-off-by: Guvenc Gulce <guvenc@xxxxxxxxxxxxx>
Signed-off-by: Karsten Graul <kgraul@xxxxxxxxxxxxx>
---
net/smc/smc_core.c | 3 +++
net/smc/smc_ib.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index 6e2077161267..da94725deb09 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -316,6 +316,7 @@ int smcr_link_init(struct smc_link_group *lgr, struct smc_link *lnk,
lnk->link_idx = link_idx;
lnk->smcibdev = ini->ib_dev;
lnk->ibport = ini->ib_port;
+ atomic_inc(&ini->ib_dev->lnk_cnt_by_port[ini->ib_port - 1]);
lnk->path_mtu = ini->ib_dev->pattr[ini->ib_port - 1].active_mtu;
atomic_set(&lnk->conn_cnt, 0);
smc_llc_link_set_uid(lnk);
@@ -360,6 +361,7 @@ int smcr_link_init(struct smc_link_group *lgr, struct smc_link *lnk,
smc_llc_link_clear(lnk, false);
out:
put_device(&ini->ib_dev->ibdev->dev);
+ atomic_dec(&ini->ib_dev->lnk_cnt_by_port[ini->ib_port - 1]);
memset(lnk, 0, sizeof(struct smc_link));
lnk->state = SMC_LNK_UNUSED;
if (!atomic_dec_return(&ini->ib_dev->lnk_cnt))
@@ -750,6 +752,7 @@ void smcr_link_clear(struct smc_link *lnk, bool log)
smc_ib_dealloc_protection_domain(lnk);
smc_wr_free_link_mem(lnk);
put_device(&lnk->smcibdev->ibdev->dev);
+ atomic_dec(&lnk->smcibdev->lnk_cnt_by_port[lnk->ibport - 1]);
smcibdev = lnk->smcibdev;
memset(lnk, 0, sizeof(struct smc_link));
lnk->state = SMC_LNK_UNUSED;
diff --git a/net/smc/smc_ib.h b/net/smc/smc_ib.h
index 2ce481187dd0..3e6bfeddd53b 100644
--- a/net/smc/smc_ib.h
+++ b/net/smc/smc_ib.h
@@ -53,6 +53,7 @@ struct smc_ib_device { /* ib-device infos for smc */
atomic_t lnk_cnt; /* number of links on ibdev */
wait_queue_head_t lnks_deleted; /* wait 4 removal of all links*/
struct mutex mutex; /* protect dev setup+cleanup */
+ atomic_t lnk_cnt_by_port[SMC_MAX_PORTS];/*#lnk per port*/
};
struct smc_buf_desc;
--
2.17.1
