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authorUrsula Braun <ubraun@linux.ibm.com>2019-10-09 10:07:45 +0200
committerJakub Kicinski <jakub.kicinski@netronome.com>2019-10-09 19:45:44 -0700
commitb3cb53c05f20c5b4026a36a7bbd3010d1f3e0a55 (patch)
tree20736356809171f81a0ba9b03b314730e1fa268e /net/smc
parenta0a62ee15a829ebf8aeec55a4f1688230439b3e0 (diff)
downloadlinux-b3cb53c05f20c5b4026a36a7bbd3010d1f3e0a55.tar.bz2
net/smc: increase device refcount for added link group
SMCD link groups belong to certain ISM-devices and SMCR link group links belong to certain IB-devices. Increase the refcount for these devices, as long as corresponding link groups exist. Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Diffstat (limited to 'net/smc')
-rw-r--r--net/smc/smc_core.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index 949b1914e11a..a07fbf56c929 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -248,12 +248,14 @@ static int smc_lgr_create(struct smc_sock *smc, struct smc_init_info *ini)
lgr->conns_all = RB_ROOT;
if (ini->is_smcd) {
/* SMC-D specific settings */
+ get_device(&ini->ism_dev->dev);
lgr->peer_gid = ini->ism_gid;
lgr->smcd = ini->ism_dev;
lgr_list = &ini->ism_dev->lgr_list;
lgr_lock = &lgr->smcd->lgr_lock;
} else {
/* SMC-R specific settings */
+ get_device(&ini->ib_dev->ibdev->dev);
lgr->role = smc->listen_smc ? SMC_SERV : SMC_CLNT;
memcpy(lgr->peer_systemid, ini->ib_lcl->id_for_peer,
SMC_SYSTEMID_LEN);
@@ -451,10 +453,13 @@ static void smc_lgr_free_bufs(struct smc_link_group *lgr)
static void smc_lgr_free(struct smc_link_group *lgr)
{
smc_lgr_free_bufs(lgr);
- if (lgr->is_smcd)
+ if (lgr->is_smcd) {
smc_ism_put_vlan(lgr->smcd, lgr->vlan_id);
- else
+ put_device(&lgr->smcd->dev);
+ } else {
smc_link_clear(&lgr->lnk[SMC_SINGLE_LINK]);
+ put_device(&lgr->lnk[SMC_SINGLE_LINK].smcibdev->ibdev->dev);
+ }
kfree(lgr);
}