[PATCH net-next v4 13/18] net/smc: register loopback device as SMC-Dv2 device
From: Wen Gu <guwen@linux.alibaba.com>
Date: 2023-09-24 15:18:12
Also in:
linux-s390, lkml
Subsystem:
networking [general], shared memory communications (smc) sockets, the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, D. Wythe, Dust Li, Sidraya Jayagond, Wenjia Zhang, Linus Torvalds
After loopback device gets ready, add it to the smcd_dev list as an SMC-Dv2 device for use by SMC-D protocol. Signed-off-by: Wen Gu <guwen@linux.alibaba.com> --- net/smc/smc_loopback.c | 23 ++++++++++++++++------- 1 file changed, 16 insertions(+), 7 deletions(-)
diff --git a/net/smc/smc_loopback.c b/net/smc/smc_loopback.c
index eb13291..8375575 100644
--- a/net/smc/smc_loopback.c
+++ b/net/smc/smc_loopback.c@@ -304,18 +304,27 @@ static int smcd_lo_register_dev(struct smc_lo_dev *ldev) ldev->smcd = smcd; smcd->priv = ldev; - - /* TODO: - * register smc_lo to smcd_dev list. - */ + mutex_lock(&smcd_dev_list.mutex); + smc_ism_check_v2_capable(smcd); + list_add(&smcd->list, &smcd_dev_list.list); + mutex_unlock(&smcd_dev_list.mutex); + pr_warn_ratelimited("smc: adding smcd device %s with pnetid %.16s%s\n", + smc_lo_dev_name, smcd->pnetid, + smcd->pnetid_by_user ? " (user defined)" : ""); return 0; } static void smcd_lo_unregister_dev(struct smc_lo_dev *ldev) { - /* TODO: - * unregister smc_lo from smcd_dev list. - */ + struct smcd_dev *smcd = ldev->smcd; + + pr_warn_ratelimited("smc: removing smcd device %s\n", + smc_lo_dev_name); + smcd->going_away = 1; + smc_smcd_terminate_all(smcd); + mutex_lock(&smcd_dev_list.mutex); + list_del_init(&smcd->list); + mutex_unlock(&smcd_dev_list.mutex); } static void smc_lo_dev_release(struct device *dev)
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1.8.3.1