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Message-Id: <20240312142743.41406-8-guwen@linux.alibaba.com>
Date: Tue, 12 Mar 2024 22:27:39 +0800
From: Wen Gu <guwen@...ux.alibaba.com>
To: wintera@...ux.ibm.com,
twinkler@...ux.ibm.com,
hca@...ux.ibm.com,
gor@...ux.ibm.com,
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wenjia@...ux.ibm.com,
jaka@...ux.ibm.com
Cc: borntraeger@...ux.ibm.com,
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alibuda@...ux.alibaba.com,
tonylu@...ux.alibaba.com,
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Subject: [PATCH net-next v3 07/11] net/smc: register loopback-ism into SMC-D device list
After loopback-ism device gets ready, add it to the SMC-D device list as
an ISMv2 device.
Signed-off-by: Wen Gu <guwen@...ux.alibaba.com>
---
net/smc/smc_ism.c | 11 +++++++----
net/smc/smc_ism.h | 1 +
net/smc/smc_loopback.c | 20 +++++++++++++-------
3 files changed, 21 insertions(+), 11 deletions(-)
diff --git a/net/smc/smc_ism.c b/net/smc/smc_ism.c
index 26743a14cf27..c50910300a03 100644
--- a/net/smc/smc_ism.c
+++ b/net/smc/smc_ism.c
@@ -91,6 +91,11 @@ bool smc_ism_is_v2_capable(void)
return smc_ism_v2_capable;
}
+void smc_ism_set_v2_capable(void)
+{
+ smc_ism_v2_capable = true;
+}
+
/* Set a connection using this DMBE. */
void smc_ism_set_conn(struct smc_connection *conn)
{
@@ -454,11 +459,9 @@ static void smcd_register_dev(struct ism_dev *ism)
if (smc_pnetid_by_dev_port(&ism->pdev->dev, 0, smcd->pnetid))
smc_pnetid_by_table_smcd(smcd);
+ if (smcd->ops->supports_v2())
+ smc_ism_set_v2_capable();
mutex_lock(&smcd_dev_list.mutex);
- if (list_empty(&smcd_dev_list.list)) {
- if (smcd->ops->supports_v2())
- smc_ism_v2_capable = true;
- }
/* sort list: devices without pnetid before devices with pnetid */
if (smcd->pnetid[0])
list_add_tail(&smcd->list, &smcd_dev_list.list);
diff --git a/net/smc/smc_ism.h b/net/smc/smc_ism.h
index 165cd013404b..2ea169c1301c 100644
--- a/net/smc/smc_ism.h
+++ b/net/smc/smc_ism.h
@@ -52,6 +52,7 @@ int smc_ism_signal_shutdown(struct smc_link_group *lgr);
void smc_ism_get_system_eid(u8 **eid);
u16 smc_ism_get_chid(struct smcd_dev *dev);
bool smc_ism_is_v2_capable(void);
+void smc_ism_set_v2_capable(void);
int smc_ism_init(void);
void smc_ism_exit(void);
int smcd_nl_get_device(struct sk_buff *skb, struct netlink_callback *cb);
diff --git a/net/smc/smc_loopback.c b/net/smc/smc_loopback.c
index 7335acb03920..c3e1133da8d7 100644
--- a/net/smc/smc_loopback.c
+++ b/net/smc/smc_loopback.c
@@ -275,10 +275,12 @@ static int smcd_lo_register_dev(struct smc_lo_dev *ldev)
return -ENOMEM;
ldev->smcd = smcd;
smcd->priv = ldev;
-
- /* TODO:
- * register loopback-ism to smcd_dev list.
- */
+ smc_ism_set_v2_capable();
+ mutex_lock(&smcd_dev_list.mutex);
+ list_add(&smcd->list, &smcd_dev_list.list);
+ mutex_unlock(&smcd_dev_list.mutex);
+ pr_warn_ratelimited("smc: adding smcd device %s\n",
+ smc_lo_dev_name);
return 0;
}
@@ -286,9 +288,13 @@ static void smcd_lo_unregister_dev(struct smc_lo_dev *ldev)
{
struct smcd_dev *smcd = ldev->smcd;
- /* TODO:
- * unregister loopback-ism from smcd_dev list.
- */
+ 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);
kfree(smcd->conn);
kfree(smcd);
}
--
2.32.0.3.g01195cf9f
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