From: Karsten Graul <kgraul@linux.ibm.com>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org, linux-s390@vger.kernel.org,
heiko.carstens@de.ibm.com, raspl@linux.ibm.com,
ubraun@linux.ibm.com
Subject: [PATCH net-next 2/4] net/smc: guarantee removal of link groups in reboot
Date: Sat, 16 Nov 2019 17:47:30 +0100 [thread overview]
Message-ID: <20191116164732.47059-3-kgraul@linux.ibm.com> (raw)
In-Reply-To: <20191116164732.47059-1-kgraul@linux.ibm.com>
From: Ursula Braun <ubraun@linux.ibm.com>
When rebooting it should be guaranteed all link groups are cleaned
up and freed.
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
---
net/smc/smc_core.c | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index cf34b9d96595..bb92c7c6214c 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -14,6 +14,7 @@
#include <linux/random.h>
#include <linux/workqueue.h>
#include <linux/wait.h>
+#include <linux/reboot.h>
#include <net/tcp.h>
#include <net/sock.h>
#include <rdma/ib_verbs.h>
@@ -1282,14 +1283,27 @@ static void smc_lgrs_shutdown(void)
spin_unlock(&smcd_dev_list.lock);
}
+static int smc_core_reboot_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ smc_lgrs_shutdown();
+
+ return 0;
+}
+
+static struct notifier_block smc_reboot_notifier = {
+ .notifier_call = smc_core_reboot_event,
+};
+
int __init smc_core_init(void)
{
atomic_set(&lgr_cnt, 0);
- return 0;
+ return register_reboot_notifier(&smc_reboot_notifier);
}
/* Called (from smc_exit) when module is removed */
void smc_core_exit(void)
{
+ unregister_reboot_notifier(&smc_reboot_notifier);
smc_lgrs_shutdown();
}
--
2.17.1
next prev parent reply other threads:[~2019-11-16 16:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-16 16:47 [PATCH net-next 0/4] last part of termination improvements Karsten Graul
2019-11-16 16:47 ` [PATCH net-next 1/4] net/smc: introduce bookkeeping of SMCR link groups Karsten Graul
2019-11-16 16:47 ` Karsten Graul [this message]
2019-11-16 16:47 ` [PATCH net-next 3/4] net/smc: use rcu_barrier() on module unload Karsten Graul
2019-11-16 16:47 ` [PATCH net-next 4/4] net/smc: remove unused constant Karsten Graul
2019-11-16 20:27 ` [PATCH net-next 0/4] last part of termination improvements David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191116164732.47059-3-kgraul@linux.ibm.com \
--to=kgraul@linux.ibm.com \
--cc=davem@davemloft.net \
--cc=heiko.carstens@de.ibm.com \
--cc=linux-s390@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=raspl@linux.ibm.com \
--cc=ubraun@linux.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).