[PATCH 05/14] cifs: force interface update before a fresh session setup

From: nspmangalore@gmail.com
To: smfrench@gmail.com, pc@manguebit.com, bharathsm.hsk@gmail.com,
	linux-cifs@vger.kernel.org
Cc: Shyam Prasad N <sprasad@microsoft.com>
Subject: [PATCH 05/14] cifs: force interface update before a fresh session setup
Date: Mon, 30 Oct 2023 11:00:11 +0000	[thread overview]
Message-ID: <20231030110020.45627-5-sprasad@microsoft.com> (raw)
In-Reply-To: <20231030110020.45627-1-sprasad@microsoft.com>

From: Shyam Prasad N <sprasad@microsoft.com>

During a session reconnect, it is possible that the
server moved to another physical server (happens in case
of Azure files). So at this time, force a query of server
interfaces again (in case of multichannel session), such
that the secondary channels connect to the right
IP addresses (possibly updated now).

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
---
 fs/smb/client/connect.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c
index c993c7a3415a..97c9a32cff36 100644
--- a/fs/smb/client/connect.c
+++ b/fs/smb/client/connect.c
@@ -3854,8 +3854,12 @@ cifs_setup_session(const unsigned int xid, struct cifs_ses *ses,
 	is_binding = !CIFS_ALL_CHANS_NEED_RECONNECT(ses);
 	spin_unlock(&ses->chan_lock);
 
-	if (!is_binding)
+	if (!is_binding) {
 		ses->ses_status = SES_IN_SETUP;
+
+		/* force iface_list refresh */
+		ses->iface_last_update = 0;
+	}
 	spin_unlock(&ses->ses_lock);
 
 	/* update ses ip_addr only for primary chan */
-- 
2.34.1

