From: Wei Liu <wei.liu2@citrix.com>
To: ian.campbell@citrix.com, konrad.wilk@oracle.com,
xen-devel@lists.xensource.com, netdev@vger.kernel.org
Cc: Wei Liu <wei.liu2@citrix.com>
Subject: [RFC PATCH 4/6] netback: add module get/put operations along with vif connect/disconnect.
Date: Fri, 13 Jan 2012 16:59:07 +0000 [thread overview]
Message-ID: <1326473949-22389-5-git-send-email-wei.liu2@citrix.com> (raw)
In-Reply-To: <1326473949-22389-1-git-send-email-wei.liu2@citrix.com>
If there is vif running and user unloads netback, it will certainly
cause problems.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
---
drivers/net/xen-netback/interface.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c
index 93cb212..3126028 100644
--- a/drivers/net/xen-netback/interface.c
+++ b/drivers/net/xen-netback/interface.c
@@ -323,6 +323,8 @@ int xenvif_connect(struct xenvif *vif, unsigned long tx_ring_ref,
if (vif->irq)
return 0;
+ __module_get(THIS_MODULE);
+
err = xen_netbk_map_frontend_rings(vif, tx_ring_ref, rx_ring_ref);
if (err < 0)
goto err;
@@ -405,4 +407,6 @@ void xenvif_disconnect(struct xenvif *vif)
xen_netbk_unmap_frontend_rings(vif);
free_netdev(vif->dev);
+
+ module_put(THIS_MODULE);
}
--
1.7.2.5
next prev parent reply other threads:[~2012-01-13 16:59 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-13 16:59 [RFC PATCH] New Xen netback implementation Wei Liu
2012-01-13 16:59 ` [RFC PATCH 1/6] netback: page pool version 1 Wei Liu
2012-01-13 17:37 ` Konrad Rzeszutek Wilk
2012-01-16 9:31 ` Wei Liu
2012-01-13 16:59 ` [RFC PATCH 2/6] netback: add module unload function Wei Liu
2012-01-13 17:57 ` [Xen-devel] " David Vrabel
2012-01-16 9:31 ` Wei Liu
2012-01-13 18:47 ` David Vrabel
2012-01-13 16:59 ` [RFC PATCH 3/6] netback: switch to NAPI + kthread model Wei Liu
2012-01-13 18:21 ` [Xen-devel] " David Vrabel
2012-01-16 9:33 ` Wei Liu
2012-01-16 10:45 ` Ian Campbell
2012-01-16 10:49 ` Wei Liu
2012-01-16 10:56 ` Paul Durrant
2012-01-16 11:09 ` Ian Campbell
2012-01-16 11:46 ` David Vrabel
2012-01-16 10:14 ` Paul Durrant
2012-01-16 10:31 ` Ian Campbell
2012-01-13 16:59 ` Wei Liu [this message]
2012-01-13 18:44 ` [Xen-devel] [RFC PATCH 4/6] netback: add module get/put operations along with vif connect/disconnect David Vrabel
2012-01-16 9:43 ` Wei Liu
2012-01-13 16:59 ` [RFC PATCH 5/6] netback: melt xen_netbk into xenvif Wei Liu
2012-01-13 16:59 ` [RFC PATCH 6/6] netback: alter internal function/structure names Wei Liu
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