From: Stephen Hemminger <stephen@networkplumber.org>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org, Mohammed Gamal <mgamal@redhat.com>
Subject: [PATCH net-stable 23/24] hv_netvsc: Fix net device attach on older Windows hosts
Date: Mon, 14 May 2018 15:32:22 -0700 [thread overview]
Message-ID: <20180514223223.25433-24-sthemmin@microsoft.com> (raw)
In-Reply-To: <20180514223223.25433-1-sthemmin@microsoft.com>
From: Mohammed Gamal <mgamal@redhat.com>
commit 55be9f25be1ca5bda75c39808fc77e42691bc07f upstream
On older windows hosts the net_device instance is returned to
the caller of rndis_filter_device_add() without having the presence
bit set first. This would cause any subsequent calls to network device
operations (e.g. MTU change, channel change) to fail after the device
is detached once, returning -ENODEV.
Instead of returning the device instabce, we take the exit path where
we call netif_device_attach()
Fixes: 7b2ee50c0cd5 ("hv_netvsc: common detach logic")
Signed-off-by: Mohammed Gamal <mgamal@redhat.com>
Reviewed-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/hyperv/rndis_filter.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index 3bfa56560286..6dde92c1c113 100644
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -1276,7 +1276,7 @@ struct netvsc_device *rndis_filter_device_add(struct hv_device *dev,
rndis_device->link_state ? "down" : "up");
if (net_device->nvsp_version < NVSP_PROTOCOL_VERSION_5)
- return net_device;
+ goto out;
rndis_filter_query_link_speed(rndis_device, net_device);
--
2.17.0
next prev parent reply other threads:[~2018-05-14 22:33 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-14 22:31 [PATCH net-stable 00/24] hv_netvsc patches for 4.14 stable Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 01/24] hv_netvsc: Fix the real number of queues of non-vRSS cases Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 02/24] hv_netvsc: Rename ind_table to rx_table Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 03/24] hv_netvsc: Rename tx_send_table to tx_table Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 04/24] hv_netvsc: Add initialization of tx_table in netvsc_device_add() Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 05/24] hv_netvsc: Set tx_table to equal weight after subchannels open Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 06/24] hv_netvsc: netvsc_teardown_gpadl() split Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 07/24] hv_netvsc: preserve hw_features on mtu/channels/ringparam changes Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 08/24] hv_netvsc: empty current transmit aggregation if flow blocked Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 09/24] hv_netvsc: Use the num_online_cpus() for channel limit Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 10/24] hv_netvsc: avoid retry on send during shutdown Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 11/24] hv_netvsc: only wake transmit queue if link is up Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 12/24] hv_netvsc: fix error unwind handling if vmbus_open fails Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 13/24] hv_netvsc: cancel subchannel setup before halting device Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 14/24] hv_netvsc: fix race in napi poll when rescheduling Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 15/24] hv_netvsc: defer queue selection to VF Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 16/24] hv_netvsc: disable NAPI before channel close Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 17/24] hv_netvsc: use RCU to fix concurrent rx and queue changes Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 18/24] hv_netvsc: change GPAD teardown order on older versions Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 19/24] hv_netvsc: common detach logic Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 20/24] hv_netvsc: Use Windows version instead of NVSP version on GPAD teardown Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 21/24] hv_netvsc: Split netvsc_revoke_buf() and netvsc_teardown_gpadl() Stephen Hemminger
2018-05-14 22:32 ` [PATCH net-stable 22/24] hv_netvsc: Ensure correct teardown message sequence order Stephen Hemminger
2018-05-14 22:32 ` Stephen Hemminger [this message]
2018-05-14 22:32 ` [PATCH net-stable 24/24] hv_netvsc: set master device Stephen Hemminger
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