From: Haiyang Zhang <haiyangz@microsoft.com>
Date: Fri, 13 Oct 2017 12:28:05 -0700
Patch-mainline: v4.15-rc1
Subject: hv_netvsc: Add initialization of tx_table in netvsc_device_add()
Git-commit: 6b0cbe315868d613123cf387052ccda5f09d49ea
References: fate#323887
tx_table is part of the private data of kernel net_device. It is only
zero-ed out when allocating net_device.
We may recreate netvsc_device w/o recreating net_device, so the private
netdev data, including tx_table, are not zeroed. It may contain channel
numbers for the older netvsc_device.
This patch adds initialization of tx_table each time we recreate
netvsc_device.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Olaf Hering <ohering@suse.de>
---
drivers/net/hyperv/netvsc.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -1255,6 +1255,9 @@ struct netvsc_device *netvsc_device_add(struct hv_device *device,
if (!net_device)
return ERR_PTR(-ENOMEM);
+ for (i = 0; i < VRSS_SEND_TAB_SIZE; i++)
+ net_device_ctx->tx_table[i] = 0;
+
net_device->ring_size = ring_size;
/* Because the device uses NAPI, all the interrupt batching and