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hv_netvsc: Add initialization of tx_table in netvsc_device_add()

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[ Commit 6b0cbe3158 upstream. ]

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Haiyang Zhang
2018-05-14 15:32:03 -07:00
committed by Greg Kroah-Hartman
parent b3a303352e
commit ef1c5903cd
1 changed files with 3 additions and 0 deletions
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3
drivers/net/hyperv/netvsc.c
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@@ -1252,6 +1252,9 @@ 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