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netvsc: fix warnings reported by lockdep

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This includes a bunch of fixups for issues reported by
lockdep.
   * ethtool routines can assume RTNL
   * send is done with RCU lock (and BH disable)
   * avoid refetching internal device struct (netvsc)
     instead pass it as a parameter.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger
2017-07-28 08:59:42 -07:00
committed by David S. Miller
parent d6aac1f218
commit 867047c451
4 changed files with 54 additions and 50 deletions
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2
drivers/net/hyperv/netvsc.c
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@@ -832,7 +832,7 @@ int netvsc_send(struct net_device_context *ndev_ctx,
struct sk_buff *skb)
{
struct netvsc_device *net_device
= rcu_dereference_rtnl(ndev_ctx->nvdev);
= rcu_dereference_bh(ndev_ctx->nvdev);
struct hv_device *device = ndev_ctx->device_ctx;
int ret = 0;
struct netvsc_channel *nvchan;