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Commit f61a9d62 authored by Stephen Hemminger's avatar Stephen Hemminger Committed by David S. Miller
Browse files

hv_netvsc: track memory allocation failures in ethtool stats 



When skb can not be allocated, update ethtool statisitics
rather than rx_dropped which is intended for netif_receive.

Signed-off-by: default avatarStephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 26a11262

drivers/net/hyperv/hyperv_net.h

+1 −0
Original line number Diff line number Diff line
@@ -705,6 +705,7 @@ struct netvsc_ethtool_stats { 
	unsigned long tx_busy;

	unsigned long tx_send_full;

	unsigned long rx_comp_busy;

	unsigned long rx_no_memory;

	unsigned long stop_queue;

	unsigned long wake_queue;

};

drivers/net/hyperv/netvsc_drv.c

+3 −2
Original line number Diff line number Diff line
@@ -773,8 +773,8 @@ int netvsc_recv_callback(struct net_device *net, 
	skb = netvsc_alloc_recv_skb(net, &nvchan->napi,

				    csum_info, vlan, data, len);

	if (unlikely(!skb)) {

		++net_device_ctx->eth_stats.rx_no_memory;

drop:

		++net->stats.rx_dropped;

		rcu_read_unlock();

		return NVSP_STAT_FAIL;

	}
@@ -1131,6 +1131,7 @@ static const struct { 
	{ "tx_busy",	  offsetof(struct netvsc_ethtool_stats, tx_busy) },

	{ "tx_send_full", offsetof(struct netvsc_ethtool_stats, tx_send_full) },

	{ "rx_comp_busy", offsetof(struct netvsc_ethtool_stats, rx_comp_busy) },

	{ "rx_no_memory", offsetof(struct netvsc_ethtool_stats, rx_no_memory) },

	{ "stop_queue", offsetof(struct netvsc_ethtool_stats, stop_queue) },

	{ "wake_queue", offsetof(struct netvsc_ethtool_stats, wake_queue) },

}, vf_stats[] = {