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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: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Hemminger 2017-12-12 16:48:36 -08:00 committed by David S. Miller
parent 26a112626d
commit f61a9d62b2
2 changed files with 4 additions and 2 deletions
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1
drivers/net/hyperv/hyperv_net.h
View File

@ -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;
};

5
drivers/net/hyperv/netvsc_drv.c
View File

@ -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;
}
@ -1125,12 +1125,13 @@ static const struct {
u16 offset;
} netvsc_stats[] = {
{ "tx_scattered", offsetof(struct netvsc_ethtool_stats, tx_scattered) },
{ "tx_no_memory", offsetof(struct netvsc_ethtool_stats, tx_no_memory) },
{ "tx_no_memory", offsetof(struct netvsc_ethtool_stats, tx_no_memory) },
{ "tx_no_space", offsetof(struct netvsc_ethtool_stats, tx_no_space) },
{ "tx_too_big", offsetof(struct netvsc_ethtool_stats, tx_too_big) },
{ "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[] = {