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authorAmit Kumar Salecha <amit.salecha@qlogic.com>2010-04-22 06:51:35 +0400
committerDavid S. Miller <davem@davemloft.net>2010-04-23 02:28:26 +0400
commit8ae6df978b986a5ce099e7e7118f127563d2cbbe (patch)
tree3caffdbc168440397c2d20a0627c0254188b6bbf /drivers/net
parente802af9cabb011f09b9c19a82faef3dd315f27eb (diff)
downloadlinux-8ae6df978b986a5ce099e7e7118f127563d2cbbe.tar.xz
qlcnic: additional driver statistics
Added additional driver statistics to track errors in rcv/tx path. Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/qlcnic/qlcnic.h4
-rw-r--r--drivers/net/qlcnic/qlcnic_ethtool.c8
-rw-r--r--drivers/net/qlcnic/qlcnic_init.c7
-rw-r--r--drivers/net/qlcnic/qlcnic_main.c4
4 files changed, 21 insertions, 2 deletions
diff --git a/drivers/net/qlcnic/qlcnic.h b/drivers/net/qlcnic/qlcnic.h
index 28c148cbe37b..6c1da71025e1 100644
--- a/drivers/net/qlcnic/qlcnic.h
+++ b/drivers/net/qlcnic/qlcnic.h
@@ -428,6 +428,10 @@ struct qlcnic_adapter_stats {
u64 xmit_on;
u64 xmit_off;
u64 skb_alloc_failure;
+ u64 null_skb;
+ u64 null_rxbuf;
+ u64 rx_dma_map_error;
+ u64 tx_dma_map_error;
};
/*
diff --git a/drivers/net/qlcnic/qlcnic_ethtool.c b/drivers/net/qlcnic/qlcnic_ethtool.c
index 08d6f105371f..6cdc5ebb7411 100644
--- a/drivers/net/qlcnic/qlcnic_ethtool.c
+++ b/drivers/net/qlcnic/qlcnic_ethtool.c
@@ -69,6 +69,14 @@ static const struct qlcnic_stats qlcnic_gstrings_stats[] = {
QLC_SIZEOF(stats.xmit_off), QLC_OFF(stats.xmit_off)},
{"skb_alloc_failure", QLC_SIZEOF(stats.skb_alloc_failure),
QLC_OFF(stats.skb_alloc_failure)},
+ {"null skb",
+ QLC_SIZEOF(stats.null_skb), QLC_OFF(stats.null_skb)},
+ {"null rxbuf",
+ QLC_SIZEOF(stats.null_rxbuf), QLC_OFF(stats.null_rxbuf)},
+ {"rx dma map error", QLC_SIZEOF(stats.rx_dma_map_error),
+ QLC_OFF(stats.rx_dma_map_error)},
+ {"tx dma map error", QLC_SIZEOF(stats.tx_dma_map_error),
+ QLC_OFF(stats.tx_dma_map_error)},
};
diff --git a/drivers/net/qlcnic/qlcnic_init.c b/drivers/net/qlcnic/qlcnic_init.c
index 01ce74ee99f9..9ef9f58f84dd 100644
--- a/drivers/net/qlcnic/qlcnic_init.c
+++ b/drivers/net/qlcnic/qlcnic_init.c
@@ -1287,6 +1287,7 @@ qlcnic_alloc_rx_skb(struct qlcnic_adapter *adapter,
rds_ring->dma_size, PCI_DMA_FROMDEVICE);
if (pci_dma_mapping_error(pdev, dma)) {
+ adapter->stats.rx_dma_map_error++;
dev_kfree_skb_any(skb);
buffer->skb = NULL;
return -ENOMEM;
@@ -1311,8 +1312,10 @@ static struct sk_buff *qlcnic_process_rxbuf(struct qlcnic_adapter *adapter,
PCI_DMA_FROMDEVICE);
skb = buffer->skb;
- if (!skb)
+ if (!skb) {
+ adapter->stats.null_skb++;
goto no_skb;
+ }
if (likely(adapter->rx_csum && cksum == STATUS_CKSUM_OK)) {
adapter->stats.csummed++;
@@ -1502,6 +1505,8 @@ qlcnic_process_rcv_ring(struct qlcnic_host_sds_ring *sds_ring, int max)
if (rxbuf)
list_add_tail(&rxbuf->list, &sds_ring->free_list[ring]);
+ else
+ adapter->stats.null_rxbuf++;
skip:
for (; desc_cnt > 0; desc_cnt--) {
diff --git a/drivers/net/qlcnic/qlcnic_main.c b/drivers/net/qlcnic/qlcnic_main.c
index e4fd5dcdfb4c..5845dc0616b1 100644
--- a/drivers/net/qlcnic/qlcnic_main.c
+++ b/drivers/net/qlcnic/qlcnic_main.c
@@ -1589,8 +1589,10 @@ qlcnic_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
pdev = adapter->pdev;
- if (qlcnic_map_tx_skb(pdev, skb, pbuf))
+ if (qlcnic_map_tx_skb(pdev, skb, pbuf)) {
+ adapter->stats.tx_dma_map_error++;
goto drop_packet;
+ }
pbuf->skb = skb;
pbuf->frag_count = frag_count;