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be2net: Add a dma_mapping_error counter in ethtool

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Add a dma_mapping_error counter to count the number of packets dropped
due to DMA mapping errors.

Signed-off-by: Vasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vasundhara Volam
2014-09-02 09:56:50 +05:30
committed by David S. Miller
parent 512bb8a244
commit d3de154071
3 changed files with 5 additions and 1 deletions
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1
drivers/net/ethernet/emulex/benet/be.h
View File

@ -323,6 +323,7 @@ struct be_rx_obj {
struct be_drv_stats {
u32 be_on_die_temperature;
u32 eth_red_drops;
u32 dma_map_errors;
u32 rx_drops_no_pbuf;
u32 rx_drops_no_txpb;
u32 rx_drops_no_erx_descr;

2
drivers/net/ethernet/emulex/benet/be_ethtool.c
View File

@ -119,6 +119,8 @@ static const struct be_ethtool_stat et_stats[] = {
* is more than 9018 bytes
*/
{DRVSTAT_INFO(rx_drops_mtu)},
/* Number of dma mapping errors */
{DRVSTAT_INFO(dma_map_errors)},
/* Number of packets dropped due to random early drop function */
{DRVSTAT_INFO(eth_red_drops)},
{DRVSTAT_INFO(be_on_die_temperature)},

3
drivers/net/ethernet/emulex/benet/be_main.c
View File

@ -849,6 +849,7 @@ dma_err:
unmap_tx_frag(dev, wrb, map_single);
map_single = false;
copied -= wrb->frag_len;
adapter->drv_stats.dma_map_errors++;
queue_head_inc(txq);
}
return 0;
@ -1877,7 +1878,7 @@ static void be_post_rx_frags(struct be_rx_obj *rxo, gfp_t gfp)
if (dma_mapping_error(dev, page_dmaaddr)) {
put_page(pagep);
pagep = NULL;
rx_stats(rxo)->rx_post_fail++;
adapter->drv_stats.dma_map_errors++;
break;
}
page_offset = 0;