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Commit d3de1540 authored by Vasundhara Volam's avatar Vasundhara Volam Committed by David S. Miller
Browse files

be2net: Add a dma_mapping_error counter in ethtool 



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

Signed-off-by: default avatarVasundhara Volam <vasundhara.volam@emulex.com>
Signed-off-by: default avatarSathya Perla <sathya.perla@emulex.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 512bb8a2

drivers/net/ethernet/emulex/benet/be.h

+1 −0
Original line number Diff line number Diff line
@@ -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;

drivers/net/ethernet/emulex/benet/be_ethtool.c

+2 −0
Original line number Diff line number Diff line
@@ -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)},

drivers/net/ethernet/emulex/benet/be_main.c

+2 −1
Original line number Diff line number Diff line
@@ -849,6 +849,7 @@ static int make_tx_wrbs(struct be_adapter *adapter, struct be_queue_info *txq, 
		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;