From: Vasundhara Volam Date: Tue, 2 Sep 2014 04:26:50 +0000 (+0530) Subject: be2net: Add a dma_mapping_error counter in ethtool X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d3de154071c14549c4b99d06a063bf3761e482c3;p=linux-beck.git 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: Vasundhara Volam Signed-off-by: Sathya Perla Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index d491ac614dcf..069bdda00c55 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -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; diff --git a/drivers/net/ethernet/emulex/benet/be_ethtool.c b/drivers/net/ethernet/emulex/benet/be_ethtool.c index 3a7ade4b313a..2fd38261bedb 100644 --- a/drivers/net/ethernet/emulex/benet/be_ethtool.c +++ b/drivers/net/ethernet/emulex/benet/be_ethtool.c @@ -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)}, diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 7b6dbf880a66..6c2eb6978601 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -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;