From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sathya Perla Subject: [PATCH net-next 05/12] be2net: Add a dma_mapping_error counter in ethtool Date: Mon, 1 Sep 2014 11:54:17 +0530 Message-ID: <1409552664-15990-6-git-send-email-sathya.perla@emulex.com> References: <1409552664-15990-1-git-send-email-sathya.perla@emulex.com> Mime-Version: 1.0 Content-Type: text/plain To: Return-path: Received: from cmexedge2.ext.emulex.com ([138.239.224.100]:19158 "EHLO CMEXEDGE2.ext.emulex.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751251AbaIAGVz (ORCPT ); Mon, 1 Sep 2014 02:21:55 -0400 In-Reply-To: <1409552664-15990-1-git-send-email-sathya.perla@emulex.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Vasundhara Volam 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 --- drivers/net/ethernet/emulex/benet/be.h | 1 + drivers/net/ethernet/emulex/benet/be_ethtool.c | 2 ++ drivers/net/ethernet/emulex/benet/be_main.c | 3 ++- 3 files changed, 5 insertions(+), 1 deletions(-) diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index d491ac6..069bdda 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 3a7ade4..2fd3826 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 e9658f7..c95998f 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; -- 1.7.1