From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ajit Khaparde Subject: [PATCH net-next-2.6] be2net: Workaround to fix a bug in Rx Completion processing. Date: Wed, 30 Sep 2009 14:37:06 +0530 Message-ID: <20090930090656.GA5215@serverengines.com> Reply-To: Ajit Khaparde Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: davem@davemloft.net, netdev@vger.kernel.org Return-path: Received: from segment-124-30.sify.net ([124.30.166.146]:27528 "EHLO akhaparde.serverengines.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1752764AbZI3JG6 (ORCPT ); Wed, 30 Sep 2009 05:06:58 -0400 Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-ID: vtp bit in RX completion descriptor could be wrongly set in some skews of BladEngine. Ignore this bit if vtm is not set. This patch is against the net-next-2.6 tree. Signed-off-by: Ajit Khaparde --- drivers/net/benet/be.h | 1 + drivers/net/benet/be_cmds.c | 3 ++- drivers/net/benet/be_cmds.h | 3 ++- drivers/net/benet/be_main.c | 23 +++++++++++++++++++---- 4 files changed, 24 insertions(+), 6 deletions(-) diff --git a/drivers/net/benet/be.h b/drivers/net/benet/be.h index 13b72ce..7503b92 100644 --- a/drivers/net/benet/be.h +++ b/drivers/net/benet/be.h @@ -258,6 +258,7 @@ struct be_adapter { bool link_up; u32 port_num; bool promiscuous; + u32 cap; }; extern const struct ethtool_ops be_ethtool_ops; diff --git a/drivers/net/benet/be_cmds.c b/drivers/net/benet/be_cmds.c index 1db0924..513e47b 100644 --- a/drivers/net/benet/be_cmds.c +++ b/drivers/net/benet/be_cmds.c @@ -995,7 +995,7 @@ int be_cmd_get_flow_control(struct be_adapter *adapter, u32 *tx_fc, u32 *rx_fc) return status; } -int be_cmd_query_fw_cfg(struct be_adapter *adapter, u32 *port_num) +int be_cmd_query_fw_cfg(struct be_adapter *adapter, u32 *port_num, u32 *cap) { struct be_mcc_wrb *wrb = wrb_from_mbox(&adapter->mbox_mem); struct be_cmd_req_query_fw_cfg *req = embedded_payload(wrb); @@ -1014,6 +1014,7 @@ int be_cmd_query_fw_cfg(struct be_adapter *adapter, u32 *port_num) if (!status) { struct be_cmd_resp_query_fw_cfg *resp = embedded_payload(wrb); *port_num = le32_to_cpu(resp->phys_port); + *cap = le32_to_cpu(resp->function_cap); } spin_unlock(&adapter->mbox_lock); diff --git a/drivers/net/benet/be_cmds.h b/drivers/net/benet/be_cmds.h index fd7028e..f4fd74e 100644 --- a/drivers/net/benet/be_cmds.h +++ b/drivers/net/benet/be_cmds.h @@ -759,7 +759,8 @@ extern int be_cmd_set_flow_control(struct be_adapter *adapter, u32 tx_fc, u32 rx_fc); extern int be_cmd_get_flow_control(struct be_adapter *adapter, u32 *tx_fc, u32 *rx_fc); -extern int be_cmd_query_fw_cfg(struct be_adapter *adapter, u32 *port_num); +extern int be_cmd_query_fw_cfg(struct be_adapter *adapter, + u32 *port_num, u32 *cap); extern int be_cmd_reset_function(struct be_adapter *adapter); extern void be_process_mcc(struct be_adapter *adapter); extern int be_cmd_write_flashrom(struct be_adapter *adapter, diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c index ce11bba..44d2e6a 100644 --- a/drivers/net/benet/be_main.c +++ b/drivers/net/benet/be_main.c @@ -747,9 +747,16 @@ static void be_rx_compl_process(struct be_adapter *adapter, struct be_eth_rx_compl *rxcp) { struct sk_buff *skb; - u32 vtp, vid; + u32 vlanf, vid; + u8 vtm; - vtp = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp); + vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp); + vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp); + + /* vlanf could be wrongly set in some cards. + * ignore if vtm is not set */ + if ((adapter->cap == 0x400) && !vtm) + vlanf = 0; skb = netdev_alloc_skb(adapter->netdev, BE_HDR_LEN + NET_IP_ALIGN); if (!skb) { @@ -772,7 +779,7 @@ static void be_rx_compl_process(struct be_adapter *adapter, skb->protocol = eth_type_trans(skb, adapter->netdev); skb->dev = adapter->netdev; - if (vtp) { + if (vlanf) { if (!adapter->vlan_grp || adapter->num_vlans == 0) { kfree_skb(skb); return; @@ -797,11 +804,18 @@ static void be_rx_compl_process_gro(struct be_adapter *adapter, struct be_eq_obj *eq_obj = &adapter->rx_eq; u32 num_rcvd, pkt_size, remaining, vlanf, curr_frag_len; u16 i, rxq_idx = 0, vid, j; + u8 vtm; num_rcvd = AMAP_GET_BITS(struct amap_eth_rx_compl, numfrags, rxcp); pkt_size = AMAP_GET_BITS(struct amap_eth_rx_compl, pktsize, rxcp); vlanf = AMAP_GET_BITS(struct amap_eth_rx_compl, vtp, rxcp); rxq_idx = AMAP_GET_BITS(struct amap_eth_rx_compl, fragndx, rxcp); + vtm = AMAP_GET_BITS(struct amap_eth_rx_compl, vtm, rxcp); + + /* vlanf could be wrongly set in some cards. + * ignore if vtm is not set */ + if ((adapter->cap == 0x400) && !vtm) + vlanf = 0; skb = napi_get_frags(&eq_obj->napi); if (!skb) { @@ -2045,7 +2059,8 @@ static int be_hw_up(struct be_adapter *adapter) if (status) return status; - status = be_cmd_query_fw_cfg(adapter, &adapter->port_num); + status = be_cmd_query_fw_cfg(adapter, + &adapter->port_num, &adapter->cap); return status; } -- 1.6.0.4