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Wed, 7 Oct 2020 15:25:15 +0000 From: sven.auhagen@voleatech.de To: anthony.l.nguyen@intel.com, maciej.fijalkowski@intel.com Cc: davem@davemloft.net, netdev@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, sandeep.penigalapati@intel.com, brouer@redhat.com Subject: [PATCH 1/7] igb: XDP xmit back fix error code Date: Wed, 7 Oct 2020 17:25:00 +0200 Message-Id: <20201007152506.66217-2-sven.auhagen@voleatech.de> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20201007152506.66217-1-sven.auhagen@voleatech.de> References: <20201007152506.66217-1-sven.auhagen@voleatech.de> X-Originating-IP: [109.193.235.168] X-ClientProxiedBy: AM0PR05CA0077.eurprd05.prod.outlook.com (2603:10a6:208:136::17) To AM8PR05MB7251.eurprd05.prod.outlook.com (2603:10a6:20b:1d4::23) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from svensmacbookair.sven.lan (109.193.235.168) by AM0PR05CA0077.eurprd05.prod.outlook.com (2603:10a6:208:136::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3455.21 via Frontend Transport; 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Signed-off-by: Sven Auhagen --- drivers/net/ethernet/intel/igb/igb_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 5fc2c381da55..08cc6f59aa2e 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -2910,7 +2910,7 @@ static int igb_xdp_xmit_back(struct igb_adapter *adapter, struct xdp_buff *xdp) */ tx_ring = adapter->xdp_prog ? igb_xdp_tx_queue_mapping(adapter) : NULL; if (unlikely(!tx_ring)) - return -ENXIO; + return IGB_XDP_CONSUMED; nq = txring_txq(tx_ring); __netif_tx_lock(nq, cpu); From patchwork Wed Oct 7 15:25:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sven Auhagen X-Patchwork-Id: 1378058 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; 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Wed, 7 Oct 2020 15:25:16 +0000 From: sven.auhagen@voleatech.de To: anthony.l.nguyen@intel.com, maciej.fijalkowski@intel.com Cc: davem@davemloft.net, netdev@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, sandeep.penigalapati@intel.com, brouer@redhat.com Subject: [PATCH 2/7] igb: take vlan double header into account Date: Wed, 7 Oct 2020 17:25:01 +0200 Message-Id: <20201007152506.66217-3-sven.auhagen@voleatech.de> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20201007152506.66217-1-sven.auhagen@voleatech.de> References: <20201007152506.66217-1-sven.auhagen@voleatech.de> X-Originating-IP: [109.193.235.168] X-ClientProxiedBy: AM0PR05CA0077.eurprd05.prod.outlook.com (2603:10a6:208:136::17) To AM8PR05MB7251.eurprd05.prod.outlook.com (2603:10a6:20b:1d4::23) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from svensmacbookair.sven.lan (109.193.235.168) by AM0PR05CA0077.eurprd05.prod.outlook.com (2603:10a6:208:136::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3455.21 via Frontend Transport; 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This patch uses a macro for this. Signed-off-by: Sven Auhagen --- drivers/net/ethernet/intel/igb/igb.h | 5 +++++ drivers/net/ethernet/intel/igb/igb_main.c | 7 +++---- 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h index 0286d2fceee4..7afb67cf9b94 100644 --- a/drivers/net/ethernet/intel/igb/igb.h +++ b/drivers/net/ethernet/intel/igb/igb.h @@ -138,6 +138,8 @@ struct vf_mac_filter { /* this is the size past which hardware will drop packets when setting LPE=0 */ #define MAXIMUM_ETHERNET_VLAN_SIZE 1522 +#define IGB_ETH_PKT_HDR_PAD (ETH_HLEN + ETH_FCS_LEN + (VLAN_HLEN * 2)) + /* Supported Rx Buffer Sizes */ #define IGB_RXBUFFER_256 256 #define IGB_RXBUFFER_1536 1536 @@ -247,6 +249,9 @@ enum igb_tx_flags { #define IGB_SFF_ADDRESSING_MODE 0x4 #define IGB_SFF_8472_UNSUP 0x00 +/* TX ressources are shared between XDP and netstack + * and we need to tag the buffer type to distinguish them + */ enum igb_tx_buf_type { IGB_TYPE_SKB = 0, IGB_TYPE_XDP, diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 08cc6f59aa2e..0a9198037b98 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -2826,7 +2826,7 @@ static int igb_setup_tc(struct net_device *dev, enum tc_setup_type type, static int igb_xdp_setup(struct net_device *dev, struct bpf_prog *prog) { - int i, frame_size = dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; + int i, frame_size = dev->mtu + IGB_ETH_PKT_HDR_PAD; struct igb_adapter *adapter = netdev_priv(dev); bool running = netif_running(dev); struct bpf_prog *old_prog; @@ -3950,8 +3950,7 @@ static int igb_sw_init(struct igb_adapter *adapter) /* set default work limits */ adapter->tx_work_limit = IGB_DEFAULT_TX_WORK; - adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + - VLAN_HLEN; + adapter->max_frame_size = netdev->mtu + IGB_ETH_PKT_HDR_PAD; adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; spin_lock_init(&adapter->nfc_lock); @@ -6491,7 +6490,7 @@ static void igb_get_stats64(struct net_device *netdev, static int igb_change_mtu(struct net_device *netdev, int new_mtu) { struct igb_adapter *adapter = netdev_priv(netdev); - int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; + int max_frame = new_mtu + IGB_ETH_PKT_HDR_PAD; if (adapter->xdp_prog) { int i; From patchwork Wed Oct 7 15:25:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sven Auhagen X-Patchwork-Id: 1378059 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; 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Wed, 7 Oct 2020 15:25:17 +0000 From: sven.auhagen@voleatech.de To: anthony.l.nguyen@intel.com, maciej.fijalkowski@intel.com Cc: davem@davemloft.net, netdev@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, sandeep.penigalapati@intel.com, brouer@redhat.com Subject: [PATCH 3/7] igb: XDP extack message on error Date: Wed, 7 Oct 2020 17:25:02 +0200 Message-Id: <20201007152506.66217-4-sven.auhagen@voleatech.de> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20201007152506.66217-1-sven.auhagen@voleatech.de> References: <20201007152506.66217-1-sven.auhagen@voleatech.de> X-Originating-IP: [109.193.235.168] X-ClientProxiedBy: AM0PR05CA0077.eurprd05.prod.outlook.com (2603:10a6:208:136::17) To AM8PR05MB7251.eurprd05.prod.outlook.com (2603:10a6:20b:1d4::23) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from svensmacbookair.sven.lan (109.193.235.168) by AM0PR05CA0077.eurprd05.prod.outlook.com (2603:10a6:208:136::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3455.21 via Frontend Transport; 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Signed-off-by: Sven Auhagen Reviewed-by: Maciej Fijalkowski --- drivers/net/ethernet/intel/igb/igb_main.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 0a9198037b98..088f9ddb0093 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -2824,20 +2824,22 @@ static int igb_setup_tc(struct net_device *dev, enum tc_setup_type type, } } -static int igb_xdp_setup(struct net_device *dev, struct bpf_prog *prog) +static int igb_xdp_setup(struct net_device *dev, struct netdev_bpf *bpf) { int i, frame_size = dev->mtu + IGB_ETH_PKT_HDR_PAD; struct igb_adapter *adapter = netdev_priv(dev); + struct bpf_prog *prog = bpf->prog, *old_prog; bool running = netif_running(dev); - struct bpf_prog *old_prog; bool need_reset; /* verify igb ring attributes are sufficient for XDP */ for (i = 0; i < adapter->num_rx_queues; i++) { struct igb_ring *ring = adapter->rx_ring[i]; - if (frame_size > igb_rx_bufsz(ring)) + if (frame_size > igb_rx_bufsz(ring)) { + NL_SET_ERR_MSG_MOD(bpf->extack, "The RX buffer size is too small for the frame size"); return -EINVAL; + } } old_prog = xchg(&adapter->xdp_prog, prog); @@ -2869,7 +2871,7 @@ static int igb_xdp(struct net_device *dev, struct netdev_bpf *xdp) { switch (xdp->command) { case XDP_SETUP_PROG: - return igb_xdp_setup(dev, xdp->prog); + return igb_xdp_setup(dev, xdp); default: return -EINVAL; } @@ -6499,7 +6501,7 @@ static int igb_change_mtu(struct net_device *netdev, int new_mtu) struct igb_ring *ring = adapter->rx_ring[i]; if (max_frame > igb_rx_bufsz(ring)) { - netdev_warn(adapter->netdev, "Requested MTU size is not supported with XDP\n"); + netdev_warn(adapter->netdev, "Requested MTU size is not supported with XDP. Max frame size is %d\n", max_frame); return -EINVAL; } } From patchwork Wed Oct 7 15:25:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sven Auhagen X-Patchwork-Id: 1378060 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=voleatech.de Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=voleatech.de header.i=@voleatech.de header.a=rsa-sha256 header.s=selector2 header.b=dJuduJ69; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4C5yp46tFdz9sTR for ; 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#if (PAGE_SIZE < 8192) unsigned int truesize = igb_rx_pg_size(rx_ring) / 2; #else @@ -8366,6 +8367,9 @@ static struct sk_buff *igb_build_skb(struct igb_ring *rx_ring, skb_reserve(skb, xdp->data - xdp->data_hard_start); __skb_put(skb, xdp->data_end - xdp->data); + if (metasize) + skb_metadata_set(skb, metasize); + /* pull timestamp out of packet data */ if (igb_test_staterr(rx_desc, E1000_RXDADV_STAT_TSIP)) { igb_ptp_rx_pktstamp(rx_ring->q_vector, skb->data, skb); From patchwork Wed Oct 7 15:25:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sven Auhagen X-Patchwork-Id: 1378061 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; 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Signed-off-by: Sven Auhagen --- drivers/net/ethernet/intel/igb/igb_main.c | 87 +++++++++-------------- 1 file changed, 35 insertions(+), 52 deletions(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 36ff8725fdaf..f34faf24190a 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -8255,6 +8255,34 @@ static bool igb_can_reuse_rx_page(struct igb_rx_buffer *rx_buffer) return true; } +static unsigned int igb_rx_frame_truesize(struct igb_ring *rx_ring, + unsigned int size) +{ + unsigned int truesize; + +#if (PAGE_SIZE < 8192) + truesize = igb_rx_pg_size(rx_ring) / 2; /* Must be power-of-2 */ +#else + truesize = ring_uses_build_skb(rx_ring) ? + SKB_DATA_ALIGN(IGB_SKB_PAD + size) + + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) : + SKB_DATA_ALIGN(size); +#endif + return truesize; +} + +static void igb_rx_buffer_flip(struct igb_ring *rx_ring, + struct igb_rx_buffer *rx_buffer, + unsigned int size) +{ + unsigned int truesize = igb_rx_frame_truesize(rx_ring, size); +#if (PAGE_SIZE < 8192) + rx_buffer->page_offset ^= truesize; +#else + rx_buffer->page_offset += truesize; +#endif +} + /** * igb_add_rx_frag - Add contents of Rx buffer to sk_buff * @rx_ring: rx descriptor ring to transact packets on @@ -8269,20 +8297,12 @@ static void igb_add_rx_frag(struct igb_ring *rx_ring, struct sk_buff *skb, unsigned int size) { -#if (PAGE_SIZE < 8192) - unsigned int truesize = igb_rx_pg_size(rx_ring) / 2; -#else - unsigned int truesize = ring_uses_build_skb(rx_ring) ? - SKB_DATA_ALIGN(IGB_SKB_PAD + size) : - SKB_DATA_ALIGN(size); -#endif + unsigned int truesize = igb_rx_frame_truesize(rx_ring, size); + skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, rx_buffer->page, rx_buffer->page_offset, size, truesize); -#if (PAGE_SIZE < 8192) - rx_buffer->page_offset ^= truesize; -#else - rx_buffer->page_offset += truesize; -#endif + + igb_rx_buffer_flip(rx_ring, rx_buffer, size); } static struct sk_buff *igb_construct_skb(struct igb_ring *rx_ring, @@ -8345,14 +8365,9 @@ static struct sk_buff *igb_build_skb(struct igb_ring *rx_ring, struct xdp_buff *xdp, union e1000_adv_rx_desc *rx_desc) { + unsigned int size = xdp->data_end - xdp->data_hard_start; + unsigned int truesize = igb_rx_frame_truesize(rx_ring, size); unsigned int metasize = xdp->data - xdp->data_meta; -#if (PAGE_SIZE < 8192) - unsigned int truesize = igb_rx_pg_size(rx_ring) / 2; -#else - unsigned int truesize = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + - SKB_DATA_ALIGN(xdp->data_end - - xdp->data_hard_start); -#endif struct sk_buff *skb; /* prefetch first cache line of first page */ @@ -8377,11 +8392,7 @@ static struct sk_buff *igb_build_skb(struct igb_ring *rx_ring, } /* update buffer offset */ -#if (PAGE_SIZE < 8192) - rx_buffer->page_offset ^= truesize; -#else - rx_buffer->page_offset += truesize; -#endif + igb_rx_buffer_flip(rx_ring, rx_buffer, size); return skb; } @@ -8431,34 +8442,6 @@ static struct sk_buff *igb_run_xdp(struct igb_adapter *adapter, return ERR_PTR(-result); } -static unsigned int igb_rx_frame_truesize(struct igb_ring *rx_ring, - unsigned int size) -{ - unsigned int truesize; - -#if (PAGE_SIZE < 8192) - truesize = igb_rx_pg_size(rx_ring) / 2; /* Must be power-of-2 */ -#else - truesize = ring_uses_build_skb(rx_ring) ? - SKB_DATA_ALIGN(IGB_SKB_PAD + size) + - SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) : - SKB_DATA_ALIGN(size); -#endif - return truesize; -} - -static void igb_rx_buffer_flip(struct igb_ring *rx_ring, - struct igb_rx_buffer *rx_buffer, - unsigned int size) -{ - unsigned int truesize = igb_rx_frame_truesize(rx_ring, size); -#if (PAGE_SIZE < 8192) - rx_buffer->page_offset ^= truesize; -#else - rx_buffer->page_offset += truesize; -#endif -} - static inline void igb_rx_checksum(struct igb_ring *ring, union e1000_adv_rx_desc *rx_desc, struct sk_buff *skb) From patchwork Wed Oct 7 15:25:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sven Auhagen X-Patchwork-Id: 1378062 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; 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Wed, 7 Oct 2020 15:25:19 +0000 From: sven.auhagen@voleatech.de To: anthony.l.nguyen@intel.com, maciej.fijalkowski@intel.com Cc: davem@davemloft.net, netdev@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, sandeep.penigalapati@intel.com, brouer@redhat.com Subject: [PATCH 6/7] igb: use xdp_do_flush Date: Wed, 7 Oct 2020 17:25:05 +0200 Message-Id: <20201007152506.66217-7-sven.auhagen@voleatech.de> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20201007152506.66217-1-sven.auhagen@voleatech.de> References: <20201007152506.66217-1-sven.auhagen@voleatech.de> X-Originating-IP: [109.193.235.168] X-ClientProxiedBy: AM0PR05CA0077.eurprd05.prod.outlook.com (2603:10a6:208:136::17) To AM8PR05MB7251.eurprd05.prod.outlook.com (2603:10a6:20b:1d4::23) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from svensmacbookair.sven.lan (109.193.235.168) by AM0PR05CA0077.eurprd05.prod.outlook.com (2603:10a6:208:136::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3455.21 via Frontend Transport; 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Signed-off-by: Sven Auhagen Reviewed-by: Maciej Fijalkowski --- drivers/net/ethernet/intel/igb/igb_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index f34faf24190a..6a2828b96eef 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -8759,7 +8759,7 @@ static int igb_clean_rx_irq(struct igb_q_vector *q_vector, const int budget) rx_ring->skb = skb; if (xdp_xmit & IGB_XDP_REDIR) - xdp_do_flush_map(); + xdp_do_flush(); if (xdp_xmit & IGB_XDP_TX) { struct igb_ring *tx_ring = igb_xdp_tx_queue_mapping(adapter); From patchwork Wed Oct 7 15:25:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sven Auhagen X-Patchwork-Id: 1378063 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; 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Wed, 7 Oct 2020 15:25:20 +0000 From: sven.auhagen@voleatech.de To: anthony.l.nguyen@intel.com, maciej.fijalkowski@intel.com Cc: davem@davemloft.net, netdev@vger.kernel.org, nhorman@redhat.com, sassmann@redhat.com, sandeep.penigalapati@intel.com, brouer@redhat.com Subject: [PATCH 7/7] igb: avoid transmit queue timeout in xdp path Date: Wed, 7 Oct 2020 17:25:06 +0200 Message-Id: <20201007152506.66217-8-sven.auhagen@voleatech.de> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20201007152506.66217-1-sven.auhagen@voleatech.de> References: <20201007152506.66217-1-sven.auhagen@voleatech.de> X-Originating-IP: [109.193.235.168] X-ClientProxiedBy: AM0PR05CA0077.eurprd05.prod.outlook.com (2603:10a6:208:136::17) To AM8PR05MB7251.eurprd05.prod.outlook.com (2603:10a6:20b:1d4::23) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from svensmacbookair.sven.lan (109.193.235.168) by AM0PR05CA0077.eurprd05.prod.outlook.com (2603:10a6:208:136::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3455.21 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: voleatech.de X-MS-Exchange-CrossTenant-Network-Message-Id: 9d7d8398-181b-48b0-63ed-08d86ad53390 X-MS-Exchange-CrossTenant-AuthSource: AM8PR05MB7251.eurprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Oct 2020 15:25:20.0784 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: b82a99f6-7981-4a72-9534-4d35298f847b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: n7DInmPGWGrt6hvuW7+pXe8aUfUpb4xebFpXa+/GXeTtxC3pQtvP+trOnH9xuRe6AzKSoOO/OK8AognpSwjd7t1Z/rYLKrkERU3a7pSSR0I= X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR05MB6082 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Sven Auhagen Since we share the transmit queue with the slow path, it is possible that we run into a transmit queue timeout. This will reset the queue. This happens under high load when the fast path is using the transmit queue pretty much exclusively. Signed-off-by: Sven Auhagen --- drivers/net/ethernet/intel/igb/igb_main.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 6a2828b96eef..d84a99359e95 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -2916,6 +2916,8 @@ static int igb_xdp_xmit_back(struct igb_adapter *adapter, struct xdp_buff *xdp) nq = txring_txq(tx_ring); __netif_tx_lock(nq, cpu); + /* Avoid transmit queue timeout since we share it with the slow path */ + nq->trans_start = jiffies; ret = igb_xmit_xdp_ring(adapter, tx_ring, xdpf); __netif_tx_unlock(nq); @@ -2948,6 +2950,9 @@ static int igb_xdp_xmit(struct net_device *dev, int n, nq = txring_txq(tx_ring); __netif_tx_lock(nq, cpu); + /* Avoid transmit queue timeout since we share it with the slow path */ + nq->trans_start = jiffies; + for (i = 0; i < n; i++) { struct xdp_frame *xdpf = frames[i]; int err;