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From: Jijiang Liu <jijiang.liu@intel.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v8 09/10] i40e:support VxLAN Tx checksum offload
Date: Mon, 27 Oct 2014 10:13:25 +0800
Message-ID: <1414376006-31402-10-git-send-email-jijiang.liu@intel.com> (raw)
In-Reply-To: <1414376006-31402-1-git-send-email-jijiang.liu@intel.com>

Support VxLAN Tx checksum offload, which include
  - outer L3(IP) checksum offload
  - inner L3(IP) checksum offload
  - inner L4(UDP, TCP and SCTP) checksum offload

Signed-off-by: Jijiang Liu <jijiang.liu@intel.com>
---
 lib/librte_mbuf/rte_mbuf.h      |    1 +
 lib/librte_pmd_i40e/i40e_rxtx.c |   46 +++++++++++++++++++++++++++++++++-----
 2 files changed, 41 insertions(+), 6 deletions(-)

diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index 9af3bd9..a86dedf 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -96,6 +96,7 @@ extern "C" {
 
 #define PKT_TX_VLAN_PKT      (1ULL << 55) /**< TX packet is a 802.1q VLAN packet. */
 #define PKT_TX_IP_CKSUM      (1ULL << 54) /**< IP cksum of TX pkt. computed by NIC. */
+#define PKT_TX_VXLAN_CKSUM   (1ULL << 50) /**< TX checksum of VxLAN computed by NIC */
 #define PKT_TX_IPV4_CSUM     PKT_TX_IP_CKSUM /**< Alias of PKT_TX_IP_CKSUM. */
 #define PKT_TX_IPV4          PKT_RX_IPV4_HDR /**< IPv4 with no IP checksum offload. */
 #define PKT_TX_IPV6          PKT_RX_IPV6_HDR /**< IPv6 packet */
diff --git a/lib/librte_pmd_i40e/i40e_rxtx.c b/lib/librte_pmd_i40e/i40e_rxtx.c
index 2108290..7599df9 100644
--- a/lib/librte_pmd_i40e/i40e_rxtx.c
+++ b/lib/librte_pmd_i40e/i40e_rxtx.c
@@ -411,11 +411,14 @@ i40e_rxd_ptype_to_pkt_flags(uint64_t qword)
 }
 
 static inline void
-i40e_txd_enable_checksum(uint32_t ol_flags,
+i40e_txd_enable_checksum(uint64_t ol_flags,
 			uint32_t *td_cmd,
 			uint32_t *td_offset,
 			uint8_t l2_len,
-			uint8_t l3_len)
+			uint16_t l3_len,
+			uint8_t inner_l2_len,
+			uint16_t inner_l3_len,
+			uint32_t *cd_tunneling)
 {
 	if (!l2_len) {
 		PMD_DRV_LOG(DEBUG, "L2 length set to 0");
@@ -428,6 +431,27 @@ i40e_txd_enable_checksum(uint32_t ol_flags,
 		return;
 	}
 
+	/* VxLAN packet TX checksum offload */
+	if (unlikely(ol_flags & PKT_TX_VXLAN_CKSUM)) {
+		uint8_t l4tun_len;
+
+		l4tun_len = ETHER_VXLAN_HLEN + inner_l2_len;
+
+		if (ol_flags & PKT_TX_IPV4_CSUM)
+			*cd_tunneling |= I40E_TX_CTX_EXT_IP_IPV4;
+		else if (ol_flags & PKT_TX_IPV6)
+			*cd_tunneling |= I40E_TX_CTX_EXT_IP_IPV6;
+
+		/* Now set the ctx descriptor fields */
+		*cd_tunneling |= (l3_len >> 2) <<
+				I40E_TXD_CTX_QW0_EXT_IPLEN_SHIFT |
+				I40E_TXD_CTX_UDP_TUNNELING |
+				(l4tun_len >> 1) <<
+				I40E_TXD_CTX_QW0_NATLEN_SHIFT;
+
+		l3_len = inner_l3_len;
+	}
+
 	/* Enable L3 checksum offloads */
 	if (ol_flags & PKT_TX_IPV4_CSUM) {
 		*td_cmd |= I40E_TX_DESC_CMD_IIPT_IPV4_CSUM;
@@ -1077,7 +1101,10 @@ i40e_recv_scattered_pkts(void *rx_queue,
 static inline uint16_t
 i40e_calc_context_desc(uint64_t flags)
 {
-	uint16_t mask = 0;
+	uint64_t mask = 0ULL;
+
+	if (flags | PKT_TX_VXLAN_CKSUM)
+		mask |= PKT_TX_VXLAN_CKSUM;
 
 #ifdef RTE_LIBRTE_IEEE1588
 	mask |= PKT_TX_IEEE1588_TMST;
@@ -1098,6 +1125,7 @@ i40e_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
 	volatile struct i40e_tx_desc *txr;
 	struct rte_mbuf *tx_pkt;
 	struct rte_mbuf *m_seg;
+	uint32_t cd_tunneling_params;
 	uint16_t tx_id;
 	uint16_t nb_tx;
 	uint32_t td_cmd;
@@ -1106,7 +1134,9 @@ i40e_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
 	uint32_t td_tag;
 	uint64_t ol_flags;
 	uint8_t l2_len;
-	uint8_t l3_len;
+	uint16_t l3_len;
+	uint8_t inner_l2_len;
+	uint16_t inner_l3_len;
 	uint16_t nb_used;
 	uint16_t nb_ctx;
 	uint16_t tx_last;
@@ -1134,7 +1164,9 @@ i40e_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
 
 		ol_flags = tx_pkt->ol_flags;
 		l2_len = tx_pkt->l2_len;
+		inner_l2_len = tx_pkt->inner_l2_len;
 		l3_len = tx_pkt->l3_len;
+		inner_l3_len = tx_pkt->inner_l3_len;
 
 		/* Calculate the number of context descriptors needed. */
 		nb_ctx = i40e_calc_context_desc(ol_flags);
@@ -1182,15 +1214,17 @@ i40e_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
 		td_cmd |= I40E_TX_DESC_CMD_ICRC;
 
 		/* Enable checksum offloading */
+		cd_tunneling_params = 0;
 		i40e_txd_enable_checksum(ol_flags, &td_cmd, &td_offset,
-							l2_len, l3_len);
+						l2_len, l3_len, inner_l2_len,
+						inner_l3_len,
+						&cd_tunneling_params);
 
 		if (unlikely(nb_ctx)) {
 			/* Setup TX context descriptor if required */
 			volatile struct i40e_tx_context_desc *ctx_txd =
 				(volatile struct i40e_tx_context_desc *)\
 							&txr[tx_id];
-			uint32_t cd_tunneling_params = 0;
 			uint16_t cd_l2tag2 = 0;
 			uint64_t cd_type_cmd_tso_mss =
 				I40E_TX_DESC_DTYPE_CONTEXT;
-- 
1.7.7.6

  parent reply	other threads:[~2014-10-27  2:05 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-27  2:13 [dpdk-dev] [PATCH v8 00/10] Support VxLAN on Fortville Jijiang Liu
2014-10-27  2:13 ` [dpdk-dev] [PATCH v8 01/10] librte_mbuf:the rte_mbuf structure changes Jijiang Liu
2014-10-27  2:13 ` [dpdk-dev] [PATCH v8 02/10] librte_ether:add the basic data structures of VxLAN Jijiang Liu
2014-10-27  2:13 ` [dpdk-dev] [PATCH v8 03/10] librte_ether:add VxLAN packet identification API Jijiang Liu
2014-10-27  2:13 ` [dpdk-dev] [PATCH v8 04/10] i40e:support VxLAN packet identification in i40e Jijiang Liu
2014-10-27  2:13 ` [dpdk-dev] [PATCH v8 05/10] app/test-pmd:test VxLAN packet identification Jijiang Liu
2014-10-27  2:13 ` [dpdk-dev] [PATCH v8 06/10] librte_ether:add data structures of VxLAN filter Jijiang Liu
2014-10-27  2:13 ` [dpdk-dev] [PATCH v8 07/10] i40e:implement the API of VxLAN filter in librte_pmd_i40e Jijiang Liu
2014-10-27  2:13 ` [dpdk-dev] [PATCH v8 08/10] app/testpmd:test VxLAN packet filter Jijiang Liu
2014-10-27  2:13 ` Jijiang Liu [this message]
2014-10-27  2:13 ` [dpdk-dev] [PATCH v8 10/10] app/testpmd:test VxLAN Tx checksum offload Jijiang Liu
2014-11-04  8:19   ` Olivier MATZ
2014-11-05  6:02     ` Liu, Jijiang
2014-11-05 10:28       ` Olivier MATZ
2014-11-06 11:24         ` Liu, Jijiang
2014-11-06 13:08           ` Olivier MATZ
2014-11-06 14:27             ` Liu, Jijiang
2014-11-07  0:43         ` Yong Wang
2014-11-07 17:16           ` Olivier MATZ
2014-11-10 11:39             ` Ananyev, Konstantin
2014-11-10 15:57               ` Olivier MATZ
2014-11-12  9:55                 ` Ananyev, Konstantin
2014-11-12 13:05                   ` Olivier MATZ
2014-11-12 13:40                     ` Thomas Monjalon
2014-11-12 23:14                       ` Ananyev, Konstantin
2014-11-12 14:39                     ` Ananyev, Konstantin
2014-11-12 14:56                       ` Olivier MATZ
     [not found]             ` <D0868B54.24DBB%yongwang@vmware.com>
2014-11-11  0:07               ` [dpdk-dev] FW: " Yong Wang
2014-11-10  6:03         ` [dpdk-dev] " Liu, Jijiang
2014-11-10 16:17           ` Olivier MATZ
     [not found]             ` <1ED644BD7E0A5F4091CF203DAFB8E4CC01D8F7A7@SHSMSX101.ccr.corp.intel.com>
2014-11-12 17:26               ` Thomas Monjalon
2014-11-13  5:35                 ` Liu, Jijiang
2014-11-13  5:39                   ` Liu, Jijiang
2014-11-13  6:51                 ` Liu, Jijiang
2014-11-13  9:10                   ` Thomas Monjalon
2014-11-14  8:15                     ` Liu, Jijiang
2014-11-14  9:09                       ` Olivier MATZ
2014-11-17  6:52                         ` Liu, Jijiang
2014-11-17 11:21                           ` Olivier MATZ
2014-11-20  7:28                             ` Liu, Jijiang
2014-11-20 16:36                               ` Olivier MATZ
2014-11-21  5:40                                 ` Liu, Jijiang
2014-10-27  2:20 ` [dpdk-dev] [PATCH v8 00/10] Support VxLAN on Fortville Liu, Yong
2014-10-27  2:41 ` Zhang, Helin
2014-10-27 13:46   ` Thomas Monjalon
2014-10-27 14:34     ` Liu, Jijiang
2014-10-27 15:15       ` Thomas Monjalon

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