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From: "Buckley, Daniel M" <daniel.m.buckley@intel.com>
To: "dev@dpdk.org" <dev@dpdk.org>, "Jiang, YuX" <yux.jiang@intel.com>
Subject: [PATCH 2/2] net/iavf: support inner and outer checksum offload
Date: Fri, 26 Aug 2022 14:46:29 +0000	[thread overview]
Message-ID: <BL3PR11MB6435B442908300083188DB45C6759@BL3PR11MB6435.namprd11.prod.outlook.com> (raw)

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From: peng1x.zhang@intel.com
To: dev@dpdk.org
Cc: beilei.xing@intel.com, jingjing.wu@intel.com,
 Peng Zhang <peng1x.zhang@intel.com>
Subject: [PATCH 2/2] net/iavf: support inner and outer checksum offload
Date: Sat, 13 Aug 2022 00:52:23 +0800
Message-Id: <20220812165223.470777-2-peng1x.zhang@intel.com>
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From: Peng Zhang <peng1x.zhang@intel.com>

Add the support of inner and outer Tx checksum offload for tunneling
packets by configuring tunneling parameters in Tx descriptors,
including outer L3/L4 checksum offload.

Signed-off-by: Peng Zhang <peng1x.zhang@intel.com>
---
Tested-by: Daniel M Buckley <daniel.m.buckley@intel.con>
---
 drivers/net/iavf/iavf_ethdev.c |  3 +-
 drivers/net/iavf/iavf_rxtx.c   | 51 +++++++++++++++++++++++++++++++---
 drivers/net/iavf/iavf_rxtx.h   |  8 +++++-
 3 files changed, 56 insertions(+), 6 deletions(-)

diff --git a/drivers/net/iavf/iavf_ethdev.c b/drivers/net/iavf/iavf_ethdev.c
index 506fcff6e3..59238ecceb 100644
--- a/drivers/net/iavf/iavf_ethdev.c
+++ b/drivers/net/iavf/iavf_ethdev.c
@@ -1140,7 +1140,8 @@ iavf_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
            RTE_ETH_TX_OFFLOAD_IPIP_TNL_TSO |
            RTE_ETH_TX_OFFLOAD_GENEVE_TNL_TSO |
            RTE_ETH_TX_OFFLOAD_MULTI_SEGS |
-           RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
+           RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE |
+           RTE_ETH_TX_OFFLOAD_OUTER_UDP_CKSUM;

      if (vf->vf_res->vf_cap_flags & VIRTCHNL_VF_OFFLOAD_CRC)
            dev_info->rx_offload_capa |= RTE_ETH_RX_OFFLOAD_KEEP_CRC;
diff --git a/drivers/net/iavf/iavf_rxtx.c b/drivers/net/iavf/iavf_rxtx.c
index adec58e90a..7cbebafc09 100644
--- a/drivers/net/iavf/iavf_rxtx.c
+++ b/drivers/net/iavf/iavf_rxtx.c
@@ -2334,7 +2334,7 @@ static inline uint16_t
 iavf_calc_context_desc(uint64_t flags, uint8_t vlan_flag)
 {
      if (flags & (RTE_MBUF_F_TX_TCP_SEG | RTE_MBUF_F_TX_UDP_SEG |
-                 RTE_MBUF_F_TX_TUNNEL_MASK))
+         RTE_MBUF_F_TX_TUNNEL_MASK | RTE_MBUF_F_TX_OUTER_IP_CKSUM))
            return 1;
      if (flags & RTE_MBUF_F_TX_VLAN &&
          vlan_flag & IAVF_TX_FLAGS_VLAN_TAG_LOC_L2TAG2)
@@ -2399,6 +2399,44 @@ iavf_fill_ctx_desc_tunnelling_field(volatile uint64_t *qw0,
      break;
      }

+     /* L4TUNT: L4 Tunneling Type */
+     switch (m->ol_flags & RTE_MBUF_F_TX_TUNNEL_MASK) {
+     case RTE_MBUF_F_TX_TUNNEL_IPIP:
+           /* for non UDP / GRE tunneling, set to 00b */
+           break;
+     case RTE_MBUF_F_TX_TUNNEL_VXLAN:
+     case RTE_MBUF_F_TX_TUNNEL_GTP:
+     case RTE_MBUF_F_TX_TUNNEL_GENEVE:
+           eip_typ |= IAVF_TXD_CTX_UDP_TUNNELING;
+           break;
+     case RTE_MBUF_F_TX_TUNNEL_GRE:
+           eip_typ |= IAVF_TXD_CTX_GRE_TUNNELING;
+           break;
+     default:
+           PMD_TX_LOG(ERR, "Tunnel type not supported");
+           return;
+     }
+
+     /* L4TUNLEN: L4 Tunneling Length, in Words
+      *
+      * We depend on app to set rte_mbuf.l2_len correctly.
+      * For IP in GRE it should be set to the length of the GRE
+      * header;
+      * For MAC in GRE or MAC in UDP it should be set to the length
+      * of the GRE or UDP headers plus the inner MAC up to including
+      * its last Ethertype.
+      * If MPLS labels exists, it should include them as well.
+      */
+     eip_typ |= (m->l2_len >> 1) << IAVF_TXD_CTX_QW0_NATLEN_SHIFT;
+
+     /**
+      * Calculate the tunneling UDP checksum.
+      * Shall be set only if L4TUNT = 01b and EIPT is not zero
+      */
+     if (!(eip_typ & IAVF_TX_CTX_EXT_IP_NONE) &&
+         (eip_typ & IAVF_TXD_CTX_UDP_TUNNELING))
+           eip_typ |= IAVF_TXD_CTX_QW0_L4T_CS_MASK;
+
      *qw0 = eip_typ << IAVF_TXD_CTX_QW0_TUN_PARAMS_EIPT_SHIFT |
            eip_len << IAVF_TXD_CTX_QW0_TUN_PARAMS_EIPLEN_SHIFT |
            eip_noinc << IAVF_TXD_CTX_QW0_TUN_PARAMS_EIP_NOINC_SHIFT;
@@ -2417,7 +2455,7 @@ iavf_fill_ctx_desc_segmentation_field(volatile uint64_t *field,
            total_length = m->pkt_len - (m->l2_len + m->l3_len + m->l4_len);

            if (m->ol_flags & RTE_MBUF_F_TX_TUNNEL_MASK)
-                 total_length -= m->outer_l3_len;
+                 total_length -= m->outer_l3_len +  m->outer_l2_len;
      }

 #ifdef RTE_LIBRTE_IAVF_DEBUG_TX
@@ -2535,8 +2573,13 @@ iavf_build_data_desc_cmd_offset_fields(volatile uint64_t *qw1,
      }

      /* Set MACLEN */
-     offset |= (m->l2_len >> 1) << IAVF_TX_DESC_LENGTH_MACLEN_SHIFT;
-
+     if (m->ol_flags & RTE_MBUF_F_TX_TUNNEL_MASK)
+           offset |= (m->outer_l2_len >> 1)
+                 << IAVF_TX_DESC_LENGTH_MACLEN_SHIFT;
+     else
+           offset |= (m->l2_len >> 1)
+                 << IAVF_TX_DESC_LENGTH_MACLEN_SHIFT;
+
      /* Enable L3 checksum offloading inner */
      if (m->ol_flags & RTE_MBUF_F_TX_IP_CKSUM) {
            if (m->ol_flags & RTE_MBUF_F_TX_IPV4) {
diff --git a/drivers/net/iavf/iavf_rxtx.h b/drivers/net/iavf/iavf_rxtx.h
index 1695e43cd5..4b40ad3615 100644
--- a/drivers/net/iavf/iavf_rxtx.h
+++ b/drivers/net/iavf/iavf_rxtx.h
@@ -26,6 +26,8 @@
 #define IAVF_TX_NO_VECTOR_FLAGS (                     \
            RTE_ETH_TX_OFFLOAD_MULTI_SEGS |            \
            RTE_ETH_TX_OFFLOAD_TCP_TSO |         \
+           RTE_ETH_TX_OFFLOAD_OUTER_IPV4_CKSUM |    \
+           RTE_ETH_TX_OFFLOAD_OUTER_UDP_CKSUM |      \
            RTE_ETH_TX_OFFLOAD_SECURITY)

 #define IAVF_TX_VECTOR_OFFLOAD (                      \
@@ -56,7 +58,8 @@
 #define IAVF_TX_CKSUM_OFFLOAD_MASK (            \
            RTE_MBUF_F_TX_IP_CKSUM |             \
            RTE_MBUF_F_TX_L4_MASK |        \
-           RTE_MBUF_F_TX_TCP_SEG)
+           RTE_MBUF_F_TX_TCP_SEG |          \
+           RTE_MBUF_F_TX_OUTER_IP_CKSUM)

 #define IAVF_TX_OFFLOAD_MASK (  \
            RTE_MBUF_F_TX_OUTER_IPV6 |           \
@@ -67,6 +70,9 @@
            RTE_MBUF_F_TX_IP_CKSUM |             \
            RTE_MBUF_F_TX_L4_MASK |        \
            RTE_MBUF_F_TX_TCP_SEG |        \
+           RTE_MBUF_F_TX_TUNNEL_MASK |   \
+           RTE_MBUF_F_TX_OUTER_IP_CKSUM |  \
+           RTE_MBUF_F_TX_OUTER_UDP_CKSUM | \
            RTE_ETH_TX_OFFLOAD_SECURITY)

 #define IAVF_TX_OFFLOAD_NOTSUP_MASK \

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             reply	other threads:[~2022-08-29  7:02 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-08-26 14:46 Buckley, Daniel M [this message]
  -- strict thread matches above, loose matches on Subject: below --
2022-08-30  2:22 Xu, Ke1
2022-08-12 16:52 [PATCH 1/2] net/iavf: enable TSO offloading for tunnel cases peng1x.zhang
2022-08-12 16:52 ` [PATCH 2/2] net/iavf: support inner and outer checksum offload peng1x.zhang
2022-08-30  8:12   ` Yang, Qiming

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