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From: Jijiang Liu <jijiang.liu@intel.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v4 1/3] mbuf:redefine three TX ol_flags
Date: Tue,  2 Dec 2014 14:52:50 +0800
Message-ID: <1417503172-18642-2-git-send-email-jijiang.liu@intel.com> (raw)
In-Reply-To: <1417503172-18642-1-git-send-email-jijiang.liu@intel.com>

The reason of redefining the PKT_TX_IPV4 and the PKT_TX_IPV6 is listed below,
It will avoid to send a packet with a bad info:
  - we receive a Ether/IP6/IP4/L4/data packet
  - the driver sets PKT_RX_IPV6_HDR
  - the stack decapsulates IP6
  - the stack sends the packet, it has the PKT_TX_IPV6 flag but it's an IPv4 packet.

Signed-off-by: Jijiang Liu <jijiang.liu@intel.com>
---
 lib/librte_mbuf/rte_mbuf.h |   10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
index 2e5fce5..cbadf8e 100644
--- a/lib/librte_mbuf/rte_mbuf.h
+++ b/lib/librte_mbuf/rte_mbuf.h
@@ -141,13 +141,13 @@ extern "C" {
 #define PKT_TX_IP_CKSUM      (1ULL << 54) /**< IP cksum of TX pkt. computed by NIC. */
 #define PKT_TX_IPV4_CSUM     PKT_TX_IP_CKSUM /**< Alias of PKT_TX_IP_CKSUM. */
 
-/** Tell the NIC it's an IPv4 packet. Required for L4 checksum offload or TSO. */
-#define PKT_TX_IPV4          PKT_RX_IPV4_HDR
+/** Packet is IPv4 without requiring IP checksum offload. */
+#define PKT_TX_IPV4          (1ULL << 55)
 
-/** Tell the NIC it's an IPv6 packet. Required for L4 checksum offload or TSO. */
-#define PKT_TX_IPV6          PKT_RX_IPV6_HDR
+/** Tell the NIC it's an IPv6 packet.*/
+#define PKT_TX_IPV6          (1ULL << 56)
 
-#define PKT_TX_VLAN_PKT      (1ULL << 55) /**< TX packet is a 802.1q VLAN packet. */
+#define PKT_TX_VLAN_PKT      (1ULL << 57) /**< TX packet is a 802.1q VLAN packet. */
 
 /* Use final bit of flags to indicate a control mbuf */
 #define CTRL_MBUF_FLAG       (1ULL << 63) /**< Mbuf contains control data */
-- 
1.7.7.6

  reply	other threads:[~2014-12-02  6:53 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-02  6:52 [dpdk-dev] [PATCH v4 0/3] i40e VXLAN TX checksum rework Jijiang Liu
2014-12-02  6:52 ` Jijiang Liu [this message]
2014-12-02  6:52 ` [dpdk-dev] [PATCH v4 2/3] mbuf:add three TX ol_flags and repalce PKT_TX_VXLAN_CKSUM Jijiang Liu
2014-12-02  6:52 ` [dpdk-dev] [PATCH v4 3/3] mbuf:replace the inner_l2_len and the inner_l3_len fields Jijiang Liu
2014-12-02 14:53   ` didier.pallard
2014-12-02 15:36     ` Ananyev, Konstantin
2014-12-03  8:57       ` Olivier MATZ
2014-12-03 11:11         ` Ananyev, Konstantin
2014-12-03 11:27           ` Olivier MATZ

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