From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by dpdk.org (Postfix) with ESMTP id 9F18E1F5 for ; Thu, 29 Jan 2015 04:16:18 +0100 (CET) Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga101.fm.intel.com with ESMTP; 28 Jan 2015 19:16:16 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.09,484,1418112000"; d="scan'208";a="519417666" Received: from shvmail01.sh.intel.com ([10.239.29.42]) by orsmga003.jf.intel.com with ESMTP; 28 Jan 2015 19:09:03 -0800 Received: from shecgisg004.sh.intel.com (shecgisg004.sh.intel.com [10.239.29.89]) by shvmail01.sh.intel.com with ESMTP id t0T3GCw5027058; Thu, 29 Jan 2015 11:16:12 +0800 Received: from shecgisg004.sh.intel.com (localhost [127.0.0.1]) by shecgisg004.sh.intel.com (8.13.6/8.13.6/SuSE Linux 0.8) with ESMTP id t0T3GAZ5012684; Thu, 29 Jan 2015 11:16:12 +0800 Received: (from hzhan75@localhost) by shecgisg004.sh.intel.com (8.13.6/8.13.6/Submit) id t0T3GA5A012680; Thu, 29 Jan 2015 11:16:10 +0800 From: Helin Zhang To: dev@dpdk.org Date: Thu, 29 Jan 2015 11:15:49 +0800 Message-Id: <1422501365-12643-2-git-send-email-helin.zhang@intel.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1422501365-12643-1-git-send-email-helin.zhang@intel.com> References: <1421637666-16872-1-git-send-email-helin.zhang@intel.com> <1422501365-12643-1-git-send-email-helin.zhang@intel.com> Subject: [dpdk-dev] [PATCH 01/17] mbuf: add definitions of unified packet types X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Jan 2015 03:16:20 -0000 As there are only 6 bit flags in ol_flags for indicating packet types, which is not enough to describe all the possible packet types hardware can recognize. For example, i40e hardware can recognize more than 150 packet types. Unified packet type is composed of tunnel type, L3 type, L4 type and inner L3 type fields, and can be stored in 16 bits mbuf field of 'packet_type'. Signed-off-by: Helin Zhang Signed-off-by: Cunming Liang Signed-off-by: Jijiang Liu --- lib/librte_mbuf/rte_mbuf.h | 74 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h index 16059c6..94ae344 100644 --- a/lib/librte_mbuf/rte_mbuf.h +++ b/lib/librte_mbuf/rte_mbuf.h @@ -165,6 +165,80 @@ extern "C" { /* Use final bit of flags to indicate a control mbuf */ #define CTRL_MBUF_FLAG (1ULL << 63) /**< Mbuf contains control data */ +/* + * Sixteen bits are divided into several fields to mark packet types. Note that + * each field is indexical. + * - Bit 3:0 is for tunnel types. + * - Bit 7:4 is for L3 or outer L3 (for tunneling case) types. + * - Bit 10:8 is for L4 types. It can also be used for inner L4 types for + * tunneling packets. + * - Bit 13:11 is for inner L3 types. + * - Bit 15:14 is reserved. + * + * To be compitable with Vector PMD, RTE_PTYPE_L3_IPV4, RTE_PTYPE_L3_IPV4_EXT, + * RTE_PTYPE_L3_IPV6, RTE_PTYPE_L3_IPV6_EXT, RTE_PTYPE_L4_TCP, RTE_PTYPE_L4_UDP + * and RTE_PTYPE_L4_SCTP should be kept as below in a contiguous 7 bits. + * + * Note that L3 types values are selected for checking IPV4/IPV6 header from + * performance point of view. Reading annotations of RTE_ETH_IS_IPV4_HDR and + * RTE_ETH_IS_IPV6_HDR is needed for any future changes of L3 type values. + */ +#define RTE_PTYPE_UNKNOWN 0x0000 /* 0b0000000000000000 */ +/* bit 3:0 for tunnel types */ +#define RTE_PTYPE_TUNNEL_IP 0x0001 /* 0b0000000000000001 */ +#define RTE_PTYPE_TUNNEL_TCP 0x0002 /* 0b0000000000000010 */ +#define RTE_PTYPE_TUNNEL_UDP 0x0003 /* 0b0000000000000011 */ +#define RTE_PTYPE_TUNNEL_GRE 0x0004 /* 0b0000000000000100 */ +#define RTE_PTYPE_TUNNEL_VXLAN 0x0005 /* 0b0000000000000101 */ +#define RTE_PTYPE_TUNNEL_NVGRE 0x0006 /* 0b0000000000000110 */ +#define RTE_PTYPE_TUNNEL_GENEVE 0x0007 /* 0b0000000000000111 */ +#define RTE_PTYPE_TUNNEL_GRENAT 0x0008 /* 0b0000000000001000 */ +#define RTE_PTYPE_TUNNEL_GRENAT_MAC 0x0009 /* 0b0000000000001001 */ +#define RTE_PTYPE_TUNNEL_GRENAT_MACVLAN 0x000a /* 0b0000000000001010 */ +#define RTE_PTYPE_TUNNEL_MASK 0x000f /* 0b0000000000001111 */ +/* bit 7:4 for L3 types */ +#define RTE_PTYPE_L3_IPV4 0x0010 /* 0b0000000000010000 */ +#define RTE_PTYPE_L3_IPV4_EXT 0x0030 /* 0b0000000000110000 */ +#define RTE_PTYPE_L3_IPV6 0x0040 /* 0b0000000001000000 */ +#define RTE_PTYPE_L3_IPV4_EXT_UNKNOWN 0x0090 /* 0b0000000010010000 */ +#define RTE_PTYPE_L3_IPV6_EXT 0x00c0 /* 0b0000000011000000 */ +#define RTE_PTYPE_L3_IPV6_EXT_UNKNOWN 0x00e0 /* 0b0000000011100000 */ +#define RTE_PTYPE_L3_MASK 0x00f0 /* 0b0000000011110000 */ +/* bit 10:8 for L4 types */ +#define RTE_PTYPE_L4_TCP 0x0100 /* 0b0000000100000000 */ +#define RTE_PTYPE_L4_UDP 0x0200 /* 0b0000001000000000 */ +#define RTE_PTYPE_L4_FRAG 0x0300 /* 0b0000001100000000 */ +#define RTE_PTYPE_L4_SCTP 0x0400 /* 0b0000010000000000 */ +#define RTE_PTYPE_L4_ICMP 0x0500 /* 0b0000010100000000 */ +#define RTE_PTYPE_L4_NONFRAG 0x0600 /* 0b0000011000000000 */ +#define RTE_PTYPE_L4_MASK 0x0700 /* 0b0000011100000000 */ +/* bit 13:11 for inner L3 types */ +#define RTE_PTYPE_INNER_L3_IPV4 0x0800 /* 0b0000100000000000 */ +#define RTE_PTYPE_INNER_L3_IPV4_EXT 0x1000 /* 0b0001000000000000 */ +#define RTE_PTYPE_INNER_L3_IPV6 0x1800 /* 0b0001100000000000 */ +#define RTE_PTYPE_INNER_L3_IPV6_EXT 0x2000 /* 0b0010000000000000 */ +#define RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN 0x2800 /* 0b0010100000000000 */ +#define RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN 0x3000 /* 0b0011000000000000 */ +#define RTE_PTYPE_INNER_L3_MASK 0x3800 /* 0b0011100000000000 */ +/* bit 15:14 reserved */ + +/** + * Check if the (outer) L3 header is IPv4. To avoid comparing IPv4 types one by + * one, bit 4 is selected to be used for IPv4 only. Then checking bit 4 can + * determin if it is an IPV4 packet. + */ +#define RTE_ETH_IS_IPV4_HDR(ptype) ((ptype) & RTE_PTYPE_L3_IPV4) + +/** + * Check if the (outer) L3 header is IPv4. To avoid comparing IPv4 types one by + * one, bit 6 is selected to be used for IPv4 only. Then checking bit 6 can + * determin if it is an IPV4 packet. + */ +#define RTE_ETH_IS_IPV6_HDR(ptype) ((ptype) & RTE_PTYPE_L3_IPV6) + +/* Check if it is a tunneling packet */ +#define RTE_ETH_IS_TUNNEL_PKT(ptype) ((ptype) & RTE_PTYPE_TUNNEL_MASK) + /** * Get the name of a RX offload flag * -- 1.8.1.4