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From: Shiri Kuzin <shirik@nvidia.com>
To: dev@dpdk.org
Cc: viacheslavo@nvidia.com, adrien.mazarguil@6wind.com, rasland@nvidia.com
Subject: [dpdk-dev] [RFC 1/6] ethdev: update GTP headers
Date: Wed, 16 Dec 2020 16:25:06 +0200
Message-ID: <20201216142511.13660-2-shirik@nvidia.com> (raw)
In-Reply-To: <20201216142511.13660-1-shirik@nvidia.com>

From: Viacheslav Ovsiienko <viacheslavo@nvidia.com>

This patch introduces the GTP header individual flag bit fields
and the header optional word with N-PDU number, Sequence Number
and Next Extension Header type.

Signed-off-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
---
 lib/librte_net/rte_gtp.h | 33 ++++++++++++++++++++++++++++++---
 1 file changed, 30 insertions(+), 3 deletions(-)

diff --git a/lib/librte_net/rte_gtp.h b/lib/librte_net/rte_gtp.h
index 104384cc53..6a6f9b238d 100644
--- a/lib/librte_net/rte_gtp.h
+++ b/lib/librte_net/rte_gtp.h
@@ -27,13 +27,40 @@ extern "C" {
  * 16-bit payload length after mandatory header, 32-bit TEID.
  * No optional fields and next extension header.
  */
+__extension__
 struct rte_gtp_hdr {
-	uint8_t gtp_hdr_info; /**< GTP header info */
+	union {
+		uint8_t gtp_hdr_info; /**< GTP header info */
+		struct {
+#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
+			uint8_t pn:1;   /**< N-PDU Number present bit */
+			uint8_t s:1;    /**< Sequence Number Present bit */
+			uint8_t e:1;    /**< Extension Present bit */
+			uint8_t res1:1; /**< Reserved */
+			uint8_t pt:1;   /**< Protocol Type bit */
+			uint8_t ver:3;  /**< Version Number */
+#elif RTE_BYTE_ORDER == RTE_BIG_ENDIAN
+			uint8_t ver:3;  /**< Version Number */
+			uint8_t pt:1;   /**< Protocol Type bit */
+			uint8_t res1:1; /**< Reserved */
+			uint8_t e:1;    /**< Extension Present bit */
+			uint8_t s:1;    /**< Sequence Number Present bit */
+			uint8_t pn:1;   /**< N-PDU Number present bit */
+#endif
+		};
+	};
 	uint8_t msg_type;     /**< GTP message type */
-	uint16_t plen;        /**< Total payload length */
-	uint32_t teid;        /**< Tunnel endpoint ID */
+	rte_be16_t plen;      /**< Total payload length */
+	rte_be32_t teid;      /**< Tunnel endpoint ID */
 } __rte_packed;
 
+/* Optional word of GTP header, present if any of E, S, PN is set. */
+struct rte_gtp_hdr_ext_word {
+	rte_be16_t sqn;	      /**< Sequence Number. */
+	uint8_t npdu;	      /**< N-PDU number. */
+	uint8_t next_ext;     /**< Next Extension Header Type. */
+}  __rte_packed;
+
 /** GTP header length */
 #define RTE_ETHER_GTP_HLEN \
 	(sizeof(struct rte_udp_hdr) + sizeof(struct rte_gtp_hdr))
-- 
2.21.0


  reply	other threads:[~2020-12-16 14:25 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-03  7:39 [dpdk-dev] [RFC v2] ethdev: introduce GENEVE header extension item Shiri Kuzin
2020-10-01 16:25 ` Ferruh Yigit
2020-10-05 12:44   ` Shiri Kuzin
2020-10-05 13:10     ` Ferruh Yigit
2020-12-16 13:02 ` [dpdk-dev] [RFC v3 0/8] ethdev: introduce GENEVE header TLV option item Shiri Kuzin
2020-12-16 13:02   ` [dpdk-dev] [RFC v3 1/8] lib/librte_ethdev: " Shiri Kuzin
2020-12-16 13:02   ` [dpdk-dev] [RFC v3 2/8] app/testpmd: add GENEVE option item support Shiri Kuzin
2021-01-14 20:08     ` Ajit Khaparde
2021-01-17  8:31       ` Shiri Kuzin
2020-12-16 13:02   ` [dpdk-dev] [RFC v3 3/8] common/mlx5: check GENEVE TLV support in HCA attributes Shiri Kuzin
2020-12-16 13:02   ` [dpdk-dev] [RFC v3 4/8] common/mlx5: create GENEVE TLV option object with DevX Shiri Kuzin
2020-12-16 13:02   ` [dpdk-dev] [RFC v3 5/8] net/mlx5: create GENEVE TLV option management Shiri Kuzin
2020-12-16 13:02   ` [dpdk-dev] [RFC v3 6/8] net/mlx5: add GENEVE TLV option flow validation Shiri Kuzin
2020-12-16 13:02   ` [dpdk-dev] [RFC v3 7/8] net/mlx5: add GENEVE TLV option flow translation Shiri Kuzin
2020-12-16 13:02   ` [dpdk-dev] [RFC v3 8/8] doc: update GENEVE TLV option support Shiri Kuzin
2020-12-16 14:25 ` [dpdk-dev] [RFC 0/6] add GTP PSC extension header support Shiri Kuzin
2020-12-16 14:25   ` Shiri Kuzin [this message]
2020-12-16 14:25   ` [dpdk-dev] [RFC 2/6] app/testpmd: add GTP PSC option support in raw sets Shiri Kuzin
2020-12-16 14:25   ` [dpdk-dev] [RFC 3/6] common/mlx5: add matcher fields for GTP extensions Shiri Kuzin
2020-12-16 14:25   ` [dpdk-dev] [RFC 4/6] net/mlx5: add GTP PSC flow validation Shiri Kuzin
2020-12-16 14:25   ` [dpdk-dev] [RFC 5/6] net/mlx5: add GTP PSC item translation Shiri Kuzin
2020-12-16 14:25   ` [dpdk-dev] [RFC 6/6] doc: update GTP extension header support Shiri Kuzin

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