[dpdk-dev] [PATCH v2 1/6] ethdev: update GTP headers
From: Shiri Kuzin <hidden>
Date: 2021-01-11 18:22:11
Subsystem:
library code, the rest · Maintainers:
Andrew Morton, Linus Torvalds
From: Viacheslav Ovsiienko <redacted> 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 <redacted> Acked-by: Ori Kam <redacted> --- 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))
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2.21.0