> -----Original Message-----
> From: Shiri Kuzin <shi...@nvidia.com>
>
> From: Viacheslav Ovsiienko <viachesl...@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 <viachesl...@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
Acked-by: Ori Kam <or...@nvidia.com>
Thanks,
Ori
