net: add extension header for GTP PSC

Define new rte header for GTP PDU session container
based on RFC 38415-g30

Signed-off-by: Raslan Darawsheh <rasland@nvidia.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/lib/net/rte_gtp.h b/lib/net/rte_gtp.h
index 6a6f9b2..9f6deb9 100644 (file)
--- a/lib/net/rte_gtp.h
+++ b/lib/net/rte_gtp.h
@@ -61,6 +61,84 @@ struct rte_gtp_hdr_ext_word {
        uint8_t next_ext;     /**< Next Extension Header Type. */
 }  __rte_packed;
 
+/**
+ * Optional extension for GTP with next_ext set to 0x85
+ * defined based on RFC 38415-g30.
+ */
+__extension__
+struct rte_gtp_psc_generic_hdr {
+       uint8_t ext_hdr_len;    /**< PDU ext hdr len in multiples of 4 bytes */
+#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
+       uint8_t type:4;         /**< PDU type */
+       uint8_t qmp:1;          /**< Qos Monitoring Packet */
+       uint8_t pad:3;          /**< type specific pad bits */
+       uint8_t spare:2;        /**< type specific spare bits */
+       uint8_t qfi:6;          /**< Qos Flow Identifier */
+#else
+       uint8_t qfi:6;          /**< Qos Flow Identifier */
+       uint8_t spare:2;        /**< type specific spare bits */
+       uint8_t pad:3;          /**< type specific pad bits */
+       uint8_t qmp:1;          /**< Qos Monitoring Packet */
+       uint8_t type:4;         /**< PDU type */
+#endif
+       uint8_t data[0];        /**< variable length data fields */
+} __rte_packed;
+
+/**
+ * Optional extension for GTP with next_ext set to 0x85
+ * type0 defined based on RFC 38415-g30
+ */
+__extension__
+struct rte_gtp_psc_type0_hdr {
+       uint8_t ext_hdr_len;    /**< PDU ext hdr len in multiples of 4 bytes */
+#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
+       uint8_t type:4;         /**< PDU type */
+       uint8_t qmp:1;          /**< Qos Monitoring Packet */
+       uint8_t snp:1;          /**< Sequence number presence */
+       uint8_t spare_dl1:2;    /**< spare down link bits */
+       uint8_t ppp:1;          /**< Paging policy presence */
+       uint8_t rqi:1;          /**< Reflective Qos Indicator */
+       uint8_t qfi:6;          /**< Qos Flow Identifier */
+#else
+       uint8_t qfi:6;          /**< Qos Flow Identifier */
+       uint8_t rqi:1;          /**< Reflective Qos Indicator */
+       uint8_t ppp:1;          /**< Paging policy presence */
+       uint8_t spare_dl1:2;    /**< spare down link bits */
+       uint8_t snp:1;          /**< Sequence number presence */
+       uint8_t type:4;         /**< PDU type */
+#endif
+       uint8_t data[0];        /**< variable length data fields */
+} __rte_packed;
+
+/**
+ * Optional extension for GTP with next_ext set to 0x85
+ * type1 defined based on RFC 38415-g30
+ */
+__extension__
+struct rte_gtp_psc_type1_hdr {
+       uint8_t ext_hdr_len;    /**< PDU ext hdr len in multiples of 4 bytes */
+#if RTE_BYTE_ORDER == RTE_BIG_ENDIAN
+       uint8_t type:4;         /**< PDU type */
+       uint8_t qmp:1;          /**< Qos Monitoring Packet */
+       uint8_t dl_delay_ind:1; /**< dl delay result presence */
+       uint8_t ul_delay_ind:1; /**< ul delay result presence */
+       uint8_t snp:1;          /**< Sequence number presence ul */
+       uint8_t n_delay_ind:1;  /**< N3/N9 delay result presence */
+       uint8_t spare_ul2:1;    /**< spare up link bits */
+       uint8_t qfi:6;          /**< Qos Flow Identifier */
+#else
+       uint8_t qfi:6;          /**< Qos Flow Identifier */
+       uint8_t spare_ul2:1;    /**< spare up link bits */
+       uint8_t n_delay_ind:1;  /**< N3/N9 delay result presence */
+       uint8_t snp:1;          /**< Sequence number presence ul */
+       uint8_t ul_delay_ind:1; /**< ul delay result presence */
+       uint8_t dl_delay_ind:1; /**< dl delay result presence */
+       uint8_t qmp:1;          /**< Qos Monitoring Packet */
+       uint8_t type:4;         /**< PDU type */
+#endif
+       uint8_t data[0];        /**< variable length data fields */
+} __rte_packed;
+
 /** GTP header length */
 #define RTE_ETHER_GTP_HLEN \
        (sizeof(struct rte_udp_hdr) + sizeof(struct rte_gtp_hdr))