ethdev: add GTP extension header to flow API

- RTE_FLOW_ITEM_TYPE_GTP_PSC: matches a GTP
- RTE_FLOW_ITEM_TYPE_GTP_PSC: matches a GTP
  PDU extension header (PDU session container).

Signed-off-by: Ying A Wang <ying.a.wang@intel.com>
Acked-by: Ori Kam <orika@mellanox.com>
Reviewed-by: Qi Zhang <qi.z.zhang@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c
index 932bdb9..cdaabcc 100644 (file)
--- a/app/test-pmd/cmdline_flow.c
+++ b/app/test-pmd/cmdline_flow.c
@@ -196,6 +196,9 @@ enum index {
        ITEM_META_DATA,
        ITEM_GRE_KEY,
        ITEM_GRE_KEY_VALUE,
+       ITEM_GTP_PSC,
+       ITEM_GTP_PSC_QFI,
+       ITEM_GTP_PSC_PDU_T,
 
        /* Validate/create actions. */
        ACTIONS,
@@ -663,6 +666,7 @@ static const enum index next_item[] = {
        ITEM_ICMP6_ND_OPT_TLA_ETH,
        ITEM_META,
        ITEM_GRE_KEY,
+       ITEM_GTP_PSC,
        END_SET,
        ZERO,
 };
@@ -902,6 +906,13 @@ static const enum index item_meta[] = {
        ZERO,
 };
 
+static const enum index item_gtp_psc[] = {
+       ITEM_GTP_PSC_QFI,
+       ITEM_GTP_PSC_PDU_T,
+       ITEM_NEXT,
+       ZERO,
+};
+
 static const enum index next_action[] = {
        ACTION_END,
        ACTION_VOID,
@@ -2331,6 +2342,28 @@ static const struct token token_list[] = {
                .next = NEXT(item_gre_key, NEXT_ENTRY(UNSIGNED), item_param),
                .args = ARGS(ARG_ENTRY_HTON(rte_be32_t)),
        },
+       [ITEM_GTP_PSC] = {
+               .name = "gtp_psc",
+               .help = "match GTP extension header with type 0x85",
+               .priv = PRIV_ITEM(GTP_PSC,
+                               sizeof(struct rte_flow_item_gtp_psc)),
+               .next = NEXT(item_gtp_psc),
+               .call = parse_vc,
+       },
+       [ITEM_GTP_PSC_QFI] = {
+               .name = "qfi",
+               .help = "QoS flow identifier",
+               .next = NEXT(item_gtp_psc, NEXT_ENTRY(UNSIGNED), item_param),
+               .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_gtp_psc,
+                                       qfi)),
+       },
+       [ITEM_GTP_PSC_PDU_T] = {
+               .name = "pdu_t",
+               .help = "PDU type",
+               .next = NEXT(item_gtp_psc, NEXT_ENTRY(UNSIGNED), item_param),
+               .args = ARGS(ARGS_ENTRY_HTON(struct rte_flow_item_gtp_psc,
+                                       pdu_type)),
+       },
 
        /* Validate/create actions. */
        [ACTIONS] = {
@@ -5760,6 +5793,9 @@ flow_item_default_mask(const struct rte_flow_item *item)
        case RTE_FLOW_ITEM_TYPE_ESP:
                mask = &rte_flow_item_esp_mask;
                break;
+       case RTE_FLOW_ITEM_TYPE_GTP_PSC:
+               mask = &rte_flow_item_gtp_psc_mask;
+               break;
        default:
                break;
        }

diff --git a/doc/guides/prog_guide/rte_flow.rst b/doc/guides/prog_guide/rte_flow.rst
index 821b524..7521a1e 100644 (file)
--- a/doc/guides/prog_guide/rte_flow.rst
+++ b/doc/guides/prog_guide/rte_flow.rst
@@ -1205,6 +1205,15 @@ Matches an application specific 32 bit metadata item.
 
 - Default ``mask`` matches the specified metadata value.
 
+Item: ``GTP_PSC``
+^^^^^^^^^^^^^^^^^
+
+Matches a GTP PDU extension header with type 0x85.
+
+- ``pdu_type``: PDU type.
+- ``qfi``: QoS flow identifier.
+- Default ``mask`` matches QFI only.
+
 .. _table_rte_flow_item_meta:
 
 .. table:: META

diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
index cba5ba1..0d31538 100644 (file)
--- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
+++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
@@ -3887,6 +3887,11 @@ This section lists supported pattern items and their attributes, if any.
 
   - ``data {unsigned}``: metadata value.
 
+- ``gtp_psc``: match GTP PDU extension header with type 0x85.
+
+  - ``pdu_type {unsigned}``: PDU type.
+  - ``qfi {unsigned}``: QoS flow identifier.
+
 Actions list
 ^^^^^^^^^^^^
 

diff --git a/lib/librte_ethdev/rte_flow.c b/lib/librte_ethdev/rte_flow.c
index 18fcb01..fb25219 100644 (file)
--- a/lib/librte_ethdev/rte_flow.c
+++ b/lib/librte_ethdev/rte_flow.c
@@ -75,6 +75,7 @@ static const struct rte_flow_desc_data rte_flow_desc_item[] = {
        MK_FLOW_ITEM(MARK, sizeof(struct rte_flow_item_mark)),
        MK_FLOW_ITEM(META, sizeof(struct rte_flow_item_meta)),
        MK_FLOW_ITEM(GRE_KEY, sizeof(rte_be32_t)),
+       MK_FLOW_ITEM(GTP_PSC, sizeof(struct rte_flow_item_gtp_psc)),
 };
 
 /** Generate flow_action[] entry. */

diff --git a/lib/librte_ethdev/rte_flow.h b/lib/librte_ethdev/rte_flow.h
index 354cb1d..eab87a5 100644 (file)
--- a/lib/librte_ethdev/rte_flow.h
+++ b/lib/librte_ethdev/rte_flow.h
@@ -434,6 +434,15 @@ enum rte_flow_item_type {
         * @code rte_be32_t * @endcode
         */
        RTE_FLOW_ITEM_TYPE_GRE_KEY,
+
+       /**
+        * Matches a GTP extension header: PDU session container.
+        *
+        * Configure flow for GTP packets with extension header type 0x85.
+        *
+        * See struct rte_flow_item_gtp_psc.
+        */
+       RTE_FLOW_ITEM_TYPE_GTP_PSC,
 };
 
 /**
@@ -1192,6 +1201,24 @@ static const struct rte_flow_item_meta rte_flow_item_meta_mask = {
 };
 #endif
 
+/**
+ * RTE_FLOW_ITEM_TYPE_GTP_PSC.
+ *
+ * Matches a GTP PDU extension header with type 0x85.
+ */
+struct rte_flow_item_gtp_psc {
+       uint8_t pdu_type; /**< PDU type. */
+       uint8_t qfi; /**< QoS flow identifier. */
+};
+
+/** Default mask for RTE_FLOW_ITEM_TYPE_GTP_PSC. */
+#ifndef __cplusplus
+static const struct rte_flow_item_gtp_psc
+rte_flow_item_gtp_psc_mask = {
+       .qfi = 0x3f,
+};
+#endif
+
 /**
  * @warning
  * @b EXPERIMENTAL: this structure may change without prior notice