net/octeontx2: support GRE key parsing

Adding support to parse GRE KEY for octeontx2 Flow.
Matching on GRE Key will only work, if checksum and routing
bits in the GRE header are equal to 0.

Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>

diff --git a/doc/guides/nics/octeontx2.rst b/doc/guides/nics/octeontx2.rst
index 5f511fe..9a76567 100644 (file)
--- a/doc/guides/nics/octeontx2.rst
+++ b/doc/guides/nics/octeontx2.rst
@@ -268,6 +268,13 @@ Patterns:
    +----+--------------------------------+
    | 22 | RTE_FLOW_ITEM_TYPE_ANY         |
    +----+--------------------------------+
+   | 23 | RTE_FLOW_ITEM_TYPE_GRE_KEY     |
+   +----+--------------------------------+
+
+.. note::
+
+   ``RTE_FLOW_ITEM_TYPE_GRE_KEY`` works only when checksum and routing
+   bits in the GRE header are equal to 0.
 
 Actions:
 

diff --git a/drivers/net/octeontx2/otx2_flow_parse.c b/drivers/net/octeontx2/otx2_flow_parse.c
index 6e65db8..6670c1a 100644 (file)
--- a/drivers/net/octeontx2/otx2_flow_parse.c
+++ b/drivers/net/octeontx2/otx2_flow_parse.c
@@ -389,6 +389,7 @@ int
 otx2_flow_parse_ld(struct otx2_parse_state *pst)
 {
        char hw_mask[NPC_MAX_EXTRACT_DATA_LEN];
+       uint32_t gre_key_mask = 0xffffffff;
        struct otx2_flow_item_info info;
        int lid, lt, lflags;
        int rc;
@@ -450,6 +451,12 @@ otx2_flow_parse_ld(struct otx2_parse_state *pst)
                info.def_mask = &rte_flow_item_gre_mask;
                info.len = sizeof(struct rte_flow_item_gre);
                break;
+       case RTE_FLOW_ITEM_TYPE_GRE_KEY:
+               lt = NPC_LT_LD_GRE;
+               info.def_mask = &gre_key_mask;
+               info.len = sizeof(gre_key_mask);
+               info.hw_hdr_len = 4;
+               break;
        case RTE_FLOW_ITEM_TYPE_NVGRE:
                lt = NPC_LT_LD_GRE;
                lflags = NPC_F_GRE_NVGRE;