[dpdk-dev] [PATCH v2] net/i40e: fix IPv6 fragment RSS offload type in flow

[Alvin Zhang]

To keep flow format uniform with ice, this patch adds support for
this RSS rule:
    flow create 0 ingress pattern eth / ipv6 / ipv6_frag_ext / end \
    actions rss types ipv6-frag end queues end queues end / end

Fixes: ef4c16fd9148 ("net/i40e: refactor RSS flow")
Cc: stable at dpdk.org

Signed-off-by: Alvin Zhang <alvinx.zhang at intel.com>
---

v2: Update the flow pattern, the previous is "eth / ipv6_frag_ext",
    now is "eth / ipv6 / ipv6_frag_ext"
---
 doc/guides/nics/features/i40e.ini |  1 +
 drivers/net/i40e/i40e_hash.c      | 13 ++++++++++++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/doc/guides/nics/features/i40e.ini b/doc/guides/nics/features/i40e.ini
index ccfc5f1..e3a575f 100644
--- a/doc/guides/nics/features/i40e.ini
+++ b/doc/guides/nics/features/i40e.ini
@@ -61,6 +61,7 @@ gtpc                 = Y
 gtpu                 = Y
 ipv4                 = Y
 ipv6                 = Y
+ipv6_frag_ext        = P
 l2tpv3oip            = Y
 mpls                 = Y
 nvgre                = Y
diff --git a/drivers/net/i40e/i40e_hash.c b/drivers/net/i40e/i40e_hash.c
index 6579b1a..5da3d18 100644
--- a/drivers/net/i40e/i40e_hash.c
+++ b/drivers/net/i40e/i40e_hash.c
@@ -28,6 +28,7 @@
 #define I40E_HASH_HDR_ETH		0x01ULL
 #define I40E_HASH_HDR_IPV4		0x10ULL
 #define I40E_HASH_HDR_IPV6		0x20ULL
+#define I40E_HASH_HDR_IPV6_FRAG		0x40ULL
 #define I40E_HASH_HDR_TCP		0x100ULL
 #define I40E_HASH_HDR_UDP		0x200ULL
 #define I40E_HASH_HDR_SCTP		0x400ULL
@@ -54,6 +55,8 @@
 
 /* IPv6 */
 #define I40E_PHINT_IPV6			(I40E_HASH_HDR_ETH | I40E_HASH_HDR_IPV6)
+#define I40E_PHINT_IPV6_FRAG		(I40E_PHINT_IPV6 | \
+					 I40E_HASH_HDR_IPV6_FRAG)
 #define I40E_PHINT_IPV6_TCP		(I40E_PHINT_IPV6 | I40E_HASH_HDR_TCP)
 #define I40E_PHINT_IPV6_UDP		(I40E_PHINT_IPV6 | I40E_HASH_HDR_UDP)
 #define I40E_PHINT_IPV6_SCTP		(I40E_PHINT_IPV6 | I40E_HASH_HDR_SCTP)
@@ -158,6 +161,9 @@ struct i40e_hash_map_rss_inset {
 					BIT_ULL(RTE_FLOW_ITEM_TYPE_L2TPV3OIP) |\
 					BIT_ULL(RTE_FLOW_ITEM_TYPE_AH))
 
+#define I40E_HASH_IPV6_NEXT_ALLOW	(I40E_HASH_IP_NEXT_ALLOW | \
+					BIT_ULL(RTE_FLOW_ITEM_TYPE_IPV6_FRAG_EXT))
+
 #define I40E_HASH_UDP_NEXT_ALLOW	(BIT_ULL(RTE_FLOW_ITEM_TYPE_GTPU) | \
 					BIT_ULL(RTE_FLOW_ITEM_TYPE_GTPC))
 
@@ -168,7 +174,7 @@ struct i40e_hash_map_rss_inset {
 	[RTE_FLOW_ITEM_TYPE_VOID] = I40E_HASH_VOID_NEXT_ALLOW,
 	[RTE_FLOW_ITEM_TYPE_ETH] = I40E_HASH_ETH_NEXT_ALLOW,
 	[RTE_FLOW_ITEM_TYPE_IPV4] = I40E_HASH_IP_NEXT_ALLOW,
-	[RTE_FLOW_ITEM_TYPE_IPV6] = I40E_HASH_IP_NEXT_ALLOW,
+	[RTE_FLOW_ITEM_TYPE_IPV6] = I40E_HASH_IPV6_NEXT_ALLOW,
 	[RTE_FLOW_ITEM_TYPE_UDP] = I40E_HASH_UDP_NEXT_ALLOW,
 	[RTE_FLOW_ITEM_TYPE_GTPU] = I40E_HASH_GTPU_NEXT_ALLOW,
 };
@@ -177,6 +183,7 @@ struct i40e_hash_map_rss_inset {
 	[RTE_FLOW_ITEM_TYPE_ETH] = I40E_HASH_HDR_ETH,
 	[RTE_FLOW_ITEM_TYPE_IPV4] = I40E_HASH_HDR_IPV4,
 	[RTE_FLOW_ITEM_TYPE_IPV6] = I40E_HASH_HDR_IPV6,
+	[RTE_FLOW_ITEM_TYPE_IPV6_FRAG_EXT] = I40E_HASH_HDR_IPV6_FRAG,
 	[RTE_FLOW_ITEM_TYPE_TCP] = I40E_HASH_HDR_TCP,
 	[RTE_FLOW_ITEM_TYPE_UDP] = I40E_HASH_HDR_UDP,
 	[RTE_FLOW_ITEM_TYPE_SCTP] = I40E_HASH_HDR_SCTP,
@@ -270,6 +277,10 @@ struct i40e_hash_match_pattern {
 			      I40E_HASH_IPV6_L23_RSS_MASK,
 			      I40E_FILTER_PCTYPE_NONF_IPV6_OTHER),
 
+	I40E_HASH_MAP_PATTERN(I40E_PHINT_IPV6_FRAG,
+			      ETH_RSS_FRAG_IPV6 | I40E_HASH_L23_RSS_MASK,
+			      I40E_FILTER_PCTYPE_FRAG_IPV6),
+
 	I40E_HASH_MAP_PATTERN(I40E_PHINT_IPV6_TCP,
 			      ETH_RSS_NONFRAG_IPV6_TCP |
 			      I40E_HASH_IPV6_L234_RSS_MASK,
-- 
1.8.3.1