From: Beilei Xing <beilei.xing@intel.com>
Date: Thu, 22 Jun 2017 09:30:52 +0000 (+0800)
Subject: net/i40e: fix flow director for IPv6
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=6562269ca61d4f2d282586027404cdf736c0d024;p=dpdk.git

net/i40e: fix flow director for IPv6

After adding a fdir rule for IPv6 with input set TC, IPv6 packets
with the specific TC can't be assigned the right queue.
The root cause is that TC is parsed wrongly, this patch fixes
TC parsing problem.

Fixes: 7d83c152a207 ("net/i40e: parse flow director filter")
Cc: stable@dpdk.org

Signed-off-by: Beilei Xing <beilei.xing@intel.com>
Tested-by: Yuan Peng <yuan.peng@intel.com>
---

diff --git a/drivers/net/i40e/i40e_ethdev.h b/drivers/net/i40e/i40e_ethdev.h
index 183dc172a1..0c5cdb163a 100644
--- a/drivers/net/i40e/i40e_ethdev.h
+++ b/drivers/net/i40e/i40e_ethdev.h
@@ -448,6 +448,7 @@ struct i40e_vmdq_info {
 			I40E_PRTQF_FLX_PIT_DEST_OFF_MASK))
 #define I40E_WORD(hi, lo) (uint16_t)((((hi) << 8) & 0xFF00) | ((lo) & 0xFF))
 #define I40E_FLEX_WORD_MASK(off) (0x80 >> (off))
+#define I40E_FDIR_IPv6_TC_OFFSET	20
 
 /*
  * Structure to store flex pit for flow diretor.
diff --git a/drivers/net/i40e/i40e_fdir.c b/drivers/net/i40e/i40e_fdir.c
index a970b56aed..8013add431 100644
--- a/drivers/net/i40e/i40e_fdir.c
+++ b/drivers/net/i40e/i40e_fdir.c
@@ -67,7 +67,6 @@
 #define I40E_FDIR_IP_DEFAULT_VERSION_IHL    0x45
 #define I40E_FDIR_TCP_DEFAULT_DATAOFF       0x50
 #define I40E_FDIR_IPv6_DEFAULT_VTC_FLOW     0x60000000
-#define I40E_FDIR_IPv6_TC_OFFSET            20
 
 #define I40E_FDIR_IPv6_DEFAULT_HOP_LIMITS   0xFF
 #define I40E_FDIR_IPv6_PAYLOAD_LEN          380
diff --git a/drivers/net/i40e/i40e_flow.c b/drivers/net/i40e/i40e_flow.c
index 08c0f8e68f..93ecee2cc0 100644
--- a/drivers/net/i40e/i40e_flow.c
+++ b/drivers/net/i40e/i40e_flow.c
@@ -52,8 +52,7 @@
 #include "base/i40e_prototype.h"
 #include "i40e_ethdev.h"
 
-#define I40E_IPV4_TC_SHIFT	4
-#define I40E_IPV6_TC_MASK	(0x00FF << I40E_IPV4_TC_SHIFT)
+#define I40E_IPV6_TC_MASK	(0xFF << I40E_FDIR_IPv6_TC_OFFSET)
 #define I40E_IPV6_FRAG_HEADER	44
 #define I40E_TENANT_ARRAY_NUM	3
 #define I40E_TCI_MASK		0xFFFF
@@ -2352,6 +2351,7 @@ i40e_flow_parse_fdir_pattern(struct rte_eth_dev *dev,
 	bool cfg_flex_msk = true;
 	uint16_t outer_tpid;
 	uint16_t ether_type;
+	uint32_t vtc_flow_cpu;
 	int ret;
 
 	memset(off_arr, 0, sizeof(off_arr));
@@ -2508,8 +2508,8 @@ i40e_flow_parse_fdir_pattern(struct rte_eth_dev *dev,
 					input_set |= I40E_INSET_IPV6_DST;
 
 				if ((ipv6_mask->hdr.vtc_flow &
-				     rte_cpu_to_be_16(I40E_IPV6_TC_MASK))
-				    == rte_cpu_to_be_16(I40E_IPV6_TC_MASK))
+				     rte_cpu_to_be_32(I40E_IPV6_TC_MASK))
+				    == rte_cpu_to_be_32(I40E_IPV6_TC_MASK))
 					input_set |= I40E_INSET_IPV6_TC;
 				if (ipv6_mask->hdr.proto == UINT8_MAX)
 					input_set |= I40E_INSET_IPV6_NEXT_HDR;
@@ -2517,9 +2517,11 @@ i40e_flow_parse_fdir_pattern(struct rte_eth_dev *dev,
 					input_set |= I40E_INSET_IPV6_HOP_LIMIT;
 
 				/* Get filter info */
+				vtc_flow_cpu =
+				      rte_be_to_cpu_32(ipv6_spec->hdr.vtc_flow);
 				filter->input.flow.ipv6_flow.tc =
-					(uint8_t)(ipv6_spec->hdr.vtc_flow <<
-						  I40E_IPV4_TC_SHIFT);
+					(uint8_t)(vtc_flow_cpu >>
+						  I40E_FDIR_IPv6_TC_OFFSET);
 				filter->input.flow.ipv6_flow.proto =
 					ipv6_spec->hdr.proto;
 				filter->input.flow.ipv6_flow.hop_limits =