[dpdk-dev] [PATCH v4 08/15] net/bnxt: switch CFA code to dynamic mbuf field

[Thomas Monjalon <thomas@monjalon.net>]

The CFA code from mark was stored in the deprecated mbuf field udata64.
It is moved to a dynamic field in order to allow removal of udata64.

Note: the new field has 32 bits, smaller than udata64.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---
 drivers/net/bnxt/bnxt_ethdev.c  | 19 +++++++++++++++++++
 drivers/net/bnxt/bnxt_rxr.c     |  2 +-
 drivers/net/bnxt/bnxt_rxr.h     |  5 +++++
 drivers/net/bnxt/rte_pmd_bnxt.h |  3 +++
 4 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 1c7d1b758d..f1350d39da 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -31,6 +31,7 @@
 #include "bnxt_nvm_defs.h"
 #include "bnxt_tf_common.h"
 #include "ulp_flow_db.h"
+#include "rte_pmd_bnxt.h"
 
 #define DRV_MODULE_NAME		"bnxt"
 static const char bnxt_version[] =
@@ -163,6 +164,8 @@ static const char *const bnxt_dev_args[] = {
  */
 #define BNXT_DEVARG_REP_FC_F2R_INVALID(rep_fc_f2r)	((rep_fc_f2r) > 1)
 
+int bnxt_cfa_code_dynfield_offset = -1;
+
 /*
  * max_num_kflows must be >= 32
  * and must be a power-of-2 supported value
@@ -6021,6 +6024,22 @@ bnxt_dev_init(struct rte_eth_dev *eth_dev, void *params __rte_unused)
 	    pci_dev->id.device_id == BROADCOM_DEV_ID_58802_VF)
 		bp->flags |= BNXT_FLAG_STINGRAY;
 
+	if (BNXT_TRUFLOW_EN(bp)) {
+		/* extra mbuf field is required to store CFA code from mark */
+		static const struct rte_mbuf_dynfield bnxt_cfa_code_dynfield_desc = {
+			.name = RTE_PMD_BNXT_CFA_CODE_DYNFIELD_NAME,
+			.size = sizeof(bnxt_cfa_code_dynfield_t),
+			.align = __alignof__(bnxt_cfa_code_dynfield_t),
+		};
+		bnxt_cfa_code_dynfield_offset =
+			rte_mbuf_dynfield_register(&bnxt_cfa_code_dynfield_desc);
+		if (bnxt_cfa_code_dynfield_offset < 0) {
+			PMD_DRV_LOG(ERR,
+			    "Failed to register mbuf field for TruFlow mark\n");
+			return -rte_errno;
+		}
+	}
+
 	rc = bnxt_init_board(eth_dev);
 	if (rc) {
 		PMD_DRV_LOG(ERR,
diff --git a/drivers/net/bnxt/bnxt_rxr.c b/drivers/net/bnxt/bnxt_rxr.c
index 039217fa60..7156ce7dd8 100644
--- a/drivers/net/bnxt/bnxt_rxr.c
+++ b/drivers/net/bnxt/bnxt_rxr.c
@@ -606,7 +606,7 @@ bnxt_ulp_set_mark_in_mbuf(struct bnxt *bp, struct rx_pkt_cmpl_hi *rxcmp1,
 			return mark_id;
 		/* Got the mark, write it to the mbuf and return */
 		mbuf->hash.fdir.hi = mark_id;
-		mbuf->udata64 = (cfa_code & 0xffffffffull) << 32;
+		BNXT_CFA_CODE_DYNFIELD(mbuf) = cfa_code & 0xffffffffull;
 		mbuf->hash.fdir.id = rxcmp1->cfa_code;
 		mbuf->ol_flags |= PKT_RX_FDIR | PKT_RX_FDIR_ID;
 		return mark_id;
diff --git a/drivers/net/bnxt/bnxt_rxr.h b/drivers/net/bnxt/bnxt_rxr.h
index b874e54a8c..2d16a551ce 100644
--- a/drivers/net/bnxt/bnxt_rxr.h
+++ b/drivers/net/bnxt/bnxt_rxr.h
@@ -95,6 +95,11 @@ void bnxt_set_mark_in_mbuf(struct bnxt *bp,
 			   struct rx_pkt_cmpl_hi *rxcmp1,
 			   struct rte_mbuf *mbuf);
 
+typedef uint32_t bnxt_cfa_code_dynfield_t;
+extern int bnxt_cfa_code_dynfield_offset;
+#define BNXT_CFA_CODE_DYNFIELD(mbuf) (*RTE_MBUF_DYNFIELD(mbuf, \
+		bnxt_cfa_code_dynfield_offset, bnxt_cfa_code_dynfield_t *))
+
 #define BNXT_RX_META_CFA_CODE_SHIFT		19
 #define BNXT_CFA_CODE_META_SHIFT		16
 #define BNXT_RX_META_CFA_CODE_INT_ACT_REC_BIT	0x8000000
diff --git a/drivers/net/bnxt/rte_pmd_bnxt.h b/drivers/net/bnxt/rte_pmd_bnxt.h
index 81d0d0e032..f538b6550e 100644
--- a/drivers/net/bnxt/rte_pmd_bnxt.h
+++ b/drivers/net/bnxt/rte_pmd_bnxt.h
@@ -9,6 +9,9 @@
 #include <rte_ethdev.h>
 #include <rte_ether.h>
 
+/** mbuf dynamic field where CFA code is stored */
+#define RTE_PMD_BNXT_CFA_CODE_DYNFIELD_NAME "rte_net_bnxt_dynfield_cfa_code"
+
 /*
  * Response sent back to the caller after callback
  */
-- 
2.28.0