[PATCH 03/54] net/bnxt: enable vector mode processing

[Manish Kurup]

From: Kishore Padmanabha <kishore.padmanabha at broadcom.com>

When representors are not enabled, then truflow could be run in
vector mode processing to achieve higher throughput. Added logic
to check representors to enable or disable vector mode.

Signed-off-by: Kishore Padmanabha <kishore.padmanabha at broadcom.com>
Reviewed-by: Shuanglin Wang <shuanglin.wang at broadcom.com>
---
 drivers/net/bnxt/bnxt.h        |  7 +++
 drivers/net/bnxt/bnxt_ethdev.c | 88 +++++++++++++++++++++++++++++++++-
 2 files changed, 93 insertions(+), 2 deletions(-)

diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
index c9fdd36d3e..72ac66b0db 100644
--- a/drivers/net/bnxt/bnxt.h
+++ b/drivers/net/bnxt/bnxt.h
@@ -852,6 +852,13 @@ struct bnxt {
 	((bp)->flags2 & BNXT_FLAGS2_MULTIROOT_EN)
 
 #define	BNXT_FLAGS2_COMPRESSED_RX_CQE		BIT(5)
+#define	BNXT_FLAGS2_USE_MPC			BIT(6)
+#define BNXT_USE_MPC(bp)			\
+	((bp)->flags2 & BNXT_FLAGS2_USE_MPC)
+#define	BNXT_FLAGS2_REP_MODE			BIT(7)
+#define BNXT_REP_MODE_EN(bp)			\
+	((bp)->flags2 & BNXT_FLAGS2_REP_MODE)
+
 	uint32_t		fw_cap;
 #define BNXT_FW_CAP_HOT_RESET		BIT(0)
 #define BNXT_FW_CAP_IF_CHANGE		BIT(1)
diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index cb0d99b9ee..0836be3b1e 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -107,6 +107,8 @@ static const struct rte_pci_id bnxt_pci_id_map[] = {
 #define BNXT_DEVARG_IEEE_1588	"ieee-1588"
 #define BNXT_DEVARG_CQE_MODE	"cqe-mode"
 #define BNXT_DEVARG_MPC		"mpc"
+#define BNXT_DEVARG_SCALAR_MODE	"scalar-mode"
+#define BNXT_DEVARD_APP_INST_ID "app-instance-id"
 
 static const char *const bnxt_dev_args[] = {
 	BNXT_DEVARG_REPRESENTOR,
@@ -122,6 +124,8 @@ static const char *const bnxt_dev_args[] = {
 	BNXT_DEVARG_IEEE_1588,
 	BNXT_DEVARG_CQE_MODE,
 	BNXT_DEVARG_MPC,
+	BNXT_DEVARG_SCALAR_MODE,
+	BNXT_DEVARD_APP_INST_ID,
 	NULL
 };
 
@@ -1447,7 +1451,7 @@ bnxt_receive_function(struct rte_eth_dev *eth_dev)
 	 * asynchronous completions and receive completions can be placed in
 	 * the same completion ring.
 	 */
-	if ((BNXT_TRUFLOW_EN(bp) && !BNXT_CHIP_P7(bp)) ||
+	if ((BNXT_TRUFLOW_EN(bp) && BNXT_REP_MODE_EN(bp)) ||
 	    !BNXT_NUM_ASYNC_CPR(bp))
 		goto use_scalar_rx;
 
@@ -1523,7 +1527,7 @@ bnxt_transmit_function(__rte_unused struct rte_eth_dev *eth_dev)
 	 */
 	if (eth_dev->data->scattered_rx ||
 	    (offloads & ~RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) ||
-	    (BNXT_TRUFLOW_EN(bp) && !BNXT_CHIP_P7(bp)) ||
+	    (BNXT_TRUFLOW_EN(bp) && BNXT_REP_MODE_EN(bp)) ||
 	    bp->ieee_1588)
 		goto use_scalar_tx;
 
@@ -6385,6 +6389,64 @@ bnxt_parse_devarg_rep_fc_f2r(__rte_unused const char *key,
 	return 0;
 }
 
+static int
+bnxt_parse_devarg_representor_mode(__rte_unused const char *key,
+				   const char *value, void *opaque_arg)
+{
+	struct bnxt *bp = opaque_arg;
+	unsigned long rep;
+	char *end = NULL;
+
+	if (!value || !opaque_arg) {
+		PMD_DRV_LOG_LINE(ERR,
+				 "Invalid param passed to rep mode in devargs");
+		return -EINVAL;
+	}
+
+	rep = strtoul(value, &end, 10);
+	if (end == NULL || *end != '\0' ||
+	    (rep == ULONG_MAX && errno == ERANGE)) {
+		PMD_DRV_LOG_LINE(ERR,
+				 "Invalid param passed to rep mode in devargs");
+		return -EINVAL;
+	}
+
+	if (rep > 0)
+		bp->flags2 |= BNXT_FLAGS2_REP_MODE;
+	PMD_DRV_LOG_LINE(INFO, "representor feature enabled");
+
+	return 0;
+}
+
+static int
+bnxt_parse_devarg_scalar_mode(__rte_unused const char *key,
+			      const char *value, void *opaque_arg)
+{
+	struct bnxt *bp = opaque_arg;
+	unsigned long rep;
+	char *end = NULL;
+
+	if (!value || !opaque_arg) {
+		PMD_DRV_LOG_LINE(ERR,
+				 "Invalid param passed to scalar mode in devargs");
+		return -EINVAL;
+	}
+
+	rep = strtoul(value, &end, 10);
+	if (end == NULL || *end != '\0' ||
+	    (rep == ULONG_MAX && errno == ERANGE)) {
+		PMD_DRV_LOG_LINE(ERR,
+				 "Invalid param passed to scalar mode in devargs");
+		return -EINVAL;
+	}
+
+	if (rep > 0)
+		bp->flags2 |= BNXT_FLAGS2_REP_MODE;
+	PMD_DRV_LOG_LINE(INFO, "Scalar mode enabled");
+
+	return 0;
+}
+
 static int
 bnxt_parse_dev_args(struct bnxt *bp, struct rte_devargs *devargs)
 {
@@ -6445,6 +6507,28 @@ bnxt_parse_dev_args(struct bnxt *bp, struct rte_devargs *devargs)
 	rte_kvargs_process(kvlist, BNXT_DEVARG_CQE_MODE,
 			   bnxt_parse_devarg_cqe_mode, bp);
 
+	/*
+	 * Handler for "representor" devarg.
+	 * Invoked as for ex: "-a 000:00:0d.0,representor=1"
+	 */
+	rte_kvargs_process(kvlist, BNXT_DEVARG_REPRESENTOR,
+			   bnxt_parse_devarg_representor_mode, bp);
+
+	/*
+	 * Handler for "scalar-mode" devarg.
+	 * Invoked as for ex: "-a 000:00:0d.0,scalar-mode=1"
+	 */
+	rte_kvargs_process(kvlist, BNXT_DEVARG_SCALAR_MODE,
+			   bnxt_parse_devarg_scalar_mode, bp);
+
+	/*
+	 * Handler for "app-instance-id" devarg.
+	 * Invoked as for ex: "-a 000:00:0d.0,app-instance-id=1"
+	 * This argument is required for enabling truflow hot upgrade feature.
+	 */
+	rte_kvargs_process(kvlist, BNXT_DEVARD_APP_INST_ID,
+			   bnxt_parse_devarg_app_instance_id, bp);
+
 	rte_kvargs_free(kvlist);
 	return ret;
 }
-- 
2.39.5 (Apple Git-154)