[dpdk-stable] patch 'net/bnxt: fix link handling and configuration' has been queued to LTS release 16.11.4

[luca.boccassi@gmail.com]

Hi,

FYI, your patch has been queued to LTS release 16.11.4

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 11/15/17. So please
shout if anyone has objections.

Thanks.

Kind regards,
Luca Boccassi

---
>From 88a85c6bddd883ce0070be8624d6354c49d6a9af Mon Sep 17 00:00:00 2001
From: Ajit Khaparde <ajit.khaparde@broadcom.com>
Date: Thu, 9 Nov 2017 11:46:28 -0600
Subject: [PATCH] net/bnxt: fix link handling and configuration

[ upstream commit 9a82633c27cdfbc33e34876dff41abdbfa71bb97 ]

Remove a case where we were sending a deprecated field to the FW.
There is no need to send auto_link_speed to the FW.
Also set the auto_mode correctly depending on the setting requested.

Fixes: 7bc8e9a227cc ("net/bnxt: support async link notification")

Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---
 drivers/net/bnxt/bnxt.h        |  2 ++
 drivers/net/bnxt/bnxt_cpr.c    |  2 +-
 drivers/net/bnxt/bnxt_ethdev.c | 33 +++++++++++------------
 drivers/net/bnxt/bnxt_hwrm.c   | 61 +++++++++++++++++++++++++++---------------
 4 files changed, 58 insertions(+), 40 deletions(-)

diff --git a/drivers/net/bnxt/bnxt.h b/drivers/net/bnxt/bnxt.h
index 4418c7fda..ff3c24063 100644
--- a/drivers/net/bnxt/bnxt.h
+++ b/drivers/net/bnxt/bnxt.h
@@ -112,6 +112,8 @@ struct bnxt_link_info {
 	uint16_t		auto_link_speed;
 	uint16_t		auto_link_speed_mask;
 	uint32_t		preemphasis;
+	uint8_t			phy_type;
+	uint8_t			media_type;
 };
 
 #define BNXT_COS_QUEUE_COUNT	8
diff --git a/drivers/net/bnxt/bnxt_cpr.c b/drivers/net/bnxt/bnxt_cpr.c
index 0139344ae..6f88ac91c 100644
--- a/drivers/net/bnxt/bnxt_cpr.c
+++ b/drivers/net/bnxt/bnxt_cpr.c
@@ -55,7 +55,7 @@ void bnxt_handle_async_event(struct bnxt *bp,
 	case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_STATUS_CHANGE:
 	case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CHANGE:
 	case HWRM_ASYNC_EVENT_CMPL_EVENT_ID_LINK_SPEED_CFG_CHANGE:
-		bnxt_link_update_op(bp->eth_dev, 0);
+		bnxt_link_update_op(bp->eth_dev, 1);
 		break;
 	default:
 		RTE_LOG(ERR, PMD, "handle_async_event id = 0x%x\n", event_id);
diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 1e956602a..b6feb5ad7 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -106,6 +106,8 @@ static struct rte_pci_id bnxt_pci_id_map[] = {
 	ETH_RSS_NONFRAG_IPV6_TCP |	\
 	ETH_RSS_NONFRAG_IPV6_UDP)
 
+static void bnxt_print_link_info(struct rte_eth_dev *eth_dev);
+
 /***********************/
 
 /*
@@ -261,6 +263,7 @@ static int bnxt_init_chip(struct bnxt *bp)
 			goto err_out;
 		}
 	}
+	bnxt_print_link_info(bp->eth_dev);
 
 	return 0;
 
@@ -415,20 +418,6 @@ static int bnxt_dev_configure_op(struct rte_eth_dev *eth_dev)
 	return 0;
 }
 
-static inline int
-rte_bnxt_atomic_write_link_status(struct rte_eth_dev *eth_dev,
-				struct rte_eth_link *link)
-{
-	struct rte_eth_link *dst = &eth_dev->data->dev_link;
-	struct rte_eth_link *src = link;
-
-	if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
-					*(uint64_t *)src) == 0)
-		return 1;
-
-	return 0;
-}
-
 static void bnxt_print_link_info(struct rte_eth_dev *eth_dev)
 {
 	struct rte_eth_link *link = &eth_dev->data->dev_link;
@@ -481,7 +470,7 @@ static int bnxt_dev_start_op(struct rte_eth_dev *eth_dev)
 
 	bnxt_enable_int(bp);
 
-	bnxt_link_update_op(eth_dev, 0);
+	bnxt_link_update_op(eth_dev, 1);
 	return 0;
 
 error:
@@ -497,9 +486,14 @@ error:
 static int bnxt_dev_set_link_up_op(struct rte_eth_dev *eth_dev)
 {
 	struct bnxt *bp = (struct bnxt *)eth_dev->data->dev_private;
+	int rc = 0;
 
-	eth_dev->data->dev_link.link_status = 1;
-	bnxt_set_hwrm_link_config(bp, true);
+	if (!bp->link_info.link_up)
+		rc = bnxt_set_hwrm_link_config(bp, true);
+	if (!rc)
+		eth_dev->data->dev_link.link_status = 1;
+
+	bnxt_print_link_info(eth_dev);
 	return 0;
 }
 
@@ -509,6 +503,8 @@ static int bnxt_dev_set_link_down_op(struct rte_eth_dev *eth_dev)
 
 	eth_dev->data->dev_link.link_status = 0;
 	bnxt_set_hwrm_link_config(bp, false);
+	bp->link_info.link_up = 0;
+
 	return 0;
 }
 
@@ -651,7 +647,8 @@ out:
 	/* Timed out or success */
 	if (new.link_status != eth_dev->data->dev_link.link_status ||
 	new.link_speed != eth_dev->data->dev_link.link_speed) {
-		rte_bnxt_atomic_write_link_status(eth_dev, &new);
+		memcpy(&eth_dev->data->dev_link, &new,
+			sizeof(struct rte_eth_link));
 		bnxt_print_link_info(eth_dev);
 	}
 
diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 6fd024ada..619bc979c 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -481,34 +481,38 @@ static int bnxt_hwrm_port_phy_cfg(struct bnxt *bp, struct bnxt_link_info *conf)
 	struct hwrm_port_phy_cfg_input req = {0};
 	struct hwrm_port_phy_cfg_output *resp = bp->hwrm_cmd_resp_addr;
 	uint32_t enables = 0;
-	uint32_t link_speed_mask =
-		HWRM_PORT_PHY_CFG_INPUT_ENABLES_AUTO_LINK_SPEED_MASK;
 
 	HWRM_PREP(req, PORT_PHY_CFG, -1, resp);
 
 	if (conf->link_up) {
+		/* Setting Fixed Speed. But AutoNeg is ON, So disable it */
+		if (bp->link_info.auto_mode && conf->link_speed) {
+			req.auto_mode = HWRM_PORT_PHY_CFG_INPUT_AUTO_MODE_NONE;
+			RTE_LOG(DEBUG, PMD, "Disabling AutoNeg\n");
+		}
+
 		req.flags = rte_cpu_to_le_32(conf->phy_flags);
 		req.force_link_speed = rte_cpu_to_le_16(conf->link_speed);
+		enables |= HWRM_PORT_PHY_CFG_INPUT_ENABLES_AUTO_MODE;
 		/*
 		 * Note, ChiMP FW 20.2.1 and 20.2.2 return an error when we set
 		 * any auto mode, even "none".
 		 */
 		if (!conf->link_speed) {
-			req.auto_mode = conf->auto_mode;
-			enables |= HWRM_PORT_PHY_CFG_INPUT_ENABLES_AUTO_MODE;
-			if (conf->auto_mode ==
-			    HWRM_PORT_PHY_CFG_INPUT_AUTO_MODE_SPEED_MASK) {
-				req.auto_link_speed_mask =
-					conf->auto_link_speed_mask;
-				enables |= link_speed_mask;
-			}
-			if (bp->link_info.auto_link_speed) {
-				req.auto_link_speed =
-					bp->link_info.auto_link_speed;
-				enables |=
-				HWRM_PORT_PHY_CFG_INPUT_ENABLES_AUTO_LINK_SPEED;
-			}
+			/* No speeds specified. Enable AutoNeg - all speeds */
+			req.auto_mode =
+				HWRM_PORT_PHY_CFG_INPUT_AUTO_MODE_ALL_SPEEDS;
 		}
+		/* AutoNeg - Advertise speeds specified. */
+		if (conf->auto_link_speed_mask) {
+			req.auto_mode =
+				HWRM_PORT_PHY_CFG_INPUT_AUTO_MODE_SPEED_MASK;
+			req.auto_link_speed_mask =
+				conf->auto_link_speed_mask;
+			enables |=
+			HWRM_PORT_PHY_CFG_INPUT_ENABLES_AUTO_LINK_SPEED_MASK;
+		}
+
 		req.auto_duplex = conf->duplex;
 		enables |= HWRM_PORT_PHY_CFG_INPUT_ENABLES_AUTO_DUPLEX;
 		req.auto_pause = conf->auto_pause;
@@ -556,6 +560,8 @@ static int bnxt_hwrm_port_phy_qcfg(struct bnxt *bp,
 	link_info->auto_pause = resp->auto_pause;
 	link_info->force_pause = resp->force_pause;
 	link_info->auto_mode = resp->auto_mode;
+	link_info->phy_type = resp->phy_type;
+	link_info->media_type = resp->media_type;
 
 	link_info->support_speeds = rte_le_to_cpu_16(resp->support_speeds);
 	link_info->auto_link_speed = rte_le_to_cpu_16(resp->auto_link_speed);
@@ -1274,6 +1280,11 @@ static uint16_t bnxt_parse_eth_link_duplex(uint32_t conf_link_speed)
 	return hw_link_duplex;
 }
 
+static uint16_t bnxt_check_eth_link_autoneg(uint32_t conf_link)
+{
+	return (conf_link & ETH_LINK_SPEED_FIXED) ? 0 : 1;
+}
+
 static uint16_t bnxt_parse_eth_link_speed(uint32_t conf_link_speed)
 {
 	uint16_t eth_link_speed = 0;
@@ -1482,7 +1493,7 @@ int bnxt_set_hwrm_link_config(struct bnxt *bp, bool link_up)
 	int rc = 0;
 	struct rte_eth_conf *dev_conf = &bp->eth_dev->data->dev_conf;
 	struct bnxt_link_info link_req;
-	uint16_t speed;
+	uint16_t speed, autoneg;
 
 	if (BNXT_NPAR_PF(bp) || BNXT_VF(bp))
 		return 0;
@@ -1497,20 +1508,28 @@ int bnxt_set_hwrm_link_config(struct bnxt *bp, bool link_up)
 	if (!link_up)
 		goto port_phy_cfg;
 
+	autoneg = bnxt_check_eth_link_autoneg(dev_conf->link_speeds);
 	speed = bnxt_parse_eth_link_speed(dev_conf->link_speeds);
 	link_req.phy_flags = HWRM_PORT_PHY_CFG_INPUT_FLAGS_RESET_PHY;
-	if (speed == 0) {
+	if (autoneg == 1) {
 		link_req.phy_flags |=
 				HWRM_PORT_PHY_CFG_INPUT_FLAGS_RESTART_AUTONEG;
-		link_req.auto_mode =
-				HWRM_PORT_PHY_CFG_INPUT_AUTO_MODE_SPEED_MASK;
 		link_req.auto_link_speed_mask =
 			bnxt_parse_eth_link_speed_mask(bp,
 						       dev_conf->link_speeds);
 	} else {
+		if (bp->link_info.phy_type ==
+		    HWRM_PORT_PHY_QCFG_OUTPUT_PHY_TYPE_BASET ||
+		    bp->link_info.phy_type ==
+		    HWRM_PORT_PHY_QCFG_OUTPUT_PHY_TYPE_BASETE ||
+		    bp->link_info.media_type ==
+		    HWRM_PORT_PHY_QCFG_OUTPUT_MEDIA_TYPE_TP) {
+			RTE_LOG(ERR, PMD, "10GBase-T devices must autoneg\n");
+			return -EINVAL;
+		}
+
 		link_req.phy_flags |= HWRM_PORT_PHY_CFG_INPUT_FLAGS_FORCE;
 		link_req.link_speed = speed;
-		RTE_LOG(INFO, PMD, "Set Link Speed %x\n", speed);
 	}
 	link_req.duplex = bnxt_parse_eth_link_duplex(dev_conf->link_speeds);
 	link_req.auto_pause = bp->link_info.auto_pause;
-- 
2.11.0