[dpdk-dev] [PATCH v5 5/6] net/qede: initialize VF MAC and link

[Manish Chopra <manishc@marvell.com>]

This patch configures VFs with random mac if no MAC is
provided by the PF/bulletin. This also adds required bulletin
APIs by PF-PMD driver to communicate LINK properties/changes to
the VFs through bulletin update mechanism.

With these changes, VF-PMD instance is able to run
fastpath over PF-PMD driver instance.

Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Rasesh Mody <rmody@marvell.com>
---
 drivers/net/qede/qede_ethdev.c | 34 ++++++++++++++++++++-
 drivers/net/qede/qede_main.c   |  7 ++++-
 drivers/net/qede/qede_sriov.c  | 55 ++++++++++++++++++++++++++++++++++
 drivers/net/qede/qede_sriov.h  |  1 +
 4 files changed, 95 insertions(+), 2 deletions(-)

diff --git a/drivers/net/qede/qede_ethdev.c b/drivers/net/qede/qede_ethdev.c
index 210a3b10f..e785f3fb0 100644
--- a/drivers/net/qede/qede_ethdev.c
+++ b/drivers/net/qede/qede_ethdev.c
@@ -2479,6 +2479,24 @@ static void qede_update_pf_params(struct ecore_dev *edev)
 	qed_ops->common->update_pf_params(edev, &pf_params);
 }
 
+static void qede_generate_random_mac_addr(struct rte_ether_addr *mac_addr)
+{
+	uint64_t random;
+
+	/* Set Organizationally Unique Identifier (OUI) prefix. */
+	mac_addr->addr_bytes[0] = 0x00;
+	mac_addr->addr_bytes[1] = 0x09;
+	mac_addr->addr_bytes[2] = 0xC0;
+
+	/* Force indication of locally assigned MAC address. */
+	mac_addr->addr_bytes[0] |= RTE_ETHER_LOCAL_ADMIN_ADDR;
+
+	/* Generate the last 3 bytes of the MAC address with a random number. */
+	random = rte_rand();
+
+	memcpy(&mac_addr->addr_bytes[3], &random, 3);
+}
+
 static int qede_common_dev_init(struct rte_eth_dev *eth_dev, bool is_vf)
 {
 	struct rte_pci_device *pci_dev;
@@ -2491,7 +2509,7 @@ static int qede_common_dev_init(struct rte_eth_dev *eth_dev, bool is_vf)
 	uint8_t bulletin_change;
 	uint8_t vf_mac[RTE_ETHER_ADDR_LEN];
 	uint8_t is_mac_forced;
-	bool is_mac_exist;
+	bool is_mac_exist = false;
 	/* Fix up ecore debug level */
 	uint32_t dp_module = ~0 & ~ECORE_MSG_HW;
 	uint8_t dp_level = ECORE_LEVEL_VERBOSE;
@@ -2669,6 +2687,20 @@ static int qede_common_dev_init(struct rte_eth_dev *eth_dev, bool is_vf)
 				DP_ERR(edev, "No VF macaddr assigned\n");
 			}
 		}
+
+		/* If MAC doesn't exist from PF, generate random one */
+		if (!is_mac_exist) {
+			struct rte_ether_addr *mac_addr;
+
+			mac_addr = (struct rte_ether_addr *)&vf_mac;
+			qede_generate_random_mac_addr(mac_addr);
+
+			rte_ether_addr_copy(mac_addr,
+					    &eth_dev->data->mac_addrs[0]);
+
+			rte_ether_addr_copy(&eth_dev->data->mac_addrs[0],
+					    &adapter->primary_mac);
+		}
 	}
 
 	eth_dev->dev_ops = (is_vf) ? &qede_eth_vf_dev_ops : &qede_eth_dev_ops;
diff --git a/drivers/net/qede/qede_main.c b/drivers/net/qede/qede_main.c
index 0afacc064..805a95e3c 100644
--- a/drivers/net/qede/qede_main.c
+++ b/drivers/net/qede/qede_main.c
@@ -651,10 +651,15 @@ void qed_link_update(struct ecore_hwfn *hwfn)
 	struct ecore_dev *edev = hwfn->p_dev;
 	struct qede_dev *qdev = (struct qede_dev *)edev;
 	struct rte_eth_dev *dev = (struct rte_eth_dev *)qdev->ethdev;
+	int rc;
+
+	rc = qede_link_update(dev, 0);
+	qed_inform_vf_link_state(hwfn);
 
-	if (!qede_link_update(dev, 0))
+	if (!rc) {
 		_rte_eth_dev_callback_process(dev,
 					      RTE_ETH_EVENT_INTR_LSC, NULL);
+	}
 }
 
 static int qed_drain(struct ecore_dev *edev)
diff --git a/drivers/net/qede/qede_sriov.c b/drivers/net/qede/qede_sriov.c
index 6d620dde8..93f7a2a55 100644
--- a/drivers/net/qede/qede_sriov.c
+++ b/drivers/net/qede/qede_sriov.c
@@ -126,6 +126,28 @@ static void qed_handle_vf_msg(struct ecore_hwfn *hwfn)
 	ecore_ptt_release(hwfn, ptt);
 }
 
+static void qed_handle_bulletin_post(struct ecore_hwfn *hwfn)
+{
+	struct ecore_ptt *ptt;
+	int i;
+
+	ptt = ecore_ptt_acquire(hwfn);
+	if (!ptt) {
+		DP_NOTICE(hwfn, true, "PTT acquire failed\n");
+		qed_schedule_iov(hwfn, QED_IOV_WQ_BULLETIN_UPDATE_FLAG);
+		return;
+	}
+
+	/* TODO - at the moment update bulletin board of all VFs.
+	 * if this proves to costly, we can mark VFs that need their
+	 * bulletins updated.
+	 */
+	ecore_for_each_vf(hwfn, i)
+		ecore_iov_post_vf_bulletin(hwfn, i, ptt);
+
+	ecore_ptt_release(hwfn, ptt);
+}
+
 void qed_iov_pf_task(void *arg)
 {
 	struct ecore_hwfn *p_hwfn = arg;
@@ -134,6 +156,13 @@ void qed_iov_pf_task(void *arg)
 		OSAL_CLEAR_BIT(QED_IOV_WQ_MSG_FLAG, &p_hwfn->iov_task_flags);
 		qed_handle_vf_msg(p_hwfn);
 	}
+
+	if (OSAL_GET_BIT(QED_IOV_WQ_BULLETIN_UPDATE_FLAG,
+			 &p_hwfn->iov_task_flags)) {
+		OSAL_CLEAR_BIT(QED_IOV_WQ_BULLETIN_UPDATE_FLAG,
+			       &p_hwfn->iov_task_flags);
+		qed_handle_bulletin_post(p_hwfn);
+	}
 }
 
 int qed_schedule_iov(struct ecore_hwfn *p_hwfn, enum qed_iov_wq_flag flag)
@@ -144,3 +173,29 @@ int qed_schedule_iov(struct ecore_hwfn *p_hwfn, enum qed_iov_wq_flag flag)
 	OSAL_SET_BIT(flag, &p_hwfn->iov_task_flags);
 	return rte_eal_alarm_set(1, qed_iov_pf_task, p_hwfn);
 }
+
+void qed_inform_vf_link_state(struct ecore_hwfn *hwfn)
+{
+	struct ecore_hwfn *lead_hwfn = ECORE_LEADING_HWFN(hwfn->p_dev);
+	struct ecore_mcp_link_capabilities caps;
+	struct ecore_mcp_link_params params;
+	struct ecore_mcp_link_state link;
+	int i;
+
+	if (!hwfn->pf_iov_info)
+		return;
+
+	rte_memcpy(&params, ecore_mcp_get_link_params(lead_hwfn),
+		   sizeof(params));
+	rte_memcpy(&link, ecore_mcp_get_link_state(lead_hwfn), sizeof(link));
+	rte_memcpy(&caps, ecore_mcp_get_link_capabilities(lead_hwfn),
+		   sizeof(caps));
+
+	/* Update bulletin of all future possible VFs with link configuration */
+	for (i = 0; i < hwfn->p_dev->p_iov_info->total_vfs; i++) {
+		ecore_iov_set_link(hwfn, i,
+				   &params, &link, &caps);
+	}
+
+	qed_schedule_iov(hwfn, QED_IOV_WQ_BULLETIN_UPDATE_FLAG);
+}
diff --git a/drivers/net/qede/qede_sriov.h b/drivers/net/qede/qede_sriov.h
index 8b7fa7daa..e58ecc2a5 100644
--- a/drivers/net/qede/qede_sriov.h
+++ b/drivers/net/qede/qede_sriov.h
@@ -17,5 +17,6 @@ enum qed_iov_wq_flag {
 	QED_IOV_WQ_DB_REC_HANDLER,
 };
 
+void qed_inform_vf_link_state(struct ecore_hwfn *hwfn);
 int qed_schedule_iov(struct ecore_hwfn *p_hwfn, enum qed_iov_wq_flag flag);
 void qed_iov_pf_task(void *arg);
-- 
2.17.1