[dpdk-dev] [PATCH 1/2] common/octeontx2: send link event to VF

[Harman Kalra <hkalra@marvell.com>]

Currently link event is only sent to the PF by AF as soon as it comes
up, or in case of any physical change in link. PF will broadcast
these link events to all its VFs as soon as it receives it.
But no event is sent when a new VF comes up, hence it will not have
the link status.
Adding support for sending link status to the VF once it comes up
successfully.

Signed-off-by: Harman Kalra <hkalra@marvell.com>
---
 drivers/common/octeontx2/otx2_dev.c | 26 ++++++++++++++++++++++++++
 drivers/common/octeontx2/otx2_dev.h | 10 +++++++---
 2 files changed, 33 insertions(+), 3 deletions(-)

diff --git a/drivers/common/octeontx2/otx2_dev.c b/drivers/common/octeontx2/otx2_dev.c
index 6a84df2344..1485e2b357 100644
--- a/drivers/common/octeontx2/otx2_dev.c
+++ b/drivers/common/octeontx2/otx2_dev.c
@@ -163,6 +163,32 @@ af_pf_wait_msg(struct otx2_dev *dev, uint16_t vf, int num_msg)
 		rsp->rc = msg->rc;
 		rsp->pcifunc = msg->pcifunc;
 
+		/* Whenever a PF comes up, AF sends the link status to it but
+		 * when VF comes up no such event is sent to respective VF.
+		 * Using MBOX_MSG_NIX_LF_START_RX response from AF for the
+		 * purpose and send the link status of PF to VF.
+		 */
+		if (msg->id == MBOX_MSG_NIX_LF_START_RX) {
+			/* Send link status to VF */
+			struct cgx_link_user_info linfo;
+			struct mbox_msghdr *vf_msg;
+
+			/* Get the link status */
+			if (dev->ops && dev->ops->link_status_get)
+				dev->ops->link_status_get(dev, &linfo);
+
+			/* Prepare the message to be sent */
+			vf_msg = otx2_mbox_alloc_msg(&dev->mbox_vfpf_up, vf,
+						     size);
+			otx2_mbox_req_init(MBOX_MSG_CGX_LINK_EVENT, vf_msg);
+			memcpy((uint8_t *)vf_msg + sizeof(struct mbox_msghdr),
+			       &linfo, sizeof(struct cgx_link_user_info));
+
+			vf_msg->rc = msg->rc;
+			vf_msg->pcifunc = msg->pcifunc;
+			/* Send to VF */
+			otx2_mbox_msg_send(&dev->mbox_vfpf_up, vf);
+		}
 		offset = mbox->rx_start + msg->next_msgoff;
 	}
 	rte_spinlock_unlock(&mdev->mbox_lock);
diff --git a/drivers/common/octeontx2/otx2_dev.h b/drivers/common/octeontx2/otx2_dev.h
index cd4fe517db..be0faacc6a 100644
--- a/drivers/common/octeontx2/otx2_dev.h
+++ b/drivers/common/octeontx2/otx2_dev.h
@@ -57,15 +57,19 @@
 
 struct otx2_dev;
 
-/* Link status callback */
-typedef void (*otx2_link_status_t)(struct otx2_dev *dev,
+/* Link status update callback */
+typedef void (*otx2_link_status_update_t)(struct otx2_dev *dev,
 				   struct cgx_link_user_info *link);
 /* PTP info callback */
 typedef int (*otx2_ptp_info_t)(struct otx2_dev *dev, bool ptp_en);
+/* Link status get callback */
+typedef void (*otx2_link_status_get_t)(struct otx2_dev *dev,
+				   struct cgx_link_user_info *link);
 
 struct otx2_dev_ops {
-	otx2_link_status_t link_status_update;
+	otx2_link_status_update_t link_status_update;
 	otx2_ptp_info_t ptp_info_update;
+	otx2_link_status_get_t link_status_get;
 };
 
 #define OTX2_DEV					\
-- 
2.18.0