net: mana: Handle Reset Request from MANA NIC

Upon receiving the Reset Request, pause the connection and clean up
queues, wait for the specified period, then resume the NIC.
In the cleanup phase, the HWC is no longer responding, so set hwc_timeout
to zero to skip waiting on the response.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Link: https://patch.msgid.link/1751055983-29760-1-git-send-email-haiyangz@linux.microsoft.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 27 insertions, 10 deletions

diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c
index 016fd808ccad..a7973651ae51 100644
--- a/drivers/net/ethernet/microsoft/mana/mana_en.c
+++ b/drivers/net/ethernet/microsoft/mana/mana_en.c
@@ -47,6 +47,15 @@ static const struct file_operations mana_dbg_q_fops = {
 	.read   = mana_dbg_q_read,
 };
 
+static bool mana_en_need_log(struct mana_port_context *apc, int err)
+{
+	if (apc && apc->ac && apc->ac->gdma_dev &&
+	    apc->ac->gdma_dev->gdma_context)
+		return mana_need_log(apc->ac->gdma_dev->gdma_context, err);
+	else
+		return true;
+}
+
 /* Microsoft Azure Network Adapter (MANA) functions */
 
 static int mana_open(struct net_device *ndev)
@@ -854,7 +863,8 @@ static int mana_send_request(struct mana_context *ac, void *in_buf,
 		if (err == -EOPNOTSUPP)
 			return err;
 
-		if (req->req.msg_type != MANA_QUERY_PHY_STAT)
+		if (req->req.msg_type != MANA_QUERY_PHY_STAT &&
+		    mana_need_log(gc, err))
 			dev_err(dev, "Failed to send mana message: %d, 0x%x\n",
 				err, resp->status);
 		return err ? err : -EPROTO;
@@ -931,8 +941,10 @@ static void mana_pf_deregister_hw_vport(struct mana_port_context *apc)
 	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
 				sizeof(resp));
 	if (err) {
-		netdev_err(apc->ndev, "Failed to unregister hw vPort: %d\n",
-			   err);
+		if (mana_en_need_log(apc, err))
+			netdev_err(apc->ndev, "Failed to unregister hw vPort: %d\n",
+				   err);
+
 		return;
 	}
 
@@ -987,8 +999,10 @@ static void mana_pf_deregister_filter(struct mana_port_context *apc)
 	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
 				sizeof(resp));
 	if (err) {
-		netdev_err(apc->ndev, "Failed to unregister filter: %d\n",
-			   err);
+		if (mana_en_need_log(apc, err))
+			netdev_err(apc->ndev, "Failed to unregister filter: %d\n",
+				   err);
+
 		return;
 	}
 
@@ -1218,7 +1232,9 @@ static int mana_cfg_vport_steering(struct mana_port_context *apc,
 	err = mana_send_request(apc->ac, req, req_buf_size, &resp,
 				sizeof(resp));
 	if (err) {
-		netdev_err(ndev, "Failed to configure vPort RX: %d\n", err);
+		if (mana_en_need_log(apc, err))
+			netdev_err(ndev, "Failed to configure vPort RX: %d\n", err);
+
 		goto out;
 	}
 
@@ -1402,7 +1418,9 @@ void mana_destroy_wq_obj(struct mana_port_context *apc, u32 wq_type,
 	err = mana_send_request(apc->ac, &req, sizeof(req), &resp,
 				sizeof(resp));
 	if (err) {
-		netdev_err(ndev, "Failed to destroy WQ object: %d\n", err);
+		if (mana_en_need_log(apc, err))
+			netdev_err(ndev, "Failed to destroy WQ object: %d\n", err);
+
 		return;
 	}
 
@@ -3067,11 +3085,10 @@ static int mana_dealloc_queues(struct net_device *ndev)
 
 	apc->rss_state = TRI_STATE_FALSE;
 	err = mana_config_rss(apc, TRI_STATE_FALSE, false, false);
-	if (err) {
+	if (err && mana_en_need_log(apc, err))
 		netdev_err(ndev, "Failed to disable vPort: %d\n", err);
-		return err;
-	}
 
+	/* Even in err case, still need to cleanup the vPort */
 	mana_destroy_vport(apc);
 
 	return 0;