netdev - [PATCH v11] net-next/bnx2x: refactor common code to bnx2x_stop

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Message-Id: <20240315212625.1589-1-thinhtr@linux.ibm.com>
Date: Fri, 15 Mar 2024 16:26:25 -0500
From: Thinh Tran <thinhtr@...ux.ibm.com>
To: jacob.e.keller@...el.com, kuba@...nel.org
Cc: netdev@...r.kernel.org, VENKATA.SAI.DUGGI@....com, abdhalee@...ibm.com,
        aelior@...vell.com, davem@...emloft.net, drc@...ux.vnet.ibm.com,
        edumazet@...gle.com, manishc@...vell.com, pabeni@...hat.com,
        simon.horman@...igine.com, skalluru@...vell.com,
        Thinh Tran <thinhtr@...ux.ibm.com>
Subject: [PATCH v11] net-next/bnx2x: refactor common code to bnx2x_stop_nic()

Refactor common code which disables and releases HW interrupts, deletes
NAPI objects, into a new bnx2x_stop_nic() function.

Fixes: bf23ffc8a9a7 ("bnx2x: new flag for track HW resource allocation")
v11: updated with coding style per Jacob's suggestion
     this patch targets net-next

Signed-off-by: Thinh Tran <thinhtr@...ux.ibm.com>
Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>

---
 .../net/ethernet/broadcom/bnx2x/bnx2x_cmn.c   | 29 ++++++++++++-------
 .../net/ethernet/broadcom/bnx2x/bnx2x_cmn.h   |  1 +
 .../net/ethernet/broadcom/bnx2x/bnx2x_main.c  | 25 +++-------------
 .../net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c  | 12 ++------
 4 files changed, 25 insertions(+), 42 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index c9b6acd8c892..a413b555059e 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -3098,17 +3098,8 @@ int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode, bool keep_link)
 		if (!CHIP_IS_E1x(bp))
 			bnx2x_pf_disable(bp);
 
-		if (!bp->nic_stopped) {
-			/* Disable HW interrupts, NAPI */
-			bnx2x_netif_stop(bp, 1);
-			/* Delete all NAPI objects */
-			bnx2x_del_all_napi(bp);
-			if (CNIC_LOADED(bp))
-				bnx2x_del_all_napi_cnic(bp);
-			/* Release IRQs */
-			bnx2x_free_irq(bp);
-			bp->nic_stopped = true;
-		}
+		/* Disable HW interrupts, delete NAPIs, Release IRQs */
+		bnx2x_stop_nic(bp, 1);
 
 		/* Report UNLOAD_DONE to MCP */
 		bnx2x_send_unload_done(bp, false);
@@ -5138,3 +5129,19 @@ void bnx2x_schedule_sp_rtnl(struct bnx2x *bp, enum sp_rtnl_flag flag,
 	   flag);
 	schedule_delayed_work(&bp->sp_rtnl_task, 0);
 }
+
+void bnx2x_stop_nic(struct bnx2x *bp, int disable_hw)
+{
+	if (bp->nic_stopped)
+		return;
+
+	/* Disable HW interrupts, NAPI */
+	bnx2x_netif_stop(bp, disable_hw);
+	/* Delete all NAPI objects */
+	bnx2x_del_all_napi(bp);
+	if (CNIC_LOADED(bp))
+		bnx2x_del_all_napi_cnic(bp);
+	/* Release IRQs */
+	bnx2x_free_irq(bp);
+	bp->nic_stopped = true;
+}
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
index 0bc1367fd649..a35a02299b33 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
@@ -553,6 +553,7 @@ void bnx2x_free_skbs(struct bnx2x *bp);
 void bnx2x_netif_stop(struct bnx2x *bp, int disable_hw);
 void bnx2x_netif_start(struct bnx2x *bp);
 int bnx2x_load_cnic(struct bnx2x *bp);
+void bnx2x_stop_nic(struct bnx2x *bp, int disable_hw);
 
 /**
  * bnx2x_enable_msix - set msix configuration.
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index 0d8e61c63c7c..ff75c883cffe 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -9474,18 +9474,8 @@ void bnx2x_chip_cleanup(struct bnx2x *bp, int unload_mode, bool keep_link)
 		}
 	}
 
-	if (!bp->nic_stopped) {
-		/* Disable HW interrupts, NAPI */
-		bnx2x_netif_stop(bp, 1);
-		/* Delete all NAPI objects */
-		bnx2x_del_all_napi(bp);
-		if (CNIC_LOADED(bp))
-			bnx2x_del_all_napi_cnic(bp);
-
-		/* Release IRQs */
-		bnx2x_free_irq(bp);
-		bp->nic_stopped = true;
-	}
+	/* Disable HW interrupts, delete NAPIs, Release IRQs */
+	bnx2x_stop_nic(bp, 1);
 
 	/* Reset the chip, unless PCI function is offline. If we reach this
 	 * point following a PCI error handling, it means device is really
@@ -14241,16 +14231,9 @@ static pci_ers_result_t bnx2x_io_slot_reset(struct pci_dev *pdev)
 		}
 		bnx2x_drain_tx_queues(bp);
 		bnx2x_send_unload_req(bp, UNLOAD_RECOVERY);
-		if (!bp->nic_stopped) {
-			bnx2x_netif_stop(bp, 1);
-			bnx2x_del_all_napi(bp);
 
-			if (CNIC_LOADED(bp))
-				bnx2x_del_all_napi_cnic(bp);
-
-			bnx2x_free_irq(bp);
-			bp->nic_stopped = true;
-		}
+		/* Disable HW interrupts, delete NAPIs, Release IRQs */
+		bnx2x_stop_nic(bp, 1);
 
 		/* Report UNLOAD_DONE to MCP */
 		bnx2x_send_unload_done(bp, true);
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c
index 8946a931e87e..e92e82423096 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c
@@ -529,16 +529,8 @@ void bnx2x_vfpf_close_vf(struct bnx2x *bp)
 	bnx2x_vfpf_finalize(bp, &req->first_tlv);
 
 free_irq:
-	if (!bp->nic_stopped) {
-		/* Disable HW interrupts, NAPI */
-		bnx2x_netif_stop(bp, 0);
-		/* Delete all NAPI objects */
-		bnx2x_del_all_napi(bp);
-
-		/* Release IRQs */
-		bnx2x_free_irq(bp);
-		bp->nic_stopped = true;
-	}
+	/* Disable HW interrupts, delete NAPIs, Release IRQs */
+	bnx2x_stop_nic(bp, 0);
 }
 
 static void bnx2x_leading_vfq_init(struct bnx2x *bp, struct bnx2x_virtf *vf,
-- 
2.25.1