netdev - [PATCH net-next 12/13] net: fec: fec_enet_rx_queue(): move_call to _vlan_hwaccel_put

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Message-Id: <20241016-fec-cleanups-v1-12-de783bd15e6a@pengutronix.de>
Date: Wed, 16 Oct 2024 23:52:00 +0200
From: Marc Kleine-Budde <mkl@...gutronix.de>
To: Wei Fang <wei.fang@....com>, Shenwei Wang <shenwei.wang@....com>, 
 Clark Wang <xiaoning.wang@....com>, "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>, Richard Cochran <richardcochran@...il.com>
Cc: imx@...ts.linux.dev, netdev@...r.kernel.org, 
 linux-kernel@...r.kernel.org, kernel@...gutronix.de, 
 Marc Kleine-Budde <mkl@...gutronix.de>
Subject: [PATCH net-next 12/13] net: fec: fec_enet_rx_queue(): move_call to
 _vlan_hwaccel_put_tag()

To clean up the VLAN handling, move the call to
__vlan_hwaccel_put_tag() into the body of the if statement, which
checks for VLAN handling in the first place.

This allows to remove vlan_packet_rcvd and reduce the scope of
vlan_tag.

Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
---
 drivers/net/ethernet/freescale/fec_main.c | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 640fbde10861005e7e2eb23358bfeaac49ec1792..d9415c7c16cea3fc3d91e198c21af9fe9e21747e 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1688,8 +1688,6 @@ fec_enet_rx_queue(struct net_device *ndev, u16 queue_id, int budget)
 	ushort	pkt_len;
 	int	pkt_received = 0;
 	struct	bufdesc_ex *ebdp = NULL;
-	bool	vlan_packet_rcvd = false;
-	u16	vlan_tag;
 	int	index = 0;
 	bool	need_swap = fep->quirks & FEC_QUIRK_SWAP_FRAME;
 	struct bpf_prog *xdp_prog = READ_ONCE(fep->xdp_prog);
@@ -1814,18 +1812,18 @@ fec_enet_rx_queue(struct net_device *ndev, u16 queue_id, int budget)
 			ebdp = (struct bufdesc_ex *)bdp;

 		/* If this is a VLAN packet remove the VLAN Tag */
-		vlan_packet_rcvd = false;
 		if ((ndev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
 		    fep->bufdesc_ex &&
 		    (ebdp->cbd_esc & cpu_to_fec32(BD_ENET_RX_VLAN))) {
 			/* Push and remove the vlan tag */
 			struct vlan_ethhdr *vlan_header = skb_vlan_eth_hdr(skb);
-			vlan_tag = ntohs(vlan_header->h_vlan_TCI);
-
-			vlan_packet_rcvd = true;
+			u16 vlan_tag = ntohs(vlan_header->h_vlan_TCI);

 			memmove(skb->data + VLAN_HLEN, skb->data, ETH_ALEN * 2);
 			skb_pull(skb, VLAN_HLEN);
+			__vlan_hwaccel_put_tag(skb,
+					       htons(ETH_P_8021Q),
+					       vlan_tag);
 		}

 		skb->protocol = eth_type_trans(skb, ndev);
@@ -1845,12 +1843,6 @@ fec_enet_rx_queue(struct net_device *ndev, u16 queue_id, int budget)
 			}
 		}

-		/* Handle received VLAN packets */
-		if (vlan_packet_rcvd)
-			__vlan_hwaccel_put_tag(skb,
-					       htons(ETH_P_8021Q),
-					       vlan_tag);
-
 		skb_record_rx_queue(skb, queue_id);
 		napi_gro_receive(&fep->napi, skb);

-- 
2.45.2