[PATCH net-next 3/7] net: bcmgenet: rename ENET_MAX_MTU_SIZE to ENET_MAX_FRAME_LEN

[Nicolai Buchwitz]

ENET_MAX_MTU_SIZE holds a frame length, not an MTU. Both users program it
into hardware that expects a frame length. The name is wrong once the MTU
is no longer fixed at ETH_DATA_LEN.

No functional change.

Signed-off-by: Nicolai Buchwitz <nb@xxxxxxxxxxx>
---
 drivers/net/ethernet/broadcom/genet/bcmgenet.c | 4 ++--
 drivers/net/ethernet/broadcom/genet/bcmgenet.h | 7 +++----
 2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index d89ae6599760..5cb3d25482a0 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -2638,7 +2638,7 @@ static void init_umac(struct bcmgenet_priv *priv)
 			     UMAC_MIB_CTRL);
 	bcmgenet_umac_writel(priv, 0, UMAC_MIB_CTRL);
 
-	bcmgenet_umac_writel(priv, ENET_MAX_MTU_SIZE, UMAC_MAX_FRAME_LEN);
+	bcmgenet_umac_writel(priv, ENET_MAX_FRAME_LEN, UMAC_MAX_FRAME_LEN);
 
 	/* init tx registers, enable TSB */
 	reg = bcmgenet_tbuf_ctrl_get(priv);
@@ -2744,7 +2744,7 @@ static void bcmgenet_init_tx_ring(struct bcmgenet_priv *priv,
 
 	/* Set flow period for ring != 0 */
 	if (index)
-		flow_period_val = ENET_MAX_MTU_SIZE << 16;
+		flow_period_val = ENET_MAX_FRAME_LEN << 16;
 
 	bcmgenet_tdma_ring_writel(priv, index, 0, TDMA_PROD_INDEX);
 	bcmgenet_tdma_ring_writel(priv, index, 0, TDMA_CONS_INDEX);
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.h b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
index 86f2aed20dbe..501dd1256693 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.h
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.h
@@ -28,12 +28,11 @@
 /* which ring is descriptor based */
 #define DESC_INDEX				16
 
-/* Body(1500) + EH_SIZE(14) + VLANTAG(4) + BRCMTAG(6) + FCS(4) = 1528.
- * 1536 is multiple of 256 bytes
- */
 #define ENET_BRCM_TAG_LEN	6
 #define ENET_PAD		8
-#define ENET_MAX_MTU_SIZE	(ETH_DATA_LEN + ETH_HLEN + VLAN_HLEN + \
+
+/* Longest frame the MAC must accept for the default MTU */
+#define ENET_MAX_FRAME_LEN	(ETH_DATA_LEN + ETH_HLEN + VLAN_HLEN + \
 				 ENET_BRCM_TAG_LEN + ETH_FCS_LEN + ENET_PAD)
 #define DMA_MAX_BURST_LENGTH    0x10
 

-- 
2.53.0