net: airoha: Move min/max packet len configuration in airoha_dev_open()

In order to align max allowed packet size to the configured mtu, move
REG_GDM_LEN_CFG configuration in airoha_dev_open routine.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250304-airoha-eth-rx-sg-v1-1-283ebc61120e@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/airoha/airoha_eth.c b/drivers/net/ethernet/airoha/airoha_eth.c
index ff837168845d6cacf97708b8b9462829162407bd..a9ed3fc2b5195f6b1868e65e1b8c0e5ef99e920f 100644 (file)
--- a/drivers/net/ethernet/airoha/airoha_eth.c
+++ b/drivers/net/ethernet/airoha/airoha_eth.c
@@ -138,15 +138,10 @@ static void airoha_fe_maccr_init(struct airoha_eth *eth)
 {
        int p;
 
-       for (p = 1; p <= ARRAY_SIZE(eth->ports); p++) {
+       for (p = 1; p <= ARRAY_SIZE(eth->ports); p++)
                airoha_fe_set(eth, REG_GDM_FWD_CFG(p),
                              GDM_TCP_CKSUM | GDM_UDP_CKSUM | GDM_IP4_CKSUM |
                              GDM_DROP_CRC_ERR);
-               airoha_fe_rmw(eth, REG_GDM_LEN_CFG(p),
-                             GDM_SHORT_LEN_MASK | GDM_LONG_LEN_MASK,
-                             FIELD_PREP(GDM_SHORT_LEN_MASK, 60) |
-                             FIELD_PREP(GDM_LONG_LEN_MASK, 4004));
-       }
 
        airoha_fe_rmw(eth, REG_CDM1_VLAN_CTRL, CDM1_VLAN_MASK,
                      FIELD_PREP(CDM1_VLAN_MASK, 0x8100));
@@ -1520,9 +1515,9 @@ static void airoha_update_hw_stats(struct airoha_gdm_port *port)
 
 static int airoha_dev_open(struct net_device *dev)
 {
+       int err, len = ETH_HLEN + dev->mtu + ETH_FCS_LEN;
        struct airoha_gdm_port *port = netdev_priv(dev);
        struct airoha_qdma *qdma = port->qdma;
-       int err;
 
        netif_tx_start_all_queues(dev);
        err = airoha_set_vip_for_gdm_port(port, true);
@@ -1536,6 +1531,11 @@ static int airoha_dev_open(struct net_device *dev)
                airoha_fe_clear(qdma->eth, REG_GDM_INGRESS_CFG(port->id),
                                GDM_STAG_EN_MASK);
 
+       airoha_fe_rmw(qdma->eth, REG_GDM_LEN_CFG(port->id),
+                     GDM_SHORT_LEN_MASK | GDM_LONG_LEN_MASK,
+                     FIELD_PREP(GDM_SHORT_LEN_MASK, 60) |
+                     FIELD_PREP(GDM_LONG_LEN_MASK, len));
+
        airoha_qdma_set(qdma, REG_QDMA_GLOBAL_CFG,
                        GLOBAL_CFG_TX_DMA_EN_MASK |
                        GLOBAL_CFG_RX_DMA_EN_MASK);