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| author | Felix Fietkau <nbd@openwrt.org> | 2015-01-24 22:45:16 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2015-01-24 22:45:16 +0000 |
| commit | e634e07893e25abef74ea3d194e130a3772580b5 (patch) | |
| tree | 4d685a04855c299f1297151cb090376e70c5f3ba /target/linux/ramips | |
| parent | 5d4837706aeca469368c0dbb8802b9fa919c8a7c (diff) | |
| download | mtk-20170518-e634e07893e25abef74ea3d194e130a3772580b5.zip mtk-20170518-e634e07893e25abef74ea3d194e130a3772580b5.tar.gz mtk-20170518-e634e07893e25abef74ea3d194e130a3772580b5.tar.bz2 | |
ralink: use fe_max_buf_size to get rx buffer size
the rx_buf_size now is 1534 when mtu is 1500.
the ethernet frame with vlan tag and FCS is 1522.
so the buffer is enough.
Signed-off-by: michael lee <igvtee@gmail.com>
SVN-Revision: 44116
Diffstat (limited to 'target/linux/ramips')
| -rw-r--r-- | target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.c index 550b424..0047b28 100644 --- a/target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.c +++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.c @@ -178,7 +178,7 @@ static inline int fe_max_frag_size(int mtu) static inline int fe_max_buf_size(int frag_size) { - return frag_size - FE_RX_HLEN - + return frag_size - NET_SKB_PAD - NET_IP_ALIGN - SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); } @@ -1284,13 +1284,11 @@ static int fe_change_mtu(struct net_device *dev, int new_mtu) if (old_mtu > ETH_DATA_LEN && new_mtu > ETH_DATA_LEN) return 0; - if (new_mtu <= ETH_DATA_LEN) { + if (new_mtu <= ETH_DATA_LEN) priv->frag_size = fe_max_frag_size(ETH_DATA_LEN); - priv->rx_buf_size = MAX_RX_LENGTH; - } else { + else priv->frag_size = PAGE_SIZE; - priv->rx_buf_size = fe_max_buf_size(PAGE_SIZE); - } + priv->rx_buf_size = fe_max_buf_size(priv->frag_size); if (!netif_running(dev)) return 0; @@ -1443,7 +1441,7 @@ static int fe_probe(struct platform_device *pdev) priv->soc = soc; priv->msg_enable = netif_msg_init(fe_msg_level, FE_DEFAULT_MSG_ENABLE); priv->frag_size = fe_max_frag_size(ETH_DATA_LEN); - priv->rx_buf_size = MAX_RX_LENGTH; + priv->rx_buf_size = fe_max_buf_size(priv->frag_size); if (priv->frag_size > PAGE_SIZE) { dev_err(&pdev->dev, "error frag size.\n"); err = -EINVAL; |