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| author | John Crispin <john@phrozen.org> | 2017-06-01 12:29:40 +0200 |
|---|---|---|
| committer | John Crispin <john@phrozen.org> | 2017-06-01 12:30:17 +0200 |
| commit | 7f9143168faef445effceead08d77ecc7c3e9dc6 (patch) | |
| tree | 2271c4e239611b7ca9faf488778bd57ab6f57926 /target/linux/ramips/files-4.9/drivers/net/ethernet/mtk/mtk_eth_soc.c | |
| parent | 9bc9457b85beedc718cadea22d5bdf7f807e758f (diff) | |
| download | upstream-7f9143168faef445effceead08d77ecc7c3e9dc6.tar.gz upstream-7f9143168faef445effceead08d77ecc7c3e9dc6.tar.bz2 upstream-7f9143168faef445effceead08d77ecc7c3e9dc6.zip | |
ramips: add jumbo frame support for v4.9
Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'target/linux/ramips/files-4.9/drivers/net/ethernet/mtk/mtk_eth_soc.c')
| -rw-r--r-- | target/linux/ramips/files-4.9/drivers/net/ethernet/mtk/mtk_eth_soc.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/target/linux/ramips/files-4.9/drivers/net/ethernet/mtk/mtk_eth_soc.c b/target/linux/ramips/files-4.9/drivers/net/ethernet/mtk/mtk_eth_soc.c index 3e8768f63a..5f4afade06 100644 --- a/target/linux/ramips/files-4.9/drivers/net/ethernet/mtk/mtk_eth_soc.c +++ b/target/linux/ramips/files-4.9/drivers/net/ethernet/mtk/mtk_eth_soc.c @@ -1350,6 +1350,10 @@ static int fe_change_mtu(struct net_device *dev, int new_mtu) if (!(priv->flags & FE_FLAG_JUMBO_FRAME)) return eth_change_mtu(dev, new_mtu); + if (IS_ENABLED(CONFIG_SOC_MT7621)) + if (new_mtu > 2048) + return -EINVAL; + frag_size = fe_max_frag_size(new_mtu); if (new_mtu < 68 || frag_size > PAGE_SIZE) return -EINVAL; @@ -1373,15 +1377,17 @@ static int fe_change_mtu(struct net_device *dev, int new_mtu) return 0; fe_stop(dev); - fwd_cfg = fe_r32(FE_GDMA1_FWD_CFG); - if (new_mtu <= ETH_DATA_LEN) { - fwd_cfg &= ~FE_GDM1_JMB_EN; - } else { - fwd_cfg &= ~(FE_GDM1_JMB_LEN_MASK << FE_GDM1_JMB_LEN_SHIFT); - fwd_cfg |= (DIV_ROUND_UP(frag_size, 1024) << - FE_GDM1_JMB_LEN_SHIFT) | FE_GDM1_JMB_EN; + if (!IS_ENABLED(CONFIG_SOC_MT7621)) { + fwd_cfg = fe_r32(FE_GDMA1_FWD_CFG); + if (new_mtu <= ETH_DATA_LEN) { + fwd_cfg &= ~FE_GDM1_JMB_EN; + } else { + fwd_cfg &= ~(FE_GDM1_JMB_LEN_MASK << FE_GDM1_JMB_LEN_SHIFT); + fwd_cfg |= (DIV_ROUND_UP(frag_size, 1024) << + FE_GDM1_JMB_LEN_SHIFT) | FE_GDM1_JMB_EN; + } + fe_w32(fwd_cfg, FE_GDMA1_FWD_CFG); } - fe_w32(fwd_cfg, FE_GDMA1_FWD_CFG); return fe_open(dev); } |