diff options
| author | Pieter Van Trappen <pieter.van.trappen@cern.ch> | 2024-08-12 12:06:55 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-08-16 04:56:03 +0300 |
| commit | 7cb43579641dc437941782b473387c6f8bbc1d25 (patch) | |
| tree | 509622fc052ef40eca5440a693c44e2121df9d8a /drivers/net/ethernet/cadence | |
| parent | e7d731326ef0622f103e5ed47d3405f71cdcd7f6 (diff) | |
| download | linux-7cb43579641dc437941782b473387c6f8bbc1d25.tar.xz | |
net: macb: increase max_mtu for oversized frames
Increase max_mtu from 1500 to 1518 bytes when not configured for jumbo
frames. Use 1536 as a starting point as documented in macb.h for
oversized (big) frames, which is the configuration applied in case
jumbo frames capability is not configured; ref. macb_main.c.
Signed-off-by: Pieter Van Trappen <pieter.van.trappen@cern.ch>
Link: https://patch.msgid.link/20240812090657.583821-1-vtpieter@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/cadence')
| -rw-r--r-- | drivers/net/ethernet/cadence/macb_main.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index 97b4cc5feb95..127bb3208034 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -5119,12 +5119,12 @@ static int macb_probe(struct platform_device *pdev) goto err_out_free_netdev; } - /* MTU range: 68 - 1500 or 10240 */ + /* MTU range: 68 - 1518 or 10240 */ dev->min_mtu = GEM_MTU_MIN_SIZE; if ((bp->caps & MACB_CAPS_JUMBO) && bp->jumbo_max_len) dev->max_mtu = bp->jumbo_max_len - ETH_HLEN - ETH_FCS_LEN; else - dev->max_mtu = ETH_DATA_LEN; + dev->max_mtu = 1536 - ETH_HLEN - ETH_FCS_LEN; if (bp->caps & MACB_CAPS_BD_RD_PREFETCH) { val = GEM_BFEXT(RXBD_RDBUFF, gem_readl(bp, DCFG10)); |