diff options
| author | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2013-12-23 17:05:23 +0000 |
|---|---|---|
| committer | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2013-12-23 17:05:23 +0000 |
| commit | 92f7f37af0c4deef3c110f5d39525bccf7b3e076 (patch) | |
| tree | aa91fb75070ea8ec86d86aa4dde29c9dbf561113 | |
| parent | 51f7dc6d9fcf312943aba651c060c350cf022a07 (diff) | |
ar71xx: fix max frame length of the QCA955x SoCs
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@39161 3c298f89-4303-0410-b956-a3cf2f4a3e73
| -rw-r--r-- | target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c b/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c index 17b3ec4a6d..21feeb9ad3 100644 --- a/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c +++ b/target/linux/ar71xx/files/arch/mips/ath79/dev-eth.c @@ -981,6 +981,17 @@ void __init ath79_register_eth(unsigned int id) pdata->has_gbit = 1; pdata->is_ar724x = 1; + /* + * Limit the maximum frame length to 4095 bytes. + * Although the documentation says that the hardware + * limit is 16383 bytes but that does not work in + * practice. It seems that the hardware only updates + * the lowest 12 bits of the packet length field + * in the RX descriptor. + */ + pdata->max_frame_len = SZ_4K - 1; + pdata->desc_pktlen_mask = SZ_16K - 1; + if (!pdata->fifo_cfg1) pdata->fifo_cfg1 = 0x0010ffff; if (!pdata->fifo_cfg2) |