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ramips: allow packets with ttl=0

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Some broken ISPs (e.g. Comcast) send DHCPv6 packets with hop limit=0.
This trips up the TTL=0 check in the PPE if enabled.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2019-03-24 12:05:56 +01:00
parent acf149d531
commit bee7ff7cf3
1 changed files with 2 additions and 2 deletions
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4
target/linux/ramips/files-4.14/drivers/net/ethernet/mediatek/mtk_offload.c
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@ -384,8 +384,8 @@ static int mtk_ppe_start(struct mtk_eth *eth)
mtk_w32(eth, 0x55555555, MTK_REG_PPE_DFT_CPORT);
#endif
/* drop packets with TTL=0 */
mtk_m32(eth, 0, MTK_PPE_GLO_CFG_TTL0_DROP, MTK_REG_PPE_GLO_CFG);
/* allow packets with TTL=0 */
mtk_m32(eth, MTK_PPE_GLO_CFG_TTL0_DROP, 0, MTK_REG_PPE_GLO_CFG);
/* send all traffic from gmac to the ppe */
mtk_m32(eth, 0xffff, 0x4444, MTK_GDMA_FWD_CFG(0));