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net: ethernet: mtk_eth_soc: mtk_ppe: prefer newly added l2 flows

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When a device is roaming between interfaces and a new flow entry is
created, we should assume that its output device is more up to date than
whatever entry existed already.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Felix Fietkau 2023-04-05 17:10:26 +02:00 committed by David S. Miller
parent 05f3ab7780
commit e28531143b
1 changed files with 12 additions and 2 deletions
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14
drivers/net/ethernet/mediatek/mtk_ppe.c
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@ -635,10 +635,20 @@ void mtk_foe_entry_clear(struct mtk_ppe *ppe, struct mtk_flow_entry *entry)
static int
mtk_foe_entry_commit_l2(struct mtk_ppe *ppe, struct mtk_flow_entry *entry)
{
struct mtk_flow_entry *prev;
entry->type = MTK_FLOW_TYPE_L2;
return rhashtable_insert_fast(&ppe->l2_flows, &entry->l2_node,
mtk_flow_l2_ht_params);
prev = rhashtable_lookup_get_insert_fast(&ppe->l2_flows, &entry->l2_node,
mtk_flow_l2_ht_params);
if (likely(!prev))
return 0;
if (IS_ERR(prev))
return PTR_ERR(prev);
return rhashtable_replace_fast(&ppe->l2_flows, &prev->l2_node,
&entry->l2_node, mtk_flow_l2_ht_params);
}
int mtk_foe_entry_commit(struct mtk_ppe *ppe, struct mtk_flow_entry *entry)