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- From: Felix Fietkau <[email protected]>
- Date: Mon, 20 Mar 2023 15:37:55 +0100
- Subject: [PATCH] net: ethernet: mediatek: mtk_ppe: prefer newly added l2
- flows over existing ones
- 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 <[email protected]>
- ---
- --- a/drivers/net/ethernet/mediatek/mtk_ppe.c
- +++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
- @@ -663,10 +663,20 @@ void mtk_foe_entry_clear(struct mtk_ppe
- 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)
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