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38 lines
1.2 KiB
Diff
38 lines
1.2 KiB
Diff
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From: Felix Fietkau <nbd@nbd.name>
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Date: Mon, 20 Mar 2023 15:37:55 +0100
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Subject: [PATCH] net: ethernet: mediatek: mtk_ppe: prefer newly added l2
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flows over existing ones
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When a device is roaming between interfaces and a new flow entry is created,
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we should assume that its output device is more up to date than whatever
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entry existed already.
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
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+++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
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@@ -639,10 +639,20 @@ void mtk_foe_entry_clear(struct mtk_ppe
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static int
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mtk_foe_entry_commit_l2(struct mtk_ppe *ppe, struct mtk_flow_entry *entry)
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{
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+ struct mtk_flow_entry *prev;
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+
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entry->type = MTK_FLOW_TYPE_L2;
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- return rhashtable_insert_fast(&ppe->l2_flows, &entry->l2_node,
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- mtk_flow_l2_ht_params);
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+ prev = rhashtable_lookup_get_insert_fast(&ppe->l2_flows, &entry->l2_node,
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+ mtk_flow_l2_ht_params);
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+ if (likely(!prev))
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+ return 0;
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+
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+ if (IS_ERR(prev))
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+ return PTR_ERR(prev);
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+
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+ return rhashtable_replace_fast(&ppe->l2_flows, &prev->l2_node,
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+ &entry->l2_node, mtk_flow_l2_ht_params);
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}
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int mtk_foe_entry_commit(struct mtk_ppe *ppe, struct mtk_flow_entry *entry)
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