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64 lines
1.8 KiB
Diff
64 lines
1.8 KiB
Diff
From: Pablo Neira Ayuso <pablo@netfilter.org>
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Date: Sun, 18 Apr 2021 23:11:44 +0200
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Subject: [PATCH] net: ethernet: mtk_eth_soc: missing mutex
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Patch 2ed37183abb7 ("netfilter: flowtable: separate replace, destroy and
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stats to different workqueues") splits the workqueue per event type. Add
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a mutex to serialize updates.
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Fixes: 502e84e2382d ("net: ethernet: mtk_eth_soc: add flow offloading support")
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Reported-by: Frank Wunderlich <frank-w@public-files.de>
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Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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--- a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
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+++ b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
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@@ -392,6 +392,8 @@ mtk_flow_offload_stats(struct mtk_eth *e
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return 0;
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}
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+static DEFINE_MUTEX(mtk_flow_offload_mutex);
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+
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static int
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mtk_eth_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv)
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{
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@@ -399,6 +401,7 @@ mtk_eth_setup_tc_block_cb(enum tc_setup_
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struct net_device *dev = cb_priv;
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struct mtk_mac *mac = netdev_priv(dev);
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struct mtk_eth *eth = mac->hw;
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+ int err;
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if (!tc_can_offload(dev))
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return -EOPNOTSUPP;
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@@ -406,18 +409,24 @@ mtk_eth_setup_tc_block_cb(enum tc_setup_
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if (type != TC_SETUP_CLSFLOWER)
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return -EOPNOTSUPP;
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+ mutex_lock(&mtk_flow_offload_mutex);
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switch (cls->command) {
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case FLOW_CLS_REPLACE:
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- return mtk_flow_offload_replace(eth, cls);
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+ err = mtk_flow_offload_replace(eth, cls);
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+ break;
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case FLOW_CLS_DESTROY:
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- return mtk_flow_offload_destroy(eth, cls);
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+ err = mtk_flow_offload_destroy(eth, cls);
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+ break;
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case FLOW_CLS_STATS:
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- return mtk_flow_offload_stats(eth, cls);
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+ err = mtk_flow_offload_stats(eth, cls);
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+ break;
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default:
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- return -EOPNOTSUPP;
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+ err = -EOPNOTSUPP;
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+ break;
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}
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+ mutex_unlock(&mtk_flow_offload_mutex);
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- return 0;
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+ return err;
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}
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static int
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