linux-kernel - [PATCH v1] wifi: mt76: testmode: add nla_policy for MT76_TM_ATTR_TX

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Message-Id: <20230723080350.3716135-1-linma@zju.edu.cn>
Date:   Sun, 23 Jul 2023 16:03:50 +0800
From:   Lin Ma <linma@....edu.cn>
To:     nbd@....name, lorenzo@...nel.org, ryder.lee@...iatek.com,
        shayne.chen@...iatek.com, sean.wang@...iatek.com, kvalo@...nel.org,
        matthias.bgg@...il.com, angelogioacchino.delregno@...labora.com,
        mcoquelin.stm32@...il.com, alexandre.torgue@...s.st.com,
        linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        linux-stm32@...md-mailman.stormreply.com
Cc:     Lin Ma <linma@....edu.cn>
Subject: [PATCH v1] wifi: mt76: testmode: add nla_policy for MT76_TM_ATTR_TX_LENGTH

It seems that the nla_policy in mt76_tm_policy is missed for attribute
MT76_TM_ATTR_TX_LENGTH. This patch adds the correct description to make
sure the

  u32 val = nla_get_u32(tb[MT76_TM_ATTR_TX_LENGTH]);

in function mt76_testmode_cmd() is safe and will not result in
out-of-attribute read.

Fixes: f0efa8621550 ("mt76: add API for testmode support")
Signed-off-by: Lin Ma <linma@....edu.cn>
---
 drivers/net/wireless/mediatek/mt76/testmode.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/mediatek/mt76/testmode.c b/drivers/net/wireless/mediatek/mt76/testmode.c
index 0accc71a91c9..4644dace9bb3 100644
--- a/drivers/net/wireless/mediatek/mt76/testmode.c
+++ b/drivers/net/wireless/mediatek/mt76/testmode.c
@@ -8,6 +8,7 @@ const struct nla_policy mt76_tm_policy[NUM_MT76_TM_ATTRS] = {
 	[MT76_TM_ATTR_RESET] = { .type = NLA_FLAG },
 	[MT76_TM_ATTR_STATE] = { .type = NLA_U8 },
 	[MT76_TM_ATTR_TX_COUNT] = { .type = NLA_U32 },
+	[MT76_TM_ATTR_TX_LENGTH] = { .type = NLA_U32 },
 	[MT76_TM_ATTR_TX_RATE_MODE] = { .type = NLA_U8 },
 	[MT76_TM_ATTR_TX_RATE_NSS] = { .type = NLA_U8 },
 	[MT76_TM_ATTR_TX_RATE_IDX] = { .type = NLA_U8 },
-- 
2.17.1