[PATCH 5.10 124/290] net: dsa: tag_ar9331: let DSA core deal with TX reallocation

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From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

From: Vladimir Oltean <vladimir.oltean@xxxxxxx>

[ Upstream commit 86c4ad9a7876777c12fd5a7010152e4141fcb94d ]

Now that we have a central TX reallocation procedure that accounts for
the tagger's needed headroom in a generic way, we can remove the
skb_cow_head call.

Cc: Per Forlin <per.forlin@xxxxxxxx>
Cc: Oleksij Rempel <linux@xxxxxxxxxxxxxxxx>
Signed-off-by: Vladimir Oltean <vladimir.oltean@xxxxxxx>
Tested-by: Oleksij Rempel <linux@xxxxxxxxxxxxxxxx>
Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 net/dsa/tag_ar9331.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/net/dsa/tag_ar9331.c b/net/dsa/tag_ar9331.c
index 55b00694cdba..002cf7f952e2 100644
--- a/net/dsa/tag_ar9331.c
+++ b/net/dsa/tag_ar9331.c
@@ -31,9 +31,6 @@ static struct sk_buff *ar9331_tag_xmit(struct sk_buff *skb,
 	__le16 *phdr;
 	u16 hdr;
 
-	if (skb_cow_head(skb, AR9331_HDR_LEN) < 0)
-		return NULL;
-
 	phdr = skb_push(skb, AR9331_HDR_LEN);
 
 	hdr = FIELD_PREP(AR9331_HDR_VERSION_MASK, AR9331_HDR_VERSION);
-- 
2.30.1






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