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Date:   Sun, 18 Oct 2020 00:36:08 +0300
From:   Vladimir Oltean <>
Cc:,,,, Christian Eggers <>,
        Kurt Kanzenbach <>
Subject: [RFC PATCH 10/13] net: dsa: tag_brcm: let DSA core deal with TX reallocation

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: Florian Fainelli <>
Signed-off-by: Vladimir Oltean <>
 net/dsa/tag_brcm.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/net/dsa/tag_brcm.c b/net/dsa/tag_brcm.c
index ad72dff8d524..e934dace3922 100644
--- a/net/dsa/tag_brcm.c
+++ b/net/dsa/tag_brcm.c
@@ -66,9 +66,6 @@ static struct sk_buff *brcm_tag_xmit_ll(struct sk_buff *skb,
 	u16 queue = skb_get_queue_mapping(skb);
 	u8 *brcm_tag;
-	if (skb_cow_head(skb, BRCM_TAG_LEN) < 0)
-		return NULL;
 	/* The Ethernet switch we are interfaced with needs packets to be at
 	 * least 64 bytes (including FCS) otherwise they will be discarded when
 	 * they enter the switch port logic. When Broadcom tags are enabled, we

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