net: dsa: tag_brcm: let DSA core deal with TX reallocation

[ Upstream commit 2f0d030c5ffec6660f79a32b4f522155f75a9d71 ]

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 <f.fainelli@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/net/dsa/tag_brcm.c b/net/dsa/tag_brcm.c
index ad72dff..e934dac 100644 (file)
--- 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