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net: vlan: update wrong comments

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vlan_insert_tag() and friends do not allocate a new skb.
However they might allocate a new skb->head.
Update their comments to better describe their behavior.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2023-08-03 07:14:26 +00:00 committed by David S. Miller
parent 6f5ca184cb
commit 7740bb882f
1 changed files with 3 additions and 3 deletions
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6
include/linux/if_vlan.h
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@ -408,7 +408,7 @@ static inline int __vlan_insert_tag(struct sk_buff *skb,
* @mac_len: MAC header length including outer vlan headers
*
* Inserts the VLAN tag into @skb as part of the payload at offset mac_len
* Returns a VLAN tagged skb. If a new skb is created, @skb is freed.
* Returns a VLAN tagged skb. This might change skb->head.
*
* Following the skb_unshare() example, in case of error, the calling function
* doesn't have to worry about freeing the original skb.
@ -437,7 +437,7 @@ static inline struct sk_buff *vlan_insert_inner_tag(struct sk_buff *skb,
* @vlan_tci: VLAN TCI to insert
*
* Inserts the VLAN tag into @skb as part of the payload
* Returns a VLAN tagged skb. If a new skb is created, @skb is freed.
* Returns a VLAN tagged skb. This might change skb->head.
*
* Following the skb_unshare() example, in case of error, the calling function
* doesn't have to worry about freeing the original skb.
@ -457,7 +457,7 @@ static inline struct sk_buff *vlan_insert_tag(struct sk_buff *skb,
* @vlan_tci: VLAN TCI to insert
*
* Inserts the VLAN tag into @skb as part of the payload
* Returns a VLAN tagged skb. If a new skb is created, @skb is freed.
* Returns a VLAN tagged skb. This might change skb->head.
*
* Following the skb_unshare() example, in case of error, the calling function
* doesn't have to worry about freeing the original skb.