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| author | Vijay Subramanian | 2014-10-02 19:00:43 +0200 |
|---|---|---|
| committer | David S. Miller | 2014-10-05 02:34:25 +0200 |
| commit | c8753d55afb436fd6a25c8bbe8d783f6dcf1c9f8 (patch) | |
| tree | 4d0cffb662c877a9a15bdf7bb84f2db35f4c33ec /include/linux/skbuff.h | |
| parent | mlx4: add a new xmit_more counter (diff) | |
| download | kernel-qcow2-linux-c8753d55afb436fd6a25c8bbe8d783f6dcf1c9f8.tar.gz kernel-qcow2-linux-c8753d55afb436fd6a25c8bbe8d783f6dcf1c9f8.tar.xz kernel-qcow2-linux-c8753d55afb436fd6a25c8bbe8d783f6dcf1c9f8.zip | |
net: Cleanup skb cloning by adding SKB_FCLONE_FREE
SKB_FCLONE_UNAVAILABLE has overloaded meaning depending on type of skb.
1: If skb is allocated from head_cache, it indicates fclone is not available.
2: If skb is a companion fclone skb (allocated from fclone_cache), it indicates
it is available to be used.
To avoid confusion for case 2 above, this patch replaces
SKB_FCLONE_UNAVAILABLE with SKB_FCLONE_FREE where appropriate. For fclone
companion skbs, this indicates it is free for use.
SKB_FCLONE_UNAVAILABLE will now simply indicate skb is from head_cache and
cannot / will not have a companion fclone.
Signed-off-by: Vijay Subramanian <subramanian.vijay@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 7c5036d11feb..3a5ec7638627 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -339,9 +339,10 @@ struct skb_shared_info { enum { - SKB_FCLONE_UNAVAILABLE, - SKB_FCLONE_ORIG, - SKB_FCLONE_CLONE, + SKB_FCLONE_UNAVAILABLE, /* skb has no fclone (from head_cache) */ + SKB_FCLONE_ORIG, /* orig skb (from fclone_cache) */ + SKB_FCLONE_CLONE, /* companion fclone skb (from fclone_cache) */ + SKB_FCLONE_FREE, /* this companion fclone skb is available */ }; enum { |