* Question on recv_pkt
@ 2014-10-07 8:18 Martin Townsend
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From: Martin Townsend @ 2014-10-07 8:18 UTC (permalink / raw)
To: linux-bluetooth
Hi,
I'm trying to work out why the skb is cloned in recv_pkt in net/bluetooth/6lowpan.c when performing IPHC [0]. I would like to call process_data with an unshared skb as my proposal for the next patch is to use pskb_expand_head[1] in the decompression routine to save copying but this requires an skb with users == 1 otherwise it will call BUG().
In light of the locking problem Jukka was seeing with my previous patch I'm wondering if me removing this skb_clone was the cause so I want to make sure I know what it's there for before sending the patch. Any help is appreciated.
- Martin.
[0]http://lxr.free-electrons.com/source/net/bluetooth/6lowpan.c#L258
[1]http://lxr.free-electrons.com/source/net/core/skbuff.c#L1037
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