skb_unshare9
Make a copy of a shared buffer
Arguments
skb
buffer to check
pri
priority for memory allocation
Overview
If the socket buffer is a clone then this function creates a new copy of the data, drops a reference count on the old copy and returns the new copy with the reference count at 1. If the buffer is not a clone the original buffer is returned. When called with a spinlock held or from interrupt state pri must be GFP_ATOMIC
NULL is returned on a memory allocation failure.
History
- Debian 9 (Stretch): the text shown here
- Debian 8 (Jessie)
- Debian 7 (Wheezy)
- Debian 6.0 (Squeeze)
- Debian 5.0 (Lenny)
- Debian 4.0 (Etch)