skb_share_check

Langue: en

Autres versions - même langue

Version: June 2009 (debian - 07/07/09)

Section: 9 (Appels noyau Linux)

NAME

skb_share_check - check if buffer is shared and if so clone it

SYNOPSIS

struct sk_buff * skb_share_check(struct sk_buff * skb, gfp_t pri);

ARGUMENTS

skb

buffer to check

pri

priority for memory allocation

DESCRIPTION

If the buffer is shared the buffer is cloned and the old copy drops a reference. A new clone with a single reference is returned. If the buffer is not shared the original buffer is returned. When being called from interrupt status or with spinlocks held pri must be GFP_ATOMIC.

NULL is returned on a memory allocation failure.