skb_unshare (9) - Linux Man Pages

skb_unshare: make a copy of a shared buffer

NAME

skb_unshare - make a copy of a shared buffer

SYNOPSIS

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

ARGUMENTS

skb

buffer to check

pri

priority for memory allocation

DESCRIPTION

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.

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