Scroll to navigation

__PSKB_COPY_FCLONE(9) Linux Networking __PSKB_COPY_FCLONE(9)

NAME

__pskb_copy_fclone - create copy of an sk_buff with private head.

SYNOPSIS

struct sk_buff * __pskb_copy_fclone(struct sk_buff * skb, int headroom, gfp_t gfp_mask, bool fclone);

ARGUMENTS

struct sk_buff * skb

buffer to copy

int headroom

headroom of new skb

gfp_t gfp_mask

allocation priority

bool fclone

if true allocate the copy of the skb from the fclone cache instead of the head cache; it is recommended to set this to true for the cases where the copy will likely be cloned

DESCRIPTION

Make a copy of both an &sk_buff and part of its data, located in header. Fragmented data remain shared. This is used when the caller wishes to modify only header of &sk_buff and needs private copy of the header to alter. Returns NULL on failure or the pointer to the buffer on success. The returned buffer has a reference count of 1.

COPYRIGHT

September 2017 Kernel Hackers Manual 4.12