net: Convert skb_frag_t to bio_vec

struct bio_vec {

	struct page	*bv_page;

	unsigned int	bv_len;

	union {

		__u32		page_offset;

		unsigned int	bv_offset;

	};

};

struct bvec_iter {

	sector_t		bi_sector;	/* device address in 512 byte

#include <linux/compiler.h>

#include <linux/time.h>

#include <linux/bug.h>

#include <linux/bvec.h>

#include <linux/cache.h>

#include <linux/rbtree.h>

#include <linux/socket.h>

 */

#define GSO_BY_FRAGS	0xFFFF

typedef struct skb_frag_struct skb_frag_t;

struct skb_frag_struct {

	struct page *bv_page;

	unsigned int bv_len;

	__u32 page_offset;

};

typedef struct bio_vec skb_frag_t;

/**

 * skb_frag_size - Returns the size of a skb fragment