Commit cc16567e authored by Paolo Abeni's avatar Paolo Abeni Committed by David S. Miller
Browse files

net: drop unused skb_append_datato_frags() 



This helper is unused since commit 988cf74d ("inet:
Stop generating UFO packets.")

Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 407257ce

include/linux/skbuff.h

+0 −5
Original line number Diff line number Diff line
@@ -1082,11 +1082,6 @@ static inline int skb_pad(struct sk_buff *skb, int pad) 
}

#define dev_kfree_skb(a)	consume_skb(a)



int skb_append_datato_frags(struct sock *sk, struct sk_buff *skb,

			    int getfrag(void *from, char *to, int offset,

					int len, int odd, struct sk_buff *skb),

			    void *from, int length);



int skb_append_pagefrags(struct sk_buff *skb, struct page *page,

			 int offset, size_t size);

net/core/skbuff.c

+0 −58
Original line number Diff line number Diff line
@@ -3381,64 +3381,6 @@ unsigned int skb_find_text(struct sk_buff *skb, unsigned int from, 
}

EXPORT_SYMBOL(skb_find_text);



/**

 * skb_append_datato_frags - append the user data to a skb

 * @sk: sock  structure

 * @skb: skb structure to be appended with user data.

 * @getfrag: call back function to be used for getting the user data

 * @from: pointer to user message iov

 * @length: length of the iov message

 *

 * Description: This procedure append the user data in the fragment part

 * of the skb if any page alloc fails user this procedure returns  -ENOMEM

 */

int skb_append_datato_frags(struct sock *sk, struct sk_buff *skb,

			int (*getfrag)(void *from, char *to, int offset,

					int len, int odd, struct sk_buff *skb),

			void *from, int length)

{

	int frg_cnt = skb_shinfo(skb)->nr_frags;

	int copy;

	int offset = 0;

	int ret;

	struct page_frag *pfrag = &current->task_frag;



	do {

		/* Return error if we don't have space for new frag */

		if (frg_cnt >= MAX_SKB_FRAGS)

			return -EMSGSIZE;



		if (!sk_page_frag_refill(sk, pfrag))

			return -ENOMEM;



		/* copy the user data to page */

		copy = min_t(int, length, pfrag->size - pfrag->offset);



		ret = getfrag(from, page_address(pfrag->page) + pfrag->offset,

			      offset, copy, 0, skb);

		if (ret < 0)

			return -EFAULT;



		/* copy was successful so update the size parameters */

		skb_fill_page_desc(skb, frg_cnt, pfrag->page, pfrag->offset,

				   copy);

		frg_cnt++;

		pfrag->offset += copy;

		get_page(pfrag->page);



		skb->truesize += copy;

		refcount_add(copy, &sk->sk_wmem_alloc);

		skb->len += copy;

		skb->data_len += copy;

		offset += copy;

		length -= copy;



	} while (length > 0);



	return 0;

}

EXPORT_SYMBOL(skb_append_datato_frags);



int skb_append_pagefrags(struct sk_buff *skb, struct page *page,

			 int offset, size_t size)

{