net: drop unused skb_append_datato_frags()

This helper is unused since commit 988cf74d ("inet:
Stop generating UFO packets.")
Signed-off-by: NPaolo Abeni <pabeni@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/skbuff.h

@@ -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

@@ -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)
 {