1961 int skb_store_bits(struct sk_buff *skb, int offset, const void *from, int len)  in skb_store_bits()  argument
1973 		skb_copy_to_linear_data_offset(skb, offset, from, copy);  in skb_store_bits()
1977 		from += copy;  in skb_store_bits()
1995 			       from, copy);  in skb_store_bits()
2001 			from += copy;  in skb_store_bits()
2016 					   from, copy))  in skb_store_bits()
2021 			from += copy;  in skb_store_bits()
2204 skb_zerocopy_headlen(const struct sk_buff *from)  in skb_zerocopy_headlen()  argument
2208 	if (!from->head_frag ||  in skb_zerocopy_headlen()
2209 	    skb_headlen(from) < L1_CACHE_BYTES ||  in skb_zerocopy_headlen()
2210 	    skb_shinfo(from)->nr_frags >= MAX_SKB_FRAGS)  in skb_zerocopy_headlen()
2211 		hlen = skb_headlen(from);  in skb_zerocopy_headlen()
2213 	if (skb_has_frag_list(from))  in skb_zerocopy_headlen()
2214 		hlen = from->len;  in skb_zerocopy_headlen()
2239 skb_zerocopy(struct sk_buff *to, struct sk_buff *from, int len, int hlen)  in skb_zerocopy()  argument
2247 	BUG_ON(!from->head_frag && !hlen);  in skb_zerocopy()
2251 		return skb_copy_bits(from, 0, skb_put(to, len), len);  in skb_zerocopy()
2254 		ret = skb_copy_bits(from, 0, skb_put(to, hlen), hlen);  in skb_zerocopy()
2259 		plen = min_t(int, skb_headlen(from), len);  in skb_zerocopy()
2261 			page = virt_to_head_page(from->head);  in skb_zerocopy()
2262 			offset = from->data - (unsigned char *)page_address(page);  in skb_zerocopy()
2274 	if (unlikely(skb_orphan_frags(from, GFP_ATOMIC))) {  in skb_zerocopy()
2275 		skb_tx_error(from);  in skb_zerocopy()
2279 	for (i = 0; i < skb_shinfo(from)->nr_frags; i++) {  in skb_zerocopy()
2282 		skb_shinfo(to)->frags[j] = skb_shinfo(from)->frags[i];  in skb_zerocopy()
2591 	int from, to, merge, todo;  in skb_shift()  local
2598 	from = 0;  in skb_shift()
2600 	fragfrom = &skb_shinfo(skb)->frags[from];  in skb_shift()
2619 			fragfrom = &skb_shinfo(skb)->frags[from];  in skb_shift()
2629 		from++;  in skb_shift()
2634 	    (skb_shinfo(skb)->nr_frags - from) > (MAX_SKB_FRAGS - to))  in skb_shift()
2640 	while ((todo > 0) && (from < skb_shinfo(skb)->nr_frags)) {  in skb_shift()
2644 		fragfrom = &skb_shinfo(skb)->frags[from];  in skb_shift()
2650 			from++;  in skb_shift()
2681 	while (from < skb_shinfo(skb)->nr_frags)  in skb_shift()
2682 		skb_shinfo(skb)->frags[to++] = skb_shinfo(skb)->frags[from++];  in skb_shift()
2715 void skb_prepare_seq_read(struct sk_buff *skb, unsigned int from,  in skb_prepare_seq_read()  argument
2718 	st->lower_offset = from;  in skb_prepare_seq_read()
2858 unsigned int skb_find_text(struct sk_buff *skb, unsigned int from,  in skb_find_text()  argument
2867 	skb_prepare_seq_read(skb, from, to, TS_SKB_CB(&state));  in skb_find_text()
2870 	return (ret <= to - from ? ret : UINT_MAX);  in skb_find_text()
2886 			int (*getfrag)(void *from, char *to, int offset,  in skb_append_datato_frags()  argument
2888 			void *from, int length)  in skb_append_datato_frags()
2907 		ret = getfrag(from, page_address(pfrag->page) + pfrag->offset,  in skb_append_datato_frags()
4148 bool skb_try_coalesce(struct sk_buff *to, struct sk_buff *from,  in skb_try_coalesce()  argument
4151 	int i, delta, len = from->len;  in skb_try_coalesce()
4160 			BUG_ON(skb_copy_bits(from, 0, skb_put(to, len), len));  in skb_try_coalesce()
4165 	if (skb_has_frag_list(to) || skb_has_frag_list(from))  in skb_try_coalesce()
4168 	if (skb_headlen(from) != 0) {  in skb_try_coalesce()
4173 		    skb_shinfo(from)->nr_frags >= MAX_SKB_FRAGS)  in skb_try_coalesce()
4176 		if (skb_head_is_locked(from))  in skb_try_coalesce()
4179 		delta = from->truesize - SKB_DATA_ALIGN(sizeof(struct sk_buff));  in skb_try_coalesce()
4181 		page = virt_to_head_page(from->head);  in skb_try_coalesce()
4182 		offset = from->data - (unsigned char *)page_address(page);  in skb_try_coalesce()
4185 				   page, offset, skb_headlen(from));  in skb_try_coalesce()
4189 		    skb_shinfo(from)->nr_frags > MAX_SKB_FRAGS)  in skb_try_coalesce()
4192 		delta = from->truesize - SKB_TRUESIZE(skb_end_offset(from));  in skb_try_coalesce()
4198 	       skb_shinfo(from)->frags,  in skb_try_coalesce()
4199 	       skb_shinfo(from)->nr_frags * sizeof(skb_frag_t));  in skb_try_coalesce()
4200 	skb_shinfo(to)->nr_frags += skb_shinfo(from)->nr_frags;  in skb_try_coalesce()
4202 	if (!skb_cloned(from))  in skb_try_coalesce()
4203 		skb_shinfo(from)->nr_frags = 0;  in skb_try_coalesce()
4208 	for (i = 0; i < skb_shinfo(from)->nr_frags; i++)  in skb_try_coalesce()
4209 		skb_frag_ref(from, i);  in skb_try_coalesce()