2759 int skb_store_bits(struct sk_buff *skb, int offset, const void *from, int len)  in skb_store_bits()  argument
2771 		skb_copy_to_linear_data_offset(skb, offset, from, copy);  in skb_store_bits()
2775 		from += copy;  in skb_store_bits()
2797 				memcpy(vaddr + p_off, from + copied, p_len);  in skb_store_bits()
2804 			from += copy;  in skb_store_bits()
2819 					   from, copy))  in skb_store_bits()
2824 			from += copy;  in skb_store_bits()
3113 skb_zerocopy_headlen(const struct sk_buff *from)  in skb_zerocopy_headlen()  argument
3117 	if (!from->head_frag ||  in skb_zerocopy_headlen()
3118 	    skb_headlen(from) < L1_CACHE_BYTES ||  in skb_zerocopy_headlen()
3119 	    skb_shinfo(from)->nr_frags >= MAX_SKB_FRAGS) {  in skb_zerocopy_headlen()
3120 		hlen = skb_headlen(from);  in skb_zerocopy_headlen()
3122 			hlen = from->len;  in skb_zerocopy_headlen()
3125 	if (skb_has_frag_list(from))  in skb_zerocopy_headlen()
3126 		hlen = from->len;  in skb_zerocopy_headlen()
3151 skb_zerocopy(struct sk_buff *to, struct sk_buff *from, int len, int hlen)  in skb_zerocopy()  argument
3159 	BUG_ON(!from->head_frag && !hlen);  in skb_zerocopy()
3163 		return skb_copy_bits(from, 0, skb_put(to, len), len);  in skb_zerocopy()
3166 		ret = skb_copy_bits(from, 0, skb_put(to, hlen), hlen);  in skb_zerocopy()
3171 		plen = min_t(int, skb_headlen(from), len);  in skb_zerocopy()
3173 			page = virt_to_head_page(from->head);  in skb_zerocopy()
3174 			offset = from->data - (unsigned char *)page_address(page);  in skb_zerocopy()
3186 	if (unlikely(skb_orphan_frags(from, GFP_ATOMIC))) {  in skb_zerocopy()
3187 		skb_tx_error(from);  in skb_zerocopy()
3190 	skb_zerocopy_clone(to, from, GFP_ATOMIC);  in skb_zerocopy()
3192 	for (i = 0; i < skb_shinfo(from)->nr_frags; i++) {  in skb_zerocopy()
3197 		skb_shinfo(to)->frags[j] = skb_shinfo(from)->frags[i];  in skb_zerocopy()
3513 	int from, to, merge, todo;  in skb_shift()  local
3524 	from = 0;  in skb_shift()
3526 	fragfrom = &skb_shinfo(skb)->frags[from];  in skb_shift()
3545 			fragfrom = &skb_shinfo(skb)->frags[from];  in skb_shift()
3555 		from++;  in skb_shift()
3560 	    (skb_shinfo(skb)->nr_frags - from) > (MAX_SKB_FRAGS - to))  in skb_shift()
3566 	while ((todo > 0) && (from < skb_shinfo(skb)->nr_frags)) {  in skb_shift()
3570 		fragfrom = &skb_shinfo(skb)->frags[from];  in skb_shift()
3576 			from++;  in skb_shift()
3607 	while (from < skb_shinfo(skb)->nr_frags)  in skb_shift()
3608 		skb_shinfo(skb)->frags[to++] = skb_shinfo(skb)->frags[from++];  in skb_shift()
3641 void skb_prepare_seq_read(struct sk_buff *skb, unsigned int from,  in skb_prepare_seq_read()  argument
3644 	st->lower_offset = from;  in skb_prepare_seq_read()
3802 unsigned int skb_find_text(struct sk_buff *skb, unsigned int from,  in skb_find_text()  argument
3813 	skb_prepare_seq_read(skb, from, to, TS_SKB_CB(&state));  in skb_find_text()
3816 	return (ret <= to - from ? ret : UINT_MAX);  in skb_find_text()
5408 bool skb_try_coalesce(struct sk_buff *to, struct sk_buff *from,  in skb_try_coalesce()  argument
5412 	int i, delta, len = from->len;  in skb_try_coalesce()
5429 	if (to->pp_recycle != from->pp_recycle ||  in skb_try_coalesce()
5430 	    (from->pp_recycle && skb_cloned(from)))  in skb_try_coalesce()
5435 			BUG_ON(skb_copy_bits(from, 0, skb_put(to, len), len));  in skb_try_coalesce()
5441 	from_shinfo = skb_shinfo(from);  in skb_try_coalesce()
5444 	if (skb_zcopy(to) || skb_zcopy(from))  in skb_try_coalesce()
5447 	if (skb_headlen(from) != 0) {  in skb_try_coalesce()
5455 		if (skb_head_is_locked(from))  in skb_try_coalesce()
5458 		delta = from->truesize - SKB_DATA_ALIGN(sizeof(struct sk_buff));  in skb_try_coalesce()
5460 		page = virt_to_head_page(from->head);  in skb_try_coalesce()
5461 		offset = from->data - (unsigned char *)page_address(page);  in skb_try_coalesce()
5464 				   page, offset, skb_headlen(from));  in skb_try_coalesce()
5471 		delta = from->truesize - SKB_TRUESIZE(skb_end_offset(from));  in skb_try_coalesce()
5481 	if (!skb_cloned(from))  in skb_try_coalesce()