2550 int skb_store_bits(struct sk_buff *skb, int offset, const void *from, int len)  in skb_store_bits()  argument
2562 		skb_copy_to_linear_data_offset(skb, offset, from, copy);  in skb_store_bits()
2566 		from += copy;  in skb_store_bits()
2588 				memcpy(vaddr + p_off, from + copied, p_len);  in skb_store_bits()
2595 			from += copy;  in skb_store_bits()
2610 					   from, copy))  in skb_store_bits()
2615 			from += copy;  in skb_store_bits()
2903 skb_zerocopy_headlen(const struct sk_buff *from)  in skb_zerocopy_headlen()  argument
2907 	if (!from->head_frag ||  in skb_zerocopy_headlen()
2908 	    skb_headlen(from) < L1_CACHE_BYTES ||  in skb_zerocopy_headlen()
2909 	    skb_shinfo(from)->nr_frags >= MAX_SKB_FRAGS)  in skb_zerocopy_headlen()
2910 		hlen = skb_headlen(from);  in skb_zerocopy_headlen()
2912 	if (skb_has_frag_list(from))  in skb_zerocopy_headlen()
2913 		hlen = from->len;  in skb_zerocopy_headlen()
2938 skb_zerocopy(struct sk_buff *to, struct sk_buff *from, int len, int hlen)  in skb_zerocopy()  argument
2946 	BUG_ON(!from->head_frag && !hlen);  in skb_zerocopy()
2950 		return skb_copy_bits(from, 0, skb_put(to, len), len);  in skb_zerocopy()
2953 		ret = skb_copy_bits(from, 0, skb_put(to, hlen), hlen);  in skb_zerocopy()
2958 		plen = min_t(int, skb_headlen(from), len);  in skb_zerocopy()
2960 			page = virt_to_head_page(from->head);  in skb_zerocopy()
2961 			offset = from->data - (unsigned char *)page_address(page);  in skb_zerocopy()
2973 	if (unlikely(skb_orphan_frags(from, GFP_ATOMIC))) {  in skb_zerocopy()
2974 		skb_tx_error(from);  in skb_zerocopy()
2977 	skb_zerocopy_clone(to, from, GFP_ATOMIC);  in skb_zerocopy()
2979 	for (i = 0; i < skb_shinfo(from)->nr_frags; i++) {  in skb_zerocopy()
2984 		skb_shinfo(to)->frags[j] = skb_shinfo(from)->frags[i];  in skb_zerocopy()
3301 	int from, to, merge, todo;  in skb_shift()  local
3312 	from = 0;  in skb_shift()
3314 	fragfrom = &skb_shinfo(skb)->frags[from];  in skb_shift()
3333 			fragfrom = &skb_shinfo(skb)->frags[from];  in skb_shift()
3343 		from++;  in skb_shift()
3348 	    (skb_shinfo(skb)->nr_frags - from) > (MAX_SKB_FRAGS - to))  in skb_shift()
3354 	while ((todo > 0) && (from < skb_shinfo(skb)->nr_frags)) {  in skb_shift()
3358 		fragfrom = &skb_shinfo(skb)->frags[from];  in skb_shift()
3364 			from++;  in skb_shift()
3395 	while (from < skb_shinfo(skb)->nr_frags)  in skb_shift()
3396 		skb_shinfo(skb)->frags[to++] = skb_shinfo(skb)->frags[from++];  in skb_shift()
3429 void skb_prepare_seq_read(struct sk_buff *skb, unsigned int from,  in skb_prepare_seq_read()  argument
3432 	st->lower_offset = from;  in skb_prepare_seq_read()
3572 unsigned int skb_find_text(struct sk_buff *skb, unsigned int from,  in skb_find_text()  argument
3581 	skb_prepare_seq_read(skb, from, to, TS_SKB_CB(&state));  in skb_find_text()
3584 	return (ret <= to - from ? ret : UINT_MAX);  in skb_find_text()
5026 bool skb_try_coalesce(struct sk_buff *to, struct sk_buff *from,  in skb_try_coalesce()  argument
5030 	int i, delta, len = from->len;  in skb_try_coalesce()
5039 			BUG_ON(skb_copy_bits(from, 0, skb_put(to, len), len));  in skb_try_coalesce()
5045 	from_shinfo = skb_shinfo(from);  in skb_try_coalesce()
5048 	if (skb_zcopy(to) || skb_zcopy(from))  in skb_try_coalesce()
5051 	if (skb_headlen(from) != 0) {  in skb_try_coalesce()
5059 		if (skb_head_is_locked(from))  in skb_try_coalesce()
5062 		delta = from->truesize - SKB_DATA_ALIGN(sizeof(struct sk_buff));  in skb_try_coalesce()
5064 		page = virt_to_head_page(from->head);  in skb_try_coalesce()
5065 		offset = from->data - (unsigned char *)page_address(page);  in skb_try_coalesce()
5068 				   page, offset, skb_headlen(from));  in skb_try_coalesce()
5075 		delta = from->truesize - SKB_TRUESIZE(skb_end_offset(from));  in skb_try_coalesce()
5085 	if (!skb_cloned(from))  in skb_try_coalesce()