2578 int skb_store_bits(struct sk_buff *skb, int offset, const void *from, int len)  in skb_store_bits()  argument
2590 		skb_copy_to_linear_data_offset(skb, offset, from, copy);  in skb_store_bits()
2594 		from += copy;  in skb_store_bits()
2616 				memcpy(vaddr + p_off, from + copied, p_len);  in skb_store_bits()
2623 			from += copy;  in skb_store_bits()
2638 					   from, copy))  in skb_store_bits()
2643 			from += copy;  in skb_store_bits()
2931 skb_zerocopy_headlen(const struct sk_buff *from)  in skb_zerocopy_headlen()  argument
2935 	if (!from->head_frag ||  in skb_zerocopy_headlen()
2936 	    skb_headlen(from) < L1_CACHE_BYTES ||  in skb_zerocopy_headlen()
2937 	    skb_shinfo(from)->nr_frags >= MAX_SKB_FRAGS) {  in skb_zerocopy_headlen()
2938 		hlen = skb_headlen(from);  in skb_zerocopy_headlen()
2940 			hlen = from->len;  in skb_zerocopy_headlen()
2943 	if (skb_has_frag_list(from))  in skb_zerocopy_headlen()
2944 		hlen = from->len;  in skb_zerocopy_headlen()
2969 skb_zerocopy(struct sk_buff *to, struct sk_buff *from, int len, int hlen)  in skb_zerocopy()  argument
2977 	BUG_ON(!from->head_frag && !hlen);  in skb_zerocopy()
2981 		return skb_copy_bits(from, 0, skb_put(to, len), len);  in skb_zerocopy()
2984 		ret = skb_copy_bits(from, 0, skb_put(to, hlen), hlen);  in skb_zerocopy()
2989 		plen = min_t(int, skb_headlen(from), len);  in skb_zerocopy()
2991 			page = virt_to_head_page(from->head);  in skb_zerocopy()
2992 			offset = from->data - (unsigned char *)page_address(page);  in skb_zerocopy()
3004 	if (unlikely(skb_orphan_frags(from, GFP_ATOMIC))) {  in skb_zerocopy()
3005 		skb_tx_error(from);  in skb_zerocopy()
3008 	skb_zerocopy_clone(to, from, GFP_ATOMIC);  in skb_zerocopy()
3010 	for (i = 0; i < skb_shinfo(from)->nr_frags; i++) {  in skb_zerocopy()
3015 		skb_shinfo(to)->frags[j] = skb_shinfo(from)->frags[i];  in skb_zerocopy()
3344 	int from, to, merge, todo;  in skb_shift()  local
3355 	from = 0;  in skb_shift()
3357 	fragfrom = &skb_shinfo(skb)->frags[from];  in skb_shift()
3376 			fragfrom = &skb_shinfo(skb)->frags[from];  in skb_shift()
3386 		from++;  in skb_shift()
3391 	    (skb_shinfo(skb)->nr_frags - from) > (MAX_SKB_FRAGS - to))  in skb_shift()
3397 	while ((todo > 0) && (from < skb_shinfo(skb)->nr_frags)) {  in skb_shift()
3401 		fragfrom = &skb_shinfo(skb)->frags[from];  in skb_shift()
3407 			from++;  in skb_shift()
3438 	while (from < skb_shinfo(skb)->nr_frags)  in skb_shift()
3439 		skb_shinfo(skb)->frags[to++] = skb_shinfo(skb)->frags[from++];  in skb_shift()
3472 void skb_prepare_seq_read(struct sk_buff *skb, unsigned int from,  in skb_prepare_seq_read()  argument
3475 	st->lower_offset = from;  in skb_prepare_seq_read()
3615 unsigned int skb_find_text(struct sk_buff *skb, unsigned int from,  in skb_find_text()  argument
3624 	skb_prepare_seq_read(skb, from, to, TS_SKB_CB(&state));  in skb_find_text()
3627 	return (ret <= to - from ? ret : UINT_MAX);  in skb_find_text()
5199 bool skb_try_coalesce(struct sk_buff *to, struct sk_buff *from,  in skb_try_coalesce()  argument
5203 	int i, delta, len = from->len;  in skb_try_coalesce()
5212 			BUG_ON(skb_copy_bits(from, 0, skb_put(to, len), len));  in skb_try_coalesce()
5218 	from_shinfo = skb_shinfo(from);  in skb_try_coalesce()
5221 	if (skb_zcopy(to) || skb_zcopy(from))  in skb_try_coalesce()
5224 	if (skb_headlen(from) != 0) {  in skb_try_coalesce()
5232 		if (skb_head_is_locked(from))  in skb_try_coalesce()
5235 		delta = from->truesize - SKB_DATA_ALIGN(sizeof(struct sk_buff));  in skb_try_coalesce()
5237 		page = virt_to_head_page(from->head);  in skb_try_coalesce()
5238 		offset = from->data - (unsigned char *)page_address(page);  in skb_try_coalesce()
5241 				   page, offset, skb_headlen(from));  in skb_try_coalesce()
5248 		delta = from->truesize - SKB_TRUESIZE(skb_end_offset(from));  in skb_try_coalesce()
5258 	if (!skb_cloned(from))  in skb_try_coalesce()