1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (C) ST-Ericsson AB 2010
19 	cfpkt_priv(pkt)->erronous = true;  \
20 	skb_reset_tail_pointer(&pkt->skb); \
40 	return (struct cfpkt_priv_data *) pkt->skb.cb;  in cfpkt_priv()
45 	return cfpkt_priv(pkt)->erronous;  in is_erronous()
50 	return &pkt->skb;  in pkt_to_skb()
61 	cfpkt_priv(pkt)->erronous = false;  in cfpkt_fromnative()
98 	return skb->len > 0;  in cfpkt_more()
105 		memcpy(data, skb->data, len);  in cfpkt_peek_head()
117 		return -EPROTO;  in cfpkt_extr_head()
119 	if (unlikely(len > skb->len)) {  in cfpkt_extr_head()
121 		return -EPROTO;  in cfpkt_extr_head()
127 			return -EPROTO;  in cfpkt_extr_head()
131 	from -= len;  in cfpkt_extr_head()
144 		return -EPROTO;  in cfpkt_extr_trail()
148 		return -EPROTO;  in cfpkt_extr_trail()
150 	if (unlikely(skb->data + len > skb_tail_pointer(skb))) {  in cfpkt_extr_trail()
152 		return -EPROTO;  in cfpkt_extr_trail()
154 	from = skb_tail_pointer(skb) - len;  in cfpkt_extr_trail()
155 	skb_trim(skb, skb->len - len);  in cfpkt_extr_trail()
174 		return -EPROTO;  in cfpkt_add_body()
192 			return -EPROTO;  in cfpkt_add_body()
216 		return -EPROTO;  in cfpkt_add_head()
219 		return -EPROTO;  in cfpkt_add_head()
243 	return skb->len;  in cfpkt_getlen()
252 	 * Checksum should not be used on high-speed interfaces anyway.  in cfpkt_iterate()
255 		return -EPROTO;  in cfpkt_iterate()
256 	if (unlikely(skb_linearize(&pkt->skb) != 0)) {  in cfpkt_iterate()
258 		return -EPROTO;  in cfpkt_iterate()
260 	return iter_func(data, pkt->skb.data, cfpkt_getlen(pkt));  in cfpkt_iterate()
269 		return -EPROTO;  in cfpkt_setlen()
271 	if (likely(len <= skb->len)) {  in cfpkt_setlen()
272 		if (unlikely(skb->data_len))  in cfpkt_setlen()
281 	if (unlikely(!cfpkt_pad_trail(pkt, len - skb->len)))  in cfpkt_setlen()
304 	if (dst->tail + neededtailspace > dst->end) {  in cfpkt_append()
313 		skb_put_data(tmp, dst->data, dstlen);  in cfpkt_append()
317 	skb_put_data(dst, add->data, skb_headlen(add));  in cfpkt_append()
327 	u8 *split = skb->data + pos;  in cfpkt_split()
328 	u16 len2nd = skb_tail_pointer(skb) - split;  in cfpkt_split()
333 	if (skb->data + pos > skb_tail_pointer(skb)) {  in cfpkt_split()
354 	skb2->priority = skb->priority;  in cfpkt_split()
360 	return cfpkt_priv(pkt)->erronous;  in cfpkt_erroneous()
365 	return (struct caif_payload_info *)&pkt_to_skb(pkt)->cb;  in cfpkt_info()
371 	pkt_to_skb(pkt)->priority = prio;  in cfpkt_set_prio()