80 static struct cfpkt *cfpkt_create_pfx(u16 len, u16 pfx)  in cfpkt_create_pfx()  argument
85 		skb = alloc_skb(len + pfx, GFP_ATOMIC);  in cfpkt_create_pfx()
87 		skb = alloc_skb(len + pfx, GFP_KERNEL);  in cfpkt_create_pfx()
96 inline struct cfpkt *cfpkt_create(u16 len)  in cfpkt_create()  argument
98 	return cfpkt_create_pfx(len + PKT_POSTFIX, PKT_PREFIX);  in cfpkt_create()
110 	return skb->len > 0;  in cfpkt_more()
113 int cfpkt_peek_head(struct cfpkt *pkt, void *data, u16 len)  in cfpkt_peek_head()  argument
116 	if (skb_headlen(skb) >= len) {  in cfpkt_peek_head()
117 		memcpy(data, skb->data, len);  in cfpkt_peek_head()
120 	return !cfpkt_extr_head(pkt, data, len) &&  in cfpkt_peek_head()
121 	    !cfpkt_add_head(pkt, data, len);  in cfpkt_peek_head()
124 int cfpkt_extr_head(struct cfpkt *pkt, void *data, u16 len)  in cfpkt_extr_head()  argument
131 	if (unlikely(len > skb->len)) {  in cfpkt_extr_head()
136 	if (unlikely(len > skb_headlen(skb))) {  in cfpkt_extr_head()
142 	from = skb_pull(skb, len);  in cfpkt_extr_head()
143 	from -= len;  in cfpkt_extr_head()
145 		memcpy(data, from, len);  in cfpkt_extr_head()
150 int cfpkt_extr_trail(struct cfpkt *pkt, void *dta, u16 len)  in cfpkt_extr_trail()  argument
162 	if (unlikely(skb->data + len > skb_tail_pointer(skb))) {  in cfpkt_extr_trail()
166 	from = skb_tail_pointer(skb) - len;  in cfpkt_extr_trail()
167 	skb_trim(skb, skb->len - len);  in cfpkt_extr_trail()
168 	memcpy(data, from, len);  in cfpkt_extr_trail()
172 int cfpkt_pad_trail(struct cfpkt *pkt, u16 len)  in cfpkt_pad_trail()  argument
174 	return cfpkt_add_body(pkt, NULL, len);  in cfpkt_pad_trail()
177 int cfpkt_add_body(struct cfpkt *pkt, const void *data, u16 len)  in cfpkt_add_body()  argument
191 	if (unlikely(skb_tailroom(skb) < len)) {  in cfpkt_add_body()
192 		if (likely(len < PKT_LEN_WHEN_EXTENDING))  in cfpkt_add_body()
195 			addlen = len;  in cfpkt_add_body()
209 	to = pskb_put(skb, lastskb, len);  in cfpkt_add_body()
211 		memcpy(to, data, len);  in cfpkt_add_body()
220 int cfpkt_add_head(struct cfpkt *pkt, const void *data2, u16 len)  in cfpkt_add_head()  argument
229 	if (unlikely(skb_headroom(skb) < len)) {  in cfpkt_add_head()
241 	to = skb_push(skb, len);  in cfpkt_add_head()
242 	memcpy(to, data, len);  in cfpkt_add_head()
247 inline int cfpkt_add_trail(struct cfpkt *pkt, const void *data, u16 len)  in cfpkt_add_trail()  argument
249 	return cfpkt_add_body(pkt, data, len);  in cfpkt_add_trail()
255 	return skb->len;  in cfpkt_getlen()
275 int cfpkt_setlen(struct cfpkt *pkt, u16 len)  in cfpkt_setlen()  argument
283 	if (likely(len <= skb->len)) {  in cfpkt_setlen()
285 			___pskb_trim(skb, len);  in cfpkt_setlen()
287 			skb_trim(skb, len);  in cfpkt_setlen()
293 	if (unlikely(!cfpkt_pad_trail(pkt, len - skb->len)))  in cfpkt_setlen()
328 		tmp->len = dstlen;  in cfpkt_append()
336 	dst->len += addlen;  in cfpkt_append()
369 	skb->len = pos;  in cfpkt_split()
373 	skb2->len += len2nd;  in cfpkt_split()