81 static int xfrm_rcv_cb(struct sk_buff *skb, unsigned int family, u8 protocol,  in xfrm_rcv_cb()  argument
90 	ret = afinfo->callback(skb, protocol, err);  in xfrm_rcv_cb()
128 int xfrm_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq)  in xfrm_parse_spi()  argument
145 		if (!pskb_may_pull(skb, sizeof(struct ip_comp_hdr)))  in xfrm_parse_spi()
147 		*spi = htonl(ntohs(*(__be16 *)(skb_transport_header(skb) + 2)));  in xfrm_parse_spi()
154 	if (!pskb_may_pull(skb, hlen))  in xfrm_parse_spi()
157 	*spi = *(__be32 *)(skb_transport_header(skb) + offset);  in xfrm_parse_spi()
158 	*seq = *(__be32 *)(skb_transport_header(skb) + offset_seq);  in xfrm_parse_spi()
162 int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb)  in xfrm_prepare_input()  argument
167 	err = x->outer_mode->afinfo->extract_input(x, skb);  in xfrm_prepare_input()
172 		inner_mode = xfrm_ip2inner_mode(x, XFRM_MODE_SKB_CB(skb)->protocol);  in xfrm_prepare_input()
177 	skb->protocol = inner_mode->afinfo->eth_proto;  in xfrm_prepare_input()
178 	return inner_mode->input2(x, skb);  in xfrm_prepare_input()
182 int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)  in xfrm_input()  argument
184 	struct net *net = dev_net(skb->dev);  in xfrm_input()
191 	u32 mark = skb->mark;  in xfrm_input()
199 		x = xfrm_input_state(skb);  in xfrm_input()
200 		seq = XFRM_SKB_CB(skb)->seq.input.low;  in xfrm_input()
205 	daddr = (xfrm_address_t *)(skb_network_header(skb) +  in xfrm_input()
206 				   XFRM_SPI_SKB_CB(skb)->daddroff);  in xfrm_input()
207 	family = XFRM_SPI_SKB_CB(skb)->family;  in xfrm_input()
210 	if (XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4) {  in xfrm_input()
213 			mark = be32_to_cpu(XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip4->parms.i_key);  in xfrm_input()
216 			mark = be32_to_cpu(XFRM_TUNNEL_SKB_CB(skb)->tunnel.ip6->parms.i_key);  in xfrm_input()
222 	if (!skb->sp || atomic_read(&skb->sp->refcnt) != 1) {  in xfrm_input()
225 		sp = secpath_dup(skb->sp);  in xfrm_input()
230 		if (skb->sp)  in xfrm_input()
231 			secpath_put(skb->sp);  in xfrm_input()
232 		skb->sp = sp;  in xfrm_input()
236 	if (!spi && (err = xfrm_parse_spi(skb, nexthdr, &spi, &seq)) != 0) {  in xfrm_input()
242 		if (skb->sp->len == XFRM_MAX_DEPTH) {  in xfrm_input()
250 			xfrm_audit_state_notfound(skb, family, spi, seq);  in xfrm_input()
254 		skb->sp->xvec[skb->sp->len++] = x;  in xfrm_input()
272 		if (x->repl->check(x, skb, seq)) {  in xfrm_input()
284 		if (xfrm_tunnel_check(skb, x, family)) {  in xfrm_input()
291 		XFRM_SKB_CB(skb)->seq.input.low = seq;  in xfrm_input()
292 		XFRM_SKB_CB(skb)->seq.input.hi = seq_hi;  in xfrm_input()
294 		skb_dst_force(skb);  in xfrm_input()
296 		nexthdr = x->type->input(x, skb);  in xfrm_input()
304 				xfrm_audit_state_icvfail(x, skb,  in xfrm_input()
315 		if (async && x->repl->recheck(x, skb, seq)) {  in xfrm_input()
322 		x->curlft.bytes += skb->len;  in xfrm_input()
327 		XFRM_MODE_SKB_CB(skb)->protocol = nexthdr;  in xfrm_input()
332 			inner_mode = xfrm_ip2inner_mode(x, XFRM_MODE_SKB_CB(skb)->protocol);  in xfrm_input()
337 		if (inner_mode->input(x, skb)) {  in xfrm_input()
354 		err = xfrm_parse_spi(skb, nexthdr, &spi, &seq);  in xfrm_input()
361 	err = xfrm_rcv_cb(skb, family, x->type->proto, 0);  in xfrm_input()
365 	nf_reset(skb);  in xfrm_input()
368 		skb_dst_drop(skb);  in xfrm_input()
369 		netif_rx(skb);  in xfrm_input()
372 		return x->inner_mode->afinfo->transport_finish(skb, async);  in xfrm_input()
378 	xfrm_rcv_cb(skb, family, x && x->type ? x->type->proto : nexthdr, -1);  in xfrm_input()
379 	kfree_skb(skb);  in xfrm_input()
384 int xfrm_input_resume(struct sk_buff *skb, int nexthdr)  in xfrm_input_resume()  argument
386 	return xfrm_input(skb, nexthdr, 0, -1);  in xfrm_input_resume()