32 static void skb_debug(const struct sk_buff *skb)  in skb_debug()  argument
37 		       16, 1, skb->data, min(NUM2PRINT, skb->len), true);  in skb_debug()
69 	void (*old_push)(struct atm_vcc *vcc, struct sk_buff *skb);
70 	void (*old_pop)(struct atm_vcc *vcc, struct sk_buff *skb);
184 static void br2684_pop(struct atm_vcc *vcc, struct sk_buff *skb)  in br2684_pop()  argument
189 	brvcc->old_pop(vcc, skb);  in br2684_pop()
201 static int br2684_xmit_vcc(struct sk_buff *skb, struct net_device *dev,  in br2684_xmit_vcc()  argument
211 	if (skb_headroom(skb) < minheadroom) {  in br2684_xmit_vcc()
212 		struct sk_buff *skb2 = skb_realloc_headroom(skb, minheadroom);  in br2684_xmit_vcc()
214 		dev_kfree_skb(skb);  in br2684_xmit_vcc()
219 		skb = skb2;  in br2684_xmit_vcc()
224 			skb_push(skb, sizeof(llc_oui_pid_pad));  in br2684_xmit_vcc()
225 			skb_copy_to_linear_data(skb, llc_oui_pid_pad,  in br2684_xmit_vcc()
228 			unsigned short prot = ntohs(skb->protocol);  in br2684_xmit_vcc()
230 			skb_push(skb, sizeof(llc_oui_ipv4));  in br2684_xmit_vcc()
233 				skb_copy_to_linear_data(skb, llc_oui_ipv4,  in br2684_xmit_vcc()
237 				skb_copy_to_linear_data(skb, llc_oui_ipv6,  in br2684_xmit_vcc()
241 				dev_kfree_skb(skb);  in br2684_xmit_vcc()
247 			skb_push(skb, 2);  in br2684_xmit_vcc()
248 			memset(skb->data, 0, 2);  in br2684_xmit_vcc()
251 	skb_debug(skb);  in br2684_xmit_vcc()
253 	ATM_SKB(skb)->vcc = atmvcc = brvcc->atmvcc;  in br2684_xmit_vcc()
254 	pr_debug("atm_skb(%p)->vcc(%p)->dev(%p)\n", skb, atmvcc, atmvcc->dev);  in br2684_xmit_vcc()
255 	atomic_add(skb->truesize, &sk_atm(atmvcc)->sk_wmem_alloc);  in br2684_xmit_vcc()
256 	ATM_SKB(skb)->atm_options = atmvcc->atm_options;  in br2684_xmit_vcc()
258 	dev->stats.tx_bytes += skb->len;  in br2684_xmit_vcc()
271 	return !atmvcc->send(atmvcc, skb);  in br2684_xmit_vcc()
285 static inline struct br2684_vcc *pick_outgoing_vcc(const struct sk_buff *skb,  in pick_outgoing_vcc()  argument
291 static netdev_tx_t br2684_start_xmit(struct sk_buff *skb,  in br2684_start_xmit()  argument
299 	pr_debug("skb_dst(skb)=%p\n", skb_dst(skb));  in br2684_start_xmit()
301 	brvcc = pick_outgoing_vcc(skb, brdev);  in br2684_start_xmit()
307 		dev_kfree_skb(skb);  in br2684_start_xmit()
318 		dev_kfree_skb(skb);  in br2684_start_xmit()
328 	if (!br2684_xmit_vcc(skb, dev, brvcc)) {  in br2684_start_xmit()
391 packet_fails_filter(__be16 type, struct br2684_vcc *brvcc, struct sk_buff *skb)  in packet_fails_filter()  argument
396 	    (((struct iphdr *)(skb->data))->daddr & brvcc->filter.  in packet_fails_filter()
423 static void br2684_push(struct atm_vcc *atmvcc, struct sk_buff *skb)  in br2684_push()  argument
431 	if (unlikely(skb == NULL)) {  in br2684_push()
444 	skb_debug(skb);  in br2684_push()
445 	atm_return(atmvcc, skb->truesize);  in br2684_push()
449 		if (skb->len > 7 && skb->data[7] == 0x01)  in br2684_push()
450 			__skb_trim(skb, skb->len - 4);  in br2684_push()
453 		if ((skb->len >= (sizeof(llc_oui_ipv4))) &&  in br2684_push()
454 		    (memcmp(skb->data, llc_oui_ipv4,  in br2684_push()
456 			if (memcmp(skb->data + 6, ethertype_ipv6,  in br2684_push()
458 				skb->protocol = htons(ETH_P_IPV6);  in br2684_push()
459 			else if (memcmp(skb->data + 6, ethertype_ipv4,  in br2684_push()
461 				skb->protocol = htons(ETH_P_IP);  in br2684_push()
464 			skb_pull(skb, sizeof(llc_oui_ipv4));  in br2684_push()
465 			skb_reset_network_header(skb);  in br2684_push()
466 			skb->pkt_type = PACKET_HOST;  in br2684_push()
472 		} else if ((skb->len >= sizeof(llc_oui_pid_pad)) &&  in br2684_push()
473 			   (memcmp(skb->data, llc_oui_pid_pad, 7) == 0)) {  in br2684_push()
474 			skb_pull(skb, sizeof(llc_oui_pid_pad));  in br2684_push()
475 			skb->protocol = eth_type_trans(skb, net_dev);  in br2684_push()
483 			skb_reset_network_header(skb);  in br2684_push()
484 			iph = ip_hdr(skb);  in br2684_push()
486 				skb->protocol = htons(ETH_P_IP);  in br2684_push()
488 				skb->protocol = htons(ETH_P_IPV6);  in br2684_push()
491 			skb->pkt_type = PACKET_HOST;  in br2684_push()
494 			if (memcmp(skb->data, pad, BR2684_PAD_LEN) != 0)  in br2684_push()
496 			skb_pull(skb, BR2684_PAD_LEN);  in br2684_push()
497 			skb->protocol = eth_type_trans(skb, net_dev);  in br2684_push()
502 	if (unlikely(packet_fails_filter(skb->protocol, brvcc, skb)))  in br2684_push()
505 	skb->dev = net_dev;  in br2684_push()
506 	ATM_SKB(skb)->vcc = atmvcc;	/* needed ? */  in br2684_push()
507 	pr_debug("received packet's protocol: %x\n", ntohs(skb->protocol));  in br2684_push()
508 	skb_debug(skb);  in br2684_push()
513 	net_dev->stats.rx_bytes += skb->len;  in br2684_push()
514 	memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));  in br2684_push()
515 	netif_rx(skb);  in br2684_push()
524 	dev_kfree_skb(skb);  in br2684_push()