65 #define np_info(np, fmt, ...)				\  argument
66 	pr_info("%s: " fmt, np->name, ##__VA_ARGS__)
67 #define np_err(np, fmt, ...)				\  argument
68 	pr_err("%s: " fmt, np->name, ##__VA_ARGS__)
69 #define np_notice(np, fmt, ...)				\  argument
70 	pr_notice("%s: " fmt, np->name, ##__VA_ARGS__)
280 static struct sk_buff *find_skb(struct netpoll *np, int len, int reserve)  in find_skb()  argument
295 			netpoll_poll_dev(np->dev);  in find_skb()
318 void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb,  in netpoll_send_skb_on_dev()  argument
328 	npinfo = rcu_dereference_bh(np->dev->npinfo);  in netpoll_send_skb_on_dev()
355 			netpoll_poll_dev(np->dev);  in netpoll_send_skb_on_dev()
373 void netpoll_send_udp(struct netpoll *np, const char *msg, int len)  in netpoll_send_udp()  argument
384 	if (np->ipv6)  in netpoll_send_udp()
389 	total_len = ip_len + LL_RESERVED_SPACE(np->dev);  in netpoll_send_udp()
391 	skb = find_skb(np, total_len + np->dev->needed_tailroom,  in netpoll_send_udp()
402 	udph->source = htons(np->local_port);  in netpoll_send_udp()
403 	udph->dest = htons(np->remote_port);  in netpoll_send_udp()
406 	if (np->ipv6) {  in netpoll_send_udp()
408 		udph->check = csum_ipv6_magic(&np->local_ip.in6,  in netpoll_send_udp()
409 					      &np->remote_ip.in6,  in netpoll_send_udp()
428 		ip6h->saddr = np->local_ip.in6;  in netpoll_send_udp()
429 		ip6h->daddr = np->remote_ip.in6;  in netpoll_send_udp()
436 		udph->check = csum_tcpudp_magic(np->local_ip.ip,  in netpoll_send_udp()
437 						np->remote_ip.ip,  in netpoll_send_udp()
456 		put_unaligned(np->local_ip.ip, &(iph->saddr));  in netpoll_send_udp()
457 		put_unaligned(np->remote_ip.ip, &(iph->daddr));  in netpoll_send_udp()
465 	ether_addr_copy(eth->h_source, np->dev->dev_addr);  in netpoll_send_udp()
466 	ether_addr_copy(eth->h_dest, np->remote_mac);  in netpoll_send_udp()
468 	skb->dev = np->dev;  in netpoll_send_udp()
470 	netpoll_send_skb(np, skb);  in netpoll_send_udp()
474 void netpoll_print_options(struct netpoll *np)  in netpoll_print_options()  argument
476 	np_info(np, "local port %d\n", np->local_port);  in netpoll_print_options()
477 	if (np->ipv6)  in netpoll_print_options()
478 		np_info(np, "local IPv6 address %pI6c\n", &np->local_ip.in6);  in netpoll_print_options()
480 		np_info(np, "local IPv4 address %pI4\n", &np->local_ip.ip);  in netpoll_print_options()
481 	np_info(np, "interface '%s'\n", np->dev_name);  in netpoll_print_options()
482 	np_info(np, "remote port %d\n", np->remote_port);  in netpoll_print_options()
483 	if (np->ipv6)  in netpoll_print_options()
484 		np_info(np, "remote IPv6 address %pI6c\n", &np->remote_ip.in6);  in netpoll_print_options()
486 		np_info(np, "remote IPv4 address %pI4\n", &np->remote_ip.ip);  in netpoll_print_options()
487 	np_info(np, "remote ethernet address %pM\n", np->remote_mac);  in netpoll_print_options()
511 int netpoll_parse_options(struct netpoll *np, char *opt)  in netpoll_parse_options()  argument
521 		if (kstrtou16(cur, 10, &np->local_port))  in netpoll_parse_options()
532 		ipv6 = netpoll_parse_ip_addr(cur, &np->local_ip);  in netpoll_parse_options()
536 			np->ipv6 = (bool)ipv6;  in netpoll_parse_options()
546 		strlcpy(np->dev_name, cur, sizeof(np->dev_name));  in netpoll_parse_options()
557 			np_info(np, "warning: whitespace is not allowed\n");  in netpoll_parse_options()
558 		if (kstrtou16(cur, 10, &np->remote_port))  in netpoll_parse_options()
568 	ipv6 = netpoll_parse_ip_addr(cur, &np->remote_ip);  in netpoll_parse_options()
571 	else if (ipversion_set && np->ipv6 != (bool)ipv6)  in netpoll_parse_options()
574 		np->ipv6 = (bool)ipv6;  in netpoll_parse_options()
579 		if (!mac_pton(cur, np->remote_mac))  in netpoll_parse_options()
583 	netpoll_print_options(np);  in netpoll_parse_options()
588 	np_info(np, "couldn't parse config at '%s'!\n", cur);  in netpoll_parse_options()
593 int __netpoll_setup(struct netpoll *np, struct net_device *ndev)  in __netpoll_setup()  argument
599 	np->dev = ndev;  in __netpoll_setup()
600 	strlcpy(np->dev_name, ndev->name, IFNAMSIZ);  in __netpoll_setup()
601 	INIT_WORK(&np->cleanup_work, netpoll_async_cleanup);  in __netpoll_setup()
605 		np_err(np, "%s doesn't support polling, aborting\n",  in __netpoll_setup()
606 		       np->dev_name);  in __netpoll_setup()
624 		ops = np->dev->netdev_ops;  in __netpoll_setup()
635 	npinfo->netpoll = np;  in __netpoll_setup()
649 int netpoll_setup(struct netpoll *np)  in netpoll_setup()  argument
656 	if (np->dev_name) {  in netpoll_setup()
658 		ndev = __dev_get_by_name(net, np->dev_name);  in netpoll_setup()
661 		np_err(np, "%s doesn't exist, aborting\n", np->dev_name);  in netpoll_setup()
668 		np_err(np, "%s is a slave device, aborting\n", np->dev_name);  in netpoll_setup()
676 		np_info(np, "device %s not up yet, forcing it\n", np->dev_name);  in netpoll_setup()
681 			np_err(np, "failed to open %s\n", ndev->name);  in netpoll_setup()
690 				np_notice(np, "timeout waiting for carrier\n");  in netpoll_setup()
702 			np_notice(np, "carrier detect appears untrustworthy, waiting 4 seconds\n");  in netpoll_setup()
708 	if (!np->local_ip.ip) {  in netpoll_setup()
709 		if (!np->ipv6) {  in netpoll_setup()
713 				np_err(np, "no IP address for %s, aborting\n",  in netpoll_setup()
714 				       np->dev_name);  in netpoll_setup()
719 			np->local_ip.ip = in_dev->ifa_list->ifa_local;  in netpoll_setup()
720 			np_info(np, "local IP %pI4\n", &np->local_ip.ip);  in netpoll_setup()
734 					np->local_ip.in6 = ifp->addr;  in netpoll_setup()
741 				np_err(np, "no IPv6 address for %s, aborting\n",  in netpoll_setup()
742 				       np->dev_name);  in netpoll_setup()
745 				np_info(np, "local IPv6 %pI6c\n", &np->local_ip.in6);  in netpoll_setup()
747 			np_err(np, "IPv6 is not supported %s, aborting\n",  in netpoll_setup()
748 			       np->dev_name);  in netpoll_setup()
758 	err = __netpoll_setup(np, ndev);  in netpoll_setup()
797 void __netpoll_cleanup(struct netpoll *np)  in __netpoll_cleanup()  argument
805 	npinfo = rtnl_dereference(np->dev->npinfo);  in __netpoll_cleanup()
814 		ops = np->dev->netdev_ops;  in __netpoll_cleanup()
816 			ops->ndo_netpoll_cleanup(np->dev);  in __netpoll_cleanup()
818 		RCU_INIT_POINTER(np->dev->npinfo, NULL);  in __netpoll_cleanup()
821 		RCU_INIT_POINTER(np->dev->npinfo, NULL);  in __netpoll_cleanup()
827 	struct netpoll *np = container_of(work, struct netpoll, cleanup_work);  in netpoll_async_cleanup()  local
830 	__netpoll_cleanup(np);  in netpoll_async_cleanup()
832 	kfree(np);  in netpoll_async_cleanup()
835 void __netpoll_free_async(struct netpoll *np)  in __netpoll_free_async()  argument
837 	schedule_work(&np->cleanup_work);  in __netpoll_free_async()
841 void netpoll_cleanup(struct netpoll *np)  in netpoll_cleanup()  argument
844 	if (!np->dev)  in netpoll_cleanup()
846 	__netpoll_cleanup(np);  in netpoll_cleanup()
847 	dev_put(np->dev);  in netpoll_cleanup()
848 	np->dev = NULL;  in netpoll_cleanup()