diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c index 9506b1e1193f..b6cbda4722d5 100644 --- a/drivers/net/netconsole.c +++ b/drivers/net/netconsole.c @@ -40,6 +40,7 @@ #include #include #include +#include #include #include #include @@ -352,6 +353,47 @@ static void netconsole_skb_pool_flush(struct netconsole_target *nt) skb_queue_purge_reason(&nt->skb_pool, SKB_CONSUMED); } +/* + * Take the IPv6 from ndev and populate local_ip structure in netpoll + */ +static int netcons_take_ipv6(struct netpoll *np, struct net_device *ndev) +{ + char buf[MAC_ADDR_STR_LEN + 1]; + int err = -EDESTADDRREQ; + struct inet6_dev *idev; + + if (!IS_ENABLED(CONFIG_IPV6)) { + np_err(np, "IPv6 is not supported %s, aborting\n", + egress_dev(np, buf, sizeof(buf))); + return -EINVAL; + } + + idev = __in6_dev_get(ndev); + if (idev) { + struct inet6_ifaddr *ifp; + + read_lock_bh(&idev->lock); + list_for_each_entry(ifp, &idev->addr_list, if_list) { + if (!!(ipv6_addr_type(&ifp->addr) & IPV6_ADDR_LINKLOCAL) != + !!(ipv6_addr_type(&np->remote_ip.in6) & IPV6_ADDR_LINKLOCAL)) + continue; + /* Got the IP, let's return */ + np->local_ip.in6 = ifp->addr; + err = 0; + break; + } + read_unlock_bh(&idev->lock); + } + if (err) { + np_err(np, "no IPv6 address for %s, aborting\n", + egress_dev(np, buf, sizeof(buf))); + return err; + } + + np_info(np, "local IPv6 %pI6c\n", &np->local_ip.in6); + return 0; +} + /* * Take the IPv4 from ndev and populate local_ip structure in netpoll */ @@ -448,7 +490,7 @@ static int netcons_netpoll_setup(struct netpoll *np) if (err) goto put; } else { - err = netpoll_take_ipv6(np, ndev); + err = netcons_take_ipv6(np, ndev); if (err) goto put; } diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h index e212cb86a942..7736339f9880 100644 --- a/include/linux/netpoll.h +++ b/include/linux/netpoll.h @@ -74,7 +74,6 @@ void netpoll_zap_completion_queue(void); unsigned int netpoll_get_carrier_timeout(void); void netpoll_wait_carrier(struct netpoll *np, struct net_device *ndev); char *egress_dev(struct netpoll *np, char *buf, size_t bufsz); -int netpoll_take_ipv6(struct netpoll *np, struct net_device *ndev); #ifdef CONFIG_NETPOLL static inline void *netpoll_poll_lock(struct napi_struct *napi) diff --git a/net/core/netpoll.c b/net/core/netpoll.c index 60c3faf9ea94..246aa2bfd780 100644 --- a/net/core/netpoll.c +++ b/net/core/netpoll.c @@ -424,48 +424,6 @@ void netpoll_wait_carrier(struct netpoll *np, struct net_device *ndev) } EXPORT_SYMBOL_GPL(netpoll_wait_carrier); -/* - * Take the IPv6 from ndev and populate local_ip structure in netpoll - */ -int netpoll_take_ipv6(struct netpoll *np, struct net_device *ndev) -{ - char buf[MAC_ADDR_STR_LEN + 1]; - int err = -EDESTADDRREQ; - struct inet6_dev *idev; - - if (!IS_ENABLED(CONFIG_IPV6)) { - np_err(np, "IPv6 is not supported %s, aborting\n", - egress_dev(np, buf, sizeof(buf))); - return -EINVAL; - } - - idev = __in6_dev_get(ndev); - if (idev) { - struct inet6_ifaddr *ifp; - - read_lock_bh(&idev->lock); - list_for_each_entry(ifp, &idev->addr_list, if_list) { - if (!!(ipv6_addr_type(&ifp->addr) & IPV6_ADDR_LINKLOCAL) != - !!(ipv6_addr_type(&np->remote_ip.in6) & IPV6_ADDR_LINKLOCAL)) - continue; - /* Got the IP, let's return */ - np->local_ip.in6 = ifp->addr; - err = 0; - break; - } - read_unlock_bh(&idev->lock); - } - if (err) { - np_err(np, "no IPv6 address for %s, aborting\n", - egress_dev(np, buf, sizeof(buf))); - return err; - } - - np_info(np, "local IPv6 %pI6c\n", &np->local_ip.in6); - return 0; -} -EXPORT_SYMBOL_GPL(netpoll_take_ipv6); - static void rcu_cleanup_netpoll_info(struct rcu_head *rcu_head) { struct netpoll_info *npinfo =