diff options
| -rw-r--r-- | include/net/ipv6.h | 9 | ||||
| -rw-r--r-- | net/ipv6/addrconf.c | 3 | ||||
| -rw-r--r-- | net/ipv6/ndisc.c | 16 |
3 files changed, 12 insertions, 16 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h index acbd8e03431..5af66b26ebd 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -271,6 +271,15 @@ struct ipv6_txoptions *ipv6_fixup_options(struct ipv6_txoptions *opt_space, extern bool ipv6_opt_accepted(const struct sock *sk, const struct sk_buff *skb); +static inline bool ipv6_accept_ra(struct inet6_dev *idev) +{ + /* If forwarding is enabled, RA are not accepted unless the special + * hybrid mode (accept_ra=2) is enabled. + */ + return idev->cnf.forwarding ? idev->cnf.accept_ra == 2 : + idev->cnf.accept_ra; +} + #if IS_ENABLED(CONFIG_IPV6) static inline int ip6_frag_nqueues(struct net *net) { diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index fc0e13ad633..4b644f656c4 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -3150,8 +3150,7 @@ static void addrconf_dad_completed(struct inet6_ifaddr *ifp) router advertisements, start sending router solicitations. */ - if (((ifp->idev->cnf.accept_ra == 1 && !ifp->idev->cnf.forwarding) || - ifp->idev->cnf.accept_ra == 2) && + if (ipv6_accept_ra(ifp->idev) && ifp->idev->cnf.rtr_solicits > 0 && (dev->flags&IFF_LOOPBACK) == 0 && (ipv6_addr_type(&ifp->addr) & IPV6_ADDR_LINKLOCAL)) { diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index f41853bca42..cf43b6550f5 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1032,18 +1032,6 @@ errout: rtnl_set_sk_err(net, RTNLGRP_ND_USEROPT, err); } -static inline int accept_ra(struct inet6_dev *in6_dev) -{ - /* - * If forwarding is enabled, RA are not accepted unless the special - * hybrid mode (accept_ra=2) is enabled. - */ - if (in6_dev->cnf.forwarding && in6_dev->cnf.accept_ra < 2) - return 0; - - return in6_dev->cnf.accept_ra; -} - static void ndisc_router_discovery(struct sk_buff *skb) { struct ra_msg *ra_msg = (struct ra_msg *)skb_transport_header(skb); @@ -1091,7 +1079,7 @@ static void ndisc_router_discovery(struct sk_buff *skb) return; } - if (!accept_ra(in6_dev)) + if (!ipv6_accept_ra(in6_dev)) goto skip_linkparms; #ifdef CONFIG_IPV6_NDISC_NODETYPE @@ -1247,7 +1235,7 @@ skip_linkparms: NEIGH_UPDATE_F_ISROUTER); } - if (!accept_ra(in6_dev)) + if (!ipv6_accept_ra(in6_dev)) goto out; #ifdef CONFIG_IPV6_ROUTE_INFO |