Add expires to rt6_info for FIB entries, and add fib6 helpers to manage it. Data path use of dst.expires remains.
Signed-off-by: David Ahern <dsah...@gmail.com> --- include/net/ip6_fib.h | 26 +++++++++++++++++++++----- net/ipv6/addrconf.c | 6 +++--- net/ipv6/ip6_fib.c | 8 ++++---- net/ipv6/ndisc.c | 2 +- net/ipv6/route.c | 14 +++++++------- 5 files changed, 36 insertions(+), 20 deletions(-) diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h index da81669b9c90..3ba0bb7c7a43 100644 --- a/include/net/ip6_fib.h +++ b/include/net/ip6_fib.h @@ -179,6 +179,7 @@ struct rt6_info { should_flush:1, unused:6; + unsigned long expires; struct dst_metrics *fib6_metrics; #define fib6_pmtu fib6_metrics->metrics[RTAX_MTU-1] #define fib6_hoplimit fib6_metrics->metrics[RTAX_HOPLIMIT-1] @@ -199,6 +200,26 @@ static inline struct inet6_dev *ip6_dst_idev(struct dst_entry *dst) return ((struct rt6_info *)dst)->rt6i_idev; } +static inline void fib6_clean_expires(struct rt6_info *f6i) +{ + f6i->rt6i_flags &= ~RTF_EXPIRES; + f6i->expires = 0; +} + +static inline void fib6_set_expires(struct rt6_info *f6i, + unsigned long expires) +{ + f6i->expires = expires; + f6i->rt6i_flags |= RTF_EXPIRES; +} + +static inline bool fib6_check_expired(const struct rt6_info *f6i) +{ + if (f6i->rt6i_flags & RTF_EXPIRES) + return time_after(jiffies, f6i->expires); + return false; +} + static inline void rt6_clean_expires(struct rt6_info *rt) { rt->rt6i_flags &= ~RTF_EXPIRES; @@ -213,11 +234,6 @@ static inline void rt6_set_expires(struct rt6_info *rt, unsigned long expires) static inline void rt6_update_expires(struct rt6_info *rt0, int timeout) { - struct rt6_info *rt; - - for (rt = rt0; rt && !(rt->rt6i_flags & RTF_EXPIRES); rt = rt->from); - if (rt && rt != rt0) - rt0->dst.expires = rt->dst.expires; dst_set_expires(&rt0->dst, timeout); rt0->rt6i_flags |= RTF_EXPIRES; } diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index eeecef2b83a4..478f45bf13cf 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -1202,7 +1202,7 @@ cleanup_prefix_route(struct inet6_ifaddr *ifp, unsigned long expires, bool del_r ip6_del_rt(dev_net(ifp->idev->dev), rt); else { if (!(rt->rt6i_flags & RTF_EXPIRES)) - rt6_set_expires(rt, expires); + fib6_set_expires(rt, expires); ip6_rt_put(rt); } } @@ -2648,9 +2648,9 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len, bool sllao) rt = NULL; } else if (addrconf_finite_timeout(rt_expires)) { /* not infinity */ - rt6_set_expires(rt, jiffies + rt_expires); + fib6_set_expires(rt, jiffies + rt_expires); } else { - rt6_clean_expires(rt); + fib6_clean_expires(rt); } } else if (valid_lft) { clock_t expires = 0; diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c index faa2b46349df..7bc23b048189 100644 --- a/net/ipv6/ip6_fib.c +++ b/net/ipv6/ip6_fib.c @@ -886,9 +886,9 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct rt6_info *rt, if (!(iter->rt6i_flags & RTF_EXPIRES)) return -EEXIST; if (!(rt->rt6i_flags & RTF_EXPIRES)) - rt6_clean_expires(iter); + fib6_clean_expires(iter); else - rt6_set_expires(iter, rt->dst.expires); + fib6_set_expires(iter, rt->expires); iter->fib6_pmtu = rt->fib6_pmtu; return -EEXIST; } @@ -1975,8 +1975,8 @@ static int fib6_age(struct rt6_info *rt, void *arg) * Routes are expired even if they are in use. */ - if (rt->rt6i_flags & RTF_EXPIRES && rt->dst.expires) { - if (time_after(now, rt->dst.expires)) { + if (rt->rt6i_flags & RTF_EXPIRES && rt->expires) { + if (time_after(now, rt->expires)) { RT6_TRACE("expiring %p\n", rt); return -1; } diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 33f9e3dc526a..bd804e8cd73c 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1318,7 +1318,7 @@ static void ndisc_router_discovery(struct sk_buff *skb) } if (rt) - rt6_set_expires(rt, jiffies + (HZ * lifetime)); + fib6_set_expires(rt, jiffies + (HZ * lifetime)); if (in6_dev->cnf.accept_ra_min_hop_limit < 256 && ra_msg->icmph.icmp6_hop_limit) { if (in6_dev->cnf.accept_ra_min_hop_limit <= ra_msg->icmph.icmp6_hop_limit) { diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 1649e78b019d..b6206ec947e6 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -435,7 +435,7 @@ static bool rt6_check_expired(const struct rt6_info *rt) return true; } else if (rt->from) { return rt->dst.obsolete != DST_OBSOLETE_FORCE_CHK || - rt6_check_expired(rt->from); + fib6_check_expired(rt->from); } return false; } @@ -685,7 +685,7 @@ static struct rt6_info *find_match(struct rt6_info *rt, int oif, int strict, !(strict & RT6_LOOKUP_F_IGNORE_LINKSTATE)) goto out; - if (rt6_check_expired(rt)) + if (fib6_check_expired(rt)) goto out; m = rt6_score_route(rt, oif, strict); @@ -869,9 +869,9 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len, if (rt) { if (!addrconf_finite_timeout(lifetime)) - rt6_clean_expires(rt); + fib6_clean_expires(rt); else - rt6_set_expires(rt, jiffies + HZ * lifetime); + fib6_set_expires(rt, jiffies + HZ * lifetime); ip6_rt_put(rt); } @@ -2266,7 +2266,7 @@ static struct rt6_info *__ip6_route_redirect(struct net *net, for_each_fib6_node_rt_rcu(fn) { if (rt->fib6_nh.nh_flags & RTNH_F_DEAD) continue; - if (rt6_check_expired(rt)) + if (fib6_check_expired(rt)) continue; if (rt->rt6i_flags & RTF_REJECT) break; @@ -2718,10 +2718,10 @@ static struct rt6_info *ip6_route_info_create(struct fib6_config *cfg, goto out; if (cfg->fc_flags & RTF_EXPIRES) - rt6_set_expires(rt, jiffies + + fib6_set_expires(rt, jiffies + clock_t_to_jiffies(cfg->fc_expires)); else - rt6_clean_expires(rt); + fib6_clean_expires(rt); if (cfg->fc_protocol == RTPROT_UNSPEC) cfg->fc_protocol = RTPROT_BOOT; -- 2.11.0