From d5382fef70ce273608d6fc652c24f075de3737ef Mon Sep 17 00:00:00 2001 From: Ido Schimmel Date: Tue, 18 Jun 2019 18:12:57 +0300 Subject: [PATCH] ipv6: Stop sending in-kernel notifications for each nexthop Both listeners - mlxsw and netdevsim - of IPv6 FIB notifications are now ready to handle IPv6 multipath notifications. Therefore, stop ignoring such notifications in both drivers and stop sending notification for each added / deleted nexthop. v2: * Remove 'multipath_rt' from 'struct fib6_entry_notifier_info' Signed-off-by: Ido Schimmel Acked-by: Jiri Pirko Reviewed-by: David Ahern Signed-off-by: David S. Miller --- .../net/ethernet/mellanox/mlxsw/spectrum_router.c | 2 -- drivers/net/netdevsim/fib.c | 7 ------ include/net/ip6_fib.h | 1 - net/ipv6/ip6_fib.c | 29 +++++++++++++--------- 4 files changed, 17 insertions(+), 22 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c index 92ec651..e618be7 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c @@ -6294,8 +6294,6 @@ static int mlxsw_sp_router_fib_event(struct notifier_block *nb, NL_SET_ERR_MSG_MOD(info->extack, "IPv6 route with nexthop objects is not supported"); return notifier_from_errno(-EINVAL); } - if (fen6_info->multipath_rt) - return NOTIFY_DONE; } break; } diff --git a/drivers/net/netdevsim/fib.c b/drivers/net/netdevsim/fib.c index 83ba511..8c57ba7 100644 --- a/drivers/net/netdevsim/fib.c +++ b/drivers/net/netdevsim/fib.c @@ -190,13 +190,6 @@ static int nsim_fib_event_nb(struct notifier_block *nb, unsigned long event, case FIB_EVENT_ENTRY_ADD: /* fall through */ case FIB_EVENT_ENTRY_DEL: - if (info->family == AF_INET6) { - struct fib6_entry_notifier_info *fen6_info = ptr; - - if (fen6_info->multipath_rt) - return NOTIFY_DONE; - } - err = nsim_fib_event(data, info, event == FIB_EVENT_ENTRY_ADD); break; diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h index 7c3d5ab0..87331f2 100644 --- a/include/net/ip6_fib.h +++ b/include/net/ip6_fib.h @@ -378,7 +378,6 @@ struct fib6_entry_notifier_info { struct fib_notifier_info info; /* must be first */ struct fib6_info *rt; unsigned int nsiblings; - bool multipath_rt; }; /* diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c index df08ba8..1d16a01 100644 --- a/net/ipv6/ip6_fib.c +++ b/net/ipv6/ip6_fib.c @@ -391,7 +391,6 @@ int call_fib6_multipath_entry_notifiers(struct net *net, .info.extack = extack, .rt = rt, .nsiblings = nsiblings, - .multipath_rt = true, }; rt->fib6_table->fib_seq++; @@ -1140,11 +1139,13 @@ next_iter: add: nlflags |= NLM_F_CREATE; - err = call_fib6_entry_notifiers(info->nl_net, - FIB_EVENT_ENTRY_ADD, - rt, extack); - if (err) - return err; + if (!info->skip_notify_kernel) { + err = call_fib6_entry_notifiers(info->nl_net, + FIB_EVENT_ENTRY_ADD, + rt, extack); + if (err) + return err; + } rcu_assign_pointer(rt->fib6_next, iter); fib6_info_hold(rt); @@ -1169,11 +1170,13 @@ add: return -ENOENT; } - err = call_fib6_entry_notifiers(info->nl_net, - FIB_EVENT_ENTRY_REPLACE, - rt, extack); - if (err) - return err; + if (!info->skip_notify_kernel) { + err = call_fib6_entry_notifiers(info->nl_net, + FIB_EVENT_ENTRY_REPLACE, + rt, extack); + if (err) + return err; + } fib6_info_hold(rt); rcu_assign_pointer(rt->fib6_node, fn); @@ -1856,9 +1859,11 @@ static void fib6_del_route(struct fib6_table *table, struct fib6_node *fn, fib6_purge_rt(rt, fn, net); - call_fib6_entry_notifiers(net, FIB_EVENT_ENTRY_DEL, rt, NULL); + if (!info->skip_notify_kernel) + call_fib6_entry_notifiers(net, FIB_EVENT_ENTRY_DEL, rt, NULL); if (!info->skip_notify) inet6_rt_notify(RTM_DELROUTE, rt, info, 0); + fib6_info_release(rt); } -- 2.7.4