diff options
| author | Jiri Pirko <jiri@mellanox.com> | 2019-10-03 11:49:28 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-10-04 11:10:56 -0700 |
| commit | 55c894f762a1a99fca80ee55d593083d78e7e4fb (patch) | |
| tree | 39308305a164ac2fbee70f4f110faa552ca0a7c1 /net/ipv6/ip6_fib.c | |
| parent | 7c550daffe22a97282effa75fe7c1f6b83563ecb (diff) | |
| download | linux-55c894f762a1a99fca80ee55d593083d78e7e4fb.tar.bz2 | |
net: fib_notifier: propagate possible error during fib notifier registration
Unlike events for registered notifier, during the registration, the
errors that happened for the block being registered are not propagated
up to the caller. Make sure the error is propagated for FIB rules and
entries.
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_fib.c')
| -rw-r--r-- | net/ipv6/ip6_fib.c | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c index f6fae48b2e18..76124a909395 100644 --- a/net/ipv6/ip6_fib.c +++ b/net/ipv6/ip6_fib.c @@ -403,30 +403,37 @@ struct fib6_dump_arg { struct notifier_block *nb; }; -static void fib6_rt_dump(struct fib6_info *rt, struct fib6_dump_arg *arg) +static int fib6_rt_dump(struct fib6_info *rt, struct fib6_dump_arg *arg) { if (rt == arg->net->ipv6.fib6_null_entry) - return; - call_fib6_entry_notifier(arg->nb, FIB_EVENT_ENTRY_ADD, rt); + return 0; + return call_fib6_entry_notifier(arg->nb, FIB_EVENT_ENTRY_ADD, rt); } static int fib6_node_dump(struct fib6_walker *w) { struct fib6_info *rt; + int err = 0; - for_each_fib6_walker_rt(w) - fib6_rt_dump(rt, w->args); + for_each_fib6_walker_rt(w) { + err = fib6_rt_dump(rt, w->args); + if (err) + break; + } w->leaf = NULL; - return 0; + return err; } -static void fib6_table_dump(struct net *net, struct fib6_table *tb, - struct fib6_walker *w) +static int fib6_table_dump(struct net *net, struct fib6_table *tb, + struct fib6_walker *w) { + int err; + w->root = &tb->tb6_root; spin_lock_bh(&tb->tb6_lock); - fib6_walk(net, w); + err = fib6_walk(net, w); spin_unlock_bh(&tb->tb6_lock); + return err; } /* Called with rcu_read_lock() */ @@ -435,6 +442,7 @@ int fib6_tables_dump(struct net *net, struct notifier_block *nb) struct fib6_dump_arg arg; struct fib6_walker *w; unsigned int h; + int err = 0; w = kzalloc(sizeof(*w), GFP_ATOMIC); if (!w) @@ -449,13 +457,17 @@ int fib6_tables_dump(struct net *net, struct notifier_block *nb) struct hlist_head *head = &net->ipv6.fib_table_hash[h]; struct fib6_table *tb; - hlist_for_each_entry_rcu(tb, head, tb6_hlist) - fib6_table_dump(net, tb, w); + hlist_for_each_entry_rcu(tb, head, tb6_hlist) { + err = fib6_table_dump(net, tb, w); + if (err < 0) + goto out; + } } +out: kfree(w); - return 0; + return err; } static int fib6_dump_node(struct fib6_walker *w) |