diff options
| author | David Ahern <dsahern@gmail.com> | 2018-10-15 18:56:50 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-10-16 00:14:07 -0700 |
| commit | 08e814c9e8eb5a982cbd1e8f6bd255d97c51026f (patch) | |
| tree | b1791a1aca4521df03d0d0824195b288c6e01319 | |
| parent | 196cfebf897266c3450519e916bab9daff74e52c (diff) | |
net/ipv6: Bail early if user only wants cloned entries
Similar to IPv4, IPv6 fib no longer contains cloned routes. If a user
requests a route dump for only cloned entries, no sense walking the FIB
and returning everything.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv6/ip6_fib.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c index 5562c77022c6..2a058b408a6a 100644 --- a/net/ipv6/ip6_fib.c +++ b/net/ipv6/ip6_fib.c @@ -586,10 +586,13 @@ static int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb) } else if (nlmsg_len(nlh) >= sizeof(struct rtmsg)) { struct rtmsg *rtm = nlmsg_data(nlh); - if (rtm->rtm_flags & RTM_F_PREFIX) - arg.filter.flags = RTM_F_PREFIX; + arg.filter.flags = rtm->rtm_flags & (RTM_F_PREFIX|RTM_F_CLONED); } + /* fib entries are never clones */ + if (arg.filter.flags & RTM_F_CLONED) + return skb->len; + w = (void *)cb->args[2]; if (!w) { /* New dump: |