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authorDavid Ahern <dsahern@gmail.com>2018-10-15 18:56:50 -0700
committerDavid S. Miller <davem@davemloft.net>2018-10-16 00:14:07 -0700
commit08e814c9e8eb5a982cbd1e8f6bd255d97c51026f (patch)
treeb1791a1aca4521df03d0d0824195b288c6e01319 /net
parent196cfebf897266c3450519e916bab9daff74e52c (diff)
downloadlinux-08e814c9e8eb5a982cbd1e8f6bd255d97c51026f.tar.bz2
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>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/ip6_fib.c7
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: