From: David Ahern <dsahern@kernel.org>
To: netdev@vger.kernel.org, davem@davemloft.net
Cc: David Ahern <dsahern@gmail.com>
Subject: [PATCH v2 net-next 10/11] net/ipv6: Bail early if user only wants cloned entries
Date: Mon, 15 Oct 2018 18:56:50 -0700 [thread overview]
Message-ID: <20181016015651.22696-11-dsahern@kernel.org> (raw)
In-Reply-To: <20181016015651.22696-1-dsahern@kernel.org>
From: David Ahern <dsahern@gmail.com>
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>
---
net/ipv6/ip6_fib.c | 7 +++++--
1 file 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:
--
2.11.0
next prev parent reply other threads:[~2018-10-16 9:44 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-16 1:56 [PATCH v2 net-next 00/11] net: Kernel side filtering for route dumps David Ahern
2018-10-16 1:56 ` [PATCH v2 net-next 01/11] netlink: Add answer_flags to netlink_callback David Ahern
2018-10-16 1:56 ` [PATCH v2 net-next 02/11] net: Add struct for fib dump filter David Ahern
2018-10-16 1:56 ` [PATCH v2 net-next 03/11] net/ipv4: Plumb support for filtering route dumps David Ahern
2019-07-19 4:17 ` Hangbin Liu
2019-07-19 16:55 ` David Ahern
2019-07-22 3:00 ` Hangbin Liu
2018-10-16 1:56 ` [PATCH v2 net-next 04/11] net/ipv6: " David Ahern
2018-10-16 1:56 ` [PATCH v2 net-next 05/11] net/mpls: " David Ahern
2018-10-16 1:56 ` [PATCH v2 net-next 06/11] ipmr: Refactor mr_rtm_dumproute David Ahern
2018-10-16 1:56 ` [PATCH v2 net-next 07/11] net: Plumb support for filtering ipv4 and ipv6 multicast route dumps David Ahern
2018-10-16 1:56 ` [PATCH v2 net-next 08/11] net: Enable kernel side filtering of " David Ahern
2018-10-16 1:56 ` [PATCH v2 net-next 09/11] net/mpls: Handle " David Ahern
2018-10-16 1:56 ` David Ahern [this message]
2018-10-16 1:56 ` [PATCH v2 net-next 11/11] net/ipv4: Bail early if user only wants prefix entries David Ahern
2018-10-16 6:30 ` [PATCH v2 net-next 00/11] net: Kernel side filtering for route dumps David Miller
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