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 11/11] net/ipv4: Bail early if user only wants prefix entries
Date: Mon, 15 Oct 2018 18:56:51 -0700 [thread overview]
Message-ID: <20181016015651.22696-12-dsahern@kernel.org> (raw)
In-Reply-To: <20181016015651.22696-1-dsahern@kernel.org>
From: David Ahern <dsahern@gmail.com>
Unlike IPv6, IPv4 does not have routes marked with RTF_PREFIX_RT. If the
flag is set in the dump request, just return.
In the process of this change, move the CLONE check to use the new
filter flags.
Signed-off-by: David Ahern <dsahern@gmail.com>
---
net/ipv4/fib_frontend.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index e86ca2255181..5bf653f36911 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -886,10 +886,14 @@ static int inet_dump_fib(struct sk_buff *skb, struct netlink_callback *cb)
err = ip_valid_fib_dump_req(net, nlh, &filter, cb);
if (err < 0)
return err;
+ } else if (nlmsg_len(nlh) >= sizeof(struct rtmsg)) {
+ struct rtmsg *rtm = nlmsg_data(nlh);
+
+ filter.flags = rtm->rtm_flags & (RTM_F_PREFIX | RTM_F_CLONED);
}
- if (nlmsg_len(nlh) >= sizeof(struct rtmsg) &&
- ((struct rtmsg *)nlmsg_data(nlh))->rtm_flags & RTM_F_CLONED)
+ /* fib entries are never clones and ipv4 does not use prefix flag */
+ if (filter.flags & (RTM_F_PREFIX | RTM_F_CLONED))
return skb->len;
if (filter.table_id) {
--
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 ` [PATCH v2 net-next 10/11] net/ipv6: Bail early if user only wants cloned entries David Ahern
2018-10-16 1:56 ` David Ahern [this message]
2018-10-16 6:30 ` [PATCH v2 net-next 00/11] net: Kernel side filtering for route dumps David Miller
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