netdev - [PATCH iproute2-next 09/11] libnetlink: Convert GETNSID dumps to use rtnl_nsiddump

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Message-Id: <20180929175931.18448-10-dsahern@kernel.org>
Date:   Sat, 29 Sep 2018 10:59:29 -0700
From:   David Ahern <dsahern@...nel.org>
To:     netdev@...r.kernel.org
Cc:     stephen@...workplumber.org, christian@...uner.io,
        David Ahern <dsahern@...il.com>
Subject: [PATCH iproute2-next 09/11] libnetlink: Convert GETNSID dumps to use rtnl_nsiddump_req

From: David Ahern <dsahern@...il.com>

Add rtnl_nsiddump_req for namespace id dumps using the proper rtgenmsg
as the header. Convert existing RTM_GETNSID dumps to use it.

Signed-off-by: David Ahern <dsahern@...il.com>
---
 include/libnetlink.h |  2 ++
 ip/ipnetns.c         |  2 +-
 lib/libnetlink.c     | 16 ++++++++++++++++
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/include/libnetlink.h b/include/libnetlink.h
index 5ccc421b4b0e..f22c92ac03dc 100644
--- a/include/libnetlink.h
+++ b/include/libnetlink.h
@@ -63,6 +63,8 @@ int rtnl_mdbdump_req(struct rtnl_handle *rth, int family)
 	__attribute__((warn_unused_result));
 int rtnl_netconfdump_req(struct rtnl_handle *rth, int family)
 	__attribute__((warn_unused_result));
+int rtnl_nsiddump_req(struct rtnl_handle *rth, int family)
+	__attribute__((warn_unused_result));
 
 int rtnl_wilddump_request(struct rtnl_handle *rth, int fam, int type)
 	__attribute__((warn_unused_result));
diff --git a/ip/ipnetns.c b/ip/ipnetns.c
index 368be0cbc0a4..e8500c773994 100644
--- a/ip/ipnetns.c
+++ b/ip/ipnetns.c
@@ -346,7 +346,7 @@ static int netns_list_id(int argc, char **argv)
 		return -ENOTSUP;
 	}
 
-	if (rtnl_wilddump_request(&rth, AF_UNSPEC, RTM_GETNSID) < 0) {
+	if (rtnl_nsiddump_req(&rth, AF_UNSPEC) < 0) {
 		perror("Cannot send dump request");
 		exit(1);
 	}
diff --git a/lib/libnetlink.c b/lib/libnetlink.c
index c28047e4b055..2dd14ac5ea58 100644
--- a/lib/libnetlink.c
+++ b/lib/libnetlink.c
@@ -330,6 +330,22 @@ int rtnl_netconfdump_req(struct rtnl_handle *rth, int family)
 	return send(rth->fd, &req, sizeof(req), 0);
 }
 
+int rtnl_nsiddump_req(struct rtnl_handle *rth, int family)
+{
+	struct {
+		struct nlmsghdr nlh;
+		struct rtgenmsg rtm;
+	} req = {
+		.nlh.nlmsg_len = sizeof(req),
+		.nlh.nlmsg_type = RTM_GETNSID,
+		.nlh.nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST,
+		.nlh.nlmsg_seq = rth->dump = ++rth->seq,
+		.rtm.rtgen_family = family,
+	};
+
+	return send(rth->fd, &req, sizeof(req), 0);
+}
+
 int rtnl_wilddump_request(struct rtnl_handle *rth, int family, int type)
 {
 	return rtnl_wilddump_req_filter(rth, family, type, RTEXT_FILTER_VF);
-- 
2.11.0