netdev - [PATCH iproute2 v2 2/3] ip vrf: use hook to change VRF in the child

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Date:   Tue, 18 Jun 2019 16:49:34 +0200
From:   Matteo Croce <mcroce@...hat.com>
To:     netdev@...r.kernel.org
Cc:     Stephen Hemminger <stephen@...workplumber.org>,
        David Ahern <dsahern@...nel.org>,
        Andrea Claudi <aclaudi@...hat.com>
Subject: [PATCH iproute2 v2 2/3] ip vrf: use hook to change VRF in the child

On vrf exec, reset the VRF associations in the child process, via the
new hook added to cmd_exec(). In this way, the parent doesn't have to
reset the VRF associations before spawning other processes.

Signed-off-by: Matteo Croce <mcroce@...hat.com>
---
 ip/ipvrf.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/ip/ipvrf.c b/ip/ipvrf.c
index 2b019c6c..43366f6e 100644
--- a/ip/ipvrf.c
+++ b/ip/ipvrf.c
@@ -442,6 +442,13 @@ out:
 	return rc;
 }
 
+static int do_switch(void *arg)
+{
+	char *vrf = arg;
+
+	return vrf_switch(vrf);
+}
+
 static int ipvrf_exec(int argc, char **argv)
 {
 	if (argc < 1) {
@@ -453,10 +460,7 @@ static int ipvrf_exec(int argc, char **argv)
 		return -1;
 	}
 
-	if (vrf_switch(argv[0]))
-		return -1;
-
-	return -cmd_exec(argv[1], argv + 1, !!batch_mode, NULL, NULL);
+	return -cmd_exec(argv[1], argv + 1, !!batch_mode, do_switch, argv[0]);
 }
 
 /* reset VRF association of current process to default VRF;
-- 
2.21.0