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Date: Tue, 8 Nov 2022 20:43:44 +0800
From: Hangbin Liu <liuhangbin@...il.com>
To: netdev@...r.kernel.org
Cc: Ido Schimmel <idosch@...sch.org>,
Guillaume Nault <gnault@...hat.com>,
David Ahern <dsahern@...nel.org>,
Stephen Hemminger <stephen@...workplumber.org>,
Hangbin Liu <liuhangbin@...il.com>
Subject: [PATCH iproute2] ip: fix return value for rtnl_talk failures
Since my last commit "rtnetlink: add new function rtnl_echo_talk()" we
return the kernel rtnl exit code directly, which breaks some kernel
selftest checking. As there are still a lot of tests checking -2 as the
error return value, to keep backward compatibility, let's keep using
-2 for all the rtnl return values.
Reported-by: Ido Schimmel <idosch@...sch.org>
Fixes: 6c09257f1bf6 ("rtnetlink: add new function rtnl_echo_talk()")
Signed-off-by: Hangbin Liu <liuhangbin@...il.com>
---
ip/ipaddress.c | 10 ++++++++--
ip/iplink.c | 2 +-
ip/ipnexthop.c | 10 ++++++++--
ip/iproute.c | 10 ++++++++--
ip/iprule.c | 10 ++++++++--
5 files changed, 33 insertions(+), 9 deletions(-)
diff --git a/ip/ipaddress.c b/ip/ipaddress.c
index 456545bb..5e833482 100644
--- a/ip/ipaddress.c
+++ b/ip/ipaddress.c
@@ -2422,6 +2422,7 @@ static int ipaddr_modify(int cmd, int flags, int argc, char **argv)
__u32 preferred_lft = INFINITY_LIFE_TIME;
__u32 valid_lft = INFINITY_LIFE_TIME;
unsigned int ifa_flags = 0;
+ int ret;
while (argc > 0) {
if (strcmp(*argv, "peer") == 0 ||
@@ -2604,9 +2605,14 @@ static int ipaddr_modify(int cmd, int flags, int argc, char **argv)
}
if (echo_request)
- return rtnl_echo_talk(&rth, &req.n, json, print_addrinfo);
+ ret = rtnl_echo_talk(&rth, &req.n, json, print_addrinfo);
+ else
+ ret = rtnl_talk(&rth, &req.n, NULL);
- return rtnl_talk(&rth, &req.n, NULL);
+ if (ret)
+ return -2;
+
+ return 0;
}
int do_ipaddr(int argc, char **argv)
diff --git a/ip/iplink.c b/ip/iplink.c
index 92ce6c47..301a535e 100644
--- a/ip/iplink.c
+++ b/ip/iplink.c
@@ -1129,7 +1129,7 @@ static int iplink_modify(int cmd, unsigned int flags, int argc, char **argv)
ret = rtnl_talk(&rth, &req.n, NULL);
if (ret)
- return ret;
+ return -2;
/* remove device from cache; next use can refresh with new data */
ll_drop_by_index(req.i.ifi_index);
diff --git a/ip/ipnexthop.c b/ip/ipnexthop.c
index c87e847f..9f16b809 100644
--- a/ip/ipnexthop.c
+++ b/ip/ipnexthop.c
@@ -920,6 +920,7 @@ static int ipnh_modify(int cmd, unsigned int flags, int argc, char **argv)
.nhm.nh_family = preferred_family,
};
__u32 nh_flags = 0;
+ int ret;
while (argc > 0) {
if (!strcmp(*argv, "id")) {
@@ -1000,9 +1001,14 @@ static int ipnh_modify(int cmd, unsigned int flags, int argc, char **argv)
req.nhm.nh_flags = nh_flags;
if (echo_request)
- return rtnl_echo_talk(&rth, &req.n, json, print_nexthop_nocache);
+ ret = rtnl_echo_talk(&rth, &req.n, json, print_nexthop_nocache);
+ else
+ ret = rtnl_talk(&rth, &req.n, NULL);
+
+ if (ret)
+ return -2;
- return rtnl_talk(&rth, &req.n, NULL);
+ return 0;
}
static int ipnh_get_id(__u32 id)
diff --git a/ip/iproute.c b/ip/iproute.c
index b4b9d1b2..f34289e8 100644
--- a/ip/iproute.c
+++ b/ip/iproute.c
@@ -1134,6 +1134,7 @@ static int iproute_modify(int cmd, unsigned int flags, int argc, char **argv)
int raw = 0;
int type_ok = 0;
__u32 nhid = 0;
+ int ret;
if (cmd != RTM_DELROUTE) {
req.r.rtm_protocol = RTPROT_BOOT;
@@ -1588,9 +1589,14 @@ static int iproute_modify(int cmd, unsigned int flags, int argc, char **argv)
req.r.rtm_type = RTN_UNICAST;
if (echo_request)
- return rtnl_echo_talk(&rth, &req.n, json, print_route);
+ ret = rtnl_echo_talk(&rth, &req.n, json, print_route);
+ else
+ ret = rtnl_talk(&rth, &req.n, NULL);
+
+ if (ret)
+ return -2;
- return rtnl_talk(&rth, &req.n, NULL);
+ return 0;
}
static int iproute_flush_cache(void)
diff --git a/ip/iprule.c b/ip/iprule.c
index 8f750425..8e5a2287 100644
--- a/ip/iprule.c
+++ b/ip/iprule.c
@@ -787,6 +787,7 @@ static int iprule_modify(int cmd, int argc, char **argv)
.frh.family = preferred_family,
.frh.action = FR_ACT_UNSPEC,
};
+ int ret;
if (cmd == RTM_NEWRULE) {
if (argc == 0) {
@@ -1017,9 +1018,14 @@ static int iprule_modify(int cmd, int argc, char **argv)
req.frh.table = RT_TABLE_MAIN;
if (echo_request)
- return rtnl_echo_talk(&rth, &req.n, json, print_rule);
+ ret = rtnl_echo_talk(&rth, &req.n, json, print_rule);
+ else
+ ret = rtnl_talk(&rth, &req.n, NULL);
+
+ if (ret)
+ return -2;
- return rtnl_talk(&rth, &req.n, NULL);
+ return 0;
}
int do_iprule(int argc, char **argv)
--
2.38.1
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