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Message-Id: <a11809a4517827d3340e7e7c7b8dbbad32584180.1603154867.git.me@pmachata.org>
Date: Tue, 20 Oct 2020 02:58:13 +0200
From: Petr Machata <me@...chata.org>
To: netdev@...r.kernel.org, dsahern@...il.com,
stephen@...workplumber.org
Cc: john.fastabend@...il.com, jiri@...dia.com, idosch@...dia.com,
Petr Machata <me@...chata.org>
Subject: [PATCH iproute2-next 05/15] ip: iplink: Convert to use parse_on_off(), parse_flag_on_off()
Invoke parse_flag_on_off() instead of rolling a custom function. Several
places have the on/off logic reversed vs. how the flag is specified (e.g.
IFF_NOARP vs. "arp" on command line). For those, invoke parse_on_off() and
then set_flag() with a negated value.
Signed-off-by: Petr Machata <me@...chata.org>
---
ip/iplink.c | 182 +++++++++++++++++++---------------------------------
1 file changed, 66 insertions(+), 116 deletions(-)
diff --git a/ip/iplink.c b/ip/iplink.c
index 5ec33a98b96e..422e2fdccde5 100644
--- a/ip/iplink.c
+++ b/ip/iplink.c
@@ -135,14 +135,6 @@ static void usage(void)
iplink_usage();
}
-static int on_off(const char *msg, const char *realval)
-{
- fprintf(stderr,
- "Error: argument of \"%s\" must be \"on\" or \"off\", not \"%s\"\n",
- msg, realval);
- return -1;
-}
-
static void *BODY; /* cached dlopen(NULL) handle */
static struct link_util *linkutil_list;
@@ -351,6 +343,7 @@ static int iplink_parse_vf(int vf, int *argcp, char ***argvp,
int len, argc = *argcp;
char **argv = *argvp;
struct rtattr *vfinfo;
+ int ret;
tivt.min_tx_rate = -1;
tivt.max_tx_rate = -1;
@@ -463,12 +456,9 @@ static int iplink_parse_vf(int vf, int *argcp, char ***argvp,
struct ifla_vf_spoofchk ivs;
NEXT_ARG();
- if (matches(*argv, "on") == 0)
- ivs.setting = 1;
- else if (matches(*argv, "off") == 0)
- ivs.setting = 0;
- else
- return on_off("spoofchk", *argv);
+ ivs.setting = parse_on_off("spoofchk", *argv, &ret);
+ if (ret)
+ return ret;
ivs.vf = vf;
addattr_l(&req->n, sizeof(*req), IFLA_VF_SPOOFCHK,
&ivs, sizeof(ivs));
@@ -477,12 +467,9 @@ static int iplink_parse_vf(int vf, int *argcp, char ***argvp,
struct ifla_vf_rss_query_en ivs;
NEXT_ARG();
- if (matches(*argv, "on") == 0)
- ivs.setting = 1;
- else if (matches(*argv, "off") == 0)
- ivs.setting = 0;
- else
- return on_off("query_rss", *argv);
+ ivs.setting = parse_on_off("query_rss", *argv, &ret);
+ if (ret)
+ return ret;
ivs.vf = vf;
addattr_l(&req->n, sizeof(*req), IFLA_VF_RSS_QUERY_EN,
&ivs, sizeof(ivs));
@@ -491,12 +478,9 @@ static int iplink_parse_vf(int vf, int *argcp, char ***argvp,
struct ifla_vf_trust ivt;
NEXT_ARG();
- if (matches(*argv, "on") == 0)
- ivt.setting = 1;
- else if (matches(*argv, "off") == 0)
- ivt.setting = 0;
- else
- invarg("Invalid \"trust\" value\n", *argv);
+ ivt.setting = parse_on_off("trust", *argv, &ret);
+ if (ret)
+ return ret;
ivt.vf = vf;
addattr_l(&req->n, sizeof(*req), IFLA_VF_TRUST,
&ivt, sizeof(ivt));
@@ -594,6 +578,7 @@ int iplink_parse(int argc, char **argv, struct iplink_req *req, char **type)
int index = 0;
int group = -1;
int addr_len = 0;
+ int err;
ret = argc;
@@ -687,62 +672,53 @@ int iplink_parse(int argc, char **argv, struct iplink_req *req, char **type)
NEXT_ARG();
req->i.ifi_change |= IFF_MULTICAST;
- if (strcmp(*argv, "on") == 0)
- req->i.ifi_flags |= IFF_MULTICAST;
- else if (strcmp(*argv, "off") == 0)
- req->i.ifi_flags &= ~IFF_MULTICAST;
- else
- return on_off("multicast", *argv);
+ parse_flag_on_off("multicast", *argv, &req->i.ifi_flags,
+ IFF_MULTICAST, &err);
+ if (err)
+ return err;
} else if (strcmp(*argv, "allmulticast") == 0) {
NEXT_ARG();
req->i.ifi_change |= IFF_ALLMULTI;
- if (strcmp(*argv, "on") == 0)
- req->i.ifi_flags |= IFF_ALLMULTI;
- else if (strcmp(*argv, "off") == 0)
- req->i.ifi_flags &= ~IFF_ALLMULTI;
- else
- return on_off("allmulticast", *argv);
+ parse_flag_on_off("allmulticast", *argv, &req->i.ifi_flags,
+ IFF_ALLMULTI, &err);
+ if (err)
+ return err;
} else if (strcmp(*argv, "promisc") == 0) {
NEXT_ARG();
req->i.ifi_change |= IFF_PROMISC;
- if (strcmp(*argv, "on") == 0)
- req->i.ifi_flags |= IFF_PROMISC;
- else if (strcmp(*argv, "off") == 0)
- req->i.ifi_flags &= ~IFF_PROMISC;
- else
- return on_off("promisc", *argv);
+ parse_flag_on_off("promisc", *argv, &req->i.ifi_flags,
+ IFF_PROMISC, &err);
+ if (err)
+ return err;
} else if (strcmp(*argv, "trailers") == 0) {
+ int on_off;
+
NEXT_ARG();
req->i.ifi_change |= IFF_NOTRAILERS;
- if (strcmp(*argv, "off") == 0)
- req->i.ifi_flags |= IFF_NOTRAILERS;
- else if (strcmp(*argv, "on") == 0)
- req->i.ifi_flags &= ~IFF_NOTRAILERS;
- else
- return on_off("trailers", *argv);
+ on_off = parse_on_off("trailers", *argv, &err);
+ if (err)
+ return err;
+ set_flag(&req->i.ifi_flags, IFF_NOTRAILERS, !on_off);
} else if (strcmp(*argv, "arp") == 0) {
+ int on_off;
+
NEXT_ARG();
req->i.ifi_change |= IFF_NOARP;
- if (strcmp(*argv, "on") == 0)
- req->i.ifi_flags &= ~IFF_NOARP;
- else if (strcmp(*argv, "off") == 0)
- req->i.ifi_flags |= IFF_NOARP;
- else
- return on_off("arp", *argv);
+ on_off = parse_on_off("arp", *argv, &err);
+ if (err)
+ return err;
+ set_flag(&req->i.ifi_flags, IFF_NOARP, !on_off);
} else if (strcmp(*argv, "carrier") == 0) {
int carrier;
NEXT_ARG();
- if (strcmp(*argv, "on") == 0)
- carrier = 1;
- else if (strcmp(*argv, "off") == 0)
- carrier = 0;
- else
- return on_off("carrier", *argv);
+ carrier = parse_on_off("carrier", *argv, &err);
+ if (err)
+ return err;
addattr8(&req->n, sizeof(*req), IFLA_CARRIER, carrier);
} else if (strcmp(*argv, "vf") == 0) {
@@ -793,12 +769,10 @@ int iplink_parse(int argc, char **argv, struct iplink_req *req, char **type)
NEXT_ARG();
req->i.ifi_change |= IFF_DYNAMIC;
- if (strcmp(*argv, "on") == 0)
- req->i.ifi_flags |= IFF_DYNAMIC;
- else if (strcmp(*argv, "off") == 0)
- req->i.ifi_flags &= ~IFF_DYNAMIC;
- else
- return on_off("dynamic", *argv);
+ parse_flag_on_off("dynamic", *argv, &req->i.ifi_flags,
+ IFF_DYNAMIC, &err);
+ if (err)
+ return err;
} else if (matches(*argv, "type") == 0) {
NEXT_ARG();
*type = *argv;
@@ -895,12 +869,9 @@ int iplink_parse(int argc, char **argv, struct iplink_req *req, char **type)
unsigned int proto_down;
NEXT_ARG();
- if (strcmp(*argv, "on") == 0)
- proto_down = 1;
- else if (strcmp(*argv, "off") == 0)
- proto_down = 0;
- else
- return on_off("protodown", *argv);
+ proto_down = parse_on_off("protodown", *argv, &err);
+ if (err)
+ return err;
addattr8(&req->n, sizeof(*req), IFLA_PROTO_DOWN,
proto_down);
} else if (strcmp(*argv, "gso_max_size") == 0) {
@@ -1320,6 +1291,7 @@ static int do_set(int argc, char **argv)
struct ifreq ifr0, ifr1;
char *newname = NULL;
int htype, halen;
+ int ret;
while (argc > 0) {
if (strcmp(*argv, "up") == 0) {
@@ -1357,63 +1329,41 @@ static int do_set(int argc, char **argv)
} else if (strcmp(*argv, "multicast") == 0) {
NEXT_ARG();
mask |= IFF_MULTICAST;
-
- if (strcmp(*argv, "on") == 0)
- flags |= IFF_MULTICAST;
- else if (strcmp(*argv, "off") == 0)
- flags &= ~IFF_MULTICAST;
- else
- return on_off("multicast", *argv);
+ parse_flag_on_off("multicast", *argv, &flags, IFF_MULTICAST, &ret);
+ if (ret)
+ return ret;
} else if (strcmp(*argv, "allmulticast") == 0) {
NEXT_ARG();
mask |= IFF_ALLMULTI;
-
- if (strcmp(*argv, "on") == 0)
- flags |= IFF_ALLMULTI;
- else if (strcmp(*argv, "off") == 0)
- flags &= ~IFF_ALLMULTI;
- else
- return on_off("allmulticast", *argv);
+ parse_flag_on_off("allmulticast", *argv, &flags, IFF_ALLMULTI, &ret);
} else if (strcmp(*argv, "promisc") == 0) {
NEXT_ARG();
mask |= IFF_PROMISC;
-
- if (strcmp(*argv, "on") == 0)
- flags |= IFF_PROMISC;
- else if (strcmp(*argv, "off") == 0)
- flags &= ~IFF_PROMISC;
- else
- return on_off("promisc", *argv);
+ parse_flag_on_off("promisc", *argv, &flags, IFF_PROMISC, &ret);
} else if (strcmp(*argv, "trailers") == 0) {
+ int on_off;
+
NEXT_ARG();
mask |= IFF_NOTRAILERS;
-
- if (strcmp(*argv, "off") == 0)
- flags |= IFF_NOTRAILERS;
- else if (strcmp(*argv, "on") == 0)
- flags &= ~IFF_NOTRAILERS;
- else
- return on_off("trailers", *argv);
+ on_off = parse_on_off("trailers", *argv, &ret);
+ if (ret)
+ return ret;
+ set_flag(&flags, IFF_NOTRAILERS, !on_off);
} else if (strcmp(*argv, "arp") == 0) {
+ int on_off;
+
NEXT_ARG();
mask |= IFF_NOARP;
-
- if (strcmp(*argv, "on") == 0)
- flags &= ~IFF_NOARP;
- else if (strcmp(*argv, "off") == 0)
- flags |= IFF_NOARP;
- else
- return on_off("arp", *argv);
+ on_off = parse_on_off("arp", *argv, &ret);
+ if (ret)
+ return ret;
+ set_flag(&flags, IFF_NOARP, !on_off);
} else if (matches(*argv, "dynamic") == 0) {
NEXT_ARG();
mask |= IFF_DYNAMIC;
-
- if (strcmp(*argv, "on") == 0)
- flags |= IFF_DYNAMIC;
- else if (strcmp(*argv, "off") == 0)
- flags &= ~IFF_DYNAMIC;
- else
- return on_off("dynamic", *argv);
+ parse_flag_on_off("dynamic", *argv, &flags, IFF_DYNAMIC, &ret);
+ if (ret)
+ return ret;
} else {
if (strcmp(*argv, "dev") == 0)
NEXT_ARG();
--
2.25.1
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