bridge: vlan: set vlan option attributes while parsing
Set vlan option attributes immediately while parsing to simplify the
checks, avoid having reserved values (e.g. -1 for unset var) and have
more limited scope for the variables. This is also similar to how global
vlan options are set. The attribute setting and checks are moved with
option parsing, no functional changes intended.
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
diff --git a/bridge/vlan.c b/bridge/vlan.c
index 4ead57b..48365bc 100644
--- a/bridge/vlan.c
+++ b/bridge/vlan.c
@@ -272,16 +272,24 @@
};
struct bridge_vlan_info vinfo = {};
struct rtattr *afspec;
- short vid_end = -1;
char *d = NULL;
short vid = -1;
- int state = -1;
+ afspec = addattr_nest(&req.n, sizeof(req), BRIDGE_VLANDB_ENTRY);
+ afspec->rta_type |= NLA_F_NESTED;
while (argc > 0) {
if (strcmp(*argv, "dev") == 0) {
NEXT_ARG();
d = *argv;
+ req.bvm.ifindex = ll_name_to_index(d);
+ if (req.bvm.ifindex == 0) {
+ fprintf(stderr,
+ "Cannot find network device \"%s\"\n",
+ d);
+ return -1;
+ }
} else if (strcmp(*argv, "vid") == 0) {
+ short vid_end = -1;
char *p;
NEXT_ARG();
@@ -299,8 +307,22 @@
} else {
vid = atoi(*argv);
}
+ if (vid >= 4096) {
+ fprintf(stderr, "Invalid VLAN ID \"%hu\"\n",
+ vid);
+ return -1;
+ }
+
+ vinfo.flags = BRIDGE_VLAN_INFO_ONLY_OPTS;
+ vinfo.vid = vid;
+ addattr_l(&req.n, sizeof(req), BRIDGE_VLANDB_ENTRY_INFO,
+ &vinfo, sizeof(vinfo));
+ if (vid_end != -1)
+ addattr16(&req.n, sizeof(req),
+ BRIDGE_VLANDB_ENTRY_RANGE, vid_end);
} else if (strcmp(*argv, "state") == 0) {
char *endptr;
+ int state;
NEXT_ARG();
state = strtol(*argv, &endptr, 10);
@@ -310,42 +332,21 @@
fprintf(stderr, "Error: invalid STP state\n");
return -1;
}
+ addattr8(&req.n, sizeof(req), BRIDGE_VLANDB_ENTRY_STATE,
+ state);
} else {
if (matches(*argv, "help") == 0)
NEXT_ARG();
}
argc--; argv++;
}
+ addattr_nest_end(&req.n, afspec);
if (d == NULL || vid == -1) {
fprintf(stderr, "Device and VLAN ID are required arguments.\n");
return -1;
}
- req.bvm.ifindex = ll_name_to_index(d);
- if (req.bvm.ifindex == 0) {
- fprintf(stderr, "Cannot find network device \"%s\"\n", d);
- return -1;
- }
-
- if (vid >= 4096) {
- fprintf(stderr, "Invalid VLAN ID \"%hu\"\n", vid);
- return -1;
- }
- afspec = addattr_nest(&req.n, sizeof(req), BRIDGE_VLANDB_ENTRY);
- afspec->rta_type |= NLA_F_NESTED;
-
- vinfo.flags = BRIDGE_VLAN_INFO_ONLY_OPTS;
- vinfo.vid = vid;
- addattr_l(&req.n, sizeof(req), BRIDGE_VLANDB_ENTRY_INFO, &vinfo,
- sizeof(vinfo));
- if (vid_end != -1)
- addattr16(&req.n, sizeof(req), BRIDGE_VLANDB_ENTRY_RANGE,
- vid_end);
- if (state >= 0)
- addattr8(&req.n, sizeof(req), BRIDGE_VLANDB_ENTRY_STATE, state);
- addattr_nest_end(&req.n, afspec);
-
if (rtnl_talk(&rth, &req.n, NULL) < 0)
return -1;
