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ifconfig: improve vlan options parsing

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PR:	261136
Reported by:	Daniel O'Connor
MFC after:	2 weeks
This commit is contained in:
Alexander V. Chernikov 2022-01-17 09:30:26 +00:00
parent b1f7154cb1
commit 779fd05344
1 changed files with 14 additions and 7 deletions
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19
sbin/ifconfig/ifvlan.c
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@ -126,11 +126,6 @@ vlan_parse_ethervid(const char *name)
strlcpy(ifname, name, IFNAMSIZ);
if ((cp = strrchr(ifname, '.')) == NULL)
return;
/*
* Don't mix vlan/vlandev parameters with dot notation.
*/
if (params.vlr_tag != NOTAG || params.vlr_parent[0] != '\0')
errx(1, "ambiguous vlan specification");
/*
* Derive params from interface name: "parent.vid".
*/
@ -144,8 +139,20 @@ vlan_parse_ethervid(const char *name)
if ((*cp != '\0') || (vid & ~0xFFF))
errx(1, "invalid vlan tag");
/*
* allow "devX.Y vlandev devX vlan Y" syntax
*/
if (params.vlr_tag == NOTAG || params.vlr_tag == vid)
params.vlr_tag = vid;
else
errx(1, "ambiguous vlan specification");
/* Restrict overriding interface name */
if (params.vlr_parent[0] == '\0' || !strcmp(params.vlr_parent, ifname))
strlcpy(params.vlr_parent, ifname, IFNAMSIZ);
params.vlr_tag = (vid & 0xFFF);
else
errx(1, "ambiguous vlan specification");
printf("CR: %s %d\n", params.vlr_parent, params.vlr_tag);
}
static void