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Replace clone_setcallback() with a new function clone_setdefcallback()

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that selects a callback from an interface prefix name. This allows us to
report a meaningful error when the user types 'ifconfig wlan0 create',
for example, and also kills some redundant code.

Reviewed by:    sam (earlier version)
This commit is contained in:
Rui Paulo 2009-02-27 00:31:34 +00:00
parent 2ef522c17f
commit 9c1fd0b05f
4 changed files with 34 additions and 18 deletions
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34
sbin/ifconfig/ifclone.c
View File

@ -32,6 +32,7 @@ static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/queue.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
@ -88,14 +89,24 @@ list_cloners(void)
free(buf);
}
static clone_callback_func *clone_cb = NULL;
struct clone_defcb {
char ifprefix[IFNAMSIZ];
clone_callback_func *clone_cb;
SLIST_ENTRY(clone_defcb) next;
};
static SLIST_HEAD(, clone_defcb) clone_defcbh =
SLIST_HEAD_INITIALIZER(clone_defcbh);
void
clone_setcallback(clone_callback_func *p)
clone_setdefcallback(const char *ifprefix, clone_callback_func *p)
{
if (clone_cb != NULL && clone_cb != p)
errx(1, "conflicting device create parameters");
clone_cb = p;
struct clone_defcb *dcp;
dcp = malloc(sizeof(*dcp));
strlcpy(dcp->ifprefix, ifprefix, IFNAMSIZ-1);
dcp->clone_cb = p;
SLIST_INSERT_HEAD(&clone_defcbh, dcp, next);
}
/*
@ -108,9 +119,22 @@ static void
ifclonecreate(int s, void *arg)
{
struct ifreq ifr;
struct clone_defcb *dcp;
clone_callback_func *clone_cb = NULL;
memset(&ifr, 0, sizeof(ifr));
(void) strlcpy(ifr.ifr_name, name, sizeof(ifr.ifr_name));
if (clone_cb == NULL) {
/* Try to find a default callback */
SLIST_FOREACH(dcp, &clone_defcbh, next) {
if (strncmp(dcp->ifprefix, ifr.ifr_name,
strlen(dcp->ifprefix)) == 0) {
clone_cb = dcp->clone_cb;
break;
}
}
}
if (clone_cb == NULL) {
/* NB: no parameters */
if (ioctl(s, SIOCIFCREATE2, &ifr) < 0)

2
sbin/ifconfig/ifconfig.h
View File

@ -141,7 +141,7 @@ void printb(const char *s, unsigned value, const char *bits);
void ifmaybeload(const char *name);
typedef void clone_callback_func(int, struct ifreq *);
void clone_setcallback(clone_callback_func *);
void clone_setdefcallback(const char *, clone_callback_func *);
/*
* XXX expose this so modules that neeed to know of any pending

11
sbin/ifconfig/ifieee80211.c
View File

@ -4667,7 +4667,8 @@ wlan_create(int s, struct ifreq *ifr)
static const uint8_t zerobssid[IEEE80211_ADDR_LEN];
if (params.icp_parent[0] == '\0')
errx(1, "must specify a parent when creating a wlan device");
errx(1, "must specify a parent device (wlandev) when creating "
"a wlan device");
if (params.icp_opmode == IEEE80211_M_WDS &&
memcmp(params.icp_bssid, zerobssid, sizeof(zerobssid)) == 0)
errx(1, "no bssid specified for WDS (use wlanbssid)");
@ -4680,7 +4681,6 @@ static
DECL_CMD_FUNC(set80211clone_wlandev, arg, d)
{
strlcpy(params.icp_parent, arg, IFNAMSIZ);
clone_setcallback(wlan_create);
}
static
@ -4692,7 +4692,6 @@ DECL_CMD_FUNC(set80211clone_wlanbssid, arg, d)
if (ea == NULL)
errx(1, "%s: cannot parse bssid", arg);
memcpy(params.icp_bssid, ea->octet, IEEE80211_ADDR_LEN);
clone_setcallback(wlan_create);
}
static
@ -4705,7 +4704,6 @@ DECL_CMD_FUNC(set80211clone_wlanaddr, arg, d)
errx(1, "%s: cannot parse addres", arg);
memcpy(params.icp_macaddr, ea->octet, IEEE80211_ADDR_LEN);
params.icp_flags |= IEEE80211_CLONE_MACADDR;
clone_setcallback(wlan_create);
}
static
@ -4729,7 +4727,6 @@ DECL_CMD_FUNC(set80211clone_wlanmode, arg, d)
params.icp_flags |= IEEE80211_CLONE_TDMA;
} else
errx(1, "Don't know to create %s for %s", arg, name);
clone_setcallback(wlan_create);
#undef iseq
}
@ -4741,7 +4738,6 @@ set80211clone_beacons(const char *val, int d, int s, const struct afswtch *rafp)
params.icp_flags &= ~IEEE80211_CLONE_NOBEACONS;
else
params.icp_flags |= IEEE80211_CLONE_NOBEACONS;
clone_setcallback(wlan_create);
}
static void
@ -4751,7 +4747,6 @@ set80211clone_bssid(const char *val, int d, int s, const struct afswtch *rafp)
params.icp_flags |= IEEE80211_CLONE_BSSID;
else
params.icp_flags &= ~IEEE80211_CLONE_BSSID;
clone_setcallback(wlan_create);
}
static void
@ -4761,7 +4756,6 @@ set80211clone_wdslegacy(const char *val, int d, int s, const struct afswtch *raf
params.icp_flags |= IEEE80211_CLONE_WDSLEGACY;
else
params.icp_flags &= ~IEEE80211_CLONE_WDSLEGACY;
clone_setcallback(wlan_create);
}
static struct cmd ieee80211_cmds[] = {
@ -4935,5 +4929,6 @@ ieee80211_ctor(void)
for (i = 0; i < N(ieee80211_cmds); i++)
cmd_register(&ieee80211_cmds[i]);
af_register(&af_ieee80211);
clone_setdefcallback("wlan", wlan_create);
#undef N
}

5
sbin/ifconfig/ifvlan.c
View File

@ -136,8 +136,6 @@ DECL_CMD_FUNC(setvlantag, val, d)
if (getvlan(s, &ifr, &vreq) != -1)
vlan_set(s, &ifr);
else
clone_setcallback(vlan_create);
}
static
@ -149,8 +147,6 @@ DECL_CMD_FUNC(setvlandev, val, d)
if (getvlan(s, &ifr, &vreq) != -1)
vlan_set(s, &ifr);
else
clone_setcallback(vlan_create);
}
static
@ -202,5 +198,6 @@ vlan_ctor(void)
cmd_register(&vlan_cmds[i]);
af_register(&af_vlan);
callback_register(vlan_cb, NULL);
clone_setdefcallback("vlan", vlan_create);
#undef N
}