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Differential D35743 Diff 107881 sys/dev/wtap/if_wtap_module.c

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sys/dev/wtap/if_wtap_module.c

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#include <net/vnet.h> #include <net/vnet.h>
#include <net80211/ieee80211_var.h> #include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_regdomain.h> #include <net80211/ieee80211_regdomain.h>
#include <net/bpf.h> #include <net/bpf.h>
#include <sys/errno.h> #include <sys/errno.h>
#include <sys/conf.h> /* cdevsw struct */ #include <sys/conf.h> /* cdevsw struct */
#include <sys/uio.h> /* uio struct */ #include <sys/uio.h> /* uio struct */
#include <netinet/in.h> #include <netinet/in.h>
#include <netinet/if_ether.h> #include <netinet/if_ether.h>
#include "if_wtapvar.h" #include "if_wtapvar.h"
#include "if_wtapioctl.h" #include "if_wtapioctl.h"
#include "if_medium.h" #include "if_medium.h"
#include "wtap_hal/hal.h" #include "wtap_hal/hal.h"
/* WTAP PLUGINS */ /* WTAP PLUGINS */
#include "plugins/visibility.h" #include "plugins/visibility.h"
MALLOC_DEFINE(M_WTAP, "wtap", "wtap wireless simulator"); MALLOC_DEFINE(M_WTAP, "wtap", "wtap wireless simulator");
MALLOC_DEFINE(M_WTAP_PACKET, "wtap packet", "wtap wireless simulator packet"); MALLOC_DEFINE(M_WTAP_PACKET, "wtap packet", "wtap wireless simulator packet");
MALLOC_DEFINE(M_WTAP_RXBUF, "wtap rxbuf", MALLOC_DEFINE(M_WTAP_RXBUF, "wtap rxbuf",
"wtap wireless simulator receive buffer"); "wtap wireless simulator receive buffer");
MALLOC_DEFINE(M_WTAP_PLUGIN, "wtap plugin", "wtap wireless simulator plugin"); MALLOC_DEFINE(M_WTAP_PLUGIN, "wtap plugin", "wtap wireless simulator plugin");
static struct wtap_hal *hal; static struct wtap_hal *hal;
/* Function prototypes */ /* Function prototypes */
static d_ioctl_t wtap_ioctl; static d_ioctl_t wtap_ioctl;
static struct cdev *sdev; static struct cdev *sdev;
static struct cdevsw wtap_cdevsw = { static struct cdevsw wtap_cdevsw = {
.d_version = D_VERSION, .d_version = D_VERSION,
.d_flags = 0, .d_flags = 0,
.d_ioctl = wtap_ioctl, .d_ioctl = wtap_ioctl,
.d_name = "wtapctl", .d_name = "wtapctl",
}; };
int int
wtap_ioctl(struct cdev *dev, u_long cmd, caddr_t data, wtap_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
int fflag, struct thread *td) struct thread *td)
{ {
int error = 0; int error = 0;
CURVNET_SET(CRED_TO_VNET(curthread->td_ucred)); CURVNET_SET(CRED_TO_VNET(curthread->td_ucred));
switch(cmd) { switch (cmd) {
case WTAPIOCTLCRT: case WTAPIOCTLCRT:
if(new_wtap(hal, *(int *)data)) if (new_wtap(hal, *(int *)data))
error = EINVAL; error = EINVAL;
break; break;
case WTAPIOCTLDEL: case WTAPIOCTLDEL:
if(free_wtap(hal, *(int *)data)) if (free_wtap(hal, *(int *)data))
error = EINVAL; error = EINVAL;
break; break;
default: default:
DWTAP_PRINTF("Unknown WTAP IOCTL\n"); DWTAP_PRINTF("Unknown WTAP IOCTL\n");
error = EINVAL; error = EINVAL;
} }
CURVNET_RESTORE(); CURVNET_RESTORE();
return error; return error;
} }
/* The function called at load/unload. */ /* The function called at load/unload. */
static int static int
event_handler(module_t module, int event, void *arg) event_handler(module_t module, int event, void *arg)
{ {
struct visibility_plugin *plugin; struct visibility_plugin *plugin;
int e = 0; /* Error, 0 for normal return status */ int e = 0; /* Error, 0 for normal return status */
switch (event) { switch (event) {
case MOD_LOAD: case MOD_LOAD:
sdev = make_dev(&wtap_cdevsw,0,UID_ROOT, sdev = make_dev(&wtap_cdevsw, 0, UID_ROOT, GID_WHEEL, 0600,
GID_WHEEL,0600,(const char *)"wtapctl"); (const char *)"wtapctl");
hal = (struct wtap_hal *)malloc(sizeof(struct wtap_hal), hal = (struct wtap_hal *)malloc(sizeof(struct wtap_hal), M_WTAP,
M_WTAP, M_NOWAIT | M_ZERO); M_NOWAIT | M_ZERO);
bzero(hal, sizeof(struct wtap_hal));
init_hal(hal); init_hal(hal);
/* Setting up a simple plugin */ /* Setting up a simple plugin */
plugin = (struct visibility_plugin *)malloc plugin = (struct visibility_plugin *)
(sizeof(struct visibility_plugin), M_WTAP_PLUGIN, malloc(sizeof(struct visibility_plugin), M_WTAP_PLUGIN,
M_NOWAIT | M_ZERO); M_NOWAIT | M_ZERO);
plugin->base.wp_hal = hal; plugin->base.wp_hal = hal;
plugin->base.init = visibility_init; plugin->base.init = visibility_init;
plugin->base.deinit = visibility_deinit; plugin->base.deinit = visibility_deinit;
plugin->base.work = visibility_work; plugin->base.work = visibility_work;
register_plugin(hal, (struct wtap_plugin *)plugin); register_plugin(hal, (struct wtap_plugin *)plugin);
printf("Loaded wtap wireless simulator\n"); printf("Loaded wtap wireless simulator\n");
break; break;
case MOD_UNLOAD: case MOD_UNLOAD:
destroy_dev(sdev); destroy_dev(sdev);
deregister_plugin(hal); deregister_plugin(hal);
deinit_hal(hal); deinit_hal(hal);
free(hal, M_WTAP); free(hal, M_WTAP);
printf("Unloading wtap wireless simulator\n"); printf("Unloading wtap wireless simulator\n");
break; break;
default: default:
e = EOPNOTSUPP; /* Error, Operation Not Supported */ e = EOPNOTSUPP; /* Error, Operation Not Supported */
break; break;
} }
return(e); return (e);
} }
/* The second argument of DECLARE_MODULE. */ /* The second argument of DECLARE_MODULE. */
static moduledata_t wtap_conf = { static moduledata_t wtap_conf = {
"wtap", /* module name */ "wtap", /* module name */
event_handler, /* event handler */ event_handler, /* event handler */
NULL /* extra data */ NULL /* extra data */
}; };
DECLARE_MODULE(wtap, wtap_conf, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); DECLARE_MODULE(wtap, wtap_conf, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
MODULE_DEPEND(wtap, wlan, 1, 1, 1); /* 802.11 media layer */ MODULE_DEPEND(wtap, wlan, 1, 1, 1); /* 802.11 media layer */