diff options
Diffstat (limited to 'package/broadcom-wl/src/wlc/ioctl.c')
| -rw-r--r-- | package/broadcom-wl/src/wlc/ioctl.c | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/package/broadcom-wl/src/wlc/ioctl.c b/package/broadcom-wl/src/wlc/ioctl.c new file mode 100644 index 0000000000..6c676c7c9b --- /dev/null +++ b/package/broadcom-wl/src/wlc/ioctl.c @@ -0,0 +1,298 @@ +/* + * Wireless network adapter utilities + * + * Copyright 2006, Broadcom Corporation + * All Rights Reserved. + * + * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY + * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM + * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS + * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE. + * + * $Id: wl.c,v 1.1.1.11 2006/02/27 03:43:20 honor Exp $ + */ +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <errno.h> +#include <sys/ioctl.h> +#include <net/if.h> +#include <linux/types.h> + +typedef u_int64_t u64; +typedef u_int32_t u32; +typedef u_int16_t u16; +typedef u_int8_t u8; +#include <linux/sockios.h> +#include <linux/ethtool.h> + +#include <typedefs.h> +#include <wlioctl.h> +#include <bcmutils.h> +#include <wlutils.h> + +int +wl_ioctl(char *name, int cmd, void *buf, int len) +{ + struct ifreq ifr; + wl_ioctl_t ioc; + int ret = 0; + int s; + + /* open socket to kernel */ + if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { + perror("socket"); + return errno; + } + + /* do it */ + ioc.cmd = cmd; + ioc.buf = buf; + ioc.len = len; + strncpy(ifr.ifr_name, name, IFNAMSIZ); + ifr.ifr_data = (caddr_t) &ioc; + if ((ret = ioctl(s, SIOCDEVPRIVATE, &ifr)) < 0) + + /* cleanup */ + close(s); + return ret; +} + +static inline int +wl_get_dev_type(char *name, void *buf, int len) +{ + int s; + int ret; + struct ifreq ifr; + struct ethtool_drvinfo info; + + /* open socket to kernel */ + if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { + perror("socket"); + return -1; + } + + /* get device type */ + memset(&info, 0, sizeof(info)); + info.cmd = ETHTOOL_GDRVINFO; + ifr.ifr_data = (caddr_t)&info; + strncpy(ifr.ifr_name, name, IFNAMSIZ); + if ((ret = ioctl(s, SIOCETHTOOL, &ifr)) < 0) { + *(char *)buf = '\0'; + } else + strncpy(buf, info.driver, len); + + close(s); + return ret; +} + +int +wl_probe(char *name) +{ + int ret, val; + char buf[3]; + if ((ret = wl_get_dev_type(name, buf, 3)) < 0) + return ret; + /* Check interface */ + if (strncmp(buf, "wl", 2)) + return -1; + if ((ret = wl_ioctl(name, WLC_GET_VERSION, &val, sizeof(val)))) + return ret; + if (val > WLC_IOCTL_VERSION) + return -1; + + return ret; +} + +static int +wl_iovar_getbuf(char *ifname, char *iovar, void *param, int paramlen, void *bufptr, int buflen) +{ + int err; + uint namelen; + uint iolen; + + namelen = strlen(iovar) + 1; /* length of iovar name plus null */ + iolen = namelen + paramlen; + + /* check for overflow */ + if (iolen > buflen) + return (BCME_BUFTOOSHORT); + + memcpy(bufptr, iovar, namelen); /* copy iovar name including null */ + memcpy((int8*)bufptr + namelen, param, paramlen); + + err = wl_ioctl(ifname, WLC_GET_VAR, bufptr, buflen); + + return (err); +} + +static int +wl_iovar_setbuf(char *ifname, char *iovar, void *param, int paramlen, void *bufptr, int buflen) +{ + uint namelen; + uint iolen; + + namelen = strlen(iovar) + 1; /* length of iovar name plus null */ + iolen = namelen + paramlen; + + /* check for overflow */ + if (iolen > buflen) + return (BCME_BUFTOOSHORT); + + memcpy(bufptr, iovar, namelen); /* copy iovar name including null */ + memcpy((int8*)bufptr + namelen, param, paramlen); + + return wl_ioctl(ifname, WLC_SET_VAR, bufptr, iolen); +} + +int +wl_iovar_set(char *ifname, char *iovar, void *param, int paramlen) +{ + char smbuf[WLC_IOCTL_SMLEN]; + + return wl_iovar_setbuf(ifname, iovar, param, paramlen, smbuf, sizeof(smbuf)); +} + +int +wl_iovar_get(char *ifname, char *iovar, void *bufptr, int buflen) +{ + char smbuf[WLC_IOCTL_SMLEN]; + int ret; + + /* use the return buffer if it is bigger than what we have on the stack */ + if (buflen > sizeof(smbuf)) { + ret = wl_iovar_getbuf(ifname, iovar, NULL, 0, bufptr, buflen); + } else { + ret = wl_iovar_getbuf(ifname, iovar, NULL, 0, smbuf, sizeof(smbuf)); + if (ret == 0) + memcpy(bufptr, smbuf, buflen); + } + + return ret; +} + + +/* + * format a bsscfg indexed iovar buffer + */ +static int +wl_bssiovar_mkbuf(char *iovar, int bssidx, void *param, int paramlen, void *bufptr, int buflen, + int *plen) +{ + char *prefix = "bsscfg:"; + int8* p; + uint prefixlen; + uint namelen; + uint iolen; + + prefixlen = strlen(prefix); /* length of bsscfg prefix */ + namelen = strlen(iovar) + 1; /* length of iovar name + null */ + iolen = prefixlen + namelen + sizeof(int) + paramlen; + + /* check for overflow */ + if (buflen < 0 || iolen > (uint)buflen) { + *plen = 0; + return BCME_BUFTOOSHORT; + } + + p = (int8*)bufptr; + + /* copy prefix, no null */ + memcpy(p, prefix, prefixlen); + p += prefixlen; + + /* copy iovar name including null */ + memcpy(p, iovar, namelen); + p += namelen; + + /* bss config index as first param */ + memcpy(p, &bssidx, sizeof(int32)); + p += sizeof(int32); + + /* parameter buffer follows */ + if (paramlen) + memcpy(p, param, paramlen); + + *plen = iolen; + return 0; +} + +/* + * set named & bss indexed driver variable to buffer value + */ +static int +wl_bssiovar_setbuf(char *ifname, char *iovar, int bssidx, void *param, int paramlen, void *bufptr, + int buflen) +{ + int err; + int iolen; + + err = wl_bssiovar_mkbuf(iovar, bssidx, param, paramlen, bufptr, buflen, &iolen); + if (err) + return err; + + return wl_ioctl(ifname, WLC_SET_VAR, bufptr, iolen); +} + +/* + * get named & bss indexed driver variable buffer value + */ +static int +wl_bssiovar_getbuf(char *ifname, char *iovar, int bssidx, void *param, int paramlen, void *bufptr, + int buflen) +{ + int err; + int iolen; + + err = wl_bssiovar_mkbuf(iovar, bssidx, param, paramlen, bufptr, buflen, &iolen); + if (err) + return err; + + return wl_ioctl(ifname, WLC_GET_VAR, bufptr, buflen); +} + +/* + * set named & bss indexed driver variable to buffer value + */ +int +wl_bssiovar_set(char *ifname, char *iovar, int bssidx, void *param, int paramlen) +{ + char smbuf[WLC_IOCTL_SMLEN]; + + return wl_bssiovar_setbuf(ifname, iovar, bssidx, param, paramlen, smbuf, sizeof(smbuf)); +} + +/* + * get named & bss indexed driver variable buffer value + */ +int +wl_bssiovar_get(char *ifname, char *iovar, int bssidx, void *outbuf, int len) +{ + char smbuf[WLC_IOCTL_SMLEN]; + int err; + + /* use the return buffer if it is bigger than what we have on the stack */ + if (len > (int)sizeof(smbuf)) { + err = wl_bssiovar_getbuf(ifname, iovar, bssidx, NULL, 0, outbuf, len); + } else { + memset(smbuf, 0, sizeof(smbuf)); + err = wl_bssiovar_getbuf(ifname, iovar, bssidx, NULL, 0, smbuf, sizeof(smbuf)); + if (err == 0) + memcpy(outbuf, smbuf, len); + } + + return err; +} + +void +wl_printlasterror(char *name) +{ + char err_buf[WLC_IOCTL_SMLEN]; + strcpy(err_buf, "bcmerrstr"); + + fprintf(stderr, "Error: "); + if ( wl_ioctl(name, WLC_GET_VAR, err_buf, sizeof (err_buf)) != 0) + fprintf(stderr, "Error getting the Errorstring from driver\n"); + else + fprintf(stderr, err_buf); +} |