patch nvram library for new nas version (thx to Vincent Bernat)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@2952 3c298f89-4303-0410-b956-a3cf2f4a3e73

2 files changed, 216 insertions, 0 deletions

diff --git a/package/nvram/src/wl.c b/package/nvram/src/wl.c
index f09317ad06..5738e2cd04 100644
--- a/package/nvram/src/wl.c
+++ b/package/nvram/src/wl.c
@@ -84,3 +84,216 @@ wl_get_int(char *name, char *var, int *val)
 	return wl_get_val(name, var, val, sizeof(*val));
 }
 
+/**************************************************************************
+ *  The following code is from Broadcom (wl.c)                            *
+ **************************************************************************/
+
+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 (-1);
+
+	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);
+}
+
+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 (-1);
+
+	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;
+}
+
+/* 
+ * set named driver variable to int value
+ * calling example: wl_iovar_setint(ifname, "arate", rate) 
+*/
+int
+wl_iovar_setint(char *ifname, char *iovar, int val)
+{
+	return wl_iovar_set(ifname, iovar, &val, sizeof(val));
+}
+
+/* 
+ * get named driver variable to int value and return error indication 
+ * calling example: wl_iovar_getint(ifname, "arate", &rate) 
+ */
+int
+wl_iovar_getint(char *ifname, char *iovar, int *val)
+{
+	return wl_iovar_get(ifname, iovar, val, sizeof(int));
+}
+
+/* 
+ * 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 -1;
+	}
+
+	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
+ */
+int
+wl_bssiovar_setbuf(char *ifname, char *iovar, int bssidx, void *param, 
+		   int paramlen, void *bufptr, int buflen)
+{
+	int err;
+	uint 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
+ */
+int
+wl_bssiovar_getbuf(char *ifname, char *iovar, int bssidx, void *param, 
+		   int paramlen, void *bufptr, int buflen)
+{
+	int err;
+	uint 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;
+}
+
+/* 
+ * set named & bss indexed driver variable to int value
+ */
+int
+wl_bssiovar_setint(char *ifname, char *iovar, int bssidx, int val)
+{
+	return wl_bssiovar_set(ifname, iovar, bssidx, &val, sizeof(int));
+}
diff --git a/target/linux/package/base-files/include/wlioctl.h b/target/linux/package/base-files/include/wlioctl.h
index d5ef11f9ed..66783cc44d 100644
--- a/target/linux/package/base-files/include/wlioctl.h
+++ b/target/linux/package/base-files/include/wlioctl.h
@@ -649,6 +649,9 @@ typedef struct wlc_rev_info {
 /* maximum length buffer required */
 #define WLC_IOCTL_MAXLEN	8192
 
+/* maximum length buffer required */
+#define WLC_IOCTL_SMLEN         256
+
 /* common ioctl definitions */
 #define WLC_GET_MAGIC				0
 #define WLC_GET_VERSION				1