--- /dev/null
+/*********************************************************************
+ *
+ * Filename: irlan_filter.c
+ * Version:
+ * Description:
+ * Status: Experimental.
+ * Author: Dag Brattli <dagb@cs.uit.no>
+ * Created at: Fri Jan 29 11:16:38 1999
+ * Modified at: Sat Oct 30 12:58:45 1999
+ * Modified by: Dag Brattli <dagb@cs.uit.no>
+ *
+ * Copyright (c) 1998-1999 Dag Brattli, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * Neither Dag Brattli nor University of Tromsø admit liability nor
+ * provide warranty for any of this software. This material is
+ * provided "AS-IS" and at no charge.
+ *
+ ********************************************************************/
+
+#include <linux/skbuff.h>
+#include <linux/random.h>
+#include <linux/seq_file.h>
+
+#include <net/irda/irlan_common.h>
+#include <net/irda/irlan_filter.h>
+
+/*
+ * Function irlan_filter_request (self, skb)
+ *
+ * Handle filter request from client peer device
+ *
+ */
+void irlan_filter_request(struct irlan_cb *self, struct sk_buff *skb)
+{
+ IRDA_ASSERT(self != NULL, return;);
+ IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
+
+ if ((self->provider.filter_type == IRLAN_DIRECTED) &&
+ (self->provider.filter_operation == DYNAMIC))
+ {
+ pr_debug("Giving peer a dynamic Ethernet address\n");
+ self->provider.mac_address[0] = 0x40;
+ self->provider.mac_address[1] = 0x00;
+ self->provider.mac_address[2] = 0x00;
+ self->provider.mac_address[3] = 0x00;
+
+ /* Use arbitration value to generate MAC address */
+ if (self->provider.access_type == ACCESS_PEER) {
+ self->provider.mac_address[4] =
+ self->provider.send_arb_val & 0xff;
+ self->provider.mac_address[5] =
+ (self->provider.send_arb_val >> 8) & 0xff;
+ } else {
+ /* Just generate something for now */
+ get_random_bytes(self->provider.mac_address+4, 1);
+ get_random_bytes(self->provider.mac_address+5, 1);
+ }
+
+ skb->data[0] = 0x00; /* Success */
+ skb->data[1] = 0x03;
+ irlan_insert_string_param(skb, "FILTER_MODE", "NONE");
+ irlan_insert_short_param(skb, "MAX_ENTRY", 0x0001);
+ irlan_insert_array_param(skb, "FILTER_ENTRY",
+ self->provider.mac_address, 6);
+ return;
+ }
+
+ if ((self->provider.filter_type == IRLAN_DIRECTED) &&
+ (self->provider.filter_mode == FILTER))
+ {
+ pr_debug("Directed filter on\n");
+ skb->data[0] = 0x00; /* Success */
+ skb->data[1] = 0x00;
+ return;
+ }
+ if ((self->provider.filter_type == IRLAN_DIRECTED) &&
+ (self->provider.filter_mode == NONE))
+ {
+ pr_debug("Directed filter off\n");
+ skb->data[0] = 0x00; /* Success */
+ skb->data[1] = 0x00;
+ return;
+ }
+
+ if ((self->provider.filter_type == IRLAN_BROADCAST) &&
+ (self->provider.filter_mode == FILTER))
+ {
+ pr_debug("Broadcast filter on\n");
+ skb->data[0] = 0x00; /* Success */
+ skb->data[1] = 0x00;
+ return;
+ }
+ if ((self->provider.filter_type == IRLAN_BROADCAST) &&
+ (self->provider.filter_mode == NONE))
+ {
+ pr_debug("Broadcast filter off\n");
+ skb->data[0] = 0x00; /* Success */
+ skb->data[1] = 0x00;
+ return;
+ }
+ if ((self->provider.filter_type == IRLAN_MULTICAST) &&
+ (self->provider.filter_mode == FILTER))
+ {
+ pr_debug("Multicast filter on\n");
+ skb->data[0] = 0x00; /* Success */
+ skb->data[1] = 0x00;
+ return;
+ }
+ if ((self->provider.filter_type == IRLAN_MULTICAST) &&
+ (self->provider.filter_mode == NONE))
+ {
+ pr_debug("Multicast filter off\n");
+ skb->data[0] = 0x00; /* Success */
+ skb->data[1] = 0x00;
+ return;
+ }
+ if ((self->provider.filter_type == IRLAN_MULTICAST) &&
+ (self->provider.filter_operation == GET))
+ {
+ pr_debug("Multicast filter get\n");
+ skb->data[0] = 0x00; /* Success? */
+ skb->data[1] = 0x02;
+ irlan_insert_string_param(skb, "FILTER_MODE", "NONE");
+ irlan_insert_short_param(skb, "MAX_ENTRY", 16);
+ return;
+ }
+ skb->data[0] = 0x00; /* Command not supported */
+ skb->data[1] = 0x00;
+
+ pr_debug("Not implemented!\n");
+}
+
+/*
+ * Function check_request_param (self, param, value)
+ *
+ * Check parameters in request from peer device
+ *
+ */
+void irlan_check_command_param(struct irlan_cb *self, char *param, char *value)
+{
+ IRDA_ASSERT(self != NULL, return;);
+ IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;);
+
+ pr_debug("%s, %s\n", param, value);
+
+ /*
+ * This is experimental!! DB.
+ */
+ if (strcmp(param, "MODE") == 0) {
+ self->use_udata = TRUE;
+ return;
+ }
+
+ /*
+ * FILTER_TYPE
+ */
+ if (strcmp(param, "FILTER_TYPE") == 0) {
+ if (strcmp(value, "DIRECTED") == 0) {
+ self->provider.filter_type = IRLAN_DIRECTED;
+ return;
+ }
+ if (strcmp(value, "MULTICAST") == 0) {
+ self->provider.filter_type = IRLAN_MULTICAST;
+ return;
+ }
+ if (strcmp(value, "BROADCAST") == 0) {
+ self->provider.filter_type = IRLAN_BROADCAST;
+ return;
+ }
+ }
+ /*
+ * FILTER_MODE
+ */
+ if (strcmp(param, "FILTER_MODE") == 0) {
+ if (strcmp(value, "ALL") == 0) {
+ self->provider.filter_mode = ALL;
+ return;
+ }
+ if (strcmp(value, "FILTER") == 0) {
+ self->provider.filter_mode = FILTER;
+ return;
+ }
+ if (strcmp(value, "NONE") == 0) {
+ self->provider.filter_mode = FILTER;
+ return;
+ }
+ }
+ /*
+ * FILTER_OPERATION
+ */
+ if (strcmp(param, "FILTER_OPERATION") == 0) {
+ if (strcmp(value, "DYNAMIC") == 0) {
+ self->provider.filter_operation = DYNAMIC;
+ return;
+ }
+ if (strcmp(value, "GET") == 0) {
+ self->provider.filter_operation = GET;
+ return;
+ }
+ }
+}
+
+/*
+ * Function irlan_print_filter (filter_type, buf)
+ *
+ * Print status of filter. Used by /proc file system
+ *
+ */
+#ifdef CONFIG_PROC_FS
+#define MASK2STR(m,s) { .mask = m, .str = s }
+
+void irlan_print_filter(struct seq_file *seq, int filter_type)
+{
+ static struct {
+ int mask;
+ const char *str;
+ } filter_mask2str[] = {
+ MASK2STR(IRLAN_DIRECTED, "DIRECTED"),
+ MASK2STR(IRLAN_FUNCTIONAL, "FUNCTIONAL"),
+ MASK2STR(IRLAN_GROUP, "GROUP"),
+ MASK2STR(IRLAN_MAC_FRAME, "MAC_FRAME"),
+ MASK2STR(IRLAN_MULTICAST, "MULTICAST"),
+ MASK2STR(IRLAN_BROADCAST, "BROADCAST"),
+ MASK2STR(IRLAN_IPX_SOCKET, "IPX_SOCKET"),
+ MASK2STR(0, NULL)
+ }, *p;
+
+ for (p = filter_mask2str; p->str; p++) {
+ if (filter_type & p->mask)
+ seq_printf(seq, "%s ", p->str);
+ }
+ seq_putc(seq, '\n');
+}
+#undef MASK2STR
+#endif
Code Review / kvmfornfv.git / blobdiff