/********************************************************************* * * Filename: irlan_filter.c * Version: * Description: * Status: Experimental. * Author: Dag Brattli * Created at: Fri Jan 29 11:16:38 1999 * Modified at: Sat Oct 30 12:58:45 1999 * Modified by: Dag Brattli * * 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 #include #include #include #include /* * 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)) { IRDA_DEBUG(0, "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)) { IRDA_DEBUG(0, "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)) { IRDA_DEBUG(0, "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)) { IRDA_DEBUG(0, "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)) { IRDA_DEBUG(0, "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)) { IRDA_DEBUG(0, "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)) { IRDA_DEBUG(0, "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)) { IRDA_DEBUG(0, "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; IRDA_DEBUG(0, "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_DEBUG(4, "%s()\n", __func__ ); IRDA_ASSERT(self != NULL, return;); IRDA_ASSERT(self->magic == IRLAN_MAGIC, return;); IRDA_DEBUG(4, "%s, %s\n", param, value); /* * This is experimental!! DB. */ if (strcmp(param, "MODE") == 0) { IRDA_DEBUG(0, "%s()\n", __func__ ); 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