diff --git a/core/net/ipv6/multicast/uip-mcast6-route.c b/core/net/ipv6/multicast/uip-mcast6-route.c new file mode 100644 index 000000000..f99a92818 --- /dev/null +++ b/core/net/ipv6/multicast/uip-mcast6-route.c @@ -0,0 +1,133 @@ +/* + * Copyright (c) 2011, Loughborough University - Computer Science + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/** + * \file + * Multicast routing table manipulation + * + * \author + * George Oikonomou - + */ + +#include "contiki.h" +#include "lib/list.h" +#include "lib/memb.h" +#include "net/ip/uip.h" +#include "net/ipv6/multicast/uip-mcast6-route.h" + +#include +#include + +#if UIP_CONF_IPV6 +/*---------------------------------------------------------------------------*/ +/* Size of the multicast routing table */ +#ifdef UIP_MCAST6_ROUTE_CONF_ROUTES +#define UIP_MCAST6_ROUTE_ROUTES UIP_MCAST6_ROUTE_CONF_ROUTES +#else +#define UIP_MCAST6_ROUTE_ROUTES 1 +#endif /* UIP_CONF_DS6_MCAST_ROUTES */ +/*---------------------------------------------------------------------------*/ +LIST(mcast_route_list); +MEMB(mcast_route_memb, uip_mcast6_route_t, UIP_MCAST6_ROUTE_ROUTES); + +static uip_mcast6_route_t *locmcastrt; +/*---------------------------------------------------------------------------*/ +uip_mcast6_route_t * +uip_mcast6_route_lookup(uip_ipaddr_t *group) +{ + locmcastrt = NULL; + for(locmcastrt = list_head(mcast_route_list); + locmcastrt != NULL; + locmcastrt = list_item_next(locmcastrt)) { + if(uip_ipaddr_cmp(&locmcastrt->group, group)) { + return locmcastrt; + } + } + + return NULL; +} +/*---------------------------------------------------------------------------*/ +uip_mcast6_route_t * +uip_mcast6_route_add(uip_ipaddr_t *group) +{ + /* _lookup must return NULL, i.e. the prefix does not exist in our table */ + locmcastrt = uip_mcast6_route_lookup(group); + if(locmcastrt == NULL) { + /* Allocate an entry and add the group to the list */ + locmcastrt = memb_alloc(&mcast_route_memb); + if(locmcastrt == NULL) { + return NULL; + } + list_add(mcast_route_list, locmcastrt); + } + + /* Reaching here means we either found the prefix or allocated a new one */ + + uip_ipaddr_copy(&(locmcastrt->group), group); + + return locmcastrt; +} +/*---------------------------------------------------------------------------*/ +void +uip_mcast6_route_rm(uip_mcast6_route_t *route) +{ + /* Make sure it's actually in the list */ + for(locmcastrt = list_head(mcast_route_list); + locmcastrt != NULL; + locmcastrt = list_item_next(locmcastrt)) { + if(locmcastrt == route) { + list_remove(mcast_route_list, route); + memb_free(&mcast_route_memb, route); + return; + } + } +} +/*---------------------------------------------------------------------------*/ +uip_mcast6_route_t * +uip_mcast6_route_list_head(void) +{ + return list_head(mcast_route_list); +} +/*---------------------------------------------------------------------------*/ +int +uip_mcast6_route_count(void) +{ + return list_length(mcast_route_list); +} +/*---------------------------------------------------------------------------*/ +void +uip_mcast6_route_init() +{ + memb_init(&mcast_route_memb); + list_init(mcast_route_list); +} +/*---------------------------------------------------------------------------*/ + +#endif /* UIP_CONF_IPV6 */ diff --git a/core/net/ipv6/multicast/uip-mcast6-route.h b/core/net/ipv6/multicast/uip-mcast6-route.h new file mode 100644 index 000000000..ef5d43f77 --- /dev/null +++ b/core/net/ipv6/multicast/uip-mcast6-route.h @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2011, Loughborough University - Computer Science + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/** + * \file + * Multicast routing table manipulation + * + * \author + * George Oikonomou - + */ +#ifndef UIP_MCAST6_ROUTE_H_ +#define UIP_MCAST6_ROUTE_H_ + +#include "contiki.h" +#include "net/ip/uip.h" + +#include +/*---------------------------------------------------------------------------*/ +/** \brief An entry in the multicast routing table */ +typedef struct uip_mcast6_route { + struct uip_mcast6_route *next; + uip_ipaddr_t group; + uint32_t lifetime; /* seconds */ + void *dag; /* Pointer to an rpl_dag_t struct */ +} uip_mcast6_route_t; +/*---------------------------------------------------------------------------*/ +/** \name Multicast Routing Table Manipulation */ +/** @{ */ +uip_mcast6_route_t *uip_mcast6_route_lookup(uip_ipaddr_t *group); +uip_mcast6_route_t *uip_mcast6_route_add(uip_ipaddr_t *group); +void uip_mcast6_route_rm(uip_mcast6_route_t *defrt); +int uip_mcast6_route_count(void); +uip_mcast6_route_t *uip_mcast6_route_list_head(void); +/*---------------------------------------------------------------------------*/ +/** + * \brief Multicast routing table init routine + * + * Multicast routing tables are not necessarily required by all + * multicast engines. For instance, trickle multicast does not rely on + * the existence of a routing table. Therefore, this function here + * should be invoked by each engine's init routine only if the relevant + * functionality is required. This is also why this function should not + * get hooked into the uip-ds6 core. + */ +void uip_mcast6_route_init(void); +/** @} */ + +#endif /* UIP_MCAST6_ROUTE_H_ */