From 2c7e3030edb84abae14042f7a1a22b44255324be Mon Sep 17 00:00:00 2001 From: Sander Vrijders Date: Wed, 20 Sep 2017 13:56:17 +0200 Subject: ipcpd: normal: Make PFF policy-based This turns the PDU Forwarding Function of the IPCP into a policy. For now only the simple PFF policy is available. --- src/ipcpd/normal/pol/flat.c | 7 ++ src/ipcpd/normal/pol/flat.h | 6 +- src/ipcpd/normal/pol/link_state.c | 2 +- src/ipcpd/normal/pol/simple_pff.c | 183 ++++++++++++++++++++++++++++++++++++++ src/ipcpd/normal/pol/simple_pff.h | 57 ++++++++++++ 5 files changed, 249 insertions(+), 6 deletions(-) create mode 100644 src/ipcpd/normal/pol/simple_pff.c create mode 100644 src/ipcpd/normal/pol/simple_pff.h (limited to 'src/ipcpd/normal/pol') diff --git a/src/ipcpd/normal/pol/flat.c b/src/ipcpd/normal/pol/flat.c index 0c4648c5..c52ebe38 100644 --- a/src/ipcpd/normal/pol/flat.c +++ b/src/ipcpd/normal/pol/flat.c @@ -30,6 +30,7 @@ #include #include "ipcp.h" +#include "flat.h" #include #include @@ -46,6 +47,12 @@ struct { #define INVALID_ADDRESS 0 +struct pol_addr_auth_ops flat_ops = { + .init = flat_init, + .fini = flat_fini, + .address = flat_address +}; + int flat_init(const void * info) { flat.addr_size = *((uint8_t *) info); diff --git a/src/ipcpd/normal/pol/flat.h b/src/ipcpd/normal/pol/flat.h index 57af591e..fdd06d68 100644 --- a/src/ipcpd/normal/pol/flat.h +++ b/src/ipcpd/normal/pol/flat.h @@ -31,10 +31,6 @@ int flat_fini(void); uint64_t flat_address(void); -struct pol_addr_auth_ops flat_ops = { - .init = flat_init, - .fini = flat_fini, - .address = flat_address -}; +struct pol_addr_auth_ops flat_ops; #endif /* OUROBOROS_IPCPD_NORMAL_FLAT_H */ diff --git a/src/ipcpd/normal/pol/link_state.c b/src/ipcpd/normal/pol/link_state.c index 2823f28e..26370682 100644 --- a/src/ipcpd/normal/pol/link_state.c +++ b/src/ipcpd/normal/pol/link_state.c @@ -404,7 +404,7 @@ static void * calculate_pff(void * o) if (fd == -1) continue; - pff_add(instance->pff, table[i]->dst, fd); + pff_add(instance->pff, table[i]->dst, &fd, 1); } pff_unlock(instance->pff); diff --git a/src/ipcpd/normal/pol/simple_pff.c b/src/ipcpd/normal/pol/simple_pff.c new file mode 100644 index 00000000..28f7aa2e --- /dev/null +++ b/src/ipcpd/normal/pol/simple_pff.c @@ -0,0 +1,183 @@ +/* + * Ouroboros - Copyright (C) 2016 - 2017 + * + * Simple PDU Forwarding Function + * + * Dimitri Staessens + * Sander Vrijders + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., http://www.fsf.org/about/contact/. + */ + +#define _POSIX_C_SOURCE 200112L + +#include "config.h" + +#include +#include + +#include +#include + +#include "simple_pff.h" + +struct pff_i { + struct htable * table; + pthread_rwlock_t lock; +}; + +struct pol_pff_ops simple_pff_ops = { + .create = simple_pff_create, + .destroy = simple_pff_destroy, + .lock = simple_pff_lock, + .unlock = simple_pff_unlock, + .add = simple_pff_add, + .update = simple_pff_update, + .del = simple_pff_del, + .flush = simple_pff_flush, + .nhop = simple_pff_nhop, + .flow_state_change = NULL +}; + +struct pff_i * simple_pff_create(void) +{ + struct pff_i * tmp; + + tmp = malloc(sizeof(*tmp)); + if (tmp == NULL) + return NULL; + + if (pthread_rwlock_init(&tmp->lock, NULL)) { + free(tmp); + return NULL; + } + + tmp->table = htable_create(PFT_SIZE, false); + if (tmp->table == NULL) { + pthread_rwlock_destroy(&tmp->lock); + free(tmp); + return NULL; + } + + return tmp; +} + +void simple_pff_destroy(struct pff_i * pff_i) +{ + assert(pff_i); + + htable_destroy(pff_i->table); + + pthread_rwlock_destroy(&pff_i->lock); + free(pff_i); +} + +void simple_pff_lock(struct pff_i * pff_i) +{ + pthread_rwlock_wrlock(&pff_i->lock); +} + +void simple_pff_unlock(struct pff_i * pff_i) +{ + pthread_rwlock_unlock(&pff_i->lock); +} + +int simple_pff_add(struct pff_i * pff_i, + uint64_t addr, + int * fd, + size_t len) +{ + int * val; + + assert(pff_i); + assert(len > 0); + + val = malloc(sizeof(*val)); + if (val == NULL) + return -ENOMEM; + + *val = fd[0]; + + if (htable_insert(pff_i->table, addr, val)) { + free(val); + return -1; + } + + return 0; +} + +int simple_pff_update(struct pff_i * pff_i, + uint64_t addr, + int * fd, + size_t len) +{ + int * val; + + assert(pff_i); + assert(len > 0); + + val = malloc(sizeof(*val)); + if (val == NULL) + return -ENOMEM; + *val = fd[0]; + + if (htable_delete(pff_i->table, addr)) { + free(val); + return -1; + } + + if (htable_insert(pff_i->table, addr, val)) { + free(val); + return -1; + } + + return 0; +} + +int simple_pff_del(struct pff_i * pff_i, + uint64_t addr) +{ + assert(pff_i); + + if (htable_delete(pff_i->table, addr)) + return -1; + + return 0; +} + +void simple_pff_flush(struct pff_i * pff_i) +{ + assert(pff_i); + + htable_flush(pff_i->table); +} + +int simple_pff_nhop(struct pff_i * pff_i, + uint64_t addr) +{ + int * j; + int fd = -1; + + assert(pff_i); + + pthread_rwlock_rdlock(&pff_i->lock); + + j = (int *) htable_lookup(pff_i->table, addr); + if (j != NULL) + fd = *j; + + pthread_rwlock_unlock(&pff_i->lock); + + return fd; +} diff --git a/src/ipcpd/normal/pol/simple_pff.h b/src/ipcpd/normal/pol/simple_pff.h new file mode 100644 index 00000000..ef34dfee --- /dev/null +++ b/src/ipcpd/normal/pol/simple_pff.h @@ -0,0 +1,57 @@ +/* + * Ouroboros - Copyright (C) 2016 - 2017 + * + * Simple policy for PFF + * + * Dimitri Staessens + * Sander Vrijders + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., http://www.fsf.org/about/contact/. + */ + +#ifndef OUROBOROS_IPCPD_NORMAL_SIMPLE_PFF_H +#define OUROBOROS_IPCPD_NORMAL_SIMPLE_PFF_H + +#include "pol-pff-ops.h" + +struct pff_i * simple_pff_create(void); + +void simple_pff_destroy(struct pff_i * pff_i); + +void simple_pff_lock(struct pff_i * pff_i); + +void simple_pff_unlock(struct pff_i * pff_i); + +int simple_pff_add(struct pff_i * pff_i, + uint64_t addr, + int * fd, + size_t len); + +int simple_pff_update(struct pff_i * pff_i, + uint64_t addr, + int * fd, + size_t len); + +int simple_pff_del(struct pff_i * pff_i, + uint64_t addr); + +void simple_pff_flush(struct pff_i * pff_i); + +/* Returns fd towards next hop */ +int simple_pff_nhop(struct pff_i * pff_i, + uint64_t addr); + +struct pol_pff_ops simple_pff_ops; + +#endif /* OUROBOROS_IPCPD_NORMAL_SIMPLE_PFF_H */ -- cgit v1.2.3