From bc76594d91f3953d676201e3f06534338ab01524 Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Thu, 3 Feb 2011 11:44:27 +0100 Subject: Reorganized kernel/ subdir The kernel/ subdirectory is reorganized to follow the kernel directory structure. --- kernel/ip_set_bitmap_port.c | 515 -------------------------------------------- 1 file changed, 515 deletions(-) delete mode 100644 kernel/ip_set_bitmap_port.c (limited to 'kernel/ip_set_bitmap_port.c') diff --git a/kernel/ip_set_bitmap_port.c b/kernel/ip_set_bitmap_port.c deleted file mode 100644 index 165f09b..0000000 --- a/kernel/ip_set_bitmap_port.c +++ /dev/null @@ -1,515 +0,0 @@ -/* Copyright (C) 2003-2011 Jozsef Kadlecsik - * - * 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. - */ - -/* Kernel module implementing an IP set type: the bitmap:port type */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#define IP_SET_BITMAP_TIMEOUT -#include - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Jozsef Kadlecsik "); -MODULE_DESCRIPTION("bitmap:port type of IP sets"); -MODULE_ALIAS("ip_set_bitmap:port"); - -/* Type structure */ -struct bitmap_port { - void *members; /* the set members */ - u16 first_port; /* host byte order, included in range */ - u16 last_port; /* host byte order, included in range */ - size_t memsize; /* members size */ - u32 timeout; /* timeout parameter */ - struct timer_list gc; /* garbage collection */ -}; - -/* Base variant */ - -static int -bitmap_port_test(struct ip_set *set, void *value, u32 timeout) -{ - const struct bitmap_port *map = set->data; - u16 id = *(u16 *)value; - - return !!test_bit(id, map->members); -} - -static int -bitmap_port_add(struct ip_set *set, void *value, u32 timeout) -{ - struct bitmap_port *map = set->data; - u16 id = *(u16 *)value; - - if (test_and_set_bit(id, map->members)) - return -IPSET_ERR_EXIST; - - return 0; -} - -static int -bitmap_port_del(struct ip_set *set, void *value, u32 timeout) -{ - struct bitmap_port *map = set->data; - u16 id = *(u16 *)value; - - if (!test_and_clear_bit(id, map->members)) - return -IPSET_ERR_EXIST; - - return 0; -} - -static int -bitmap_port_list(const struct ip_set *set, - struct sk_buff *skb, struct netlink_callback *cb) -{ - const struct bitmap_port *map = set->data; - struct nlattr *atd, *nested; - u16 id, first = cb->args[2]; - u16 last = map->last_port - map->first_port; - - atd = ipset_nest_start(skb, IPSET_ATTR_ADT); - if (!atd) - return -EMSGSIZE; - for (; cb->args[2] <= last; cb->args[2]++) { - id = cb->args[2]; - if (!test_bit(id, map->members)) - continue; - nested = ipset_nest_start(skb, IPSET_ATTR_DATA); - if (!nested) { - if (id == first) { - nla_nest_cancel(skb, atd); - return -EMSGSIZE; - } else - goto nla_put_failure; - } - NLA_PUT_NET16(skb, IPSET_ATTR_PORT, - htons(map->first_port + id)); - ipset_nest_end(skb, nested); - } - ipset_nest_end(skb, atd); - /* Set listing finished */ - cb->args[2] = 0; - - return 0; - -nla_put_failure: - nla_nest_cancel(skb, nested); - ipset_nest_end(skb, atd); - if (unlikely(id == first)) { - cb->args[2] = 0; - return -EMSGSIZE; - } - return 0; -} - -/* Timeout variant */ - -static int -bitmap_port_ttest(struct ip_set *set, void *value, u32 timeout) -{ - const struct bitmap_port *map = set->data; - const unsigned long *members = map->members; - u16 id = *(u16 *)value; - - return ip_set_timeout_test(members[id]); -} - -static int -bitmap_port_tadd(struct ip_set *set, void *value, u32 timeout) -{ - struct bitmap_port *map = set->data; - unsigned long *members = map->members; - u16 id = *(u16 *)value; - - if (ip_set_timeout_test(members[id])) - return -IPSET_ERR_EXIST; - - members[id] = ip_set_timeout_set(timeout); - - return 0; -} - -static int -bitmap_port_tdel(struct ip_set *set, void *value, u32 timeout) -{ - struct bitmap_port *map = set->data; - unsigned long *members = map->members; - u16 id = *(u16 *)value; - int ret = -IPSET_ERR_EXIST; - - if (ip_set_timeout_test(members[id])) - ret = 0; - - members[id] = IPSET_ELEM_UNSET; - return ret; -} - -static int -bitmap_port_tlist(const struct ip_set *set, - struct sk_buff *skb, struct netlink_callback *cb) -{ - const struct bitmap_port *map = set->data; - struct nlattr *adt, *nested; - u16 id, first = cb->args[2]; - u16 last = map->last_port - map->first_port; - const unsigned long *members = map->members; - - adt = ipset_nest_start(skb, IPSET_ATTR_ADT); - if (!adt) - return -EMSGSIZE; - for (; cb->args[2] <= last; cb->args[2]++) { - id = cb->args[2]; - if (!ip_set_timeout_test(members[id])) - continue; - nested = ipset_nest_start(skb, IPSET_ATTR_DATA); - if (!nested) { - if (id == first) { - nla_nest_cancel(skb, adt); - return -EMSGSIZE; - } else - goto nla_put_failure; - } - NLA_PUT_NET16(skb, IPSET_ATTR_PORT, - htons(map->first_port + id)); - NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT, - htonl(ip_set_timeout_get(members[id]))); - ipset_nest_end(skb, nested); - } - ipset_nest_end(skb, adt); - - /* Set listing finished */ - cb->args[2] = 0; - - return 0; - -nla_put_failure: - nla_nest_cancel(skb, nested); - ipset_nest_end(skb, adt); - if (unlikely(id == first)) { - cb->args[2] = 0; - return -EMSGSIZE; - } - return 0; -} - -static int -bitmap_port_kadt(struct ip_set *set, const struct sk_buff *skb, - enum ipset_adt adt, u8 pf, u8 dim, u8 flags) -{ - struct bitmap_port *map = set->data; - ipset_adtfn adtfn = set->variant->adt[adt]; - __be16 __port; - u16 port = 0; - - if (!ip_set_get_ip_port(skb, pf, flags & IPSET_DIM_ONE_SRC, &__port)) - return -EINVAL; - - port = ntohs(__port); - - if (port < map->first_port || port > map->last_port) - return -IPSET_ERR_BITMAP_RANGE; - - port -= map->first_port; - - return adtfn(set, &port, map->timeout); -} - -static int -bitmap_port_uadt(struct ip_set *set, struct nlattr *tb[], - enum ipset_adt adt, u32 *lineno, u32 flags) -{ - struct bitmap_port *map = set->data; - ipset_adtfn adtfn = set->variant->adt[adt]; - u32 timeout = map->timeout; - u32 port; /* wraparound */ - u16 id, port_to; - int ret = 0; - - if (unlikely(!ip_set_attr_netorder(tb, IPSET_ATTR_PORT) || - !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) || - !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT))) - return -IPSET_ERR_PROTOCOL; - - if (tb[IPSET_ATTR_LINENO]) - *lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]); - - port = ip_set_get_h16(tb[IPSET_ATTR_PORT]); - if (port < map->first_port || port > map->last_port) - return -IPSET_ERR_BITMAP_RANGE; - - if (tb[IPSET_ATTR_TIMEOUT]) { - if (!with_timeout(map->timeout)) - return -IPSET_ERR_TIMEOUT; - timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]); - } - - if (adt == IPSET_TEST) { - id = port - map->first_port; - return adtfn(set, &id, timeout); - } - - if (tb[IPSET_ATTR_PORT_TO]) { - port_to = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]); - if (port > port_to) { - swap(port, port_to); - if (port < map->first_port) - return -IPSET_ERR_BITMAP_RANGE; - } - } else - port_to = port; - - if (port_to > map->last_port) - return -IPSET_ERR_BITMAP_RANGE; - - for (; port <= port_to; port++) { - id = port - map->first_port; - ret = adtfn(set, &id, timeout); - - if (ret && !ip_set_eexist(ret, flags)) - return ret; - else - ret = 0; - } - return ret; -} - -static void -bitmap_port_destroy(struct ip_set *set) -{ - struct bitmap_port *map = set->data; - - if (with_timeout(map->timeout)) - del_timer_sync(&map->gc); - - ip_set_free(map->members); - kfree(map); - - set->data = NULL; -} - -static void -bitmap_port_flush(struct ip_set *set) -{ - struct bitmap_port *map = set->data; - - memset(map->members, 0, map->memsize); -} - -static int -bitmap_port_head(struct ip_set *set, struct sk_buff *skb) -{ - const struct bitmap_port *map = set->data; - struct nlattr *nested; - - nested = ipset_nest_start(skb, IPSET_ATTR_DATA); - if (!nested) - goto nla_put_failure; - NLA_PUT_NET16(skb, IPSET_ATTR_PORT, htons(map->first_port)); - NLA_PUT_NET16(skb, IPSET_ATTR_PORT_TO, htons(map->last_port)); - NLA_PUT_NET32(skb, IPSET_ATTR_REFERENCES, - htonl(atomic_read(&set->ref) - 1)); - NLA_PUT_NET32(skb, IPSET_ATTR_MEMSIZE, - htonl(sizeof(*map) + map->memsize)); - if (with_timeout(map->timeout)) - NLA_PUT_NET32(skb, IPSET_ATTR_TIMEOUT, htonl(map->timeout)); - ipset_nest_end(skb, nested); - - return 0; -nla_put_failure: - return -EMSGSIZE; -} - -static bool -bitmap_port_same_set(const struct ip_set *a, const struct ip_set *b) -{ - const struct bitmap_port *x = a->data; - const struct bitmap_port *y = b->data; - - return x->first_port == y->first_port && - x->last_port == y->last_port && - x->timeout == y->timeout; -} - -static const struct ip_set_type_variant bitmap_port = { - .kadt = bitmap_port_kadt, - .uadt = bitmap_port_uadt, - .adt = { - [IPSET_ADD] = bitmap_port_add, - [IPSET_DEL] = bitmap_port_del, - [IPSET_TEST] = bitmap_port_test, - }, - .destroy = bitmap_port_destroy, - .flush = bitmap_port_flush, - .head = bitmap_port_head, - .list = bitmap_port_list, - .same_set = bitmap_port_same_set, -}; - -static const struct ip_set_type_variant bitmap_tport = { - .kadt = bitmap_port_kadt, - .uadt = bitmap_port_uadt, - .adt = { - [IPSET_ADD] = bitmap_port_tadd, - [IPSET_DEL] = bitmap_port_tdel, - [IPSET_TEST] = bitmap_port_ttest, - }, - .destroy = bitmap_port_destroy, - .flush = bitmap_port_flush, - .head = bitmap_port_head, - .list = bitmap_port_tlist, - .same_set = bitmap_port_same_set, -}; - -static void -bitmap_port_gc(unsigned long ul_set) -{ - struct ip_set *set = (struct ip_set *) ul_set; - struct bitmap_port *map = set->data; - unsigned long *table = map->members; - u32 id; /* wraparound */ - u16 last = map->last_port - map->first_port; - - /* We run parallel with other readers (test element) - * but adding/deleting new entries is locked out */ - read_lock_bh(&set->lock); - for (id = 0; id <= last; id++) - if (ip_set_timeout_expired(table[id])) - table[id] = IPSET_ELEM_UNSET; - read_unlock_bh(&set->lock); - - map->gc.expires = jiffies + IPSET_GC_PERIOD(map->timeout) * HZ; - add_timer(&map->gc); -} - -static void -bitmap_port_gc_init(struct ip_set *set) -{ - struct bitmap_port *map = set->data; - - init_timer(&map->gc); - map->gc.data = (unsigned long) set; - map->gc.function = bitmap_port_gc; - map->gc.expires = jiffies + IPSET_GC_PERIOD(map->timeout) * HZ; - add_timer(&map->gc); -} - -/* Create bitmap:ip type of sets */ - -static bool -init_map_port(struct ip_set *set, struct bitmap_port *map, - u16 first_port, u16 last_port) -{ - map->members = ip_set_alloc(map->memsize); - if (!map->members) - return false; - map->first_port = first_port; - map->last_port = last_port; - map->timeout = IPSET_NO_TIMEOUT; - - set->data = map; - set->family = AF_UNSPEC; - - return true; -} - -static int -bitmap_port_create(struct ip_set *set, struct nlattr *tb[], - u32 flags) -{ - struct bitmap_port *map; - u16 first_port, last_port; - - if (unlikely(!ip_set_attr_netorder(tb, IPSET_ATTR_PORT) || - !ip_set_attr_netorder(tb, IPSET_ATTR_PORT_TO) || - !ip_set_optattr_netorder(tb, IPSET_ATTR_TIMEOUT))) - return -IPSET_ERR_PROTOCOL; - - first_port = ip_set_get_h16(tb[IPSET_ATTR_PORT]); - last_port = ip_set_get_h16(tb[IPSET_ATTR_PORT_TO]); - if (first_port > last_port) { - u16 tmp = first_port; - - first_port = last_port; - last_port = tmp; - } - - map = kzalloc(sizeof(*map), GFP_KERNEL); - if (!map) - return -ENOMEM; - - if (tb[IPSET_ATTR_TIMEOUT]) { - map->memsize = (last_port - first_port + 1) - * sizeof(unsigned long); - - if (!init_map_port(set, map, first_port, last_port)) { - kfree(map); - return -ENOMEM; - } - - map->timeout = ip_set_timeout_uget(tb[IPSET_ATTR_TIMEOUT]); - set->variant = &bitmap_tport; - - bitmap_port_gc_init(set); - } else { - map->memsize = bitmap_bytes(0, last_port - first_port); - pr_debug("memsize: %zu\n", map->memsize); - if (!init_map_port(set, map, first_port, last_port)) { - kfree(map); - return -ENOMEM; - } - - set->variant = &bitmap_port; - } - return 0; -} - -static struct ip_set_type bitmap_port_type = { - .name = "bitmap:port", - .protocol = IPSET_PROTOCOL, - .features = IPSET_TYPE_PORT, - .dimension = IPSET_DIM_ONE, - .family = AF_UNSPEC, - .revision = 0, - .create = bitmap_port_create, - .create_policy = { - [IPSET_ATTR_PORT] = { .type = NLA_U16 }, - [IPSET_ATTR_PORT_TO] = { .type = NLA_U16 }, - [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 }, - }, - .adt_policy = { - [IPSET_ATTR_PORT] = { .type = NLA_U16 }, - [IPSET_ATTR_PORT_TO] = { .type = NLA_U16 }, - [IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 }, - [IPSET_ATTR_LINENO] = { .type = NLA_U32 }, - }, - .me = THIS_MODULE, -}; - -static int __init -bitmap_port_init(void) -{ - return ip_set_type_register(&bitmap_port_type); -} - -static void __exit -bitmap_port_fini(void) -{ - ip_set_type_unregister(&bitmap_port_type); -} - -module_init(bitmap_port_init); -module_exit(bitmap_port_fini); -- cgit v1.2.3