Release 4.8 net/netfilter/ipset/ip_set_hash_mac.c
/* Copyright (C) 2014 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
*
* 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 hash:mac type */
#include <linux/jhash.h>
#include <linux/module.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/errno.h>
#include <linux/if_ether.h>
#include <net/netlink.h>
#include <linux/netfilter.h>
#include <linux/netfilter/ipset/ip_set.h>
#include <linux/netfilter/ipset/ip_set_hash.h>
#define IPSET_TYPE_REV_MIN 0
#define IPSET_TYPE_REV_MAX 0
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
IP_SET_MODULE_DESC("hash:mac", IPSET_TYPE_REV_MIN, IPSET_TYPE_REV_MAX);
MODULE_ALIAS("ip_set_hash:mac");
/* Type specific function prefix */
#define HTYPE hash_mac
/* Member elements */
struct hash_mac4_elem {
/* Zero valued IP addresses cannot be stored */
union {
unsigned char ether[ETH_ALEN];
__be32 foo[2];
};
};
/* Common functions */
static inline bool
hash_mac4_data_equal(const struct hash_mac4_elem *e1,
const struct hash_mac4_elem *e2,
u32 *multi)
{
return ether_addr_equal(e1->ether, e2->ether);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jozsef kadlecsik | jozsef kadlecsik | 35 | 100.00% | 1 | 100.00% |
| Total | 35 | 100.00% | 1 | 100.00% |
static inline bool
hash_mac4_data_list(struct sk_buff *skb, const struct hash_mac4_elem *e)
{
if (nla_put(skb, IPSET_ATTR_ETHER, ETH_ALEN, e->ether))
goto nla_put_failure;
return false;
nla_put_failure:
return true;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jozsef kadlecsik | jozsef kadlecsik | 31 | 70.45% | 1 | 50.00% |
| sergey popovich | sergey popovich | 13 | 29.55% | 1 | 50.00% |
| Total | 44 | 100.00% | 2 | 100.00% |
static inline void
hash_mac4_data_next(struct hash_mac4_elem *next,
const struct hash_mac4_elem *e)
{
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jozsef kadlecsik | jozsef kadlecsik | 17 | 100.00% | 1 | 100.00% |
| Total | 17 | 100.00% | 1 | 100.00% |
#define MTYPE hash_mac4
#define HOST_MASK 32
#define IP_SET_EMIT_CREATE
#define IP_SET_PROTO_UNDEF
#include "ip_set_hash_gen.h"
/* Zero valued element is not supported */
static const unsigned char invalid_ether[ETH_ALEN] = { 0 };
static int
hash_mac4_kadt(struct ip_set *set, const struct sk_buff *skb,
const struct xt_action_param *par,
enum ipset_adt adt, struct ip_set_adt_opt *opt)
{
ipset_adtfn adtfn = set->variant->adt[adt];
struct hash_mac4_elem e = { { .foo[0] = 0, .foo[1] = 0 } };
struct ip_set_ext ext = IP_SET_INIT_KEXT(skb, opt, set);
/* MAC can be src only */
if (!(opt->flags & IPSET_DIM_ONE_SRC))
return 0;
if (skb_mac_header(skb) < skb->head ||
(skb_mac_header(skb) + ETH_HLEN) > skb->data)
return -EINVAL;
ether_addr_copy(e.ether, eth_hdr(skb)->h_source);
if (memcmp(e.ether, invalid_ether, ETH_ALEN) == 0)
return -EINVAL;
return adtfn(set, &e, &ext, &opt->ext, opt->cmdflags);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jozsef kadlecsik | jozsef kadlecsik | 178 | 100.00% | 2 | 100.00% |
| Total | 178 | 100.00% | 2 | 100.00% |
static int
hash_mac4_uadt(struct ip_set *set, struct nlattr *tb[],
enum ipset_adt adt, u32 *lineno, u32 flags, bool retried)
{
ipset_adtfn adtfn = set->variant->adt[adt];
struct hash_mac4_elem e = { { .foo[0] = 0, .foo[1] = 0 } };
struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
int ret;
if (tb[IPSET_ATTR_LINENO])
*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
if (unlikely(!tb[IPSET_ATTR_ETHER] ||
nla_len(tb[IPSET_ATTR_ETHER]) != ETH_ALEN))
return -IPSET_ERR_PROTOCOL;
ret = ip_set_get_extensions(set, tb, &ext);
if (ret)
return ret;
ether_addr_copy(e.ether, nla_data(tb[IPSET_ATTR_ETHER]));
if (memcmp(e.ether, invalid_ether, ETH_ALEN) == 0)
return -IPSET_ERR_HASH_ELEM;
return adtfn(set, &e, &ext, &ext, flags);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jozsef kadlecsik | jozsef kadlecsik | 177 | 92.19% | 3 | 75.00% |
| sergey popovich | sergey popovich | 15 | 7.81% | 1 | 25.00% |
| Total | 192 | 100.00% | 4 | 100.00% |
static struct ip_set_type hash_mac_type __read_mostly = {
.name = "hash:mac",
.protocol = IPSET_PROTOCOL,
.features = IPSET_TYPE_MAC,
.dimension = IPSET_DIM_ONE,
.family = NFPROTO_UNSPEC,
.revision_min = IPSET_TYPE_REV_MIN,
.revision_max = IPSET_TYPE_REV_MAX,
.create = hash_mac_create,
.create_policy = {
[IPSET_ATTR_HASHSIZE] = { .type = NLA_U32 },
[IPSET_ATTR_MAXELEM] = { .type = NLA_U32 },
[IPSET_ATTR_PROBES] = { .type = NLA_U8 },
[IPSET_ATTR_RESIZE] = { .type = NLA_U8 },
[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
[IPSET_ATTR_CADT_FLAGS] = { .type = NLA_U32 },
},
.adt_policy = {
[IPSET_ATTR_ETHER] = { .type = NLA_BINARY,
.len = ETH_ALEN },
[IPSET_ATTR_TIMEOUT] = { .type = NLA_U32 },
[IPSET_ATTR_LINENO] = { .type = NLA_U32 },
[IPSET_ATTR_BYTES] = { .type = NLA_U64 },
[IPSET_ATTR_PACKETS] = { .type = NLA_U64 },
[IPSET_ATTR_COMMENT] = { .type = NLA_NUL_STRING,
.len = IPSET_MAX_COMMENT_SIZE },
[IPSET_ATTR_SKBMARK] = { .type = NLA_U64 },
[IPSET_ATTR_SKBPRIO] = { .type = NLA_U32 },
[IPSET_ATTR_SKBQUEUE] = { .type = NLA_U16 },
},
.me = THIS_MODULE,
};
static int __init
hash_mac_init(void)
{
return ip_set_type_register(&hash_mac_type);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jozsef kadlecsik | jozsef kadlecsik | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
static void __exit
hash_mac_fini(void)
{
rcu_barrier();
ip_set_type_unregister(&hash_mac_type);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jozsef kadlecsik | jozsef kadlecsik | 18 | 100.00% | 2 | 100.00% |
| Total | 18 | 100.00% | 2 | 100.00% |
module_init(hash_mac_init);
module_exit(hash_mac_fini);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jozsef kadlecsik | jozsef kadlecsik | 840 | 96.22% | 4 | 57.14% |
| sergey popovich | sergey popovich | 33 | 3.78% | 3 | 42.86% |
| Total | 873 | 100.00% | 7 | 100.00% |
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