1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright IBM Corp. 2007
* Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
* Frank Pavlic <fpavlic@de.ibm.com>,
* Thomas Spatzier <tspat@de.ibm.com>,
* Frank Blaschka <frank.blaschka@de.ibm.com>
*/
#ifndef __QETH_L3_H__
#define __QETH_L3_H__
#include "qeth_core.h"
#include <linux/hashtable.h>
enum qeth_ip_types {
QETH_IP_TYPE_NORMAL,
QETH_IP_TYPE_VIPA,
QETH_IP_TYPE_RXIP,
};
struct qeth_ipaddr {
struct hlist_node hnode;
enum qeth_ip_types type;
u8 is_multicast:1;
u8 disp_flag:2;
u8 ipato:1; /* ucast only */
/* is changed only for normal ip addresses
* for non-normal addresses it always is 1
*/
int ref_counter;
enum qeth_prot_versions proto;
union {
struct {
__be32 addr;
__be32 mask;
} a4;
struct {
struct in6_addr addr;
unsigned int pfxlen;
} a6;
} u;
};
static inline void qeth_l3_init_ipaddr(struct qeth_ipaddr *addr,
enum qeth_ip_types type,
enum qeth_prot_versions proto)
{
memset(addr, 0, sizeof(*addr));
addr->type = type;
addr->proto = proto;
addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;
addr->ref_counter = 1;
}
static inline bool qeth_l3_addr_match_ip(struct qeth_ipaddr *a1,
struct qeth_ipaddr *a2)
{
if (a1->proto != a2->proto)
return false;
if (a1->proto == QETH_PROT_IPV6)
return ipv6_addr_equal(&a1->u.a6.addr, &a2->u.a6.addr);
return a1->u.a4.addr == a2->u.a4.addr;
}
static inline bool qeth_l3_addr_match_all(struct qeth_ipaddr *a1,
struct qeth_ipaddr *a2)
{
/* Assumes that the pair was obtained via qeth_l3_addr_find_by_ip(),
* so 'proto' and 'addr' match for sure.
*
* For ucast:
* - 'mask'/'pfxlen' for RXIP/VIPA is always 0. For NORMAL, matching
* values are required to avoid mixups in takeover eligibility.
*
* For mcast,
* - 'mask'/'pfxlen' is always 0.
*/
if (a1->type != a2->type)
return false;
if (a1->proto == QETH_PROT_IPV6)
return a1->u.a6.pfxlen == a2->u.a6.pfxlen;
return a1->u.a4.mask == a2->u.a4.mask;
}
static inline u32 qeth_l3_ipaddr_hash(struct qeth_ipaddr *addr)
{
if (addr->proto == QETH_PROT_IPV6)
return ipv6_addr_hash(&addr->u.a6.addr);
else
return ipv4_addr_hash(addr->u.a4.addr);
}
struct qeth_ipato_entry {
struct list_head entry;
enum qeth_prot_versions proto;
char addr[16];
int mask_bits;
};
extern const struct attribute_group *qeth_l3_attr_groups[];
int qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const u8 *addr,
char *buf);
int qeth_l3_create_device_attributes(struct device *);
void qeth_l3_remove_device_attributes(struct device *);
int qeth_l3_setrouting_v4(struct qeth_card *);
int qeth_l3_setrouting_v6(struct qeth_card *);
int qeth_l3_add_ipato_entry(struct qeth_card *, struct qeth_ipato_entry *);
int qeth_l3_del_ipato_entry(struct qeth_card *card,
enum qeth_prot_versions proto, u8 *addr,
int mask_bits);
void qeth_l3_update_ipato(struct qeth_card *card);
int qeth_l3_modify_hsuid(struct qeth_card *card, bool add);
int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,
enum qeth_ip_types type,
enum qeth_prot_versions proto);
#endif /* __QETH_L3_H__ */
|
