1 /*
2 * Copyright IBM Corp. 2007
3 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
4 * Frank Pavlic <fpavlic@de.ibm.com>,
5 * Thomas Spatzier <tspat@de.ibm.com>,
6 * Frank Blaschka <frank.blaschka@de.ibm.com>
7 */
8
9 #ifndef __QETH_L3_H__
10 #define __QETH_L3_H__
11
12 #include "qeth_core.h"
13 #include <linux/hashtable.h>
14
15 #define QETH_SNIFF_AVAIL 0x0008
16
17 struct qeth_ipaddr {
18 struct hlist_node hnode;
19 enum qeth_ip_types type;
20 enum qeth_ipa_setdelip_flags set_flags;
21 enum qeth_ipa_setdelip_flags del_flags;
22 u8 is_multicast:1;
23 u8 in_progress:1;
24 u8 disp_flag:2;
25
26 /* is changed only for normal ip addresses
27 * for non-normal addresses it always is 1
28 */
29 int ref_counter;
30 enum qeth_prot_versions proto;
31 unsigned char mac[OSA_ADDR_LEN];
32 union {
33 struct {
34 unsigned int addr;
35 unsigned int mask;
36 } a4;
37 struct {
38 struct in6_addr addr;
39 unsigned int pfxlen;
40 } a6;
41 } u;
42 };
43
qeth_l3_addr_match_ip(struct qeth_ipaddr * a1,struct qeth_ipaddr * a2)44 static inline bool qeth_l3_addr_match_ip(struct qeth_ipaddr *a1,
45 struct qeth_ipaddr *a2)
46 {
47 if (a1->proto != a2->proto)
48 return false;
49 if (a1->proto == QETH_PROT_IPV6)
50 return ipv6_addr_equal(&a1->u.a6.addr, &a2->u.a6.addr);
51 return a1->u.a4.addr == a2->u.a4.addr;
52 }
53
qeth_l3_addr_match_all(struct qeth_ipaddr * a1,struct qeth_ipaddr * a2)54 static inline bool qeth_l3_addr_match_all(struct qeth_ipaddr *a1,
55 struct qeth_ipaddr *a2)
56 {
57 /* Assumes that the pair was obtained via qeth_l3_addr_find_by_ip(),
58 * so 'proto' and 'addr' match for sure.
59 *
60 * For ucast:
61 * - 'mac' is always 0.
62 * - 'mask'/'pfxlen' for RXIP/VIPA is always 0. For NORMAL, matching
63 * values are required to avoid mixups in takeover eligibility.
64 *
65 * For mcast,
66 * - 'mac' is mapped from the IP, and thus always matches.
67 * - 'mask'/'pfxlen' is always 0.
68 */
69 if (a1->type != a2->type)
70 return false;
71 if (a1->proto == QETH_PROT_IPV6)
72 return a1->u.a6.pfxlen == a2->u.a6.pfxlen;
73 return a1->u.a4.mask == a2->u.a4.mask;
74 }
75
qeth_l3_ipaddr_hash(struct qeth_ipaddr * addr)76 static inline u64 qeth_l3_ipaddr_hash(struct qeth_ipaddr *addr)
77 {
78 u64 ret = 0;
79 u8 *point;
80
81 if (addr->proto == QETH_PROT_IPV6) {
82 point = (u8 *) &addr->u.a6.addr;
83 ret = get_unaligned((u64 *)point) ^
84 get_unaligned((u64 *) (point + 8));
85 }
86 if (addr->proto == QETH_PROT_IPV4) {
87 point = (u8 *) &addr->u.a4.addr;
88 ret = get_unaligned((u32 *) point);
89 }
90 return ret;
91 }
92
93 struct qeth_ipato_entry {
94 struct list_head entry;
95 enum qeth_prot_versions proto;
96 char addr[16];
97 int mask_bits;
98 };
99
100
101 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions, const __u8 *, char *);
102 int qeth_l3_string_to_ipaddr(const char *, enum qeth_prot_versions, __u8 *);
103 int qeth_l3_create_device_attributes(struct device *);
104 void qeth_l3_remove_device_attributes(struct device *);
105 int qeth_l3_setrouting_v4(struct qeth_card *);
106 int qeth_l3_setrouting_v6(struct qeth_card *);
107 int qeth_l3_add_ipato_entry(struct qeth_card *, struct qeth_ipato_entry *);
108 void qeth_l3_del_ipato_entry(struct qeth_card *, enum qeth_prot_versions,
109 u8 *, int);
110 int qeth_l3_add_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
111 void qeth_l3_del_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
112 int qeth_l3_add_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
113 void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions,
114 const u8 *);
115 void qeth_l3_update_ipato(struct qeth_card *card);
116 struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions);
117 int qeth_l3_add_ip(struct qeth_card *, struct qeth_ipaddr *);
118 int qeth_l3_delete_ip(struct qeth_card *, struct qeth_ipaddr *);
119
120 #endif /* __QETH_L3_H__ */
121