1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright IBM Corp. 2007 4 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, 5 * Frank Pavlic <fpavlic@de.ibm.com>, 6 * Thomas Spatzier <tspat@de.ibm.com>, 7 * Frank Blaschka <frank.blaschka@de.ibm.com> 8 */ 9 10 #ifndef __QETH_L3_H__ 11 #define __QETH_L3_H__ 12 13 #include "qeth_core.h" 14 #include <linux/hashtable.h> 15 16 #define QETH_SNIFF_AVAIL 0x0008 17 18 struct qeth_ipaddr { 19 struct hlist_node hnode; 20 enum qeth_ip_types type; 21 enum qeth_ipa_setdelip_flags set_flags; 22 enum qeth_ipa_setdelip_flags del_flags; 23 u8 is_multicast:1; 24 u8 in_progress:1; 25 u8 disp_flag:2; 26 27 /* is changed only for normal ip addresses 28 * for non-normal addresses it always is 1 29 */ 30 int ref_counter; 31 enum qeth_prot_versions proto; 32 unsigned char mac[ETH_ALEN]; 33 union { 34 struct { 35 unsigned int addr; 36 unsigned int mask; 37 } a4; 38 struct { 39 struct in6_addr addr; 40 unsigned int pfxlen; 41 } a6; 42 } u; 43 }; 44 45 static inline bool qeth_l3_addr_match_ip(struct qeth_ipaddr *a1, 46 struct qeth_ipaddr *a2) 47 { 48 if (a1->proto != a2->proto) 49 return false; 50 if (a1->proto == QETH_PROT_IPV6) 51 return ipv6_addr_equal(&a1->u.a6.addr, &a2->u.a6.addr); 52 return a1->u.a4.addr == a2->u.a4.addr; 53 } 54 55 static inline bool qeth_l3_addr_match_all(struct qeth_ipaddr *a1, 56 struct qeth_ipaddr *a2) 57 { 58 /* Assumes that the pair was obtained via qeth_l3_addr_find_by_ip(), 59 * so 'proto' and 'addr' match for sure. 60 * 61 * For ucast: 62 * - 'mac' is always 0. 63 * - 'mask'/'pfxlen' for RXIP/VIPA is always 0. For NORMAL, matching 64 * values are required to avoid mixups in takeover eligibility. 65 * 66 * For mcast, 67 * - 'mac' is mapped from the IP, and thus always matches. 68 * - 'mask'/'pfxlen' is always 0. 69 */ 70 if (a1->type != a2->type) 71 return false; 72 if (a1->proto == QETH_PROT_IPV6) 73 return a1->u.a6.pfxlen == a2->u.a6.pfxlen; 74 return a1->u.a4.mask == a2->u.a4.mask; 75 } 76 77 static inline u64 qeth_l3_ipaddr_hash(struct qeth_ipaddr *addr) 78 { 79 u64 ret = 0; 80 u8 *point; 81 82 if (addr->proto == QETH_PROT_IPV6) { 83 point = (u8 *) &addr->u.a6.addr; 84 ret = get_unaligned((u64 *)point) ^ 85 get_unaligned((u64 *) (point + 8)); 86 } 87 if (addr->proto == QETH_PROT_IPV4) { 88 point = (u8 *) &addr->u.a4.addr; 89 ret = get_unaligned((u32 *) point); 90 } 91 return ret; 92 } 93 94 struct qeth_ipato_entry { 95 struct list_head entry; 96 enum qeth_prot_versions proto; 97 char addr[16]; 98 int mask_bits; 99 }; 100 101 extern const struct attribute_group *qeth_l3_attr_groups[]; 102 103 void qeth_l3_ipaddr_to_string(enum qeth_prot_versions, const __u8 *, char *); 104 int qeth_l3_create_device_attributes(struct device *); 105 void qeth_l3_remove_device_attributes(struct device *); 106 int qeth_l3_setrouting_v4(struct qeth_card *); 107 int qeth_l3_setrouting_v6(struct qeth_card *); 108 int qeth_l3_add_ipato_entry(struct qeth_card *, struct qeth_ipato_entry *); 109 int qeth_l3_del_ipato_entry(struct qeth_card *card, 110 enum qeth_prot_versions proto, u8 *addr, 111 int mask_bits); 112 int qeth_l3_add_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *); 113 int qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto, 114 const u8 *addr); 115 int qeth_l3_add_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *); 116 int qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto, 117 const u8 *addr); 118 void qeth_l3_update_ipato(struct qeth_card *card); 119 struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions); 120 int qeth_l3_add_ip(struct qeth_card *, struct qeth_ipaddr *); 121 int qeth_l3_delete_ip(struct qeth_card *, struct qeth_ipaddr *); 122 123 #endif /* __QETH_L3_H__ */ 124