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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * Copyright IBM Corp. 20074 * 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 16enum qeth_ip_types {17 QETH_IP_TYPE_NORMAL,18 QETH_IP_TYPE_VIPA,19 QETH_IP_TYPE_RXIP,20};21 22struct qeth_ipaddr {23 struct hlist_node hnode;24 enum qeth_ip_types type;25 u8 is_multicast:1;26 u8 disp_flag:2;27 u8 ipato:1; /* ucast only */28 29 /* is changed only for normal ip addresses30 * for non-normal addresses it always is 131 */32 int ref_counter;33 enum qeth_prot_versions proto;34 union {35 struct {36 __be32 addr;37 __be32 mask;38 } a4;39 struct {40 struct in6_addr addr;41 unsigned int pfxlen;42 } a6;43 } u;44};45 46static inline void qeth_l3_init_ipaddr(struct qeth_ipaddr *addr,47 enum qeth_ip_types type,48 enum qeth_prot_versions proto)49{50 memset(addr, 0, sizeof(*addr));51 addr->type = type;52 addr->proto = proto;53 addr->disp_flag = QETH_DISP_ADDR_DO_NOTHING;54 addr->ref_counter = 1;55}56 57static inline bool qeth_l3_addr_match_ip(struct qeth_ipaddr *a1,58 struct qeth_ipaddr *a2)59{60 if (a1->proto != a2->proto)61 return false;62 if (a1->proto == QETH_PROT_IPV6)63 return ipv6_addr_equal(&a1->u.a6.addr, &a2->u.a6.addr);64 return a1->u.a4.addr == a2->u.a4.addr;65}66 67static inline bool qeth_l3_addr_match_all(struct qeth_ipaddr *a1,68 struct qeth_ipaddr *a2)69{70 /* Assumes that the pair was obtained via qeth_l3_addr_find_by_ip(),71 * so 'proto' and 'addr' match for sure.72 *73 * For ucast:74 * - 'mask'/'pfxlen' for RXIP/VIPA is always 0. For NORMAL, matching75 * values are required to avoid mixups in takeover eligibility.76 *77 * For mcast,78 * - 'mask'/'pfxlen' is always 0.79 */80 if (a1->type != a2->type)81 return false;82 if (a1->proto == QETH_PROT_IPV6)83 return a1->u.a6.pfxlen == a2->u.a6.pfxlen;84 return a1->u.a4.mask == a2->u.a4.mask;85}86 87static inline u32 qeth_l3_ipaddr_hash(struct qeth_ipaddr *addr)88{89 if (addr->proto == QETH_PROT_IPV6)90 return ipv6_addr_hash(&addr->u.a6.addr);91 else92 return ipv4_addr_hash(addr->u.a4.addr);93}94 95struct qeth_ipato_entry {96 struct list_head entry;97 enum qeth_prot_versions proto;98 char addr[16];99 unsigned int mask_bits;100};101 102extern const struct attribute_group *qeth_l3_attr_groups[];103 104int qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const u8 *addr,105 char *buf);106int qeth_l3_setrouting_v4(struct qeth_card *);107int qeth_l3_setrouting_v6(struct qeth_card *);108int qeth_l3_add_ipato_entry(struct qeth_card *, struct qeth_ipato_entry *);109int qeth_l3_del_ipato_entry(struct qeth_card *card,110 enum qeth_prot_versions proto, u8 *addr,111 unsigned int mask_bits);112void qeth_l3_update_ipato(struct qeth_card *card);113int qeth_l3_modify_hsuid(struct qeth_card *card, bool add);114int qeth_l3_modify_rxip_vipa(struct qeth_card *card, bool add, const u8 *ip,115 enum qeth_ip_types type,116 enum qeth_prot_versions proto);117 118#endif /* __QETH_L3_H__ */119