121 lines
3.4 KiB
C
121 lines
3.4 KiB
C
/*
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* Copyright IBM Corp. 2007
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* Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
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* Frank Pavlic <fpavlic@de.ibm.com>,
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* Thomas Spatzier <tspat@de.ibm.com>,
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* Frank Blaschka <frank.blaschka@de.ibm.com>
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*/
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#ifndef __QETH_L3_H__
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#define __QETH_L3_H__
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#include "qeth_core.h"
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#include <linux/hashtable.h>
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#define QETH_SNIFF_AVAIL 0x0008
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struct qeth_ipaddr {
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struct hlist_node hnode;
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enum qeth_ip_types type;
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enum qeth_ipa_setdelip_flags set_flags;
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enum qeth_ipa_setdelip_flags del_flags;
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u8 is_multicast:1;
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u8 in_progress:1;
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u8 disp_flag:2;
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/* is changed only for normal ip addresses
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* for non-normal addresses it always is 1
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*/
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int ref_counter;
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enum qeth_prot_versions proto;
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unsigned char mac[OSA_ADDR_LEN];
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union {
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struct {
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unsigned int addr;
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unsigned int mask;
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} a4;
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struct {
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struct in6_addr addr;
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unsigned int pfxlen;
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} a6;
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} u;
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};
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static inline bool qeth_l3_addr_match_ip(struct qeth_ipaddr *a1,
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struct qeth_ipaddr *a2)
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{
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if (a1->proto != a2->proto)
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return false;
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if (a1->proto == QETH_PROT_IPV6)
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return ipv6_addr_equal(&a1->u.a6.addr, &a2->u.a6.addr);
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return a1->u.a4.addr == a2->u.a4.addr;
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}
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static inline bool qeth_l3_addr_match_all(struct qeth_ipaddr *a1,
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struct qeth_ipaddr *a2)
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{
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/* Assumes that the pair was obtained via qeth_l3_addr_find_by_ip(),
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* so 'proto' and 'addr' match for sure.
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*
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* For ucast:
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* - 'mac' is always 0.
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* - 'mask'/'pfxlen' for RXIP/VIPA is always 0. For NORMAL, matching
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* values are required to avoid mixups in takeover eligibility.
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*
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* For mcast,
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* - 'mac' is mapped from the IP, and thus always matches.
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* - 'mask'/'pfxlen' is always 0.
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*/
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if (a1->type != a2->type)
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return false;
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if (a1->proto == QETH_PROT_IPV6)
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return a1->u.a6.pfxlen == a2->u.a6.pfxlen;
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return a1->u.a4.mask == a2->u.a4.mask;
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}
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static inline u64 qeth_l3_ipaddr_hash(struct qeth_ipaddr *addr)
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{
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u64 ret = 0;
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u8 *point;
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if (addr->proto == QETH_PROT_IPV6) {
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point = (u8 *) &addr->u.a6.addr;
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ret = get_unaligned((u64 *)point) ^
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get_unaligned((u64 *) (point + 8));
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}
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if (addr->proto == QETH_PROT_IPV4) {
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point = (u8 *) &addr->u.a4.addr;
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ret = get_unaligned((u32 *) point);
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}
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return ret;
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}
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struct qeth_ipato_entry {
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struct list_head entry;
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enum qeth_prot_versions proto;
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char addr[16];
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int mask_bits;
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};
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void qeth_l3_ipaddr_to_string(enum qeth_prot_versions, const __u8 *, char *);
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int qeth_l3_string_to_ipaddr(const char *, enum qeth_prot_versions, __u8 *);
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int qeth_l3_create_device_attributes(struct device *);
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void qeth_l3_remove_device_attributes(struct device *);
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int qeth_l3_setrouting_v4(struct qeth_card *);
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int qeth_l3_setrouting_v6(struct qeth_card *);
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int qeth_l3_add_ipato_entry(struct qeth_card *, struct qeth_ipato_entry *);
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void qeth_l3_del_ipato_entry(struct qeth_card *, enum qeth_prot_versions,
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u8 *, int);
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int qeth_l3_add_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
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void qeth_l3_del_vipa(struct qeth_card *, enum qeth_prot_versions, const u8 *);
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int qeth_l3_add_rxip(struct qeth_card *, enum qeth_prot_versions, const u8 *);
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void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions,
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const u8 *);
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void qeth_l3_update_ipato(struct qeth_card *card);
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struct qeth_ipaddr *qeth_l3_get_addr_buffer(enum qeth_prot_versions);
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int qeth_l3_add_ip(struct qeth_card *, struct qeth_ipaddr *);
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int qeth_l3_delete_ip(struct qeth_card *, struct qeth_ipaddr *);
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#endif /* __QETH_L3_H__ */
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