/* * drivers/s390/net/qeth_l3_main.c * * Copyright IBM Corp. 2007, 2009 * Author(s): Utz Bacher , * Frank Pavlic , * Thomas Spatzier , * Frank Blaschka */ #define KMSG_COMPONENT "qeth" #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "qeth_l3.h" static int qeth_l3_set_offline(struct ccwgroup_device *); static int qeth_l3_recover(void *); static int qeth_l3_stop(struct net_device *); static void qeth_l3_set_multicast_list(struct net_device *); static int qeth_l3_neigh_setup(struct net_device *, struct neigh_parms *); static int qeth_l3_register_addr_entry(struct qeth_card *, struct qeth_ipaddr *); static int qeth_l3_deregister_addr_entry(struct qeth_card *, struct qeth_ipaddr *); static int __qeth_l3_set_online(struct ccwgroup_device *, int); static int __qeth_l3_set_offline(struct ccwgroup_device *, int); static int qeth_l3_isxdigit(char *buf) { while (*buf) { if (!isxdigit(*buf++)) return 0; } return 1; } void qeth_l3_ipaddr4_to_string(const __u8 *addr, char *buf) { sprintf(buf, "%i.%i.%i.%i", addr[0], addr[1], addr[2], addr[3]); } int qeth_l3_string_to_ipaddr4(const char *buf, __u8 *addr) { int count = 0, rc = 0; int in[4]; char c; rc = sscanf(buf, "%u.%u.%u.%u%c", &in[0], &in[1], &in[2], &in[3], &c); if (rc != 4 && (rc != 5 || c != '\n')) return -EINVAL; for (count = 0; count < 4; count++) { if (in[count] > 255) return -EINVAL; addr[count] = in[count]; } return 0; } void qeth_l3_ipaddr6_to_string(const __u8 *addr, char *buf) { sprintf(buf, "%02x%02x:%02x%02x:%02x%02x:%02x%02x" ":%02x%02x:%02x%02x:%02x%02x:%02x%02x", addr[0], addr[1], addr[2], addr[3], addr[4], addr[5], addr[6], addr[7], addr[8], addr[9], addr[10], addr[11], addr[12], addr[13], addr[14], addr[15]); } int qeth_l3_string_to_ipaddr6(const char *buf, __u8 *addr) { const char *end, *end_tmp, *start; __u16 *in; char num[5]; int num2, cnt, out, found, save_cnt; unsigned short in_tmp[8] = {0, }; cnt = out = found = save_cnt = num2 = 0; end = start = buf; in = (__u16 *) addr; memset(in, 0, 16); while (*end) { end = strchr(start, ':'); if (end == NULL) { end = buf + strlen(buf); end_tmp = strchr(start, '\n'); if (end_tmp != NULL) end = end_tmp; out = 1; } if ((end - start)) { memset(num, 0, 5); if ((end - start) > 4) return -EINVAL; memcpy(num, start, end - start); if (!qeth_l3_isxdigit(num)) return -EINVAL; sscanf(start, "%x", &num2); if (found) in_tmp[save_cnt++] = num2; else in[cnt++] = num2; if (out) break; } else { if (found) return -EINVAL; found = 1; } start = ++end; } if (cnt + save_cnt > 8) return -EINVAL; cnt = 7; while (save_cnt) in[cnt--] = in_tmp[--save_cnt]; return 0; } void qeth_l3_ipaddr_to_string(enum qeth_prot_versions proto, const __u8 *addr, char *buf) { if (proto == QETH_PROT_IPV4) qeth_l3_ipaddr4_to_string(addr, buf); else if (proto == QETH_PROT_IPV6) qeth_l3_ipaddr6_to_string(addr, buf); } int qeth_l3_string_to_ipaddr(const char *buf, enum qeth_prot_versions proto, __u8 *addr) { if (proto == QETH_PROT_IPV4) return qeth_l3_string_to_ipaddr4(buf, addr); else if (proto == QETH_PROT_IPV6) return qeth_l3_string_to_ipaddr6(buf, addr); else return -EINVAL; } static void qeth_l3_convert_addr_to_bits(u8 *addr, u8 *bits, int len) { int i, j; u8 octet; for (i = 0; i < len; ++i) { octet = addr[i]; for (j = 7; j >= 0; --j) { bits[i*8 + j] = octet & 1; octet >>= 1; } } } static int qeth_l3_is_addr_covered_by_ipato(struct qeth_card *card, struct qeth_ipaddr *addr) { struct qeth_ipato_entry *ipatoe; u8 addr_bits[128] = {0, }; u8 ipatoe_bits[128] = {0, }; int rc = 0; if (!card->ipato.enabled) return 0; qeth_l3_convert_addr_to_bits((u8 *) &addr->u, addr_bits, (addr->proto == QETH_PROT_IPV4)? 4:16); list_for_each_entry(ipatoe, &card->ipato.entries, entry) { if (addr->proto != ipatoe->proto) continue; qeth_l3_convert_addr_to_bits(ipatoe->addr, ipatoe_bits, (ipatoe->proto == QETH_PROT_IPV4) ? 4 : 16); if (addr->proto == QETH_PROT_IPV4) rc = !memcmp(addr_bits, ipatoe_bits, min(32, ipatoe->mask_bits)); else rc = !memcmp(addr_bits, ipatoe_bits, min(128, ipatoe->mask_bits)); if (rc) break; } /* invert? */ if ((addr->proto == QETH_PROT_IPV4) && card->ipato.invert4) rc = !rc; else if ((addr->proto == QETH_PROT_IPV6) && card->ipato.invert6) rc = !rc; return rc; } /* * Add IP to be added to todo list. If there is already an "add todo" * in this list we just incremenent the reference count. * Returns 0 if we just incremented reference count. */ static int __qeth_l3_insert_ip_todo(struct qeth_card *card, struct qeth_ipaddr *addr, int add) { struct qeth_ipaddr *tmp, *t; int found = 0; list_for_each_entry_safe(tmp, t, card->ip_tbd_list, entry) { if ((addr->type == QETH_IP_TYPE_DEL_ALL_MC) && (tmp->type == QETH_IP_TYPE_DEL_ALL_MC)) return 0; if ((tmp->proto == QETH_PROT_IPV4) && (addr->proto == QETH_PROT_IPV4) && (tmp->type == addr->type) && (tmp->is_multicast == addr->is_multicast) && (tmp->u.a4.addr == addr->u.a4.addr) && (tmp->u.a4.mask == addr->u.a4.mask)) { found = 1; break; } if ((tmp->proto == QETH_PROT_IPV6) && (addr->proto == QETH_PROT_IPV6) && (tmp->type == addr->type) && (tmp->is_multicast == addr->is_multicast) && (tmp->u.a6.pfxlen == addr->u.a6.pfxlen) && (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr, sizeof(struct in6_addr)) == 0)) { found = 1; break; } } if (found) { if (addr->users != 0) tmp->users += addr->users; else tmp->users += add ? 1 : -1; if (tmp->users == 0) { list_del(&tmp->entry); kfree(tmp); } return 0; } else { if (addr->type == QETH_IP_TYPE_DEL_ALL_MC) list_add(&addr->entry, card->ip_tbd_list); else { if (addr->users == 0) addr->users += add ? 1 : -1; if (add && (addr->type == QETH_IP_TYPE_NORMAL) && qeth_l3_is_addr_covered_by_ipato(card, addr)) { QETH_DBF_TEXT(TRACE, 2, "tkovaddr"); addr->set_flags |= QETH_IPA_SETIP_TAKEOVER_FLAG; } list_add_tail(&addr->entry, card->ip_tbd_list); } return 1; } } static int qeth_l3_delete_ip(struct qeth_card *card, struct qeth_ipaddr *addr) { unsigned long flags; int rc = 0; QETH_DBF_TEXT(TRACE, 4, "delip"); if (addr->proto == QETH_PROT_IPV4) QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4); else { QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8); QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8); } spin_lock_irqsave(&card->ip_lock, flags); rc = __qeth_l3_insert_ip_todo(card, addr, 0); spin_unlock_irqrestore(&card->ip_lock, flags); return rc; } static int qeth_l3_add_ip(struct qeth_card *card, struct qeth_ipaddr *addr) { unsigned long flags; int rc = 0; QETH_DBF_TEXT(TRACE, 4, "addip"); if (addr->proto == QETH_PROT_IPV4) QETH_DBF_HEX(TRACE, 4, &addr->u.a4.addr, 4); else { QETH_DBF_HEX(TRACE, 4, &addr->u.a6.addr, 8); QETH_DBF_HEX(TRACE, 4, ((char *)&addr->u.a6.addr) + 8, 8); } spin_lock_irqsave(&card->ip_lock, flags); rc = __qeth_l3_insert_ip_todo(card, addr, 1); spin_unlock_irqrestore(&card->ip_lock, flags); return rc; } static struct qeth_ipaddr *qeth_l3_get_addr_buffer( enum qeth_prot_versions prot) { struct qeth_ipaddr *addr; addr = kzalloc(sizeof(struct qeth_ipaddr), GFP_ATOMIC); if (addr == NULL) { return NULL; } addr->type = QETH_IP_TYPE_NORMAL; addr->proto = prot; return addr; } static void qeth_l3_delete_mc_addresses(struct qeth_card *card) { struct qeth_ipaddr *iptodo; unsigned long flags; QETH_DBF_TEXT(TRACE, 4, "delmc"); iptodo = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); if (!iptodo) { QETH_DBF_TEXT(TRACE, 2, "dmcnomem"); return; } iptodo->type = QETH_IP_TYPE_DEL_ALL_MC; spin_lock_irqsave(&card->ip_lock, flags); if (!__qeth_l3_insert_ip_todo(card, iptodo, 0)) kfree(iptodo); spin_unlock_irqrestore(&card->ip_lock, flags); } /* * Add/remove address to/from card's ip list, i.e. try to add or remove * reference to/from an IP address that is already registered on the card. * Returns: * 0 address was on card and its reference count has been adjusted, * but is still > 0, so nothing has to be done * also returns 0 if card was not on card and the todo was to delete * the address -> there is also nothing to be done * 1 address was not on card and the todo is to add it to the card's ip * list * -1 address was on card and its reference count has been decremented * to <= 0 by the todo -> address must be removed from card */ static int __qeth_l3_ref_ip_on_card(struct qeth_card *card, struct qeth_ipaddr *todo, struct qeth_ipaddr **__addr) { struct qeth_ipaddr *addr; int found = 0; list_for_each_entry(addr, &card->ip_list, entry) { if ((addr->proto == QETH_PROT_IPV4) && (todo->proto == QETH_PROT_IPV4) && (addr->type == todo->type) && (addr->u.a4.addr == todo->u.a4.addr) && (addr->u.a4.mask == todo->u.a4.mask)) { found = 1; break; } if ((addr->proto == QETH_PROT_IPV6) && (todo->proto == QETH_PROT_IPV6) && (addr->type == todo->type) && (addr->u.a6.pfxlen == todo->u.a6.pfxlen) && (memcmp(&addr->u.a6.addr, &todo->u.a6.addr, sizeof(struct in6_addr)) == 0)) { found = 1; break; } } if (found) { addr->users += todo->users; if (addr->users <= 0) { *__addr = addr; return -1; } else { /* for VIPA and RXIP limit refcount to 1 */ if (addr->type != QETH_IP_TYPE_NORMAL) addr->users = 1; return 0; } } if (todo->users > 0) { /* for VIPA and RXIP limit refcount to 1 */ if (todo->type != QETH_IP_TYPE_NORMAL) todo->users = 1; return 1; } else return 0; } static void __qeth_l3_delete_all_mc(struct qeth_card *card, unsigned long *flags) { struct list_head fail_list; struct qeth_ipaddr *addr, *tmp; int rc; INIT_LIST_HEAD(&fail_list); again: list_for_each_entry_safe(addr, tmp, &card->ip_list, entry) { if (addr->is_multicast) { list_del(&addr->entry); spin_unlock_irqrestore(&card->ip_lock, *flags); rc = qeth_l3_deregister_addr_entry(card, addr); spin_lock_irqsave(&card->ip_lock, *flags); if (!rc || (rc == IPA_RC_MC_ADDR_NOT_FOUND)) kfree(addr); else list_add_tail(&addr->entry, &fail_list); goto again; } } list_splice(&fail_list, &card->ip_list); } static void qeth_l3_set_ip_addr_list(struct qeth_card *card) { struct list_head *tbd_list; struct qeth_ipaddr *todo, *addr; unsigned long flags; int rc; QETH_DBF_TEXT(TRACE, 2, "sdiplist"); QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *)); spin_lock_irqsave(&card->ip_lock, flags); tbd_list = card->ip_tbd_list; card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_ATOMIC); if (!card->ip_tbd_list) { QETH_DBF_TEXT(TRACE, 0, "silnomem"); card->ip_tbd_list = tbd_list; spin_unlock_irqrestore(&card->ip_lock, flags); return; } else INIT_LIST_HEAD(card->ip_tbd_list); while (!list_empty(tbd_list)) { todo = list_entry(tbd_list->next, struct qeth_ipaddr, entry); list_del(&todo->entry); if (todo->type == QETH_IP_TYPE_DEL_ALL_MC) { __qeth_l3_delete_all_mc(card, &flags); kfree(todo); continue; } rc = __qeth_l3_ref_ip_on_card(card, todo, &addr); if (rc == 0) { /* nothing to be done; only adjusted refcount */ kfree(todo); } else if (rc == 1) { /* new entry to be added to on-card list */ spin_unlock_irqrestore(&card->ip_lock, flags); rc = qeth_l3_register_addr_entry(card, todo); spin_lock_irqsave(&card->ip_lock, flags); if (!rc || (rc == IPA_RC_LAN_OFFLINE)) list_add_tail(&todo->entry, &card->ip_list); else kfree(todo); } else if (rc == -1) { /* on-card entry to be removed */ list_del_init(&addr->entry); spin_unlock_irqrestore(&card->ip_lock, flags); rc = qeth_l3_deregister_addr_entry(card, addr); spin_lock_irqsave(&card->ip_lock, flags); if (!rc || (rc == IPA_RC_PRIMARY_ALREADY_DEFINED)) kfree(addr); else list_add_tail(&addr->entry, &card->ip_list); kfree(todo); } } spin_unlock_irqrestore(&card->ip_lock, flags); kfree(tbd_list); } static void qeth_l3_clear_ip_list(struct qeth_card *card, int clean, int recover) { struct qeth_ipaddr *addr, *tmp; unsigned long flags; QETH_DBF_TEXT(TRACE, 4, "clearip"); spin_lock_irqsave(&card->ip_lock, flags); /* clear todo list */ list_for_each_entry_safe(addr, tmp, card->ip_tbd_list, entry) { list_del(&addr->entry); kfree(addr); } while (!list_empty(&card->ip_list)) { addr = list_entry(card->ip_list.next, struct qeth_ipaddr, entry); list_del_init(&addr->entry); if (clean) { spin_unlock_irqrestore(&card->ip_lock, flags); qeth_l3_deregister_addr_entry(card, addr); spin_lock_irqsave(&card->ip_lock, flags); } if (!recover || addr->is_multicast) { kfree(addr); continue; } list_add_tail(&addr->entry, card->ip_tbd_list); } spin_unlock_irqrestore(&card->ip_lock, flags); } static int qeth_l3_address_exists_in_list(struct list_head *list, struct qeth_ipaddr *addr, int same_type) { struct qeth_ipaddr *tmp; list_for_each_entry(tmp, list, entry) { if ((tmp->proto == QETH_PROT_IPV4) && (addr->proto == QETH_PROT_IPV4) && ((same_type && (tmp->type == addr->type)) || (!same_type && (tmp->type != addr->type))) && (tmp->u.a4.addr == addr->u.a4.addr)) return 1; if ((tmp->proto == QETH_PROT_IPV6) && (addr->proto == QETH_PROT_IPV6) && ((same_type && (tmp->type == addr->type)) || (!same_type && (tmp->type != addr->type))) && (memcmp(&tmp->u.a6.addr, &addr->u.a6.addr, sizeof(struct in6_addr)) == 0)) return 1; } return 0; } static int qeth_l3_send_setdelmc(struct qeth_card *card, struct qeth_ipaddr *addr, int ipacmd) { int rc; struct qeth_cmd_buffer *iob; struct qeth_ipa_cmd *cmd; QETH_DBF_TEXT(TRACE, 4, "setdelmc"); iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto); cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); memcpy(&cmd->data.setdelipm.mac, addr->mac, OSA_ADDR_LEN); if (addr->proto == QETH_PROT_IPV6) memcpy(cmd->data.setdelipm.ip6, &addr->u.a6.addr, sizeof(struct in6_addr)); else memcpy(&cmd->data.setdelipm.ip4, &addr->u.a4.addr, 4); rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); return rc; } static void qeth_l3_fill_netmask(u8 *netmask, unsigned int len) { int i, j; for (i = 0; i < 16; i++) { j = (len) - (i * 8); if (j >= 8) netmask[i] = 0xff; else if (j > 0) netmask[i] = (u8)(0xFF00 >> j); else netmask[i] = 0; } } static int qeth_l3_send_setdelip(struct qeth_card *card, struct qeth_ipaddr *addr, int ipacmd, unsigned int flags) { int rc; struct qeth_cmd_buffer *iob; struct qeth_ipa_cmd *cmd; __u8 netmask[16]; QETH_DBF_TEXT(TRACE, 4, "setdelip"); QETH_DBF_TEXT_(TRACE, 4, "flags%02X", flags); iob = qeth_get_ipacmd_buffer(card, ipacmd, addr->proto); cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); if (addr->proto == QETH_PROT_IPV6) { memcpy(cmd->data.setdelip6.ip_addr, &addr->u.a6.addr, sizeof(struct in6_addr)); qeth_l3_fill_netmask(netmask, addr->u.a6.pfxlen); memcpy(cmd->data.setdelip6.mask, netmask, sizeof(struct in6_addr)); cmd->data.setdelip6.flags = flags; } else { memcpy(cmd->data.setdelip4.ip_addr, &addr->u.a4.addr, 4); memcpy(cmd->data.setdelip4.mask, &addr->u.a4.mask, 4); cmd->data.setdelip4.flags = flags; } rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); return rc; } static int qeth_l3_send_setrouting(struct qeth_card *card, enum qeth_routing_types type, enum qeth_prot_versions prot) { int rc; struct qeth_ipa_cmd *cmd; struct qeth_cmd_buffer *iob; QETH_DBF_TEXT(TRACE, 4, "setroutg"); iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETRTG, prot); cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); cmd->data.setrtg.type = (type); rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); return rc; } static void qeth_l3_correct_routing_type(struct qeth_card *card, enum qeth_routing_types *type, enum qeth_prot_versions prot) { if (card->info.type == QETH_CARD_TYPE_IQD) { switch (*type) { case NO_ROUTER: case PRIMARY_CONNECTOR: case SECONDARY_CONNECTOR: case MULTICAST_ROUTER: return; default: goto out_inval; } } else { switch (*type) { case NO_ROUTER: case PRIMARY_ROUTER: case SECONDARY_ROUTER: return; case MULTICAST_ROUTER: if (qeth_is_ipafunc_supported(card, prot, IPA_OSA_MC_ROUTER)) return; default: goto out_inval; } } out_inval: *type = NO_ROUTER; } int qeth_l3_setrouting_v4(struct qeth_card *card) { int rc; QETH_DBF_TEXT(TRACE, 3, "setrtg4"); qeth_l3_correct_routing_type(card, &card->options.route4.type, QETH_PROT_IPV4); rc = qeth_l3_send_setrouting(card, card->options.route4.type, QETH_PROT_IPV4); if (rc) { card->options.route4.type = NO_ROUTER; QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type" " on %s. Type set to 'no router'.\n", rc, QETH_CARD_IFNAME(card)); } return rc; } int qeth_l3_setrouting_v6(struct qeth_card *card) { int rc = 0; QETH_DBF_TEXT(TRACE, 3, "setrtg6"); #ifdef CONFIG_QETH_IPV6 if (!qeth_is_supported(card, IPA_IPV6)) return 0; qeth_l3_correct_routing_type(card, &card->options.route6.type, QETH_PROT_IPV6); rc = qeth_l3_send_setrouting(card, card->options.route6.type, QETH_PROT_IPV6); if (rc) { card->options.route6.type = NO_ROUTER; QETH_DBF_MESSAGE(2, "Error (0x%04x) while setting routing type" " on %s. Type set to 'no router'.\n", rc, QETH_CARD_IFNAME(card)); } #endif return rc; } /* * IP address takeover related functions */ static void qeth_l3_clear_ipato_list(struct qeth_card *card) { struct qeth_ipato_entry *ipatoe, *tmp; unsigned long flags; spin_lock_irqsave(&card->ip_lock, flags); list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { list_del(&ipatoe->entry); kfree(ipatoe); } spin_unlock_irqrestore(&card->ip_lock, flags); } int qeth_l3_add_ipato_entry(struct qeth_card *card, struct qeth_ipato_entry *new) { struct qeth_ipato_entry *ipatoe; unsigned long flags; int rc = 0; QETH_DBF_TEXT(TRACE, 2, "addipato"); spin_lock_irqsave(&card->ip_lock, flags); list_for_each_entry(ipatoe, &card->ipato.entries, entry) { if (ipatoe->proto != new->proto) continue; if (!memcmp(ipatoe->addr, new->addr, (ipatoe->proto == QETH_PROT_IPV4)? 4:16) && (ipatoe->mask_bits == new->mask_bits)) { rc = -EEXIST; break; } } if (!rc) list_add_tail(&new->entry, &card->ipato.entries); spin_unlock_irqrestore(&card->ip_lock, flags); return rc; } void qeth_l3_del_ipato_entry(struct qeth_card *card, enum qeth_prot_versions proto, u8 *addr, int mask_bits) { struct qeth_ipato_entry *ipatoe, *tmp; unsigned long flags; QETH_DBF_TEXT(TRACE, 2, "delipato"); spin_lock_irqsave(&card->ip_lock, flags); list_for_each_entry_safe(ipatoe, tmp, &card->ipato.entries, entry) { if (ipatoe->proto != proto) continue; if (!memcmp(ipatoe->addr, addr, (proto == QETH_PROT_IPV4)? 4:16) && (ipatoe->mask_bits == mask_bits)) { list_del(&ipatoe->entry); kfree(ipatoe); } } spin_unlock_irqrestore(&card->ip_lock, flags); } /* * VIPA related functions */ int qeth_l3_add_vipa(struct qeth_card *card, enum qeth_prot_versions proto, const u8 *addr) { struct qeth_ipaddr *ipaddr; unsigned long flags; int rc = 0; ipaddr = qeth_l3_get_addr_buffer(proto); if (ipaddr) { if (proto == QETH_PROT_IPV4) { QETH_DBF_TEXT(TRACE, 2, "addvipa4"); memcpy(&ipaddr->u.a4.addr, addr, 4); ipaddr->u.a4.mask = 0; } else if (proto == QETH_PROT_IPV6) { QETH_DBF_TEXT(TRACE, 2, "addvipa6"); memcpy(&ipaddr->u.a6.addr, addr, 16); ipaddr->u.a6.pfxlen = 0; } ipaddr->type = QETH_IP_TYPE_VIPA; ipaddr->set_flags = QETH_IPA_SETIP_VIPA_FLAG; ipaddr->del_flags = QETH_IPA_DELIP_VIPA_FLAG; } else return -ENOMEM; spin_lock_irqsave(&card->ip_lock, flags); if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) || qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0)) rc = -EEXIST; spin_unlock_irqrestore(&card->ip_lock, flags); if (rc) { return rc; } if (!qeth_l3_add_ip(card, ipaddr)) kfree(ipaddr); qeth_l3_set_ip_addr_list(card); return rc; } void qeth_l3_del_vipa(struct qeth_card *card, enum qeth_prot_versions proto, const u8 *addr) { struct qeth_ipaddr *ipaddr; ipaddr = qeth_l3_get_addr_buffer(proto); if (ipaddr) { if (proto == QETH_PROT_IPV4) { QETH_DBF_TEXT(TRACE, 2, "delvipa4"); memcpy(&ipaddr->u.a4.addr, addr, 4); ipaddr->u.a4.mask = 0; } else if (proto == QETH_PROT_IPV6) { QETH_DBF_TEXT(TRACE, 2, "delvipa6"); memcpy(&ipaddr->u.a6.addr, addr, 16); ipaddr->u.a6.pfxlen = 0; } ipaddr->type = QETH_IP_TYPE_VIPA; } else return; if (!qeth_l3_delete_ip(card, ipaddr)) kfree(ipaddr); qeth_l3_set_ip_addr_list(card); } /* * proxy ARP related functions */ int qeth_l3_add_rxip(struct qeth_card *card, enum qeth_prot_versions proto, const u8 *addr) { struct qeth_ipaddr *ipaddr; unsigned long flags; int rc = 0; ipaddr = qeth_l3_get_addr_buffer(proto); if (ipaddr) { if (proto == QETH_PROT_IPV4) { QETH_DBF_TEXT(TRACE, 2, "addrxip4"); memcpy(&ipaddr->u.a4.addr, addr, 4); ipaddr->u.a4.mask = 0; } else if (proto == QETH_PROT_IPV6) { QETH_DBF_TEXT(TRACE, 2, "addrxip6"); memcpy(&ipaddr->u.a6.addr, addr, 16); ipaddr->u.a6.pfxlen = 0; } ipaddr->type = QETH_IP_TYPE_RXIP; ipaddr->set_flags = QETH_IPA_SETIP_TAKEOVER_FLAG; ipaddr->del_flags = 0; } else return -ENOMEM; spin_lock_irqsave(&card->ip_lock, flags); if (qeth_l3_address_exists_in_list(&card->ip_list, ipaddr, 0) || qeth_l3_address_exists_in_list(card->ip_tbd_list, ipaddr, 0)) rc = -EEXIST; spin_unlock_irqrestore(&card->ip_lock, flags); if (rc) { return rc; } if (!qeth_l3_add_ip(card, ipaddr)) kfree(ipaddr); qeth_l3_set_ip_addr_list(card); return 0; } void qeth_l3_del_rxip(struct qeth_card *card, enum qeth_prot_versions proto, const u8 *addr) { struct qeth_ipaddr *ipaddr; ipaddr = qeth_l3_get_addr_buffer(proto); if (ipaddr) { if (proto == QETH_PROT_IPV4) { QETH_DBF_TEXT(TRACE, 2, "addrxip4"); memcpy(&ipaddr->u.a4.addr, addr, 4); ipaddr->u.a4.mask = 0; } else if (proto == QETH_PROT_IPV6) { QETH_DBF_TEXT(TRACE, 2, "addrxip6"); memcpy(&ipaddr->u.a6.addr, addr, 16); ipaddr->u.a6.pfxlen = 0; } ipaddr->type = QETH_IP_TYPE_RXIP; } else return; if (!qeth_l3_delete_ip(card, ipaddr)) kfree(ipaddr); qeth_l3_set_ip_addr_list(card); } static int qeth_l3_register_addr_entry(struct qeth_card *card, struct qeth_ipaddr *addr) { char buf[50]; int rc = 0; int cnt = 3; if (addr->proto == QETH_PROT_IPV4) { QETH_DBF_TEXT(TRACE, 2, "setaddr4"); QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int)); } else if (addr->proto == QETH_PROT_IPV6) { QETH_DBF_TEXT(TRACE, 2, "setaddr6"); QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8); QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8); } else { QETH_DBF_TEXT(TRACE, 2, "setaddr?"); QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr)); } do { if (addr->is_multicast) rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_SETIPM); else rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_SETIP, addr->set_flags); if (rc) QETH_DBF_TEXT(TRACE, 2, "failed"); } while ((--cnt > 0) && rc); if (rc) { QETH_DBF_TEXT(TRACE, 2, "FAILED"); qeth_l3_ipaddr_to_string(addr->proto, (u8 *)&addr->u, buf); dev_warn(&card->gdev->dev, "Registering IP address %s failed\n", buf); } return rc; } static int qeth_l3_deregister_addr_entry(struct qeth_card *card, struct qeth_ipaddr *addr) { int rc = 0; if (addr->proto == QETH_PROT_IPV4) { QETH_DBF_TEXT(TRACE, 2, "deladdr4"); QETH_DBF_HEX(TRACE, 3, &addr->u.a4.addr, sizeof(int)); } else if (addr->proto == QETH_PROT_IPV6) { QETH_DBF_TEXT(TRACE, 2, "deladdr6"); QETH_DBF_HEX(TRACE, 3, &addr->u.a6.addr, 8); QETH_DBF_HEX(TRACE, 3, ((char *)&addr->u.a6.addr) + 8, 8); } else { QETH_DBF_TEXT(TRACE, 2, "deladdr?"); QETH_DBF_HEX(TRACE, 3, addr, sizeof(struct qeth_ipaddr)); } if (addr->is_multicast) rc = qeth_l3_send_setdelmc(card, addr, IPA_CMD_DELIPM); else rc = qeth_l3_send_setdelip(card, addr, IPA_CMD_DELIP, addr->del_flags); if (rc) QETH_DBF_TEXT(TRACE, 2, "failed"); return rc; } static inline u8 qeth_l3_get_qeth_hdr_flags4(int cast_type) { if (cast_type == RTN_MULTICAST) return QETH_CAST_MULTICAST; if (cast_type == RTN_BROADCAST) return QETH_CAST_BROADCAST; return QETH_CAST_UNICAST; } static inline u8 qeth_l3_get_qeth_hdr_flags6(int cast_type) { u8 ct = QETH_HDR_PASSTHRU | QETH_HDR_IPV6; if (cast_type == RTN_MULTICAST) return ct | QETH_CAST_MULTICAST; if (cast_type == RTN_ANYCAST) return ct | QETH_CAST_ANYCAST; if (cast_type == RTN_BROADCAST) return ct | QETH_CAST_BROADCAST; return ct | QETH_CAST_UNICAST; } static int qeth_l3_send_setadp_mode(struct qeth_card *card, __u32 command, __u32 mode) { int rc; struct qeth_cmd_buffer *iob; struct qeth_ipa_cmd *cmd; QETH_DBF_TEXT(TRACE, 4, "adpmode"); iob = qeth_get_adapter_cmd(card, command, sizeof(struct qeth_ipacmd_setadpparms)); cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); cmd->data.setadapterparms.data.mode = mode; rc = qeth_send_ipa_cmd(card, iob, qeth_default_setadapterparms_cb, NULL); return rc; } static int qeth_l3_setadapter_hstr(struct qeth_card *card) { int rc; QETH_DBF_TEXT(TRACE, 4, "adphstr"); if (qeth_adp_supported(card, IPA_SETADP_SET_BROADCAST_MODE)) { rc = qeth_l3_send_setadp_mode(card, IPA_SETADP_SET_BROADCAST_MODE, card->options.broadcast_mode); if (rc) QETH_DBF_MESSAGE(2, "couldn't set broadcast mode on " "device %s: x%x\n", CARD_BUS_ID(card), rc); rc = qeth_l3_send_setadp_mode(card, IPA_SETADP_ALTER_MAC_ADDRESS, card->options.macaddr_mode); if (rc) QETH_DBF_MESSAGE(2, "couldn't set macaddr mode on " "device %s: x%x\n", CARD_BUS_ID(card), rc); return rc; } if (card->options.broadcast_mode == QETH_TR_BROADCAST_LOCAL) QETH_DBF_MESSAGE(2, "set adapter parameters not available " "to set broadcast mode, using ALLRINGS " "on device %s:\n", CARD_BUS_ID(card)); if (card->options.macaddr_mode == QETH_TR_MACADDR_CANONICAL) QETH_DBF_MESSAGE(2, "set adapter parameters not available " "to set macaddr mode, using NONCANONICAL " "on device %s:\n", CARD_BUS_ID(card)); return 0; } static int qeth_l3_setadapter_parms(struct qeth_card *card) { int rc; QETH_DBF_TEXT(SETUP, 2, "setadprm"); if (!qeth_is_supported(card, IPA_SETADAPTERPARMS)) { dev_info(&card->gdev->dev, "set adapter parameters not supported.\n"); QETH_DBF_TEXT(SETUP, 2, " notsupp"); return 0; } rc = qeth_query_setadapterparms(card); if (rc) { QETH_DBF_MESSAGE(2, "%s couldn't set adapter parameters: " "0x%x\n", dev_name(&card->gdev->dev), rc); return rc; } if (qeth_adp_supported(card, IPA_SETADP_ALTER_MAC_ADDRESS)) { rc = qeth_setadpparms_change_macaddr(card); if (rc) dev_warn(&card->gdev->dev, "Reading the adapter MAC" " address failed\n"); } if ((card->info.link_type == QETH_LINK_TYPE_HSTR) || (card->info.link_type == QETH_LINK_TYPE_LANE_TR)) rc = qeth_l3_setadapter_hstr(card); return rc; } static int qeth_l3_default_setassparms_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd; QETH_DBF_TEXT(TRACE, 4, "defadpcb"); cmd = (struct qeth_ipa_cmd *) data; if (cmd->hdr.return_code == 0) { cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; if (cmd->hdr.prot_version == QETH_PROT_IPV4) card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; if (cmd->hdr.prot_version == QETH_PROT_IPV6) card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; } if (cmd->data.setassparms.hdr.assist_no == IPA_INBOUND_CHECKSUM && cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) { card->info.csum_mask = cmd->data.setassparms.data.flags_32bit; QETH_DBF_TEXT_(TRACE, 3, "csum:%d", card->info.csum_mask); } return 0; } static struct qeth_cmd_buffer *qeth_l3_get_setassparms_cmd( struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code, __u16 len, enum qeth_prot_versions prot) { struct qeth_cmd_buffer *iob; struct qeth_ipa_cmd *cmd; QETH_DBF_TEXT(TRACE, 4, "getasscm"); iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot); cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); cmd->data.setassparms.hdr.assist_no = ipa_func; cmd->data.setassparms.hdr.length = 8 + len; cmd->data.setassparms.hdr.command_code = cmd_code; cmd->data.setassparms.hdr.return_code = 0; cmd->data.setassparms.hdr.seq_no = 0; return iob; } static int qeth_l3_send_setassparms(struct qeth_card *card, struct qeth_cmd_buffer *iob, __u16 len, long data, int (*reply_cb)(struct qeth_card *, struct qeth_reply *, unsigned long), void *reply_param) { int rc; struct qeth_ipa_cmd *cmd; QETH_DBF_TEXT(TRACE, 4, "sendassp"); cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); if (len <= sizeof(__u32)) cmd->data.setassparms.data.flags_32bit = (__u32) data; else /* (len > sizeof(__u32)) */ memcpy(&cmd->data.setassparms.data, (void *) data, len); rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param); return rc; } #ifdef CONFIG_QETH_IPV6 static int qeth_l3_send_simple_setassparms_ipv6(struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code) { int rc; struct qeth_cmd_buffer *iob; QETH_DBF_TEXT(TRACE, 4, "simassp6"); iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code, 0, QETH_PROT_IPV6); rc = qeth_l3_send_setassparms(card, iob, 0, 0, qeth_l3_default_setassparms_cb, NULL); return rc; } #endif static int qeth_l3_send_simple_setassparms(struct qeth_card *card, enum qeth_ipa_funcs ipa_func, __u16 cmd_code, long data) { int rc; int length = 0; struct qeth_cmd_buffer *iob; QETH_DBF_TEXT(TRACE, 4, "simassp4"); if (data) length = sizeof(__u32); iob = qeth_l3_get_setassparms_cmd(card, ipa_func, cmd_code, length, QETH_PROT_IPV4); rc = qeth_l3_send_setassparms(card, iob, length, data, qeth_l3_default_setassparms_cb, NULL); return rc; } static int qeth_l3_start_ipa_arp_processing(struct qeth_card *card) { int rc; QETH_DBF_TEXT(TRACE, 3, "ipaarp"); if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { dev_info(&card->gdev->dev, "ARP processing not supported on %s!\n", QETH_CARD_IFNAME(card)); return 0; } rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING, IPA_CMD_ASS_START, 0); if (rc) { dev_warn(&card->gdev->dev, "Starting ARP processing support for %s failed\n", QETH_CARD_IFNAME(card)); } return rc; } static int qeth_l3_start_ipa_ip_fragmentation(struct qeth_card *card) { int rc; QETH_DBF_TEXT(TRACE, 3, "ipaipfrg"); if (!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) { dev_info(&card->gdev->dev, "Hardware IP fragmentation not supported on %s\n", QETH_CARD_IFNAME(card)); return -EOPNOTSUPP; } rc = qeth_l3_send_simple_setassparms(card, IPA_IP_FRAGMENTATION, IPA_CMD_ASS_START, 0); if (rc) { dev_warn(&card->gdev->dev, "Starting IP fragmentation support for %s failed\n", QETH_CARD_IFNAME(card)); } else dev_info(&card->gdev->dev, "Hardware IP fragmentation enabled \n"); return rc; } static int qeth_l3_start_ipa_source_mac(struct qeth_card *card) { int rc; QETH_DBF_TEXT(TRACE, 3, "stsrcmac"); if (!qeth_is_supported(card, IPA_SOURCE_MAC)) { dev_info(&card->gdev->dev, "Inbound source MAC-address not supported on %s\n", QETH_CARD_IFNAME(card)); return -EOPNOTSUPP; } rc = qeth_l3_send_simple_setassparms(card, IPA_SOURCE_MAC, IPA_CMD_ASS_START, 0); if (rc) dev_warn(&card->gdev->dev, "Starting source MAC-address support for %s failed\n", QETH_CARD_IFNAME(card)); return rc; } static int qeth_l3_start_ipa_vlan(struct qeth_card *card) { int rc = 0; QETH_DBF_TEXT(TRACE, 3, "strtvlan"); if (!qeth_is_supported(card, IPA_FULL_VLAN)) { dev_info(&card->gdev->dev, "VLAN not supported on %s\n", QETH_CARD_IFNAME(card)); return -EOPNOTSUPP; } rc = qeth_l3_send_simple_setassparms(card, IPA_VLAN_PRIO, IPA_CMD_ASS_START, 0); if (rc) { dev_warn(&card->gdev->dev, "Starting VLAN support for %s failed\n", QETH_CARD_IFNAME(card)); } else { dev_info(&card->gdev->dev, "VLAN enabled\n"); } return rc; } static int qeth_l3_start_ipa_multicast(struct qeth_card *card) { int rc; QETH_DBF_TEXT(TRACE, 3, "stmcast"); if (!qeth_is_supported(card, IPA_MULTICASTING)) { dev_info(&card->gdev->dev, "Multicast not supported on %s\n", QETH_CARD_IFNAME(card)); return -EOPNOTSUPP; } rc = qeth_l3_send_simple_setassparms(card, IPA_MULTICASTING, IPA_CMD_ASS_START, 0); if (rc) { dev_warn(&card->gdev->dev, "Starting multicast support for %s failed\n", QETH_CARD_IFNAME(card)); } else { dev_info(&card->gdev->dev, "Multicast enabled\n"); card->dev->flags |= IFF_MULTICAST; } return rc; } static int qeth_l3_query_ipassists_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd; QETH_DBF_TEXT(SETUP, 2, "qipasscb"); cmd = (struct qeth_ipa_cmd *) data; if (cmd->hdr.prot_version == QETH_PROT_IPV4) { card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported; card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled; } else { card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported; card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled; } QETH_DBF_TEXT(SETUP, 2, "suppenbl"); QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported); QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled); return 0; } static int qeth_l3_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot) { int rc; struct qeth_cmd_buffer *iob; QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot); iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot); rc = qeth_send_ipa_cmd(card, iob, qeth_l3_query_ipassists_cb, NULL); return rc; } #ifdef CONFIG_QETH_IPV6 static int qeth_l3_softsetup_ipv6(struct qeth_card *card) { int rc; QETH_DBF_TEXT(TRACE, 3, "softipv6"); if (card->info.type == QETH_CARD_TYPE_IQD) goto out; rc = qeth_l3_query_ipassists(card, QETH_PROT_IPV6); if (rc) { dev_err(&card->gdev->dev, "Activating IPv6 support for %s failed\n", QETH_CARD_IFNAME(card)); return rc; } rc = qeth_l3_send_simple_setassparms(card, IPA_IPV6, IPA_CMD_ASS_START, 3); if (rc) { dev_err(&card->gdev->dev, "Activating IPv6 support for %s failed\n", QETH_CARD_IFNAME(card)); return rc; } rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_IPV6, IPA_CMD_ASS_START); if (rc) { dev_err(&card->gdev->dev, "Activating IPv6 support for %s failed\n", QETH_CARD_IFNAME(card)); return rc; } rc = qeth_l3_send_simple_setassparms_ipv6(card, IPA_PASSTHRU, IPA_CMD_ASS_START); if (rc) { dev_warn(&card->gdev->dev, "Enabling the passthrough mode for %s failed\n", QETH_CARD_IFNAME(card)); return rc; } out: dev_info(&card->gdev->dev, "IPV6 enabled\n"); return 0; } #endif static int qeth_l3_start_ipa_ipv6(struct qeth_card *card) { int rc = 0; QETH_DBF_TEXT(TRACE, 3, "strtipv6"); if (!qeth_is_supported(card, IPA_IPV6)) { dev_info(&card->gdev->dev, "IPv6 not supported on %s\n", QETH_CARD_IFNAME(card)); return 0; } #ifdef CONFIG_QETH_IPV6 rc = qeth_l3_softsetup_ipv6(card); #endif return rc ; } static int qeth_l3_start_ipa_broadcast(struct qeth_card *card) { int rc; QETH_DBF_TEXT(TRACE, 3, "stbrdcst"); card->info.broadcast_capable = 0; if (!qeth_is_supported(card, IPA_FILTERING)) { dev_info(&card->gdev->dev, "Broadcast not supported on %s\n", QETH_CARD_IFNAME(card)); rc = -EOPNOTSUPP; goto out; } rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING, IPA_CMD_ASS_START, 0); if (rc) { dev_warn(&card->gdev->dev, "Enabling broadcast filtering for " "%s failed\n", QETH_CARD_IFNAME(card)); goto out; } rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING, IPA_CMD_ASS_CONFIGURE, 1); if (rc) { dev_warn(&card->gdev->dev, "Setting up broadcast filtering for %s failed\n", QETH_CARD_IFNAME(card)); goto out; } card->info.broadcast_capable = QETH_BROADCAST_WITH_ECHO; dev_info(&card->gdev->dev, "Broadcast enabled\n"); rc = qeth_l3_send_simple_setassparms(card, IPA_FILTERING, IPA_CMD_ASS_ENABLE, 1); if (rc) { dev_warn(&card->gdev->dev, "Setting up broadcast echo " "filtering for %s failed\n", QETH_CARD_IFNAME(card)); goto out; } card->info.broadcast_capable = QETH_BROADCAST_WITHOUT_ECHO; out: if (card->info.broadcast_capable) card->dev->flags |= IFF_BROADCAST; else card->dev->flags &= ~IFF_BROADCAST; return rc; } static int qeth_l3_send_checksum_command(struct qeth_card *card) { int rc; rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_START, 0); if (rc) { dev_warn(&card->gdev->dev, "Starting HW checksumming for %s " "failed, using SW checksumming\n", QETH_CARD_IFNAME(card)); return rc; } rc = qeth_l3_send_simple_setassparms(card, IPA_INBOUND_CHECKSUM, IPA_CMD_ASS_ENABLE, card->info.csum_mask); if (rc) { dev_warn(&card->gdev->dev, "Enabling HW checksumming for %s " "failed, using SW checksumming\n", QETH_CARD_IFNAME(card)); return rc; } return 0; } static int qeth_l3_start_ipa_checksum(struct qeth_card *card) { int rc = 0; QETH_DBF_TEXT(TRACE, 3, "strtcsum"); if (card->options.checksum_type == NO_CHECKSUMMING) { dev_info(&card->gdev->dev, "Using no checksumming on %s.\n", QETH_CARD_IFNAME(card)); return 0; } if (card->options.checksum_type == SW_CHECKSUMMING) { dev_info(&card->gdev->dev, "Using SW checksumming on %s.\n", QETH_CARD_IFNAME(card)); return 0; } if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM)) { dev_info(&card->gdev->dev, "Inbound HW Checksumming not " "supported on %s,\ncontinuing " "using Inbound SW Checksumming\n", QETH_CARD_IFNAME(card)); card->options.checksum_type = SW_CHECKSUMMING; return 0; } rc = qeth_l3_send_checksum_command(card); if (!rc) dev_info(&card->gdev->dev, "HW Checksumming (inbound) enabled\n"); return rc; } static int qeth_l3_start_ipa_tso(struct qeth_card *card) { int rc; QETH_DBF_TEXT(TRACE, 3, "sttso"); if (!qeth_is_supported(card, IPA_OUTBOUND_TSO)) { dev_info(&card->gdev->dev, "Outbound TSO not supported on %s\n", QETH_CARD_IFNAME(card)); rc = -EOPNOTSUPP; } else { rc = qeth_l3_send_simple_setassparms(card, IPA_OUTBOUND_TSO, IPA_CMD_ASS_START, 0); if (rc) dev_warn(&card->gdev->dev, "Starting outbound TCP " "segmentation offload for %s failed\n", QETH_CARD_IFNAME(card)); else dev_info(&card->gdev->dev, "Outbound TSO enabled\n"); } if (rc && (card->options.large_send == QETH_LARGE_SEND_TSO)) { card->options.large_send = QETH_LARGE_SEND_NO; card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG); } return rc; } static int qeth_l3_start_ipassists(struct qeth_card *card) { QETH_DBF_TEXT(TRACE, 3, "strtipas"); qeth_set_access_ctrl_online(card); /* go on*/ qeth_l3_start_ipa_arp_processing(card); /* go on*/ qeth_l3_start_ipa_ip_fragmentation(card); /* go on*/ qeth_l3_start_ipa_source_mac(card); /* go on*/ qeth_l3_start_ipa_vlan(card); /* go on*/ qeth_l3_start_ipa_multicast(card); /* go on*/ qeth_l3_start_ipa_ipv6(card); /* go on*/ qeth_l3_start_ipa_broadcast(card); /* go on*/ qeth_l3_start_ipa_checksum(card); /* go on*/ qeth_l3_start_ipa_tso(card); /* go on*/ return 0; } static int qeth_l3_put_unique_id(struct qeth_card *card) { int rc = 0; struct qeth_cmd_buffer *iob; struct qeth_ipa_cmd *cmd; QETH_DBF_TEXT(TRACE, 2, "puniqeid"); if ((card->info.unique_id & UNIQUE_ID_NOT_BY_CARD) == UNIQUE_ID_NOT_BY_CARD) return -1; iob = qeth_get_ipacmd_buffer(card, IPA_CMD_DESTROY_ADDR, QETH_PROT_IPV6); cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = card->info.unique_id; memcpy(&cmd->data.create_destroy_addr.unique_id[0], card->dev->dev_addr, OSA_ADDR_LEN); rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); return rc; } static int qeth_l3_iqd_read_initial_mac_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd; cmd = (struct qeth_ipa_cmd *) data; if (cmd->hdr.return_code == 0) memcpy(card->dev->dev_addr, cmd->data.create_destroy_addr.unique_id, ETH_ALEN); else random_ether_addr(card->dev->dev_addr); return 0; } static int qeth_l3_iqd_read_initial_mac(struct qeth_card *card) { int rc = 0; struct qeth_cmd_buffer *iob; struct qeth_ipa_cmd *cmd; QETH_DBF_TEXT(SETUP, 2, "hsrmac"); iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6); cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = card->info.unique_id; rc = qeth_send_ipa_cmd(card, iob, qeth_l3_iqd_read_initial_mac_cb, NULL); return rc; } static int qeth_l3_get_unique_id_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd; cmd = (struct qeth_ipa_cmd *) data; if (cmd->hdr.return_code == 0) card->info.unique_id = *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]); else { card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | UNIQUE_ID_NOT_BY_CARD; dev_warn(&card->gdev->dev, "The network adapter failed to " "generate a unique ID\n"); } return 0; } static int qeth_l3_get_unique_id(struct qeth_card *card) { int rc = 0; struct qeth_cmd_buffer *iob; struct qeth_ipa_cmd *cmd; QETH_DBF_TEXT(SETUP, 2, "guniqeid"); if (!qeth_is_supported(card, IPA_IPV6)) { card->info.unique_id = UNIQUE_ID_IF_CREATE_ADDR_FAILED | UNIQUE_ID_NOT_BY_CARD; return 0; } iob = qeth_get_ipacmd_buffer(card, IPA_CMD_CREATE_ADDR, QETH_PROT_IPV6); cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); *((__u16 *) &cmd->data.create_destroy_addr.unique_id[6]) = card->info.unique_id; rc = qeth_send_ipa_cmd(card, iob, qeth_l3_get_unique_id_cb, NULL); return rc; } static void qeth_l3_get_mac_for_ipm(__u32 ipm, char *mac, struct net_device *dev) { if (dev->type == ARPHRD_IEEE802_TR) ip_tr_mc_map(ipm, mac); else ip_eth_mc_map(ipm, mac); } static void qeth_l3_add_mc(struct qeth_card *card, struct in_device *in4_dev) { struct qeth_ipaddr *ipm; struct ip_mc_list *im4; char buf[MAX_ADDR_LEN]; QETH_DBF_TEXT(TRACE, 4, "addmc"); for (im4 = in4_dev->mc_list; im4; im4 = im4->next) { qeth_l3_get_mac_for_ipm(im4->multiaddr, buf, in4_dev->dev); ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); if (!ipm) continue; ipm->u.a4.addr = im4->multiaddr; memcpy(ipm->mac, buf, OSA_ADDR_LEN); ipm->is_multicast = 1; if (!qeth_l3_add_ip(card, ipm)) kfree(ipm); } } static void qeth_l3_add_vlan_mc(struct qeth_card *card) { struct in_device *in_dev; struct vlan_group *vg; int i; QETH_DBF_TEXT(TRACE, 4, "addmcvl"); if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL)) return; vg = card->vlangrp; for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) { struct net_device *netdev = vlan_group_get_device(vg, i); if (netdev == NULL || !(netdev->flags & IFF_UP)) continue; in_dev = in_dev_get(netdev); if (!in_dev) continue; read_lock(&in_dev->mc_list_lock); qeth_l3_add_mc(card, in_dev); read_unlock(&in_dev->mc_list_lock); in_dev_put(in_dev); } } static void qeth_l3_add_multicast_ipv4(struct qeth_card *card) { struct in_device *in4_dev; QETH_DBF_TEXT(TRACE, 4, "chkmcv4"); in4_dev = in_dev_get(card->dev); if (in4_dev == NULL) return; read_lock(&in4_dev->mc_list_lock); qeth_l3_add_mc(card, in4_dev); qeth_l3_add_vlan_mc(card); read_unlock(&in4_dev->mc_list_lock); in_dev_put(in4_dev); } #ifdef CONFIG_QETH_IPV6 static void qeth_l3_add_mc6(struct qeth_card *card, struct inet6_dev *in6_dev) { struct qeth_ipaddr *ipm; struct ifmcaddr6 *im6; char buf[MAX_ADDR_LEN]; QETH_DBF_TEXT(TRACE, 4, "addmc6"); for (im6 = in6_dev->mc_list; im6 != NULL; im6 = im6->next) { ndisc_mc_map(&im6->mca_addr, buf, in6_dev->dev, 0); ipm = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); if (!ipm) continue; ipm->is_multicast = 1; memcpy(ipm->mac, buf, OSA_ADDR_LEN); memcpy(&ipm->u.a6.addr, &im6->mca_addr.s6_addr, sizeof(struct in6_addr)); if (!qeth_l3_add_ip(card, ipm)) kfree(ipm); } } static void qeth_l3_add_vlan_mc6(struct qeth_card *card) { struct inet6_dev *in_dev; struct vlan_group *vg; int i; QETH_DBF_TEXT(TRACE, 4, "admc6vl"); if (!qeth_is_supported(card, IPA_FULL_VLAN) || (card->vlangrp == NULL)) return; vg = card->vlangrp; for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) { struct net_device *netdev = vlan_group_get_device(vg, i); if (netdev == NULL || !(netdev->flags & IFF_UP)) continue; in_dev = in6_dev_get(netdev); if (!in_dev) continue; read_lock_bh(&in_dev->lock); qeth_l3_add_mc6(card, in_dev); read_unlock_bh(&in_dev->lock); in6_dev_put(in_dev); } } static void qeth_l3_add_multicast_ipv6(struct qeth_card *card) { struct inet6_dev *in6_dev; QETH_DBF_TEXT(TRACE, 4, "chkmcv6"); if (!qeth_is_supported(card, IPA_IPV6)) return ; in6_dev = in6_dev_get(card->dev); if (in6_dev == NULL) return; read_lock_bh(&in6_dev->lock); qeth_l3_add_mc6(card, in6_dev); qeth_l3_add_vlan_mc6(card); read_unlock_bh(&in6_dev->lock); in6_dev_put(in6_dev); } #endif /* CONFIG_QETH_IPV6 */ static void qeth_l3_free_vlan_addresses4(struct qeth_card *card, unsigned short vid) { struct in_device *in_dev; struct in_ifaddr *ifa; struct qeth_ipaddr *addr; QETH_DBF_TEXT(TRACE, 4, "frvaddr4"); in_dev = in_dev_get(vlan_group_get_device(card->vlangrp, vid)); if (!in_dev) return; for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) { addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); if (addr) { addr->u.a4.addr = ifa->ifa_address; addr->u.a4.mask = ifa->ifa_mask; addr->type = QETH_IP_TYPE_NORMAL; if (!qeth_l3_delete_ip(card, addr)) kfree(addr); } } in_dev_put(in_dev); } static void qeth_l3_free_vlan_addresses6(struct qeth_card *card, unsigned short vid) { #ifdef CONFIG_QETH_IPV6 struct inet6_dev *in6_dev; struct inet6_ifaddr *ifa; struct qeth_ipaddr *addr; QETH_DBF_TEXT(TRACE, 4, "frvaddr6"); in6_dev = in6_dev_get(vlan_group_get_device(card->vlangrp, vid)); if (!in6_dev) return; for (ifa = in6_dev->addr_list; ifa; ifa = ifa->lst_next) { addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); if (addr) { memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr)); addr->u.a6.pfxlen = ifa->prefix_len; addr->type = QETH_IP_TYPE_NORMAL; if (!qeth_l3_delete_ip(card, addr)) kfree(addr); } } in6_dev_put(in6_dev); #endif /* CONFIG_QETH_IPV6 */ } static void qeth_l3_free_vlan_addresses(struct qeth_card *card, unsigned short vid) { if (!card->vlangrp) return; qeth_l3_free_vlan_addresses4(card, vid); qeth_l3_free_vlan_addresses6(card, vid); } static void qeth_l3_vlan_rx_register(struct net_device *dev, struct vlan_group *grp) { struct qeth_card *card = dev->ml_priv; unsigned long flags; QETH_DBF_TEXT(TRACE, 4, "vlanreg"); spin_lock_irqsave(&card->vlanlock, flags); card->vlangrp = grp; spin_unlock_irqrestore(&card->vlanlock, flags); } static void qeth_l3_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) { return; } static void qeth_l3_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) { struct qeth_card *card = dev->ml_priv; unsigned long flags; QETH_DBF_TEXT_(TRACE, 4, "kid:%d", vid); if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { QETH_DBF_TEXT(TRACE, 3, "kidREC"); return; } spin_lock_irqsave(&card->vlanlock, flags); /* unregister IP addresses of vlan device */ qeth_l3_free_vlan_addresses(card, vid); vlan_group_set_device(card->vlangrp, vid, NULL); spin_unlock_irqrestore(&card->vlanlock, flags); qeth_l3_set_multicast_list(card->dev); } static inline __u16 qeth_l3_rebuild_skb(struct qeth_card *card, struct sk_buff *skb, struct qeth_hdr *hdr) { unsigned short vlan_id = 0; __be16 prot; struct iphdr *ip_hdr; unsigned char tg_addr[MAX_ADDR_LEN]; if (!(hdr->hdr.l3.flags & QETH_HDR_PASSTHRU)) { prot = htons((hdr->hdr.l3.flags & QETH_HDR_IPV6)? ETH_P_IPV6 : ETH_P_IP); switch (hdr->hdr.l3.flags & QETH_HDR_CAST_MASK) { case QETH_CAST_MULTICAST: switch (prot) { #ifdef CONFIG_QETH_IPV6 case __constant_htons(ETH_P_IPV6): ndisc_mc_map((struct in6_addr *) skb->data + 24, tg_addr, card->dev, 0); break; #endif case __constant_htons(ETH_P_IP): ip_hdr = (struct iphdr *)skb->data; (card->dev->type == ARPHRD_IEEE802_TR) ? ip_tr_mc_map(ip_hdr->daddr, tg_addr): ip_eth_mc_map(ip_hdr->daddr, tg_addr); break; default: memcpy(tg_addr, card->dev->broadcast, card->dev->addr_len); } card->stats.multicast++; skb->pkt_type = PACKET_MULTICAST; break; case QETH_CAST_BROADCAST: memcpy(tg_addr, card->dev->broadcast, card->dev->addr_len); card->stats.multicast++; skb->pkt_type = PACKET_BROADCAST; break; case QETH_CAST_UNICAST: case QETH_CAST_ANYCAST: case QETH_CAST_NOCAST: default: skb->pkt_type = PACKET_HOST; memcpy(tg_addr, card->dev->dev_addr, card->dev->addr_len); } if (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_SRC_MAC_ADDR) card->dev->header_ops->create(skb, card->dev, prot, tg_addr, &hdr->hdr.l3.dest_addr[2], card->dev->addr_len); else card->dev->header_ops->create(skb, card->dev, prot, tg_addr, "FAKELL", card->dev->addr_len); } #ifdef CONFIG_TR if (card->dev->type == ARPHRD_IEEE802_TR) skb->protocol = tr_type_trans(skb, card->dev); else #endif skb->protocol = eth_type_trans(skb, card->dev); if (hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_VLAN_FRAME | QETH_HDR_EXT_INCLUDE_VLAN_TAG)) { vlan_id = (hdr->hdr.l3.ext_flags & QETH_HDR_EXT_VLAN_FRAME)? hdr->hdr.l3.vlan_id : *((u16 *)&hdr->hdr.l3.dest_addr[12]); } switch (card->options.checksum_type) { case SW_CHECKSUMMING: skb->ip_summed = CHECKSUM_NONE; break; case NO_CHECKSUMMING: skb->ip_summed = CHECKSUM_UNNECESSARY; break; case HW_CHECKSUMMING: if ((hdr->hdr.l3.ext_flags & (QETH_HDR_EXT_CSUM_HDR_REQ | QETH_HDR_EXT_CSUM_TRANSP_REQ)) == (QETH_HDR_EXT_CSUM_HDR_REQ | QETH_HDR_EXT_CSUM_TRANSP_REQ)) skb->ip_summed = CHECKSUM_UNNECESSARY; else skb->ip_summed = CHECKSUM_NONE; } return vlan_id; } static void qeth_l3_process_inbound_buffer(struct qeth_card *card, struct qeth_qdio_buffer *buf, int index) { struct qdio_buffer_element *element; struct sk_buff *skb; struct qeth_hdr *hdr; int offset; __u16 vlan_tag = 0; unsigned int len; /* get first element of current buffer */ element = (struct qdio_buffer_element *)&buf->buffer->element[0]; offset = 0; if (card->options.performance_stats) card->perf_stats.bufs_rec++; while ((skb = qeth_core_get_next_skb(card, buf->buffer, &element, &offset, &hdr))) { skb->dev = card->dev; /* is device UP ? */ if (!(card->dev->flags & IFF_UP)) { dev_kfree_skb_any(skb); continue; } switch (hdr->hdr.l3.id) { case QETH_HEADER_TYPE_LAYER3: vlan_tag = qeth_l3_rebuild_skb(card, skb, hdr); len = skb->len; if (vlan_tag) if (card->vlangrp) vlan_hwaccel_rx(skb, card->vlangrp, vlan_tag); else { dev_kfree_skb_any(skb); continue; } else netif_rx(skb); break; default: dev_kfree_skb_any(skb); QETH_DBF_TEXT(TRACE, 3, "inbunkno"); QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); continue; } card->stats.rx_packets++; card->stats.rx_bytes += len; } } static int qeth_l3_verify_vlan_dev(struct net_device *dev, struct qeth_card *card) { int rc = 0; struct vlan_group *vg; int i; vg = card->vlangrp; if (!vg) return rc; for (i = 0; i < VLAN_GROUP_ARRAY_LEN; i++) { if (vlan_group_get_device(vg, i) == dev) { rc = QETH_VLAN_CARD; break; } } if (rc && !(vlan_dev_real_dev(dev)->ml_priv == (void *)card)) return 0; return rc; } static int qeth_l3_verify_dev(struct net_device *dev) { struct qeth_card *card; unsigned long flags; int rc = 0; read_lock_irqsave(&qeth_core_card_list.rwlock, flags); list_for_each_entry(card, &qeth_core_card_list.list, list) { if (card->dev == dev) { rc = QETH_REAL_CARD; break; } rc = qeth_l3_verify_vlan_dev(dev, card); if (rc) break; } read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); return rc; } static struct qeth_card *qeth_l3_get_card_from_dev(struct net_device *dev) { struct qeth_card *card = NULL; int rc; rc = qeth_l3_verify_dev(dev); if (rc == QETH_REAL_CARD) card = dev->ml_priv; else if (rc == QETH_VLAN_CARD) card = vlan_dev_real_dev(dev)->ml_priv; if (card && card->options.layer2) card = NULL; QETH_DBF_TEXT_(TRACE, 4, "%d", rc); return card ; } static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode) { int rc = 0; QETH_DBF_TEXT(SETUP, 2, "stopcard"); QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); qeth_set_allowed_threads(card, 0, 1); if (card->read.state == CH_STATE_UP && card->write.state == CH_STATE_UP && (card->state == CARD_STATE_UP)) { if (recovery_mode) qeth_l3_stop(card->dev); else { if (card->dev) { rtnl_lock(); dev_close(card->dev); rtnl_unlock(); } } if (!card->use_hard_stop) { rc = qeth_send_stoplan(card); if (rc) QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); } card->state = CARD_STATE_SOFTSETUP; } if (card->state == CARD_STATE_SOFTSETUP) { qeth_l3_clear_ip_list(card, !card->use_hard_stop, 1); qeth_clear_ipacmd_list(card); card->state = CARD_STATE_HARDSETUP; } if (card->state == CARD_STATE_HARDSETUP) { if (!card->use_hard_stop && (card->info.type != QETH_CARD_TYPE_IQD)) { rc = qeth_l3_put_unique_id(card); if (rc) QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); } qeth_qdio_clear_card(card, 0); qeth_clear_qdio_buffers(card); qeth_clear_working_pool_list(card); card->state = CARD_STATE_DOWN; } if (card->state == CARD_STATE_DOWN) { qeth_clear_cmd_buffers(&card->read); qeth_clear_cmd_buffers(&card->write); } card->use_hard_stop = 0; return rc; } static void qeth_l3_set_multicast_list(struct net_device *dev) { struct qeth_card *card = dev->ml_priv; QETH_DBF_TEXT(TRACE, 3, "setmulti"); if (qeth_threads_running(card, QETH_RECOVER_THREAD) && (card->state != CARD_STATE_UP)) return; qeth_l3_delete_mc_addresses(card); qeth_l3_add_multicast_ipv4(card); #ifdef CONFIG_QETH_IPV6 qeth_l3_add_multicast_ipv6(card); #endif qeth_l3_set_ip_addr_list(card); if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) return; qeth_setadp_promisc_mode(card); } static const char *qeth_l3_arp_get_error_cause(int *rc) { switch (*rc) { case QETH_IPA_ARP_RC_FAILED: *rc = -EIO; return "operation failed"; case QETH_IPA_ARP_RC_NOTSUPP: *rc = -EOPNOTSUPP; return "operation not supported"; case QETH_IPA_ARP_RC_OUT_OF_RANGE: *rc = -EINVAL; return "argument out of range"; case QETH_IPA_ARP_RC_Q_NOTSUPP: *rc = -EOPNOTSUPP; return "query operation not supported"; case QETH_IPA_ARP_RC_Q_NO_DATA: *rc = -ENOENT; return "no query data available"; default: return "unknown error"; } } static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries) { int tmp; int rc; QETH_DBF_TEXT(TRACE, 3, "arpstnoe"); /* * currently GuestLAN only supports the ARP assist function * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_SET_NO_ENTRIES; * thus we say EOPNOTSUPP for this ARP function */ if (card->info.guestlan) return -EOPNOTSUPP; if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { return -EOPNOTSUPP; } rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING, IPA_CMD_ASS_ARP_SET_NO_ENTRIES, no_entries); if (rc) { tmp = rc; QETH_DBF_MESSAGE(2, "Could not set number of ARP entries on " "%s: %s (0x%x/%d)\n", QETH_CARD_IFNAME(card), qeth_l3_arp_get_error_cause(&rc), tmp, tmp); } return rc; } static void qeth_l3_copy_arp_entries_stripped(struct qeth_arp_query_info *qinfo, struct qeth_arp_query_data *qdata, int entry_size, int uentry_size) { char *entry_ptr; char *uentry_ptr; int i; entry_ptr = (char *)&qdata->data; uentry_ptr = (char *)(qinfo->udata + qinfo->udata_offset); for (i = 0; i < qdata->no_entries; ++i) { /* strip off 32 bytes "media specific information" */ memcpy(uentry_ptr, (entry_ptr + 32), entry_size - 32); entry_ptr += entry_size; uentry_ptr += uentry_size; } } static int qeth_l3_arp_query_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd; struct qeth_arp_query_data *qdata; struct qeth_arp_query_info *qinfo; int entry_size; int uentry_size; int i; QETH_DBF_TEXT(TRACE, 4, "arpquecb"); qinfo = (struct qeth_arp_query_info *) reply->param; cmd = (struct qeth_ipa_cmd *) data; if (cmd->hdr.return_code) { QETH_DBF_TEXT_(TRACE, 4, "qaer1%i", cmd->hdr.return_code); return 0; } if (cmd->data.setassparms.hdr.return_code) { cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code; QETH_DBF_TEXT_(TRACE, 4, "qaer2%i", cmd->hdr.return_code); return 0; } qdata = &cmd->data.setassparms.data.query_arp; switch (qdata->reply_bits) { case 5: uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry5); if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) uentry_size = sizeof(struct qeth_arp_qi_entry5_short); break; case 7: /* fall through to default */ default: /* tr is the same as eth -> entry7 */ uentry_size = entry_size = sizeof(struct qeth_arp_qi_entry7); if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) uentry_size = sizeof(struct qeth_arp_qi_entry7_short); break; } /* check if there is enough room in userspace */ if ((qinfo->udata_len - qinfo->udata_offset) < qdata->no_entries * uentry_size){ QETH_DBF_TEXT_(TRACE, 4, "qaer3%i", -ENOMEM); cmd->hdr.return_code = -ENOMEM; goto out_error; } QETH_DBF_TEXT_(TRACE, 4, "anore%i", cmd->data.setassparms.hdr.number_of_replies); QETH_DBF_TEXT_(TRACE, 4, "aseqn%i", cmd->data.setassparms.hdr.seq_no); QETH_DBF_TEXT_(TRACE, 4, "anoen%i", qdata->no_entries); if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) { /* strip off "media specific information" */ qeth_l3_copy_arp_entries_stripped(qinfo, qdata, entry_size, uentry_size); } else /*copy entries to user buffer*/ memcpy(qinfo->udata + qinfo->udata_offset, (char *)&qdata->data, qdata->no_entries*uentry_size); qinfo->no_entries += qdata->no_entries; qinfo->udata_offset += (qdata->no_entries*uentry_size); /* check if all replies received ... */ if (cmd->data.setassparms.hdr.seq_no < cmd->data.setassparms.hdr.number_of_replies) return 1; memcpy(qinfo->udata, &qinfo->no_entries, 4); /* keep STRIP_ENTRIES flag so the user program can distinguish * stripped entries from normal ones */ if (qinfo->mask_bits & QETH_QARP_STRIP_ENTRIES) qdata->reply_bits |= QETH_QARP_STRIP_ENTRIES; memcpy(qinfo->udata + QETH_QARP_MASK_OFFSET, &qdata->reply_bits, 2); return 0; out_error: i = 0; memcpy(qinfo->udata, &i, 4); return 0; } static int qeth_l3_send_ipa_arp_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, int len, int (*reply_cb)(struct qeth_card *, struct qeth_reply *, unsigned long), void *reply_param) { QETH_DBF_TEXT(TRACE, 4, "sendarp"); memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, reply_cb, reply_param); } static int qeth_l3_arp_query(struct qeth_card *card, char __user *udata) { struct qeth_cmd_buffer *iob; struct qeth_arp_query_info qinfo = {0, }; int tmp; int rc; QETH_DBF_TEXT(TRACE, 3, "arpquery"); if (!qeth_is_supported(card,/*IPA_QUERY_ARP_ADDR_INFO*/ IPA_ARP_PROCESSING)) { return -EOPNOTSUPP; } /* get size of userspace buffer and mask_bits -> 6 bytes */ if (copy_from_user(&qinfo, udata, 6)) return -EFAULT; qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); if (!qinfo.udata) return -ENOMEM; qinfo.udata_offset = QETH_QARP_ENTRIES_OFFSET; iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING, IPA_CMD_ASS_ARP_QUERY_INFO, sizeof(int), QETH_PROT_IPV4); rc = qeth_l3_send_ipa_arp_cmd(card, iob, QETH_SETASS_BASE_LEN+QETH_ARP_CMD_LEN, qeth_l3_arp_query_cb, (void *)&qinfo); if (rc) { tmp = rc; QETH_DBF_MESSAGE(2, "Error while querying ARP cache on %s: %s " "(0x%x/%d)\n", QETH_CARD_IFNAME(card), qeth_l3_arp_get_error_cause(&rc), tmp, tmp); if (copy_to_user(udata, qinfo.udata, 4)) rc = -EFAULT; } else { if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) rc = -EFAULT; } kfree(qinfo.udata); return rc; } static int qeth_l3_arp_add_entry(struct qeth_card *card, struct qeth_arp_cache_entry *entry) { struct qeth_cmd_buffer *iob; char buf[16]; int tmp; int rc; QETH_DBF_TEXT(TRACE, 3, "arpadent"); /* * currently GuestLAN only supports the ARP assist function * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_ADD_ENTRY; * thus we say EOPNOTSUPP for this ARP function */ if (card->info.guestlan) return -EOPNOTSUPP; if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { return -EOPNOTSUPP; } iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING, IPA_CMD_ASS_ARP_ADD_ENTRY, sizeof(struct qeth_arp_cache_entry), QETH_PROT_IPV4); rc = qeth_l3_send_setassparms(card, iob, sizeof(struct qeth_arp_cache_entry), (unsigned long) entry, qeth_l3_default_setassparms_cb, NULL); if (rc) { tmp = rc; qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf); QETH_DBF_MESSAGE(2, "Could not add ARP entry for address %s " "on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card), qeth_l3_arp_get_error_cause(&rc), tmp, tmp); } return rc; } static int qeth_l3_arp_remove_entry(struct qeth_card *card, struct qeth_arp_cache_entry *entry) { struct qeth_cmd_buffer *iob; char buf[16] = {0, }; int tmp; int rc; QETH_DBF_TEXT(TRACE, 3, "arprment"); /* * currently GuestLAN only supports the ARP assist function * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_REMOVE_ENTRY; * thus we say EOPNOTSUPP for this ARP function */ if (card->info.guestlan) return -EOPNOTSUPP; if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { return -EOPNOTSUPP; } memcpy(buf, entry, 12); iob = qeth_l3_get_setassparms_cmd(card, IPA_ARP_PROCESSING, IPA_CMD_ASS_ARP_REMOVE_ENTRY, 12, QETH_PROT_IPV4); rc = qeth_l3_send_setassparms(card, iob, 12, (unsigned long)buf, qeth_l3_default_setassparms_cb, NULL); if (rc) { tmp = rc; memset(buf, 0, 16); qeth_l3_ipaddr4_to_string((u8 *)entry->ipaddr, buf); QETH_DBF_MESSAGE(2, "Could not delete ARP entry for address %s" " on %s: %s (0x%x/%d)\n", buf, QETH_CARD_IFNAME(card), qeth_l3_arp_get_error_cause(&rc), tmp, tmp); } return rc; } static int qeth_l3_arp_flush_cache(struct qeth_card *card) { int rc; int tmp; QETH_DBF_TEXT(TRACE, 3, "arpflush"); /* * currently GuestLAN only supports the ARP assist function * IPA_CMD_ASS_ARP_QUERY_INFO, but not IPA_CMD_ASS_ARP_FLUSH_CACHE; * thus we say EOPNOTSUPP for this ARP function */ if (card->info.guestlan || (card->info.type == QETH_CARD_TYPE_IQD)) return -EOPNOTSUPP; if (!qeth_is_supported(card, IPA_ARP_PROCESSING)) { return -EOPNOTSUPP; } rc = qeth_l3_send_simple_setassparms(card, IPA_ARP_PROCESSING, IPA_CMD_ASS_ARP_FLUSH_CACHE, 0); if (rc) { tmp = rc; QETH_DBF_MESSAGE(2, "Could not flush ARP cache on %s: %s " "(0x%x/%d)\n", QETH_CARD_IFNAME(card), qeth_l3_arp_get_error_cause(&rc), tmp, tmp); } return rc; } static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) { struct qeth_card *card = dev->ml_priv; struct qeth_arp_cache_entry arp_entry; struct mii_ioctl_data *mii_data; int rc = 0; if (!card) return -ENODEV; if ((card->state != CARD_STATE_UP) && (card->state != CARD_STATE_SOFTSETUP)) return -ENODEV; switch (cmd) { case SIOC_QETH_ARP_SET_NO_ENTRIES: if (!capable(CAP_NET_ADMIN)) { rc = -EPERM; break; } rc = qeth_l3_arp_set_no_entries(card, rq->ifr_ifru.ifru_ivalue); break; case SIOC_QETH_ARP_QUERY_INFO: if (!capable(CAP_NET_ADMIN)) { rc = -EPERM; break; } rc = qeth_l3_arp_query(card, rq->ifr_ifru.ifru_data); break; case SIOC_QETH_ARP_ADD_ENTRY: if (!capable(CAP_NET_ADMIN)) { rc = -EPERM; break; } if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data, sizeof(struct qeth_arp_cache_entry))) rc = -EFAULT; else rc = qeth_l3_arp_add_entry(card, &arp_entry); break; case SIOC_QETH_ARP_REMOVE_ENTRY: if (!capable(CAP_NET_ADMIN)) { rc = -EPERM; break; } if (copy_from_user(&arp_entry, rq->ifr_ifru.ifru_data, sizeof(struct qeth_arp_cache_entry))) rc = -EFAULT; else rc = qeth_l3_arp_remove_entry(card, &arp_entry); break; case SIOC_QETH_ARP_FLUSH_CACHE: if (!capable(CAP_NET_ADMIN)) { rc = -EPERM; break; } rc = qeth_l3_arp_flush_cache(card); break; case SIOC_QETH_ADP_SET_SNMP_CONTROL: rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); break; case SIOC_QETH_GET_CARD_TYPE: if ((card->info.type == QETH_CARD_TYPE_OSAE) && !card->info.guestlan) return 1; return 0; break; case SIOCGMIIPHY: mii_data = if_mii(rq); mii_data->phy_id = 0; break; case SIOCGMIIREG: mii_data = if_mii(rq); if (mii_data->phy_id != 0) rc = -EINVAL; else mii_data->val_out = qeth_mdio_read(dev, mii_data->phy_id, mii_data->reg_num); break; default: rc = -EOPNOTSUPP; } if (rc) QETH_DBF_TEXT_(TRACE, 2, "ioce%d", rc); return rc; } int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb) { int cast_type = RTN_UNSPEC; if (skb_dst(skb) && skb_dst(skb)->neighbour) { cast_type = skb_dst(skb)->neighbour->type; if ((cast_type == RTN_BROADCAST) || (cast_type == RTN_MULTICAST) || (cast_type == RTN_ANYCAST)) return cast_type; else return RTN_UNSPEC; } /* try something else */ if (skb->protocol == ETH_P_IPV6) return (skb_network_header(skb)[24] == 0xff) ? RTN_MULTICAST : 0; else if (skb->protocol == ETH_P_IP) return ((skb_network_header(skb)[16] & 0xf0) == 0xe0) ? RTN_MULTICAST : 0; /* ... */ if (!memcmp(skb->data, skb->dev->broadcast, 6)) return RTN_BROADCAST; else { u16 hdr_mac; hdr_mac = *((u16 *)skb->data); /* tr multicast? */ switch (card->info.link_type) { case QETH_LINK_TYPE_HSTR: case QETH_LINK_TYPE_LANE_TR: if ((hdr_mac == QETH_TR_MAC_NC) || (hdr_mac == QETH_TR_MAC_C)) return RTN_MULTICAST; break; /* eth or so multicast? */ default: if ((hdr_mac == QETH_ETH_MAC_V4) || (hdr_mac == QETH_ETH_MAC_V6)) return RTN_MULTICAST; } } return cast_type; } static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, struct sk_buff *skb, int ipv, int cast_type) { memset(hdr, 0, sizeof(struct qeth_hdr)); hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3; hdr->hdr.l3.ext_flags = 0; /* * before we're going to overwrite this location with next hop ip. * v6 uses passthrough, v4 sets the tag in the QDIO header. */ if (card->vlangrp && vlan_tx_tag_present(skb)) { if ((ipv == 4) || (card->info.type == QETH_CARD_TYPE_IQD)) hdr->hdr.l3.ext_flags = QETH_HDR_EXT_VLAN_FRAME; else hdr->hdr.l3.ext_flags = QETH_HDR_EXT_INCLUDE_VLAN_TAG; hdr->hdr.l3.vlan_id = vlan_tx_tag_get(skb); } hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr); if (ipv == 4) { /* IPv4 */ hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type); memset(hdr->hdr.l3.dest_addr, 0, 12); if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) { *((u32 *) (&hdr->hdr.l3.dest_addr[12])) = *((u32 *) skb_dst(skb)->neighbour->primary_key); } else { /* fill in destination address used in ip header */ *((u32 *) (&hdr->hdr.l3.dest_addr[12])) = ip_hdr(skb)->daddr; } } else if (ipv == 6) { /* IPv6 */ hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type); if (card->info.type == QETH_CARD_TYPE_IQD) hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU; if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) { memcpy(hdr->hdr.l3.dest_addr, skb_dst(skb)->neighbour->primary_key, 16); } else { /* fill in destination address used in ip header */ memcpy(hdr->hdr.l3.dest_addr, &ipv6_hdr(skb)->daddr, 16); } } else { /* passthrough */ if ((skb->dev->type == ARPHRD_IEEE802_TR) && !memcmp(skb->data + sizeof(struct qeth_hdr) + sizeof(__u16), skb->dev->broadcast, 6)) { hdr->hdr.l3.flags = QETH_CAST_BROADCAST | QETH_HDR_PASSTHRU; } else if (!memcmp(skb->data + sizeof(struct qeth_hdr), skb->dev->broadcast, 6)) { /* broadcast? */ hdr->hdr.l3.flags = QETH_CAST_BROADCAST | QETH_HDR_PASSTHRU; } else { hdr->hdr.l3.flags = (cast_type == RTN_MULTICAST) ? QETH_CAST_MULTICAST | QETH_HDR_PASSTHRU : QETH_CAST_UNICAST | QETH_HDR_PASSTHRU; } } } static void qeth_tso_fill_header(struct qeth_card *card, struct qeth_hdr *qhdr, struct sk_buff *skb) { struct qeth_hdr_tso *hdr = (struct qeth_hdr_tso *)qhdr; struct tcphdr *tcph = tcp_hdr(skb); struct iphdr *iph = ip_hdr(skb); struct ipv6hdr *ip6h = ipv6_hdr(skb); /*fix header to TSO values ...*/ hdr->hdr.hdr.l3.id = QETH_HEADER_TYPE_TSO; /*set values which are fix for the first approach ...*/ hdr->ext.hdr_tot_len = (__u16) sizeof(struct qeth_hdr_ext_tso); hdr->ext.imb_hdr_no = 1; hdr->ext.hdr_type = 1; hdr->ext.hdr_version = 1; hdr->ext.hdr_len = 28; /*insert non-fix values */ hdr->ext.mss = skb_shinfo(skb)->gso_size; hdr->ext.dg_hdr_len = (__u16)(iph->ihl*4 + tcph->doff*4); hdr->ext.payload_len = (__u16)(skb->len - hdr->ext.dg_hdr_len - sizeof(struct qeth_hdr_tso)); tcph->check = 0; if (skb->protocol == ETH_P_IPV6) { ip6h->payload_len = 0; tcph->check = ~csum_ipv6_magic(&ip6h->saddr, &ip6h->daddr, 0, IPPROTO_TCP, 0); } else { /*OSA want us to set these values ...*/ tcph->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, 0, IPPROTO_TCP, 0); iph->tot_len = 0; iph->check = 0; } } static void qeth_tx_csum(struct sk_buff *skb) { __wsum csum; int offset; skb_set_transport_header(skb, skb->csum_start - skb_headroom(skb)); offset = skb->csum_start - skb_headroom(skb); BUG_ON(offset >= skb_headlen(skb)); csum = skb_checksum(skb, offset, skb->len - offset, 0); offset += skb->csum_offset; BUG_ON(offset + sizeof(__sum16) > skb_headlen(skb)); *(__sum16 *)(skb->data + offset) = csum_fold(csum); } static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { int rc; u16 *tag; struct qeth_hdr *hdr = NULL; int elements_needed = 0; int elems; struct qeth_card *card = dev->ml_priv; struct sk_buff *new_skb = NULL; int ipv = qeth_get_ip_version(skb); int cast_type = qeth_l3_get_cast_type(card, skb); struct qeth_qdio_out_q *queue = card->qdio.out_qs [qeth_get_priority_queue(card, skb, ipv, cast_type)]; int tx_bytes = skb->len; enum qeth_large_send_types large_send = QETH_LARGE_SEND_NO; int data_offset = -1; int nr_frags; if ((card->info.type == QETH_CARD_TYPE_IQD) && (skb->protocol != htons(ETH_P_IPV6)) && (skb->protocol != htons(ETH_P_IP))) goto tx_drop; if ((card->state != CARD_STATE_UP) || !card->lan_online) { card->stats.tx_carrier_errors++; goto tx_drop; } if ((cast_type == RTN_BROADCAST) && (card->info.broadcast_capable == 0)) goto tx_drop; if (card->options.performance_stats) { card->perf_stats.outbound_cnt++; card->perf_stats.outbound_start_time = qeth_get_micros(); } if (skb_is_gso(skb)) large_send = card->options.large_send; else if (skb->ip_summed == CHECKSUM_PARTIAL) { qeth_tx_csum(skb); if (card->options.performance_stats) card->perf_stats.tx_csum++; } if ((card->info.type == QETH_CARD_TYPE_IQD) && (!large_send) && (skb_shinfo(skb)->nr_frags == 0)) { new_skb = skb; data_offset = ETH_HLEN; hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); if (!hdr) goto tx_drop; elements_needed++; } else { /* create a clone with writeable headroom */ new_skb = skb_realloc_headroom(skb, sizeof(struct qeth_hdr_tso) + VLAN_HLEN); if (!new_skb) goto tx_drop; } if (card->info.type == QETH_CARD_TYPE_IQD) { if (data_offset < 0) skb_pull(new_skb, ETH_HLEN); } else { if (new_skb->protocol == htons(ETH_P_IP)) { if (card->dev->type == ARPHRD_IEEE802_TR) skb_pull(new_skb, TR_HLEN); else skb_pull(new_skb, ETH_HLEN); } if (new_skb->protocol == ETH_P_IPV6 && card->vlangrp && vlan_tx_tag_present(new_skb)) { skb_push(new_skb, VLAN_HLEN); skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4); skb_copy_to_linear_data_offset(new_skb, 4, new_skb->data + 8, 4); skb_copy_to_linear_data_offset(new_skb, 8, new_skb->data + 12, 4); tag = (u16 *)(new_skb->data + 12); *tag = __constant_htons(ETH_P_8021Q); *(tag + 1) = htons(vlan_tx_tag_get(new_skb)); new_skb->vlan_tci = 0; } } netif_stop_queue(dev); /* fix hardware limitation: as long as we do not have sbal * chaining we can not send long frag lists */ if ((large_send == QETH_LARGE_SEND_TSO) && ((skb_shinfo(new_skb)->nr_frags + 2) > 16)) { if (skb_linearize(new_skb)) goto tx_drop; } if ((large_send == QETH_LARGE_SEND_TSO) && (cast_type == RTN_UNSPEC)) { hdr = (struct qeth_hdr *)skb_push(new_skb, sizeof(struct qeth_hdr_tso)); memset(hdr, 0, sizeof(struct qeth_hdr_tso)); qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type); qeth_tso_fill_header(card, hdr, new_skb); elements_needed++; } else { if (data_offset < 0) { hdr = (struct qeth_hdr *)skb_push(new_skb, sizeof(struct qeth_hdr)); qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type); } else { qeth_l3_fill_header(card, hdr, new_skb, ipv, cast_type); hdr->hdr.l3.length = new_skb->len - data_offset; } } elems = qeth_get_elements_no(card, (void *)hdr, new_skb, elements_needed); if (!elems) { if (data_offset >= 0) kmem_cache_free(qeth_core_header_cache, hdr); goto tx_drop; } elements_needed += elems; nr_frags = skb_shinfo(new_skb)->nr_frags; if (card->info.type != QETH_CARD_TYPE_IQD) rc = qeth_do_send_packet(card, queue, new_skb, hdr, elements_needed); else rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, elements_needed, data_offset, 0); if (!rc) { card->stats.tx_packets++; card->stats.tx_bytes += tx_bytes; if (new_skb != skb) dev_kfree_skb_any(skb); if (card->options.performance_stats) { if (large_send != QETH_LARGE_SEND_NO) { card->perf_stats.large_send_bytes += tx_bytes; card->perf_stats.large_send_cnt++; } if (nr_frags) { card->perf_stats.sg_skbs_sent++; /* nr_frags + skb->data */ card->perf_stats.sg_frags_sent += nr_frags + 1; } } rc = NETDEV_TX_OK; } else { if (data_offset >= 0) kmem_cache_free(qeth_core_header_cache, hdr); if (rc == -EBUSY) { if (new_skb != skb) dev_kfree_skb_any(new_skb); return NETDEV_TX_BUSY; } else goto tx_drop; } netif_wake_queue(dev); if (card->options.performance_stats) card->perf_stats.outbound_time += qeth_get_micros() - card->perf_stats.outbound_start_time; return rc; tx_drop: card->stats.tx_dropped++; card->stats.tx_errors++; if ((new_skb != skb) && new_skb) dev_kfree_skb_any(new_skb); dev_kfree_skb_any(skb); netif_wake_queue(dev); return NETDEV_TX_OK; } static int qeth_l3_open(struct net_device *dev) { struct qeth_card *card = dev->ml_priv; QETH_DBF_TEXT(TRACE, 4, "qethopen"); if (card->state != CARD_STATE_SOFTSETUP) return -ENODEV; card->data.state = CH_STATE_UP; card->state = CARD_STATE_UP; netif_start_queue(dev); if (!card->lan_online && netif_carrier_ok(dev)) netif_carrier_off(dev); return 0; } static int qeth_l3_stop(struct net_device *dev) { struct qeth_card *card = dev->ml_priv; QETH_DBF_TEXT(TRACE, 4, "qethstop"); netif_tx_disable(dev); if (card->state == CARD_STATE_UP) card->state = CARD_STATE_SOFTSETUP; return 0; } static u32 qeth_l3_ethtool_get_rx_csum(struct net_device *dev) { struct qeth_card *card = dev->ml_priv; return (card->options.checksum_type == HW_CHECKSUMMING); } static int qeth_l3_ethtool_set_rx_csum(struct net_device *dev, u32 data) { struct qeth_card *card = dev->ml_priv; enum qeth_card_states old_state; enum qeth_checksum_types csum_type; if ((card->state != CARD_STATE_UP) && (card->state != CARD_STATE_DOWN)) return -EPERM; if (data) csum_type = HW_CHECKSUMMING; else csum_type = SW_CHECKSUMMING; if (card->options.checksum_type != csum_type) { old_state = card->state; if (card->state == CARD_STATE_UP) __qeth_l3_set_offline(card->gdev, 1); card->options.checksum_type = csum_type; if (old_state == CARD_STATE_UP) __qeth_l3_set_online(card->gdev, 1); } return 0; } static int qeth_l3_ethtool_set_tso(struct net_device *dev, u32 data) { struct qeth_card *card = dev->ml_priv; if (data) { if (card->options.large_send == QETH_LARGE_SEND_NO) { if (card->info.type == QETH_CARD_TYPE_IQD) return -EPERM; else card->options.large_send = QETH_LARGE_SEND_TSO; dev->features |= NETIF_F_TSO; } } else { dev->features &= ~NETIF_F_TSO; card->options.large_send = QETH_LARGE_SEND_NO; } return 0; } static const struct ethtool_ops qeth_l3_ethtool_ops = { .get_link = ethtool_op_get_link, .get_tx_csum = ethtool_op_get_tx_csum, .set_tx_csum = ethtool_op_set_tx_hw_csum, .get_rx_csum = qeth_l3_ethtool_get_rx_csum, .set_rx_csum = qeth_l3_ethtool_set_rx_csum, .get_sg = ethtool_op_get_sg, .set_sg = ethtool_op_set_sg, .get_tso = ethtool_op_get_tso, .set_tso = qeth_l3_ethtool_set_tso, .get_strings = qeth_core_get_strings, .get_ethtool_stats = qeth_core_get_ethtool_stats, .get_sset_count = qeth_core_get_sset_count, .get_drvinfo = qeth_core_get_drvinfo, .get_settings = qeth_core_ethtool_get_settings, }; /* * we need NOARP for IPv4 but we want neighbor solicitation for IPv6. Setting * NOARP on the netdevice is no option because it also turns off neighbor * solicitation. For IPv4 we install a neighbor_setup function. We don't want * arp resolution but we want the hard header (packet socket will work * e.g. tcpdump) */ static int qeth_l3_neigh_setup_noarp(struct neighbour *n) { n->nud_state = NUD_NOARP; memcpy(n->ha, "FAKELL", 6); n->output = n->ops->connected_output; return 0; } static int qeth_l3_neigh_setup(struct net_device *dev, struct neigh_parms *np) { if (np->tbl->family == AF_INET) np->neigh_setup = qeth_l3_neigh_setup_noarp; return 0; } static const struct net_device_ops qeth_l3_netdev_ops = { .ndo_open = qeth_l3_open, .ndo_stop = qeth_l3_stop, .ndo_get_stats = qeth_get_stats, .ndo_start_xmit = qeth_l3_hard_start_xmit, .ndo_validate_addr = eth_validate_addr, .ndo_set_multicast_list = qeth_l3_set_multicast_list, .ndo_do_ioctl = qeth_l3_do_ioctl, .ndo_change_mtu = qeth_change_mtu, .ndo_vlan_rx_register = qeth_l3_vlan_rx_register, .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, .ndo_tx_timeout = qeth_tx_timeout, }; static const struct net_device_ops qeth_l3_osa_netdev_ops = { .ndo_open = qeth_l3_open, .ndo_stop = qeth_l3_stop, .ndo_get_stats = qeth_get_stats, .ndo_start_xmit = qeth_l3_hard_start_xmit, .ndo_validate_addr = eth_validate_addr, .ndo_set_multicast_list = qeth_l3_set_multicast_list, .ndo_do_ioctl = qeth_l3_do_ioctl, .ndo_change_mtu = qeth_change_mtu, .ndo_vlan_rx_register = qeth_l3_vlan_rx_register, .ndo_vlan_rx_add_vid = qeth_l3_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = qeth_l3_vlan_rx_kill_vid, .ndo_tx_timeout = qeth_tx_timeout, .ndo_neigh_setup = qeth_l3_neigh_setup, }; static int qeth_l3_setup_netdev(struct qeth_card *card) { if (card->info.type == QETH_CARD_TYPE_OSAE) { if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) || (card->info.link_type == QETH_LINK_TYPE_HSTR)) { #ifdef CONFIG_TR card->dev = alloc_trdev(0); #endif if (!card->dev) return -ENODEV; card->dev->netdev_ops = &qeth_l3_netdev_ops; } else { card->dev = alloc_etherdev(0); if (!card->dev) return -ENODEV; card->dev->netdev_ops = &qeth_l3_osa_netdev_ops; /*IPv6 address autoconfiguration stuff*/ qeth_l3_get_unique_id(card); if (!(card->info.unique_id & UNIQUE_ID_NOT_BY_CARD)) card->dev->dev_id = card->info.unique_id & 0xffff; } } else if (card->info.type == QETH_CARD_TYPE_IQD) { card->dev = alloc_netdev(0, "hsi%d", ether_setup); if (!card->dev) return -ENODEV; card->dev->flags |= IFF_NOARP; card->dev->netdev_ops = &qeth_l3_netdev_ops; qeth_l3_iqd_read_initial_mac(card); } else return -ENODEV; card->dev->ml_priv = card; card->dev->watchdog_timeo = QETH_TX_TIMEOUT; card->dev->mtu = card->info.initial_mtu; SET_ETHTOOL_OPS(card->dev, &qeth_l3_ethtool_ops); card->dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER; card->dev->priv_flags &= ~IFF_XMIT_DST_RELEASE; SET_NETDEV_DEV(card->dev, &card->gdev->dev); return register_netdev(card->dev); } static void qeth_l3_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err, unsigned int queue, int first_element, int count, unsigned long card_ptr) { struct net_device *net_dev; struct qeth_card *card; struct qeth_qdio_buffer *buffer; int index; int i; card = (struct qeth_card *) card_ptr; net_dev = card->dev; if (card->options.performance_stats) { card->perf_stats.inbound_cnt++; card->perf_stats.inbound_start_time = qeth_get_micros(); } if (qdio_err & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) { QETH_DBF_TEXT(TRACE, 1, "qdinchk"); QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card)); QETH_DBF_TEXT_(TRACE, 1, "%04X%04X", first_element, count); QETH_DBF_TEXT_(TRACE, 1, "%04X", queue); qeth_schedule_recovery(card); return; } for (i = first_element; i < (first_element + count); ++i) { index = i % QDIO_MAX_BUFFERS_PER_Q; buffer = &card->qdio.in_q->bufs[index]; if (!(qdio_err && qeth_check_qdio_errors(buffer->buffer, qdio_err, "qinerr"))) qeth_l3_process_inbound_buffer(card, buffer, index); /* clear buffer and give back to hardware */ qeth_put_buffer_pool_entry(card, buffer->pool_entry); qeth_queue_input_buffer(card, index); } if (card->options.performance_stats) card->perf_stats.inbound_time += qeth_get_micros() - card->perf_stats.inbound_start_time; } static int qeth_l3_probe_device(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); qeth_l3_create_device_attributes(&gdev->dev); card->options.layer2 = 0; card->discipline.input_handler = (qdio_handler_t *) qeth_l3_qdio_input_handler; card->discipline.output_handler = (qdio_handler_t *) qeth_qdio_output_handler; card->discipline.recover = qeth_l3_recover; return 0; } static void qeth_l3_remove_device(struct ccwgroup_device *cgdev) { struct qeth_card *card = dev_get_drvdata(&cgdev->dev); qeth_set_allowed_threads(card, 0, 1); wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); if (cgdev->state == CCWGROUP_ONLINE) { card->use_hard_stop = 1; qeth_l3_set_offline(cgdev); } if (card->dev) { unregister_netdev(card->dev); card->dev = NULL; } qeth_l3_remove_device_attributes(&cgdev->dev); qeth_l3_clear_ip_list(card, 0, 0); qeth_l3_clear_ipato_list(card); return; } static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); int rc = 0; enum qeth_card_states recover_flag; BUG_ON(!card); QETH_DBF_TEXT(SETUP, 2, "setonlin"); QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); qeth_set_allowed_threads(card, QETH_RECOVER_THREAD, 1); recover_flag = card->state; rc = ccw_device_set_online(CARD_RDEV(card)); if (rc) { QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); return -EIO; } rc = ccw_device_set_online(CARD_WDEV(card)); if (rc) { QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); return -EIO; } rc = ccw_device_set_online(CARD_DDEV(card)); if (rc) { QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); return -EIO; } rc = qeth_core_hardsetup_card(card); if (rc) { QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); goto out_remove; } qeth_l3_query_ipassists(card, QETH_PROT_IPV4); if (!card->dev && qeth_l3_setup_netdev(card)) goto out_remove; card->state = CARD_STATE_HARDSETUP; qeth_print_status_message(card); /* softsetup */ QETH_DBF_TEXT(SETUP, 2, "softsetp"); rc = qeth_send_startlan(card); if (rc) { QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); if (rc == 0xe080) { dev_warn(&card->gdev->dev, "The LAN is offline\n"); card->lan_online = 0; return 0; } goto out_remove; } else card->lan_online = 1; qeth_set_large_send(card, card->options.large_send); rc = qeth_l3_setadapter_parms(card); if (rc) QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); rc = qeth_l3_start_ipassists(card); if (rc) QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); rc = qeth_l3_setrouting_v4(card); if (rc) QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); rc = qeth_l3_setrouting_v6(card); if (rc) QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); netif_tx_disable(card->dev); rc = qeth_init_qdio_queues(card); if (rc) { QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); goto out_remove; } card->state = CARD_STATE_SOFTSETUP; netif_carrier_on(card->dev); qeth_set_allowed_threads(card, 0xffffffff, 0); qeth_l3_set_ip_addr_list(card); if (recover_flag == CARD_STATE_RECOVER) { if (recovery_mode) qeth_l3_open(card->dev); else { rtnl_lock(); dev_open(card->dev); rtnl_unlock(); } qeth_l3_set_multicast_list(card->dev); } /* let user_space know that device is online */ kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); return 0; out_remove: card->use_hard_stop = 1; qeth_l3_stop_card(card, 0); ccw_device_set_offline(CARD_DDEV(card)); ccw_device_set_offline(CARD_WDEV(card)); ccw_device_set_offline(CARD_RDEV(card)); if (recover_flag == CARD_STATE_RECOVER) card->state = CARD_STATE_RECOVER; else card->state = CARD_STATE_DOWN; return -ENODEV; } static int qeth_l3_set_online(struct ccwgroup_device *gdev) { return __qeth_l3_set_online(gdev, 0); } static int __qeth_l3_set_offline(struct ccwgroup_device *cgdev, int recovery_mode) { struct qeth_card *card = dev_get_drvdata(&cgdev->dev); int rc = 0, rc2 = 0, rc3 = 0; enum qeth_card_states recover_flag; QETH_DBF_TEXT(SETUP, 3, "setoffl"); QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); if (card->dev && netif_carrier_ok(card->dev)) netif_carrier_off(card->dev); recover_flag = card->state; qeth_l3_stop_card(card, recovery_mode); rc = ccw_device_set_offline(CARD_DDEV(card)); rc2 = ccw_device_set_offline(CARD_WDEV(card)); rc3 = ccw_device_set_offline(CARD_RDEV(card)); if (!rc) rc = (rc2) ? rc2 : rc3; if (rc) QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); if (recover_flag == CARD_STATE_UP) card->state = CARD_STATE_RECOVER; /* let user_space know that device is offline */ kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); return 0; } static int qeth_l3_set_offline(struct ccwgroup_device *cgdev) { return __qeth_l3_set_offline(cgdev, 0); } static int qeth_l3_recover(void *ptr) { struct qeth_card *card; int rc = 0; card = (struct qeth_card *) ptr; QETH_DBF_TEXT(TRACE, 2, "recover1"); QETH_DBF_HEX(TRACE, 2, &card, sizeof(void *)); if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) return 0; QETH_DBF_TEXT(TRACE, 2, "recover2"); dev_warn(&card->gdev->dev, "A recovery process has been started for the device\n"); card->use_hard_stop = 1; __qeth_l3_set_offline(card->gdev, 1); rc = __qeth_l3_set_online(card->gdev, 1); /* don't run another scheduled recovery */ qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); if (!rc) dev_info(&card->gdev->dev, "Device successfully recovered!\n"); else { rtnl_lock(); dev_close(card->dev); rtnl_unlock(); dev_warn(&card->gdev->dev, "The qeth device driver " "failed to recover an error on the device\n"); } return 0; } static void qeth_l3_shutdown(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); qeth_l3_clear_ip_list(card, 0, 0); qeth_qdio_clear_card(card, 0); qeth_clear_qdio_buffers(card); } static int qeth_l3_pm_suspend(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); if (card->dev) netif_device_detach(card->dev); qeth_set_allowed_threads(card, 0, 1); wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); if (gdev->state == CCWGROUP_OFFLINE) return 0; if (card->state == CARD_STATE_UP) { card->use_hard_stop = 1; __qeth_l3_set_offline(card->gdev, 1); } else __qeth_l3_set_offline(card->gdev, 0); return 0; } static int qeth_l3_pm_resume(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); int rc = 0; if (gdev->state == CCWGROUP_OFFLINE) goto out; if (card->state == CARD_STATE_RECOVER) { rc = __qeth_l3_set_online(card->gdev, 1); if (rc) { if (card->dev) { rtnl_lock(); dev_close(card->dev); rtnl_unlock(); } } } else rc = __qeth_l3_set_online(card->gdev, 0); out: qeth_set_allowed_threads(card, 0xffffffff, 0); if (card->dev) netif_device_attach(card->dev); if (rc) dev_warn(&card->gdev->dev, "The qeth device driver " "failed to recover an error on the device\n"); return rc; } struct ccwgroup_driver qeth_l3_ccwgroup_driver = { .probe = qeth_l3_probe_device, .remove = qeth_l3_remove_device, .set_online = qeth_l3_set_online, .set_offline = qeth_l3_set_offline, .shutdown = qeth_l3_shutdown, .freeze = qeth_l3_pm_suspend, .thaw = qeth_l3_pm_resume, .restore = qeth_l3_pm_resume, }; EXPORT_SYMBOL_GPL(qeth_l3_ccwgroup_driver); static int qeth_l3_ip_event(struct notifier_block *this, unsigned long event, void *ptr) { struct in_ifaddr *ifa = (struct in_ifaddr *)ptr; struct net_device *dev = (struct net_device *)ifa->ifa_dev->dev; struct qeth_ipaddr *addr; struct qeth_card *card; if (dev_net(dev) != &init_net) return NOTIFY_DONE; QETH_DBF_TEXT(TRACE, 3, "ipevent"); card = qeth_l3_get_card_from_dev(dev); if (!card) return NOTIFY_DONE; addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV4); if (addr != NULL) { addr->u.a4.addr = ifa->ifa_address; addr->u.a4.mask = ifa->ifa_mask; addr->type = QETH_IP_TYPE_NORMAL; } else goto out; switch (event) { case NETDEV_UP: if (!qeth_l3_add_ip(card, addr)) kfree(addr); break; case NETDEV_DOWN: if (!qeth_l3_delete_ip(card, addr)) kfree(addr); break; default: break; } qeth_l3_set_ip_addr_list(card); out: return NOTIFY_DONE; } static struct notifier_block qeth_l3_ip_notifier = { qeth_l3_ip_event, NULL, }; #ifdef CONFIG_QETH_IPV6 /** * IPv6 event handler */ static int qeth_l3_ip6_event(struct notifier_block *this, unsigned long event, void *ptr) { struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr; struct net_device *dev = (struct net_device *)ifa->idev->dev; struct qeth_ipaddr *addr; struct qeth_card *card; QETH_DBF_TEXT(TRACE, 3, "ip6event"); card = qeth_l3_get_card_from_dev(dev); if (!card) return NOTIFY_DONE; if (!qeth_is_supported(card, IPA_IPV6)) return NOTIFY_DONE; addr = qeth_l3_get_addr_buffer(QETH_PROT_IPV6); if (addr != NULL) { memcpy(&addr->u.a6.addr, &ifa->addr, sizeof(struct in6_addr)); addr->u.a6.pfxlen = ifa->prefix_len; addr->type = QETH_IP_TYPE_NORMAL; } else goto out; switch (event) { case NETDEV_UP: if (!qeth_l3_add_ip(card, addr)) kfree(addr); break; case NETDEV_DOWN: if (!qeth_l3_delete_ip(card, addr)) kfree(addr); break; default: break; } qeth_l3_set_ip_addr_list(card); out: return NOTIFY_DONE; } static struct notifier_block qeth_l3_ip6_notifier = { qeth_l3_ip6_event, NULL, }; #endif static int qeth_l3_register_notifiers(void) { int rc; QETH_DBF_TEXT(TRACE, 5, "regnotif"); rc = register_inetaddr_notifier(&qeth_l3_ip_notifier); if (rc) return rc; #ifdef CONFIG_QETH_IPV6 rc = register_inet6addr_notifier(&qeth_l3_ip6_notifier); if (rc) { unregister_inetaddr_notifier(&qeth_l3_ip_notifier); return rc; } #else pr_warning("There is no IPv6 support for the layer 3 discipline\n"); #endif return 0; } static void qeth_l3_unregister_notifiers(void) { QETH_DBF_TEXT(TRACE, 5, "unregnot"); BUG_ON(unregister_inetaddr_notifier(&qeth_l3_ip_notifier)); #ifdef CONFIG_QETH_IPV6 BUG_ON(unregister_inet6addr_notifier(&qeth_l3_ip6_notifier)); #endif /* QETH_IPV6 */ } static int __init qeth_l3_init(void) { int rc = 0; pr_info("register layer 3 discipline\n"); rc = qeth_l3_register_notifiers(); return rc; } static void __exit qeth_l3_exit(void) { qeth_l3_unregister_notifiers(); pr_info("unregister layer 3 discipline\n"); } module_init(qeth_l3_init); module_exit(qeth_l3_exit); MODULE_AUTHOR("Frank Blaschka "); MODULE_DESCRIPTION("qeth layer 3 discipline"); MODULE_LICENSE("GPL");