// SPDX-License-Identifier: GPL-2.0 /* * 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 "qeth_core.h" #include "qeth_l2.h" static int qeth_l2_set_offline(struct ccwgroup_device *); static void qeth_bridgeport_query_support(struct qeth_card *card); static void qeth_bridge_state_change(struct qeth_card *card, struct qeth_ipa_cmd *cmd); static void qeth_bridge_host_event(struct qeth_card *card, struct qeth_ipa_cmd *cmd); static void qeth_l2_vnicc_set_defaults(struct qeth_card *card); static void qeth_l2_vnicc_init(struct qeth_card *card); static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, u32 *timeout); static int qeth_l2_setdelmac_makerc(struct qeth_card *card, u16 retcode) { int rc; if (retcode) QETH_CARD_TEXT_(card, 2, "err%04x", retcode); switch (retcode) { case IPA_RC_SUCCESS: rc = 0; break; case IPA_RC_L2_UNSUPPORTED_CMD: rc = -EOPNOTSUPP; break; case IPA_RC_L2_ADDR_TABLE_FULL: rc = -ENOSPC; break; case IPA_RC_L2_DUP_MAC: case IPA_RC_L2_DUP_LAYER3_MAC: rc = -EEXIST; break; case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: rc = -EPERM; break; case IPA_RC_L2_MAC_NOT_FOUND: rc = -ENOENT; break; default: rc = -EIO; break; } return rc; } static int qeth_l2_send_setdelmac_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; return qeth_l2_setdelmac_makerc(card, cmd->hdr.return_code); } static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, enum qeth_ipa_cmds ipacmd) { struct qeth_ipa_cmd *cmd; struct qeth_cmd_buffer *iob; QETH_CARD_TEXT(card, 2, "L2sdmac"); iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); if (!iob) return -ENOMEM; cmd = __ipa_cmd(iob); cmd->data.setdelmac.mac_length = ETH_ALEN; ether_addr_copy(cmd->data.setdelmac.mac, mac); return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelmac_cb, NULL); } static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) { int rc; QETH_CARD_TEXT(card, 2, "L2Setmac"); rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC); if (rc == 0) { dev_info(&card->gdev->dev, "MAC address %pM successfully registered\n", mac); } else { switch (rc) { case -EEXIST: dev_warn(&card->gdev->dev, "MAC address %pM already exists\n", mac); break; case -EPERM: dev_warn(&card->gdev->dev, "MAC address %pM is not authorized\n", mac); break; } } return rc; } static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac) { enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ? IPA_CMD_SETGMAC : IPA_CMD_SETVMAC; int rc; QETH_CARD_TEXT(card, 2, "L2Wmac"); rc = qeth_l2_send_setdelmac(card, mac, cmd); if (rc == -EEXIST) QETH_DBF_MESSAGE(2, "MAC already registered on device %x\n", CARD_DEVID(card)); else if (rc) QETH_DBF_MESSAGE(2, "Failed to register MAC on device %x: %d\n", CARD_DEVID(card), rc); return rc; } static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac) { enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ? IPA_CMD_DELGMAC : IPA_CMD_DELVMAC; int rc; QETH_CARD_TEXT(card, 2, "L2Rmac"); rc = qeth_l2_send_setdelmac(card, mac, cmd); if (rc) QETH_DBF_MESSAGE(2, "Failed to delete MAC on device %u: %d\n", CARD_DEVID(card), rc); return rc; } static void qeth_l2_drain_rx_mode_cache(struct qeth_card *card) { struct qeth_mac *mac; struct hlist_node *tmp; int i; hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { hash_del(&mac->hnode); kfree(mac); } } static void qeth_l2_fill_header(struct qeth_qdio_out_q *queue, struct qeth_hdr *hdr, struct sk_buff *skb, int ipv, int cast_type, unsigned int data_len) { struct vlan_ethhdr *veth = vlan_eth_hdr(skb); hdr->hdr.l2.pkt_length = data_len; if (skb_is_gso(skb)) { hdr->hdr.l2.id = QETH_HEADER_TYPE_L2_TSO; } else { hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; if (skb->ip_summed == CHECKSUM_PARTIAL) { qeth_tx_csum(skb, &hdr->hdr.l2.flags[1], ipv); QETH_TXQ_STAT_INC(queue, skbs_csum); } } /* set byte byte 3 to casting flags */ if (cast_type == RTN_MULTICAST) hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST; else if (cast_type == RTN_BROADCAST) hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST; else hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; /* VSWITCH relies on the VLAN * information to be present in * the QDIO header */ if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN; hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI); } } static int qeth_l2_setdelvlan_makerc(struct qeth_card *card, u16 retcode) { if (retcode) QETH_CARD_TEXT_(card, 2, "err%04x", retcode); switch (retcode) { case IPA_RC_SUCCESS: return 0; case IPA_RC_L2_INVALID_VLAN_ID: return -EINVAL; case IPA_RC_L2_DUP_VLAN_ID: return -EEXIST; case IPA_RC_L2_VLAN_ID_NOT_FOUND: return -ENOENT; case IPA_RC_L2_VLAN_ID_NOT_ALLOWED: return -EPERM; default: return -EIO; } } static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; QETH_CARD_TEXT(card, 2, "L2sdvcb"); if (cmd->hdr.return_code) { QETH_DBF_MESSAGE(2, "Error in processing VLAN %u on device %x: %#x.\n", cmd->data.setdelvlan.vlan_id, CARD_DEVID(card), cmd->hdr.return_code); QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command); } return qeth_l2_setdelvlan_makerc(card, cmd->hdr.return_code); } static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i, enum qeth_ipa_cmds ipacmd) { struct qeth_ipa_cmd *cmd; struct qeth_cmd_buffer *iob; QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd); iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); if (!iob) return -ENOMEM; cmd = __ipa_cmd(iob); cmd->data.setdelvlan.vlan_id = i; return qeth_send_ipa_cmd(card, iob, qeth_l2_send_setdelvlan_cb, NULL); } static int qeth_l2_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid) { struct qeth_card *card = dev->ml_priv; QETH_CARD_TEXT_(card, 4, "aid:%d", vid); if (!vid) return 0; return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); } static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid) { struct qeth_card *card = dev->ml_priv; QETH_CARD_TEXT_(card, 4, "kid:%d", vid); if (!vid) return 0; return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); } static void qeth_l2_stop_card(struct qeth_card *card) { QETH_DBF_TEXT(SETUP , 2, "stopcard"); QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); qeth_set_allowed_threads(card, 0, 1); cancel_work_sync(&card->rx_mode_work); qeth_l2_drain_rx_mode_cache(card); if (card->state == CARD_STATE_SOFTSETUP) { qeth_clear_ipacmd_list(card); card->state = CARD_STATE_HARDSETUP; } if (card->state == CARD_STATE_HARDSETUP) { qeth_qdio_clear_card(card, 0); qeth_drain_output_queues(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); } flush_workqueue(card->event_wq); card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; } static int qeth_l2_process_inbound_buffer(struct qeth_card *card, int budget, int *done) { int work_done = 0; struct sk_buff *skb; struct qeth_hdr *hdr; unsigned int len; *done = 0; WARN_ON_ONCE(!budget); while (budget) { skb = qeth_core_get_next_skb(card, &card->qdio.in_q->bufs[card->rx.b_index], &card->rx.b_element, &card->rx.e_offset, &hdr); if (!skb) { *done = 1; break; } switch (hdr->hdr.l2.id) { case QETH_HEADER_TYPE_LAYER2: skb->protocol = eth_type_trans(skb, skb->dev); qeth_rx_csum(card, skb, hdr->hdr.l2.flags[1]); len = skb->len; napi_gro_receive(&card->napi, skb); break; case QETH_HEADER_TYPE_OSN: if (IS_OSN(card)) { skb_push(skb, sizeof(struct qeth_hdr)); skb_copy_to_linear_data(skb, hdr, sizeof(struct qeth_hdr)); len = skb->len; card->osn_info.data_cb(skb); break; } /* else unknown */ default: dev_kfree_skb_any(skb); QETH_CARD_TEXT(card, 3, "inbunkno"); QETH_DBF_HEX(CTRL, 3, hdr, sizeof(*hdr)); continue; } work_done++; budget--; QETH_CARD_STAT_INC(card, rx_packets); QETH_CARD_STAT_ADD(card, rx_bytes, len); } return work_done; } static int qeth_l2_request_initial_mac(struct qeth_card *card) { int rc = 0; QETH_DBF_TEXT(SETUP, 2, "l2reqmac"); QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); if (MACHINE_IS_VM) { rc = qeth_vm_request_mac(card); if (!rc) goto out; QETH_DBF_MESSAGE(2, "z/VM MAC Service failed on device %x: %#x\n", CARD_DEVID(card), rc); QETH_DBF_TEXT_(SETUP, 2, "err%04x", rc); /* fall back to alternative mechanism: */ } if (!IS_OSN(card)) { rc = qeth_setadpparms_change_macaddr(card); if (!rc) goto out; QETH_DBF_MESSAGE(2, "READ_MAC Assist failed on device %x: %#x\n", CARD_DEVID(card), rc); QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc); /* fall back once more: */ } /* some devices don't support a custom MAC address: */ if (IS_OSM(card) || IS_OSX(card)) return (rc) ? rc : -EADDRNOTAVAIL; eth_hw_addr_random(card->dev); out: QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, card->dev->addr_len); return 0; } static void qeth_l2_register_dev_addr(struct qeth_card *card) { if (!is_valid_ether_addr(card->dev->dev_addr)) qeth_l2_request_initial_mac(card); if (!IS_OSN(card) && !qeth_l2_send_setmac(card, card->dev->dev_addr)) card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; } static int qeth_l2_validate_addr(struct net_device *dev) { struct qeth_card *card = dev->ml_priv; if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED) return eth_validate_addr(dev); QETH_CARD_TEXT(card, 4, "nomacadr"); return -EPERM; } static int qeth_l2_set_mac_address(struct net_device *dev, void *p) { struct sockaddr *addr = p; struct qeth_card *card = dev->ml_priv; u8 old_addr[ETH_ALEN]; int rc = 0; QETH_CARD_TEXT(card, 3, "setmac"); if (IS_OSM(card) || IS_OSX(card)) { QETH_CARD_TEXT(card, 3, "setmcTYP"); return -EOPNOTSUPP; } QETH_CARD_HEX(card, 3, addr->sa_data, ETH_ALEN); if (!is_valid_ether_addr(addr->sa_data)) return -EADDRNOTAVAIL; /* don't register the same address twice */ if (ether_addr_equal_64bits(dev->dev_addr, addr->sa_data) && (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) return 0; /* add the new address, switch over, drop the old */ rc = qeth_l2_send_setmac(card, addr->sa_data); if (rc) return rc; ether_addr_copy(old_addr, dev->dev_addr); ether_addr_copy(dev->dev_addr, addr->sa_data); if (card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED) qeth_l2_remove_mac(card, old_addr); card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; return 0; } static void qeth_promisc_to_bridge(struct qeth_card *card) { struct net_device *dev = card->dev; enum qeth_ipa_promisc_modes promisc_mode; int role; int rc; QETH_CARD_TEXT(card, 3, "pmisc2br"); if (!card->options.sbp.reflect_promisc) return; promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON : SET_PROMISC_MODE_OFF; if (promisc_mode == card->info.promisc_mode) return; if (promisc_mode == SET_PROMISC_MODE_ON) { if (card->options.sbp.reflect_promisc_primary) role = QETH_SBP_ROLE_PRIMARY; else role = QETH_SBP_ROLE_SECONDARY; } else role = QETH_SBP_ROLE_NONE; rc = qeth_bridgeport_setrole(card, role); QETH_DBF_TEXT_(SETUP, 2, "bpm%c%04x", (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc); if (!rc) { card->options.sbp.role = role; card->info.promisc_mode = promisc_mode; } } /* New MAC address is added to the hash table and marked to be written on card * only if there is not in the hash table storage already * */ static void qeth_l2_add_mac(struct qeth_card *card, struct netdev_hw_addr *ha) { u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); struct qeth_mac *mac; hash_for_each_possible(card->mac_htable, mac, hnode, mac_hash) { if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) { mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; return; } } mac = kzalloc(sizeof(struct qeth_mac), GFP_ATOMIC); if (!mac) return; ether_addr_copy(mac->mac_addr, ha->addr); mac->disp_flag = QETH_DISP_ADDR_ADD; hash_add(card->mac_htable, &mac->hnode, mac_hash); } static void qeth_l2_rx_mode_work(struct work_struct *work) { struct qeth_card *card = container_of(work, struct qeth_card, rx_mode_work); struct net_device *dev = card->dev; struct netdev_hw_addr *ha; struct qeth_mac *mac; struct hlist_node *tmp; int i; int rc; QETH_CARD_TEXT(card, 3, "setmulti"); netif_addr_lock_bh(dev); netdev_for_each_mc_addr(ha, dev) qeth_l2_add_mac(card, ha); netdev_for_each_uc_addr(ha, dev) qeth_l2_add_mac(card, ha); netif_addr_unlock_bh(dev); hash_for_each_safe(card->mac_htable, i, tmp, mac, hnode) { switch (mac->disp_flag) { case QETH_DISP_ADDR_DELETE: qeth_l2_remove_mac(card, mac->mac_addr); hash_del(&mac->hnode); kfree(mac); break; case QETH_DISP_ADDR_ADD: rc = qeth_l2_write_mac(card, mac->mac_addr); if (rc) { hash_del(&mac->hnode); kfree(mac); break; } /* fall through */ default: /* for next call to set_rx_mode(): */ mac->disp_flag = QETH_DISP_ADDR_DELETE; } } if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) qeth_setadp_promisc_mode(card); else qeth_promisc_to_bridge(card); } static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, struct qeth_qdio_out_q *queue) { struct qeth_hdr *hdr = (struct qeth_hdr *)skb->data; addr_t end = (addr_t)(skb->data + sizeof(*hdr)); addr_t start = (addr_t)skb->data; unsigned int elements = 0; unsigned int hd_len = 0; int rc; if (skb->protocol == htons(ETH_P_IPV6)) return -EPROTONOSUPPORT; if (qeth_get_elements_for_range(start, end) > 1) { /* Misaligned HW header, move it to its own buffer element. */ hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC); if (!hdr) return -ENOMEM; hd_len = sizeof(*hdr); skb_copy_from_linear_data(skb, (char *)hdr, hd_len); elements++; } elements += qeth_count_elements(skb, hd_len); if (elements > queue->max_elements) { rc = -E2BIG; goto out; } rc = qeth_do_send_packet(card, queue, skb, hdr, hd_len, hd_len, elements); out: if (rc && hd_len) kmem_cache_free(qeth_core_header_cache, hdr); return rc; } static netdev_tx_t qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct qeth_card *card = dev->ml_priv; u16 txq = skb_get_queue_mapping(skb); struct qeth_qdio_out_q *queue; int tx_bytes = skb->len; int rc; if (IS_IQD(card)) txq = qeth_iqd_translate_txq(dev, txq); queue = card->qdio.out_qs[txq]; if (IS_OSN(card)) rc = qeth_l2_xmit_osn(card, skb, queue); else rc = qeth_xmit(card, skb, queue, qeth_get_ip_version(skb), qeth_get_ether_cast_type(skb), qeth_l2_fill_header); if (!rc) { QETH_TXQ_STAT_INC(queue, tx_packets); QETH_TXQ_STAT_ADD(queue, tx_bytes, tx_bytes); return NETDEV_TX_OK; } QETH_TXQ_STAT_INC(queue, tx_dropped); kfree_skb(skb); return NETDEV_TX_OK; } static u16 qeth_l2_select_queue(struct net_device *dev, struct sk_buff *skb, struct net_device *sb_dev) { struct qeth_card *card = dev->ml_priv; if (IS_IQD(card)) return qeth_iqd_select_queue(dev, skb, qeth_get_ether_cast_type(skb), sb_dev); return qeth_get_priority_queue(card, skb); } static const struct device_type qeth_l2_devtype = { .name = "qeth_layer2", .groups = qeth_l2_attr_groups, }; static int qeth_l2_probe_device(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); int rc; qeth_l2_vnicc_set_defaults(card); if (gdev->dev.type == &qeth_generic_devtype) { rc = qeth_l2_create_device_attributes(&gdev->dev); if (rc) return rc; } hash_init(card->mac_htable); INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work); return 0; } static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) { struct qeth_card *card = dev_get_drvdata(&cgdev->dev); if (cgdev->dev.type == &qeth_generic_devtype) qeth_l2_remove_device_attributes(&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) qeth_l2_set_offline(cgdev); cancel_work_sync(&card->close_dev_work); if (qeth_netdev_is_registered(card->dev)) unregister_netdev(card->dev); } static void qeth_l2_set_rx_mode(struct net_device *dev) { struct qeth_card *card = dev->ml_priv; schedule_work(&card->rx_mode_work); } static const struct net_device_ops qeth_l2_netdev_ops = { .ndo_open = qeth_open, .ndo_stop = qeth_stop, .ndo_get_stats64 = qeth_get_stats64, .ndo_start_xmit = qeth_l2_hard_start_xmit, .ndo_features_check = qeth_features_check, .ndo_select_queue = qeth_l2_select_queue, .ndo_validate_addr = qeth_l2_validate_addr, .ndo_set_rx_mode = qeth_l2_set_rx_mode, .ndo_do_ioctl = qeth_do_ioctl, .ndo_set_mac_address = qeth_l2_set_mac_address, .ndo_vlan_rx_add_vid = qeth_l2_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = qeth_l2_vlan_rx_kill_vid, .ndo_tx_timeout = qeth_tx_timeout, .ndo_fix_features = qeth_fix_features, .ndo_set_features = qeth_set_features }; static const struct net_device_ops qeth_osn_netdev_ops = { .ndo_open = qeth_open, .ndo_stop = qeth_stop, .ndo_get_stats64 = qeth_get_stats64, .ndo_start_xmit = qeth_l2_hard_start_xmit, .ndo_validate_addr = eth_validate_addr, .ndo_tx_timeout = qeth_tx_timeout, }; static int qeth_l2_setup_netdev(struct qeth_card *card, bool carrier_ok) { int rc; if (IS_OSN(card)) { card->dev->netdev_ops = &qeth_osn_netdev_ops; card->dev->flags |= IFF_NOARP; goto add_napi; } card->dev->needed_headroom = sizeof(struct qeth_hdr); card->dev->netdev_ops = &qeth_l2_netdev_ops; card->dev->priv_flags |= IFF_UNICAST_FLT; if (IS_OSM(card)) { card->dev->features |= NETIF_F_VLAN_CHALLENGED; } else { if (!IS_VM_NIC(card)) card->dev->hw_features |= NETIF_F_HW_VLAN_CTAG_FILTER; card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; } if (IS_OSD(card) && !IS_VM_NIC(card)) { card->dev->features |= NETIF_F_SG; /* OSA 3S and earlier has no RX/TX support */ if (qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM)) { card->dev->hw_features |= NETIF_F_IP_CSUM; card->dev->vlan_features |= NETIF_F_IP_CSUM; } } if (qeth_is_supported6(card, IPA_OUTBOUND_CHECKSUM_V6)) { card->dev->hw_features |= NETIF_F_IPV6_CSUM; card->dev->vlan_features |= NETIF_F_IPV6_CSUM; } if (qeth_is_supported(card, IPA_INBOUND_CHECKSUM) || qeth_is_supported6(card, IPA_INBOUND_CHECKSUM_V6)) { card->dev->hw_features |= NETIF_F_RXCSUM; card->dev->vlan_features |= NETIF_F_RXCSUM; } if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) { card->dev->hw_features |= NETIF_F_TSO; card->dev->vlan_features |= NETIF_F_TSO; } if (qeth_is_supported6(card, IPA_OUTBOUND_TSO)) { card->dev->hw_features |= NETIF_F_TSO6; card->dev->vlan_features |= NETIF_F_TSO6; } if (card->dev->hw_features & (NETIF_F_TSO | NETIF_F_TSO6)) { card->dev->needed_headroom = sizeof(struct qeth_hdr_tso); netif_set_gso_max_size(card->dev, PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1)); } add_napi: netif_napi_add(card->dev, &card->napi, qeth_poll, QETH_NAPI_WEIGHT); rc = register_netdev(card->dev); if (!rc && carrier_ok) netif_carrier_on(card->dev); if (rc) card->dev->netdev_ops = NULL; return rc; } static int qeth_l2_start_ipassists(struct qeth_card *card) { /* configure isolation level */ if (qeth_set_access_ctrl_online(card, 0)) return -ENODEV; return 0; } static void qeth_l2_trace_features(struct qeth_card *card) { /* Set BridgePort features */ QETH_CARD_TEXT(card, 2, "featuSBP"); QETH_CARD_HEX(card, 2, &card->options.sbp.supported_funcs, sizeof(card->options.sbp.supported_funcs)); /* VNIC Characteristics features */ QETH_CARD_TEXT(card, 2, "feaVNICC"); QETH_CARD_HEX(card, 2, &card->options.vnicc.sup_chars, sizeof(card->options.vnicc.sup_chars)); } static int qeth_l2_set_online(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); struct net_device *dev = card->dev; int rc = 0; bool carrier_ok; mutex_lock(&card->discipline_mutex); mutex_lock(&card->conf_mutex); QETH_DBF_TEXT(SETUP, 2, "setonlin"); QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); rc = qeth_core_hardsetup_card(card, &carrier_ok); if (rc) { QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc); rc = -ENODEV; goto out_remove; } if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) { if (card->info.hwtrap && qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM)) card->info.hwtrap = 0; } else card->info.hwtrap = 0; qeth_bridgeport_query_support(card); if (card->options.sbp.supported_funcs) dev_info(&card->gdev->dev, "The device represents a Bridge Capable Port\n"); qeth_l2_register_dev_addr(card); /* for the rx_bcast characteristic, init VNICC after setmac */ qeth_l2_vnicc_init(card); qeth_trace_features(card); qeth_l2_trace_features(card); qeth_l2_setup_bridgeport_attrs(card); card->state = CARD_STATE_HARDSETUP; qeth_print_status_message(card); /* softsetup */ QETH_DBF_TEXT(SETUP, 2, "softsetp"); if (IS_OSD(card) || IS_OSX(card)) { rc = qeth_l2_start_ipassists(card); if (rc) goto out_remove; } rc = qeth_init_qdio_queues(card); if (rc) { QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); rc = -ENODEV; goto out_remove; } card->state = CARD_STATE_SOFTSETUP; qeth_set_allowed_threads(card, 0xffffffff, 0); if (!qeth_netdev_is_registered(dev)) { rc = qeth_l2_setup_netdev(card, carrier_ok); if (rc) goto out_remove; } else { rtnl_lock(); if (carrier_ok) netif_carrier_on(dev); else netif_carrier_off(dev); netif_device_attach(dev); qeth_enable_hw_features(dev); if (card->info.open_when_online) { card->info.open_when_online = 0; dev_open(dev, NULL); } rtnl_unlock(); } /* let user_space know that device is online */ kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); mutex_unlock(&card->conf_mutex); mutex_unlock(&card->discipline_mutex); return 0; out_remove: qeth_l2_stop_card(card); ccw_device_set_offline(CARD_DDEV(card)); ccw_device_set_offline(CARD_WDEV(card)); ccw_device_set_offline(CARD_RDEV(card)); qdio_free(CARD_DDEV(card)); card->state = CARD_STATE_DOWN; mutex_unlock(&card->conf_mutex); mutex_unlock(&card->discipline_mutex); return rc; } static int __qeth_l2_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; mutex_lock(&card->discipline_mutex); mutex_lock(&card->conf_mutex); QETH_DBF_TEXT(SETUP, 3, "setoffl"); QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); card->info.hwtrap = 1; } rtnl_lock(); card->info.open_when_online = card->dev->flags & IFF_UP; dev_close(card->dev); netif_device_detach(card->dev); netif_carrier_off(card->dev); rtnl_unlock(); qeth_l2_stop_card(card); 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); qdio_free(CARD_DDEV(card)); /* let user_space know that device is offline */ kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); mutex_unlock(&card->conf_mutex); mutex_unlock(&card->discipline_mutex); return 0; } static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) { return __qeth_l2_set_offline(cgdev, 0); } static int qeth_l2_recover(void *ptr) { struct qeth_card *card; int rc = 0; card = (struct qeth_card *) ptr; QETH_CARD_TEXT(card, 2, "recover1"); if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD)) return 0; QETH_CARD_TEXT(card, 2, "recover2"); dev_warn(&card->gdev->dev, "A recovery process has been started for the device\n"); __qeth_l2_set_offline(card->gdev, 1); rc = qeth_l2_set_online(card->gdev); if (!rc) dev_info(&card->gdev->dev, "Device successfully recovered!\n"); else { ccwgroup_set_offline(card->gdev); dev_warn(&card->gdev->dev, "The qeth device driver " "failed to recover an error on the device\n"); } qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); return 0; } static int __init qeth_l2_init(void) { pr_info("register layer 2 discipline\n"); return 0; } static void __exit qeth_l2_exit(void) { pr_info("unregister layer 2 discipline\n"); } static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->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; qeth_l2_set_offline(gdev); return 0; } static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); int rc; rc = qeth_l2_set_online(gdev); qeth_set_allowed_threads(card, 0xffffffff, 0); if (rc) dev_warn(&card->gdev->dev, "The qeth device driver " "failed to recover an error on the device\n"); return rc; } /* Returns zero if the command is successfully "consumed" */ static int qeth_l2_control_event(struct qeth_card *card, struct qeth_ipa_cmd *cmd) { switch (cmd->hdr.command) { case IPA_CMD_SETBRIDGEPORT_OSA: case IPA_CMD_SETBRIDGEPORT_IQD: if (cmd->data.sbp.hdr.command_code == IPA_SBP_BRIDGE_PORT_STATE_CHANGE) { qeth_bridge_state_change(card, cmd); return 0; } else return 1; case IPA_CMD_ADDRESS_CHANGE_NOTIF: qeth_bridge_host_event(card, cmd); return 0; default: return 1; } } struct qeth_discipline qeth_l2_discipline = { .devtype = &qeth_l2_devtype, .process_rx_buffer = qeth_l2_process_inbound_buffer, .recover = qeth_l2_recover, .setup = qeth_l2_probe_device, .remove = qeth_l2_remove_device, .set_online = qeth_l2_set_online, .set_offline = qeth_l2_set_offline, .freeze = qeth_l2_pm_suspend, .thaw = qeth_l2_pm_resume, .restore = qeth_l2_pm_resume, .do_ioctl = NULL, .control_event_handler = qeth_l2_control_event, }; EXPORT_SYMBOL_GPL(qeth_l2_discipline); static int qeth_osn_send_control_data(struct qeth_card *card, int len, struct qeth_cmd_buffer *iob) { struct qeth_channel *channel = iob->channel; int rc = 0; QETH_CARD_TEXT(card, 5, "osndctrd"); wait_event(card->wait_q, qeth_trylock_channel(channel)); iob->finalize(card, iob, len); QETH_DBF_HEX(CTRL, 2, iob->data, min(len, QETH_DBF_CTRL_LEN)); QETH_CARD_TEXT(card, 6, "osnoirqp"); spin_lock_irq(get_ccwdev_lock(channel->ccwdev)); rc = ccw_device_start_timeout(channel->ccwdev, channel->ccw, (addr_t) iob, 0, 0, iob->timeout); spin_unlock_irq(get_ccwdev_lock(channel->ccwdev)); if (rc) { QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: " "ccw_device_start rc = %i\n", rc); QETH_CARD_TEXT_(card, 2, " err%d", rc); qeth_release_buffer(channel, iob); atomic_set(&channel->irq_pending, 0); wake_up(&card->wait_q); } return rc; } static int qeth_osn_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob) { u16 length; QETH_CARD_TEXT(card, 4, "osndipa"); memcpy(&length, QETH_IPA_PDU_LEN_TOTAL(iob->data), 2); return qeth_osn_send_control_data(card, length, iob); } int qeth_osn_assist(struct net_device *dev, void *data, int data_len) { struct qeth_cmd_buffer *iob; struct qeth_card *card; if (!dev) return -ENODEV; card = dev->ml_priv; if (!card) return -ENODEV; QETH_CARD_TEXT(card, 2, "osnsdmc"); if (!qeth_card_hw_is_reachable(card)) return -ENODEV; iob = qeth_wait_for_buffer(&card->write); qeth_prepare_ipa_cmd(card, iob, (u16) data_len); memcpy(__ipa_cmd(iob), data, data_len); return qeth_osn_send_ipa_cmd(card, iob); } EXPORT_SYMBOL(qeth_osn_assist); int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev, int (*assist_cb)(struct net_device *, void *), int (*data_cb)(struct sk_buff *)) { struct qeth_card *card; char bus_id[16]; u16 devno; memcpy(&devno, read_dev_no, 2); sprintf(bus_id, "0.0.%04x", devno); card = qeth_get_card_by_busid(bus_id); if (!card || !IS_OSN(card)) return -ENODEV; *dev = card->dev; QETH_CARD_TEXT(card, 2, "osnreg"); if ((assist_cb == NULL) || (data_cb == NULL)) return -EINVAL; card->osn_info.assist_cb = assist_cb; card->osn_info.data_cb = data_cb; return 0; } EXPORT_SYMBOL(qeth_osn_register); void qeth_osn_deregister(struct net_device *dev) { struct qeth_card *card; if (!dev) return; card = dev->ml_priv; if (!card) return; QETH_CARD_TEXT(card, 2, "osndereg"); card->osn_info.assist_cb = NULL; card->osn_info.data_cb = NULL; return; } EXPORT_SYMBOL(qeth_osn_deregister); /* SETBRIDGEPORT support, async notifications */ enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; /** * qeth_bridge_emit_host_event() - bridgeport address change notification * @card: qeth_card structure pointer, for udev events. * @evtype: "normal" register/unregister, or abort, or reset. For abort * and reset token and addr_lnid are unused and may be NULL. * @code: event bitmask: high order bit 0x80 value 1 means removal of an * object, 0 - addition of an object. * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. * @token: "network token" structure identifying physical address of the port. * @addr_lnid: pointer to structure with MAC address and VLAN ID. * * This function is called when registrations and deregistrations are * reported by the hardware, and also when notifications are enabled - * for all currently registered addresses. */ static void qeth_bridge_emit_host_event(struct qeth_card *card, enum qeth_an_event_type evtype, u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) { char str[7][32]; char *env[8]; int i = 0; switch (evtype) { case anev_reg_unreg: snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", (code & IPA_ADDR_CHANGE_CODE_REMOVAL) ? "deregister" : "register"); env[i] = str[i]; i++; if (code & IPA_ADDR_CHANGE_CODE_VLANID) { snprintf(str[i], sizeof(str[i]), "VLAN=%d", addr_lnid->lnid); env[i] = str[i]; i++; } if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { snprintf(str[i], sizeof(str[i]), "MAC=%pM", addr_lnid->mac); env[i] = str[i]; i++; } snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", token->cssid, token->ssid, token->devnum); env[i] = str[i]; i++; snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); env[i] = str[i]; i++; snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", token->chpid); env[i] = str[i]; i++; snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); env[i] = str[i]; i++; break; case anev_abort: snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); env[i] = str[i]; i++; break; case anev_reset: snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); env[i] = str[i]; i++; break; } env[i] = NULL; kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); } struct qeth_bridge_state_data { struct work_struct worker; struct qeth_card *card; struct qeth_sbp_state_change qports; }; static void qeth_bridge_state_change_worker(struct work_struct *work) { struct qeth_bridge_state_data *data = container_of(work, struct qeth_bridge_state_data, worker); /* We are only interested in the first entry - local port */ struct qeth_sbp_port_entry *entry = &data->qports.entry[0]; char env_locrem[32]; char env_role[32]; char env_state[32]; char *env[] = { env_locrem, env_role, env_state, NULL }; /* Role should not change by itself, but if it did, */ /* information from the hardware is authoritative. */ mutex_lock(&data->card->conf_mutex); data->card->options.sbp.role = entry->role; mutex_unlock(&data->card->conf_mutex); snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); snprintf(env_role, sizeof(env_role), "ROLE=%s", (entry->role == QETH_SBP_ROLE_NONE) ? "none" : (entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : (entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : ""); snprintf(env_state, sizeof(env_state), "STATE=%s", (entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : (entry->state == QETH_SBP_STATE_STANDBY) ? "standby" : (entry->state == QETH_SBP_STATE_ACTIVE) ? "active" : ""); kobject_uevent_env(&data->card->gdev->dev.kobj, KOBJ_CHANGE, env); kfree(data); } static void qeth_bridge_state_change(struct qeth_card *card, struct qeth_ipa_cmd *cmd) { struct qeth_sbp_state_change *qports = &cmd->data.sbp.data.state_change; struct qeth_bridge_state_data *data; int extrasize; QETH_CARD_TEXT(card, 2, "brstchng"); if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); return; } extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries; data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize, GFP_ATOMIC); if (!data) { QETH_CARD_TEXT(card, 2, "BPSalloc"); return; } INIT_WORK(&data->worker, qeth_bridge_state_change_worker); data->card = card; memcpy(&data->qports, qports, sizeof(struct qeth_sbp_state_change) + extrasize); queue_work(card->event_wq, &data->worker); } struct qeth_bridge_host_data { struct work_struct worker; struct qeth_card *card; struct qeth_ipacmd_addr_change hostevs; }; static void qeth_bridge_host_event_worker(struct work_struct *work) { struct qeth_bridge_host_data *data = container_of(work, struct qeth_bridge_host_data, worker); int i; if (data->hostevs.lost_event_mask) { dev_info(&data->card->gdev->dev, "Address notification from the Bridge Port stopped %s (%s)\n", data->card->dev->name, (data->hostevs.lost_event_mask == 0x01) ? "Overflow" : (data->hostevs.lost_event_mask == 0x02) ? "Bridge port state change" : "Unknown reason"); mutex_lock(&data->card->conf_mutex); data->card->options.sbp.hostnotification = 0; mutex_unlock(&data->card->conf_mutex); qeth_bridge_emit_host_event(data->card, anev_abort, 0, NULL, NULL); } else for (i = 0; i < data->hostevs.num_entries; i++) { struct qeth_ipacmd_addr_change_entry *entry = &data->hostevs.entry[i]; qeth_bridge_emit_host_event(data->card, anev_reg_unreg, entry->change_code, &entry->token, &entry->addr_lnid); } kfree(data); } static void qeth_bridge_host_event(struct qeth_card *card, struct qeth_ipa_cmd *cmd) { struct qeth_ipacmd_addr_change *hostevs = &cmd->data.addrchange; struct qeth_bridge_host_data *data; int extrasize; QETH_CARD_TEXT(card, 2, "brhostev"); if (cmd->hdr.return_code != 0x0000) { if (cmd->hdr.return_code == 0x0010) { if (hostevs->lost_event_mask == 0x00) hostevs->lost_event_mask = 0xff; } else { QETH_CARD_TEXT_(card, 2, "BPHe%04x", cmd->hdr.return_code); return; } } extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * hostevs->num_entries; data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, GFP_ATOMIC); if (!data) { QETH_CARD_TEXT(card, 2, "BPHalloc"); return; } INIT_WORK(&data->worker, qeth_bridge_host_event_worker); data->card = card; memcpy(&data->hostevs, hostevs, sizeof(struct qeth_ipacmd_addr_change) + extrasize); queue_work(card->event_wq, &data->worker); } /* SETBRIDGEPORT support; sending commands */ struct _qeth_sbp_cbctl { union { u32 supported; struct { enum qeth_sbp_roles *role; enum qeth_sbp_states *state; } qports; } data; }; static int qeth_bridgeport_makerc(struct qeth_card *card, struct qeth_ipa_cmd *cmd) { struct qeth_ipacmd_setbridgeport *sbp = &cmd->data.sbp; enum qeth_ipa_sbp_cmd setcmd = sbp->hdr.command_code; u16 ipa_rc = cmd->hdr.return_code; u16 sbp_rc = sbp->hdr.return_code; int rc; if (ipa_rc == IPA_RC_SUCCESS && sbp_rc == IPA_RC_SUCCESS) return 0; if ((IS_IQD(card) && ipa_rc == IPA_RC_SUCCESS) || (!IS_IQD(card) && ipa_rc == sbp_rc)) { switch (sbp_rc) { case IPA_RC_SUCCESS: rc = 0; break; case IPA_RC_L2_UNSUPPORTED_CMD: case IPA_RC_UNSUPPORTED_COMMAND: rc = -EOPNOTSUPP; break; case IPA_RC_SBP_OSA_NOT_CONFIGURED: case IPA_RC_SBP_IQD_NOT_CONFIGURED: rc = -ENODEV; /* maybe not the best code here? */ dev_err(&card->gdev->dev, "The device is not configured as a Bridge Port\n"); break; case IPA_RC_SBP_OSA_OS_MISMATCH: case IPA_RC_SBP_IQD_OS_MISMATCH: rc = -EPERM; dev_err(&card->gdev->dev, "A Bridge Port is already configured by a different operating system\n"); break; case IPA_RC_SBP_OSA_ANO_DEV_PRIMARY: case IPA_RC_SBP_IQD_ANO_DEV_PRIMARY: switch (setcmd) { case IPA_SBP_SET_PRIMARY_BRIDGE_PORT: rc = -EEXIST; dev_err(&card->gdev->dev, "The LAN already has a primary Bridge Port\n"); break; case IPA_SBP_SET_SECONDARY_BRIDGE_PORT: rc = -EBUSY; dev_err(&card->gdev->dev, "The device is already a primary Bridge Port\n"); break; default: rc = -EIO; } break; case IPA_RC_SBP_OSA_CURRENT_SECOND: case IPA_RC_SBP_IQD_CURRENT_SECOND: rc = -EBUSY; dev_err(&card->gdev->dev, "The device is already a secondary Bridge Port\n"); break; case IPA_RC_SBP_OSA_LIMIT_SECOND: case IPA_RC_SBP_IQD_LIMIT_SECOND: rc = -EEXIST; dev_err(&card->gdev->dev, "The LAN cannot have more secondary Bridge Ports\n"); break; case IPA_RC_SBP_OSA_CURRENT_PRIMARY: case IPA_RC_SBP_IQD_CURRENT_PRIMARY: rc = -EBUSY; dev_err(&card->gdev->dev, "The device is already a primary Bridge Port\n"); break; case IPA_RC_SBP_OSA_NOT_AUTHD_BY_ZMAN: case IPA_RC_SBP_IQD_NOT_AUTHD_BY_ZMAN: rc = -EACCES; dev_err(&card->gdev->dev, "The device is not authorized to be a Bridge Port\n"); break; default: rc = -EIO; } } else { switch (ipa_rc) { case IPA_RC_NOTSUPP: rc = -EOPNOTSUPP; break; case IPA_RC_UNSUPPORTED_COMMAND: rc = -EOPNOTSUPP; break; default: rc = -EIO; } } if (rc) { QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc); QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc); } return rc; } static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card, enum qeth_ipa_sbp_cmd sbp_cmd, unsigned int cmd_length) { enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD : IPA_CMD_SETBRIDGEPORT_OSA; struct qeth_cmd_buffer *iob; struct qeth_ipa_cmd *cmd; iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0); if (!iob) return iob; cmd = __ipa_cmd(iob); cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) + cmd_length; cmd->data.sbp.hdr.command_code = sbp_cmd; cmd->data.sbp.hdr.used_total = 1; cmd->data.sbp.hdr.seq_no = 1; return iob; } static int qeth_bridgeport_query_support_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; int rc; QETH_CARD_TEXT(card, 2, "brqsupcb"); rc = qeth_bridgeport_makerc(card, cmd); if (rc) return rc; cbctl->data.supported = cmd->data.sbp.data.query_cmds_supp.supported_cmds; return 0; } /** * qeth_bridgeport_query_support() - store bitmask of supported subfunctions. * @card: qeth_card structure pointer. * * Sets bitmask of supported setbridgeport subfunctions in the qeth_card * strucutre: card->options.sbp.supported_funcs. */ static void qeth_bridgeport_query_support(struct qeth_card *card) { struct qeth_cmd_buffer *iob; struct _qeth_sbp_cbctl cbctl; QETH_CARD_TEXT(card, 2, "brqsuppo"); iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED, sizeof(struct qeth_sbp_query_cmds_supp)); if (!iob) return; if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb, &cbctl)) { card->options.sbp.role = QETH_SBP_ROLE_NONE; card->options.sbp.supported_funcs = 0; return; } card->options.sbp.supported_funcs = cbctl.data.supported; } static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports; struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; int rc; QETH_CARD_TEXT(card, 2, "brqprtcb"); rc = qeth_bridgeport_makerc(card, cmd); if (rc) return rc; if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length); return -EINVAL; } /* first entry contains the state of the local port */ if (qports->num_entries > 0) { if (cbctl->data.qports.role) *cbctl->data.qports.role = qports->entry[0].role; if (cbctl->data.qports.state) *cbctl->data.qports.state = qports->entry[0].state; } return 0; } /** * qeth_bridgeport_query_ports() - query local bridgeport status. * @card: qeth_card structure pointer. * @role: Role of the port: 0-none, 1-primary, 2-secondary. * @state: State of the port: 0-inactive, 1-standby, 2-active. * * Returns negative errno-compatible error indication or 0 on success. * * 'role' and 'state' are not updated in case of hardware operation failure. */ int qeth_bridgeport_query_ports(struct qeth_card *card, enum qeth_sbp_roles *role, enum qeth_sbp_states *state) { struct qeth_cmd_buffer *iob; struct _qeth_sbp_cbctl cbctl = { .data = { .qports = { .role = role, .state = state, }, }, }; QETH_CARD_TEXT(card, 2, "brqports"); if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS)) return -EOPNOTSUPP; iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_BRIDGE_PORTS, 0); if (!iob) return -ENOMEM; return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, &cbctl); } static int qeth_bridgeport_set_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; QETH_CARD_TEXT(card, 2, "brsetrcb"); return qeth_bridgeport_makerc(card, cmd); } /** * qeth_bridgeport_setrole() - Assign primary role to the port. * @card: qeth_card structure pointer. * @role: Role to assign. * * Returns negative errno-compatible error indication or 0 on success. */ int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) { int cmdlength; struct qeth_cmd_buffer *iob; enum qeth_ipa_sbp_cmd setcmd; QETH_CARD_TEXT(card, 2, "brsetrol"); switch (role) { case QETH_SBP_ROLE_NONE: setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; cmdlength = sizeof(struct qeth_sbp_reset_role); break; case QETH_SBP_ROLE_PRIMARY: setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; cmdlength = sizeof(struct qeth_sbp_set_primary); break; case QETH_SBP_ROLE_SECONDARY: setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; cmdlength = sizeof(struct qeth_sbp_set_secondary); break; default: return -EINVAL; } if (!(card->options.sbp.supported_funcs & setcmd)) return -EOPNOTSUPP; iob = qeth_sbp_build_cmd(card, setcmd, cmdlength); if (!iob) return -ENOMEM; return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb, NULL); } /** * qeth_anset_makerc() - derive "traditional" error from hardware codes. * @card: qeth_card structure pointer, for debug messages. * * Returns negative errno-compatible error indication or 0 on success. */ static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) { int rc; if (pnso_rc == 0) switch (response) { case 0x0001: rc = 0; break; case 0x0004: case 0x0100: case 0x0106: rc = -EOPNOTSUPP; dev_err(&card->gdev->dev, "Setting address notification failed\n"); break; case 0x0107: rc = -EAGAIN; break; default: rc = -EIO; } else rc = -EIO; if (rc) { QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); } return rc; } static void qeth_bridgeport_an_set_cb(void *priv, enum qdio_brinfo_entry_type type, void *entry) { struct qeth_card *card = (struct qeth_card *)priv; struct qdio_brinfo_entry_l2 *l2entry; u8 code; if (type != l2_addr_lnid) { WARN_ON_ONCE(1); return; } l2entry = (struct qdio_brinfo_entry_l2 *)entry; code = IPA_ADDR_CHANGE_CODE_MACADDR; if (l2entry->addr_lnid.lnid < VLAN_N_VID) code |= IPA_ADDR_CHANGE_CODE_VLANID; qeth_bridge_emit_host_event(card, anev_reg_unreg, code, (struct net_if_token *)&l2entry->nit, (struct mac_addr_lnid *)&l2entry->addr_lnid); } /** * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification * @card: qeth_card structure pointer. * @enable: 0 - disable, non-zero - enable notifications * * Returns negative errno-compatible error indication or 0 on success. * * On enable, emits a series of address notifications udev events for all * currently registered hosts. */ int qeth_bridgeport_an_set(struct qeth_card *card, int enable) { int rc; u16 response; struct ccw_device *ddev; struct subchannel_id schid; if (!card) return -EINVAL; if (!card->options.sbp.supported_funcs) return -EOPNOTSUPP; ddev = CARD_DDEV(card); ccw_device_get_schid(ddev, &schid); if (enable) { qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); rc = qdio_pnso_brinfo(schid, 1, &response, qeth_bridgeport_an_set_cb, card); } else rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); return qeth_anset_makerc(card, rc, response); } static bool qeth_bridgeport_is_in_use(struct qeth_card *card) { return (card->options.sbp.role || card->options.sbp.reflect_promisc || card->options.sbp.hostnotification); } /* VNIC Characteristics support */ /* handle VNICC IPA command return codes; convert to error codes */ static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc) { int rc; switch (ipa_rc) { case IPA_RC_SUCCESS: return ipa_rc; case IPA_RC_L2_UNSUPPORTED_CMD: case IPA_RC_NOTSUPP: rc = -EOPNOTSUPP; break; case IPA_RC_VNICC_OOSEQ: rc = -EALREADY; break; case IPA_RC_VNICC_VNICBP: rc = -EBUSY; break; case IPA_RC_L2_ADDR_TABLE_FULL: rc = -ENOSPC; break; case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: rc = -EACCES; break; default: rc = -EIO; } QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); return rc; } /* generic VNICC request call back control */ struct _qeth_l2_vnicc_request_cbctl { u32 sub_cmd; struct { u32 vnic_char; u32 timeout; } param; struct { union{ u32 *sup_cmds; u32 *timeout; }; } result; }; /* generic VNICC request call back */ static int qeth_l2_vnicc_request_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct _qeth_l2_vnicc_request_cbctl *cbctl = (struct _qeth_l2_vnicc_request_cbctl *) reply->param; struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; QETH_CARD_TEXT(card, 2, "vniccrcb"); if (cmd->hdr.return_code) return qeth_l2_vnicc_makerc(card, cmd->hdr.return_code); /* return results to caller */ card->options.vnicc.sup_chars = rep->hdr.sup; card->options.vnicc.cur_chars = rep->hdr.cur; if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS) *cbctl->result.sup_cmds = rep->query_cmds.sup_cmds; if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT) *cbctl->result.timeout = rep->getset_timeout.timeout; return 0; } /* generic VNICC request */ static int qeth_l2_vnicc_request(struct qeth_card *card, struct _qeth_l2_vnicc_request_cbctl *cbctl) { struct qeth_ipacmd_vnicc *req; struct qeth_cmd_buffer *iob; struct qeth_ipa_cmd *cmd; QETH_CARD_TEXT(card, 2, "vniccreq"); /* get new buffer for request */ iob = qeth_get_ipacmd_buffer(card, IPA_CMD_VNICC, 0); if (!iob) return -ENOMEM; /* create header for request */ cmd = __ipa_cmd(iob); req = &cmd->data.vnicc; /* create sub command header for request */ req->sub_hdr.data_length = sizeof(req->sub_hdr); req->sub_hdr.sub_command = cbctl->sub_cmd; /* create sub command specific request fields */ switch (cbctl->sub_cmd) { case IPA_VNICC_QUERY_CHARS: break; case IPA_VNICC_QUERY_CMDS: req->sub_hdr.data_length += sizeof(req->query_cmds); req->query_cmds.vnic_char = cbctl->param.vnic_char; break; case IPA_VNICC_ENABLE: case IPA_VNICC_DISABLE: req->sub_hdr.data_length += sizeof(req->set_char); req->set_char.vnic_char = cbctl->param.vnic_char; break; case IPA_VNICC_SET_TIMEOUT: req->getset_timeout.timeout = cbctl->param.timeout; /* fallthrough */ case IPA_VNICC_GET_TIMEOUT: req->sub_hdr.data_length += sizeof(req->getset_timeout); req->getset_timeout.vnic_char = cbctl->param.vnic_char; break; default: qeth_release_buffer(iob->channel, iob); return -EOPNOTSUPP; } /* send request */ return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, cbctl); } /* VNICC query VNIC characteristics request */ static int qeth_l2_vnicc_query_chars(struct qeth_card *card) { struct _qeth_l2_vnicc_request_cbctl cbctl; /* prepare callback control */ cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS; QETH_CARD_TEXT(card, 2, "vniccqch"); return qeth_l2_vnicc_request(card, &cbctl); } /* VNICC query sub commands request */ static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, u32 *sup_cmds) { struct _qeth_l2_vnicc_request_cbctl cbctl; /* prepare callback control */ cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS; cbctl.param.vnic_char = vnic_char; cbctl.result.sup_cmds = sup_cmds; QETH_CARD_TEXT(card, 2, "vniccqcm"); return qeth_l2_vnicc_request(card, &cbctl); } /* VNICC enable/disable characteristic request */ static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, u32 cmd) { struct _qeth_l2_vnicc_request_cbctl cbctl; /* prepare callback control */ cbctl.sub_cmd = cmd; cbctl.param.vnic_char = vnic_char; QETH_CARD_TEXT(card, 2, "vniccedc"); return qeth_l2_vnicc_request(card, &cbctl); } /* VNICC get/set timeout for characteristic request */ static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc, u32 cmd, u32 *timeout) { struct _qeth_l2_vnicc_request_cbctl cbctl; /* prepare callback control */ cbctl.sub_cmd = cmd; cbctl.param.vnic_char = vnicc; if (cmd == IPA_VNICC_SET_TIMEOUT) cbctl.param.timeout = *timeout; if (cmd == IPA_VNICC_GET_TIMEOUT) cbctl.result.timeout = timeout; QETH_CARD_TEXT(card, 2, "vniccgst"); return qeth_l2_vnicc_request(card, &cbctl); } /* set current VNICC flag state; called from sysfs store function */ int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) { int rc = 0; u32 cmd; QETH_CARD_TEXT(card, 2, "vniccsch"); /* do not change anything if BridgePort is enabled */ if (qeth_bridgeport_is_in_use(card)) return -EBUSY; /* check if characteristic and enable/disable are supported */ if (!(card->options.vnicc.sup_chars & vnicc) || !(card->options.vnicc.set_char_sup & vnicc)) return -EOPNOTSUPP; /* set enable/disable command and store wanted characteristic */ if (state) { cmd = IPA_VNICC_ENABLE; card->options.vnicc.wanted_chars |= vnicc; } else { cmd = IPA_VNICC_DISABLE; card->options.vnicc.wanted_chars &= ~vnicc; } /* do we need to do anything? */ if (card->options.vnicc.cur_chars == card->options.vnicc.wanted_chars) return rc; /* if card is not ready, simply stop here */ if (!qeth_card_hw_is_reachable(card)) { if (state) card->options.vnicc.cur_chars |= vnicc; else card->options.vnicc.cur_chars &= ~vnicc; return rc; } rc = qeth_l2_vnicc_set_char(card, vnicc, cmd); if (rc) card->options.vnicc.wanted_chars = card->options.vnicc.cur_chars; else { /* successful online VNICC change; handle special cases */ if (state && vnicc == QETH_VNICC_RX_BCAST) card->options.vnicc.rx_bcast_enabled = true; if (!state && vnicc == QETH_VNICC_LEARNING) qeth_l2_vnicc_recover_timeout(card, vnicc, &card->options.vnicc.learning_timeout); } return rc; } /* get current VNICC flag state; called from sysfs show function */ int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) { int rc = 0; QETH_CARD_TEXT(card, 2, "vniccgch"); /* do not get anything if BridgePort is enabled */ if (qeth_bridgeport_is_in_use(card)) return -EBUSY; /* check if characteristic is supported */ if (!(card->options.vnicc.sup_chars & vnicc)) return -EOPNOTSUPP; /* if card is ready, query current VNICC state */ if (qeth_card_hw_is_reachable(card)) rc = qeth_l2_vnicc_query_chars(card); *state = (card->options.vnicc.cur_chars & vnicc) ? true : false; return rc; } /* set VNICC timeout; called from sysfs store function. Currently, only learning * supports timeout */ int qeth_l2_vnicc_set_timeout(struct qeth_card *card, u32 timeout) { int rc = 0; QETH_CARD_TEXT(card, 2, "vniccsto"); /* do not change anything if BridgePort is enabled */ if (qeth_bridgeport_is_in_use(card)) return -EBUSY; /* check if characteristic and set_timeout are supported */ if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) return -EOPNOTSUPP; /* do we need to do anything? */ if (card->options.vnicc.learning_timeout == timeout) return rc; /* if card is not ready, simply store the value internally and return */ if (!qeth_card_hw_is_reachable(card)) { card->options.vnicc.learning_timeout = timeout; return rc; } /* send timeout value to card; if successful, store value internally */ rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, IPA_VNICC_SET_TIMEOUT, &timeout); if (!rc) card->options.vnicc.learning_timeout = timeout; return rc; } /* get current VNICC timeout; called from sysfs show function. Currently, only * learning supports timeout */ int qeth_l2_vnicc_get_timeout(struct qeth_card *card, u32 *timeout) { int rc = 0; QETH_CARD_TEXT(card, 2, "vniccgto"); /* do not get anything if BridgePort is enabled */ if (qeth_bridgeport_is_in_use(card)) return -EBUSY; /* check if characteristic and get_timeout are supported */ if (!(card->options.vnicc.sup_chars & QETH_VNICC_LEARNING) || !(card->options.vnicc.getset_timeout_sup & QETH_VNICC_LEARNING)) return -EOPNOTSUPP; /* if card is ready, get timeout. Otherwise, just return stored value */ *timeout = card->options.vnicc.learning_timeout; if (qeth_card_hw_is_reachable(card)) rc = qeth_l2_vnicc_getset_timeout(card, QETH_VNICC_LEARNING, IPA_VNICC_GET_TIMEOUT, timeout); return rc; } /* check if VNICC is currently enabled */ bool qeth_l2_vnicc_is_in_use(struct qeth_card *card) { /* if everything is turned off, VNICC is not active */ if (!card->options.vnicc.cur_chars) return false; /* default values are only OK if rx_bcast was not enabled by user * or the card is offline. */ if (card->options.vnicc.cur_chars == QETH_VNICC_DEFAULT) { if (!card->options.vnicc.rx_bcast_enabled || !qeth_card_hw_is_reachable(card)) return false; } return true; } /* recover user timeout setting */ static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, u32 *timeout) { if (card->options.vnicc.sup_chars & vnicc && card->options.vnicc.getset_timeout_sup & vnicc && !qeth_l2_vnicc_getset_timeout(card, vnicc, IPA_VNICC_SET_TIMEOUT, timeout)) return false; *timeout = QETH_VNICC_DEFAULT_TIMEOUT; return true; } /* recover user characteristic setting */ static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, bool enable) { u32 cmd = enable ? IPA_VNICC_ENABLE : IPA_VNICC_DISABLE; if (card->options.vnicc.sup_chars & vnicc && card->options.vnicc.set_char_sup & vnicc && !qeth_l2_vnicc_set_char(card, vnicc, cmd)) return false; card->options.vnicc.wanted_chars &= ~vnicc; card->options.vnicc.wanted_chars |= QETH_VNICC_DEFAULT & vnicc; return true; } /* (re-)initialize VNICC */ static void qeth_l2_vnicc_init(struct qeth_card *card) { u32 *timeout = &card->options.vnicc.learning_timeout; unsigned int chars_len, i; unsigned long chars_tmp; u32 sup_cmds, vnicc; bool enable, error; QETH_CARD_TEXT(card, 2, "vniccini"); /* reset rx_bcast */ card->options.vnicc.rx_bcast_enabled = 0; /* initial query and storage of VNIC characteristics */ if (qeth_l2_vnicc_query_chars(card)) { if (card->options.vnicc.wanted_chars != QETH_VNICC_DEFAULT || *timeout != QETH_VNICC_DEFAULT_TIMEOUT) dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); /* fail quietly if user didn't change the default config */ card->options.vnicc.sup_chars = 0; card->options.vnicc.cur_chars = 0; card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; return; } /* get supported commands for each supported characteristic */ chars_tmp = card->options.vnicc.sup_chars; chars_len = sizeof(card->options.vnicc.sup_chars) * BITS_PER_BYTE; for_each_set_bit(i, &chars_tmp, chars_len) { vnicc = BIT(i); qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds); if (!(sup_cmds & IPA_VNICC_SET_TIMEOUT) || !(sup_cmds & IPA_VNICC_GET_TIMEOUT)) card->options.vnicc.getset_timeout_sup &= ~vnicc; if (!(sup_cmds & IPA_VNICC_ENABLE) || !(sup_cmds & IPA_VNICC_DISABLE)) card->options.vnicc.set_char_sup &= ~vnicc; } /* enforce assumed default values and recover settings, if changed */ error = qeth_l2_vnicc_recover_timeout(card, QETH_VNICC_LEARNING, timeout); chars_tmp = card->options.vnicc.wanted_chars ^ QETH_VNICC_DEFAULT; chars_tmp |= QETH_VNICC_BRIDGE_INVISIBLE; chars_len = sizeof(card->options.vnicc.wanted_chars) * BITS_PER_BYTE; for_each_set_bit(i, &chars_tmp, chars_len) { vnicc = BIT(i); enable = card->options.vnicc.wanted_chars & vnicc; error |= qeth_l2_vnicc_recover_char(card, vnicc, enable); } if (error) dev_err(&card->gdev->dev, "Configuring the VNIC characteristics failed\n"); } /* configure default values of VNIC characteristics */ static void qeth_l2_vnicc_set_defaults(struct qeth_card *card) { /* characteristics values */ card->options.vnicc.sup_chars = QETH_VNICC_ALL; card->options.vnicc.cur_chars = QETH_VNICC_DEFAULT; card->options.vnicc.learning_timeout = QETH_VNICC_DEFAULT_TIMEOUT; /* supported commands */ card->options.vnicc.set_char_sup = QETH_VNICC_ALL; card->options.vnicc.getset_timeout_sup = QETH_VNICC_LEARNING; /* settings wanted by users */ card->options.vnicc.wanted_chars = QETH_VNICC_DEFAULT; } module_init(qeth_l2_init); module_exit(qeth_l2_exit); MODULE_AUTHOR("Frank Blaschka "); MODULE_DESCRIPTION("qeth layer 2 discipline"); MODULE_LICENSE("GPL");