| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Eugene Crosser | 2898 | 30.22% | 10 | 6.25% |
| Julian Wiedmann | 2833 | 29.54% | 95 | 59.38% |
| Hans Wippel | 1756 | 18.31% | 4 | 2.50% |
| Frank Blaschka | 1490 | 15.54% | 10 | 6.25% |
| Lakhvich Dmitriy | 225 | 2.35% | 2 | 1.25% |
| Alexandra Winter | 99 | 1.03% | 6 | 3.75% |
| Thomas Richter | 83 | 0.87% | 4 | 2.50% |
| Kittipon Meesompop | 56 | 0.58% | 3 | 1.88% |
| Ursula Braun-Krahl | 49 | 0.51% | 10 | 6.25% |
| Carsten Otte | 43 | 0.45% | 1 | 0.62% |
| Jiri Pirko | 13 | 0.14% | 3 | 1.88% |
| Heiko Carstens | 11 | 0.11% | 2 | 1.25% |
| Klaus-Dieter Wacker | 11 | 0.11% | 1 | 0.62% |
| Patrick McHardy | 9 | 0.09% | 2 | 1.25% |
| Sebastian Ott | 4 | 0.04% | 1 | 0.62% |
| Petr Machata | 2 | 0.02% | 1 | 0.62% |
| Stefan Raspl | 2 | 0.02% | 1 | 0.62% |
| Tejun Heo | 2 | 0.02% | 1 | 0.62% |
| Vasily Gorbik | 2 | 0.02% | 1 | 0.62% |
| Peter Senna Tschudin | 1 | 0.01% | 1 | 0.62% |
| Greg Kroah-Hartman | 1 | 0.01% | 1 | 0.62% |
| Total | 9590 | 160 |
// SPDX-License-Identifier: GPL-2.0 /* * Copyright IBM Corp. 2007, 2009 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, * Frank Pavlic <fpavlic@de.ibm.com>, * Thomas Spatzier <tspat@de.ibm.com>, * Frank Blaschka <frank.blaschka@de.ibm.com> */ #define KMSG_COMPONENT "qeth" #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/string.h> #include <linux/errno.h> #include <linux/kernel.h> #include <linux/slab.h> #include <linux/etherdevice.h> #include <linux/list.h> #include <linux/hash.h> #include <linux/hashtable.h> #include <asm/setup.h> #include "qeth_core.h" #include "qeth_l2.h" 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 = -EADDRINUSE; break; case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: rc = -EADDRNOTAVAIL; 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_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4, IPA_DATA_SIZEOF(setdelmac)); 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 -EADDRINUSE: dev_warn(&card->gdev->dev, "MAC address %pM already exists\n", mac); break; case -EADDRNOTAVAIL: 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 == -EADDRINUSE) 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, unsigned int data_len) { int cast_type = qeth_get_ether_cast_type(skb); 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); } /* 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_ipa_alloc_cmd(card, ipacmd, QETH_PROT_IPV4, IPA_DATA_SIZEOF(setdelvlan)); 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_CARD_TEXT(card, 2, "stopcard"); 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); qeth_drain_output_queues(card); cancel_delayed_work_sync(&card->buffer_reclaim_work); card->state = CARD_STATE_DOWN; } qeth_qdio_clear_card(card, 0); qeth_clear_working_pool_list(card); flush_workqueue(card->event_wq); card->info.promisc_mode = 0; } static int qeth_l2_request_initial_mac(struct qeth_card *card) { int rc = 0; QETH_CARD_TEXT(card, 2, "l2reqmac"); 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_CARD_TEXT_(card, 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_CARD_TEXT_(card, 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_CARD_HEX(card, 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.dev_addr_is_registered = 1; else card->info.dev_addr_is_registered = 0; } static int qeth_l2_validate_addr(struct net_device *dev) { struct qeth_card *card = dev->ml_priv; if (card->info.dev_addr_is_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.dev_addr_is_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.dev_addr_is_registered) qeth_l2_remove_mac(card, old_addr); card->info.dev_addr_is_registered = 1; return 0; } static void qeth_l2_promisc_to_bridge(struct qeth_card *card, bool enable) { int role; int rc; QETH_CARD_TEXT(card, 3, "pmisc2br"); if (enable) { 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_CARD_TEXT_(card, 2, "bpm%c%04x", enable ? '+' : '-', rc); if (!rc) { card->options.sbp.role = role; card->info.promisc_mode = enable; } } static void qeth_l2_set_promisc_mode(struct qeth_card *card) { bool enable = card->dev->flags & IFF_PROMISC; if (card->info.promisc_mode == enable) return; if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) { qeth_setadp_promisc_mode(card, enable); } else { mutex_lock(&card->sbp_lock); if (card->options.sbp.reflect_promisc) qeth_l2_promisc_to_bridge(card, enable); mutex_unlock(&card->sbp_lock); } } /* 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; } } qeth_l2_set_promisc_mode(card); } static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb, struct qeth_qdio_out_q *queue) { gfp_t gfp = GFP_ATOMIC | (skb_pfmemalloc(skb) ? __GFP_MEMALLOC : 0); 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); 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 rc; if (!skb_is_gso(skb)) qdisc_skb_cb(skb)->pkt_len = skb->len; 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_l2_fill_header); if (!rc) 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 IS_VM_NIC(card) ? netdev_pick_tx(dev, skb, sb_dev) : 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; if (IS_OSN(card)) dev_notice(&gdev->dev, "OSN support will be dropped in 2021\n"); qeth_l2_vnicc_set_defaults(card); mutex_init(&card->sbp_lock); 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_set_offline(card, false); cancel_work_sync(&card->close_dev_work); if (card->dev->reg_state == NETREG_REGISTERED) 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) { int rc; if (IS_OSN(card)) { card->dev->netdev_ops = &qeth_osn_netdev_ops; card->dev->flags |= IFF_NOARP; goto add_napi; } rc = qeth_setup_netdev(card); if (rc) return rc; 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); return register_netdev(card->dev); } 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 void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card) { if (!card->options.sbp.reflect_promisc && card->options.sbp.role != QETH_SBP_ROLE_NONE) { /* Conditional to avoid spurious error messages */ qeth_bridgeport_setrole(card, card->options.sbp.role); /* Let the callback function refresh the stored role value. */ qeth_bridgeport_query_ports(card, &card->options.sbp.role, NULL); } if (card->options.sbp.hostnotification) { if (qeth_bridgeport_an_set(card, 1)) card->options.sbp.hostnotification = 0; } else { qeth_bridgeport_an_set(card, 0); } } static int qeth_l2_set_online(struct qeth_card *card) { struct ccwgroup_device *gdev = card->gdev; struct net_device *dev = card->dev; int rc = 0; bool carrier_ok; rc = qeth_core_hardsetup_card(card, &carrier_ok); if (rc) { QETH_CARD_TEXT_(card, 2, "2err%04x", rc); rc = -ENODEV; goto out_remove; } mutex_lock(&card->sbp_lock); qeth_bridgeport_query_support(card); if (card->options.sbp.supported_funcs) { qeth_l2_setup_bridgeport_attrs(card); dev_info(&card->gdev->dev, "The device represents a Bridge Capable Port\n"); } mutex_unlock(&card->sbp_lock); 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_print_status_message(card); /* softsetup */ QETH_CARD_TEXT(card, 2, "softsetp"); card->state = CARD_STATE_SOFTSETUP; qeth_set_allowed_threads(card, 0xffffffff, 0); if (dev->reg_state != NETREG_REGISTERED) { rc = qeth_l2_setup_netdev(card); if (rc) goto out_remove; if (carrier_ok) netif_carrier_on(dev); } 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); return 0; out_remove: qeth_l2_stop_card(card); qeth_stop_channel(&card->data); qeth_stop_channel(&card->write); qeth_stop_channel(&card->read); qdio_free(CARD_DDEV(card)); return rc; } static void qeth_l2_set_offline(struct qeth_card *card) { qeth_l2_stop_card(card); } 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"); } /* 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, .setup = qeth_l2_probe_device, .remove = qeth_l2_remove_device, .set_online = qeth_l2_set_online, .set_offline = qeth_l2_set_offline, .do_ioctl = NULL, .control_event_handler = qeth_l2_control_event, }; EXPORT_SYMBOL_GPL(qeth_l2_discipline); #ifdef CONFIG_QETH_OSN static void qeth_osn_assist_cb(struct qeth_card *card, struct qeth_cmd_buffer *iob, unsigned int data_length) { qeth_notify_cmd(iob, 0); qeth_put_cmd(iob); } int qeth_osn_assist(struct net_device *dev, void *data, int data_len) { struct qeth_cmd_buffer *iob; struct qeth_card *card; if (data_len < 0) return -EINVAL; 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_alloc_cmd(&card->write, IPA_PDU_HEADER_SIZE + data_len, 1, QETH_IPA_TIMEOUT); if (!iob) return -ENOMEM; qeth_prepare_ipa_cmd(card, iob, (u16) data_len, NULL); memcpy(__ipa_cmd(iob), data, data_len); iob->callback = qeth_osn_assist_cb; return qeth_send_ipa_cmd(card, iob, NULL, NULL); } 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); #endif /* 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->sbp_lock); data->card->options.sbp.role = entry->role; mutex_unlock(&data->card->sbp_lock); 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" : "<INVALID>"); 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" : "<INVALID>"); 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->sbp_lock); data->card->options.sbp.hostnotification = 0; mutex_unlock(&data->card->sbp_lock); 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 data_length) { enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD : IPA_CMD_SETBRIDGEPORT_OSA; struct qeth_ipacmd_sbp_hdr *hdr; struct qeth_cmd_buffer *iob; iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE, data_length + offsetof(struct qeth_ipacmd_setbridgeport, data)); if (!iob) return iob; hdr = &__ipa_cmd(iob)->data.sbp.hdr; hdr->cmdlength = sizeof(*hdr) + data_length; hdr->command_code = sbp_cmd; hdr->used_total = 1; 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, SBP_DATA_SIZEOF(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) { struct qeth_cmd_buffer *iob; enum qeth_ipa_sbp_cmd setcmd; unsigned int cmdlength = 0; QETH_CARD_TEXT(card, 2, "brsetrol"); switch (role) { case QETH_SBP_ROLE_NONE: setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE; break; case QETH_SBP_ROLE_PRIMARY: setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT; cmdlength = SBP_DATA_SIZEOF(set_primary); break; case QETH_SBP_ROLE_SECONDARY: setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT; 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->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 */ static int qeth_l2_vnicc_request_cb(struct qeth_card *card, struct qeth_reply *reply, unsigned long data) { struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc; u32 sub_cmd = cmd->data.vnicc.hdr.sub_command; 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->vnicc_cmds.supported; card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled; if (sub_cmd == IPA_VNICC_QUERY_CMDS) *(u32 *)reply->param = rep->data.query_cmds.sup_cmds; else if (sub_cmd == IPA_VNICC_GET_TIMEOUT) *(u32 *)reply->param = rep->data.getset_timeout.timeout; return 0; } static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card, u32 vnicc_cmd, unsigned int data_length) { struct qeth_ipacmd_vnicc_hdr *hdr; struct qeth_cmd_buffer *iob; iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE, data_length + offsetof(struct qeth_ipacmd_vnicc, data)); if (!iob) return NULL; hdr = &__ipa_cmd(iob)->data.vnicc.hdr; hdr->data_length = sizeof(*hdr) + data_length; hdr->sub_command = vnicc_cmd; return iob; } /* VNICC query VNIC characteristics request */ static int qeth_l2_vnicc_query_chars(struct qeth_card *card) { struct qeth_cmd_buffer *iob; QETH_CARD_TEXT(card, 2, "vniccqch"); iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0); if (!iob) return -ENOMEM; return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); } /* VNICC query sub commands request */ static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char, u32 *sup_cmds) { struct qeth_cmd_buffer *iob; QETH_CARD_TEXT(card, 2, "vniccqcm"); iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CMDS, VNICC_DATA_SIZEOF(query_cmds)); if (!iob) return -ENOMEM; __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char; return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, sup_cmds); } /* VNICC enable/disable characteristic request */ static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char, u32 cmd) { struct qeth_cmd_buffer *iob; QETH_CARD_TEXT(card, 2, "vniccedc"); iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char)); if (!iob) return -ENOMEM; __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char; return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); } /* 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_vnicc_getset_timeout *getset_timeout; struct qeth_cmd_buffer *iob; QETH_CARD_TEXT(card, 2, "vniccgst"); iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(getset_timeout)); if (!iob) return -ENOMEM; getset_timeout = &__ipa_cmd(iob)->data.vnicc.data.getset_timeout; getset_timeout->vnic_char = vnicc; if (cmd == IPA_VNICC_SET_TIMEOUT) getset_timeout->timeout = *timeout; return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, timeout); } /* 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"); /* check if characteristic and enable/disable are supported */ if (!(card->options.vnicc.sup_chars & vnicc) || !(card->options.vnicc.set_char_sup & vnicc)) return -EOPNOTSUPP; if (qeth_bridgeport_is_in_use(card)) return -EBUSY; /* 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"); /* check if characteristic is supported */ if (!(card->options.vnicc.sup_chars & vnicc)) return -EOPNOTSUPP; if (qeth_bridgeport_is_in_use(card)) return -EBUSY; /* 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"); /* 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; if (qeth_bridgeport_is_in_use(card)) return -EBUSY; /* 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"); /* 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 (qeth_bridgeport_is_in_use(card)) return -EBUSY; /* 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 (!card->options.vnicc.sup_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; bool enable, error = false; unsigned int chars_len, i; unsigned long chars_tmp; u32 sup_cmds, vnicc; 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); if (qeth_l2_vnicc_query_cmds(card, vnicc, &sup_cmds)) { sup_cmds = 0; error = true; } if ((sup_cmds & IPA_VNICC_SET_TIMEOUT) && (sup_cmds & IPA_VNICC_GET_TIMEOUT)) card->options.vnicc.getset_timeout_sup |= vnicc; else 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; else 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); /* Change chars, if necessary */ chars_tmp = card->options.vnicc.wanted_chars ^ card->options.vnicc.cur_chars; 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 <frank.blaschka@de.ibm.com>"); MODULE_DESCRIPTION("qeth layer 2 discipline"); MODULE_LICENSE("GPL");
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