diff options
Diffstat (limited to 'drivers/s390/net/qeth_l2_main.c')
| -rw-r--r-- | drivers/s390/net/qeth_l2_main.c | 3122 |
1 files changed, 2120 insertions, 1002 deletions
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index ec8ccdae7aba..7498a83b1f06 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright IBM Corp. 2007, 2009 * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, @@ -6,9 +7,9 @@ * Frank Blaschka <frank.blaschka@de.ibm.com> */ -#define KMSG_COMPONENT "qeth" -#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt +#define pr_fmt(fmt) "qeth: " fmt +#include <linux/export.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/string.h> @@ -16,231 +17,161 @@ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/etherdevice.h> -#include <linux/mii.h> -#include <linux/ip.h> +#include <linux/if_bridge.h> #include <linux/list.h> - +#include <linux/hash.h> +#include <linux/hashtable.h> +#include <net/switchdev.h> +#include <asm/machine.h> +#include <asm/chsc.h> +#include <asm/css_chars.h> +#include <asm/setup.h> #include "qeth_core.h" +#include "qeth_l2.h" -static int qeth_l2_set_offline(struct ccwgroup_device *); -static int qeth_l2_stop(struct net_device *); -static int qeth_l2_send_delmac(struct qeth_card *, __u8 *); -static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *, - enum qeth_ipa_cmds, - int (*reply_cb) (struct qeth_card *, - struct qeth_reply*, - unsigned long)); -static void qeth_l2_set_multicast_list(struct net_device *); -static int qeth_l2_recover(void *); - -static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +static int qeth_l2_setdelmac_makerc(struct qeth_card *card, u16 retcode) { - struct qeth_card *card = dev->ml_priv; - struct mii_ioctl_data *mii_data; - int rc = 0; - - if (!card) - return -ENODEV; - - if ((card->state != CARD_STATE_UP) && - (card->state != CARD_STATE_SOFTSETUP)) - return -ENODEV; - - if (card->info.type == QETH_CARD_TYPE_OSN) - return -EPERM; + int rc; - switch (cmd) { - case SIOC_QETH_ADP_SET_SNMP_CONTROL: - rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data); + if (retcode) + QETH_CARD_TEXT_(card, 2, "err%04x", retcode); + switch (retcode) { + case IPA_RC_SUCCESS: + rc = 0; break; - case SIOC_QETH_GET_CARD_TYPE: - if ((card->info.type == QETH_CARD_TYPE_OSD || - card->info.type == QETH_CARD_TYPE_OSM || - card->info.type == QETH_CARD_TYPE_OSX) && - !card->info.guestlan) - return 1; - return 0; + case IPA_RC_L2_UNSUPPORTED_CMD: + rc = -EOPNOTSUPP; break; - case SIOCGMIIPHY: - mii_data = if_mii(rq); - mii_data->phy_id = 0; + case IPA_RC_L2_ADDR_TABLE_FULL: + rc = -ENOSPC; break; - case SIOCGMIIREG: - mii_data = if_mii(rq); - if (mii_data->phy_id != 0) - rc = -EINVAL; - else - mii_data->val_out = qeth_mdio_read(dev, - mii_data->phy_id, mii_data->reg_num); + 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 SIOC_QETH_QUERY_OAT: - rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data); + case IPA_RC_L2_MAC_NOT_FOUND: + rc = -ENOENT; break; default: - rc = -EOPNOTSUPP; + rc = -EIO; + break; } - if (rc) - QETH_CARD_TEXT_(card, 2, "ioce%d", rc); return rc; } -static int qeth_l2_verify_dev(struct net_device *dev) +static int qeth_l2_send_setdelmac_cb(struct qeth_card *card, + struct qeth_reply *reply, + unsigned long data) { - struct qeth_card *card; - unsigned long flags; - int rc = 0; - - read_lock_irqsave(&qeth_core_card_list.rwlock, flags); - list_for_each_entry(card, &qeth_core_card_list.list, list) { - if (card->dev == dev) { - rc = QETH_REAL_CARD; - break; - } - } - read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); + struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; - return rc; + return qeth_l2_setdelmac_makerc(card, cmd->hdr.return_code); } -static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no) -{ - struct qeth_card *card; - struct net_device *ndev; - __u16 temp_dev_no; - unsigned long flags; - struct ccw_dev_id read_devid; - - ndev = NULL; - memcpy(&temp_dev_no, read_dev_no, 2); - read_lock_irqsave(&qeth_core_card_list.rwlock, flags); - list_for_each_entry(card, &qeth_core_card_list.list, list) { - ccw_device_get_id(CARD_RDEV(card), &read_devid); - if (read_devid.devno == temp_dev_no) { - ndev = card->dev; - break; - } - } - read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); - return ndev; -} - -static int qeth_l2_send_setgroupmac_cb(struct qeth_card *card, - struct qeth_reply *reply, - unsigned long data) +static int qeth_l2_send_setdelmac(struct qeth_card *card, const __u8 *mac, + enum qeth_ipa_cmds ipacmd) { struct qeth_ipa_cmd *cmd; - __u8 *mac; - - QETH_CARD_TEXT(card, 2, "L2Sgmacb"); - cmd = (struct qeth_ipa_cmd *) data; - mac = &cmd->data.setdelmac.mac[0]; - /* MAC already registered, needed in couple/uncouple case */ - if (cmd->hdr.return_code == IPA_RC_L2_DUP_MAC) { - QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s \n", - mac, QETH_CARD_IFNAME(card)); - cmd->hdr.return_code = 0; - } - if (cmd->hdr.return_code) - QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %x\n", - mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code); - return 0; -} + struct qeth_cmd_buffer *iob; -static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac) -{ - QETH_CARD_TEXT(card, 2, "L2Sgmac"); - return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETGMAC, - qeth_l2_send_setgroupmac_cb); + 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_delgroupmac_cb(struct qeth_card *card, - struct qeth_reply *reply, - unsigned long data) +static int qeth_l2_send_setmac(struct qeth_card *card, const __u8 *mac) { - struct qeth_ipa_cmd *cmd; - __u8 *mac; + int rc; - QETH_CARD_TEXT(card, 2, "L2Dgmacb"); - cmd = (struct qeth_ipa_cmd *) data; - mac = &cmd->data.setdelmac.mac[0]; - if (cmd->hdr.return_code) - QETH_DBF_MESSAGE(2, "Could not delete group MAC %pM on %s: %x\n", - mac, QETH_CARD_IFNAME(card), cmd->hdr.return_code); - return 0; + 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_send_delgroupmac(struct qeth_card *card, __u8 *mac) +static int qeth_l2_write_mac(struct qeth_card *card, u8 *mac) { - QETH_CARD_TEXT(card, 2, "L2Dgmac"); - return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELGMAC, - qeth_l2_send_delgroupmac_cb); + 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 address %012llx is already registered on device %x\n", + ether_addr_to_u64(mac), CARD_DEVID(card)); + else if (rc) + QETH_DBF_MESSAGE(2, "Failed to register MAC address %012llx on device %x: %d\n", + ether_addr_to_u64(mac), CARD_DEVID(card), rc); + return rc; } -static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac) +static int qeth_l2_remove_mac(struct qeth_card *card, u8 *mac) { - struct qeth_mc_mac *mc; + enum qeth_ipa_cmds cmd = is_multicast_ether_addr(mac) ? + IPA_CMD_DELGMAC : IPA_CMD_DELVMAC; int rc; - mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC); - - if (!mc) - return; - - memcpy(mc->mc_addr, mac, OSA_ADDR_LEN); - mc->mc_addrlen = OSA_ADDR_LEN; - mc->is_vmac = vmac; - - if (vmac) { - rc = qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC, - NULL); - } else { - rc = qeth_l2_send_setgroupmac(card, mac); - } - - if (!rc) - list_add_tail(&mc->list, &card->mc_list); - else - kfree(mc); + QETH_CARD_TEXT(card, 2, "L2Rmac"); + rc = qeth_l2_send_setdelmac(card, mac, cmd); + if (rc) + QETH_DBF_MESSAGE(2, "Failed to delete MAC address %012llx on device %x: %d\n", + ether_addr_to_u64(mac), CARD_DEVID(card), rc); + return rc; } -static void qeth_l2_del_all_mc(struct qeth_card *card, int del) +static void qeth_l2_drain_rx_mode_cache(struct qeth_card *card) { - struct qeth_mc_mac *mc, *tmp; + struct qeth_mac *mac; + struct hlist_node *tmp; + int i; - spin_lock_bh(&card->mclock); - list_for_each_entry_safe(mc, tmp, &card->mc_list, list) { - if (del) { - if (mc->is_vmac) - qeth_l2_send_setdelmac(card, mc->mc_addr, - IPA_CMD_DELVMAC, NULL); - else - qeth_l2_send_delgroupmac(card, mc->mc_addr); - } - list_del(&mc->list); - kfree(mc); + hash_for_each_safe(card->rx_mode_addrs, i, tmp, mac, hnode) { + hash_del(&mac->hnode); + kfree(mac); } - spin_unlock_bh(&card->mclock); } -static inline int qeth_l2_get_cast_type(struct qeth_card *card, - struct sk_buff *skb) +static void qeth_l2_fill_header(struct qeth_qdio_out_q *queue, + struct qeth_hdr *hdr, struct sk_buff *skb, + __be16 proto, unsigned int data_len) { - if (card->info.type == QETH_CARD_TYPE_OSN) - return RTN_UNSPEC; - if (is_broadcast_ether_addr(skb->data)) - return RTN_BROADCAST; - if (is_multicast_ether_addr(skb->data)) - return RTN_MULTICAST; - return RTN_UNSPEC; -} + int cast_type = qeth_get_ether_cast_type(skb); + struct vlan_ethhdr *veth = vlan_eth_hdr(skb); -static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, - struct sk_buff *skb, int ipv, int cast_type) -{ - struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb); + hdr->hdr.l2.pkt_length = data_len; - memset(hdr, 0, sizeof(struct qeth_hdr)); - hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2; + 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], proto); + } /* set byte byte 3 to casting flags */ if (cast_type == RTN_MULTICAST) @@ -250,1102 +181,2289 @@ static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr, else hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST; - hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE; /* VSWITCH relies on the VLAN * information to be present in * the QDIO header */ - if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) { + if (veth->h_vlan_proto == 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_reply *reply, + unsigned long data) { - struct qeth_ipa_cmd *cmd; + struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; QETH_CARD_TEXT(card, 2, "L2sdvcb"); - cmd = (struct qeth_ipa_cmd *) data; if (cmd->hdr.return_code) { - QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. " - "Continuing\n", cmd->data.setdelvlan.vlan_id, - QETH_CARD_IFNAME(card), 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); - QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); } - return 0; + 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) + 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); - cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); + 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 void qeth_l2_process_vlans(struct qeth_card *card) -{ - struct qeth_vlan_vid *id; - QETH_CARD_TEXT(card, 3, "L2prcvln"); - spin_lock_bh(&card->vlanlock); - list_for_each_entry(id, &card->vid_list, list) { - qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN); - } - spin_unlock_bh(&card->vlanlock); + 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; - struct qeth_vlan_vid *id; QETH_CARD_TEXT_(card, 4, "aid:%d", vid); if (!vid) return 0; - if (card->info.type == QETH_CARD_TYPE_OSM) { - QETH_CARD_TEXT(card, 3, "aidOSM"); - return 0; - } - if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { - QETH_CARD_TEXT(card, 3, "aidREC"); - return 0; - } - id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC); - if (id) { - id->vid = vid; - qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN); - spin_lock_bh(&card->vlanlock); - list_add_tail(&id->list, &card->vid_list); - spin_unlock_bh(&card->vlanlock); - } else { - return -ENOMEM; - } - 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_vlan_vid *id, *tmpid = NULL; struct qeth_card *card = dev->ml_priv; QETH_CARD_TEXT_(card, 4, "kid:%d", vid); - if (card->info.type == QETH_CARD_TYPE_OSM) { - QETH_CARD_TEXT(card, 3, "kidOSM"); - return 0; - } - if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { - QETH_CARD_TEXT(card, 3, "kidREC"); + if (!vid) return 0; + + return qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); +} + +static void qeth_l2_set_pnso_mode(struct qeth_card *card, + enum qeth_pnso_mode mode) +{ + spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card))); + WRITE_ONCE(card->info.pnso_mode, mode); + spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card))); + + if (mode == QETH_PNSO_NONE) + drain_workqueue(card->event_wq); +} + +static void qeth_l2_dev2br_fdb_flush(struct qeth_card *card) +{ + struct switchdev_notifier_fdb_info info = {}; + + QETH_CARD_TEXT(card, 2, "fdbflush"); + + info.addr = NULL; + /* flush all VLANs: */ + info.vid = 0; + info.added_by_user = false; + info.offloaded = true; + + call_switchdev_notifiers(SWITCHDEV_FDB_FLUSH_TO_BRIDGE, + card->dev, &info.info, NULL); +} + +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: */ } - spin_lock_bh(&card->vlanlock); - list_for_each_entry(id, &card->vid_list, list) { - if (id->vid == vid) { - list_del(&id->list); - tmpid = id; - break; - } - } - spin_unlock_bh(&card->vlanlock); - if (tmpid) { - qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN); - kfree(tmpid); - } - qeth_l2_set_multicast_list(card->dev); + + 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, but 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 int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode) +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 (!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_DBF_TEXT(SETUP , 2, "stopcard"); - QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); + QETH_CARD_TEXT(card, 3, "setmac"); - qeth_set_allowed_threads(card, 0, 1); - if (card->read.state == CH_STATE_UP && - card->write.state == CH_STATE_UP && - (card->state == CARD_STATE_UP)) { - if (recovery_mode && - card->info.type != QETH_CARD_TYPE_OSN) { - qeth_l2_stop(card->dev); - } else { - rtnl_lock(); - dev_close(card->dev); - rtnl_unlock(); - } - card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; - card->state = CARD_STATE_SOFTSETUP; - } - if (card->state == CARD_STATE_SOFTSETUP) { - qeth_l2_del_all_mc(card, 0); - qeth_clear_ipacmd_list(card); - card->state = CARD_STATE_HARDSETUP; + if (IS_OSM(card) || IS_OSX(card)) { + QETH_CARD_TEXT(card, 3, "setmcTYP"); + return -EOPNOTSUPP; } - if (card->state == CARD_STATE_HARDSETUP) { - qeth_qdio_clear_card(card, 0); - qeth_clear_qdio_buffers(card); - qeth_clear_working_pool_list(card); - card->state = CARD_STATE_DOWN; + 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); + eth_hw_addr_set(dev, 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; } - if (card->state == CARD_STATE_DOWN) { - qeth_clear_cmd_buffers(&card->read); - qeth_clear_cmd_buffers(&card->write); +} + +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); } - return rc; } -static int qeth_l2_process_inbound_buffer(struct qeth_card *card, - int budget, int *done) +/* 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) { - int work_done = 0; - struct sk_buff *skb; - struct qeth_hdr *hdr; - unsigned int len; + u32 mac_hash = get_unaligned((u32 *)(&ha->addr[2])); + struct qeth_mac *mac; - *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; + hash_for_each_possible(card->rx_mode_addrs, mac, hnode, mac_hash) { + if (ether_addr_equal_64bits(ha->addr, mac->mac_addr)) { + mac->disp_flag = QETH_DISP_ADDR_DO_NOTHING; + return; } - skb->dev = card->dev; - switch (hdr->hdr.l2.id) { - case QETH_HEADER_TYPE_LAYER2: - skb->pkt_type = PACKET_HOST; - skb->protocol = eth_type_trans(skb, skb->dev); - skb->ip_summed = CHECKSUM_NONE; - if (skb->protocol == htons(ETH_P_802_2)) - *((__u32 *)skb->cb) = ++card->seqno.pkt_seqno; - len = skb->len; - netif_receive_skb(skb); + } + + 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->rx_mode_addrs, &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->rx_mode_addrs, 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_HEADER_TYPE_OSN: - if (card->info.type == QETH_CARD_TYPE_OSN) { - 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); + case QETH_DISP_ADDR_ADD: + rc = qeth_l2_write_mac(card, mac->mac_addr); + if (rc) { + hash_del(&mac->hnode); + kfree(mac); break; } - /* else unknown */ + fallthrough; default: - dev_kfree_skb_any(skb); - QETH_CARD_TEXT(card, 3, "inbunkno"); - QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN); - continue; + /* for next call to set_rx_mode(): */ + mac->disp_flag = QETH_DISP_ADDR_DELETE; } - work_done++; - budget--; - card->stats.rx_packets++; - card->stats.rx_bytes += len; } - return work_done; + + qeth_l2_set_promisc_mode(card); +} + +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]; + + rc = qeth_xmit(card, skb, queue, vlan_get_protocol(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 int qeth_l2_poll(struct napi_struct *napi, int budget) +static u16 qeth_l2_iqd_select_queue(struct net_device *dev, struct sk_buff *skb, + struct net_device *sb_dev) { - struct qeth_card *card = container_of(napi, struct qeth_card, napi); - int work_done = 0; - struct qeth_qdio_buffer *buffer; - int done; - int new_budget = budget; + return qeth_iqd_select_queue(dev, skb, qeth_get_ether_cast_type(skb), + sb_dev); +} - if (card->options.performance_stats) { - card->perf_stats.inbound_cnt++; - card->perf_stats.inbound_start_time = qeth_get_micros(); - } +static void qeth_l2_set_rx_mode(struct net_device *dev) +{ + struct qeth_card *card = dev->ml_priv; - while (1) { - if (!card->rx.b_count) { - card->rx.qdio_err = 0; - card->rx.b_count = qdio_get_next_buffers( - card->data.ccwdev, 0, &card->rx.b_index, - &card->rx.qdio_err); - if (card->rx.b_count <= 0) { - card->rx.b_count = 0; - break; - } - card->rx.b_element = - &card->qdio.in_q->bufs[card->rx.b_index] - .buffer->element[0]; - card->rx.e_offset = 0; + schedule_work(&card->rx_mode_work); +} + +/** + * qeth_l2_pnso() - perform network subchannel operation + * @card: qeth_card structure pointer + * @oc: Operation Code + * @cnc: Boolean Change-Notification Control + * @cb: Callback function will be executed for each element + * of the address list + * @priv: Pointer to pass to the callback function. + * + * Collects network information in a network address list and calls the + * callback function for every entry in the list. If "change-notification- + * control" is set, further changes in the address list will be reported + * via the IPA command. + */ +static int qeth_l2_pnso(struct qeth_card *card, u8 oc, int cnc, + void (*cb)(void *priv, struct chsc_pnso_naid_l2 *entry), + void *priv) +{ + struct ccw_device *ddev = CARD_DDEV(card); + struct chsc_pnso_area *rr; + u32 prev_instance = 0; + int isfirstblock = 1; + int i, size, elems; + int rc; + + rr = (struct chsc_pnso_area *)get_zeroed_page(GFP_KERNEL); + if (rr == NULL) + return -ENOMEM; + do { + QETH_CARD_TEXT(card, 2, "PNSO"); + /* on the first iteration, naihdr.resume_token will be zero */ + rc = ccw_device_pnso(ddev, rr, oc, rr->naihdr.resume_token, + cnc); + if (rc) + continue; + if (cb == NULL) + continue; + + size = rr->naihdr.naids; + if (size != sizeof(struct chsc_pnso_naid_l2)) { + WARN_ON_ONCE(1); + continue; } - while (card->rx.b_count) { - buffer = &card->qdio.in_q->bufs[card->rx.b_index]; - if (!(card->rx.qdio_err && - qeth_check_qdio_errors(card, buffer->buffer, - card->rx.qdio_err, "qinerr"))) - work_done += qeth_l2_process_inbound_buffer( - card, new_budget, &done); - else - done = 1; - - if (done) { - if (card->options.performance_stats) - card->perf_stats.bufs_rec++; - qeth_put_buffer_pool_entry(card, - buffer->pool_entry); - qeth_queue_input_buffer(card, card->rx.b_index); - card->rx.b_count--; - if (card->rx.b_count) { - card->rx.b_index = - (card->rx.b_index + 1) % - QDIO_MAX_BUFFERS_PER_Q; - card->rx.b_element = - &card->qdio.in_q - ->bufs[card->rx.b_index] - .buffer->element[0]; - card->rx.e_offset = 0; - } - } + elems = (rr->response.length - sizeof(struct chsc_header) - + sizeof(struct chsc_pnso_naihdr)) / size; - if (work_done >= budget) - goto out; - else - new_budget = budget - work_done; + if (!isfirstblock && (rr->naihdr.instance != prev_instance)) { + /* Inform the caller that they need to scrap */ + /* the data that was already reported via cb */ + rc = -EAGAIN; + break; } + isfirstblock = 0; + prev_instance = rr->naihdr.instance; + for (i = 0; i < elems; i++) + (*cb)(priv, &rr->entries[i]); + } while ((rc == -EBUSY) || (!rc && /* list stored */ + /* resume token is non-zero => list incomplete */ + (rr->naihdr.resume_token.t1 || rr->naihdr.resume_token.t2))); + + if (rc) + QETH_CARD_TEXT_(card, 2, "PNrp%04x", rr->response.code); + + free_page((unsigned long)rr); + return rc; +} + +static bool qeth_is_my_net_if_token(struct qeth_card *card, + struct net_if_token *token) +{ + return ((card->info.ddev_devno == token->devnum) && + (card->info.cssid == token->cssid) && + (card->info.iid == token->iid) && + (card->info.ssid == token->ssid) && + (card->info.chpid == token->chpid) && + (card->info.chid == token->chid)); +} + +/** + * qeth_l2_dev2br_fdb_notify() - update fdb of master bridge + * @card: qeth_card structure pointer + * @code: event bitmask: high order bit 0x80 set to + * 1 - removal of an object + * 0 - addition of an object + * Object type(s): + * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC + * @token: "network token" structure identifying 'physical' location + * of the target + * @addr_lnid: structure with MAC address and VLAN ID of the target + */ +static void qeth_l2_dev2br_fdb_notify(struct qeth_card *card, u8 code, + struct net_if_token *token, + struct mac_addr_lnid *addr_lnid) +{ + struct switchdev_notifier_fdb_info info = {}; + u8 ntfy_mac[ETH_ALEN]; + + ether_addr_copy(ntfy_mac, addr_lnid->mac); + /* Ignore VLAN only changes */ + if (!(code & IPA_ADDR_CHANGE_CODE_MACADDR)) + return; + /* Ignore mcast entries */ + if (is_multicast_ether_addr(ntfy_mac)) + return; + /* Ignore my own addresses */ + if (qeth_is_my_net_if_token(card, token)) + return; + + info.addr = ntfy_mac; + /* don't report VLAN IDs */ + info.vid = 0; + info.added_by_user = false; + info.offloaded = true; + + if (code & IPA_ADDR_CHANGE_CODE_REMOVAL) { + call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE, + card->dev, &info.info, NULL); + QETH_CARD_TEXT(card, 4, "andelmac"); + QETH_CARD_TEXT_(card, 4, + "mc%012llx", ether_addr_to_u64(ntfy_mac)); + } else { + call_switchdev_notifiers(SWITCHDEV_FDB_ADD_TO_BRIDGE, + card->dev, &info.info, NULL); + QETH_CARD_TEXT(card, 4, "anaddmac"); + QETH_CARD_TEXT_(card, 4, + "mc%012llx", ether_addr_to_u64(ntfy_mac)); } +} - napi_complete(napi); - if (qdio_start_irq(card->data.ccwdev, 0)) - napi_schedule(&card->napi); -out: - if (card->options.performance_stats) - card->perf_stats.inbound_time += qeth_get_micros() - - card->perf_stats.inbound_start_time; - return work_done; +static void qeth_l2_dev2br_an_set_cb(void *priv, + struct chsc_pnso_naid_l2 *entry) +{ + u8 code = IPA_ADDR_CHANGE_CODE_MACADDR; + struct qeth_card *card = priv; + + if (entry->addr_lnid.lnid < VLAN_N_VID) + code |= IPA_ADDR_CHANGE_CODE_VLANID; + qeth_l2_dev2br_fdb_notify(card, code, + (struct net_if_token *)&entry->nit, + (struct mac_addr_lnid *)&entry->addr_lnid); } -static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac, - enum qeth_ipa_cmds ipacmd, - int (*reply_cb) (struct qeth_card *, - struct qeth_reply*, - unsigned long)) +/** + * qeth_l2_dev2br_an_set() - + * Enable or disable 'dev to bridge network address notification' + * @card: qeth_card structure pointer + * @enable: Enable or disable 'dev to bridge network address notification' + * + * Returns negative errno-compatible error indication or 0 on success. + * + * On enable, emits a series of address notifications for all + * currently registered hosts. + */ +static int qeth_l2_dev2br_an_set(struct qeth_card *card, bool enable) { - struct qeth_ipa_cmd *cmd; - struct qeth_cmd_buffer *iob; + int rc; - QETH_CARD_TEXT(card, 2, "L2sdmac"); - iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4); - cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); - cmd->data.setdelmac.mac_length = OSA_ADDR_LEN; - memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN); - return qeth_send_ipa_cmd(card, iob, reply_cb, NULL); + if (enable) { + QETH_CARD_TEXT(card, 2, "anseton"); + rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 1, + qeth_l2_dev2br_an_set_cb, card); + if (rc == -EAGAIN) + /* address notification enabled, but inconsistent + * addresses reported -> disable address notification + */ + qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, + NULL, NULL); + } else { + QETH_CARD_TEXT(card, 2, "ansetoff"); + rc = qeth_l2_pnso(card, PNSO_OC_NET_ADDR_INFO, 0, NULL, NULL); + } + + return rc; } -static int qeth_l2_send_setmac_cb(struct qeth_card *card, - struct qeth_reply *reply, - unsigned long data) +struct qeth_l2_br2dev_event_work { + struct work_struct work; + struct net_device *br_dev; + struct net_device *lsync_dev; + struct net_device *dst_dev; + unsigned long event; + unsigned char addr[ETH_ALEN]; +}; + +static const struct net_device_ops qeth_l2_iqd_netdev_ops; +static const struct net_device_ops qeth_l2_osa_netdev_ops; + +static bool qeth_l2_must_learn(struct net_device *netdev, + struct net_device *dstdev) { - struct qeth_ipa_cmd *cmd; + struct qeth_priv *priv; + + priv = netdev_priv(netdev); + return (netdev != dstdev && + (priv->brport_features & BR_LEARNING_SYNC) && + !(br_port_flag_is_set(netdev, BR_ISOLATED) && + br_port_flag_is_set(dstdev, BR_ISOLATED)) && + (netdev->netdev_ops == &qeth_l2_iqd_netdev_ops || + netdev->netdev_ops == &qeth_l2_osa_netdev_ops)); +} - QETH_CARD_TEXT(card, 2, "L2Smaccb"); - cmd = (struct qeth_ipa_cmd *) data; - if (cmd->hdr.return_code) { - QETH_CARD_TEXT_(card, 2, "L2er%x", cmd->hdr.return_code); - card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; - switch (cmd->hdr.return_code) { - case IPA_RC_L2_DUP_MAC: - case IPA_RC_L2_DUP_LAYER3_MAC: - dev_warn(&card->gdev->dev, - "MAC address %pM already exists\n", - cmd->data.setdelmac.mac); +/** + * qeth_l2_br2dev_worker() - update local MACs + * @work: bridge to device FDB update + * + * Update local MACs of a learning_sync bridgeport so it can receive + * messages for a destination port. + * In case of an isolated learning_sync port, also update its isolated + * siblings. + */ +static void qeth_l2_br2dev_worker(struct work_struct *work) +{ + struct qeth_l2_br2dev_event_work *br2dev_event_work = + container_of(work, struct qeth_l2_br2dev_event_work, work); + struct net_device *lsyncdev = br2dev_event_work->lsync_dev; + struct net_device *dstdev = br2dev_event_work->dst_dev; + struct net_device *brdev = br2dev_event_work->br_dev; + unsigned long event = br2dev_event_work->event; + unsigned char *addr = br2dev_event_work->addr; + struct qeth_card *card = lsyncdev->ml_priv; + struct net_device *lowerdev; + struct list_head *iter; + int err = 0; + + QETH_CARD_TEXT_(card, 4, "b2dw%04lx", event); + QETH_CARD_TEXT_(card, 4, "ma%012llx", ether_addr_to_u64(addr)); + + rcu_read_lock(); + /* Verify preconditions are still valid: */ + if (!netif_is_bridge_port(lsyncdev) || + brdev != netdev_master_upper_dev_get_rcu(lsyncdev)) + goto unlock; + if (!qeth_l2_must_learn(lsyncdev, dstdev)) + goto unlock; + + if (br_port_flag_is_set(lsyncdev, BR_ISOLATED)) { + /* Update lsyncdev and its isolated sibling(s): */ + iter = &brdev->adj_list.lower; + lowerdev = netdev_next_lower_dev_rcu(brdev, &iter); + while (lowerdev) { + if (br_port_flag_is_set(lowerdev, BR_ISOLATED)) { + switch (event) { + case SWITCHDEV_FDB_ADD_TO_DEVICE: + err = dev_uc_add(lowerdev, addr); + break; + case SWITCHDEV_FDB_DEL_TO_DEVICE: + err = dev_uc_del(lowerdev, addr); + break; + default: + break; + } + if (err) { + QETH_CARD_TEXT(card, 2, "b2derris"); + QETH_CARD_TEXT_(card, 2, + "err%02lx%03d", event, + lowerdev->ifindex); + } + } + lowerdev = netdev_next_lower_dev_rcu(brdev, &iter); + } + } else { + switch (event) { + case SWITCHDEV_FDB_ADD_TO_DEVICE: + err = dev_uc_add(lsyncdev, addr); break; - case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP: - case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP: - dev_warn(&card->gdev->dev, - "MAC address %pM is not authorized\n", - cmd->data.setdelmac.mac); + case SWITCHDEV_FDB_DEL_TO_DEVICE: + err = dev_uc_del(lsyncdev, addr); break; default: break; } - } else { - card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED; - memcpy(card->dev->dev_addr, cmd->data.setdelmac.mac, - OSA_ADDR_LEN); - dev_info(&card->gdev->dev, - "MAC address %pM successfully registered on device %s\n", - card->dev->dev_addr, card->dev->name); + if (err) + QETH_CARD_TEXT_(card, 2, "b2derr%02lx", event); } + +unlock: + rcu_read_unlock(); + dev_put(brdev); + dev_put(lsyncdev); + dev_put(dstdev); + kfree(br2dev_event_work); +} + +static int qeth_l2_br2dev_queue_work(struct net_device *brdev, + struct net_device *lsyncdev, + struct net_device *dstdev, + unsigned long event, + const unsigned char *addr) +{ + struct qeth_l2_br2dev_event_work *worker_data; + struct qeth_card *card; + + worker_data = kzalloc(sizeof(*worker_data), GFP_ATOMIC); + if (!worker_data) + return -ENOMEM; + INIT_WORK(&worker_data->work, qeth_l2_br2dev_worker); + worker_data->br_dev = brdev; + worker_data->lsync_dev = lsyncdev; + worker_data->dst_dev = dstdev; + worker_data->event = event; + ether_addr_copy(worker_data->addr, addr); + + card = lsyncdev->ml_priv; + /* Take a reference on the sw port devices and the bridge */ + dev_hold(brdev); + dev_hold(lsyncdev); + dev_hold(dstdev); + queue_work(card->event_wq, &worker_data->work); return 0; } -static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac) +/* Called under rtnl_lock */ +static int qeth_l2_switchdev_event(struct notifier_block *unused, + unsigned long event, void *ptr) { - QETH_CARD_TEXT(card, 2, "L2Setmac"); - return qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC, - qeth_l2_send_setmac_cb); + struct net_device *dstdev, *brdev, *lowerdev; + struct switchdev_notifier_fdb_info *fdb_info; + struct switchdev_notifier_info *info = ptr; + struct list_head *iter; + struct qeth_card *card; + int rc; + + if (!(event == SWITCHDEV_FDB_ADD_TO_DEVICE || + event == SWITCHDEV_FDB_DEL_TO_DEVICE)) + return NOTIFY_DONE; + + dstdev = switchdev_notifier_info_to_dev(info); + brdev = netdev_master_upper_dev_get_rcu(dstdev); + if (!brdev || !netif_is_bridge_master(brdev)) + return NOTIFY_DONE; + fdb_info = container_of(info, + struct switchdev_notifier_fdb_info, + info); + iter = &brdev->adj_list.lower; + lowerdev = netdev_next_lower_dev_rcu(brdev, &iter); + while (lowerdev) { + if (qeth_l2_must_learn(lowerdev, dstdev)) { + card = lowerdev->ml_priv; + QETH_CARD_TEXT_(card, 4, "b2dqw%03lx", event); + rc = qeth_l2_br2dev_queue_work(brdev, lowerdev, + dstdev, event, + fdb_info->addr); + if (rc) { + QETH_CARD_TEXT(card, 2, "b2dqwerr"); + return NOTIFY_BAD; + } + } + lowerdev = netdev_next_lower_dev_rcu(brdev, &iter); + } + return NOTIFY_DONE; } -static int qeth_l2_send_delmac_cb(struct qeth_card *card, - struct qeth_reply *reply, - unsigned long data) +static struct notifier_block qeth_l2_sw_notifier = { + .notifier_call = qeth_l2_switchdev_event, +}; + +static refcount_t qeth_l2_switchdev_notify_refcnt; + +/* Called under rtnl_lock */ +static void qeth_l2_br2dev_get(void) { - struct qeth_ipa_cmd *cmd; + int rc; - QETH_CARD_TEXT(card, 2, "L2Dmaccb"); - cmd = (struct qeth_ipa_cmd *) data; - if (cmd->hdr.return_code) { - QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code); - return 0; + if (!refcount_inc_not_zero(&qeth_l2_switchdev_notify_refcnt)) { + rc = register_switchdev_notifier(&qeth_l2_sw_notifier); + if (rc) { + QETH_DBF_MESSAGE(2, + "failed to register qeth_l2_sw_notifier: %d\n", + rc); + } else { + refcount_set(&qeth_l2_switchdev_notify_refcnt, 1); + QETH_DBF_MESSAGE(2, "qeth_l2_sw_notifier registered\n"); + } } - card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED; + QETH_DBF_TEXT_(SETUP, 2, "b2d+%04d", + qeth_l2_switchdev_notify_refcnt.refs.counter); +} - return 0; +/* Called under rtnl_lock */ +static void qeth_l2_br2dev_put(void) +{ + int rc; + + if (refcount_dec_and_test(&qeth_l2_switchdev_notify_refcnt)) { + rc = unregister_switchdev_notifier(&qeth_l2_sw_notifier); + if (rc) { + QETH_DBF_MESSAGE(2, + "failed to unregister qeth_l2_sw_notifier: %d\n", + rc); + } else { + QETH_DBF_MESSAGE(2, + "qeth_l2_sw_notifier unregistered\n"); + } + } + QETH_DBF_TEXT_(SETUP, 2, "b2d-%04d", + qeth_l2_switchdev_notify_refcnt.refs.counter); } -static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac) +static int qeth_l2_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, + struct net_device *dev, u32 filter_mask, + int nlflags) { - QETH_CARD_TEXT(card, 2, "L2Delmac"); - if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED)) - return 0; - return qeth_l2_send_setdelmac(card, mac, IPA_CMD_DELVMAC, - qeth_l2_send_delmac_cb); + struct qeth_priv *priv = netdev_priv(dev); + struct qeth_card *card = dev->ml_priv; + u16 mode = BRIDGE_MODE_UNDEF; + + /* Do not even show qeth devs that cannot do bridge_setlink */ + if (!priv->brport_hw_features || !netif_device_present(dev) || + qeth_bridgeport_is_in_use(card)) + return -EOPNOTSUPP; + + return ndo_dflt_bridge_getlink(skb, pid, seq, dev, + mode, priv->brport_features, + priv->brport_hw_features, + nlflags, filter_mask, NULL); } -static int qeth_l2_request_initial_mac(struct qeth_card *card) +static const struct nla_policy qeth_brport_policy[IFLA_BRPORT_MAX + 1] = { + [IFLA_BRPORT_LEARNING_SYNC] = { .type = NLA_U8 }, +}; + +/** + * qeth_l2_bridge_setlink() - set bridgeport attributes + * @dev: netdevice + * @nlh: netlink message header + * @flags: bridge flags (here: BRIDGE_FLAGS_SELF) + * @extack: extended ACK report struct + * + * Called under rtnl_lock + */ +static int qeth_l2_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh, + u16 flags, struct netlink_ext_ack *extack) { - int rc = 0; - char vendor_pre[] = {0x02, 0x00, 0x00}; + struct qeth_priv *priv = netdev_priv(dev); + struct nlattr *bp_tb[IFLA_BRPORT_MAX + 1]; + struct qeth_card *card = dev->ml_priv; + struct nlattr *attr, *nested_attr; + bool enable, has_protinfo = false; + int rem1, rem2; + int rc; - QETH_DBF_TEXT(SETUP, 2, "doL2init"); - QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card)); + if (!netif_device_present(dev)) + return -ENODEV; - if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) { - rc = qeth_query_setadapterparms(card); - if (rc) { - QETH_DBF_MESSAGE(2, "could not query adapter " - "parameters on device %s: x%x\n", - CARD_BUS_ID(card), rc); + nlmsg_for_each_attr(attr, nlh, sizeof(struct ifinfomsg), rem1) { + if (nla_type(attr) == IFLA_PROTINFO) { + rc = nla_parse_nested(bp_tb, IFLA_BRPORT_MAX, attr, + qeth_brport_policy, extack); + if (rc) + return rc; + has_protinfo = true; + } else if (nla_type(attr) == IFLA_AF_SPEC) { + nla_for_each_nested(nested_attr, attr, rem2) { + if (nla_type(nested_attr) == IFLA_BRIDGE_FLAGS) + continue; + NL_SET_ERR_MSG_ATTR(extack, nested_attr, + "Unsupported attribute"); + return -EINVAL; + } + } else { + NL_SET_ERR_MSG_ATTR(extack, attr, "Unsupported attribute"); + return -EINVAL; } } + if (!has_protinfo) + return 0; + if (!bp_tb[IFLA_BRPORT_LEARNING_SYNC]) + return -EINVAL; + if (!(priv->brport_hw_features & BR_LEARNING_SYNC)) { + NL_SET_ERR_MSG_ATTR(extack, bp_tb[IFLA_BRPORT_LEARNING_SYNC], + "Operation not supported by HW"); + return -EOPNOTSUPP; + } + if (!IS_ENABLED(CONFIG_NET_SWITCHDEV)) { + NL_SET_ERR_MSG_ATTR(extack, bp_tb[IFLA_BRPORT_LEARNING_SYNC], + "Requires NET_SWITCHDEV"); + return -EOPNOTSUPP; + } + enable = !!nla_get_u8(bp_tb[IFLA_BRPORT_LEARNING_SYNC]); - if (card->info.type == QETH_CARD_TYPE_IQD || - card->info.type == QETH_CARD_TYPE_OSM || - card->info.type == QETH_CARD_TYPE_OSX || - card->info.guestlan) { - rc = qeth_setadpparms_change_macaddr(card); + if (enable == !!(priv->brport_features & BR_LEARNING_SYNC)) + return 0; + + mutex_lock(&card->sbp_lock); + /* do not change anything if BridgePort is enabled */ + if (qeth_bridgeport_is_in_use(card)) { + NL_SET_ERR_MSG(extack, "n/a (BridgePort)"); + rc = -EBUSY; + } else if (enable) { + qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO); + rc = qeth_l2_dev2br_an_set(card, true); if (rc) { - QETH_DBF_MESSAGE(2, "couldn't get MAC address on " - "device %s: x%x\n", CARD_BUS_ID(card), rc); - QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); - return rc; + qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); + } else { + priv->brport_features |= BR_LEARNING_SYNC; + qeth_l2_br2dev_get(); } - QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN); } else { - eth_random_addr(card->dev->dev_addr); - memcpy(card->dev->dev_addr, vendor_pre, 3); + rc = qeth_l2_dev2br_an_set(card, false); + if (!rc) { + qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); + priv->brport_features ^= BR_LEARNING_SYNC; + qeth_l2_dev2br_fdb_flush(card); + qeth_l2_br2dev_put(); + } } - return 0; + mutex_unlock(&card->sbp_lock); + + return rc; } -static int qeth_l2_set_mac_address(struct net_device *dev, void *p) -{ - struct sockaddr *addr = p; - struct qeth_card *card = dev->ml_priv; - int rc = 0; +static const struct net_device_ops qeth_l2_iqd_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_iqd_select_queue, + .ndo_validate_addr = qeth_l2_validate_addr, + .ndo_set_rx_mode = qeth_l2_set_rx_mode, + .ndo_eth_ioctl = qeth_do_ioctl, + .ndo_siocdevprivate = qeth_siocdevprivate, + .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, + .ndo_bridge_getlink = qeth_l2_bridge_getlink, + .ndo_bridge_setlink = qeth_l2_bridge_setlink, +}; - QETH_CARD_TEXT(card, 3, "setmac"); +static const struct net_device_ops qeth_l2_osa_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_osa_select_queue, + .ndo_validate_addr = qeth_l2_validate_addr, + .ndo_set_rx_mode = qeth_l2_set_rx_mode, + .ndo_eth_ioctl = qeth_do_ioctl, + .ndo_siocdevprivate = qeth_siocdevprivate, + .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, +}; - if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) { - QETH_CARD_TEXT(card, 3, "setmcINV"); - return -EOPNOTSUPP; +static int qeth_l2_setup_netdev(struct qeth_card *card) +{ + card->dev->netdev_ops = IS_IQD(card) ? &qeth_l2_iqd_netdev_ops : + &qeth_l2_osa_netdev_ops; + card->dev->needed_headroom = sizeof(struct qeth_hdr); + 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 (card->info.type == QETH_CARD_TYPE_OSN || - card->info.type == QETH_CARD_TYPE_OSM || - card->info.type == QETH_CARD_TYPE_OSX) { - QETH_CARD_TEXT(card, 3, "setmcTYP"); - return -EOPNOTSUPP; + 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; } - QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN); - if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { - QETH_CARD_TEXT(card, 3, "setmcREC"); - return -ERESTARTSYS; + 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; } - rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]); - if (!rc || (rc == IPA_RC_L2_MAC_NOT_FOUND)) - rc = qeth_l2_send_setmac(card, addr->sa_data); - return rc ? -EINVAL : 0; + 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_keep_dst(card->dev); + netif_set_tso_max_size(card->dev, + PAGE_SIZE * (QDIO_MAX_ELEMENTS_PER_BUFFER - 1)); + } + + netif_napi_add(card->dev, &card->napi, qeth_poll); + return register_netdev(card->dev); } -static void qeth_l2_set_multicast_list(struct net_device *dev) +static void qeth_l2_trace_features(struct qeth_card *card) { - struct qeth_card *card = dev->ml_priv; - struct netdev_hw_addr *ha; + /* 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)); +} - if (card->info.type == QETH_CARD_TYPE_OSN) - return ; +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; + } +} - QETH_CARD_TEXT(card, 3, "setmulti"); - if (qeth_threads_running(card, QETH_RECOVER_THREAD) && - (card->state != CARD_STATE_UP)) +/** + * qeth_l2_detect_dev2br_support() - + * Detect whether this card supports 'dev to bridge fdb network address + * change notification' and thus can support the learning_sync bridgeport + * attribute + * @card: qeth_card structure pointer + */ +static void qeth_l2_detect_dev2br_support(struct qeth_card *card) +{ + struct qeth_priv *priv = netdev_priv(card->dev); + bool dev2br_supported; + + QETH_CARD_TEXT(card, 2, "d2brsup"); + if (!IS_IQD(card)) return; - qeth_l2_del_all_mc(card, 1); - spin_lock_bh(&card->mclock); - netdev_for_each_mc_addr(ha, dev) - qeth_l2_add_mc(card, ha->addr, 0); - netdev_for_each_uc_addr(ha, dev) - qeth_l2_add_mc(card, ha->addr, 1); + /* dev2br requires valid cssid,iid,chid */ + dev2br_supported = card->info.ids_valid && + css_general_characteristics.enarf; + QETH_CARD_TEXT_(card, 2, "D2Bsup%02x", dev2br_supported); - spin_unlock_bh(&card->mclock); - if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE)) - return; - qeth_setadp_promisc_mode(card); + if (dev2br_supported) + priv->brport_hw_features |= BR_LEARNING_SYNC; + else + priv->brport_hw_features &= ~BR_LEARNING_SYNC; } -static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) +static void qeth_l2_enable_brport_features(struct qeth_card *card) { + struct qeth_priv *priv = netdev_priv(card->dev); int rc; - struct qeth_hdr *hdr = NULL; - int elements = 0; - struct qeth_card *card = dev->ml_priv; - struct sk_buff *new_skb = skb; - int ipv = qeth_get_ip_version(skb); - int cast_type = qeth_l2_get_cast_type(card, skb); - struct qeth_qdio_out_q *queue = card->qdio.out_qs - [qeth_get_priority_queue(card, skb, ipv, cast_type)]; - int tx_bytes = skb->len; - int data_offset = -1; - int elements_needed = 0; - int hd_len = 0; - - if ((card->state != CARD_STATE_UP) || !card->lan_online) { - card->stats.tx_carrier_errors++; - goto tx_drop; + + if (priv->brport_features & BR_LEARNING_SYNC) { + if (priv->brport_hw_features & BR_LEARNING_SYNC) { + qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO); + rc = qeth_l2_dev2br_an_set(card, true); + if (rc == -EAGAIN) { + /* Recoverable error, retry once */ + qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); + qeth_l2_dev2br_fdb_flush(card); + qeth_l2_set_pnso_mode(card, QETH_PNSO_ADDR_INFO); + rc = qeth_l2_dev2br_an_set(card, true); + } + if (rc) { + netdev_err(card->dev, + "failed to enable bridge learning_sync: %d\n", + rc); + qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); + qeth_l2_dev2br_fdb_flush(card); + priv->brport_features ^= BR_LEARNING_SYNC; + } + } else { + dev_warn(&card->gdev->dev, + "bridge learning_sync not supported\n"); + priv->brport_features ^= BR_LEARNING_SYNC; + } + } +} + +/* 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: + scnprintf(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) { + scnprintf(str[i], sizeof(str[i]), "VLAN=%d", + addr_lnid->lnid); + env[i] = str[i]; i++; + } + if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { + scnprintf(str[i], sizeof(str[i]), "MAC=%pM", + addr_lnid->mac); + env[i] = str[i]; i++; + } + scnprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", + token->cssid, token->ssid, token->devnum); + env[i] = str[i]; i++; + scnprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); + env[i] = str[i]; i++; + scnprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", + token->chpid); + env[i] = str[i]; i++; + scnprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", + token->chid); + env[i] = str[i]; i++; + break; + case anev_abort: + scnprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); + env[i] = str[i]; i++; + break; + case anev_reset: + scnprintf(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); +} - if ((card->info.type == QETH_CARD_TYPE_OSN) && - (skb->protocol == htons(ETH_P_IPV6))) - goto tx_drop; +struct qeth_bridge_state_data { + struct work_struct worker; + struct qeth_card *card; + u8 role; + u8 state; +}; + +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); + char env_locrem[32]; + char env_role[32]; + char env_state[32]; + char *env[] = { + env_locrem, + env_role, + env_state, + NULL + }; + + scnprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange"); + scnprintf(env_role, sizeof(env_role), "ROLE=%s", + (data->role == QETH_SBP_ROLE_NONE) ? "none" : + (data->role == QETH_SBP_ROLE_PRIMARY) ? "primary" : + (data->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" : + "<INVALID>"); + scnprintf(env_state, sizeof(env_state), "STATE=%s", + (data->state == QETH_SBP_STATE_INACTIVE) ? "inactive" : + (data->state == QETH_SBP_STATE_STANDBY) ? "standby" : + (data->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_port_data *qports = &cmd->data.sbp.data.port_data; + struct qeth_bridge_state_data *data; - if (card->options.performance_stats) { - card->perf_stats.outbound_cnt++; - card->perf_stats.outbound_start_time = qeth_get_micros(); + QETH_CARD_TEXT(card, 2, "brstchng"); + if (qports->num_entries == 0) { + QETH_CARD_TEXT(card, 2, "BPempty"); + return; + } + if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) { + QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length); + return; } - netif_stop_queue(dev); - if (card->info.type == QETH_CARD_TYPE_OSN) - hdr = (struct qeth_hdr *)skb->data; - else { - if (card->info.type == QETH_CARD_TYPE_IQD) { - new_skb = skb; - data_offset = ETH_HLEN; - hd_len = ETH_HLEN; - hdr = kmem_cache_alloc(qeth_core_header_cache, - GFP_ATOMIC); - if (!hdr) - goto tx_drop; - elements_needed++; - skb_reset_mac_header(new_skb); - qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type); - hdr->hdr.l2.pkt_length = new_skb->len; - memcpy(((char *)hdr) + sizeof(struct qeth_hdr), - skb_mac_header(new_skb), ETH_HLEN); + data = kzalloc(sizeof(*data), GFP_ATOMIC); + if (!data) { + QETH_CARD_TEXT(card, 2, "BPSalloc"); + return; + } + INIT_WORK(&data->worker, qeth_bridge_state_change_worker); + data->card = card; + /* Information for the local port: */ + data->role = qports->entry[0].role; + data->state = qports->entry[0].state; + + queue_work(card->event_wq, &data->worker); +} + +struct qeth_addr_change_data { + struct delayed_work dwork; + struct qeth_card *card; + struct qeth_ipacmd_addr_change ac_event; +}; + +static void qeth_l2_dev2br_worker(struct work_struct *work) +{ + struct delayed_work *dwork = to_delayed_work(work); + struct qeth_addr_change_data *data; + struct qeth_card *card; + struct qeth_priv *priv; + unsigned int i; + int rc; + + data = container_of(dwork, struct qeth_addr_change_data, dwork); + card = data->card; + priv = netdev_priv(card->dev); + + QETH_CARD_TEXT(card, 4, "dev2brew"); + + if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE) + goto free; + + if (data->ac_event.lost_event_mask) { + /* Potential re-config in progress, try again later: */ + if (!rtnl_trylock()) { + queue_delayed_work(card->event_wq, dwork, + msecs_to_jiffies(100)); + return; + } + + if (!netif_device_present(card->dev)) { + rtnl_unlock(); + goto free; + } + + QETH_DBF_MESSAGE(3, + "Address change notification overflow on device %x\n", + CARD_DEVID(card)); + /* Card fdb and bridge fdb are out of sync, card has stopped + * notifications (no need to drain_workqueue). Purge all + * 'extern_learn' entries from the parent bridge and restart + * the notifications. + */ + qeth_l2_dev2br_fdb_flush(card); + rc = qeth_l2_dev2br_an_set(card, true); + if (rc) { + /* TODO: if we want to retry after -EAGAIN, be + * aware there could be stale entries in the + * workqueue now, that need to be drained. + * For now we give up: + */ + netdev_err(card->dev, + "bridge learning_sync failed to recover: %d\n", + rc); + WRITE_ONCE(card->info.pnso_mode, + QETH_PNSO_NONE); + /* To remove fdb entries reported by an_set: */ + qeth_l2_dev2br_fdb_flush(card); + priv->brport_features ^= BR_LEARNING_SYNC; } else { - /* create a clone with writeable headroom */ - new_skb = skb_realloc_headroom(skb, - sizeof(struct qeth_hdr)); - if (!new_skb) - goto tx_drop; - hdr = (struct qeth_hdr *)skb_push(new_skb, - sizeof(struct qeth_hdr)); - skb_set_mac_header(new_skb, sizeof(struct qeth_hdr)); - qeth_l2_fill_header(card, hdr, new_skb, ipv, cast_type); + QETH_DBF_MESSAGE(3, + "Address Notification resynced on device %x\n", + CARD_DEVID(card)); } - } - elements = qeth_get_elements_no(card, new_skb, elements_needed); - if (!elements) { - if (data_offset >= 0) - kmem_cache_free(qeth_core_header_cache, hdr); - goto tx_drop; + rtnl_unlock(); + } else { + for (i = 0; i < data->ac_event.num_entries; i++) { + struct qeth_ipacmd_addr_change_entry *entry = + &data->ac_event.entry[i]; + qeth_l2_dev2br_fdb_notify(card, + entry->change_code, + &entry->token, + &entry->addr_lnid); + } } - if (card->info.type != QETH_CARD_TYPE_IQD) { - if (qeth_hdr_chk_and_bounce(new_skb, &hdr, - sizeof(struct qeth_hdr_layer2))) - goto tx_drop; - rc = qeth_do_send_packet(card, queue, new_skb, hdr, - elements); +free: + kfree(data); +} + +static void qeth_addr_change_event_worker(struct work_struct *work) +{ + struct delayed_work *dwork = to_delayed_work(work); + struct qeth_addr_change_data *data; + struct qeth_card *card; + int i; + + data = container_of(dwork, struct qeth_addr_change_data, dwork); + card = data->card; + + QETH_CARD_TEXT(data->card, 4, "adrchgew"); + + if (READ_ONCE(card->info.pnso_mode) == QETH_PNSO_NONE) + goto free; + + if (data->ac_event.lost_event_mask) { + /* Potential re-config in progress, try again later: */ + if (!mutex_trylock(&card->sbp_lock)) { + queue_delayed_work(card->event_wq, dwork, + msecs_to_jiffies(100)); + return; + } + + dev_info(&data->card->gdev->dev, + "Address change notification stopped on %s (%s)\n", + netdev_name(card->dev), + (data->ac_event.lost_event_mask == 0x01) + ? "Overflow" + : (data->ac_event.lost_event_mask == 0x02) + ? "Bridge port state change" + : "Unknown reason"); + + data->card->options.sbp.hostnotification = 0; + card->info.pnso_mode = QETH_PNSO_NONE; + mutex_unlock(&data->card->sbp_lock); + qeth_bridge_emit_host_event(data->card, anev_abort, + 0, NULL, NULL); } else - rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr, - elements, data_offset, hd_len); - if (!rc) { - card->stats.tx_packets++; - card->stats.tx_bytes += tx_bytes; - if (new_skb != skb) - dev_kfree_skb_any(skb); - rc = NETDEV_TX_OK; + for (i = 0; i < data->ac_event.num_entries; i++) { + struct qeth_ipacmd_addr_change_entry *entry = + &data->ac_event.entry[i]; + qeth_bridge_emit_host_event(data->card, + anev_reg_unreg, + entry->change_code, + &entry->token, + &entry->addr_lnid); + } + +free: + kfree(data); +} + +static void qeth_addr_change_event(struct qeth_card *card, + struct qeth_ipa_cmd *cmd) +{ + struct qeth_ipacmd_addr_change *hostevs = + &cmd->data.addrchange; + struct qeth_addr_change_data *data; + int extrasize; + + if (card->info.pnso_mode == QETH_PNSO_NONE) + return; + + QETH_CARD_TEXT(card, 4, "adrchgev"); + 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, "ACHN%04x", + cmd->hdr.return_code); + return; + } + } + extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * + hostevs->num_entries; + data = kzalloc(sizeof(struct qeth_addr_change_data) + extrasize, + GFP_ATOMIC); + if (!data) { + QETH_CARD_TEXT(card, 2, "ACNalloc"); + return; + } + if (card->info.pnso_mode == QETH_PNSO_BRIDGEPORT) + INIT_DELAYED_WORK(&data->dwork, qeth_addr_change_event_worker); + else + INIT_DELAYED_WORK(&data->dwork, qeth_l2_dev2br_worker); + data->card = card; + data->ac_event = *hostevs; + memcpy(data->ac_event.entry, hostevs->entry, extrasize); + queue_delayed_work(card->event_wq, &data->dwork, 0); +} + +/* 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 { - if (data_offset >= 0) - kmem_cache_free(qeth_core_header_cache, hdr); - - if (rc == -EBUSY) { - if (new_skb != skb) - dev_kfree_skb_any(new_skb); - return NETDEV_TX_BUSY; - } else - goto tx_drop; + switch (ipa_rc) { + case IPA_RC_NOTSUPP: + rc = -EOPNOTSUPP; + break; + case IPA_RC_UNSUPPORTED_COMMAND: + rc = -EOPNOTSUPP; + break; + default: + rc = -EIO; + } } - netif_wake_queue(dev); - if (card->options.performance_stats) - card->perf_stats.outbound_time += qeth_get_micros() - - card->perf_stats.outbound_start_time; + if (rc) { + QETH_CARD_TEXT_(card, 2, "SBPi%04x", ipa_rc); + QETH_CARD_TEXT_(card, 2, "SBPc%04x", sbp_rc); + } return rc; +} -tx_drop: - card->stats.tx_dropped++; - card->stats.tx_errors++; - if ((new_skb != skb) && new_skb) - dev_kfree_skb_any(new_skb); - dev_kfree_skb_any(skb); - netif_wake_queue(dev); - return NETDEV_TX_OK; +static 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_l2_open(struct net_device *dev) +static int qeth_bridgeport_query_support_cb(struct qeth_card *card, + struct qeth_reply *reply, unsigned long data) { - struct qeth_card *card = dev->ml_priv; - int rc = 0; + 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, 4, "qethopen"); - if (card->state == CARD_STATE_UP) + QETH_CARD_TEXT(card, 2, "brqsupcb"); + rc = qeth_bridgeport_makerc(card, cmd); + if (rc) return rc; - if (card->state != CARD_STATE_SOFTSETUP) - return -ENODEV; - if ((card->info.type != QETH_CARD_TYPE_OSN) && - (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) { - QETH_CARD_TEXT(card, 4, "nomacadr"); - return -EPERM; - } - card->data.state = CH_STATE_UP; - card->state = CARD_STATE_UP; - netif_start_queue(dev); - - if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) { - napi_enable(&card->napi); - napi_schedule(&card->napi); - } else - rc = -EIO; - return rc; + cbctl->data.supported = + cmd->data.sbp.data.query_cmds_supp.supported_cmds; + return 0; } -static int qeth_l2_open(struct net_device *dev) +/** + * 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_card *card = dev->ml_priv; + struct qeth_cmd_buffer *iob; + struct _qeth_sbp_cbctl cbctl; - QETH_CARD_TEXT(card, 5, "qethope_"); - if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) { - QETH_CARD_TEXT(card, 3, "openREC"); - return -ERESTARTSYS; + 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; } - return __qeth_l2_open(dev); + card->options.sbp.supported_funcs = cbctl.data.supported; } -static int qeth_l2_stop(struct net_device *dev) +static int qeth_bridgeport_query_ports_cb(struct qeth_card *card, + struct qeth_reply *reply, unsigned long data) { - struct qeth_card *card = dev->ml_priv; + struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data; + struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param; + struct qeth_sbp_port_data *qports; + int rc; + + QETH_CARD_TEXT(card, 2, "brqprtcb"); + rc = qeth_bridgeport_makerc(card, cmd); + if (rc) + return rc; - QETH_CARD_TEXT(card, 4, "qethstop"); - netif_tx_disable(dev); - if (card->state == CARD_STATE_UP) { - card->state = CARD_STATE_SOFTSETUP; - napi_disable(&card->napi); + qports = &cmd->data.sbp.data.port_data; + 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; } -static int qeth_l2_probe_device(struct ccwgroup_device *gdev) +/** + * 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_card *card = dev_get_drvdata(&gdev->dev); + 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; - INIT_LIST_HEAD(&card->vid_list); - INIT_LIST_HEAD(&card->mc_list); - card->options.layer2 = 1; - card->info.hwtrap = 0; - return 0; + return qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb, + &cbctl); } -static void qeth_l2_remove_device(struct ccwgroup_device *cgdev) +static int qeth_bridgeport_set_cb(struct qeth_card *card, + struct qeth_reply *reply, unsigned long data) { - struct qeth_card *card = dev_get_drvdata(&cgdev->dev); + struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data; - qeth_set_allowed_threads(card, 0, 1); - wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); + QETH_CARD_TEXT(card, 2, "brsetrcb"); + return qeth_bridgeport_makerc(card, cmd); +} - if (cgdev->state == CCWGROUP_ONLINE) - qeth_l2_set_offline(cgdev); +/** + * 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; - if (card->dev) { - unregister_netdev(card->dev); - card->dev = NULL; + 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; } - return; + 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); } -static const struct ethtool_ops qeth_l2_ethtool_ops = { - .get_link = ethtool_op_get_link, - .get_strings = qeth_core_get_strings, - .get_ethtool_stats = qeth_core_get_ethtool_stats, - .get_sset_count = qeth_core_get_sset_count, - .get_drvinfo = qeth_core_get_drvinfo, - .get_settings = qeth_core_ethtool_get_settings, -}; +static void qeth_bridgeport_an_set_cb(void *priv, + struct chsc_pnso_naid_l2 *entry) +{ + struct qeth_card *card = (struct qeth_card *)priv; + u8 code; + + code = IPA_ADDR_CHANGE_CODE_MACADDR; + if (entry->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 *)&entry->nit, + (struct mac_addr_lnid *)&entry->addr_lnid); +} -static const struct ethtool_ops qeth_l2_osn_ops = { - .get_strings = qeth_core_get_strings, - .get_ethtool_stats = qeth_core_get_ethtool_stats, - .get_sset_count = qeth_core_get_sset_count, - .get_drvinfo = qeth_core_get_drvinfo, -}; +/** + * 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; -static const struct net_device_ops qeth_l2_netdev_ops = { - .ndo_open = qeth_l2_open, - .ndo_stop = qeth_l2_stop, - .ndo_get_stats = qeth_get_stats, - .ndo_start_xmit = qeth_l2_hard_start_xmit, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_rx_mode = qeth_l2_set_multicast_list, - .ndo_do_ioctl = qeth_l2_do_ioctl, - .ndo_set_mac_address = qeth_l2_set_mac_address, - .ndo_change_mtu = qeth_change_mtu, - .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, -}; + if (!card->options.sbp.supported_funcs) + return -EOPNOTSUPP; -static int qeth_l2_setup_netdev(struct qeth_card *card) + if (enable) { + qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); + qeth_l2_set_pnso_mode(card, QETH_PNSO_BRIDGEPORT); + rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 1, + qeth_bridgeport_an_set_cb, card); + if (rc) + qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); + } else { + rc = qeth_l2_pnso(card, PNSO_OC_NET_BRIDGE_INFO, 0, NULL, NULL); + qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); + } + return rc; +} + +/* 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) { - switch (card->info.type) { - case QETH_CARD_TYPE_IQD: - card->dev = alloc_netdev(0, "hsi%d", ether_setup); + 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 QETH_CARD_TYPE_OSN: - card->dev = alloc_netdev(0, "osn%d", ether_setup); - card->dev->flags |= IFF_NOARP; + 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: - card->dev = alloc_etherdev(0); + rc = -EIO; } - if (!card->dev) - return -ENODEV; + QETH_CARD_TEXT_(card, 2, "err%04x", ipa_rc); + return rc; +} - card->dev->ml_priv = card; - card->dev->watchdog_timeo = QETH_TX_TIMEOUT; - card->dev->mtu = card->info.initial_mtu; - card->dev->netdev_ops = &qeth_l2_netdev_ops; - if (card->info.type != QETH_CARD_TYPE_OSN) - SET_ETHTOOL_OPS(card->dev, &qeth_l2_ethtool_ops); - else - SET_ETHTOOL_OPS(card->dev, &qeth_l2_osn_ops); - card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; - card->info.broadcast_capable = 1; - qeth_l2_request_initial_mac(card); - SET_NETDEV_DEV(card->dev, &card->gdev->dev); - netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT); - return register_netdev(card->dev); +/* 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 int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode) +static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card, + u32 vnicc_cmd, + unsigned int data_length) { - struct qeth_card *card = dev_get_drvdata(&gdev->dev); - int rc = 0; - enum qeth_card_states recover_flag; + struct qeth_ipacmd_vnicc_hdr *hdr; + struct qeth_cmd_buffer *iob; - mutex_lock(&card->discipline_mutex); - mutex_lock(&card->conf_mutex); - QETH_DBF_TEXT(SETUP, 2, "setonlin"); - QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); + iob = qeth_ipa_alloc_cmd(card, IPA_CMD_VNICC, QETH_PROT_NONE, + data_length + + offsetof(struct qeth_ipacmd_vnicc, data)); + if (!iob) + return NULL; - recover_flag = card->state; - rc = qeth_core_hardsetup_card(card); - if (rc) { - QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); - rc = -ENODEV; - goto out_remove; - } - qeth_trace_features(card); + hdr = &__ipa_cmd(iob)->data.vnicc.hdr; + hdr->data_length = sizeof(*hdr) + data_length; + hdr->sub_command = vnicc_cmd; + return iob; +} - if (!card->dev && qeth_l2_setup_netdev(card)) { - rc = -ENODEV; - goto out_remove; - } +/* VNICC query VNIC characteristics request */ +static int qeth_l2_vnicc_query_chars(struct qeth_card *card) +{ + struct qeth_cmd_buffer *iob; - if (card->info.type != QETH_CARD_TYPE_OSN) - qeth_l2_send_setmac(card, &card->dev->dev_addr[0]); + QETH_CARD_TEXT(card, 2, "vniccqch"); + iob = qeth_l2_vnicc_build_cmd(card, IPA_VNICC_QUERY_CHARS, 0); + if (!iob) + return -ENOMEM; - 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; + return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); +} - card->state = CARD_STATE_HARDSETUP; - memset(&card->rx, 0, sizeof(struct qeth_rx)); - qeth_print_status_message(card); +/* 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; - /* softsetup */ - QETH_DBF_TEXT(SETUP, 2, "softsetp"); + 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; - rc = qeth_send_startlan(card); - if (rc) { - QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); - if (rc == 0xe080) { - dev_warn(&card->gdev->dev, - "The LAN is offline\n"); - card->lan_online = 0; - goto contin; - } - rc = -ENODEV; - goto out_remove; - } else - card->lan_online = 1; + __ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char; -contin: - if ((card->info.type == QETH_CARD_TYPE_OSD) || - (card->info.type == QETH_CARD_TYPE_OSX)) { - /* configure isolation level */ - rc = qeth_set_access_ctrl_online(card, 0); - if (rc) { - rc = -ENODEV; - goto out_remove; - } - } + return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, sup_cmds); +} - if (card->info.type != QETH_CARD_TYPE_OSN && - card->info.type != QETH_CARD_TYPE_OSM) - qeth_l2_process_vlans(card); +/* 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; - netif_tx_disable(card->dev); + QETH_CARD_TEXT(card, 2, "vniccedc"); + iob = qeth_l2_vnicc_build_cmd(card, cmd, VNICC_DATA_SIZEOF(set_char)); + if (!iob) + return -ENOMEM; - 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; - if (card->lan_online) - netif_carrier_on(card->dev); - else - netif_carrier_off(card->dev); + __ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char; - qeth_set_allowed_threads(card, 0xffffffff, 0); - if (recover_flag == CARD_STATE_RECOVER) { - if (recovery_mode && - card->info.type != QETH_CARD_TYPE_OSN) { - __qeth_l2_open(card->dev); - } else { - rtnl_lock(); - dev_open(card->dev); - rtnl_unlock(); - } - /* this also sets saved unicast addresses */ - qeth_l2_set_multicast_list(card->dev); - } - /* 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; + return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL); +} -out_remove: - qeth_l2_stop_card(card, 0); - ccw_device_set_offline(CARD_DDEV(card)); - ccw_device_set_offline(CARD_WDEV(card)); - ccw_device_set_offline(CARD_RDEV(card)); - if (recover_flag == CARD_STATE_RECOVER) - card->state = CARD_STATE_RECOVER; - else - card->state = CARD_STATE_DOWN; - mutex_unlock(&card->conf_mutex); - mutex_unlock(&card->discipline_mutex); - return rc; +/* 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); } -static int qeth_l2_set_online(struct ccwgroup_device *gdev) +/* recover user timeout setting */ +static bool qeth_l2_vnicc_recover_timeout(struct qeth_card *card, u32 vnicc, + u32 *timeout) { - return __qeth_l2_set_online(gdev, 0); + 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; } -static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev, - int recovery_mode) +/* set current VNICC flag state; called from sysfs store function */ +int qeth_l2_vnicc_set_state(struct qeth_card *card, u32 vnicc, bool state) { - struct qeth_card *card = dev_get_drvdata(&cgdev->dev); - int rc = 0, rc2 = 0, rc3 = 0; - enum qeth_card_states recover_flag; + int rc = 0; + u32 cmd; - mutex_lock(&card->discipline_mutex); - mutex_lock(&card->conf_mutex); - QETH_DBF_TEXT(SETUP, 3, "setoffl"); - QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *)); + QETH_CARD_TEXT(card, 2, "vniccsch"); - if (card->dev && netif_carrier_ok(card->dev)) - netif_carrier_off(card->dev); - recover_flag = card->state; - if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) { - qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); - card->info.hwtrap = 1; + /* 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; } - qeth_l2_stop_card(card, recovery_mode); - rc = ccw_device_set_offline(CARD_DDEV(card)); - rc2 = ccw_device_set_offline(CARD_WDEV(card)); - rc3 = ccw_device_set_offline(CARD_RDEV(card)); - if (!rc) - rc = (rc2) ? rc2 : rc3; + + /* 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) - QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); - if (recover_flag == CARD_STATE_UP) - card->state = CARD_STATE_RECOVER; - /* let user_space know that device is offline */ - kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE); - mutex_unlock(&card->conf_mutex); - mutex_unlock(&card->discipline_mutex); - return 0; + 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; } -static int qeth_l2_set_offline(struct ccwgroup_device *cgdev) +/* get current VNICC flag state; called from sysfs show function */ +int qeth_l2_vnicc_get_state(struct qeth_card *card, u32 vnicc, bool *state) { - return __qeth_l2_set_offline(cgdev, 0); + 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; } -static int qeth_l2_recover(void *ptr) +/* 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) { - 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_set_recovery_task(card); - __qeth_l2_set_offline(card->gdev, 1); - rc = __qeth_l2_set_online(card->gdev, 1); + 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) - dev_info(&card->gdev->dev, - "Device successfully recovered!\n"); - else { - qeth_close_dev(card); - dev_warn(&card->gdev->dev, "The qeth device driver " - "failed to recover an error on the device\n"); + 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 */ +static 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; } - qeth_clear_recovery_task(card); - qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); - qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); - return 0; + return true; } -static int __init qeth_l2_init(void) +/** + * qeth_bridgeport_allowed - are any qeth_bridgeport functions allowed? + * @card: qeth_card structure pointer + * + * qeth_bridgeport functionality is mutually exclusive with usage of the + * VNIC Characteristics and dev2br address notifications + */ +bool qeth_bridgeport_allowed(struct qeth_card *card) { - pr_info("register layer 2 discipline\n"); - return 0; + struct qeth_priv *priv = netdev_priv(card->dev); + + return (!_qeth_l2_vnicc_is_in_use(card) && + !(priv->brport_features & BR_LEARNING_SYNC)); } -static void __exit qeth_l2_exit(void) +/* recover user characteristic setting */ +static bool qeth_l2_vnicc_recover_char(struct qeth_card *card, u32 vnicc, + bool enable) { - pr_info("unregister layer 2 discipline\n"); + 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; } -static void qeth_l2_shutdown(struct ccwgroup_device *gdev) +/* (re-)initialize VNICC */ +static void qeth_l2_vnicc_init(struct qeth_card *card) { - struct qeth_card *card = dev_get_drvdata(&gdev->dev); - qeth_set_allowed_threads(card, 0, 1); - if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap) - qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); - qeth_qdio_clear_card(card, 0); - qeth_clear_qdio_buffers(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"); } -static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev) +/* 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; +} + +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 (card->dev) - netif_device_detach(card->dev); - qeth_set_allowed_threads(card, 0, 1); - wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); - if (gdev->state == CCWGROUP_OFFLINE) - return 0; - if (card->state == CARD_STATE_UP) { - if (card->info.hwtrap) - qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM); - __qeth_l2_set_offline(card->gdev, 1); - } else - __qeth_l2_set_offline(card->gdev, 0); + qeth_l2_vnicc_set_defaults(card); + mutex_init(&card->sbp_lock); + + if (gdev->dev.type) { + rc = device_add_groups(&gdev->dev, qeth_l2_attr_groups); + if (rc) + return rc; + } else { + gdev->dev.type = &qeth_l2_devtype; + } + + INIT_WORK(&card->rx_mode_work, qeth_l2_rx_mode_work); return 0; } -static int qeth_l2_pm_resume(struct ccwgroup_device *gdev) +static void qeth_l2_remove_device(struct ccwgroup_device *gdev) { struct qeth_card *card = dev_get_drvdata(&gdev->dev); - int rc = 0; + struct qeth_priv *priv; - if (gdev->state == CCWGROUP_OFFLINE) - goto out; + if (gdev->dev.type != &qeth_l2_devtype) + device_remove_groups(&gdev->dev, qeth_l2_attr_groups); - if (card->state == CARD_STATE_RECOVER) { - rc = __qeth_l2_set_online(card->gdev, 1); - if (rc) { + qeth_set_allowed_threads(card, 0, 1); + wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0); + + if (gdev->state == CCWGROUP_ONLINE) + qeth_set_offline(card, card->discipline, false); + + if (card->dev->reg_state == NETREG_REGISTERED) { + priv = netdev_priv(card->dev); + if (priv->brport_features & BR_LEARNING_SYNC) { rtnl_lock(); - dev_close(card->dev); + qeth_l2_br2dev_put(); rtnl_unlock(); } - } else - rc = __qeth_l2_set_online(card->gdev, 0); -out: - qeth_set_allowed_threads(card, 0xffffffff, 0); - if (card->dev) - netif_device_attach(card->dev); - if (rc) - dev_warn(&card->gdev->dev, "The qeth device driver " - "failed to recover an error on the device\n"); - return rc; + unregister_netdev(card->dev); + } } -struct qeth_discipline qeth_l2_discipline = { - .start_poll = qeth_qdio_start_poll, - .input_handler = (qdio_handler_t *) qeth_qdio_input_handler, - .output_handler = (qdio_handler_t *) qeth_qdio_output_handler, - .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, - .shutdown = qeth_l2_shutdown, - .freeze = qeth_l2_pm_suspend, - .thaw = qeth_l2_pm_resume, - .restore = qeth_l2_pm_resume, -}; -EXPORT_SYMBOL_GPL(qeth_l2_discipline); - -static int qeth_osn_send_control_data(struct qeth_card *card, int len, - struct qeth_cmd_buffer *iob) +static int qeth_l2_set_online(struct qeth_card *card, bool carrier_ok) { - unsigned long flags; + struct net_device *dev = card->dev; int rc = 0; - QETH_CARD_TEXT(card, 5, "osndctrd"); + qeth_l2_detect_dev2br_support(card); - wait_event(card->wait_q, - atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0); - qeth_prepare_control_data(card, len, iob); - QETH_CARD_TEXT(card, 6, "osnoirqp"); - spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); - rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, - (addr_t) iob, 0, 0); - spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); - 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(iob->channel, iob); - atomic_set(&card->write.irq_pending, 0); - wake_up(&card->wait_q); + 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_l2_trace_features(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 err_setup; + + if (carrier_ok) + netif_carrier_on(dev); + } else { + rtnl_lock(); + rc = qeth_set_real_num_tx_queues(card, + qeth_tx_actual_queues(card)); + if (rc) { + rtnl_unlock(); + goto err_set_queues; + } + + if (carrier_ok) + netif_carrier_on(dev); + else + netif_carrier_off(dev); + + netif_device_attach(dev); + qeth_enable_hw_features(dev); + qeth_l2_enable_brport_features(card); + + if (netif_running(dev)) { + local_bh_disable(); + napi_schedule(&card->napi); + /* kick-start the NAPI softirq: */ + local_bh_enable(); + qeth_l2_set_rx_mode(dev); + } + rtnl_unlock(); + } + return 0; + +err_set_queues: +err_setup: + qeth_set_allowed_threads(card, 0, 1); + card->state = CARD_STATE_DOWN; return rc; } -static int qeth_osn_send_ipa_cmd(struct qeth_card *card, - struct qeth_cmd_buffer *iob, int data_len) +static void qeth_l2_set_offline(struct qeth_card *card) { - u16 s1, s2; + struct qeth_priv *priv = netdev_priv(card->dev); + + qeth_set_allowed_threads(card, 0, 1); + qeth_l2_drain_rx_mode_cache(card); - QETH_CARD_TEXT(card, 4, "osndipa"); + if (card->state == CARD_STATE_SOFTSETUP) + card->state = CARD_STATE_DOWN; - qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2); - s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len); - s2 = (u16)data_len; - memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); - memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); - memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); - memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); - return qeth_osn_send_control_data(card, s1, iob); + qeth_l2_set_pnso_mode(card, QETH_PNSO_NONE); + if (priv->brport_features & BR_LEARNING_SYNC) + qeth_l2_dev2br_fdb_flush(card); } -int qeth_osn_assist(struct net_device *dev, void *data, int data_len) +/* Returns zero if the command is successfully "consumed" */ +static int qeth_l2_control_event(struct qeth_card *card, + struct qeth_ipa_cmd *cmd) { - struct qeth_cmd_buffer *iob; - struct qeth_card *card; - int rc; + 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; + } - if (!dev) - return -ENODEV; - card = dev->ml_priv; - if (!card) - return -ENODEV; - QETH_CARD_TEXT(card, 2, "osnsdmc"); - if ((card->state != CARD_STATE_UP) && - (card->state != CARD_STATE_SOFTSETUP)) - return -ENODEV; - iob = qeth_wait_for_buffer(&card->write); - memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len); - rc = qeth_osn_send_ipa_cmd(card, iob, data_len); - return rc; + return 1; + case IPA_CMD_ADDRESS_CHANGE_NOTIF: + qeth_addr_change_event(card, cmd); + return 0; + default: + return 1; + } } -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; +const struct qeth_discipline qeth_l2_discipline = { + .setup = qeth_l2_probe_device, + .remove = qeth_l2_remove_device, + .set_online = qeth_l2_set_online, + .set_offline = qeth_l2_set_offline, + .control_event_handler = qeth_l2_control_event, +}; +EXPORT_SYMBOL_GPL(qeth_l2_discipline); - *dev = qeth_l2_netdev_by_devno(read_dev_no); - if (*dev == NULL) - return -ENODEV; - card = (*dev)->ml_priv; - if (!card) - return -ENODEV; - 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; +static int __init qeth_l2_init(void) +{ + pr_info("register layer 2 discipline\n"); + refcount_set(&qeth_l2_switchdev_notify_refcnt, 0); return 0; } -EXPORT_SYMBOL(qeth_osn_register); -void qeth_osn_deregister(struct net_device *dev) +static void __exit qeth_l2_exit(void) { - 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; + pr_info("unregister layer 2 discipline\n"); } -EXPORT_SYMBOL(qeth_osn_deregister); module_init(qeth_l2_init); module_exit(qeth_l2_exit); |