diff options
| -rw-r--r-- | Documentation/s390/qeth.txt | 29 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_core.h | 5 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_core_main.c | 3 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_core_mpc.c | 1 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_core_mpc.h | 38 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_l2_main.c | 230 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_l2_sys.c | 62 |
7 files changed, 368 insertions, 0 deletions
diff --git a/Documentation/s390/qeth.txt b/Documentation/s390/qeth.txt index c08c305..74122ad 100644 --- a/Documentation/s390/qeth.txt +++ b/Documentation/s390/qeth.txt @@ -19,3 +19,32 @@ BRIDGEPORT=statechange - indicates that the Bridge Port device changed ROLE={primary|secondary|none} - the role assigned to the port. STATE={active|standby|inactive} - the newly assumed state of the port. + +When run on HiperSockets Bridge Capable Port hardware with host address +notifications enabled, a udev event with ACTION=CHANGE is emitted. +It is emitted on behalf of the corresponding ccwgroup device when a host +or a VLAN is registered or unregistered on the network served by the device. +The event has the following attributes: + +BRIDGEDHOST={reset|register|deregister|abort} - host address + notifications are started afresh, a new host or VLAN is registered or + deregistered on the Bridge Port HiperSockets channel, or address + notifications are aborted. + +VLAN=numeric-vlan-id - VLAN ID on which the event occurred. Not included + if no VLAN is involved in the event. + +MAC=xx:xx:xx:xx:xx:xx - MAC address of the host that is being registered + or deregistered from the HiperSockets channel. Not reported if the + event reports the creation or destruction of a VLAN. + +NTOK_BUSID=x.y.zzzz - device bus ID (CSSID, SSID and device number). + +NTOK_IID=xx - device IID. + +NTOK_CHPID=xx - device CHPID. + +NTOK_CHID=xxxx - device channel ID. + +Note that the NTOK_* attributes refer to devices other than the one +connected to the system on which the OS is running. diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index 010f49e..ac0bdde 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -169,9 +169,12 @@ enum qeth_sbp_states { QETH_SBP_STATE_ACTIVE = 2, }; +#define QETH_SBP_HOST_NOTIFICATION 1 + struct qeth_sbp_info { __u32 supported_funcs; enum qeth_sbp_roles role; + __u32 hostnotification:1; }; static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa, @@ -950,6 +953,8 @@ void qeth_bridgeport_query_support(struct qeth_card *card); int qeth_bridgeport_query_ports(struct qeth_card *card, enum qeth_sbp_roles *role, enum qeth_sbp_states *state); int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role); +int qeth_bridgeport_an_set(struct qeth_card *card, int enable); +void qeth_bridge_host_event(struct qeth_card *card, struct qeth_ipa_cmd *cmd); int qeth_get_priority_queue(struct qeth_card *, struct sk_buff *, int, int); int qeth_get_elements_no(struct qeth_card *, struct sk_buff *, int); int qeth_get_elements_for_frags(struct sk_buff *); diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 1ffea16..c05dacb 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -622,6 +622,9 @@ static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, return NULL; } else return cmd; + case IPA_CMD_ADDRESS_CHANGE_NOTIF: + qeth_bridge_host_event(card, cmd); + return NULL; case IPA_CMD_MODCCID: return cmd; case IPA_CMD_REGISTER_LOCAL_ADDR: diff --git a/drivers/s390/net/qeth_core_mpc.c b/drivers/s390/net/qeth_core_mpc.c index 2f44cfd..7b55768 100644 --- a/drivers/s390/net/qeth_core_mpc.c +++ b/drivers/s390/net/qeth_core_mpc.c @@ -254,6 +254,7 @@ static struct ipa_cmd_names qeth_ipa_cmd_names[] = { {IPA_CMD_DESTROY_ADDR, "destroy_addr"}, {IPA_CMD_REGISTER_LOCAL_ADDR, "register_local_addr"}, {IPA_CMD_UNREGISTER_LOCAL_ADDR, "unregister_local_addr"}, + {IPA_CMD_ADDRESS_CHANGE_NOTIF, "address_change_notification"}, {IPA_CMD_UNKNOWN, "unknown"}, }; diff --git a/drivers/s390/net/qeth_core_mpc.h b/drivers/s390/net/qeth_core_mpc.h index de62679..cf6a90e 100644 --- a/drivers/s390/net/qeth_core_mpc.h +++ b/drivers/s390/net/qeth_core_mpc.h @@ -109,6 +109,7 @@ enum qeth_ipa_cmds { IPA_CMD_DESTROY_ADDR = 0xc4, IPA_CMD_REGISTER_LOCAL_ADDR = 0xd1, IPA_CMD_UNREGISTER_LOCAL_ADDR = 0xd2, + IPA_CMD_ADDRESS_CHANGE_NOTIF = 0xd3, IPA_CMD_UNKNOWN = 0x00 }; @@ -520,6 +521,11 @@ struct net_if_token { __u16 chid; } __packed; +struct mac_addr_lnid { + __u8 mac[6]; + __u16 lnid; +} __packed; + struct qeth_ipacmd_sbp_hdr { __u32 supported_sbp_cmds; __u32 enabled_sbp_cmds; @@ -583,6 +589,37 @@ struct qeth_ipacmd_setbridgeport { } data; } __packed; +/* ADDRESS_CHANGE_NOTIFICATION adapter-initiated "command" *******************/ +/* Bitmask for entry->change_code. Both bits may be raised. */ +enum qeth_ipa_addr_change_code { + IPA_ADDR_CHANGE_CODE_VLANID = 0x01, + IPA_ADDR_CHANGE_CODE_MACADDR = 0x02, + IPA_ADDR_CHANGE_CODE_REMOVAL = 0x80, /* else addition */ +}; +enum qeth_ipa_addr_change_retcode { + IPA_ADDR_CHANGE_RETCODE_OK = 0x0000, + IPA_ADDR_CHANGE_RETCODE_LOSTEVENTS = 0x0010, +}; +enum qeth_ipa_addr_change_lostmask { + IPA_ADDR_CHANGE_MASK_OVERFLOW = 0x01, + IPA_ADDR_CHANGE_MASK_STATECHANGE = 0x02, +}; + +struct qeth_ipacmd_addr_change_entry { + struct net_if_token token; + struct mac_addr_lnid addr_lnid; + __u8 change_code; + __u8 reserved1; + __u16 reserved2; +} __packed; + +struct qeth_ipacmd_addr_change { + __u8 lost_event_mask; + __u8 reserved; + __u16 num_entries; + struct qeth_ipacmd_addr_change_entry entry[]; +} __packed; + /* Header for each IPA command */ struct qeth_ipacmd_hdr { __u8 command; @@ -613,6 +650,7 @@ struct qeth_ipa_cmd { struct qeth_set_routing setrtg; struct qeth_ipacmd_diagass diagass; struct qeth_ipacmd_setbridgeport sbp; + struct qeth_ipacmd_addr_change addrchange; } data; } __attribute__ ((packed)); diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index 875d080..914d2c1 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -1354,6 +1354,71 @@ EXPORT_SYMBOL(qeth_osn_deregister); /* SETBRIDGEPORT support, async notifications */ +enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset}; + +/** + * qeth_bridge_emit_host_event() - bridgeport address change notification + * @card: qeth_card structure pointer, for udev events. + * @evtype: "normal" register/unregister, or abort, or reset. For abort + * and reset token and addr_lnid are unused and may be NULL. + * @code: event bitmask: high order bit 0x80 value 1 means removal of an + * object, 0 - addition of an object. + * 0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC. + * @token: "network token" structure identifying physical address of the port. + * @addr_lnid: pointer to structure with MAC address and VLAN ID. + * + * This function is called when registrations and deregistrations are + * reported by the hardware, and also when notifications are enabled - + * for all currently registered addresses. + */ +static void qeth_bridge_emit_host_event(struct qeth_card *card, + enum qeth_an_event_type evtype, + u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid) +{ + char str[7][32]; + char *env[8]; + int i = 0; + + switch (evtype) { + case anev_reg_unreg: + snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s", + (code & IPA_ADDR_CHANGE_CODE_REMOVAL) + ? "deregister" : "register"); + env[i] = str[i]; i++; + if (code & IPA_ADDR_CHANGE_CODE_VLANID) { + snprintf(str[i], sizeof(str[i]), "VLAN=%d", + addr_lnid->lnid); + env[i] = str[i]; i++; + } + if (code & IPA_ADDR_CHANGE_CODE_MACADDR) { + snprintf(str[i], sizeof(str[i]), "MAC=%pM6", + &addr_lnid->mac); + env[i] = str[i]; i++; + } + snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x", + token->cssid, token->ssid, token->devnum); + env[i] = str[i]; i++; + snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid); + env[i] = str[i]; i++; + snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x", + token->chpid); + env[i] = str[i]; i++; + snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid); + env[i] = str[i]; i++; + break; + case anev_abort: + snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort"); + env[i] = str[i]; i++; + break; + case anev_reset: + snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset"); + env[i] = str[i]; i++; + break; + } + env[i] = NULL; + kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env); +} + struct qeth_bridge_state_data { struct work_struct worker; struct qeth_card *card; @@ -1425,6 +1490,78 @@ void qeth_bridge_state_change(struct qeth_card *card, struct qeth_ipa_cmd *cmd) } EXPORT_SYMBOL(qeth_bridge_state_change); +struct qeth_bridge_host_data { + struct work_struct worker; + struct qeth_card *card; + struct qeth_ipacmd_addr_change hostevs; +}; + +static void qeth_bridge_host_event_worker(struct work_struct *work) +{ + struct qeth_bridge_host_data *data = + container_of(work, struct qeth_bridge_host_data, worker); + int i; + + if (data->hostevs.lost_event_mask) { + dev_info(&data->card->gdev->dev, +"Address notification from the HiperSockets Bridge Port stopped %s (%s)\n", + data->card->dev->name, + (data->hostevs.lost_event_mask == 0x01) + ? "Overflow" + : (data->hostevs.lost_event_mask == 0x02) + ? "Bridge port state change" + : "Unknown reason"); + mutex_lock(&data->card->conf_mutex); + data->card->options.sbp.hostnotification = 0; + mutex_unlock(&data->card->conf_mutex); + qeth_bridge_emit_host_event(data->card, anev_abort, + 0, NULL, NULL); + } else + for (i = 0; i < data->hostevs.num_entries; i++) { + struct qeth_ipacmd_addr_change_entry *entry = + &data->hostevs.entry[i]; + qeth_bridge_emit_host_event(data->card, + anev_reg_unreg, + entry->change_code, + &entry->token, &entry->addr_lnid); + } + kfree(data); +} + +void qeth_bridge_host_event(struct qeth_card *card, struct qeth_ipa_cmd *cmd) +{ + struct qeth_ipacmd_addr_change *hostevs = + &cmd->data.addrchange; + struct qeth_bridge_host_data *data; + int extrasize; + + QETH_CARD_TEXT(card, 2, "brhostev"); + if (cmd->hdr.return_code != 0x0000) { + if (cmd->hdr.return_code == 0x0010) { + if (hostevs->lost_event_mask == 0x00) + hostevs->lost_event_mask = 0xff; + } else { + QETH_CARD_TEXT_(card, 2, "BPHe%04x", + cmd->hdr.return_code); + return; + } + } + extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) * + hostevs->num_entries; + data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize, + GFP_ATOMIC); + if (!data) { + QETH_CARD_TEXT(card, 2, "BPHalloc"); + return; + } + INIT_WORK(&data->worker, qeth_bridge_host_event_worker); + data->card = card; + memcpy(&data->hostevs, hostevs, + sizeof(struct qeth_ipacmd_addr_change) + extrasize); + queue_work(qeth_wq, &data->worker); +} +EXPORT_SYMBOL(qeth_bridge_host_event); + /* SETBRIDGEPORT support; sending commands */ struct _qeth_sbp_cbctl { @@ -1711,6 +1848,99 @@ int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role) return rc; } +/** + * qeth_anset_makerc() - derive "traditional" error from hardware codes. + * @card: qeth_card structure pointer, for debug messages. + * + * Returns negative errno-compatible error indication or 0 on success. + */ +static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response) +{ + int rc; + + if (pnso_rc == 0) + switch (response) { + case 0x0001: + rc = 0; + break; + case 0x0004: + case 0x0100: + case 0x0106: + rc = -ENOSYS; + dev_err(&card->gdev->dev, + "Setting address notification failed\n"); + break; + case 0x0107: + rc = -EAGAIN; + break; + default: + rc = -EIO; + } + else + rc = -EIO; + + if (rc) { + QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc); + QETH_CARD_TEXT_(card, 2, "SBPr%04x", response); + } + return rc; +} + +static void qeth_bridgeport_an_set_cb(void *priv, + enum qdio_brinfo_entry_type type, void *entry) +{ + struct qeth_card *card = (struct qeth_card *)priv; + struct qdio_brinfo_entry_l2 *l2entry; + u8 code; + + if (type != l2_addr_lnid) { + WARN_ON_ONCE(1); + return; + } + + l2entry = (struct qdio_brinfo_entry_l2 *)entry; + code = IPA_ADDR_CHANGE_CODE_MACADDR; + if (l2entry->addr_lnid.lnid) + code |= IPA_ADDR_CHANGE_CODE_VLANID; + qeth_bridge_emit_host_event(card, anev_reg_unreg, code, + (struct net_if_token *)&l2entry->nit, + (struct mac_addr_lnid *)&l2entry->addr_lnid); +} + +/** + * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification + * @card: qeth_card structure pointer. + * @enable: 0 - disable, non-zero - enable notifications + * + * Returns negative errno-compatible error indication or 0 on success. + * + * On enable, emits a series of address notifications udev events for all + * currently registered hosts. + */ +int qeth_bridgeport_an_set(struct qeth_card *card, int enable) +{ + int rc; + u16 response; + struct ccw_device *ddev; + struct subchannel_id schid; + + if (!card) + return -EINVAL; + if (!card->options.sbp.supported_funcs) + return -EOPNOTSUPP; + ddev = CARD_DDEV(card); + ccw_device_get_schid(ddev, &schid); + + if (enable) { + qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL); + rc = qdio_pnso_brinfo(schid, 1, &response, + qeth_bridgeport_an_set_cb, card); + } else + rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL); + return qeth_anset_makerc(card, rc, response); +} +EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set); + module_init(qeth_l2_init); module_exit(qeth_l2_exit); MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); diff --git a/drivers/s390/net/qeth_l2_sys.c b/drivers/s390/net/qeth_l2_sys.c index 17fd4cd..ae1bc04 100644 --- a/drivers/s390/net/qeth_l2_sys.c +++ b/drivers/s390/net/qeth_l2_sys.c @@ -119,9 +119,63 @@ static ssize_t qeth_bridge_port_state_show(struct device *dev, static DEVICE_ATTR(bridge_state, 0644, qeth_bridge_port_state_show, NULL); +static ssize_t qeth_bridgeport_hostnotification_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qeth_card *card = dev_get_drvdata(dev); + int enabled; + + if (!card) + return -EINVAL; + + mutex_lock(&card->conf_mutex); + + enabled = card->options.sbp.hostnotification; + + mutex_unlock(&card->conf_mutex); + + return sprintf(buf, "%d\n", enabled); +} + +static ssize_t qeth_bridgeport_hostnotification_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct qeth_card *card = dev_get_drvdata(dev); + int rc = 0; + int enable; + + if (!card) + return -EINVAL; + + if (sysfs_streq(buf, "0")) + enable = 0; + else if (sysfs_streq(buf, "1")) + enable = 1; + else + return -EINVAL; + + mutex_lock(&card->conf_mutex); + + if (qeth_card_hw_is_reachable(card)) { + rc = qeth_bridgeport_an_set(card, enable); + if (!rc) + card->options.sbp.hostnotification = enable; + } else + card->options.sbp.hostnotification = enable; + + mutex_unlock(&card->conf_mutex); + + return rc ? rc : count; +} + +static DEVICE_ATTR(bridge_hostnotify, 0644, + qeth_bridgeport_hostnotification_show, + qeth_bridgeport_hostnotification_store); + static struct attribute *qeth_l2_bridgeport_attrs[] = { &dev_attr_bridge_role.attr, &dev_attr_bridge_state.attr, + &dev_attr_bridge_hostnotify.attr, NULL, }; @@ -147,6 +201,8 @@ void qeth_l2_remove_device_attributes(struct device *dev) */ void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card) { + int rc; + if (!card) return; if (!card->options.sbp.supported_funcs) @@ -158,4 +214,10 @@ void qeth_l2_setup_bridgeport_attrs(struct qeth_card *card) qeth_bridgeport_query_ports(card, &card->options.sbp.role, NULL); } + if (card->options.sbp.hostnotification) { + rc = qeth_bridgeport_an_set(card, 1); + if (rc) + card->options.sbp.hostnotification = 0; + } else + qeth_bridgeport_an_set(card, 0); } |
