diff options
Diffstat (limited to 'drivers/net/ethernet/ibm/ibmvnic.c')
| -rw-r--r-- | drivers/net/ethernet/ibm/ibmvnic.c | 310 |
1 files changed, 258 insertions, 52 deletions
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index 6e8d6a6f6aaf..ffe7acbeaa22 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -109,13 +109,14 @@ static union sub_crq *ibmvnic_next_scrq(struct ibmvnic_adapter *, struct ibmvnic_sub_crq_queue *); static int ibmvnic_poll(struct napi_struct *napi, int data); static void send_map_query(struct ibmvnic_adapter *adapter); -static void send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8); -static void send_request_unmap(struct ibmvnic_adapter *, u8); +static int send_request_map(struct ibmvnic_adapter *, dma_addr_t, __be32, u8); +static int send_request_unmap(struct ibmvnic_adapter *, u8); static int send_login(struct ibmvnic_adapter *adapter); static void send_cap_queries(struct ibmvnic_adapter *adapter); static int init_sub_crqs(struct ibmvnic_adapter *); static int init_sub_crq_irqs(struct ibmvnic_adapter *adapter); static int ibmvnic_init(struct ibmvnic_adapter *); +static int ibmvnic_reset_init(struct ibmvnic_adapter *); static void release_crq_queue(struct ibmvnic_adapter *); static int __ibmvnic_set_mac(struct net_device *netdev, struct sockaddr *p); static int init_crq_queue(struct ibmvnic_adapter *adapter); @@ -172,6 +173,7 @@ static int alloc_long_term_buff(struct ibmvnic_adapter *adapter, struct ibmvnic_long_term_buff *ltb, int size) { struct device *dev = &adapter->vdev->dev; + int rc; ltb->size = size; ltb->buff = dma_alloc_coherent(dev, ltb->size, <b->addr, @@ -185,13 +187,18 @@ static int alloc_long_term_buff(struct ibmvnic_adapter *adapter, adapter->map_id++; init_completion(&adapter->fw_done); - send_request_map(adapter, ltb->addr, - ltb->size, ltb->map_id); + rc = send_request_map(adapter, ltb->addr, + ltb->size, ltb->map_id); + if (rc) { + dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); + return rc; + } wait_for_completion(&adapter->fw_done); if (adapter->fw_done_rc) { dev_err(dev, "Couldn't map long term buffer,rc = %d\n", adapter->fw_done_rc); + dma_free_coherent(dev, ltb->size, ltb->buff, ltb->addr); return -1; } return 0; @@ -214,10 +221,14 @@ static void free_long_term_buff(struct ibmvnic_adapter *adapter, static int reset_long_term_buff(struct ibmvnic_adapter *adapter, struct ibmvnic_long_term_buff *ltb) { + int rc; + memset(ltb->buff, 0, ltb->size); init_completion(&adapter->fw_done); - send_request_map(adapter, ltb->addr, ltb->size, ltb->map_id); + rc = send_request_map(adapter, ltb->addr, ltb->size, ltb->map_id); + if (rc) + return rc; wait_for_completion(&adapter->fw_done); if (adapter->fw_done_rc) { @@ -318,7 +329,8 @@ static void replenish_rx_pool(struct ibmvnic_adapter *adapter, return; failure: - dev_info(dev, "replenish pools failure\n"); + if (lpar_rc != H_PARAMETER && lpar_rc != H_CLOSED) + dev_err_ratelimited(dev, "rx: replenish packet buffer failed\n"); pool->free_map[pool->next_free] = index; pool->rx_buff[index].skb = NULL; @@ -788,6 +800,7 @@ static void release_napi(struct ibmvnic_adapter *adapter) kfree(adapter->napi); adapter->napi = NULL; adapter->num_active_rx_napi = 0; + adapter->napi_enabled = false; } static int ibmvnic_login(struct net_device *netdev) @@ -795,9 +808,11 @@ static int ibmvnic_login(struct net_device *netdev) struct ibmvnic_adapter *adapter = netdev_priv(netdev); unsigned long timeout = msecs_to_jiffies(30000); int retry_count = 0; + bool retry; int rc; do { + retry = false; if (retry_count > IBMVNIC_MAX_QUEUES) { netdev_warn(netdev, "Login attempts exceeded\n"); return -1; @@ -821,6 +836,9 @@ static int ibmvnic_login(struct net_device *netdev) retry_count++; release_sub_crqs(adapter, 1); + retry = true; + netdev_dbg(netdev, + "Received partial success, retrying...\n"); adapter->init_done_rc = 0; reinit_completion(&adapter->init_done); send_cap_queries(adapter); @@ -848,7 +866,7 @@ static int ibmvnic_login(struct net_device *netdev) netdev_warn(netdev, "Adapter login failed\n"); return -1; } - } while (adapter->init_done_rc == PARTIALSUCCESS); + } while (retry); /* handle pending MAC address changes after successful login */ if (adapter->mac_change_pending) { @@ -918,6 +936,10 @@ static int set_link_state(struct ibmvnic_adapter *adapter, u8 link_state) /* Partuial success, delay and re-send */ mdelay(1000); resend = true; + } else if (adapter->init_done_rc) { + netdev_warn(netdev, "Unable to set link state, rc=%d\n", + adapter->init_done_rc); + return adapter->init_done_rc; } } while (resend); @@ -950,6 +972,7 @@ static int ibmvnic_get_vpd(struct ibmvnic_adapter *adapter) struct device *dev = &adapter->vdev->dev; union ibmvnic_crq crq; int len = 0; + int rc; if (adapter->vpd->buff) len = adapter->vpd->len; @@ -957,7 +980,9 @@ static int ibmvnic_get_vpd(struct ibmvnic_adapter *adapter) init_completion(&adapter->fw_done); crq.get_vpd_size.first = IBMVNIC_CRQ_CMD; crq.get_vpd_size.cmd = GET_VPD_SIZE; - ibmvnic_send_crq(adapter, &crq); + rc = ibmvnic_send_crq(adapter, &crq); + if (rc) + return rc; wait_for_completion(&adapter->fw_done); if (!adapter->vpd->len) @@ -990,7 +1015,12 @@ static int ibmvnic_get_vpd(struct ibmvnic_adapter *adapter) crq.get_vpd.cmd = GET_VPD; crq.get_vpd.ioba = cpu_to_be32(adapter->vpd->dma_addr); crq.get_vpd.len = cpu_to_be32((u32)adapter->vpd->len); - ibmvnic_send_crq(adapter, &crq); + rc = ibmvnic_send_crq(adapter, &crq); + if (rc) { + kfree(adapter->vpd->buff); + adapter->vpd->buff = NULL; + return rc; + } wait_for_completion(&adapter->fw_done); return 0; @@ -1588,7 +1618,8 @@ static int ibmvnic_xmit(struct sk_buff *skb, struct net_device *netdev) &tx_crq); } if (lpar_rc != H_SUCCESS) { - dev_err(dev, "tx failed with code %ld\n", lpar_rc); + if (lpar_rc != H_CLOSED && lpar_rc != H_PARAMETER) + dev_err_ratelimited(dev, "tx: send failed\n"); dev_kfree_skb_any(skb); tx_buff->skb = NULL; @@ -1689,6 +1720,7 @@ static int __ibmvnic_set_mac(struct net_device *netdev, struct sockaddr *p) struct ibmvnic_adapter *adapter = netdev_priv(netdev); struct sockaddr *addr = p; union ibmvnic_crq crq; + int rc; if (!is_valid_ether_addr(addr->sa_data)) return -EADDRNOTAVAIL; @@ -1699,7 +1731,9 @@ static int __ibmvnic_set_mac(struct net_device *netdev, struct sockaddr *p) ether_addr_copy(&crq.change_mac_addr.mac_addr[0], addr->sa_data); init_completion(&adapter->fw_done); - ibmvnic_send_crq(adapter, &crq); + rc = ibmvnic_send_crq(adapter, &crq); + if (rc) + return rc; wait_for_completion(&adapter->fw_done); /* netdev->dev_addr is changed in handle_change_mac_rsp function */ return adapter->fw_done_rc ? -EIO : 0; @@ -1781,7 +1815,7 @@ static int do_reset(struct ibmvnic_adapter *adapter, return rc; } - rc = ibmvnic_init(adapter); + rc = ibmvnic_reset_init(adapter); if (rc) return IBMVNIC_INIT_FAILED; @@ -1793,8 +1827,8 @@ static int do_reset(struct ibmvnic_adapter *adapter, rc = ibmvnic_login(netdev); if (rc) { - adapter->state = VNIC_PROBED; - return 0; + adapter->state = reset_state; + return rc; } if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM || @@ -1821,9 +1855,8 @@ static int do_reset(struct ibmvnic_adapter *adapter, if (rc) return rc; } + ibmvnic_disable_irqs(adapter); } - - ibmvnic_disable_irqs(adapter); adapter->state = VNIC_CLOSED; if (reset_state == VNIC_CLOSED) @@ -1852,6 +1885,85 @@ static int do_reset(struct ibmvnic_adapter *adapter, return 0; } +static int do_hard_reset(struct ibmvnic_adapter *adapter, + struct ibmvnic_rwi *rwi, u32 reset_state) +{ + struct net_device *netdev = adapter->netdev; + int rc; + + netdev_dbg(adapter->netdev, "Hard resetting driver (%d)\n", + rwi->reset_reason); + + netif_carrier_off(netdev); + adapter->reset_reason = rwi->reset_reason; + + ibmvnic_cleanup(netdev); + release_resources(adapter); + release_sub_crqs(adapter, 0); + release_crq_queue(adapter); + + /* remove the closed state so when we call open it appears + * we are coming from the probed state. + */ + adapter->state = VNIC_PROBED; + + rc = init_crq_queue(adapter); + if (rc) { + netdev_err(adapter->netdev, + "Couldn't initialize crq. rc=%d\n", rc); + return rc; + } + + rc = ibmvnic_init(adapter); + if (rc) + return rc; + + /* If the adapter was in PROBE state prior to the reset, + * exit here. + */ + if (reset_state == VNIC_PROBED) + return 0; + + rc = ibmvnic_login(netdev); + if (rc) { + adapter->state = VNIC_PROBED; + return 0; + } + /* netif_set_real_num_xx_queues needs to take rtnl lock here + * unless wait_for_reset is set, in which case the rtnl lock + * has already been taken before initializing the reset + */ + if (!adapter->wait_for_reset) { + rtnl_lock(); + rc = init_resources(adapter); + rtnl_unlock(); + } else { + rc = init_resources(adapter); + } + if (rc) + return rc; + + ibmvnic_disable_irqs(adapter); + adapter->state = VNIC_CLOSED; + + if (reset_state == VNIC_CLOSED) + return 0; + + rc = __ibmvnic_open(netdev); + if (rc) { + if (list_empty(&adapter->rwi_list)) + adapter->state = VNIC_CLOSED; + else + adapter->state = reset_state; + + return 0; + } + + netif_carrier_on(netdev); + + return 0; +} + static struct ibmvnic_rwi *get_next_rwi(struct ibmvnic_adapter *adapter) { struct ibmvnic_rwi *rwi; @@ -1893,14 +2005,19 @@ static void __ibmvnic_reset(struct work_struct *work) netdev = adapter->netdev; mutex_lock(&adapter->reset_lock); - adapter->resetting = true; reset_state = adapter->state; rwi = get_next_rwi(adapter); while (rwi) { - rc = do_reset(adapter, rwi, reset_state); + if (adapter->force_reset_recovery) { + adapter->force_reset_recovery = false; + rc = do_hard_reset(adapter, rwi, reset_state); + } else { + rc = do_reset(adapter, rwi, reset_state); + } kfree(rwi); - if (rc && rc != IBMVNIC_INIT_FAILED) + if (rc && rc != IBMVNIC_INIT_FAILED && + !adapter->force_reset_recovery) break; rwi = get_next_rwi(adapter); @@ -1926,9 +2043,9 @@ static void __ibmvnic_reset(struct work_struct *work) static int ibmvnic_reset(struct ibmvnic_adapter *adapter, enum ibmvnic_reset_reason reason) { + struct list_head *entry, *tmp_entry; struct ibmvnic_rwi *rwi, *tmp; struct net_device *netdev = adapter->netdev; - struct list_head *entry; int ret; if (adapter->state == VNIC_REMOVING || @@ -1964,11 +2081,17 @@ static int ibmvnic_reset(struct ibmvnic_adapter *adapter, ret = ENOMEM; goto err; } - + /* if we just received a transport event, + * flush reset queue and process this reset + */ + if (adapter->force_reset_recovery && !list_empty(&adapter->rwi_list)) { + list_for_each_safe(entry, tmp_entry, &adapter->rwi_list) + list_del(entry); + } rwi->reset_reason = reason; list_add_tail(&rwi->list, &adapter->rwi_list); mutex_unlock(&adapter->rwi_lock); - + adapter->resetting = true; netdev_dbg(adapter->netdev, "Scheduling reset (reason %d)\n", reason); schedule_work(&adapter->ibmvnic_reset); @@ -2364,6 +2487,7 @@ static void ibmvnic_get_ethtool_stats(struct net_device *dev, struct ibmvnic_adapter *adapter = netdev_priv(dev); union ibmvnic_crq crq; int i, j; + int rc; memset(&crq, 0, sizeof(crq)); crq.request_statistics.first = IBMVNIC_CRQ_CMD; @@ -2374,7 +2498,9 @@ static void ibmvnic_get_ethtool_stats(struct net_device *dev, /* Wait for data to be written */ init_completion(&adapter->stats_done); - ibmvnic_send_crq(adapter, &crq); + rc = ibmvnic_send_crq(adapter, &crq); + if (rc) + return; wait_for_completion(&adapter->stats_done); for (i = 0; i < ARRAY_SIZE(ibmvnic_stats); i++) @@ -2617,18 +2743,21 @@ static int enable_scrq_irq(struct ibmvnic_adapter *adapter, { struct device *dev = &adapter->vdev->dev; unsigned long rc; - u64 val; if (scrq->hw_irq > 0x100000000ULL) { dev_err(dev, "bad hw_irq = %lx\n", scrq->hw_irq); return 1; } - val = (0xff000000) | scrq->hw_irq; - rc = plpar_hcall_norets(H_EOI, val); - if (rc) - dev_err(dev, "H_EOI FAILED irq 0x%llx. rc=%ld\n", - val, rc); + if (adapter->resetting && + adapter->reset_reason == VNIC_RESET_MOBILITY) { + u64 val = (0xff000000) | scrq->hw_irq; + + rc = plpar_hcall_norets(H_EOI, val); + if (rc) + dev_err(dev, "H_EOI FAILED irq 0x%llx. rc=%ld\n", + val, rc); + } rc = plpar_hcall_norets(H_VIOCTL, adapter->vdev->unit_address, H_ENABLE_VIO_INTERRUPT, scrq->hw_irq, 0, 0); @@ -3077,6 +3206,25 @@ static union ibmvnic_crq *ibmvnic_next_crq(struct ibmvnic_adapter *adapter) return crq; } +static void print_subcrq_error(struct device *dev, int rc, const char *func) +{ + switch (rc) { + case H_PARAMETER: + dev_warn_ratelimited(dev, + "%s failed: Send request is malformed or adapter failover pending. (rc=%d)\n", + func, rc); + break; + case H_CLOSED: + dev_warn_ratelimited(dev, + "%s failed: Backing queue closed. Adapter is down or failover pending. (rc=%d)\n", + func, rc); + break; + default: + dev_err_ratelimited(dev, "%s failed: (rc=%d)\n", func, rc); + break; + } +} + static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, union sub_crq *sub_crq) { @@ -3103,11 +3251,8 @@ static int send_subcrq(struct ibmvnic_adapter *adapter, u64 remote_handle, cpu_to_be64(u64_crq[2]), cpu_to_be64(u64_crq[3])); - if (rc) { - if (rc == H_CLOSED) - dev_warn(dev, "CRQ Queue closed\n"); - dev_err(dev, "Send error (rc=%d)\n", rc); - } + if (rc) + print_subcrq_error(dev, rc, __func__); return rc; } @@ -3125,11 +3270,8 @@ static int send_subcrq_indirect(struct ibmvnic_adapter *adapter, cpu_to_be64(remote_handle), ioba, num_entries); - if (rc) { - if (rc == H_CLOSED) - dev_warn(dev, "CRQ Queue closed\n"); - dev_err(dev, "Send (indirect) error (rc=%d)\n", rc); - } + if (rc) + print_subcrq_error(dev, rc, __func__); return rc; } @@ -3146,6 +3288,12 @@ static int ibmvnic_send_crq(struct ibmvnic_adapter *adapter, (unsigned long int)cpu_to_be64(u64_crq[0]), (unsigned long int)cpu_to_be64(u64_crq[1])); + if (!adapter->crq.active && + crq->generic.first != IBMVNIC_CRQ_INIT_CMD) { + dev_warn(dev, "Invalid request detected while CRQ is inactive, possible device state change during reset\n"); + return -EINVAL; + } + /* Make sure the hypervisor sees the complete request */ mb(); @@ -3370,8 +3518,8 @@ buf_alloc_failed: return -1; } -static void send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr, - u32 len, u8 map_id) +static int send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr, + u32 len, u8 map_id) { union ibmvnic_crq crq; @@ -3381,10 +3529,10 @@ static void send_request_map(struct ibmvnic_adapter *adapter, dma_addr_t addr, crq.request_map.map_id = map_id; crq.request_map.ioba = cpu_to_be32(addr); crq.request_map.len = cpu_to_be32(len); - ibmvnic_send_crq(adapter, &crq); + return ibmvnic_send_crq(adapter, &crq); } -static void send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id) +static int send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id) { union ibmvnic_crq crq; @@ -3392,7 +3540,7 @@ static void send_request_unmap(struct ibmvnic_adapter *adapter, u8 map_id) crq.request_unmap.first = IBMVNIC_CRQ_CMD; crq.request_unmap.cmd = REQUEST_UNMAP; crq.request_unmap.map_id = map_id; - ibmvnic_send_crq(adapter, &crq); + return ibmvnic_send_crq(adapter, &crq); } static void send_map_query(struct ibmvnic_adapter *adapter) @@ -4219,11 +4367,15 @@ static void ibmvnic_handle_crq(union ibmvnic_crq *crq, dev_info(dev, "Partner initialized\n"); adapter->from_passive_init = true; adapter->failover_pending = false; - complete(&adapter->init_done); + if (!completion_done(&adapter->init_done)) { + complete(&adapter->init_done); + adapter->init_done_rc = -EIO; + } ibmvnic_reset(adapter, VNIC_RESET_FAILOVER); break; case IBMVNIC_CRQ_INIT_COMPLETE: dev_info(dev, "Partner initialization complete\n"); + adapter->crq.active = true; send_version_xchg(adapter); break; default: @@ -4232,6 +4384,9 @@ static void ibmvnic_handle_crq(union ibmvnic_crq *crq, return; case IBMVNIC_CRQ_XPORT_EVENT: netif_carrier_off(netdev); + adapter->crq.active = false; + if (adapter->resetting) + adapter->force_reset_recovery = true; if (gen_crq->cmd == IBMVNIC_PARTITION_MIGRATED) { dev_info(dev, "Migrated, re-enabling adapter\n"); ibmvnic_reset(adapter, VNIC_RESET_MOBILITY); @@ -4419,6 +4574,7 @@ static int ibmvnic_reset_crq(struct ibmvnic_adapter *adapter) /* Clean out the queue */ memset(crq->msgs, 0, PAGE_SIZE); crq->cur = 0; + crq->active = false; /* And re-open it again */ rc = plpar_hcall_norets(H_REG_CRQ, vdev->unit_address, @@ -4453,6 +4609,7 @@ static void release_crq_queue(struct ibmvnic_adapter *adapter) DMA_BIDIRECTIONAL); free_page((unsigned long)crq->msgs); crq->msgs = NULL; + crq->active = false; } static int init_crq_queue(struct ibmvnic_adapter *adapter) @@ -4530,7 +4687,7 @@ map_failed: return retrc; } -static int ibmvnic_init(struct ibmvnic_adapter *adapter) +static int ibmvnic_reset_init(struct ibmvnic_adapter *adapter) { struct device *dev = &adapter->vdev->dev; unsigned long timeout = msecs_to_jiffies(30000); @@ -4586,13 +4743,48 @@ static int ibmvnic_init(struct ibmvnic_adapter *adapter) release_crq_queue(adapter); } - rc = init_stats_buffers(adapter); - if (rc) - return rc; + return rc; +} - rc = init_stats_token(adapter); - if (rc) +static int ibmvnic_init(struct ibmvnic_adapter *adapter) +{ + struct device *dev = &adapter->vdev->dev; + unsigned long timeout = msecs_to_jiffies(30000); + int rc; + + adapter->from_passive_init = false; + + init_completion(&adapter->init_done); + adapter->init_done_rc = 0; + ibmvnic_send_crq_init(adapter); + if (!wait_for_completion_timeout(&adapter->init_done, timeout)) { + dev_err(dev, "Initialization sequence timed out\n"); + return -1; + } + + if (adapter->init_done_rc) { + release_crq_queue(adapter); + return adapter->init_done_rc; + } + + if (adapter->from_passive_init) { + adapter->state = VNIC_OPEN; + adapter->from_passive_init = false; + return -1; + } + + rc = init_sub_crqs(adapter); + if (rc) { + dev_err(dev, "Initialization of sub crqs failed\n"); + release_crq_queue(adapter); return rc; + } + + rc = init_sub_crq_irqs(adapter); + if (rc) { + dev_err(dev, "Failed to initialize sub crq irqs\n"); + release_crq_queue(adapter); + } return rc; } @@ -4662,13 +4854,21 @@ static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) goto ibmvnic_init_fail; } while (rc == EAGAIN); + rc = init_stats_buffers(adapter); + if (rc) + goto ibmvnic_init_fail; + + rc = init_stats_token(adapter); + if (rc) + goto ibmvnic_stats_fail; + netdev->mtu = adapter->req_mtu - ETH_HLEN; netdev->min_mtu = adapter->min_mtu - ETH_HLEN; netdev->max_mtu = adapter->max_mtu - ETH_HLEN; rc = device_create_file(&dev->dev, &dev_attr_failover); if (rc) - goto ibmvnic_init_fail; + goto ibmvnic_dev_file_err; netif_carrier_off(netdev); rc = register_netdev(netdev); @@ -4687,6 +4887,12 @@ static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) ibmvnic_register_fail: device_remove_file(&dev->dev, &dev_attr_failover); +ibmvnic_dev_file_err: + release_stats_token(adapter); + +ibmvnic_stats_fail: + release_stats_buffers(adapter); + ibmvnic_init_fail: release_sub_crqs(adapter, 1); release_crq_queue(adapter); |
