diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/ibm/ibmvnic.c | 213 | ||||
| -rw-r--r-- | drivers/net/ethernet/ibm/ibmvnic.h | 24 |
2 files changed, 209 insertions, 28 deletions
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index 11eba8277132..3d0280196fdc 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -115,6 +115,7 @@ 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 void release_crq_queue(struct ibmvnic_adapter *); +static int __ibmvnic_set_mac(struct net_device *netdev, struct sockaddr *p); struct ibmvnic_stat { char name[ETH_GSTRING_LEN]; @@ -926,6 +927,11 @@ static int ibmvnic_open(struct net_device *netdev) mutex_lock(&adapter->reset_lock); + if (adapter->mac_change_pending) { + __ibmvnic_set_mac(netdev, &adapter->desired.mac); + adapter->mac_change_pending = false; + } + if (adapter->state != VNIC_CLOSED) { rc = ibmvnic_login(netdev); if (rc) { @@ -1426,7 +1432,7 @@ static void ibmvnic_set_multi(struct net_device *netdev) } } -static int ibmvnic_set_mac(struct net_device *netdev, void *p) +static int __ibmvnic_set_mac(struct net_device *netdev, struct sockaddr *p) { struct ibmvnic_adapter *adapter = netdev_priv(netdev); struct sockaddr *addr = p; @@ -1444,6 +1450,22 @@ static int ibmvnic_set_mac(struct net_device *netdev, void *p) return 0; } +static int ibmvnic_set_mac(struct net_device *netdev, void *p) +{ + struct ibmvnic_adapter *adapter = netdev_priv(netdev); + struct sockaddr *addr = p; + + if (adapter->state != VNIC_OPEN) { + memcpy(&adapter->desired.mac, addr, sizeof(struct sockaddr)); + adapter->mac_change_pending = true; + return 0; + } + + __ibmvnic_set_mac(netdev, addr); + + return 0; +} + /** * do_reset returns zero if we are able to keep processing reset events, or * non-zero if we hit a fatal error and must halt. @@ -1470,6 +1492,13 @@ static int do_reset(struct ibmvnic_adapter *adapter, if (rc) return rc; + if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM || + adapter->wait_for_reset) { + release_resources(adapter); + release_sub_crqs(adapter); + release_crq_queue(adapter); + } + if (adapter->reset_reason != VNIC_RESET_NON_FATAL) { /* remove the closed state so when we call open it appears * we are coming from the probed state. @@ -1492,16 +1521,23 @@ static int do_reset(struct ibmvnic_adapter *adapter, return 0; } - rc = reset_tx_pools(adapter); - if (rc) - return rc; + if (adapter->reset_reason == VNIC_RESET_CHANGE_PARAM || + adapter->wait_for_reset) { + rc = init_resources(adapter); + if (rc) + return rc; + } else { + rc = reset_tx_pools(adapter); + if (rc) + return rc; - rc = reset_rx_pools(adapter); - if (rc) - return rc; + rc = reset_rx_pools(adapter); + if (rc) + return rc; - if (reset_state == VNIC_CLOSED) - return 0; + if (reset_state == VNIC_CLOSED) + return 0; + } } rc = __ibmvnic_open(netdev); @@ -1561,7 +1597,7 @@ static void __ibmvnic_reset(struct work_struct *work) struct ibmvnic_adapter *adapter; struct net_device *netdev; u32 reset_state; - int rc; + int rc = 0; adapter = container_of(work, struct ibmvnic_adapter, ibmvnic_reset); netdev = adapter->netdev; @@ -1580,6 +1616,12 @@ static void __ibmvnic_reset(struct work_struct *work) rwi = get_next_rwi(adapter); } + if (adapter->wait_for_reset) { + adapter->wait_for_reset = false; + adapter->reset_done_rc = rc; + complete(&adapter->reset_done); + } + if (rc) { netdev_dbg(adapter->netdev, "Reset failed\n"); free_all_rwi(adapter); @@ -1759,9 +1801,42 @@ static void ibmvnic_netpoll_controller(struct net_device *dev) } #endif +static int wait_for_reset(struct ibmvnic_adapter *adapter) +{ + adapter->fallback.mtu = adapter->req_mtu; + adapter->fallback.rx_queues = adapter->req_rx_queues; + adapter->fallback.tx_queues = adapter->req_tx_queues; + adapter->fallback.rx_entries = adapter->req_rx_add_entries_per_subcrq; + adapter->fallback.tx_entries = adapter->req_tx_entries_per_subcrq; + + init_completion(&adapter->reset_done); + ibmvnic_reset(adapter, VNIC_RESET_CHANGE_PARAM); + adapter->wait_for_reset = true; + wait_for_completion(&adapter->reset_done); + + if (adapter->reset_done_rc) { + adapter->desired.mtu = adapter->fallback.mtu; + adapter->desired.rx_queues = adapter->fallback.rx_queues; + adapter->desired.tx_queues = adapter->fallback.tx_queues; + adapter->desired.rx_entries = adapter->fallback.rx_entries; + adapter->desired.tx_entries = adapter->fallback.tx_entries; + + init_completion(&adapter->reset_done); + ibmvnic_reset(adapter, VNIC_RESET_CHANGE_PARAM); + wait_for_completion(&adapter->reset_done); + } + adapter->wait_for_reset = false; + + return adapter->reset_done_rc; +} + static int ibmvnic_change_mtu(struct net_device *netdev, int new_mtu) { - return -EOPNOTSUPP; + struct ibmvnic_adapter *adapter = netdev_priv(netdev); + + adapter->desired.mtu = new_mtu + ETH_HLEN; + + return wait_for_reset(adapter); } static const struct net_device_ops ibmvnic_netdev_ops = { @@ -1849,6 +1924,27 @@ static void ibmvnic_get_ringparam(struct net_device *netdev, ring->rx_jumbo_pending = 0; } +static int ibmvnic_set_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring) +{ + struct ibmvnic_adapter *adapter = netdev_priv(netdev); + + if (ring->rx_pending > adapter->max_rx_add_entries_per_subcrq || + ring->tx_pending > adapter->max_tx_entries_per_subcrq) { + netdev_err(netdev, "Invalid request.\n"); + netdev_err(netdev, "Max tx buffers = %llu\n", + adapter->max_rx_add_entries_per_subcrq); + netdev_err(netdev, "Max rx buffers = %llu\n", + adapter->max_tx_entries_per_subcrq); + return -EINVAL; + } + + adapter->desired.rx_entries = ring->rx_pending; + adapter->desired.tx_entries = ring->tx_pending; + + return wait_for_reset(adapter); +} + static void ibmvnic_get_channels(struct net_device *netdev, struct ethtool_channels *channels) { @@ -1864,6 +1960,17 @@ static void ibmvnic_get_channels(struct net_device *netdev, channels->combined_count = 0; } +static int ibmvnic_set_channels(struct net_device *netdev, + struct ethtool_channels *channels) +{ + struct ibmvnic_adapter *adapter = netdev_priv(netdev); + + adapter->desired.rx_queues = channels->rx_count; + adapter->desired.tx_queues = channels->tx_count; + + return wait_for_reset(adapter); +} + static void ibmvnic_get_strings(struct net_device *dev, u32 stringset, u8 *data) { struct ibmvnic_adapter *adapter = netdev_priv(dev); @@ -1960,7 +2067,9 @@ static const struct ethtool_ops ibmvnic_ethtool_ops = { .set_msglevel = ibmvnic_set_msglevel, .get_link = ibmvnic_get_link, .get_ringparam = ibmvnic_get_ringparam, + .set_ringparam = ibmvnic_set_ringparam, .get_channels = ibmvnic_get_channels, + .set_channels = ibmvnic_set_channels, .get_strings = ibmvnic_get_strings, .get_sset_count = ibmvnic_get_sset_count, .get_ethtool_stats = ibmvnic_get_ethtool_stats, @@ -2426,6 +2535,7 @@ static void ibmvnic_send_req_caps(struct ibmvnic_adapter *adapter, int retry) { struct device *dev = &adapter->vdev->dev; union ibmvnic_crq crq; + int max_entries; if (!retry) { /* Sub-CRQ entries are 32 byte long */ @@ -2437,21 +2547,60 @@ static void ibmvnic_send_req_caps(struct ibmvnic_adapter *adapter, int retry) return; } - /* Get the minimum between the queried max and the entries - * that fit in our PAGE_SIZE - */ - adapter->req_tx_entries_per_subcrq = - adapter->max_tx_entries_per_subcrq > entries_page ? - entries_page : adapter->max_tx_entries_per_subcrq; - adapter->req_rx_add_entries_per_subcrq = - adapter->max_rx_add_entries_per_subcrq > entries_page ? - entries_page : adapter->max_rx_add_entries_per_subcrq; - - adapter->req_tx_queues = adapter->opt_tx_comp_sub_queues; - adapter->req_rx_queues = adapter->opt_rx_comp_queues; - adapter->req_rx_add_queues = adapter->max_rx_add_queues; + if (adapter->desired.mtu) + adapter->req_mtu = adapter->desired.mtu; + else + adapter->req_mtu = adapter->netdev->mtu + ETH_HLEN; + + if (!adapter->desired.tx_entries) + adapter->desired.tx_entries = + adapter->max_tx_entries_per_subcrq; + if (!adapter->desired.rx_entries) + adapter->desired.rx_entries = + adapter->max_rx_add_entries_per_subcrq; + + max_entries = IBMVNIC_MAX_LTB_SIZE / + (adapter->req_mtu + IBMVNIC_BUFFER_HLEN); + + if ((adapter->req_mtu + IBMVNIC_BUFFER_HLEN) * + adapter->desired.tx_entries > IBMVNIC_MAX_LTB_SIZE) { + adapter->desired.tx_entries = max_entries; + } - adapter->req_mtu = adapter->netdev->mtu + ETH_HLEN; + if ((adapter->req_mtu + IBMVNIC_BUFFER_HLEN) * + adapter->desired.rx_entries > IBMVNIC_MAX_LTB_SIZE) { + adapter->desired.rx_entries = max_entries; + } + + if (adapter->desired.tx_entries) + adapter->req_tx_entries_per_subcrq = + adapter->desired.tx_entries; + else + adapter->req_tx_entries_per_subcrq = + adapter->max_tx_entries_per_subcrq; + + if (adapter->desired.rx_entries) + adapter->req_rx_add_entries_per_subcrq = + adapter->desired.rx_entries; + else + adapter->req_rx_add_entries_per_subcrq = + adapter->max_rx_add_entries_per_subcrq; + + if (adapter->desired.tx_queues) + adapter->req_tx_queues = + adapter->desired.tx_queues; + else + adapter->req_tx_queues = + adapter->opt_tx_comp_sub_queues; + + if (adapter->desired.rx_queues) + adapter->req_rx_queues = + adapter->desired.rx_queues; + else + adapter->req_rx_queues = + adapter->opt_rx_comp_queues; + + adapter->req_rx_add_queues = adapter->max_rx_add_queues; } memset(&crq, 0, sizeof(crq)); @@ -3272,6 +3421,7 @@ static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq, struct ibmvnic_adapter *adapter) { struct device *dev = &adapter->vdev->dev; + struct net_device *netdev = adapter->netdev; struct ibmvnic_login_rsp_buffer *login_rsp = adapter->login_rsp_buf; struct ibmvnic_login_buffer *login = adapter->login_buf; int i; @@ -3291,6 +3441,8 @@ static int handle_login_rsp(union ibmvnic_crq *login_rsp_crq, return 0; } + netdev->mtu = adapter->req_mtu - ETH_HLEN; + netdev_dbg(adapter->netdev, "Login Response Buffer:\n"); for (i = 0; i < (adapter->login_rsp_buf_sz - 1) / 8 + 1; i++) { netdev_dbg(adapter->netdev, "%016lx\n", @@ -3846,7 +3998,7 @@ static int ibmvnic_init(struct ibmvnic_adapter *adapter) unsigned long timeout = msecs_to_jiffies(30000); int rc; - if (adapter->resetting) { + if (adapter->resetting && !adapter->wait_for_reset) { rc = ibmvnic_reset_crq(adapter); if (!rc) rc = vio_enable_interrupts(adapter->vdev); @@ -3880,7 +4032,7 @@ static int ibmvnic_init(struct ibmvnic_adapter *adapter) return -1; } - if (adapter->resetting) + if (adapter->resetting && !adapter->wait_for_reset) rc = reset_sub_crq_queues(adapter); else rc = init_sub_crqs(adapter); @@ -3949,6 +4101,8 @@ static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) mutex_init(&adapter->rwi_lock); adapter->resetting = false; + adapter->mac_change_pending = false; + do { rc = ibmvnic_init(adapter); if (rc && rc != EAGAIN) @@ -3956,6 +4110,8 @@ static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) } while (rc == EAGAIN); 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) @@ -3970,6 +4126,9 @@ static int ibmvnic_probe(struct vio_dev *dev, const struct vio_device_id *id) dev_info(&dev->dev, "ibmvnic registered\n"); adapter->state = VNIC_PROBED; + + adapter->wait_for_reset = false; + return 0; ibmvnic_register_fail: diff --git a/drivers/net/ethernet/ibm/ibmvnic.h b/drivers/net/ethernet/ibm/ibmvnic.h index 7aa347a21e78..27107f33755b 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.h +++ b/drivers/net/ethernet/ibm/ibmvnic.h @@ -42,6 +42,9 @@ #define IBMVNIC_TSO_BUF_SZ 65536 #define IBMVNIC_TSO_BUFS 64 +#define IBMVNIC_MAX_LTB_SIZE ((1 << (MAX_ORDER - 1)) * PAGE_SIZE) +#define IBMVNIC_BUFFER_HLEN 500 + struct ibmvnic_login_buffer { __be32 len; __be32 version; @@ -945,13 +948,23 @@ enum ibmvnic_reset_reason {VNIC_RESET_FAILOVER = 1, VNIC_RESET_MOBILITY, VNIC_RESET_FATAL, VNIC_RESET_NON_FATAL, - VNIC_RESET_TIMEOUT}; + VNIC_RESET_TIMEOUT, + VNIC_RESET_CHANGE_PARAM}; struct ibmvnic_rwi { enum ibmvnic_reset_reason reset_reason; struct list_head list; }; +struct ibmvnic_tunables { + u64 rx_queues; + u64 tx_queues; + u64 rx_entries; + u64 tx_entries; + u64 mtu; + struct sockaddr mac; +}; + struct ibmvnic_adapter { struct vio_dev *vdev; struct net_device *netdev; @@ -1012,6 +1025,10 @@ struct ibmvnic_adapter { struct completion fw_done; int fw_done_rc; + struct completion reset_done; + int reset_done_rc; + bool wait_for_reset; + /* partner capabilities */ u64 min_tx_queues; u64 min_rx_queues; @@ -1056,4 +1073,9 @@ struct ibmvnic_adapter { struct work_struct ibmvnic_reset; bool resetting; bool napi_enabled, from_passive_init; + + bool mac_change_pending; + + struct ibmvnic_tunables desired; + struct ibmvnic_tunables fallback; }; |