diff options
Diffstat (limited to 'drivers/infiniband/core')
| -rw-r--r-- | drivers/infiniband/core/agent.c | 16 | ||||
| -rw-r--r-- | drivers/infiniband/core/cm.c | 5 | ||||
| -rw-r--r-- | drivers/infiniband/core/mad.c | 283 | ||||
| -rw-r--r-- | drivers/infiniband/core/mad_priv.h | 3 | ||||
| -rw-r--r-- | drivers/infiniband/core/sa_query.c | 2 | ||||
| -rw-r--r-- | drivers/infiniband/core/user_mad.c | 188 | ||||
| -rw-r--r-- | drivers/infiniband/core/uverbs.h | 1 | ||||
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 93 | ||||
| -rw-r--r-- | drivers/infiniband/core/uverbs_main.c | 1 |
9 files changed, 453 insertions, 139 deletions
diff --git a/drivers/infiniband/core/agent.c b/drivers/infiniband/core/agent.c index 2bc7f5af64f4..f6d29614cb01 100644 --- a/drivers/infiniband/core/agent.c +++ b/drivers/infiniband/core/agent.c @@ -94,14 +94,14 @@ void agent_send_response(struct ib_mad *mad, struct ib_grh *grh, port_priv = ib_get_agent_port(device, port_num); if (!port_priv) { - printk(KERN_ERR SPFX "Unable to find port agent\n"); + dev_err(&device->dev, "Unable to find port agent\n"); return; } agent = port_priv->agent[qpn]; ah = ib_create_ah_from_wc(agent->qp->pd, wc, grh, port_num); if (IS_ERR(ah)) { - printk(KERN_ERR SPFX "ib_create_ah_from_wc error %ld\n", + dev_err(&device->dev, "ib_create_ah_from_wc error %ld\n", PTR_ERR(ah)); return; } @@ -110,7 +110,7 @@ void agent_send_response(struct ib_mad *mad, struct ib_grh *grh, IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA, GFP_KERNEL); if (IS_ERR(send_buf)) { - printk(KERN_ERR SPFX "ib_create_send_mad error\n"); + dev_err(&device->dev, "ib_create_send_mad error\n"); goto err1; } @@ -125,7 +125,7 @@ void agent_send_response(struct ib_mad *mad, struct ib_grh *grh, } if (ib_post_send_mad(send_buf, NULL)) { - printk(KERN_ERR SPFX "ib_post_send_mad error\n"); + dev_err(&device->dev, "ib_post_send_mad error\n"); goto err2; } return; @@ -151,7 +151,7 @@ int ib_agent_port_open(struct ib_device *device, int port_num) /* Create new device info */ port_priv = kzalloc(sizeof *port_priv, GFP_KERNEL); if (!port_priv) { - printk(KERN_ERR SPFX "No memory for ib_agent_port_private\n"); + dev_err(&device->dev, "No memory for ib_agent_port_private\n"); ret = -ENOMEM; goto error1; } @@ -161,7 +161,7 @@ int ib_agent_port_open(struct ib_device *device, int port_num) port_priv->agent[0] = ib_register_mad_agent(device, port_num, IB_QPT_SMI, NULL, 0, &agent_send_handler, - NULL, NULL); + NULL, NULL, 0); if (IS_ERR(port_priv->agent[0])) { ret = PTR_ERR(port_priv->agent[0]); goto error2; @@ -172,7 +172,7 @@ int ib_agent_port_open(struct ib_device *device, int port_num) port_priv->agent[1] = ib_register_mad_agent(device, port_num, IB_QPT_GSI, NULL, 0, &agent_send_handler, - NULL, NULL); + NULL, NULL, 0); if (IS_ERR(port_priv->agent[1])) { ret = PTR_ERR(port_priv->agent[1]); goto error3; @@ -202,7 +202,7 @@ int ib_agent_port_close(struct ib_device *device, int port_num) port_priv = __ib_get_agent_port(device, port_num); if (port_priv == NULL) { spin_unlock_irqrestore(&ib_agent_port_list_lock, flags); - printk(KERN_ERR SPFX "Port %d not found\n", port_num); + dev_err(&device->dev, "Port %d not found\n", port_num); return -ENODEV; } list_del(&port_priv->port_list); diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c index c3239170d8b7..e28a494e2a3a 100644 --- a/drivers/infiniband/core/cm.c +++ b/drivers/infiniband/core/cm.c @@ -3753,7 +3753,7 @@ static void cm_add_one(struct ib_device *ib_device) struct cm_port *port; struct ib_mad_reg_req reg_req = { .mgmt_class = IB_MGMT_CLASS_CM, - .mgmt_class_version = IB_CM_CLASS_VERSION + .mgmt_class_version = IB_CM_CLASS_VERSION, }; struct ib_port_modify port_modify = { .set_port_cap_mask = IB_PORT_CM_SUP @@ -3801,7 +3801,8 @@ static void cm_add_one(struct ib_device *ib_device) 0, cm_send_handler, cm_recv_handler, - port); + port, + 0); if (IS_ERR(port->mad_agent)) goto error2; diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index ab31f136d04b..74c30f4c557e 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -33,6 +33,9 @@ * SOFTWARE. * */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/dma-mapping.h> #include <linux/slab.h> #include <linux/module.h> @@ -195,7 +198,8 @@ struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device, u8 rmpp_version, ib_mad_send_handler send_handler, ib_mad_recv_handler recv_handler, - void *context) + void *context, + u32 registration_flags) { struct ib_mad_port_private *port_priv; struct ib_mad_agent *ret = ERR_PTR(-EINVAL); @@ -211,68 +215,109 @@ struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device, /* Validate parameters */ qpn = get_spl_qp_index(qp_type); - if (qpn == -1) + if (qpn == -1) { + dev_notice(&device->dev, + "ib_register_mad_agent: invalid QP Type %d\n", + qp_type); goto error1; + } - if (rmpp_version && rmpp_version != IB_MGMT_RMPP_VERSION) + if (rmpp_version && rmpp_version != IB_MGMT_RMPP_VERSION) { + dev_notice(&device->dev, + "ib_register_mad_agent: invalid RMPP Version %u\n", + rmpp_version); goto error1; + } /* Validate MAD registration request if supplied */ if (mad_reg_req) { - if (mad_reg_req->mgmt_class_version >= MAX_MGMT_VERSION) + if (mad_reg_req->mgmt_class_version >= MAX_MGMT_VERSION) { + dev_notice(&device->dev, + "ib_register_mad_agent: invalid Class Version %u\n", + mad_reg_req->mgmt_class_version); goto error1; - if (!recv_handler) + } + if (!recv_handler) { + dev_notice(&device->dev, + "ib_register_mad_agent: no recv_handler\n"); goto error1; + } if (mad_reg_req->mgmt_class >= MAX_MGMT_CLASS) { /* * IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE is the only * one in this range currently allowed */ if (mad_reg_req->mgmt_class != - IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) + IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) { + dev_notice(&device->dev, + "ib_register_mad_agent: Invalid Mgmt Class 0x%x\n", + mad_reg_req->mgmt_class); goto error1; + } } else if (mad_reg_req->mgmt_class == 0) { /* * Class 0 is reserved in IBA and is used for * aliasing of IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE */ + dev_notice(&device->dev, + "ib_register_mad_agent: Invalid Mgmt Class 0\n"); goto error1; } else if (is_vendor_class(mad_reg_req->mgmt_class)) { /* * If class is in "new" vendor range, * ensure supplied OUI is not zero */ - if (!is_vendor_oui(mad_reg_req->oui)) + if (!is_vendor_oui(mad_reg_req->oui)) { + dev_notice(&device->dev, + "ib_register_mad_agent: No OUI specified for class 0x%x\n", + mad_reg_req->mgmt_class); goto error1; + } } /* Make sure class supplied is consistent with RMPP */ if (!ib_is_mad_class_rmpp(mad_reg_req->mgmt_class)) { - if (rmpp_version) + if (rmpp_version) { + dev_notice(&device->dev, + "ib_register_mad_agent: RMPP version for non-RMPP class 0x%x\n", + mad_reg_req->mgmt_class); goto error1; + } } + /* Make sure class supplied is consistent with QP type */ if (qp_type == IB_QPT_SMI) { if ((mad_reg_req->mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED) && (mad_reg_req->mgmt_class != - IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)) + IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)) { + dev_notice(&device->dev, + "ib_register_mad_agent: Invalid SM QP type: class 0x%x\n", + mad_reg_req->mgmt_class); goto error1; + } } else { if ((mad_reg_req->mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED) || (mad_reg_req->mgmt_class == - IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)) + IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)) { + dev_notice(&device->dev, + "ib_register_mad_agent: Invalid GS QP type: class 0x%x\n", + mad_reg_req->mgmt_class); goto error1; + } } } else { /* No registration request supplied */ if (!send_handler) goto error1; + if (registration_flags & IB_MAD_USER_RMPP) + goto error1; } /* Validate device and port */ port_priv = ib_get_mad_port(device, port_num); if (!port_priv) { + dev_notice(&device->dev, "ib_register_mad_agent: Invalid port\n"); ret = ERR_PTR(-ENODEV); goto error1; } @@ -280,6 +325,8 @@ struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device, /* Verify the QP requested is supported. For example, Ethernet devices * will not have QP0 */ if (!port_priv->qp_info[qpn].qp) { + dev_notice(&device->dev, + "ib_register_mad_agent: QP %d not supported\n", qpn); ret = ERR_PTR(-EPROTONOSUPPORT); goto error1; } @@ -316,6 +363,7 @@ struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device, mad_agent_priv->agent.context = context; mad_agent_priv->agent.qp = port_priv->qp_info[qpn].qp; mad_agent_priv->agent.port_num = port_num; + mad_agent_priv->agent.flags = registration_flags; spin_lock_init(&mad_agent_priv->lock); INIT_LIST_HEAD(&mad_agent_priv->send_list); INIT_LIST_HEAD(&mad_agent_priv->wait_list); @@ -706,7 +754,7 @@ static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv, smi_handle_dr_smp_send(smp, device->node_type, port_num) == IB_SMI_DISCARD) { ret = -EINVAL; - printk(KERN_ERR PFX "Invalid directed route\n"); + dev_err(&device->dev, "Invalid directed route\n"); goto out; } @@ -718,7 +766,7 @@ static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv, local = kmalloc(sizeof *local, GFP_ATOMIC); if (!local) { ret = -ENOMEM; - printk(KERN_ERR PFX "No memory for ib_mad_local_private\n"); + dev_err(&device->dev, "No memory for ib_mad_local_private\n"); goto out; } local->mad_priv = NULL; @@ -726,7 +774,7 @@ static int handle_outgoing_dr_smp(struct ib_mad_agent_private *mad_agent_priv, mad_priv = kmem_cache_alloc(ib_mad_cache, GFP_ATOMIC); if (!mad_priv) { ret = -ENOMEM; - printk(KERN_ERR PFX "No memory for local response MAD\n"); + dev_err(&device->dev, "No memory for local response MAD\n"); kfree(local); goto out; } @@ -837,9 +885,9 @@ static int alloc_send_rmpp_list(struct ib_mad_send_wr_private *send_wr, for (left = send_buf->data_len + pad; left > 0; left -= seg_size) { seg = kmalloc(sizeof (*seg) + seg_size, gfp_mask); if (!seg) { - printk(KERN_ERR "alloc_send_rmpp_segs: RMPP mem " - "alloc failed for len %zd, gfp %#x\n", - sizeof (*seg) + seg_size, gfp_mask); + dev_err(&send_buf->mad_agent->device->dev, + "alloc_send_rmpp_segs: RMPP mem alloc failed for len %zd, gfp %#x\n", + sizeof (*seg) + seg_size, gfp_mask); free_send_rmpp_list(send_wr); return -ENOMEM; } @@ -862,6 +910,12 @@ static int alloc_send_rmpp_list(struct ib_mad_send_wr_private *send_wr, return 0; } +int ib_mad_kernel_rmpp_agent(struct ib_mad_agent *agent) +{ + return agent->rmpp_version && !(agent->flags & IB_MAD_USER_RMPP); +} +EXPORT_SYMBOL(ib_mad_kernel_rmpp_agent); + struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent, u32 remote_qpn, u16 pkey_index, int rmpp_active, @@ -878,10 +932,12 @@ struct ib_mad_send_buf * ib_create_send_mad(struct ib_mad_agent *mad_agent, pad = get_pad_size(hdr_len, data_len); message_size = hdr_len + data_len + pad; - if ((!mad_agent->rmpp_version && - (rmpp_active || message_size > sizeof(struct ib_mad))) || - (!rmpp_active && message_size > sizeof(struct ib_mad))) - return ERR_PTR(-EINVAL); + if (ib_mad_kernel_rmpp_agent(mad_agent)) { + if (!rmpp_active && message_size > sizeof(struct ib_mad)) + return ERR_PTR(-EINVAL); + } else + if (rmpp_active || message_size > sizeof(struct ib_mad)) + return ERR_PTR(-EINVAL); size = rmpp_active ? hdr_len : sizeof(struct ib_mad); buf = kzalloc(sizeof *mad_send_wr + size, gfp_mask); @@ -1135,7 +1191,7 @@ int ib_post_send_mad(struct ib_mad_send_buf *send_buf, &mad_agent_priv->send_list); spin_unlock_irqrestore(&mad_agent_priv->lock, flags); - if (mad_agent_priv->agent.rmpp_version) { + if (ib_mad_kernel_rmpp_agent(&mad_agent_priv->agent)) { ret = ib_send_rmpp_mad(mad_send_wr); if (ret >= 0 && ret != IB_RMPP_RESULT_CONSUMED) ret = ib_send_mad(mad_send_wr); @@ -1199,7 +1255,8 @@ EXPORT_SYMBOL(ib_redirect_mad_qp); int ib_process_mad_wc(struct ib_mad_agent *mad_agent, struct ib_wc *wc) { - printk(KERN_ERR PFX "ib_process_mad_wc() not implemented yet\n"); + dev_err(&mad_agent->device->dev, + "ib_process_mad_wc() not implemented yet\n"); return 0; } EXPORT_SYMBOL(ib_process_mad_wc); @@ -1211,7 +1268,7 @@ static int method_in_use(struct ib_mad_mgmt_method_table **method, for_each_set_bit(i, mad_reg_req->method_mask, IB_MGMT_MAX_METHODS) { if ((*method)->agent[i]) { - printk(KERN_ERR PFX "Method %d already in use\n", i); + pr_err("Method %d already in use\n", i); return -EINVAL; } } @@ -1223,8 +1280,7 @@ static int allocate_method_table(struct ib_mad_mgmt_method_table **method) /* Allocate management method table */ *method = kzalloc(sizeof **method, GFP_ATOMIC); if (!*method) { - printk(KERN_ERR PFX "No memory for " - "ib_mad_mgmt_method_table\n"); + pr_err("No memory for ib_mad_mgmt_method_table\n"); return -ENOMEM; } @@ -1319,8 +1375,8 @@ static int add_nonoui_reg_req(struct ib_mad_reg_req *mad_reg_req, /* Allocate management class table for "new" class version */ *class = kzalloc(sizeof **class, GFP_ATOMIC); if (!*class) { - printk(KERN_ERR PFX "No memory for " - "ib_mad_mgmt_class_table\n"); + dev_err(&agent_priv->agent.device->dev, + "No memory for ib_mad_mgmt_class_table\n"); ret = -ENOMEM; goto error1; } @@ -1386,8 +1442,8 @@ static int add_oui_reg_req(struct ib_mad_reg_req *mad_reg_req, /* Allocate mgmt vendor class table for "new" class version */ vendor = kzalloc(sizeof *vendor, GFP_ATOMIC); if (!vendor) { - printk(KERN_ERR PFX "No memory for " - "ib_mad_mgmt_vendor_class_table\n"); + dev_err(&agent_priv->agent.device->dev, + "No memory for ib_mad_mgmt_vendor_class_table\n"); goto error1; } @@ -1397,8 +1453,8 @@ static int add_oui_reg_req(struct ib_mad_reg_req *mad_reg_req, /* Allocate table for this management vendor class */ vendor_class = kzalloc(sizeof *vendor_class, GFP_ATOMIC); if (!vendor_class) { - printk(KERN_ERR PFX "No memory for " - "ib_mad_mgmt_vendor_class\n"); + dev_err(&agent_priv->agent.device->dev, + "No memory for ib_mad_mgmt_vendor_class\n"); goto error2; } @@ -1429,7 +1485,7 @@ static int add_oui_reg_req(struct ib_mad_reg_req *mad_reg_req, goto check_in_use; } } - printk(KERN_ERR PFX "All OUI slots in use\n"); + dev_err(&agent_priv->agent.device->dev, "All OUI slots in use\n"); goto error3; check_in_use: @@ -1640,9 +1696,9 @@ find_mad_agent(struct ib_mad_port_private *port_priv, if (mad_agent->agent.recv_handler) atomic_inc(&mad_agent->refcount); else { - printk(KERN_NOTICE PFX "No receive handler for client " - "%p on port %d\n", - &mad_agent->agent, port_priv->port_num); + dev_notice(&port_priv->device->dev, + "No receive handler for client %p on port %d\n", + &mad_agent->agent, port_priv->port_num); mad_agent = NULL; } } @@ -1658,8 +1714,8 @@ static int validate_mad(struct ib_mad *mad, u32 qp_num) /* Make sure MAD base version is understood */ if (mad->mad_hdr.base_version != IB_MGMT_BASE_VERSION) { - printk(KERN_ERR PFX "MAD received with unsupported base " - "version %d\n", mad->mad_hdr.base_version); + pr_err("MAD received with unsupported base version %d\n", + mad->mad_hdr.base_version); goto out; } @@ -1685,6 +1741,7 @@ static int is_data_mad(struct ib_mad_agent_private *mad_agent_priv, rmpp_mad = (struct ib_rmpp_mad *)mad_hdr; return !mad_agent_priv->agent.rmpp_version || + !ib_mad_kernel_rmpp_agent(&mad_agent_priv->agent) || !(ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & IB_MGMT_RMPP_FLAG_ACTIVE) || (rmpp_mad->rmpp_hdr.rmpp_type == IB_MGMT_RMPP_TYPE_DATA); @@ -1812,7 +1869,7 @@ static void ib_mad_complete_recv(struct ib_mad_agent_private *mad_agent_priv, INIT_LIST_HEAD(&mad_recv_wc->rmpp_list); list_add(&mad_recv_wc->recv_buf.list, &mad_recv_wc->rmpp_list); - if (mad_agent_priv->agent.rmpp_version) { + if (ib_mad_kernel_rmpp_agent(&mad_agent_priv->agent)) { mad_recv_wc = ib_process_rmpp_recv_wc(mad_agent_priv, mad_recv_wc); if (!mad_recv_wc) { @@ -1827,23 +1884,39 @@ static void ib_mad_complete_recv(struct ib_mad_agent_private *mad_agent_priv, mad_send_wr = ib_find_send_mad(mad_agent_priv, mad_recv_wc); if (!mad_send_wr) { spin_unlock_irqrestore(&mad_agent_priv->lock, flags); - ib_free_recv_mad(mad_recv_wc); - deref_mad_agent(mad_agent_priv); - return; - } - ib_mark_mad_done(mad_send_wr); - spin_unlock_irqrestore(&mad_agent_priv->lock, flags); + if (!ib_mad_kernel_rmpp_agent(&mad_agent_priv->agent) + && ib_is_mad_class_rmpp(mad_recv_wc->recv_buf.mad->mad_hdr.mgmt_class) + && (ib_get_rmpp_flags(&((struct ib_rmpp_mad *)mad_recv_wc->recv_buf.mad)->rmpp_hdr) + & IB_MGMT_RMPP_FLAG_ACTIVE)) { + /* user rmpp is in effect + * and this is an active RMPP MAD + */ + mad_recv_wc->wc->wr_id = 0; + mad_agent_priv->agent.recv_handler(&mad_agent_priv->agent, + mad_recv_wc); + atomic_dec(&mad_agent_priv->refcount); + } else { + /* not user rmpp, revert to normal behavior and + * drop the mad */ + ib_free_recv_mad(mad_recv_wc); + deref_mad_agent(mad_agent_priv); + return; + } + } else { + ib_mark_mad_done(mad_send_wr); + spin_unlock_irqrestore(&mad_agent_priv->lock, flags); - /* Defined behavior is to complete response before request */ - mad_recv_wc->wc->wr_id = (unsigned long) &mad_send_wr->send_buf; - mad_agent_priv->agent.recv_handler(&mad_agent_priv->agent, - mad_recv_wc); - atomic_dec(&mad_agent_priv->refcount); + /* Defined behavior is to complete response before request */ + mad_recv_wc->wc->wr_id = (unsigned long) &mad_send_wr->send_buf; + mad_agent_priv->agent.recv_handler(&mad_agent_priv->agent, + mad_recv_wc); + atomic_dec(&mad_agent_priv->refcount); - mad_send_wc.status = IB_WC_SUCCESS; - mad_send_wc.vendor_err = 0; - mad_send_wc.send_buf = &mad_send_wr->send_buf; - ib_mad_complete_send_wr(mad_send_wr, &mad_send_wc); + mad_send_wc.status = IB_WC_SUCCESS; + mad_send_wc.vendor_err = 0; + mad_send_wc.send_buf = &mad_send_wr->send_buf; + ib_mad_complete_send_wr(mad_send_wr, &mad_send_wc); + } } else { mad_agent_priv->agent.recv_handler(&mad_agent_priv->agent, mad_recv_wc); @@ -1911,8 +1984,8 @@ static void ib_mad_recv_done_handler(struct ib_mad_port_private *port_priv, response = kmem_cache_alloc(ib_mad_cache, GFP_KERNEL); if (!response) { - printk(KERN_ERR PFX "ib_mad_recv_done_handler no memory " - "for response buffer\n"); + dev_err(&port_priv->device->dev, + "ib_mad_recv_done_handler no memory for response buffer\n"); goto out; } @@ -2083,7 +2156,7 @@ void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr, mad_agent_priv = mad_send_wr->mad_agent_priv; spin_lock_irqsave(&mad_agent_priv->lock, flags); - if (mad_agent_priv->agent.rmpp_version) { + if (ib_mad_kernel_rmpp_agent(&mad_agent_priv->agent)) { ret = ib_process_rmpp_send_wc(mad_send_wr, mad_send_wc); if (ret == IB_RMPP_RESULT_CONSUMED) goto done; @@ -2176,7 +2249,8 @@ retry: ret = ib_post_send(qp_info->qp, &queued_send_wr->send_wr, &bad_send_wr); if (ret) { - printk(KERN_ERR PFX "ib_post_send failed: %d\n", ret); + dev_err(&port_priv->device->dev, + "ib_post_send failed: %d\n", ret); mad_send_wr = queued_send_wr; wc->status = IB_WC_LOC_QP_OP_ERR; goto retry; @@ -2248,8 +2322,9 @@ static void mad_error_handler(struct ib_mad_port_private *port_priv, IB_QP_STATE | IB_QP_CUR_STATE); kfree(attr); if (ret) - printk(KERN_ERR PFX "mad_error_handler - " - "ib_modify_qp to RTS : %d\n", ret); + dev_err(&port_priv->device->dev, + "mad_error_handler - ib_modify_qp to RTS : %d\n", + ret); else mark_sends_for_retry(qp_info); } @@ -2408,7 +2483,8 @@ static void local_completions(struct work_struct *work) if (local->mad_priv) { recv_mad_agent = local->recv_mad_agent; if (!recv_mad_agent) { - printk(KERN_ERR PFX "No receive MAD agent for local completion\n"); + dev_err(&mad_agent_priv->agent.device->dev, + "No receive MAD agent for local completion\n"); free_mad = 1; goto local_send_completion; } @@ -2476,7 +2552,7 @@ static int retry_send(struct ib_mad_send_wr_private *mad_send_wr) mad_send_wr->timeout = msecs_to_jiffies(mad_send_wr->send_buf.timeout_ms); - if (mad_send_wr->mad_agent_priv->agent.rmpp_version) { + if (ib_mad_kernel_rmpp_agent(&mad_send_wr->mad_agent_priv->agent)) { ret = ib_retry_rmpp(mad_send_wr); switch (ret) { case IB_RMPP_RESULT_UNHANDLED: @@ -2589,7 +2665,8 @@ static int ib_mad_post_receive_mads(struct ib_mad_qp_info *qp_info, } else { mad_priv = kmem_cache_alloc(ib_mad_cache, GFP_KERNEL); if (!mad_priv) { - printk(KERN_ERR PFX "No memory for receive buffer\n"); + dev_err(&qp_info->port_priv->device->dev, + "No memory for receive buffer\n"); ret = -ENOMEM; break; } @@ -2625,7 +2702,8 @@ static int ib_mad_post_receive_mads(struct ib_mad_qp_info *qp_info, sizeof mad_priv->header, DMA_FROM_DEVICE); kmem_cache_free(ib_mad_cache, mad_priv); - printk(KERN_ERR PFX "ib_post_recv failed: %d\n", ret); + dev_err(&qp_info->port_priv->device->dev, + "ib_post_recv failed: %d\n", ret); break; } } while (post); @@ -2681,7 +2759,8 @@ static int ib_mad_port_start(struct ib_mad_port_private *port_priv) attr = kmalloc(sizeof *attr, GFP_KERNEL); if (!attr) { - printk(KERN_ERR PFX "Couldn't kmalloc ib_qp_attr\n"); + dev_err(&port_priv->device->dev, + "Couldn't kmalloc ib_qp_attr\n"); return -ENOMEM; } @@ -2705,16 +2784,18 @@ static int ib_mad_port_start(struct ib_mad_port_private *port_priv) ret = ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_PKEY_INDEX | IB_QP_QKEY); if (ret) { - printk(KERN_ERR PFX "Couldn't change QP%d state to " - "INIT: %d\n", i, ret); + dev_err(&port_priv->device->dev, + "Couldn't change QP%d state to INIT: %d\n", + i, ret); goto out; } attr->qp_state = IB_QPS_RTR; ret = ib_modify_qp(qp, attr, IB_QP_STATE); if (ret) { - printk(KERN_ERR PFX "Couldn't change QP%d state to " - "RTR: %d\n", i, ret); + dev_err(&port_priv->device->dev, + "Couldn't change QP%d state to RTR: %d\n", + i, ret); goto out; } @@ -2722,16 +2803,18 @@ static int ib_mad_port_start(struct ib_mad_port_private *port_priv) attr->sq_psn = IB_MAD_SEND_Q_PSN; ret = ib_modify_qp(qp, attr, IB_QP_STATE | IB_QP_SQ_PSN); if (ret) { - printk(KERN_ERR PFX "Couldn't change QP%d state to " - "RTS: %d\n", i, ret); + dev_err(&port_priv->device->dev, + "Couldn't change QP%d state to RTS: %d\n", + i, ret); goto out; } } ret = ib_req_notify_cq(port_priv->cq, IB_CQ_NEXT_COMP); if (ret) { - printk(KERN_ERR PFX "Failed to request completion " - "notification: %d\n", ret); + dev_err(&port_priv->device->dev, + "Failed to request completion notification: %d\n", + ret); goto out; } @@ -2741,7 +2824,8 @@ static int ib_mad_port_start(struct ib_mad_port_private *port_priv) ret = ib_mad_post_receive_mads(&port_priv->qp_info[i], NULL); if (ret) { - printk(KERN_ERR PFX "Couldn't post receive WRs\n"); + dev_err(&port_priv->device->dev, + "Couldn't post receive WRs\n"); goto out; } } @@ -2755,7 +2839,8 @@ static void qp_event_handler(struct ib_event *event, void *qp_context) struct ib_mad_qp_info *qp_info = qp_context; /* It's worse than that! He's dead, Jim! */ - printk(KERN_ERR PFX "Fatal error (%d) on MAD QP (%d)\n", + dev_err(&qp_info->port_priv->device->dev, + "Fatal error (%d) on MAD QP (%d)\n", event->event, qp_info->qp->qp_num); } @@ -2801,8 +2886,9 @@ static int create_mad_qp(struct ib_mad_qp_info *qp_info, qp_init_attr.event_handler = qp_event_handler; qp_info->qp = ib_create_qp(qp_info->port_priv->pd, &qp_init_attr); if (IS_ERR(qp_info->qp)) { - printk(KERN_ERR PFX "Couldn't create ib_mad QP%d\n", - get_spl_qp_index(qp_type)); + dev_err(&qp_info->port_priv->device->dev, + "Couldn't create ib_mad QP%d\n", + get_spl_qp_index(qp_type)); ret = PTR_ERR(qp_info->qp); goto error; } @@ -2840,7 +2926,7 @@ static int ib_mad_port_open(struct ib_device *device, /* Create new device info */ port_priv = kzalloc(sizeof *port_priv, GFP_KERNEL); if (!port_priv) { - printk(KERN_ERR PFX "No memory for ib_mad_port_private\n"); + dev_err(&device->dev, "No memory for ib_mad_port_private\n"); return -ENOMEM; } @@ -2860,21 +2946,21 @@ static int ib_mad_port_open(struct ib_device *device, ib_mad_thread_completion_handler, NULL, port_priv, cq_size, 0); if (IS_ERR(port_priv->cq)) { - printk(KERN_ERR PFX "Couldn't create ib_mad CQ\n"); + dev_err(&device->dev, "Couldn't create ib_mad CQ\n"); ret = PTR_ERR(port_priv->cq); goto error3; } port_priv->pd = ib_alloc_pd(device); if (IS_ERR(port_priv->pd)) { - printk(KERN_ERR PFX "Couldn't create ib_mad PD\n"); + dev_err(&device->dev, "Couldn't create ib_mad PD\n"); ret = PTR_ERR(port_priv->pd); goto error4; } port_priv->mr = ib_get_dma_mr(port_priv->pd, IB_ACCESS_LOCAL_WRITE); if (IS_ERR(port_priv->mr)) { - printk(KERN_ERR PFX "Couldn't get ib_mad DMA MR\n"); + dev_err(&device->dev, "Couldn't get ib_mad DMA MR\n"); ret = PTR_ERR(port_priv->mr); goto error5; } @@ -2902,7 +2988,7 @@ static int ib_mad_port_open(struct ib_device *device, ret = ib_mad_port_start(port_priv); if (ret) { - printk(KERN_ERR PFX "Couldn't start port\n"); + dev_err(&device->dev, "Couldn't start port\n"); goto error9; } @@ -2946,7 +3032,7 @@ static int ib_mad_port_close(struct ib_device *device, int port_num) port_priv = __ib_get_mad_port(device, port_num); if (port_priv == NULL) { spin_unlock_irqrestore(&ib_mad_port_list_lock, flags); - printk(KERN_ERR PFX "Port %d not found\n", port_num); + dev_err(&device->dev, "Port %d not found\n", port_num); return -ENODEV; } list_del_init(&port_priv->port_list); @@ -2984,14 +3070,12 @@ static void ib_mad_init_device(struct ib_device *device) for (i = start; i <= end; i++) { if (ib_mad_port_open(device, i)) { - printk(KERN_ERR PFX "Couldn't open %s port %d\n", - device->name, i); + dev_err(&device->dev, "Couldn't open port %d\n", i); goto error; } if (ib_agent_port_open(device, i)) { - printk(KERN_ERR PFX "Couldn't open %s port %d " - "for agents\n", - device->name, i); + dev_err(&device->dev, + "Couldn't open port %d for agents\n", i); goto error_agent; } } @@ -2999,20 +3083,17 @@ static void ib_mad_init_device(struct ib_device *device) error_agent: if (ib_mad_port_close(device, i)) - printk(KERN_ERR PFX "Couldn't close %s port %d\n", - device->name, i); + dev_err(&device->dev, "Couldn't close port %d\n", i); error: i--; while (i >= start) { if (ib_agent_port_close(device, i)) - printk(KERN_ERR PFX "Couldn't close %s port %d " - "for agents\n", - device->name, i); + dev_err(&device->dev, + "Couldn't close port %d for agents\n", i); if (ib_mad_port_close(device, i)) - printk(KERN_ERR PFX "Couldn't close %s port %d\n", - device->name, i); + dev_err(&device->dev, "Couldn't close port %d\n", i); i--; } } @@ -3033,12 +3114,12 @@ static void ib_mad_remove_device(struct ib_device *device) } for (i = 0; i < num_ports; i++, cur_port++) { if (ib_agent_port_close(device, cur_port)) - printk(KERN_ERR PFX "Couldn't close %s port %d " - "for agents\n", - device->name, cur_port); + dev_err(&device->dev, + "Couldn't close port %d for agents\n", + cur_port); if (ib_mad_port_close(device, cur_port)) - printk(KERN_ERR PFX "Couldn't close %s port %d\n", - device->name, cur_port); + dev_err(&device->dev, "Couldn't close port %d\n", + cur_port); } } @@ -3064,7 +3145,7 @@ static int __init ib_mad_init_module(void) SLAB_HWCACHE_ALIGN, NULL); if (!ib_mad_cache) { - printk(KERN_ERR PFX "Couldn't create ib_mad cache\n"); + pr_err("Couldn't create ib_mad cache\n"); ret = -ENOMEM; goto error1; } @@ -3072,7 +3153,7 @@ static int __init ib_mad_init_module(void) INIT_LIST_HEAD(&ib_mad_port_list); if (ib_register_client(&mad_client)) { - printk(KERN_ERR PFX "Couldn't register ib_mad client\n"); + pr_err("Couldn't register ib_mad client\n"); ret = -EINVAL; goto error2; } diff --git a/drivers/infiniband/core/mad_priv.h b/drivers/infiniband/core/mad_priv.h index 9430ab4969c5..d1a0b0ee9444 100644 --- a/drivers/infiniband/core/mad_priv.h +++ b/drivers/infiniband/core/mad_priv.h @@ -42,9 +42,6 @@ #include <rdma/ib_mad.h> #include <rdma/ib_smi.h> - -#define PFX "ib_mad: " - #define IB_MAD_QPS_CORE 2 /* Always QP0 and QP1 as a minimum */ /* QP and CQ parameters */ diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c index 233eaf541f55..c38f030f0dc9 100644 --- a/drivers/infiniband/core/sa_query.c +++ b/drivers/infiniband/core/sa_query.c @@ -1184,7 +1184,7 @@ static void ib_sa_add_one(struct ib_device *device) sa_dev->port[i].agent = ib_register_mad_agent(device, i + s, IB_QPT_GSI, NULL, 0, send_handler, - recv_handler, sa_dev); + recv_handler, sa_dev, 0); if (IS_ERR(sa_dev->port[i].agent)) goto err; diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c index 1acb99100556..928cdd20e2d1 100644 --- a/drivers/infiniband/core/user_mad.c +++ b/drivers/infiniband/core/user_mad.c @@ -33,6 +33,8 @@ * SOFTWARE. */ +#define pr_fmt(fmt) "user_mad: " fmt + #include <linux/module.h> #include <linux/init.h> #include <linux/device.h> @@ -504,13 +506,15 @@ static ssize_t ib_umad_write(struct file *filp, const char __user *buf, rmpp_mad = (struct ib_rmpp_mad *) packet->mad.data; hdr_len = ib_get_mad_data_offset(rmpp_mad->mad_hdr.mgmt_class); - if (!ib_is_mad_class_rmpp(rmpp_mad->mad_hdr.mgmt_class)) { - copy_offset = IB_MGMT_MAD_HDR; - rmpp_active = 0; - } else { + + if (ib_is_mad_class_rmpp(rmpp_mad->mad_hdr.mgmt_class) + && ib_mad_kernel_rmpp_agent(agent)) { copy_offset = IB_MGMT_RMPP_HDR; rmpp_active = ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & - IB_MGMT_RMPP_FLAG_ACTIVE; + IB_MGMT_RMPP_FLAG_ACTIVE; + } else { + copy_offset = IB_MGMT_MAD_HDR; + rmpp_active = 0; } data_len = count - hdr_size(file) - hdr_len; @@ -556,14 +560,22 @@ static ssize_t ib_umad_write(struct file *filp, const char __user *buf, rmpp_mad->mad_hdr.tid = *tid; } - spin_lock_irq(&file->send_lock); - ret = is_duplicate(file, packet); - if (!ret) + if (!ib_mad_kernel_rmpp_agent(agent) + && ib_is_mad_class_rmpp(rmpp_mad->mad_hdr.mgmt_class) + && (ib_get_rmpp_flags(&rmpp_mad->rmpp_hdr) & IB_MGMT_RMPP_FLAG_ACTIVE)) { + spin_lock_irq(&file->send_lock); list_add_tail(&packet->list, &file->send_list); - spin_unlock_irq(&file->send_lock); - if (ret) { - ret = -EINVAL; - goto err_msg; + spin_unlock_irq(&file->send_lock); + } else { + spin_lock_irq(&file->send_lock); + ret = is_duplicate(file, packet); + if (!ret) + list_add_tail(&packet->list, &file->send_list); + spin_unlock_irq(&file->send_lock); + if (ret) { + ret = -EINVAL; + goto err_msg; + } } ret = ib_post_send_mad(packet->msg, NULL); @@ -614,6 +626,8 @@ static int ib_umad_reg_agent(struct ib_umad_file *file, void __user *arg, mutex_lock(&file->mutex); if (!file->port->ib_dev) { + dev_notice(file->port->dev, + "ib_umad_reg_agent: invalid device\n"); ret = -EPIPE; goto out; } @@ -624,6 +638,9 @@ static int ib_umad_reg_agent(struct ib_umad_file *file, void __user *arg, } if (ureq.qpn != 0 && ureq.qpn != 1) { + dev_notice(file->port->dev, + "ib_umad_reg_agent: invalid QPN %d specified\n", + ureq.qpn); ret = -EINVAL; goto out; } @@ -632,11 +649,15 @@ static int ib_umad_reg_agent(struct ib_umad_file *file, void __user *arg, if (!__get_agent(file, agent_id)) goto found; + dev_notice(file->port->dev, + "ib_umad_reg_agent: Max Agents (%u) reached\n", + IB_UMAD_MAX_AGENTS); ret = -ENOMEM; goto out; found: if (ureq.mgmt_class) { + memset(&req, 0, sizeof(req)); req.mgmt_class = ureq.mgmt_class; req.mgmt_class_version = ureq.mgmt_class_version; memcpy(req.oui, ureq.oui, sizeof req.oui); @@ -657,7 +678,7 @@ found: ureq.qpn ? IB_QPT_GSI : IB_QPT_SMI, ureq.mgmt_class ? &req : NULL, ureq.rmpp_version, - send_handler, recv_handler, file); + send_handler, recv_handler, file, 0); if (IS_ERR(agent)) { ret = PTR_ERR(agent); agent = NULL; @@ -673,10 +694,11 @@ found: if (!file->already_used) { file->already_used = 1; if (!file->use_pkey_index) { - printk(KERN_WARNING "user_mad: process %s did not enable " - "P_Key index support.\n", current->comm); - printk(KERN_WARNING "user_mad: Documentation/infiniband/user_mad.txt " - "has info on the new ABI.\n"); + dev_warn(file->port->dev, + "process %s did not enable P_Key index support.\n", + current->comm); + dev_warn(file->port->dev, + " Documentation/infiniband/user_mad.txt has info on the new ABI.\n"); } } @@ -694,6 +716,119 @@ out: return ret; } +static int ib_umad_reg_agent2(struct ib_umad_file *file, void __user *arg) +{ + struct ib_user_mad_reg_req2 ureq; + struct ib_mad_reg_req req; + struct ib_mad_agent *agent = NULL; + int agent_id; + int ret; + + mutex_lock(&file->port->file_mutex); + mutex_lock(&file->mutex); + + if (!file->port->ib_dev) { + dev_notice(file->port->dev, + "ib_umad_reg_agent2: invalid device\n"); + ret = -EPIPE; + goto out; + } + + if (copy_from_user(&ureq, arg, sizeof(ureq))) { + ret = -EFAULT; + goto out; + } + + if (ureq.qpn != 0 && ureq.qpn != 1) { + dev_notice(file->port->dev, + "ib_umad_reg_agent2: invalid QPN %d specified\n", + ureq.qpn); + ret = -EINVAL; + goto out; + } + + if (ureq.flags & ~IB_USER_MAD_REG_FLAGS_CAP) { + dev_notice(file->port->dev, + "ib_umad_reg_agent2 failed: invalid registration flags specified 0x%x; supported 0x%x\n", + ureq.flags, IB_USER_MAD_REG_FLAGS_CAP); + ret = -EINVAL; + + if (put_user((u32)IB_USER_MAD_REG_FLAGS_CAP, + (u32 __user *) (arg + offsetof(struct + ib_user_mad_reg_req2, flags)))) + ret = -EFAULT; + + goto out; + } + + for (agent_id = 0; agent_id < IB_UMAD_MAX_AGENTS; ++agent_id) + if (!__get_agent(file, agent_id)) + goto found; + + dev_notice(file->port->dev, + "ib_umad_reg_agent2: Max Agents (%u) reached\n", + IB_UMAD_MAX_AGENTS); + ret = -ENOMEM; + goto out; + +found: + if (ureq.mgmt_class) { + memset(&req, 0, sizeof(req)); + req.mgmt_class = ureq.mgmt_class; + req.mgmt_class_version = ureq.mgmt_class_version; + if (ureq.oui & 0xff000000) { + dev_notice(file->port->dev, + "ib_umad_reg_agent2 failed: oui invalid 0x%08x\n", + ureq.oui); + ret = -EINVAL; + goto out; + } + req.oui[2] = ureq.oui & 0x0000ff; + req.oui[1] = (ureq.oui & 0x00ff00) >> 8; + req.oui[0] = (ureq.oui & 0xff0000) >> 16; + memcpy(req.method_mask, ureq.method_mask, + sizeof(req.method_mask)); + } + + agent = ib_register_mad_agent(file->port->ib_dev, file->port->port_num, + ureq.qpn ? IB_QPT_GSI : IB_QPT_SMI, + ureq.mgmt_class ? &req : NULL, + ureq.rmpp_version, + send_handler, recv_handler, file, + ureq.flags); + if (IS_ERR(agent)) { + ret = PTR_ERR(agent); + agent = NULL; + goto out; + } + + if (put_user(agent_id, + (u32 __user *)(arg + + offsetof(struct ib_user_mad_reg_req2, id)))) { + ret = -EFAULT; + goto out; + } + + if (!file->already_used) { + file->already_used = 1; + file->use_pkey_index = 1; + } + + file->agent[agent_id] = agent; + ret = 0; + +out: + mutex_unlock(&file->mutex); + + if (ret && agent) + ib_unregister_mad_agent(agent); + + mutex_unlock(&file->port->file_mutex); + + return ret; +} + + static int ib_umad_unreg_agent(struct ib_umad_file *file, u32 __user *arg) { struct ib_mad_agent *agent = NULL; @@ -749,6 +884,8 @@ static long ib_umad_ioctl(struct file *filp, unsigned int cmd, return ib_umad_unreg_agent(filp->private_data, (__u32 __user *) arg); case IB_USER_MAD_ENABLE_PKEY: return ib_umad_enable_pkey(filp->private_data); + case IB_USER_MAD_REGISTER_AGENT2: + return ib_umad_reg_agent2(filp->private_data, (void __user *) arg); default: return -ENOIOCTLCMD; } @@ -765,6 +902,8 @@ static long ib_umad_compat_ioctl(struct file *filp, unsigned int cmd, return ib_umad_unreg_agent(filp->private_data, compat_ptr(arg)); case IB_USER_MAD_ENABLE_PKEY: return ib_umad_enable_pkey(filp->private_data); + case IB_USER_MAD_REGISTER_AGENT2: + return ib_umad_reg_agent2(filp->private_data, compat_ptr(arg)); default: return -ENOIOCTLCMD; } @@ -983,7 +1122,7 @@ static CLASS_ATTR_STRING(abi_version, S_IRUGO, static dev_t overflow_maj; static DECLARE_BITMAP(overflow_map, IB_UMAD_MAX_PORTS); -static int find_overflow_devnum(void) +static int find_overflow_devnum(struct ib_device *device) { int ret; @@ -991,7 +1130,8 @@ static int find_overflow_devnum(void) ret = alloc_chrdev_region(&overflow_maj, 0, IB_UMAD_MAX_PORTS * 2, "infiniband_mad"); if (ret) { - printk(KERN_ERR "user_mad: couldn't register dynamic device number\n"); + dev_err(&device->dev, + "couldn't register dynamic device number\n"); return ret; } } @@ -1014,7 +1154,7 @@ static int ib_umad_init_port(struct ib_device *device, int port_num, devnum = find_first_zero_bit(dev_map, IB_UMAD_MAX_PORTS); if (devnum >= IB_UMAD_MAX_PORTS) { spin_unlock(&port_lock); - devnum = find_overflow_devnum(); + devnum = find_overflow_devnum(device); if (devnum < 0) return -1; @@ -1200,14 +1340,14 @@ static int __init ib_umad_init(void) ret = register_chrdev_region(base_dev, IB_UMAD_MAX_PORTS * 2, "infiniband_mad"); if (ret) { - printk(KERN_ERR "user_mad: couldn't register device number\n"); + pr_err("couldn't register device number\n"); goto out; } umad_class = class_create(THIS_MODULE, "infiniband_mad"); if (IS_ERR(umad_class)) { ret = PTR_ERR(umad_class); - printk(KERN_ERR "user_mad: couldn't create class infiniband_mad\n"); + pr_err("couldn't create class infiniband_mad\n"); goto out_chrdev; } @@ -1215,13 +1355,13 @@ static int __init ib_umad_init(void) ret = class_create_file(umad_class, &class_attr_abi_version.attr); if (ret) { - printk(KERN_ERR "user_mad: couldn't create abi_version attribute\n"); + pr_err("couldn't create abi_version attribute\n"); goto out_class; } ret = ib_register_client(&umad_client); if (ret) { - printk(KERN_ERR "user_mad: couldn't register ib_umad client\n"); + pr_err("couldn't register ib_umad client\n"); goto out_class; } diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h index a283274a5a09..643c08a025a5 100644 --- a/drivers/infiniband/core/uverbs.h +++ b/drivers/infiniband/core/uverbs.h @@ -221,6 +221,7 @@ IB_UVERBS_DECLARE_CMD(query_port); IB_UVERBS_DECLARE_CMD(alloc_pd); IB_UVERBS_DECLARE_CMD(dealloc_pd); IB_UVERBS_DECLARE_CMD(reg_mr); +IB_UVERBS_DECLARE_CMD(rereg_mr); IB_UVERBS_DECLARE_CMD(dereg_mr); IB_UVERBS_DECLARE_CMD(alloc_mw); IB_UVERBS_DECLARE_CMD(dealloc_mw); diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index ea6203ee7bcc..0600c50e6215 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -1002,6 +1002,99 @@ err_free: return ret; } +ssize_t ib_uverbs_rereg_mr(struct ib_uverbs_file *file, + const char __user *buf, int in_len, + int out_len) +{ + struct ib_uverbs_rereg_mr cmd; + struct ib_uverbs_rereg_mr_resp resp; + struct ib_udata udata; + struct ib_pd *pd = NULL; + struct ib_mr *mr; + struct ib_pd *old_pd; + int ret; + struct ib_uobject *uobj; + + if (out_len < sizeof(resp)) + return -ENOSPC; + + if (copy_from_user(&cmd, buf, sizeof(cmd))) + return -EFAULT; + + INIT_UDATA(&udata, buf + sizeof(cmd), + (unsigned long) cmd.response + sizeof(resp), + in_len - sizeof(cmd), out_len - sizeof(resp)); + + if (cmd.flags & ~IB_MR_REREG_SUPPORTED || !cmd.flags) + return -EINVAL; + + if ((cmd.flags & IB_MR_REREG_TRANS) && + (!cmd.start || !cmd.hca_va || 0 >= cmd.length || + (cmd.start & ~PAGE_MASK) != (cmd.hca_va & ~PAGE_MASK))) + return -EINVAL; + + uobj = idr_write_uobj(&ib_uverbs_mr_idr, cmd.mr_handle, + file->ucontext); + + if (!uobj) + return -EINVAL; + + mr = uobj->object; + + if (cmd.flags & IB_MR_REREG_ACCESS) { + ret = ib_check_mr_access(cmd.access_flags); + if (ret) + goto put_uobjs; + } + + if (cmd.flags & IB_MR_REREG_PD) { + pd = idr_read_pd(cmd.pd_handle, file->ucontext); + if (!pd) { + ret = -EINVAL; + goto put_uobjs; + } + } + + if (atomic_read(&mr->usecnt)) { + ret = -EBUSY; + goto put_uobj_pd; + } + + old_pd = mr->pd; + ret = mr->device->rereg_user_mr(mr, cmd.flags, cmd.start, + cmd.length, cmd.hca_va, + cmd.access_flags, pd, &udata); + if (!ret) { + if (cmd.flags & IB_MR_REREG_PD) { + atomic_inc(&pd->usecnt); + mr->pd = pd; + atomic_dec(&old_pd->usecnt); + } + } else { + goto put_uobj_pd; + } + + memset(&resp, 0, sizeof(resp)); + resp.lkey = mr->lkey; + resp.rkey = mr->rkey; + + if (copy_to_user((void __user *)(unsigned long)cmd.response, + &resp, sizeof(resp))) + ret = -EFAULT; + else + ret = in_len; + +put_uobj_pd: + if (cmd.flags & IB_MR_REREG_PD) + put_pd_read(pd); + +put_uobjs: + + put_uobj_write(mr->uobject); + + return ret; +} + ssize_t ib_uverbs_dereg_mr(struct ib_uverbs_file *file, const char __user *buf, int in_len, int out_len) diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c index 08219fb3338b..c73b22a257fe 100644 --- a/drivers/infiniband/core/uverbs_main.c +++ b/drivers/infiniband/core/uverbs_main.c @@ -87,6 +87,7 @@ static ssize_t (*uverbs_cmd_table[])(struct ib_uverbs_file *file, [IB_USER_VERBS_CMD_ALLOC_PD] = ib_uverbs_alloc_pd, [IB_USER_VERBS_CMD_DEALLOC_PD] = ib_uverbs_dealloc_pd, [IB_USER_VERBS_CMD_REG_MR] = ib_uverbs_reg_mr, + [IB_USER_VERBS_CMD_REREG_MR] = ib_uverbs_rereg_mr, [IB_USER_VERBS_CMD_DEREG_MR] = ib_uverbs_dereg_mr, [IB_USER_VERBS_CMD_ALLOC_MW] = ib_uverbs_alloc_mw, [IB_USER_VERBS_CMD_DEALLOC_MW] = ib_uverbs_dealloc_mw, |