X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Finfiniband%2Fcore%2Fagent.c;h=ecd1a3057c61bf41e9f09c5be5727de78866620d;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=23d1957c4b29ef254d197375bedc568d3bff990a;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git diff --git a/drivers/infiniband/core/agent.c b/drivers/infiniband/core/agent.c index 23d1957c4..ecd1a3057 100644 --- a/drivers/infiniband/core/agent.c +++ b/drivers/infiniband/core/agent.c @@ -1,9 +1,10 @@ /* - * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved. - * Copyright (c) 2004 Infinicon Corporation. All rights reserved. - * Copyright (c) 2004 Intel Corporation. All rights reserved. - * Copyright (c) 2004 Topspin Corporation. All rights reserved. - * Copyright (c) 2004 Voltaire Corporation. All rights reserved. + * Copyright (c) 2004, 2005 Mellanox Technologies Ltd. All rights reserved. + * Copyright (c) 2004, 2005 Infinicon Corporation. All rights reserved. + * Copyright (c) 2004, 2005 Intel Corporation. All rights reserved. + * Copyright (c) 2004, 2005 Topspin Corporation. All rights reserved. + * Copyright (c) 2004, 2005 Voltaire Corporation. All rights reserved. + * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU @@ -36,310 +37,143 @@ * $Id: agent.c 1389 2004-12-27 22:56:47Z roland $ */ -#include +#include +#include -#include +#include "agent.h" +#include "smi.h" -#include +#define SPFX "ib_agent: " -#include "smi.h" -#include "agent_priv.h" -#include "mad_priv.h" -#include "agent.h" +struct ib_agent_port_private { + struct list_head port_list; + struct ib_mad_agent *agent[2]; +}; -spinlock_t ib_agent_port_list_lock; +static DEFINE_SPINLOCK(ib_agent_port_list_lock); static LIST_HEAD(ib_agent_port_list); -/* - * Caller must hold ib_agent_port_list_lock - */ -static inline struct ib_agent_port_private * -__ib_get_agent_port(struct ib_device *device, int port_num, - struct ib_mad_agent *mad_agent) +static struct ib_agent_port_private * +__ib_get_agent_port(struct ib_device *device, int port_num) { struct ib_agent_port_private *entry; - BUG_ON(!(!!device ^ !!mad_agent)); /* Exactly one MUST be (!NULL) */ - - if (device) { - list_for_each_entry(entry, &ib_agent_port_list, port_list) { - if (entry->smp_agent->device == device && - entry->port_num == port_num) - return entry; - } - } else { - list_for_each_entry(entry, &ib_agent_port_list, port_list) { - if ((entry->smp_agent == mad_agent) || - (entry->perf_mgmt_agent == mad_agent)) - return entry; - } + list_for_each_entry(entry, &ib_agent_port_list, port_list) { + if (entry->agent[0]->device == device && + entry->agent[0]->port_num == port_num) + return entry; } return NULL; } -static inline struct ib_agent_port_private * -ib_get_agent_port(struct ib_device *device, int port_num, - struct ib_mad_agent *mad_agent) +static struct ib_agent_port_private * +ib_get_agent_port(struct ib_device *device, int port_num) { struct ib_agent_port_private *entry; unsigned long flags; spin_lock_irqsave(&ib_agent_port_list_lock, flags); - entry = __ib_get_agent_port(device, port_num, mad_agent); + entry = __ib_get_agent_port(device, port_num); spin_unlock_irqrestore(&ib_agent_port_list_lock, flags); - return entry; } -int smi_check_local_dr_smp(struct ib_smp *smp, - struct ib_device *device, - int port_num) +int agent_send_response(struct ib_mad *mad, struct ib_grh *grh, + struct ib_wc *wc, struct ib_device *device, + int port_num, int qpn) { struct ib_agent_port_private *port_priv; + struct ib_mad_agent *agent; + struct ib_mad_send_buf *send_buf; + struct ib_ah *ah; + int ret; - if (smp->mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) - return 1; - port_priv = ib_get_agent_port(device, port_num, NULL); + port_priv = ib_get_agent_port(device, port_num); if (!port_priv) { - printk(KERN_DEBUG SPFX "smi_check_local_dr_smp %s port %d " - "not open\n", - device->name, port_num); - return 1; - } - - return smi_check_local_smp(port_priv->smp_agent, smp); -} - -static int agent_mad_send(struct ib_mad_agent *mad_agent, - struct ib_agent_port_private *port_priv, - struct ib_mad_private *mad_priv, - struct ib_grh *grh, - struct ib_wc *wc) -{ - struct ib_agent_send_wr *agent_send_wr; - struct ib_sge gather_list; - struct ib_send_wr send_wr; - struct ib_send_wr *bad_send_wr; - struct ib_ah_attr ah_attr; - unsigned long flags; - int ret = 1; - - agent_send_wr = kmalloc(sizeof(*agent_send_wr), GFP_KERNEL); - if (!agent_send_wr) - goto out; - agent_send_wr->mad = mad_priv; - - gather_list.addr = dma_map_single(mad_agent->device->dma_device, - &mad_priv->mad, - sizeof(mad_priv->mad), - DMA_TO_DEVICE); - gather_list.length = sizeof(mad_priv->mad); - gather_list.lkey = (*port_priv->mr).lkey; - - send_wr.next = NULL; - send_wr.opcode = IB_WR_SEND; - send_wr.sg_list = &gather_list; - send_wr.num_sge = 1; - send_wr.wr.ud.remote_qpn = wc->src_qp; /* DQPN */ - send_wr.wr.ud.timeout_ms = 0; - send_wr.send_flags = IB_SEND_SIGNALED | IB_SEND_SOLICITED; - - ah_attr.dlid = wc->slid; - ah_attr.port_num = mad_agent->port_num; - ah_attr.src_path_bits = wc->dlid_path_bits; - ah_attr.sl = wc->sl; - ah_attr.static_rate = 0; - ah_attr.ah_flags = 0; /* No GRH */ - if (mad_priv->mad.mad.mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT) { - if (wc->wc_flags & IB_WC_GRH) { - ah_attr.ah_flags = IB_AH_GRH; - /* Should sgid be looked up ? */ - ah_attr.grh.sgid_index = 0; - ah_attr.grh.hop_limit = grh->hop_limit; - ah_attr.grh.flow_label = be32_to_cpup( - &grh->version_tclass_flow) & 0xfffff; - ah_attr.grh.traffic_class = (be32_to_cpup( - &grh->version_tclass_flow) >> 20) & 0xff; - memcpy(ah_attr.grh.dgid.raw, - grh->sgid.raw, - sizeof(ah_attr.grh.dgid)); - } + printk(KERN_ERR SPFX "Unable to find port agent\n"); + return -ENODEV; } - agent_send_wr->ah = ib_create_ah(mad_agent->qp->pd, &ah_attr); - if (IS_ERR(agent_send_wr->ah)) { - printk(KERN_ERR SPFX "No memory for address handle\n"); - kfree(agent_send_wr); - goto out; + agent = port_priv->agent[qpn]; + ah = ib_create_ah_from_wc(agent->qp->pd, wc, grh, port_num); + if (IS_ERR(ah)) { + ret = PTR_ERR(ah); + printk(KERN_ERR SPFX "ib_create_ah_from_wc error:%d\n", ret); + return ret; } - send_wr.wr.ud.ah = agent_send_wr->ah; - if (mad_priv->mad.mad.mad_hdr.mgmt_class == IB_MGMT_CLASS_PERF_MGMT) { - send_wr.wr.ud.pkey_index = wc->pkey_index; - send_wr.wr.ud.remote_qkey = IB_QP1_QKEY; - } else { /* for SMPs */ - send_wr.wr.ud.pkey_index = 0; - send_wr.wr.ud.remote_qkey = 0; + send_buf = ib_create_send_mad(agent, wc->src_qp, wc->pkey_index, 0, + IB_MGMT_MAD_HDR, IB_MGMT_MAD_DATA, + GFP_KERNEL); + if (IS_ERR(send_buf)) { + ret = PTR_ERR(send_buf); + printk(KERN_ERR SPFX "ib_create_send_mad error:%d\n", ret); + goto err1; } - send_wr.wr.ud.mad_hdr = &mad_priv->mad.mad.mad_hdr; - send_wr.wr_id = (unsigned long)agent_send_wr; - pci_unmap_addr_set(agent_send_wr, mapping, gather_list.addr); - - /* Send */ - spin_lock_irqsave(&port_priv->send_list_lock, flags); - if (ib_post_send_mad(mad_agent, &send_wr, &bad_send_wr)) { - spin_unlock_irqrestore(&port_priv->send_list_lock, flags); - dma_unmap_single(mad_agent->device->dma_device, - pci_unmap_addr(agent_send_wr, mapping), - sizeof(mad_priv->mad), - DMA_TO_DEVICE); - ib_destroy_ah(agent_send_wr->ah); - kfree(agent_send_wr); - } else { - list_add_tail(&agent_send_wr->send_list, - &port_priv->send_posted_list); - spin_unlock_irqrestore(&port_priv->send_list_lock, flags); - ret = 0; + memcpy(send_buf->mad, mad, sizeof *mad); + send_buf->ah = ah; + if ((ret = ib_post_send_mad(send_buf, NULL))) { + printk(KERN_ERR SPFX "ib_post_send_mad error:%d\n", ret); + goto err2; } - -out: + return 0; +err2: + ib_free_send_mad(send_buf); +err1: + ib_destroy_ah(ah); return ret; } -int agent_send(struct ib_mad_private *mad, - struct ib_grh *grh, - struct ib_wc *wc, - struct ib_device *device, - int port_num) -{ - struct ib_agent_port_private *port_priv; - struct ib_mad_agent *mad_agent; - - port_priv = ib_get_agent_port(device, port_num, NULL); - if (!port_priv) { - printk(KERN_DEBUG SPFX "agent_send %s port %d not open\n", - device->name, port_num); - return 1; - } - - /* Get mad agent based on mgmt_class in MAD */ - switch (mad->mad.mad.mad_hdr.mgmt_class) { - case IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE: - case IB_MGMT_CLASS_SUBN_LID_ROUTED: - mad_agent = port_priv->smp_agent; - break; - case IB_MGMT_CLASS_PERF_MGMT: - mad_agent = port_priv->perf_mgmt_agent; - break; - default: - return 1; - } - - return agent_mad_send(mad_agent, port_priv, mad, grh, wc); -} - static void agent_send_handler(struct ib_mad_agent *mad_agent, struct ib_mad_send_wc *mad_send_wc) { - struct ib_agent_port_private *port_priv; - struct ib_agent_send_wr *agent_send_wr; - unsigned long flags; - - /* Find matching MAD agent */ - port_priv = ib_get_agent_port(NULL, 0, mad_agent); - if (!port_priv) { - printk(KERN_ERR SPFX "agent_send_handler: no matching MAD " - "agent %p\n", mad_agent); - return; - } - - agent_send_wr = (struct ib_agent_send_wr *)(unsigned long)mad_send_wc->wr_id; - spin_lock_irqsave(&port_priv->send_list_lock, flags); - /* Remove completed send from posted send MAD list */ - list_del(&agent_send_wr->send_list); - spin_unlock_irqrestore(&port_priv->send_list_lock, flags); - - dma_unmap_single(mad_agent->device->dma_device, - pci_unmap_addr(agent_send_wr, mapping), - sizeof(agent_send_wr->mad->mad), - DMA_TO_DEVICE); - - ib_destroy_ah(agent_send_wr->ah); - - /* Release allocated memory */ - kmem_cache_free(ib_mad_cache, agent_send_wr->mad); - kfree(agent_send_wr); + ib_destroy_ah(mad_send_wc->send_buf->ah); + ib_free_send_mad(mad_send_wc->send_buf); } int ib_agent_port_open(struct ib_device *device, int port_num) { - int ret; struct ib_agent_port_private *port_priv; unsigned long flags; - - /* First, check if port already open for SMI */ - port_priv = ib_get_agent_port(device, port_num, NULL); - if (port_priv) { - printk(KERN_DEBUG SPFX "%s port %d already open\n", - device->name, port_num); - return 0; - } + int ret; /* Create new device info */ - port_priv = kmalloc(sizeof *port_priv, GFP_KERNEL); + port_priv = kzalloc(sizeof *port_priv, GFP_KERNEL); if (!port_priv) { printk(KERN_ERR SPFX "No memory for ib_agent_port_private\n"); ret = -ENOMEM; goto error1; } - memset(port_priv, 0, sizeof *port_priv); - port_priv->port_num = port_num; - spin_lock_init(&port_priv->send_list_lock); - INIT_LIST_HEAD(&port_priv->send_posted_list); - - /* Obtain send only MAD agent for SM class (SMI QP) */ - port_priv->smp_agent = ib_register_mad_agent(device, port_num, - IB_QPT_SMI, - NULL, 0, + /* Obtain send only MAD agent for SMI QP */ + port_priv->agent[0] = ib_register_mad_agent(device, port_num, + IB_QPT_SMI, NULL, 0, &agent_send_handler, - NULL, NULL); - - if (IS_ERR(port_priv->smp_agent)) { - ret = PTR_ERR(port_priv->smp_agent); + NULL, NULL); + if (IS_ERR(port_priv->agent[0])) { + ret = PTR_ERR(port_priv->agent[0]); goto error2; } - /* Obtain send only MAD agent for PerfMgmt class (GSI QP) */ - port_priv->perf_mgmt_agent = ib_register_mad_agent(device, port_num, - IB_QPT_GSI, - NULL, 0, - &agent_send_handler, - NULL, NULL); - if (IS_ERR(port_priv->perf_mgmt_agent)) { - ret = PTR_ERR(port_priv->perf_mgmt_agent); + /* Obtain send only MAD agent for GSI QP */ + port_priv->agent[1] = ib_register_mad_agent(device, port_num, + IB_QPT_GSI, NULL, 0, + &agent_send_handler, + NULL, NULL); + if (IS_ERR(port_priv->agent[1])) { + ret = PTR_ERR(port_priv->agent[1]); goto error3; } - port_priv->mr = ib_get_dma_mr(port_priv->smp_agent->qp->pd, - IB_ACCESS_LOCAL_WRITE); - if (IS_ERR(port_priv->mr)) { - printk(KERN_ERR SPFX "Couldn't get DMA MR\n"); - ret = PTR_ERR(port_priv->mr); - goto error4; - } - spin_lock_irqsave(&ib_agent_port_list_lock, flags); list_add_tail(&port_priv->port_list, &ib_agent_port_list); spin_unlock_irqrestore(&ib_agent_port_list_lock, flags); return 0; -error4: - ib_unregister_mad_agent(port_priv->perf_mgmt_agent); error3: - ib_unregister_mad_agent(port_priv->smp_agent); + ib_unregister_mad_agent(port_priv->agent[0]); error2: kfree(port_priv); error1: @@ -352,7 +186,7 @@ int ib_agent_port_close(struct ib_device *device, int port_num) unsigned long flags; spin_lock_irqsave(&ib_agent_port_list_lock, flags); - port_priv = __ib_get_agent_port(device, port_num, NULL); + 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); @@ -361,11 +195,8 @@ int ib_agent_port_close(struct ib_device *device, int port_num) list_del(&port_priv->port_list); spin_unlock_irqrestore(&ib_agent_port_list_lock, flags); - ib_dereg_mr(port_priv->mr); - - ib_unregister_mad_agent(port_priv->perf_mgmt_agent); - ib_unregister_mad_agent(port_priv->smp_agent); + ib_unregister_mad_agent(port_priv->agent[1]); + ib_unregister_mad_agent(port_priv->agent[0]); kfree(port_priv); - return 0; }