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711 lines
19 KiB
711 lines
19 KiB
/* |
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* Copyright (c) 2013, Cisco Systems, Inc. All rights reserved. |
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* |
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* This software is available to you under a choice of one of two |
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* licenses. You may choose to be licensed under the terms of the GNU |
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* General Public License (GPL) Version 2, available from the file |
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* COPYING in the main directory of this source tree, or the |
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* BSD license below: |
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* |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the following |
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* conditions are met: |
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* |
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* - Redistributions of source code must retain the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer. |
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* |
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* - Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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* |
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* Author: Upinder Malhi <[email protected]> |
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* Author: Anant Deepak <[email protected]> |
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* Author: Cesare Cantu' <[email protected]> |
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* Author: Jeff Squyres <[email protected]> |
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* Author: Kiran Thirumalai <[email protected]> |
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* Author: Xuyang Wang <[email protected]> |
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* Author: Reese Faucette <[email protected]> |
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* |
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*/ |
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#include <linux/module.h> |
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#include <linux/inetdevice.h> |
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#include <linux/init.h> |
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#include <linux/slab.h> |
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#include <linux/errno.h> |
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#include <linux/pci.h> |
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#include <linux/netdevice.h> |
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#include <rdma/ib_user_verbs.h> |
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#include <rdma/ib_addr.h> |
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#include "usnic_abi.h" |
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#include "usnic_common_util.h" |
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#include "usnic_ib.h" |
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#include "usnic_ib_qp_grp.h" |
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#include "usnic_log.h" |
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#include "usnic_fwd.h" |
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#include "usnic_debugfs.h" |
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#include "usnic_ib_verbs.h" |
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#include "usnic_transport.h" |
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#include "usnic_uiom.h" |
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#include "usnic_ib_sysfs.h" |
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unsigned int usnic_log_lvl = USNIC_LOG_LVL_ERR; |
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unsigned int usnic_ib_share_vf = 1; |
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|
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static const char usnic_version[] = |
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DRV_NAME ": Cisco VIC (USNIC) Verbs Driver v" |
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DRV_VERSION " (" DRV_RELDATE ")\n"; |
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|
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static DEFINE_MUTEX(usnic_ib_ibdev_list_lock); |
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static LIST_HEAD(usnic_ib_ibdev_list); |
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|
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/* Callback dump funcs */ |
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static int usnic_ib_dump_vf_hdr(void *obj, char *buf, int buf_sz) |
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{ |
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struct usnic_ib_vf *vf = obj; |
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return scnprintf(buf, buf_sz, "PF: %s ", dev_name(&vf->pf->ib_dev.dev)); |
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} |
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/* End callback dump funcs */ |
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static void usnic_ib_dump_vf(struct usnic_ib_vf *vf, char *buf, int buf_sz) |
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{ |
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usnic_vnic_dump(vf->vnic, buf, buf_sz, vf, |
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usnic_ib_dump_vf_hdr, |
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usnic_ib_qp_grp_dump_hdr, usnic_ib_qp_grp_dump_rows); |
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} |
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void usnic_ib_log_vf(struct usnic_ib_vf *vf) |
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{ |
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char *buf = kzalloc(1000, GFP_KERNEL); |
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if (!buf) |
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return; |
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usnic_ib_dump_vf(vf, buf, 1000); |
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usnic_dbg("%s\n", buf); |
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kfree(buf); |
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} |
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/* Start of netdev section */ |
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static void usnic_ib_qp_grp_modify_active_to_err(struct usnic_ib_dev *us_ibdev) |
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{ |
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struct usnic_ib_ucontext *ctx; |
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struct usnic_ib_qp_grp *qp_grp; |
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enum ib_qp_state cur_state; |
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int status; |
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BUG_ON(!mutex_is_locked(&us_ibdev->usdev_lock)); |
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list_for_each_entry(ctx, &us_ibdev->ctx_list, link) { |
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list_for_each_entry(qp_grp, &ctx->qp_grp_list, link) { |
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cur_state = qp_grp->state; |
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if (cur_state == IB_QPS_INIT || |
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cur_state == IB_QPS_RTR || |
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cur_state == IB_QPS_RTS) { |
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status = usnic_ib_qp_grp_modify(qp_grp, |
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IB_QPS_ERR, |
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NULL); |
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if (status) { |
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usnic_err("Failed to transition qp grp %u from %s to %s\n", |
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qp_grp->grp_id, |
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usnic_ib_qp_grp_state_to_string |
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(cur_state), |
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usnic_ib_qp_grp_state_to_string |
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(IB_QPS_ERR)); |
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} |
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} |
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} |
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} |
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} |
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static void usnic_ib_handle_usdev_event(struct usnic_ib_dev *us_ibdev, |
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unsigned long event) |
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{ |
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struct net_device *netdev; |
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struct ib_event ib_event; |
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memset(&ib_event, 0, sizeof(ib_event)); |
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mutex_lock(&us_ibdev->usdev_lock); |
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netdev = us_ibdev->netdev; |
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switch (event) { |
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case NETDEV_REBOOT: |
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usnic_info("PF Reset on %s\n", dev_name(&us_ibdev->ib_dev.dev)); |
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usnic_ib_qp_grp_modify_active_to_err(us_ibdev); |
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ib_event.event = IB_EVENT_PORT_ERR; |
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ib_event.device = &us_ibdev->ib_dev; |
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ib_event.element.port_num = 1; |
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ib_dispatch_event(&ib_event); |
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break; |
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case NETDEV_UP: |
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case NETDEV_DOWN: |
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case NETDEV_CHANGE: |
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if (!us_ibdev->ufdev->link_up && |
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netif_carrier_ok(netdev)) { |
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usnic_fwd_carrier_up(us_ibdev->ufdev); |
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usnic_info("Link UP on %s\n", |
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dev_name(&us_ibdev->ib_dev.dev)); |
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ib_event.event = IB_EVENT_PORT_ACTIVE; |
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ib_event.device = &us_ibdev->ib_dev; |
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ib_event.element.port_num = 1; |
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ib_dispatch_event(&ib_event); |
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} else if (us_ibdev->ufdev->link_up && |
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!netif_carrier_ok(netdev)) { |
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usnic_fwd_carrier_down(us_ibdev->ufdev); |
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usnic_info("Link DOWN on %s\n", |
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dev_name(&us_ibdev->ib_dev.dev)); |
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usnic_ib_qp_grp_modify_active_to_err(us_ibdev); |
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ib_event.event = IB_EVENT_PORT_ERR; |
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ib_event.device = &us_ibdev->ib_dev; |
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ib_event.element.port_num = 1; |
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ib_dispatch_event(&ib_event); |
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} else { |
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usnic_dbg("Ignoring %s on %s\n", |
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netdev_cmd_to_name(event), |
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dev_name(&us_ibdev->ib_dev.dev)); |
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} |
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break; |
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case NETDEV_CHANGEADDR: |
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if (!memcmp(us_ibdev->ufdev->mac, netdev->dev_addr, |
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sizeof(us_ibdev->ufdev->mac))) { |
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usnic_dbg("Ignoring addr change on %s\n", |
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dev_name(&us_ibdev->ib_dev.dev)); |
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} else { |
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usnic_info(" %s old mac: %pM new mac: %pM\n", |
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dev_name(&us_ibdev->ib_dev.dev), |
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us_ibdev->ufdev->mac, |
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netdev->dev_addr); |
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usnic_fwd_set_mac(us_ibdev->ufdev, netdev->dev_addr); |
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usnic_ib_qp_grp_modify_active_to_err(us_ibdev); |
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ib_event.event = IB_EVENT_GID_CHANGE; |
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ib_event.device = &us_ibdev->ib_dev; |
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ib_event.element.port_num = 1; |
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ib_dispatch_event(&ib_event); |
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} |
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break; |
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case NETDEV_CHANGEMTU: |
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if (us_ibdev->ufdev->mtu != netdev->mtu) { |
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usnic_info("MTU Change on %s old: %u new: %u\n", |
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dev_name(&us_ibdev->ib_dev.dev), |
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us_ibdev->ufdev->mtu, netdev->mtu); |
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usnic_fwd_set_mtu(us_ibdev->ufdev, netdev->mtu); |
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usnic_ib_qp_grp_modify_active_to_err(us_ibdev); |
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} else { |
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usnic_dbg("Ignoring MTU change on %s\n", |
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dev_name(&us_ibdev->ib_dev.dev)); |
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} |
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break; |
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default: |
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usnic_dbg("Ignoring event %s on %s", |
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netdev_cmd_to_name(event), |
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dev_name(&us_ibdev->ib_dev.dev)); |
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} |
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mutex_unlock(&us_ibdev->usdev_lock); |
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} |
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static int usnic_ib_netdevice_event(struct notifier_block *notifier, |
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unsigned long event, void *ptr) |
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{ |
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struct usnic_ib_dev *us_ibdev; |
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struct ib_device *ibdev; |
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struct net_device *netdev = netdev_notifier_info_to_dev(ptr); |
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ibdev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_USNIC); |
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if (!ibdev) |
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return NOTIFY_DONE; |
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us_ibdev = container_of(ibdev, struct usnic_ib_dev, ib_dev); |
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usnic_ib_handle_usdev_event(us_ibdev, event); |
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ib_device_put(ibdev); |
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return NOTIFY_DONE; |
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} |
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static struct notifier_block usnic_ib_netdevice_notifier = { |
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.notifier_call = usnic_ib_netdevice_event |
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}; |
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/* End of netdev section */ |
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/* Start of inet section */ |
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static int usnic_ib_handle_inet_event(struct usnic_ib_dev *us_ibdev, |
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unsigned long event, void *ptr) |
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{ |
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struct in_ifaddr *ifa = ptr; |
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struct ib_event ib_event; |
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mutex_lock(&us_ibdev->usdev_lock); |
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switch (event) { |
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case NETDEV_DOWN: |
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usnic_info("%s via ip notifiers", |
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netdev_cmd_to_name(event)); |
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usnic_fwd_del_ipaddr(us_ibdev->ufdev); |
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usnic_ib_qp_grp_modify_active_to_err(us_ibdev); |
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ib_event.event = IB_EVENT_GID_CHANGE; |
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ib_event.device = &us_ibdev->ib_dev; |
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ib_event.element.port_num = 1; |
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ib_dispatch_event(&ib_event); |
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break; |
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case NETDEV_UP: |
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usnic_fwd_add_ipaddr(us_ibdev->ufdev, ifa->ifa_address); |
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usnic_info("%s via ip notifiers: ip %pI4", |
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netdev_cmd_to_name(event), |
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&us_ibdev->ufdev->inaddr); |
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ib_event.event = IB_EVENT_GID_CHANGE; |
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ib_event.device = &us_ibdev->ib_dev; |
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ib_event.element.port_num = 1; |
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ib_dispatch_event(&ib_event); |
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break; |
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default: |
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usnic_info("Ignoring event %s on %s", |
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netdev_cmd_to_name(event), |
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dev_name(&us_ibdev->ib_dev.dev)); |
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} |
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mutex_unlock(&us_ibdev->usdev_lock); |
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return NOTIFY_DONE; |
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} |
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static int usnic_ib_inetaddr_event(struct notifier_block *notifier, |
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unsigned long event, void *ptr) |
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{ |
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struct usnic_ib_dev *us_ibdev; |
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struct in_ifaddr *ifa = ptr; |
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struct net_device *netdev = ifa->ifa_dev->dev; |
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struct ib_device *ibdev; |
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ibdev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_USNIC); |
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if (!ibdev) |
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return NOTIFY_DONE; |
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us_ibdev = container_of(ibdev, struct usnic_ib_dev, ib_dev); |
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usnic_ib_handle_inet_event(us_ibdev, event, ptr); |
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ib_device_put(ibdev); |
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return NOTIFY_DONE; |
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} |
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static struct notifier_block usnic_ib_inetaddr_notifier = { |
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.notifier_call = usnic_ib_inetaddr_event |
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}; |
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/* End of inet section*/ |
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static int usnic_port_immutable(struct ib_device *ibdev, u32 port_num, |
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struct ib_port_immutable *immutable) |
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{ |
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struct ib_port_attr attr; |
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int err; |
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immutable->core_cap_flags = RDMA_CORE_PORT_USNIC; |
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err = ib_query_port(ibdev, port_num, &attr); |
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if (err) |
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return err; |
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immutable->gid_tbl_len = attr.gid_tbl_len; |
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return 0; |
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} |
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static void usnic_get_dev_fw_str(struct ib_device *device, char *str) |
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{ |
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struct usnic_ib_dev *us_ibdev = |
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container_of(device, struct usnic_ib_dev, ib_dev); |
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struct ethtool_drvinfo info; |
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mutex_lock(&us_ibdev->usdev_lock); |
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us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info); |
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mutex_unlock(&us_ibdev->usdev_lock); |
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snprintf(str, IB_FW_VERSION_NAME_MAX, "%s", info.fw_version); |
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} |
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static const struct ib_device_ops usnic_dev_ops = { |
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.owner = THIS_MODULE, |
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.driver_id = RDMA_DRIVER_USNIC, |
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.uverbs_abi_ver = USNIC_UVERBS_ABI_VERSION, |
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.alloc_pd = usnic_ib_alloc_pd, |
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.alloc_ucontext = usnic_ib_alloc_ucontext, |
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.create_cq = usnic_ib_create_cq, |
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.create_qp = usnic_ib_create_qp, |
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.dealloc_pd = usnic_ib_dealloc_pd, |
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.dealloc_ucontext = usnic_ib_dealloc_ucontext, |
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.dereg_mr = usnic_ib_dereg_mr, |
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.destroy_cq = usnic_ib_destroy_cq, |
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.destroy_qp = usnic_ib_destroy_qp, |
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.device_group = &usnic_attr_group, |
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.get_dev_fw_str = usnic_get_dev_fw_str, |
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.get_link_layer = usnic_ib_port_link_layer, |
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.get_port_immutable = usnic_port_immutable, |
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.mmap = usnic_ib_mmap, |
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.modify_qp = usnic_ib_modify_qp, |
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.query_device = usnic_ib_query_device, |
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.query_gid = usnic_ib_query_gid, |
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.query_port = usnic_ib_query_port, |
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.query_qp = usnic_ib_query_qp, |
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.reg_user_mr = usnic_ib_reg_mr, |
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INIT_RDMA_OBJ_SIZE(ib_pd, usnic_ib_pd, ibpd), |
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INIT_RDMA_OBJ_SIZE(ib_cq, usnic_ib_cq, ibcq), |
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INIT_RDMA_OBJ_SIZE(ib_qp, usnic_ib_qp_grp, ibqp), |
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INIT_RDMA_OBJ_SIZE(ib_ucontext, usnic_ib_ucontext, ibucontext), |
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}; |
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/* Start of PF discovery section */ |
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static void *usnic_ib_device_add(struct pci_dev *dev) |
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{ |
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struct usnic_ib_dev *us_ibdev; |
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union ib_gid gid; |
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struct in_device *ind; |
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struct net_device *netdev; |
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int ret; |
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usnic_dbg("\n"); |
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netdev = pci_get_drvdata(dev); |
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us_ibdev = ib_alloc_device(usnic_ib_dev, ib_dev); |
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if (!us_ibdev) { |
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usnic_err("Device %s context alloc failed\n", |
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netdev_name(pci_get_drvdata(dev))); |
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return ERR_PTR(-EFAULT); |
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} |
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us_ibdev->ufdev = usnic_fwd_dev_alloc(dev); |
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if (!us_ibdev->ufdev) { |
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usnic_err("Failed to alloc ufdev for %s\n", pci_name(dev)); |
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goto err_dealloc; |
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} |
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mutex_init(&us_ibdev->usdev_lock); |
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INIT_LIST_HEAD(&us_ibdev->vf_dev_list); |
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INIT_LIST_HEAD(&us_ibdev->ctx_list); |
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us_ibdev->pdev = dev; |
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us_ibdev->netdev = pci_get_drvdata(dev); |
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us_ibdev->ib_dev.node_type = RDMA_NODE_USNIC_UDP; |
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us_ibdev->ib_dev.phys_port_cnt = USNIC_IB_PORT_CNT; |
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us_ibdev->ib_dev.num_comp_vectors = USNIC_IB_NUM_COMP_VECTORS; |
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us_ibdev->ib_dev.dev.parent = &dev->dev; |
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ib_set_device_ops(&us_ibdev->ib_dev, &usnic_dev_ops); |
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ret = ib_device_set_netdev(&us_ibdev->ib_dev, us_ibdev->netdev, 1); |
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if (ret) |
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goto err_fwd_dealloc; |
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dma_set_max_seg_size(&dev->dev, SZ_2G); |
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if (ib_register_device(&us_ibdev->ib_dev, "usnic_%d", &dev->dev)) |
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goto err_fwd_dealloc; |
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usnic_fwd_set_mtu(us_ibdev->ufdev, us_ibdev->netdev->mtu); |
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usnic_fwd_set_mac(us_ibdev->ufdev, us_ibdev->netdev->dev_addr); |
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if (netif_carrier_ok(us_ibdev->netdev)) |
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usnic_fwd_carrier_up(us_ibdev->ufdev); |
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rcu_read_lock(); |
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ind = __in_dev_get_rcu(netdev); |
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if (ind) { |
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const struct in_ifaddr *ifa; |
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ifa = rcu_dereference(ind->ifa_list); |
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if (ifa) |
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usnic_fwd_add_ipaddr(us_ibdev->ufdev, ifa->ifa_address); |
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} |
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rcu_read_unlock(); |
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usnic_mac_ip_to_gid(us_ibdev->netdev->perm_addr, |
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us_ibdev->ufdev->inaddr, &gid.raw[0]); |
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memcpy(&us_ibdev->ib_dev.node_guid, &gid.global.interface_id, |
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sizeof(gid.global.interface_id)); |
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kref_init(&us_ibdev->vf_cnt); |
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usnic_info("Added ibdev: %s netdev: %s with mac %pM Link: %u MTU: %u\n", |
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dev_name(&us_ibdev->ib_dev.dev), |
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netdev_name(us_ibdev->netdev), us_ibdev->ufdev->mac, |
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us_ibdev->ufdev->link_up, us_ibdev->ufdev->mtu); |
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return us_ibdev; |
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err_fwd_dealloc: |
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usnic_fwd_dev_free(us_ibdev->ufdev); |
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err_dealloc: |
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usnic_err("failed -- deallocing device\n"); |
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ib_dealloc_device(&us_ibdev->ib_dev); |
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return NULL; |
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} |
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|
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static void usnic_ib_device_remove(struct usnic_ib_dev *us_ibdev) |
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{ |
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usnic_info("Unregistering %s\n", dev_name(&us_ibdev->ib_dev.dev)); |
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usnic_ib_sysfs_unregister_usdev(us_ibdev); |
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usnic_fwd_dev_free(us_ibdev->ufdev); |
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ib_unregister_device(&us_ibdev->ib_dev); |
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ib_dealloc_device(&us_ibdev->ib_dev); |
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} |
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|
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static void usnic_ib_undiscover_pf(struct kref *kref) |
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{ |
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struct usnic_ib_dev *us_ibdev, *tmp; |
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struct pci_dev *dev; |
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bool found = false; |
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dev = container_of(kref, struct usnic_ib_dev, vf_cnt)->pdev; |
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mutex_lock(&usnic_ib_ibdev_list_lock); |
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list_for_each_entry_safe(us_ibdev, tmp, |
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&usnic_ib_ibdev_list, ib_dev_link) { |
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if (us_ibdev->pdev == dev) { |
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list_del(&us_ibdev->ib_dev_link); |
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found = true; |
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break; |
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} |
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} |
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|
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|
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mutex_unlock(&usnic_ib_ibdev_list_lock); |
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if (found) |
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usnic_ib_device_remove(us_ibdev); |
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else |
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WARN(1, "Failed to remove PF %s\n", pci_name(dev)); |
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} |
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|
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static struct usnic_ib_dev *usnic_ib_discover_pf(struct usnic_vnic *vnic) |
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{ |
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struct usnic_ib_dev *us_ibdev; |
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struct pci_dev *parent_pci, *vf_pci; |
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int err; |
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|
|
vf_pci = usnic_vnic_get_pdev(vnic); |
|
parent_pci = pci_physfn(vf_pci); |
|
|
|
BUG_ON(!parent_pci); |
|
|
|
mutex_lock(&usnic_ib_ibdev_list_lock); |
|
list_for_each_entry(us_ibdev, &usnic_ib_ibdev_list, ib_dev_link) { |
|
if (us_ibdev->pdev == parent_pci) { |
|
kref_get(&us_ibdev->vf_cnt); |
|
goto out; |
|
} |
|
} |
|
|
|
us_ibdev = usnic_ib_device_add(parent_pci); |
|
if (IS_ERR_OR_NULL(us_ibdev)) { |
|
us_ibdev = us_ibdev ? us_ibdev : ERR_PTR(-EFAULT); |
|
goto out; |
|
} |
|
|
|
err = usnic_ib_sysfs_register_usdev(us_ibdev); |
|
if (err) { |
|
usnic_ib_device_remove(us_ibdev); |
|
us_ibdev = ERR_PTR(err); |
|
goto out; |
|
} |
|
|
|
list_add(&us_ibdev->ib_dev_link, &usnic_ib_ibdev_list); |
|
out: |
|
mutex_unlock(&usnic_ib_ibdev_list_lock); |
|
return us_ibdev; |
|
} |
|
/* End of PF discovery section */ |
|
|
|
/* Start of PCI section */ |
|
|
|
static const struct pci_device_id usnic_ib_pci_ids[] = { |
|
{PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_VIC_USPACE_NIC)}, |
|
{0,} |
|
}; |
|
|
|
static int usnic_ib_pci_probe(struct pci_dev *pdev, |
|
const struct pci_device_id *id) |
|
{ |
|
int err; |
|
struct usnic_ib_dev *pf; |
|
struct usnic_ib_vf *vf; |
|
enum usnic_vnic_res_type res_type; |
|
|
|
vf = kzalloc(sizeof(*vf), GFP_KERNEL); |
|
if (!vf) |
|
return -ENOMEM; |
|
|
|
err = pci_enable_device(pdev); |
|
if (err) { |
|
usnic_err("Failed to enable %s with err %d\n", |
|
pci_name(pdev), err); |
|
goto out_clean_vf; |
|
} |
|
|
|
err = pci_request_regions(pdev, DRV_NAME); |
|
if (err) { |
|
usnic_err("Failed to request region for %s with err %d\n", |
|
pci_name(pdev), err); |
|
goto out_disable_device; |
|
} |
|
|
|
pci_set_master(pdev); |
|
pci_set_drvdata(pdev, vf); |
|
|
|
vf->vnic = usnic_vnic_alloc(pdev); |
|
if (IS_ERR_OR_NULL(vf->vnic)) { |
|
err = vf->vnic ? PTR_ERR(vf->vnic) : -ENOMEM; |
|
usnic_err("Failed to alloc vnic for %s with err %d\n", |
|
pci_name(pdev), err); |
|
goto out_release_regions; |
|
} |
|
|
|
pf = usnic_ib_discover_pf(vf->vnic); |
|
if (IS_ERR_OR_NULL(pf)) { |
|
usnic_err("Failed to discover pf of vnic %s with err%ld\n", |
|
pci_name(pdev), PTR_ERR(pf)); |
|
err = pf ? PTR_ERR(pf) : -EFAULT; |
|
goto out_clean_vnic; |
|
} |
|
|
|
vf->pf = pf; |
|
mutex_init(&vf->lock); |
|
mutex_lock(&pf->usdev_lock); |
|
list_add_tail(&vf->link, &pf->vf_dev_list); |
|
/* |
|
* Save max settings (will be same for each VF, easier to re-write than |
|
* to say "if (!set) { set_values(); set=1; } |
|
*/ |
|
for (res_type = USNIC_VNIC_RES_TYPE_EOL+1; |
|
res_type < USNIC_VNIC_RES_TYPE_MAX; |
|
res_type++) { |
|
pf->vf_res_cnt[res_type] = usnic_vnic_res_cnt(vf->vnic, |
|
res_type); |
|
} |
|
|
|
mutex_unlock(&pf->usdev_lock); |
|
|
|
usnic_info("Registering usnic VF %s into PF %s\n", pci_name(pdev), |
|
dev_name(&pf->ib_dev.dev)); |
|
usnic_ib_log_vf(vf); |
|
return 0; |
|
|
|
out_clean_vnic: |
|
usnic_vnic_free(vf->vnic); |
|
out_release_regions: |
|
pci_set_drvdata(pdev, NULL); |
|
pci_clear_master(pdev); |
|
pci_release_regions(pdev); |
|
out_disable_device: |
|
pci_disable_device(pdev); |
|
out_clean_vf: |
|
kfree(vf); |
|
return err; |
|
} |
|
|
|
static void usnic_ib_pci_remove(struct pci_dev *pdev) |
|
{ |
|
struct usnic_ib_vf *vf = pci_get_drvdata(pdev); |
|
struct usnic_ib_dev *pf = vf->pf; |
|
|
|
mutex_lock(&pf->usdev_lock); |
|
list_del(&vf->link); |
|
mutex_unlock(&pf->usdev_lock); |
|
|
|
kref_put(&pf->vf_cnt, usnic_ib_undiscover_pf); |
|
usnic_vnic_free(vf->vnic); |
|
pci_set_drvdata(pdev, NULL); |
|
pci_clear_master(pdev); |
|
pci_release_regions(pdev); |
|
pci_disable_device(pdev); |
|
kfree(vf); |
|
|
|
usnic_info("Removed VF %s\n", pci_name(pdev)); |
|
} |
|
|
|
/* PCI driver entry points */ |
|
static struct pci_driver usnic_ib_pci_driver = { |
|
.name = DRV_NAME, |
|
.id_table = usnic_ib_pci_ids, |
|
.probe = usnic_ib_pci_probe, |
|
.remove = usnic_ib_pci_remove, |
|
}; |
|
/* End of PCI section */ |
|
|
|
/* Start of module section */ |
|
static int __init usnic_ib_init(void) |
|
{ |
|
int err; |
|
|
|
printk_once(KERN_INFO "%s", usnic_version); |
|
|
|
err = usnic_uiom_init(DRV_NAME); |
|
if (err) { |
|
usnic_err("Unable to initialize umem with err %d\n", err); |
|
return err; |
|
} |
|
|
|
err = pci_register_driver(&usnic_ib_pci_driver); |
|
if (err) { |
|
usnic_err("Unable to register with PCI\n"); |
|
goto out_umem_fini; |
|
} |
|
|
|
err = register_netdevice_notifier(&usnic_ib_netdevice_notifier); |
|
if (err) { |
|
usnic_err("Failed to register netdev notifier\n"); |
|
goto out_pci_unreg; |
|
} |
|
|
|
err = register_inetaddr_notifier(&usnic_ib_inetaddr_notifier); |
|
if (err) { |
|
usnic_err("Failed to register inet addr notifier\n"); |
|
goto out_unreg_netdev_notifier; |
|
} |
|
|
|
err = usnic_transport_init(); |
|
if (err) { |
|
usnic_err("Failed to initialize transport\n"); |
|
goto out_unreg_inetaddr_notifier; |
|
} |
|
|
|
usnic_debugfs_init(); |
|
|
|
return 0; |
|
|
|
out_unreg_inetaddr_notifier: |
|
unregister_inetaddr_notifier(&usnic_ib_inetaddr_notifier); |
|
out_unreg_netdev_notifier: |
|
unregister_netdevice_notifier(&usnic_ib_netdevice_notifier); |
|
out_pci_unreg: |
|
pci_unregister_driver(&usnic_ib_pci_driver); |
|
out_umem_fini: |
|
|
|
return err; |
|
} |
|
|
|
static void __exit usnic_ib_destroy(void) |
|
{ |
|
usnic_dbg("\n"); |
|
usnic_debugfs_exit(); |
|
usnic_transport_fini(); |
|
unregister_inetaddr_notifier(&usnic_ib_inetaddr_notifier); |
|
unregister_netdevice_notifier(&usnic_ib_netdevice_notifier); |
|
pci_unregister_driver(&usnic_ib_pci_driver); |
|
} |
|
|
|
MODULE_DESCRIPTION("Cisco VIC (usNIC) Verbs Driver"); |
|
MODULE_AUTHOR("Upinder Malhi <[email protected]>"); |
|
MODULE_LICENSE("Dual BSD/GPL"); |
|
module_param(usnic_log_lvl, uint, S_IRUGO | S_IWUSR); |
|
module_param(usnic_ib_share_vf, uint, S_IRUGO | S_IWUSR); |
|
MODULE_PARM_DESC(usnic_log_lvl, " Off=0, Err=1, Info=2, Debug=3"); |
|
MODULE_PARM_DESC(usnic_ib_share_vf, "Off=0, On=1 VF sharing amongst QPs"); |
|
MODULE_DEVICE_TABLE(pci, usnic_ib_pci_ids); |
|
|
|
module_init(usnic_ib_init); |
|
module_exit(usnic_ib_destroy); |
|
/* End of module section */
|
|
|