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OpenCloudOS-Kernel/drivers/infiniband/hw/usnic/usnic_ib_main.c

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/*
* Copyright (c) 2013, Cisco Systems, 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
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Author: Upinder Malhi <umalhi@cisco.com>
* Author: Anant Deepak <anadeepa@cisco.com>
* Author: Cesare Cantu' <cantuc@cisco.com>
* Author: Jeff Squyres <jsquyres@cisco.com>
* Author: Kiran Thirumalai <kithirum@cisco.com>
* Author: Xuyang Wang <xuywang@cisco.com>
* Author: Reese Faucette <rfaucett@cisco.com>
*
*/
#include <linux/module.h>
#include <linux/inetdevice.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <rdma/ib_user_verbs.h>
#include <rdma/ib_addr.h>
#include "usnic_abi.h"
#include "usnic_common_util.h"
#include "usnic_ib.h"
#include "usnic_ib_qp_grp.h"
#include "usnic_log.h"
#include "usnic_fwd.h"
#include "usnic_debugfs.h"
#include "usnic_ib_verbs.h"
#include "usnic_transport.h"
#include "usnic_uiom.h"
#include "usnic_ib_sysfs.h"
unsigned int usnic_log_lvl = USNIC_LOG_LVL_ERR;
unsigned int usnic_ib_share_vf = 1;
static const char usnic_version[] =
DRV_NAME ": Cisco VIC (USNIC) Verbs Driver v"
DRV_VERSION " (" DRV_RELDATE ")\n";
static DEFINE_MUTEX(usnic_ib_ibdev_list_lock);
static LIST_HEAD(usnic_ib_ibdev_list);
/* Callback dump funcs */
static int usnic_ib_dump_vf_hdr(void *obj, char *buf, int buf_sz)
{
struct usnic_ib_vf *vf = obj;
return scnprintf(buf, buf_sz, "PF: %s ", vf->pf->ib_dev.name);
}
/* End callback dump funcs */
static void usnic_ib_dump_vf(struct usnic_ib_vf *vf, char *buf, int buf_sz)
{
usnic_vnic_dump(vf->vnic, buf, buf_sz, vf,
usnic_ib_dump_vf_hdr,
usnic_ib_qp_grp_dump_hdr, usnic_ib_qp_grp_dump_rows);
}
void usnic_ib_log_vf(struct usnic_ib_vf *vf)
{
char buf[1000];
usnic_ib_dump_vf(vf, buf, sizeof(buf));
usnic_dbg("%s\n", buf);
}
/* Start of netdev section */
static inline const char *usnic_ib_netdev_event_to_string(unsigned long event)
{
const char *event2str[] = {"NETDEV_NONE", "NETDEV_UP", "NETDEV_DOWN",
"NETDEV_REBOOT", "NETDEV_CHANGE",
"NETDEV_REGISTER", "NETDEV_UNREGISTER", "NETDEV_CHANGEMTU",
"NETDEV_CHANGEADDR", "NETDEV_GOING_DOWN", "NETDEV_FEAT_CHANGE",
"NETDEV_BONDING_FAILOVER", "NETDEV_PRE_UP",
"NETDEV_PRE_TYPE_CHANGE", "NETDEV_POST_TYPE_CHANGE",
"NETDEV_POST_INT", "NETDEV_UNREGISTER_FINAL", "NETDEV_RELEASE",
"NETDEV_NOTIFY_PEERS", "NETDEV_JOIN"
};
if (event >= ARRAY_SIZE(event2str))
return "UNKNOWN_NETDEV_EVENT";
else
return event2str[event];
}
static void usnic_ib_qp_grp_modify_active_to_err(struct usnic_ib_dev *us_ibdev)
{
struct usnic_ib_ucontext *ctx;
struct usnic_ib_qp_grp *qp_grp;
enum ib_qp_state cur_state;
int status;
BUG_ON(!mutex_is_locked(&us_ibdev->usdev_lock));
list_for_each_entry(ctx, &us_ibdev->ctx_list, link) {
list_for_each_entry(qp_grp, &ctx->qp_grp_list, link) {
cur_state = qp_grp->state;
if (cur_state == IB_QPS_INIT ||
cur_state == IB_QPS_RTR ||
cur_state == IB_QPS_RTS) {
status = usnic_ib_qp_grp_modify(qp_grp,
IB_QPS_ERR,
NULL);
if (status) {
usnic_err("Failed to transistion qp grp %u from %s to %s\n",
qp_grp->grp_id,
usnic_ib_qp_grp_state_to_string
(cur_state),
usnic_ib_qp_grp_state_to_string
(IB_QPS_ERR));
}
}
}
}
}
static void usnic_ib_handle_usdev_event(struct usnic_ib_dev *us_ibdev,
unsigned long event)
{
struct net_device *netdev;
struct ib_event ib_event;
memset(&ib_event, 0, sizeof(ib_event));
mutex_lock(&us_ibdev->usdev_lock);
netdev = us_ibdev->netdev;
switch (event) {
case NETDEV_REBOOT:
usnic_info("PF Reset on %s\n", us_ibdev->ib_dev.name);
usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
ib_event.event = IB_EVENT_PORT_ERR;
ib_event.device = &us_ibdev->ib_dev;
ib_event.element.port_num = 1;
ib_dispatch_event(&ib_event);
break;
case NETDEV_UP:
case NETDEV_DOWN:
case NETDEV_CHANGE:
if (!us_ibdev->ufdev->link_up &&
netif_carrier_ok(netdev)) {
usnic_fwd_carrier_up(us_ibdev->ufdev);
usnic_info("Link UP on %s\n", us_ibdev->ib_dev.name);
ib_event.event = IB_EVENT_PORT_ACTIVE;
ib_event.device = &us_ibdev->ib_dev;
ib_event.element.port_num = 1;
ib_dispatch_event(&ib_event);
} else if (us_ibdev->ufdev->link_up &&
!netif_carrier_ok(netdev)) {
usnic_fwd_carrier_down(us_ibdev->ufdev);
usnic_info("Link DOWN on %s\n", us_ibdev->ib_dev.name);
usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
ib_event.event = IB_EVENT_PORT_ERR;
ib_event.device = &us_ibdev->ib_dev;
ib_event.element.port_num = 1;
ib_dispatch_event(&ib_event);
} else {
usnic_dbg("Ignoring %s on %s\n",
usnic_ib_netdev_event_to_string(event),
us_ibdev->ib_dev.name);
}
break;
case NETDEV_CHANGEADDR:
if (!memcmp(us_ibdev->ufdev->mac, netdev->dev_addr,
sizeof(us_ibdev->ufdev->mac))) {
usnic_dbg("Ignoring addr change on %s\n",
us_ibdev->ib_dev.name);
} else {
usnic_info(" %s old mac: %pM new mac: %pM\n",
us_ibdev->ib_dev.name,
us_ibdev->ufdev->mac,
netdev->dev_addr);
usnic_fwd_set_mac(us_ibdev->ufdev, netdev->dev_addr);
usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
ib_event.event = IB_EVENT_GID_CHANGE;
ib_event.device = &us_ibdev->ib_dev;
ib_event.element.port_num = 1;
ib_dispatch_event(&ib_event);
}
break;
case NETDEV_CHANGEMTU:
if (us_ibdev->ufdev->mtu != netdev->mtu) {
usnic_info("MTU Change on %s old: %u new: %u\n",
us_ibdev->ib_dev.name,
us_ibdev->ufdev->mtu, netdev->mtu);
usnic_fwd_set_mtu(us_ibdev->ufdev, netdev->mtu);
usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
} else {
usnic_dbg("Ignoring MTU change on %s\n",
us_ibdev->ib_dev.name);
}
break;
default:
usnic_dbg("Ignoring event %s on %s",
usnic_ib_netdev_event_to_string(event),
us_ibdev->ib_dev.name);
}
mutex_unlock(&us_ibdev->usdev_lock);
}
static int usnic_ib_netdevice_event(struct notifier_block *notifier,
unsigned long event, void *ptr)
{
struct usnic_ib_dev *us_ibdev;
struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
mutex_lock(&usnic_ib_ibdev_list_lock);
list_for_each_entry(us_ibdev, &usnic_ib_ibdev_list, ib_dev_link) {
if (us_ibdev->netdev == netdev) {
usnic_ib_handle_usdev_event(us_ibdev, event);
break;
}
}
mutex_unlock(&usnic_ib_ibdev_list_lock);
return NOTIFY_DONE;
}
static struct notifier_block usnic_ib_netdevice_notifier = {
.notifier_call = usnic_ib_netdevice_event
};
/* End of netdev section */
/* Start of inet section */
static int usnic_ib_handle_inet_event(struct usnic_ib_dev *us_ibdev,
unsigned long event, void *ptr)
{
struct in_ifaddr *ifa = ptr;
struct ib_event ib_event;
mutex_lock(&us_ibdev->usdev_lock);
switch (event) {
case NETDEV_DOWN:
usnic_info("%s via ip notifiers",
usnic_ib_netdev_event_to_string(event));
usnic_fwd_del_ipaddr(us_ibdev->ufdev);
usnic_ib_qp_grp_modify_active_to_err(us_ibdev);
ib_event.event = IB_EVENT_GID_CHANGE;
ib_event.device = &us_ibdev->ib_dev;
ib_event.element.port_num = 1;
ib_dispatch_event(&ib_event);
break;
case NETDEV_UP:
usnic_fwd_add_ipaddr(us_ibdev->ufdev, ifa->ifa_address);
usnic_info("%s via ip notifiers: ip %pI4",
usnic_ib_netdev_event_to_string(event),
&us_ibdev->ufdev->inaddr);
ib_event.event = IB_EVENT_GID_CHANGE;
ib_event.device = &us_ibdev->ib_dev;
ib_event.element.port_num = 1;
ib_dispatch_event(&ib_event);
break;
default:
usnic_info("Ignoring event %s on %s",
usnic_ib_netdev_event_to_string(event),
us_ibdev->ib_dev.name);
}
mutex_unlock(&us_ibdev->usdev_lock);
return NOTIFY_DONE;
}
static int usnic_ib_inetaddr_event(struct notifier_block *notifier,
unsigned long event, void *ptr)
{
struct usnic_ib_dev *us_ibdev;
struct in_ifaddr *ifa = ptr;
struct net_device *netdev = ifa->ifa_dev->dev;
mutex_lock(&usnic_ib_ibdev_list_lock);
list_for_each_entry(us_ibdev, &usnic_ib_ibdev_list, ib_dev_link) {
if (us_ibdev->netdev == netdev) {
usnic_ib_handle_inet_event(us_ibdev, event, ptr);
break;
}
}
mutex_unlock(&usnic_ib_ibdev_list_lock);
return NOTIFY_DONE;
}
static struct notifier_block usnic_ib_inetaddr_notifier = {
.notifier_call = usnic_ib_inetaddr_event
};
/* End of inet section*/
static int usnic_port_immutable(struct ib_device *ibdev, u8 port_num,
struct ib_port_immutable *immutable)
{
struct ib_port_attr attr;
int err;
immutable->core_cap_flags = RDMA_CORE_PORT_USNIC;
err = ib_query_port(ibdev, port_num, &attr);
if (err)
return err;
immutable->pkey_tbl_len = attr.pkey_tbl_len;
immutable->gid_tbl_len = attr.gid_tbl_len;
return 0;
}
static void usnic_get_dev_fw_str(struct ib_device *device, char *str)
{
struct usnic_ib_dev *us_ibdev =
container_of(device, struct usnic_ib_dev, ib_dev);
struct ethtool_drvinfo info;
mutex_lock(&us_ibdev->usdev_lock);
us_ibdev->netdev->ethtool_ops->get_drvinfo(us_ibdev->netdev, &info);
mutex_unlock(&us_ibdev->usdev_lock);
snprintf(str, IB_FW_VERSION_NAME_MAX, "%s", info.fw_version);
}
/* Start of PF discovery section */
static void *usnic_ib_device_add(struct pci_dev *dev)
{
struct usnic_ib_dev *us_ibdev;
union ib_gid gid;
struct in_device *ind;
struct net_device *netdev;
usnic_dbg("\n");
netdev = pci_get_drvdata(dev);
us_ibdev = (struct usnic_ib_dev *)ib_alloc_device(sizeof(*us_ibdev));
if (!us_ibdev) {
usnic_err("Device %s context alloc failed\n",
netdev_name(pci_get_drvdata(dev)));
return ERR_PTR(-EFAULT);
}
us_ibdev->ufdev = usnic_fwd_dev_alloc(dev);
if (!us_ibdev->ufdev) {
usnic_err("Failed to alloc ufdev for %s\n", pci_name(dev));
goto err_dealloc;
}
mutex_init(&us_ibdev->usdev_lock);
INIT_LIST_HEAD(&us_ibdev->vf_dev_list);
INIT_LIST_HEAD(&us_ibdev->ctx_list);
us_ibdev->pdev = dev;
us_ibdev->netdev = pci_get_drvdata(dev);
us_ibdev->ib_dev.owner = THIS_MODULE;
us_ibdev->ib_dev.node_type = RDMA_NODE_USNIC_UDP;
us_ibdev->ib_dev.phys_port_cnt = USNIC_IB_PORT_CNT;
us_ibdev->ib_dev.num_comp_vectors = USNIC_IB_NUM_COMP_VECTORS;
us_ibdev->ib_dev.dev.parent = &dev->dev;
us_ibdev->ib_dev.uverbs_abi_ver = USNIC_UVERBS_ABI_VERSION;
strlcpy(us_ibdev->ib_dev.name, "usnic_%d", IB_DEVICE_NAME_MAX);
us_ibdev->ib_dev.uverbs_cmd_mask =
(1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
(1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
(1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
(1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
(1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
(1ull << IB_USER_VERBS_CMD_REG_MR) |
(1ull << IB_USER_VERBS_CMD_DEREG_MR) |
(1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
(1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
(1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
(1ull << IB_USER_VERBS_CMD_CREATE_QP) |
(1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
(1ull << IB_USER_VERBS_CMD_QUERY_QP) |
(1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
(1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) |
(1ull << IB_USER_VERBS_CMD_DETACH_MCAST) |
(1ull << IB_USER_VERBS_CMD_OPEN_QP);
us_ibdev->ib_dev.query_device = usnic_ib_query_device;
us_ibdev->ib_dev.query_port = usnic_ib_query_port;
us_ibdev->ib_dev.query_pkey = usnic_ib_query_pkey;
us_ibdev->ib_dev.query_gid = usnic_ib_query_gid;
us_ibdev->ib_dev.get_netdev = usnic_get_netdev;
us_ibdev->ib_dev.get_link_layer = usnic_ib_port_link_layer;
us_ibdev->ib_dev.alloc_pd = usnic_ib_alloc_pd;
us_ibdev->ib_dev.dealloc_pd = usnic_ib_dealloc_pd;
us_ibdev->ib_dev.create_qp = usnic_ib_create_qp;
us_ibdev->ib_dev.modify_qp = usnic_ib_modify_qp;
us_ibdev->ib_dev.query_qp = usnic_ib_query_qp;
us_ibdev->ib_dev.destroy_qp = usnic_ib_destroy_qp;
us_ibdev->ib_dev.create_cq = usnic_ib_create_cq;
us_ibdev->ib_dev.destroy_cq = usnic_ib_destroy_cq;
us_ibdev->ib_dev.reg_user_mr = usnic_ib_reg_mr;
us_ibdev->ib_dev.dereg_mr = usnic_ib_dereg_mr;
us_ibdev->ib_dev.alloc_ucontext = usnic_ib_alloc_ucontext;
us_ibdev->ib_dev.dealloc_ucontext = usnic_ib_dealloc_ucontext;
us_ibdev->ib_dev.mmap = usnic_ib_mmap;
us_ibdev->ib_dev.create_ah = usnic_ib_create_ah;
us_ibdev->ib_dev.destroy_ah = usnic_ib_destroy_ah;
us_ibdev->ib_dev.post_send = usnic_ib_post_send;
us_ibdev->ib_dev.post_recv = usnic_ib_post_recv;
us_ibdev->ib_dev.poll_cq = usnic_ib_poll_cq;
us_ibdev->ib_dev.req_notify_cq = usnic_ib_req_notify_cq;
us_ibdev->ib_dev.get_dma_mr = usnic_ib_get_dma_mr;
us_ibdev->ib_dev.get_port_immutable = usnic_port_immutable;
us_ibdev->ib_dev.get_dev_fw_str = usnic_get_dev_fw_str;
if (ib_register_device(&us_ibdev->ib_dev, NULL))
goto err_fwd_dealloc;
usnic_fwd_set_mtu(us_ibdev->ufdev, us_ibdev->netdev->mtu);
usnic_fwd_set_mac(us_ibdev->ufdev, us_ibdev->netdev->dev_addr);
if (netif_carrier_ok(us_ibdev->netdev))
usnic_fwd_carrier_up(us_ibdev->ufdev);
ind = in_dev_get(netdev);
if (ind->ifa_list)
usnic_fwd_add_ipaddr(us_ibdev->ufdev,
ind->ifa_list->ifa_address);
in_dev_put(ind);
usnic_mac_ip_to_gid(us_ibdev->netdev->perm_addr,
us_ibdev->ufdev->inaddr, &gid.raw[0]);
memcpy(&us_ibdev->ib_dev.node_guid, &gid.global.interface_id,
sizeof(gid.global.interface_id));
kref_init(&us_ibdev->vf_cnt);
usnic_info("Added ibdev: %s netdev: %s with mac %pM Link: %u MTU: %u\n",
us_ibdev->ib_dev.name, netdev_name(us_ibdev->netdev),
us_ibdev->ufdev->mac, us_ibdev->ufdev->link_up,
us_ibdev->ufdev->mtu);
return us_ibdev;
err_fwd_dealloc:
usnic_fwd_dev_free(us_ibdev->ufdev);
err_dealloc:
usnic_err("failed -- deallocing device\n");
ib_dealloc_device(&us_ibdev->ib_dev);
return NULL;
}
static void usnic_ib_device_remove(struct usnic_ib_dev *us_ibdev)
{
usnic_info("Unregistering %s\n", us_ibdev->ib_dev.name);
usnic_ib_sysfs_unregister_usdev(us_ibdev);
usnic_fwd_dev_free(us_ibdev->ufdev);
ib_unregister_device(&us_ibdev->ib_dev);
ib_dealloc_device(&us_ibdev->ib_dev);
}
static void usnic_ib_undiscover_pf(struct kref *kref)
{
struct usnic_ib_dev *us_ibdev, *tmp;
struct pci_dev *dev;
bool found = false;
dev = container_of(kref, struct usnic_ib_dev, vf_cnt)->pdev;
mutex_lock(&usnic_ib_ibdev_list_lock);
list_for_each_entry_safe(us_ibdev, tmp,
&usnic_ib_ibdev_list, ib_dev_link) {
if (us_ibdev->pdev == dev) {
list_del(&us_ibdev->ib_dev_link);
usnic_ib_device_remove(us_ibdev);
found = true;
break;
}
}
WARN(!found, "Failed to remove PF %s\n", pci_name(dev));
mutex_unlock(&usnic_ib_ibdev_list_lock);
}
static struct usnic_ib_dev *usnic_ib_discover_pf(struct usnic_vnic *vnic)
{
struct usnic_ib_dev *us_ibdev;
struct pci_dev *parent_pci, *vf_pci;
int err;
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;
spin_lock_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),
pf->ib_dev.name);
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 initalize 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:
usnic_uiom_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);
usnic_uiom_fini();
}
MODULE_DESCRIPTION("Cisco VIC (usNIC) Verbs Driver");
MODULE_AUTHOR("Upinder Malhi <umalhi@cisco.com>");
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 */
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