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Diffstat (limited to 'drivers/infiniband/hw/usnic/usnic_ib_main.c')
-rw-r--r--drivers/infiniband/hw/usnic/usnic_ib_main.c708
1 files changed, 708 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/usnic/usnic_ib_main.c b/drivers/infiniband/hw/usnic/usnic_ib_main.c
new file mode 100644
index 0000000000..13b654ddd3
--- /dev/null
+++ b/drivers/infiniband/hw/usnic/usnic_ib_main.c
@@ -0,0 +1,708 @@
+/*
+ * 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 ", dev_name(&vf->pf->ib_dev.dev));
+}
+/* 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 = kzalloc(1000, GFP_KERNEL);
+
+ if (!buf)
+ return;
+
+ usnic_ib_dump_vf(vf, buf, 1000);
+ usnic_dbg("%s\n", buf);
+
+ kfree(buf);
+}
+
+/* Start of netdev section */
+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 transition 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", dev_name(&us_ibdev->ib_dev.dev));
+ 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",
+ dev_name(&us_ibdev->ib_dev.dev));
+ 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",
+ dev_name(&us_ibdev->ib_dev.dev));
+ 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",
+ netdev_cmd_to_name(event),
+ dev_name(&us_ibdev->ib_dev.dev));
+ }
+ 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",
+ dev_name(&us_ibdev->ib_dev.dev));
+ } else {
+ usnic_info(" %s old mac: %pM new mac: %pM\n",
+ dev_name(&us_ibdev->ib_dev.dev),
+ 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",
+ dev_name(&us_ibdev->ib_dev.dev),
+ 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",
+ dev_name(&us_ibdev->ib_dev.dev));
+ }
+ break;
+ default:
+ usnic_dbg("Ignoring event %s on %s",
+ netdev_cmd_to_name(event),
+ dev_name(&us_ibdev->ib_dev.dev));
+ }
+ 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 ib_device *ibdev;
+
+ struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
+
+ ibdev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_USNIC);
+ if (!ibdev)
+ return NOTIFY_DONE;
+
+ us_ibdev = container_of(ibdev, struct usnic_ib_dev, ib_dev);
+ usnic_ib_handle_usdev_event(us_ibdev, event);
+ ib_device_put(ibdev);
+ 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",
+ netdev_cmd_to_name(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",
+ netdev_cmd_to_name(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",
+ netdev_cmd_to_name(event),
+ dev_name(&us_ibdev->ib_dev.dev));
+ }
+ 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;
+ struct ib_device *ibdev;
+
+ ibdev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_USNIC);
+ if (!ibdev)
+ return NOTIFY_DONE;
+
+ us_ibdev = container_of(ibdev, struct usnic_ib_dev, ib_dev);
+ usnic_ib_handle_inet_event(us_ibdev, event, ptr);
+ ib_device_put(ibdev);
+ 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, u32 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->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);
+}
+
+static const struct ib_device_ops usnic_dev_ops = {
+ .owner = THIS_MODULE,
+ .driver_id = RDMA_DRIVER_USNIC,
+ .uverbs_abi_ver = USNIC_UVERBS_ABI_VERSION,
+
+ .alloc_pd = usnic_ib_alloc_pd,
+ .alloc_ucontext = usnic_ib_alloc_ucontext,
+ .create_cq = usnic_ib_create_cq,
+ .create_qp = usnic_ib_create_qp,
+ .dealloc_pd = usnic_ib_dealloc_pd,
+ .dealloc_ucontext = usnic_ib_dealloc_ucontext,
+ .dereg_mr = usnic_ib_dereg_mr,
+ .destroy_cq = usnic_ib_destroy_cq,
+ .destroy_qp = usnic_ib_destroy_qp,
+ .device_group = &usnic_attr_group,
+ .get_dev_fw_str = usnic_get_dev_fw_str,
+ .get_link_layer = usnic_ib_port_link_layer,
+ .get_port_immutable = usnic_port_immutable,
+ .mmap = usnic_ib_mmap,
+ .modify_qp = usnic_ib_modify_qp,
+ .query_device = usnic_ib_query_device,
+ .query_gid = usnic_ib_query_gid,
+ .query_port = usnic_ib_query_port,
+ .query_qp = usnic_ib_query_qp,
+ .reg_user_mr = usnic_ib_reg_mr,
+ INIT_RDMA_OBJ_SIZE(ib_pd, usnic_ib_pd, ibpd),
+ INIT_RDMA_OBJ_SIZE(ib_cq, usnic_ib_cq, ibcq),
+ INIT_RDMA_OBJ_SIZE(ib_qp, usnic_ib_qp_grp, ibqp),
+ INIT_RDMA_OBJ_SIZE(ib_ucontext, usnic_ib_ucontext, ibucontext),
+};
+
+/* 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;
+ int ret;
+
+ usnic_dbg("\n");
+ netdev = pci_get_drvdata(dev);
+
+ us_ibdev = ib_alloc_device(usnic_ib_dev, ib_dev);
+ 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.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;
+
+ ib_set_device_ops(&us_ibdev->ib_dev, &usnic_dev_ops);
+
+ ret = ib_device_set_netdev(&us_ibdev->ib_dev, us_ibdev->netdev, 1);
+ if (ret)
+ goto err_fwd_dealloc;
+
+ dma_set_max_seg_size(&dev->dev, SZ_2G);
+ if (ib_register_device(&us_ibdev->ib_dev, "usnic_%d", &dev->dev))
+ 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);
+
+ rcu_read_lock();
+ ind = __in_dev_get_rcu(netdev);
+ if (ind) {
+ const struct in_ifaddr *ifa;
+
+ ifa = rcu_dereference(ind->ifa_list);
+ if (ifa)
+ usnic_fwd_add_ipaddr(us_ibdev->ufdev, ifa->ifa_address);
+ }
+ rcu_read_unlock();
+
+ 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",
+ dev_name(&us_ibdev->ib_dev.dev),
+ 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", dev_name(&us_ibdev->ib_dev.dev));
+ 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);
+ found = true;
+ break;
+ }
+ }
+
+
+ mutex_unlock(&usnic_ib_ibdev_list_lock);
+ if (found)
+ usnic_ib_device_remove(us_ibdev);
+ else
+ WARN(1, "Failed to remove PF %s\n", pci_name(dev));
+}
+
+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;
+
+ if (!device_iommu_mapped(&pdev->dev)) {
+ usnic_err("IOMMU required but not present or enabled. USNIC QPs will not function w/o enabling IOMMU\n");
+ return -EPERM;
+ }
+
+ 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_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_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 = 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 <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 */