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android-kvm / linux / a440e4d7618cbe232e4f96dea805bcb89f79b18c / . / drivers / infiniband / hw / i40iw / i40iw_main.c
blob: 584932d3cc44b93c844378c922e5cbdceadb75fd [file] [log] [blame]
/*******************************************************************************
*
* Copyright (c) 2015-2016 Intel Corporation. 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
* OpenFabrics.org 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.
*
*******************************************************************************/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/if_vlan.h>
#include <net/addrconf.h>
#include "i40iw.h"
#include "i40iw_register.h"
#include <net/netevent.h>
#define CLIENT_IW_INTERFACE_VERSION_MAJOR 0
#define CLIENT_IW_INTERFACE_VERSION_MINOR 01
#define CLIENT_IW_INTERFACE_VERSION_BUILD 00
#define DRV_VERSION_MAJOR 0
#define DRV_VERSION_MINOR 5
#define DRV_VERSION_BUILD 123
#define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
__stringify(DRV_VERSION_MINOR) "." __stringify(DRV_VERSION_BUILD)
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "debug flags: 0=disabled (default), 0x7fffffff=all");
static int resource_profile;
module_param(resource_profile, int, 0644);
MODULE_PARM_DESC(resource_profile,
"Resource Profile: 0=no VF RDMA support (default), 1=Weighted VF, 2=Even Distribution");
static int max_rdma_vfs = 32;
module_param(max_rdma_vfs, int, 0644);
MODULE_PARM_DESC(max_rdma_vfs, "Maximum VF count: 0-32 32=default");
static int mpa_version = 2;
module_param(mpa_version, int, 0644);
MODULE_PARM_DESC(mpa_version, "MPA version to be used in MPA Req/Resp 1 or 2");
MODULE_AUTHOR("Intel Corporation, <e1000-rdma@lists.sourceforge.net>");
MODULE_DESCRIPTION("Intel(R) Ethernet Connection X722 iWARP RDMA Driver");
MODULE_LICENSE("Dual BSD/GPL");
static struct i40e_client i40iw_client;
static char i40iw_client_name[I40E_CLIENT_STR_LENGTH] = "i40iw";
static LIST_HEAD(i40iw_handlers);
static spinlock_t i40iw_handler_lock;
static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev,
u32 vf_id, u8 *msg, u16 len);
static struct notifier_block i40iw_inetaddr_notifier = {
.notifier_call = i40iw_inetaddr_event
};
static struct notifier_block i40iw_inetaddr6_notifier = {
.notifier_call = i40iw_inet6addr_event
};
static struct notifier_block i40iw_net_notifier = {
.notifier_call = i40iw_net_event
};
static struct notifier_block i40iw_netdevice_notifier = {
.notifier_call = i40iw_netdevice_event
};
/**
* i40iw_find_i40e_handler - find a handler given a client info
* @ldev: pointer to a client info
*/
static struct i40iw_handler *i40iw_find_i40e_handler(struct i40e_info *ldev)
{
struct i40iw_handler *hdl;
unsigned long flags;
spin_lock_irqsave(&i40iw_handler_lock, flags);
list_for_each_entry(hdl, &i40iw_handlers, list) {
if (hdl->ldev.netdev == ldev->netdev) {
spin_unlock_irqrestore(&i40iw_handler_lock, flags);
return hdl;
}
}
spin_unlock_irqrestore(&i40iw_handler_lock, flags);
return NULL;
}
/**
* i40iw_find_netdev - find a handler given a netdev
* @netdev: pointer to net_device
*/
struct i40iw_handler *i40iw_find_netdev(struct net_device *netdev)
{
struct i40iw_handler *hdl;
unsigned long flags;
spin_lock_irqsave(&i40iw_handler_lock, flags);
list_for_each_entry(hdl, &i40iw_handlers, list) {
if (hdl->ldev.netdev == netdev) {
spin_unlock_irqrestore(&i40iw_handler_lock, flags);
return hdl;
}
}
spin_unlock_irqrestore(&i40iw_handler_lock, flags);
return NULL;
}
/**
* i40iw_add_handler - add a handler to the list
* @hdl: handler to be added to the handler list
*/
static void i40iw_add_handler(struct i40iw_handler *hdl)
{
unsigned long flags;
spin_lock_irqsave(&i40iw_handler_lock, flags);
list_add(&hdl->list, &i40iw_handlers);
spin_unlock_irqrestore(&i40iw_handler_lock, flags);
}
/**
* i40iw_del_handler - delete a handler from the list
* @hdl: handler to be deleted from the handler list
*/
static int i40iw_del_handler(struct i40iw_handler *hdl)
{
unsigned long flags;
spin_lock_irqsave(&i40iw_handler_lock, flags);
list_del(&hdl->list);
spin_unlock_irqrestore(&i40iw_handler_lock, flags);
return 0;
}
/**
* i40iw_enable_intr - set up device interrupts
* @dev: hardware control device structure
* @msix_id: id of the interrupt to be enabled
*/
static void i40iw_enable_intr(struct i40iw_sc_dev *dev, u32 msix_id)
{
u32 val;
val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
(3 << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
if (dev->is_pf)
i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_id - 1), val);
else
i40iw_wr32(dev->hw, I40E_VFINT_DYN_CTLN1(msix_id - 1), val);
}
/**
* i40iw_dpc - tasklet for aeq and ceq 0
* @data: iwarp device
*/
static void i40iw_dpc(struct tasklet_struct *t)
{
struct i40iw_device *iwdev = from_tasklet(iwdev, t, dpc_tasklet);
if (iwdev->msix_shared)
i40iw_process_ceq(iwdev, iwdev->ceqlist);
i40iw_process_aeq(iwdev);
i40iw_enable_intr(&iwdev->sc_dev, iwdev->iw_msixtbl[0].idx);
}
/**
* i40iw_ceq_dpc - dpc handler for CEQ
* @data: data points to CEQ
*/
static void i40iw_ceq_dpc(struct tasklet_struct *t)
{
struct i40iw_ceq *iwceq = from_tasklet(iwceq, t, dpc_tasklet);
struct i40iw_device *iwdev = iwceq->iwdev;
i40iw_process_ceq(iwdev, iwceq);
i40iw_enable_intr(&iwdev->sc_dev, iwceq->msix_idx);
}
/**
* i40iw_irq_handler - interrupt handler for aeq and ceq0
* @irq: Interrupt request number
* @data: iwarp device
*/
static irqreturn_t i40iw_irq_handler(int irq, void *data)
{
struct i40iw_device *iwdev = (struct i40iw_device *)data;
tasklet_schedule(&iwdev->dpc_tasklet);
return IRQ_HANDLED;
}
/**
* i40iw_destroy_cqp - destroy control qp
* @iwdev: iwarp device
* @create_done: 1 if cqp create poll was success
*
* Issue destroy cqp request and
* free the resources associated with the cqp
*/
static void i40iw_destroy_cqp(struct i40iw_device *iwdev, bool free_hwcqp)
{
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
struct i40iw_cqp *cqp = &iwdev->cqp;
if (free_hwcqp)
dev->cqp_ops->cqp_destroy(dev->cqp);
i40iw_cleanup_pending_cqp_op(iwdev);
i40iw_free_dma_mem(dev->hw, &cqp->sq);
kfree(cqp->scratch_array);
iwdev->cqp.scratch_array = NULL;
kfree(cqp->cqp_requests);
cqp->cqp_requests = NULL;
}
/**
* i40iw_disable_irqs - disable device interrupts
* @dev: hardware control device structure
* @msic_vec: msix vector to disable irq
* @dev_id: parameter to pass to free_irq (used during irq setup)
*
* The function is called when destroying aeq/ceq
*/
static void i40iw_disable_irq(struct i40iw_sc_dev *dev,
struct i40iw_msix_vector *msix_vec,
void *dev_id)
{
if (dev->is_pf)
i40iw_wr32(dev->hw, I40E_PFINT_DYN_CTLN(msix_vec->idx - 1), 0);
else
i40iw_wr32(dev->hw, I40E_VFINT_DYN_CTLN1(msix_vec->idx - 1), 0);
irq_set_affinity_hint(msix_vec->irq, NULL);
free_irq(msix_vec->irq, dev_id);
}
/**
* i40iw_destroy_aeq - destroy aeq
* @iwdev: iwarp device
*
* Issue a destroy aeq request and
* free the resources associated with the aeq
* The function is called during driver unload
*/
static void i40iw_destroy_aeq(struct i40iw_device *iwdev)
{
enum i40iw_status_code status = I40IW_ERR_NOT_READY;
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
struct i40iw_aeq *aeq = &iwdev->aeq;
if (!iwdev->msix_shared)
i40iw_disable_irq(dev, iwdev->iw_msixtbl, (void *)iwdev);
if (iwdev->reset)
goto exit;
if (!dev->aeq_ops->aeq_destroy(&aeq->sc_aeq, 0, 1))
status = dev->aeq_ops->aeq_destroy_done(&aeq->sc_aeq);
if (status)
i40iw_pr_err("destroy aeq failed %d\n", status);
exit:
i40iw_free_dma_mem(dev->hw, &aeq->mem);
}
/**
* i40iw_destroy_ceq - destroy ceq
* @iwdev: iwarp device
* @iwceq: ceq to be destroyed
*
* Issue a destroy ceq request and
* free the resources associated with the ceq
*/
static void i40iw_destroy_ceq(struct i40iw_device *iwdev,
struct i40iw_ceq *iwceq)
{
enum i40iw_status_code status;
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
if (iwdev->reset)
goto exit;
status = dev->ceq_ops->ceq_destroy(&iwceq->sc_ceq, 0, 1);
if (status) {
i40iw_pr_err("ceq destroy command failed %d\n", status);
goto exit;
}
status = dev->ceq_ops->cceq_destroy_done(&iwceq->sc_ceq);
if (status)
i40iw_pr_err("ceq destroy completion failed %d\n", status);
exit:
i40iw_free_dma_mem(dev->hw, &iwceq->mem);
}
/**
* i40iw_dele_ceqs - destroy all ceq's
* @iwdev: iwarp device
*
* Go through all of the device ceq's and for each ceq
* disable the ceq interrupt and destroy the ceq
*/
static void i40iw_dele_ceqs(struct i40iw_device *iwdev)
{
u32 i = 0;
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
struct i40iw_ceq *iwceq = iwdev->ceqlist;
struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl;
if (iwdev->msix_shared) {
i40iw_disable_irq(dev, msix_vec, (void *)iwdev);
i40iw_destroy_ceq(iwdev, iwceq);
iwceq++;
i++;
}
for (msix_vec++; i < iwdev->ceqs_count; i++, msix_vec++, iwceq++) {
i40iw_disable_irq(dev, msix_vec, (void *)iwceq);
i40iw_destroy_ceq(iwdev, iwceq);
}
iwdev->sc_dev.ceq_valid = false;
}
/**
* i40iw_destroy_ccq - destroy control cq
* @iwdev: iwarp device
*
* Issue destroy ccq request and
* free the resources associated with the ccq
*/
static void i40iw_destroy_ccq(struct i40iw_device *iwdev)
{
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
struct i40iw_ccq *ccq = &iwdev->ccq;
enum i40iw_status_code status = 0;
if (!iwdev->reset)
status = dev->ccq_ops->ccq_destroy(dev->ccq, 0, true);
if (status)
i40iw_pr_err("ccq destroy failed %d\n", status);
i40iw_free_dma_mem(dev->hw, &ccq->mem_cq);
}
/* types of hmc objects */
static enum i40iw_hmc_rsrc_type iw_hmc_obj_types[] = {
I40IW_HMC_IW_QP,
I40IW_HMC_IW_CQ,
I40IW_HMC_IW_HTE,
I40IW_HMC_IW_ARP,
I40IW_HMC_IW_APBVT_ENTRY,
I40IW_HMC_IW_MR,
I40IW_HMC_IW_XF,
I40IW_HMC_IW_XFFL,
I40IW_HMC_IW_Q1,
I40IW_HMC_IW_Q1FL,
I40IW_HMC_IW_TIMER,
};
/**
* i40iw_close_hmc_objects_type - delete hmc objects of a given type
* @iwdev: iwarp device
* @obj_type: the hmc object type to be deleted
* @is_pf: true if the function is PF otherwise false
* @reset: true if called before reset
*/
static void i40iw_close_hmc_objects_type(struct i40iw_sc_dev *dev,
enum i40iw_hmc_rsrc_type obj_type,
struct i40iw_hmc_info *hmc_info,
bool is_pf,
bool reset)
{
struct i40iw_hmc_del_obj_info info;
memset(&info, 0, sizeof(info));
info.hmc_info = hmc_info;
info.rsrc_type = obj_type;
info.count = hmc_info->hmc_obj[obj_type].cnt;
info.is_pf = is_pf;
if (dev->hmc_ops->del_hmc_object(dev, &info, reset))
i40iw_pr_err("del obj of type %d failed\n", obj_type);
}
/**
* i40iw_del_hmc_objects - remove all device hmc objects
* @dev: iwarp device
* @hmc_info: hmc_info to free
* @is_pf: true if hmc_info belongs to PF, not vf nor allocated
* by PF on behalf of VF
* @reset: true if called before reset
*/
static void i40iw_del_hmc_objects(struct i40iw_sc_dev *dev,
struct i40iw_hmc_info *hmc_info,
bool is_pf,
bool reset)
{
unsigned int i;
for (i = 0; i < IW_HMC_OBJ_TYPE_NUM; i++)
i40iw_close_hmc_objects_type(dev, iw_hmc_obj_types[i], hmc_info, is_pf, reset);
}
/**
* i40iw_ceq_handler - interrupt handler for ceq
* @data: ceq pointer
*/
static irqreturn_t i40iw_ceq_handler(int irq, void *data)
{
struct i40iw_ceq *iwceq = (struct i40iw_ceq *)data;
if (iwceq->irq != irq)
i40iw_pr_err("expected irq = %d received irq = %d\n", iwceq->irq, irq);
tasklet_schedule(&iwceq->dpc_tasklet);
return IRQ_HANDLED;
}
/**
* i40iw_create_hmc_obj_type - create hmc object of a given type
* @dev: hardware control device structure
* @info: information for the hmc object to create
*/
static enum i40iw_status_code i40iw_create_hmc_obj_type(struct i40iw_sc_dev *dev,
struct i40iw_hmc_create_obj_info *info)
{
return dev->hmc_ops->create_hmc_object(dev, info);
}
/**
* i40iw_create_hmc_objs - create all hmc objects for the device
* @iwdev: iwarp device
* @is_pf: true if the function is PF otherwise false
*
* Create the device hmc objects and allocate hmc pages
* Return 0 if successful, otherwise clean up and return error
*/
static enum i40iw_status_code i40iw_create_hmc_objs(struct i40iw_device *iwdev,
bool is_pf)
{
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
struct i40iw_hmc_create_obj_info info;
enum i40iw_status_code status;
int i;
memset(&info, 0, sizeof(info));
info.hmc_info = dev->hmc_info;
info.is_pf = is_pf;
info.entry_type = iwdev->sd_type;
for (i = 0; i < IW_HMC_OBJ_TYPE_NUM; i++) {
info.rsrc_type = iw_hmc_obj_types[i];
info.count = dev->hmc_info->hmc_obj[info.rsrc_type].cnt;
info.add_sd_cnt = 0;
status = i40iw_create_hmc_obj_type(dev, &info);
if (status) {
i40iw_pr_err("create obj type %d status = %d\n",
iw_hmc_obj_types[i], status);
break;
}
}
if (!status)
return (dev->cqp_misc_ops->static_hmc_pages_allocated(dev->cqp, 0,
dev->hmc_fn_id,
true, true));
while (i) {
i--;
/* destroy the hmc objects of a given type */
i40iw_close_hmc_objects_type(dev,
iw_hmc_obj_types[i],
dev->hmc_info,
is_pf,
false);
}
return status;
}
/**
* i40iw_obj_aligned_mem - get aligned memory from device allocated memory
* @iwdev: iwarp device
* @memptr: points to the memory addresses
* @size: size of memory needed
* @mask: mask for the aligned memory
*
* Get aligned memory of the requested size and
* update the memptr to point to the new aligned memory
* Return 0 if successful, otherwise return no memory error
*/
enum i40iw_status_code i40iw_obj_aligned_mem(struct i40iw_device *iwdev,
struct i40iw_dma_mem *memptr,
u32 size,
u32 mask)
{
unsigned long va, newva;
unsigned long extra;
va = (unsigned long)iwdev->obj_next.va;
newva = va;
if (mask)
newva = ALIGN(va, (mask + 1));
extra = newva - va;
memptr->va = (u8 *)va + extra;
memptr->pa = iwdev->obj_next.pa + extra;
memptr->size = size;
if ((memptr->va + size) > (iwdev->obj_mem.va + iwdev->obj_mem.size))
return I40IW_ERR_NO_MEMORY;
iwdev->obj_next.va = memptr->va + size;
iwdev->obj_next.pa = memptr->pa + size;
return 0;
}
/**
* i40iw_create_cqp - create control qp
* @iwdev: iwarp device
*
* Return 0, if the cqp and all the resources associated with it
* are successfully created, otherwise return error
*/
static enum i40iw_status_code i40iw_create_cqp(struct i40iw_device *iwdev)
{
enum i40iw_status_code status;
u32 sqsize = I40IW_CQP_SW_SQSIZE_2048;
struct i40iw_dma_mem mem;
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
struct i40iw_cqp_init_info cqp_init_info;
struct i40iw_cqp *cqp = &iwdev->cqp;
u16 maj_err, min_err;
int i;
cqp->cqp_requests = kcalloc(sqsize, sizeof(*cqp->cqp_requests), GFP_KERNEL);
if (!cqp->cqp_requests)
return I40IW_ERR_NO_MEMORY;
cqp->scratch_array = kcalloc(sqsize, sizeof(*cqp->scratch_array), GFP_KERNEL);
if (!cqp->scratch_array) {
kfree(cqp->cqp_requests);
return I40IW_ERR_NO_MEMORY;
}
dev->cqp = &cqp->sc_cqp;
dev->cqp->dev = dev;
memset(&cqp_init_info, 0, sizeof(cqp_init_info));
status = i40iw_allocate_dma_mem(dev->hw, &cqp->sq,
(sizeof(struct i40iw_cqp_sq_wqe) * sqsize),
I40IW_CQP_ALIGNMENT);
if (status)
goto exit;
status = i40iw_obj_aligned_mem(iwdev, &mem, sizeof(struct i40iw_cqp_ctx),
I40IW_HOST_CTX_ALIGNMENT_MASK);
if (status)
goto exit;
dev->cqp->host_ctx_pa = mem.pa;
dev->cqp->host_ctx = mem.va;
/* populate the cqp init info */
cqp_init_info.dev = dev;
cqp_init_info.sq_size = sqsize;
cqp_init_info.sq = cqp->sq.va;
cqp_init_info.sq_pa = cqp->sq.pa;
cqp_init_info.host_ctx_pa = mem.pa;
cqp_init_info.host_ctx = mem.va;
cqp_init_info.hmc_profile = iwdev->resource_profile;
cqp_init_info.enabled_vf_count = iwdev->max_rdma_vfs;
cqp_init_info.scratch_array = cqp->scratch_array;
status = dev->cqp_ops->cqp_init(dev->cqp, &cqp_init_info);
if (status) {
i40iw_pr_err("cqp init status %d\n", status);
goto exit;
}
status = dev->cqp_ops->cqp_create(dev->cqp, &maj_err, &min_err);
if (status) {
i40iw_pr_err("cqp create status %d maj_err %d min_err %d\n",
status, maj_err, min_err);
goto exit;
}
spin_lock_init(&cqp->req_lock);
INIT_LIST_HEAD(&cqp->cqp_avail_reqs);
INIT_LIST_HEAD(&cqp->cqp_pending_reqs);
/* init the waitq of the cqp_requests and add them to the list */
for (i = 0; i < sqsize; i++) {
init_waitqueue_head(&cqp->cqp_requests[i].waitq);
list_add_tail(&cqp->cqp_requests[i].list, &cqp->cqp_avail_reqs);
}
return 0;
exit:
/* clean up the created resources */
i40iw_destroy_cqp(iwdev, false);
return status;
}
/**
* i40iw_create_ccq - create control cq
* @iwdev: iwarp device
*
* Return 0, if the ccq and the resources associated with it
* are successfully created, otherwise return error
*/
static enum i40iw_status_code i40iw_create_ccq(struct i40iw_device *iwdev)
{
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
struct i40iw_dma_mem mem;
enum i40iw_status_code status;
struct i40iw_ccq_init_info info;
struct i40iw_ccq *ccq = &iwdev->ccq;
memset(&info, 0, sizeof(info));
dev->ccq = &ccq->sc_cq;
dev->ccq->dev = dev;
info.dev = dev;
ccq->shadow_area.size = sizeof(struct i40iw_cq_shadow_area);
ccq->mem_cq.size = sizeof(struct i40iw_cqe) * IW_CCQ_SIZE;
status = i40iw_allocate_dma_mem(dev->hw, &ccq->mem_cq,
ccq->mem_cq.size, I40IW_CQ0_ALIGNMENT);
if (status)
goto exit;
status = i40iw_obj_aligned_mem(iwdev, &mem, ccq->shadow_area.size,
I40IW_SHADOWAREA_MASK);
if (status)
goto exit;
ccq->sc_cq.back_cq = (void *)ccq;
/* populate the ccq init info */
info.cq_base = ccq->mem_cq.va;
info.cq_pa = ccq->mem_cq.pa;
info.num_elem = IW_CCQ_SIZE;
info.shadow_area = mem.va;
info.shadow_area_pa = mem.pa;
info.ceqe_mask = false;
info.ceq_id_valid = true;
info.shadow_read_threshold = 16;
status = dev->ccq_ops->ccq_init(dev->ccq, &info);
if (!status)
status = dev->ccq_ops->ccq_create(dev->ccq, 0, true, true);
exit:
if (status)
i40iw_free_dma_mem(dev->hw, &ccq->mem_cq);
return status;
}
/**
* i40iw_configure_ceq_vector - set up the msix interrupt vector for ceq
* @iwdev: iwarp device
* @msix_vec: interrupt vector information
* @iwceq: ceq associated with the vector
* @ceq_id: the id number of the iwceq
*
* Allocate interrupt resources and enable irq handling
* Return 0 if successful, otherwise return error
*/
static enum i40iw_status_code i40iw_configure_ceq_vector(struct i40iw_device *iwdev,
struct i40iw_ceq *iwceq,
u32 ceq_id,
struct i40iw_msix_vector *msix_vec)
{
enum i40iw_status_code status;
if (iwdev->msix_shared && !ceq_id) {
tasklet_setup(&iwdev->dpc_tasklet, i40iw_dpc);
status = request_irq(msix_vec->irq, i40iw_irq_handler, 0, "AEQCEQ", iwdev);
} else {
tasklet_setup(&iwceq->dpc_tasklet, i40iw_ceq_dpc);
status = request_irq(msix_vec->irq, i40iw_ceq_handler, 0, "CEQ", iwceq);
}
cpumask_clear(&msix_vec->mask);
cpumask_set_cpu(msix_vec->cpu_affinity, &msix_vec->mask);
irq_set_affinity_hint(msix_vec->irq, &msix_vec->mask);
if (status) {
i40iw_pr_err("ceq irq config fail\n");
return I40IW_ERR_CONFIG;
}
msix_vec->ceq_id = ceq_id;
return 0;
}
/**
* i40iw_create_ceq - create completion event queue
* @iwdev: iwarp device
* @iwceq: pointer to the ceq resources to be created
* @ceq_id: the id number of the iwceq
*
* Return 0, if the ceq and the resources associated with it
* are successfully created, otherwise return error
*/
static enum i40iw_status_code i40iw_create_ceq(struct i40iw_device *iwdev,
struct i40iw_ceq *iwceq,
u32 ceq_id)
{
enum i40iw_status_code status;
struct i40iw_ceq_init_info info;
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
u64 scratch;
memset(&info, 0, sizeof(info));
info.ceq_id = ceq_id;
iwceq->iwdev = iwdev;
iwceq->mem.size = sizeof(struct i40iw_ceqe) *
iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
status = i40iw_allocate_dma_mem(dev->hw, &iwceq->mem, iwceq->mem.size,
I40IW_CEQ_ALIGNMENT);
if (status)
goto exit;
info.ceq_id = ceq_id;
info.ceqe_base = iwceq->mem.va;
info.ceqe_pa = iwceq->mem.pa;
info.elem_cnt = iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
iwceq->sc_ceq.ceq_id = ceq_id;
info.dev = dev;
scratch = (uintptr_t)&iwdev->cqp.sc_cqp;
status = dev->ceq_ops->ceq_init(&iwceq->sc_ceq, &info);
if (!status)
status = dev->ceq_ops->cceq_create(&iwceq->sc_ceq, scratch);
exit:
if (status)
i40iw_free_dma_mem(dev->hw, &iwceq->mem);
return status;
}
void i40iw_request_reset(struct i40iw_device *iwdev)
{
struct i40e_info *ldev = iwdev->ldev;
ldev->ops->request_reset(ldev, iwdev->client, 1);
}
/**
* i40iw_setup_ceqs - manage the device ceq's and their interrupt resources
* @iwdev: iwarp device
* @ldev: i40e lan device
*
* Allocate a list for all device completion event queues
* Create the ceq's and configure their msix interrupt vectors
* Return 0, if at least one ceq is successfully set up, otherwise return error
*/
static enum i40iw_status_code i40iw_setup_ceqs(struct i40iw_device *iwdev,
struct i40e_info *ldev)
{
u32 i;
u32 ceq_id;
struct i40iw_ceq *iwceq;
struct i40iw_msix_vector *msix_vec;
enum i40iw_status_code status = 0;
u32 num_ceqs;
if (ldev && ldev->ops && ldev->ops->setup_qvlist) {
status = ldev->ops->setup_qvlist(ldev, &i40iw_client,
iwdev->iw_qvlist);
if (status)
goto exit;
} else {
status = I40IW_ERR_BAD_PTR;
goto exit;
}
num_ceqs = min(iwdev->msix_count, iwdev->sc_dev.hmc_fpm_misc.max_ceqs);
iwdev->ceqlist = kcalloc(num_ceqs, sizeof(*iwdev->ceqlist), GFP_KERNEL);
if (!iwdev->ceqlist) {
status = I40IW_ERR_NO_MEMORY;
goto exit;
}
i = (iwdev->msix_shared) ? 0 : 1;
for (ceq_id = 0; i < num_ceqs; i++, ceq_id++) {
iwceq = &iwdev->ceqlist[ceq_id];
status = i40iw_create_ceq(iwdev, iwceq, ceq_id);
if (status) {
i40iw_pr_err("create ceq status = %d\n", status);
break;
}
msix_vec = &iwdev->iw_msixtbl[i];
iwceq->irq = msix_vec->irq;
iwceq->msix_idx = msix_vec->idx;
status = i40iw_configure_ceq_vector(iwdev, iwceq, ceq_id, msix_vec);
if (status) {
i40iw_destroy_ceq(iwdev, iwceq);
break;
}
i40iw_enable_intr(&iwdev->sc_dev, msix_vec->idx);
iwdev->ceqs_count++;
}
exit:
if (status && !iwdev->ceqs_count) {
kfree(iwdev->ceqlist);
iwdev->ceqlist = NULL;
return status;
} else {
iwdev->sc_dev.ceq_valid = true;
return 0;
}
}
/**
* i40iw_configure_aeq_vector - set up the msix vector for aeq
* @iwdev: iwarp device
*
* Allocate interrupt resources and enable irq handling
* Return 0 if successful, otherwise return error
*/
static enum i40iw_status_code i40iw_configure_aeq_vector(struct i40iw_device *iwdev)
{
struct i40iw_msix_vector *msix_vec = iwdev->iw_msixtbl;
u32 ret = 0;
if (!iwdev->msix_shared) {
tasklet_setup(&iwdev->dpc_tasklet, i40iw_dpc);
ret = request_irq(msix_vec->irq, i40iw_irq_handler, 0, "i40iw", iwdev);
}
if (ret) {
i40iw_pr_err("aeq irq config fail\n");
return I40IW_ERR_CONFIG;
}
return 0;
}
/**
* i40iw_create_aeq - create async event queue
* @iwdev: iwarp device
*
* Return 0, if the aeq and the resources associated with it
* are successfully created, otherwise return error
*/
static enum i40iw_status_code i40iw_create_aeq(struct i40iw_device *iwdev)
{
enum i40iw_status_code status;
struct i40iw_aeq_init_info info;
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
struct i40iw_aeq *aeq = &iwdev->aeq;
u64 scratch = 0;
u32 aeq_size;
aeq_size = 2 * iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_QP].cnt +
iwdev->sc_dev.hmc_info->hmc_obj[I40IW_HMC_IW_CQ].cnt;
memset(&info, 0, sizeof(info));
aeq->mem.size = sizeof(struct i40iw_sc_aeqe) * aeq_size;
status = i40iw_allocate_dma_mem(dev->hw, &aeq->mem, aeq->mem.size,
I40IW_AEQ_ALIGNMENT);
if (status)
goto exit;
info.aeqe_base = aeq->mem.va;
info.aeq_elem_pa = aeq->mem.pa;
info.elem_cnt = aeq_size;
info.dev = dev;
status = dev->aeq_ops->aeq_init(&aeq->sc_aeq, &info);
if (status)
goto exit;
status = dev->aeq_ops->aeq_create(&aeq->sc_aeq, scratch, 1);
if (!status)
status = dev->aeq_ops->aeq_create_done(&aeq->sc_aeq);
exit:
if (status)
i40iw_free_dma_mem(dev->hw, &aeq->mem);
return status;
}
/**
* i40iw_setup_aeq - set up the device aeq
* @iwdev: iwarp device
*
* Create the aeq and configure its msix interrupt vector
* Return 0 if successful, otherwise return error
*/
static enum i40iw_status_code i40iw_setup_aeq(struct i40iw_device *iwdev)
{
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
enum i40iw_status_code status;
status = i40iw_create_aeq(iwdev);
if (status)
return status;
status = i40iw_configure_aeq_vector(iwdev);
if (status) {
i40iw_destroy_aeq(iwdev);
return status;
}
if (!iwdev->msix_shared)
i40iw_enable_intr(dev, iwdev->iw_msixtbl[0].idx);
return 0;
}
/**
* i40iw_initialize_ilq - create iwarp local queue for cm
* @iwdev: iwarp device
*
* Return 0 if successful, otherwise return error
*/
static enum i40iw_status_code i40iw_initialize_ilq(struct i40iw_device *iwdev)
{
struct i40iw_puda_rsrc_info info;
enum i40iw_status_code status;
memset(&info, 0, sizeof(info));
info.type = I40IW_PUDA_RSRC_TYPE_ILQ;
info.cq_id = 1;
info.qp_id = 0;
info.count = 1;
info.pd_id = 1;
info.sq_size = 8192;
info.rq_size = 8192;
info.buf_size = 1024;
info.tx_buf_cnt = 16384;
info.receive = i40iw_receive_ilq;
info.xmit_complete = i40iw_free_sqbuf;
status = i40iw_puda_create_rsrc(&iwdev->vsi, &info);
if (status)
i40iw_pr_err("ilq create fail\n");
return status;
}
/**
* i40iw_initialize_ieq - create iwarp exception queue
* @iwdev: iwarp device
*
* Return 0 if successful, otherwise return error
*/
static enum i40iw_status_code i40iw_initialize_ieq(struct i40iw_device *iwdev)
{
struct i40iw_puda_rsrc_info info;
enum i40iw_status_code status;
memset(&info, 0, sizeof(info));
info.type = I40IW_PUDA_RSRC_TYPE_IEQ;
info.cq_id = 2;
info.qp_id = iwdev->vsi.exception_lan_queue;
info.count = 1;
info.pd_id = 2;
info.sq_size = 8192;
info.rq_size = 8192;
info.buf_size = iwdev->vsi.mtu + VLAN_ETH_HLEN;
info.tx_buf_cnt = 4096;
status = i40iw_puda_create_rsrc(&iwdev->vsi, &info);
if (status)
i40iw_pr_err("ieq create fail\n");
return status;
}
/**
* i40iw_reinitialize_ieq - destroy and re-create ieq
* @dev: iwarp device
*/
void i40iw_reinitialize_ieq(struct i40iw_sc_dev *dev)
{
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_IEQ, false);
if (i40iw_initialize_ieq(iwdev)) {
iwdev->reset = true;
i40iw_request_reset(iwdev);
}
}
/**
* i40iw_hmc_setup - create hmc objects for the device
* @iwdev: iwarp device
*
* Set up the device private memory space for the number and size of
* the hmc objects and create the objects
* Return 0 if successful, otherwise return error
*/
static enum i40iw_status_code i40iw_hmc_setup(struct i40iw_device *iwdev)
{
enum i40iw_status_code status;
iwdev->sd_type = I40IW_SD_TYPE_DIRECT;
status = i40iw_config_fpm_values(&iwdev->sc_dev, IW_CFG_FPM_QP_COUNT);
if (status)
goto exit;
status = i40iw_create_hmc_objs(iwdev, true);
if (status)
goto exit;
iwdev->init_state = HMC_OBJS_CREATED;
exit:
return status;
}
/**
* i40iw_del_init_mem - deallocate memory resources
* @iwdev: iwarp device
*/
static void i40iw_del_init_mem(struct i40iw_device *iwdev)
{
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
i40iw_free_dma_mem(&iwdev->hw, &iwdev->obj_mem);
kfree(dev->hmc_info->sd_table.sd_entry);
dev->hmc_info->sd_table.sd_entry = NULL;
kfree(iwdev->mem_resources);
iwdev->mem_resources = NULL;
kfree(iwdev->ceqlist);
iwdev->ceqlist = NULL;
kfree(iwdev->iw_msixtbl);
iwdev->iw_msixtbl = NULL;
kfree(iwdev->hmc_info_mem);
iwdev->hmc_info_mem = NULL;
}
/**
* i40iw_del_macip_entry - remove a mac ip address entry from the hw table
* @iwdev: iwarp device
* @idx: the index of the mac ip address to delete
*/
static void i40iw_del_macip_entry(struct i40iw_device *iwdev, u8 idx)
{
struct i40iw_cqp *iwcqp = &iwdev->cqp;
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
enum i40iw_status_code status = 0;
cqp_request = i40iw_get_cqp_request(iwcqp, true);
if (!cqp_request) {
i40iw_pr_err("cqp_request memory failed\n");
return;
}
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = OP_DELETE_LOCAL_MAC_IPADDR_ENTRY;
cqp_info->post_sq = 1;
cqp_info->in.u.del_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
cqp_info->in.u.del_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
cqp_info->in.u.del_local_mac_ipaddr_entry.entry_idx = idx;
cqp_info->in.u.del_local_mac_ipaddr_entry.ignore_ref_count = 0;
status = i40iw_handle_cqp_op(iwdev, cqp_request);
if (status)
i40iw_pr_err("CQP-OP Del MAC Ip entry fail");
}
/**
* i40iw_add_mac_ipaddr_entry - add a mac ip address entry to the hw table
* @iwdev: iwarp device
* @mac_addr: pointer to mac address
* @idx: the index of the mac ip address to add
*/
static enum i40iw_status_code i40iw_add_mac_ipaddr_entry(struct i40iw_device *iwdev,
u8 *mac_addr,
u8 idx)
{
struct i40iw_local_mac_ipaddr_entry_info *info;
struct i40iw_cqp *iwcqp = &iwdev->cqp;
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
enum i40iw_status_code status = 0;
cqp_request = i40iw_get_cqp_request(iwcqp, true);
if (!cqp_request) {
i40iw_pr_err("cqp_request memory failed\n");
return I40IW_ERR_NO_MEMORY;
}
cqp_info = &cqp_request->info;
cqp_info->post_sq = 1;
info = &cqp_info->in.u.add_local_mac_ipaddr_entry.info;
ether_addr_copy(info->mac_addr, mac_addr);
info->entry_idx = idx;
cqp_info->in.u.add_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
cqp_info->cqp_cmd = OP_ADD_LOCAL_MAC_IPADDR_ENTRY;
cqp_info->in.u.add_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
cqp_info->in.u.add_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
status = i40iw_handle_cqp_op(iwdev, cqp_request);
if (status)
i40iw_pr_err("CQP-OP Add MAC Ip entry fail");
return status;
}
/**
* i40iw_alloc_local_mac_ipaddr_entry - allocate a mac ip address entry
* @iwdev: iwarp device
* @mac_ip_tbl_idx: the index of the new mac ip address
*
* Allocate a mac ip address entry and update the mac_ip_tbl_idx
* to hold the index of the newly created mac ip address
* Return 0 if successful, otherwise return error
*/
static enum i40iw_status_code i40iw_alloc_local_mac_ipaddr_entry(struct i40iw_device *iwdev,
u16 *mac_ip_tbl_idx)
{
struct i40iw_cqp *iwcqp = &iwdev->cqp;
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
enum i40iw_status_code status = 0;
cqp_request = i40iw_get_cqp_request(iwcqp, true);
if (!cqp_request) {
i40iw_pr_err("cqp_request memory failed\n");
return I40IW_ERR_NO_MEMORY;
}
/* increment refcount, because we need the cqp request ret value */
atomic_inc(&cqp_request->refcount);
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = OP_ALLOC_LOCAL_MAC_IPADDR_ENTRY;
cqp_info->post_sq = 1;
cqp_info->in.u.alloc_local_mac_ipaddr_entry.cqp = &iwcqp->sc_cqp;
cqp_info->in.u.alloc_local_mac_ipaddr_entry.scratch = (uintptr_t)cqp_request;
status = i40iw_handle_cqp_op(iwdev, cqp_request);
if (!status)
*mac_ip_tbl_idx = cqp_request->compl_info.op_ret_val;
else
i40iw_pr_err("CQP-OP Alloc MAC Ip entry fail");
/* decrement refcount and free the cqp request, if no longer used */
i40iw_put_cqp_request(iwcqp, cqp_request);
return status;
}
/**
* i40iw_alloc_set_mac_ipaddr - set up a mac ip address table entry
* @iwdev: iwarp device
* @macaddr: pointer to mac address
*
* Allocate a mac ip address entry and add it to the hw table
* Return 0 if successful, otherwise return error
*/
static enum i40iw_status_code i40iw_alloc_set_mac_ipaddr(struct i40iw_device *iwdev,
u8 *macaddr)
{
enum i40iw_status_code status;
status = i40iw_alloc_local_mac_ipaddr_entry(iwdev, &iwdev->mac_ip_table_idx);
if (!status) {
status = i40iw_add_mac_ipaddr_entry(iwdev, macaddr,
(u8)iwdev->mac_ip_table_idx);
if (status)
i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx);
}
return status;
}
/**
* i40iw_add_ipv6_addr - add ipv6 address to the hw arp table
* @iwdev: iwarp device
*/
static void i40iw_add_ipv6_addr(struct i40iw_device *iwdev)
{
struct net_device *ip_dev;
struct inet6_dev *idev;
struct inet6_ifaddr *ifp, *tmp;
u32 local_ipaddr6[4];
rcu_read_lock();
for_each_netdev_rcu(&init_net, ip_dev) {
if ((((rdma_vlan_dev_vlan_id(ip_dev) < 0xFFFF) &&
(rdma_vlan_dev_real_dev(ip_dev) == iwdev->netdev)) ||
(ip_dev == iwdev->netdev)) && (ip_dev->flags & IFF_UP)) {
idev = __in6_dev_get(ip_dev);
if (!idev) {
i40iw_pr_err("ipv6 inet device not found\n");
break;
}
list_for_each_entry_safe(ifp, tmp, &idev->addr_list, if_list) {
i40iw_pr_info("IP=%pI6, vlan_id=%d, MAC=%pM\n", &ifp->addr,
rdma_vlan_dev_vlan_id(ip_dev), ip_dev->dev_addr);
i40iw_copy_ip_ntohl(local_ipaddr6,
ifp->addr.in6_u.u6_addr32);
i40iw_manage_arp_cache(iwdev,
ip_dev->dev_addr,
local_ipaddr6,
false,
I40IW_ARP_ADD);
}
}
}
rcu_read_unlock();
}
/**
* i40iw_add_ipv4_addr - add ipv4 address to the hw arp table
* @iwdev: iwarp device
*/
static void i40iw_add_ipv4_addr(struct i40iw_device *iwdev)
{
struct net_device *dev;
struct in_device *idev;
u32 ip_addr;
rcu_read_lock();
for_each_netdev_rcu(&init_net, dev) {
if ((((rdma_vlan_dev_vlan_id(dev) < 0xFFFF) &&
(rdma_vlan_dev_real_dev(dev) == iwdev->netdev)) ||
(dev == iwdev->netdev)) && (READ_ONCE(dev->flags) & IFF_UP)) {
const struct in_ifaddr *ifa;
idev = __in_dev_get_rcu(dev);
if (!idev)
continue;
in_dev_for_each_ifa_rcu(ifa, idev) {
i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_CM,
"IP=%pI4, vlan_id=%d, MAC=%pM\n", &ifa->ifa_address,
rdma_vlan_dev_vlan_id(dev), dev->dev_addr);
ip_addr = ntohl(ifa->ifa_address);
i40iw_manage_arp_cache(iwdev,
dev->dev_addr,
&ip_addr,
true,
I40IW_ARP_ADD);
}
}
}
rcu_read_unlock();
}
/**
* i40iw_add_mac_ip - add mac and ip addresses
* @iwdev: iwarp device
*
* Create and add a mac ip address entry to the hw table and
* ipv4/ipv6 addresses to the arp cache
* Return 0 if successful, otherwise return error
*/
static enum i40iw_status_code i40iw_add_mac_ip(struct i40iw_device *iwdev)
{
struct net_device *netdev = iwdev->netdev;
enum i40iw_status_code status;
status = i40iw_alloc_set_mac_ipaddr(iwdev, (u8 *)netdev->dev_addr);
if (status)
return status;
i40iw_add_ipv4_addr(iwdev);
i40iw_add_ipv6_addr(iwdev);
return 0;
}
/**
* i40iw_wait_pe_ready - Check if firmware is ready
* @hw: provides access to registers
*/
static void i40iw_wait_pe_ready(struct i40iw_hw *hw)
{
u32 statusfw;
u32 statuscpu0;
u32 statuscpu1;
u32 statuscpu2;
u32 retrycount = 0;
do {
statusfw = i40iw_rd32(hw, I40E_GLPE_FWLDSTATUS);
i40iw_pr_info("[%04d] fm load status[x%04X]\n", __LINE__, statusfw);
statuscpu0 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS0);
i40iw_pr_info("[%04d] CSR_CQP status[x%04X]\n", __LINE__, statuscpu0);
statuscpu1 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS1);
i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS1 status[x%04X]\n",
__LINE__, statuscpu1);
statuscpu2 = i40iw_rd32(hw, I40E_GLPE_CPUSTATUS2);
i40iw_pr_info("[%04d] I40E_GLPE_CPUSTATUS2 status[x%04X]\n",
__LINE__, statuscpu2);
if ((statuscpu0 == 0x80) && (statuscpu1 == 0x80) && (statuscpu2 == 0x80))
break; /* SUCCESS */
msleep(1000);
retrycount++;
} while (retrycount < 14);
i40iw_wr32(hw, 0xb4040, 0x4C104C5);
}
/**
* i40iw_initialize_dev - initialize device
* @iwdev: iwarp device
* @ldev: lan device information
*
* Allocate memory for the hmc objects and initialize iwdev
* Return 0 if successful, otherwise clean up the resources
* and return error
*/
static enum i40iw_status_code i40iw_initialize_dev(struct i40iw_device *iwdev,
struct i40e_info *ldev)
{
enum i40iw_status_code status;
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
struct i40iw_device_init_info info;
struct i40iw_vsi_init_info vsi_info;
struct i40iw_dma_mem mem;
struct i40iw_l2params l2params;
u32 size;
struct i40iw_vsi_stats_info stats_info;
u16 last_qset = I40IW_NO_QSET;
u16 qset;
u32 i;
memset(&l2params, 0, sizeof(l2params));
memset(&info, 0, sizeof(info));
size = sizeof(struct i40iw_hmc_pble_rsrc) + sizeof(struct i40iw_hmc_info) +
(sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX);
iwdev->hmc_info_mem = kzalloc(size, GFP_KERNEL);
if (!iwdev->hmc_info_mem)
return I40IW_ERR_NO_MEMORY;
iwdev->pble_rsrc = (struct i40iw_hmc_pble_rsrc *)iwdev->hmc_info_mem;
dev->hmc_info = &iwdev->hw.hmc;
dev->hmc_info->hmc_obj = (struct i40iw_hmc_obj_info *)(iwdev->pble_rsrc + 1);
status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_QUERY_FPM_BUF_SIZE,
I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
if (status)
goto error;
info.fpm_query_buf_pa = mem.pa;
info.fpm_query_buf = mem.va;
status = i40iw_obj_aligned_mem(iwdev, &mem, I40IW_COMMIT_FPM_BUF_SIZE,
I40IW_FPM_COMMIT_BUF_ALIGNMENT_MASK);
if (status)
goto error;
info.fpm_commit_buf_pa = mem.pa;
info.fpm_commit_buf = mem.va;
info.hmc_fn_id = ldev->fid;
info.is_pf = (ldev->ftype) ? false : true;
info.bar0 = ldev->hw_addr;
info.hw = &iwdev->hw;
info.debug_mask = debug;
l2params.mtu =
(ldev->params.mtu) ? ldev->params.mtu : I40IW_DEFAULT_MTU;
for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++) {
qset = ldev->params.qos.prio_qos[i].qs_handle;
l2params.qs_handle_list[i] = qset;
if (last_qset == I40IW_NO_QSET)
last_qset = qset;
else if ((qset != last_qset) && (qset != I40IW_NO_QSET))
iwdev->dcb = true;
}
i40iw_pr_info("DCB is set/clear = %d\n", iwdev->dcb);
info.vchnl_send = i40iw_virtchnl_send;
status = i40iw_device_init(&iwdev->sc_dev, &info);
if (status)
goto error;
memset(&vsi_info, 0, sizeof(vsi_info));
vsi_info.dev = &iwdev->sc_dev;
vsi_info.back_vsi = (void *)iwdev;
vsi_info.params = &l2params;
vsi_info.exception_lan_queue = 1;
i40iw_sc_vsi_init(&iwdev->vsi, &vsi_info);
if (dev->is_pf) {
memset(&stats_info, 0, sizeof(stats_info));
stats_info.fcn_id = ldev->fid;
stats_info.pestat = kzalloc(sizeof(*stats_info.pestat), GFP_KERNEL);
if (!stats_info.pestat) {
status = I40IW_ERR_NO_MEMORY;
goto error;
}
stats_info.stats_initialize = true;
if (stats_info.pestat)
i40iw_vsi_stats_init(&iwdev->vsi, &stats_info);
}
return status;
error:
kfree(iwdev->hmc_info_mem);
iwdev->hmc_info_mem = NULL;
return status;
}
/**
* i40iw_register_notifiers - register tcp ip notifiers
*/
static void i40iw_register_notifiers(void)
{
register_inetaddr_notifier(&i40iw_inetaddr_notifier);
register_inet6addr_notifier(&i40iw_inetaddr6_notifier);
register_netevent_notifier(&i40iw_net_notifier);
register_netdevice_notifier(&i40iw_netdevice_notifier);
}
/**
* i40iw_unregister_notifiers - unregister tcp ip notifiers
*/
static void i40iw_unregister_notifiers(void)
{
unregister_netevent_notifier(&i40iw_net_notifier);
unregister_inetaddr_notifier(&i40iw_inetaddr_notifier);
unregister_inet6addr_notifier(&i40iw_inetaddr6_notifier);
unregister_netdevice_notifier(&i40iw_netdevice_notifier);
}
/**
* i40iw_save_msix_info - copy msix vector information to iwarp device
* @iwdev: iwarp device
* @ldev: lan device information
*
* Allocate iwdev msix table and copy the ldev msix info to the table
* Return 0 if successful, otherwise return error
*/
static enum i40iw_status_code i40iw_save_msix_info(struct i40iw_device *iwdev,
struct i40e_info *ldev)
{
struct i40e_qvlist_info *iw_qvlist;
struct i40e_qv_info *iw_qvinfo;
u32 ceq_idx;
u32 i;
u32 size;
if (!ldev->msix_count) {
i40iw_pr_err("No MSI-X vectors\n");
return I40IW_ERR_CONFIG;
}
iwdev->msix_count = ldev->msix_count;
size = sizeof(struct i40iw_msix_vector) * iwdev->msix_count;
size += sizeof(struct i40e_qvlist_info);
size += sizeof(struct i40e_qv_info) * iwdev->msix_count - 1;
iwdev->iw_msixtbl = kzalloc(size, GFP_KERNEL);
if (!iwdev->iw_msixtbl)
return I40IW_ERR_NO_MEMORY;
iwdev->iw_qvlist = (struct i40e_qvlist_info *)(&iwdev->iw_msixtbl[iwdev->msix_count]);
iw_qvlist = iwdev->iw_qvlist;
iw_qvinfo = iw_qvlist->qv_info;
iw_qvlist->num_vectors = iwdev->msix_count;
if (iwdev->msix_count <= num_online_cpus())
iwdev->msix_shared = true;
for (i = 0, ceq_idx = 0; i < iwdev->msix_count; i++, iw_qvinfo++) {
iwdev->iw_msixtbl[i].idx = ldev->msix_entries[i].entry;
iwdev->iw_msixtbl[i].irq = ldev->msix_entries[i].vector;
iwdev->iw_msixtbl[i].cpu_affinity = ceq_idx;
if (i == 0) {
iw_qvinfo->aeq_idx = 0;
if (iwdev->msix_shared)
iw_qvinfo->ceq_idx = ceq_idx++;
else
iw_qvinfo->ceq_idx = I40E_QUEUE_INVALID_IDX;
} else {
iw_qvinfo->aeq_idx = I40E_QUEUE_INVALID_IDX;
iw_qvinfo->ceq_idx = ceq_idx++;
}
iw_qvinfo->itr_idx = 3;
iw_qvinfo->v_idx = iwdev->iw_msixtbl[i].idx;
}
return 0;
}
/**
* i40iw_deinit_device - clean up the device resources
* @iwdev: iwarp device
*
* Destroy the ib device interface, remove the mac ip entry and ipv4/ipv6 addresses,
* destroy the device queues and free the pble and the hmc objects
*/
static void i40iw_deinit_device(struct i40iw_device *iwdev)
{
struct i40e_info *ldev = iwdev->ldev;
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
i40iw_pr_info("state = %d\n", iwdev->init_state);
if (iwdev->param_wq)
destroy_workqueue(iwdev->param_wq);
switch (iwdev->init_state) {
case RDMA_DEV_REGISTERED:
iwdev->iw_status = 0;
i40iw_port_ibevent(iwdev);
i40iw_destroy_rdma_device(iwdev->iwibdev);
fallthrough;
case IP_ADDR_REGISTERED:
if (!iwdev->reset)
i40iw_del_macip_entry(iwdev, (u8)iwdev->mac_ip_table_idx);
fallthrough;
case PBLE_CHUNK_MEM:
i40iw_destroy_pble_pool(dev, iwdev->pble_rsrc);
fallthrough;
case CEQ_CREATED:
i40iw_dele_ceqs(iwdev);
fallthrough;
case AEQ_CREATED:
i40iw_destroy_aeq(iwdev);
fallthrough;
case IEQ_CREATED:
i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_IEQ, iwdev->reset);
fallthrough;
case ILQ_CREATED:
i40iw_puda_dele_resources(&iwdev->vsi, I40IW_PUDA_RSRC_TYPE_ILQ, iwdev->reset);
fallthrough;
case CCQ_CREATED:
i40iw_destroy_ccq(iwdev);
fallthrough;
case HMC_OBJS_CREATED:
i40iw_del_hmc_objects(dev, dev->hmc_info, true, iwdev->reset);
fallthrough;
case CQP_CREATED:
i40iw_destroy_cqp(iwdev, true);
fallthrough;
case INITIAL_STATE:
i40iw_cleanup_cm_core(&iwdev->cm_core);
if (iwdev->vsi.pestat) {
i40iw_vsi_stats_free(&iwdev->vsi);
kfree(iwdev->vsi.pestat);
}
i40iw_del_init_mem(iwdev);
break;
case INVALID_STATE:
default:
i40iw_pr_err("bad init_state = %d\n", iwdev->init_state);
break;
}
i40iw_del_handler(i40iw_find_i40e_handler(ldev));
kfree(iwdev->hdl);
}
/**
* i40iw_setup_init_state - set up the initial device struct
* @hdl: handler for iwarp device - one per instance
* @ldev: lan device information
* @client: iwarp client information, provided during registration
*
* Initialize the iwarp device and its hdl information
* using the ldev and client information
* Return 0 if successful, otherwise return error
*/
static enum i40iw_status_code i40iw_setup_init_state(struct i40iw_handler *hdl,
struct i40e_info *ldev,
struct i40e_client *client)
{
struct i40iw_device *iwdev = &hdl->device;
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
enum i40iw_status_code status;
memcpy(&hdl->ldev, ldev, sizeof(*ldev));
iwdev->mpa_version = mpa_version;
iwdev->resource_profile = (resource_profile < I40IW_HMC_PROFILE_EQUAL) ?
(u8)resource_profile + I40IW_HMC_PROFILE_DEFAULT :
I40IW_HMC_PROFILE_DEFAULT;
iwdev->max_rdma_vfs =
(iwdev->resource_profile != I40IW_HMC_PROFILE_DEFAULT) ? max_rdma_vfs : 0;
iwdev->max_enabled_vfs = iwdev->max_rdma_vfs;
iwdev->netdev = ldev->netdev;
hdl->client = client;
if (!ldev->ftype)
iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_DB_ADDR_OFFSET;
else
iwdev->db_start = pci_resource_start(ldev->pcidev, 0) + I40IW_VF_DB_ADDR_OFFSET;
status = i40iw_save_msix_info(iwdev, ldev);
if (status)
return status;
iwdev->hw.pcidev = ldev->pcidev;
iwdev->hw.hw_addr = ldev->hw_addr;
status = i40iw_allocate_dma_mem(&iwdev->hw,
&iwdev->obj_mem, 8192, 4096);
if (status)
goto exit;
iwdev->obj_next = iwdev->obj_mem;
init_waitqueue_head(&iwdev->vchnl_waitq);
init_waitqueue_head(&dev->vf_reqs);
init_waitqueue_head(&iwdev->close_wq);
status = i40iw_initialize_dev(iwdev, ldev);
exit:
if (status) {
kfree(iwdev->iw_msixtbl);
i40iw_free_dma_mem(dev->hw, &iwdev->obj_mem);
iwdev->iw_msixtbl = NULL;
}
return status;
}
/**
* i40iw_get_used_rsrc - determine resources used internally
* @iwdev: iwarp device
*
* Called after internal allocations
*/
static void i40iw_get_used_rsrc(struct i40iw_device *iwdev)
{
iwdev->used_pds = find_next_zero_bit(iwdev->allocated_pds, iwdev->max_pd, 0);
iwdev->used_qps = find_next_zero_bit(iwdev->allocated_qps, iwdev->max_qp, 0);
iwdev->used_cqs = find_next_zero_bit(iwdev->allocated_cqs, iwdev->max_cq, 0);
iwdev->used_mrs = find_next_zero_bit(iwdev->allocated_mrs, iwdev->max_mr, 0);
}
/**
* i40iw_open - client interface operation open for iwarp/uda device
* @ldev: lan device information
* @client: iwarp client information, provided during registration
*
* Called by the lan driver during the processing of client register
* Create device resources, set up queues, pble and hmc objects and
* register the device with the ib verbs interface
* Return 0 if successful, otherwise return error
*/
static int i40iw_open(struct i40e_info *ldev, struct i40e_client *client)
{
struct i40iw_device *iwdev;
struct i40iw_sc_dev *dev;
enum i40iw_status_code status;
struct i40iw_handler *hdl;
hdl = i40iw_find_netdev(ldev->netdev);
if (hdl)
return 0;
hdl = kzalloc(sizeof(*hdl), GFP_KERNEL);
if (!hdl)
return -ENOMEM;
iwdev = &hdl->device;
iwdev->hdl = hdl;
dev = &iwdev->sc_dev;
if (i40iw_setup_cm_core(iwdev)) {
kfree(iwdev->hdl);
return -ENOMEM;
}
dev->back_dev = (void *)iwdev;
iwdev->ldev = &hdl->ldev;
iwdev->client = client;
mutex_init(&iwdev->pbl_mutex);
i40iw_add_handler(hdl);
do {
status = i40iw_setup_init_state(hdl, ldev, client);
if (status)
break;
iwdev->init_state = INITIAL_STATE;
if (dev->is_pf)
i40iw_wait_pe_ready(dev->hw);
status = i40iw_create_cqp(iwdev);
if (status)
break;
iwdev->init_state = CQP_CREATED;
status = i40iw_hmc_setup(iwdev);
if (status)
break;
status = i40iw_create_ccq(iwdev);
if (status)
break;
iwdev->init_state = CCQ_CREATED;
status = i40iw_initialize_ilq(iwdev);
if (status)
break;
iwdev->init_state = ILQ_CREATED;
status = i40iw_initialize_ieq(iwdev);
if (status)
break;
iwdev->init_state = IEQ_CREATED;
status = i40iw_setup_aeq(iwdev);
if (status)
break;
iwdev->init_state = AEQ_CREATED;
status = i40iw_setup_ceqs(iwdev, ldev);
if (status)
break;
status = i40iw_get_rdma_features(dev);
if (status)
dev->feature_info[I40IW_FEATURE_FW_INFO] =
I40IW_FW_VER_DEFAULT;
iwdev->init_state = CEQ_CREATED;
status = i40iw_initialize_hw_resources(iwdev);
if (status)
break;
i40iw_get_used_rsrc(iwdev);
dev->ccq_ops->ccq_arm(dev->ccq);
status = i40iw_hmc_init_pble(&iwdev->sc_dev, iwdev->pble_rsrc);
if (status)
break;
iwdev->init_state = PBLE_CHUNK_MEM;
iwdev->virtchnl_wq = alloc_ordered_workqueue("iwvch", WQ_MEM_RECLAIM);
status = i40iw_add_mac_ip(iwdev);
if (status)
break;
iwdev->init_state = IP_ADDR_REGISTERED;
if (i40iw_register_rdma_device(iwdev)) {
i40iw_pr_err("register rdma device fail\n");
break;
};
iwdev->init_state = RDMA_DEV_REGISTERED;
iwdev->iw_status = 1;
i40iw_port_ibevent(iwdev);
iwdev->param_wq = alloc_ordered_workqueue("l2params", WQ_MEM_RECLAIM);
if(iwdev->param_wq == NULL)
break;
i40iw_pr_info("i40iw_open completed\n");
return 0;
} while (0);
i40iw_pr_err("status = %d last completion = %d\n", status, iwdev->init_state);
i40iw_deinit_device(iwdev);
return -ERESTART;
}
/**
* i40iw_l2params_worker - worker for l2 params change
* @work: work pointer for l2 params
*/
static void i40iw_l2params_worker(struct work_struct *work)
{
struct l2params_work *dwork =
container_of(work, struct l2params_work, work);
struct i40iw_device *iwdev = dwork->iwdev;
i40iw_change_l2params(&iwdev->vsi, &dwork->l2params);
atomic_dec(&iwdev->params_busy);
kfree(work);
}
/**
* i40iw_l2param_change - handle qs handles for qos and mss change
* @ldev: lan device information
* @client: client for paramater change
* @params: new parameters from L2
*/
static void i40iw_l2param_change(struct i40e_info *ldev, struct i40e_client *client,
struct i40e_params *params)
{
struct i40iw_handler *hdl;
struct i40iw_l2params *l2params;
struct l2params_work *work;
struct i40iw_device *iwdev;
int i;
hdl = i40iw_find_i40e_handler(ldev);
if (!hdl)
return;
iwdev = &hdl->device;
if (atomic_read(&iwdev->params_busy))
return;
work = kzalloc(sizeof(*work), GFP_KERNEL);
if (!work)
return;
atomic_inc(&iwdev->params_busy);
work->iwdev = iwdev;
l2params = &work->l2params;
for (i = 0; i < I40E_CLIENT_MAX_USER_PRIORITY; i++)
l2params->qs_handle_list[i] = params->qos.prio_qos[i].qs_handle;
l2params->mtu = (params->mtu) ? params->mtu : iwdev->vsi.mtu;
INIT_WORK(&work->work, i40iw_l2params_worker);
queue_work(iwdev->param_wq, &work->work);
}
/**
* i40iw_close - client interface operation close for iwarp/uda device
* @ldev: lan device information
* @client: client to close
*
* Called by the lan driver during the processing of client unregister
* Destroy and clean up the driver resources
*/
static void i40iw_close(struct i40e_info *ldev, struct i40e_client *client, bool reset)
{
struct i40iw_device *iwdev;
struct i40iw_handler *hdl;
hdl = i40iw_find_i40e_handler(ldev);
if (!hdl)
return;
iwdev = &hdl->device;
iwdev->closing = true;
if (reset)
iwdev->reset = true;
i40iw_cm_teardown_connections(iwdev, NULL, NULL, true);
destroy_workqueue(iwdev->virtchnl_wq);
i40iw_deinit_device(iwdev);
}
/**
* i40iw_vf_reset - process VF reset
* @ldev: lan device information
* @client: client interface instance
* @vf_id: virtual function id
*
* Called when a VF is reset by the PF
* Destroy and clean up the VF resources
*/
static void i40iw_vf_reset(struct i40e_info *ldev, struct i40e_client *client, u32 vf_id)
{
struct i40iw_handler *hdl;
struct i40iw_sc_dev *dev;
struct i40iw_hmc_fcn_info hmc_fcn_info;
struct i40iw_virt_mem vf_dev_mem;
struct i40iw_vfdev *tmp_vfdev;
unsigned int i;
unsigned long flags;
struct i40iw_device *iwdev;
hdl = i40iw_find_i40e_handler(ldev);
if (!hdl)
return;
dev = &hdl->device.sc_dev;
iwdev = (struct i40iw_device *)dev->back_dev;
for (i = 0; i < I40IW_MAX_PE_ENABLED_VF_COUNT; i++) {
if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id != vf_id))
continue;
/* free all resources allocated on behalf of vf */
tmp_vfdev = dev->vf_dev[i];
spin_lock_irqsave(&iwdev->vsi.pestat->lock, flags);
dev->vf_dev[i] = NULL;
spin_unlock_irqrestore(&iwdev->vsi.pestat->lock, flags);
i40iw_del_hmc_objects(dev, &tmp_vfdev->hmc_info, false, false);
/* remove vf hmc function */
memset(&hmc_fcn_info, 0, sizeof(hmc_fcn_info));
hmc_fcn_info.vf_id = vf_id;
hmc_fcn_info.iw_vf_idx = tmp_vfdev->iw_vf_idx;
hmc_fcn_info.free_fcn = true;
i40iw_cqp_manage_hmc_fcn_cmd(dev, &hmc_fcn_info);
/* free vf_dev */
vf_dev_mem.va = tmp_vfdev;
vf_dev_mem.size = sizeof(struct i40iw_vfdev) +
sizeof(struct i40iw_hmc_obj_info) * I40IW_HMC_IW_MAX;
i40iw_free_virt_mem(dev->hw, &vf_dev_mem);
break;
}
}
/**
* i40iw_vf_enable - enable a number of VFs
* @ldev: lan device information
* @client: client interface instance
* @num_vfs: number of VFs for the PF
*
* Called when the number of VFs changes
*/
static void i40iw_vf_enable(struct i40e_info *ldev,
struct i40e_client *client,
u32 num_vfs)
{
struct i40iw_handler *hdl;
hdl = i40iw_find_i40e_handler(ldev);
if (!hdl)
return;
if (num_vfs > I40IW_MAX_PE_ENABLED_VF_COUNT)
hdl->device.max_enabled_vfs = I40IW_MAX_PE_ENABLED_VF_COUNT;
else
hdl->device.max_enabled_vfs = num_vfs;
}
/**
* i40iw_vf_capable - check if VF capable
* @ldev: lan device information
* @client: client interface instance
* @vf_id: virtual function id
*
* Return 1 if a VF slot is available or if VF is already RDMA enabled
* Return 0 otherwise
*/
static int i40iw_vf_capable(struct i40e_info *ldev,
struct i40e_client *client,
u32 vf_id)
{
struct i40iw_handler *hdl;
struct i40iw_sc_dev *dev;
unsigned int i;
hdl = i40iw_find_i40e_handler(ldev);
if (!hdl)
return 0;
dev = &hdl->device.sc_dev;
for (i = 0; i < hdl->device.max_enabled_vfs; i++) {
if (!dev->vf_dev[i] || (dev->vf_dev[i]->vf_id == vf_id))
return 1;
}
return 0;
}
/**
* i40iw_virtchnl_receive - receive a message through the virtual channel
* @ldev: lan device information
* @client: client interface instance
* @vf_id: virtual function id associated with the message
* @msg: message buffer pointer
* @len: length of the message
*
* Invoke virtual channel receive operation for the given msg
* Return 0 if successful, otherwise return error
*/
static int i40iw_virtchnl_receive(struct i40e_info *ldev,
struct i40e_client *client,
u32 vf_id,
u8 *msg,
u16 len)
{
struct i40iw_handler *hdl;
struct i40iw_sc_dev *dev;
struct i40iw_device *iwdev;
int ret_code = I40IW_NOT_SUPPORTED;
if (!len || !msg)
return I40IW_ERR_PARAM;
hdl = i40iw_find_i40e_handler(ldev);
if (!hdl)
return I40IW_ERR_PARAM;
dev = &hdl->device.sc_dev;
iwdev = dev->back_dev;
if (dev->vchnl_if.vchnl_recv) {
ret_code = dev->vchnl_if.vchnl_recv(dev, vf_id, msg, len);
if (!dev->is_pf) {
atomic_dec(&iwdev->vchnl_msgs);
wake_up(&iwdev->vchnl_waitq);
}
}
return ret_code;
}
/**
* i40iw_vf_clear_to_send - wait to send virtual channel message
* @dev: iwarp device *
* Wait for until virtual channel is clear
* before sending the next message
*
* Returns false if error
* Returns true if clear to send
*/
bool i40iw_vf_clear_to_send(struct i40iw_sc_dev *dev)
{
struct i40iw_device *iwdev;
wait_queue_entry_t wait;
iwdev = dev->back_dev;
if (!wq_has_sleeper(&dev->vf_reqs) &&
(atomic_read(&iwdev->vchnl_msgs) == 0))
return true; /* virtual channel is clear */
init_wait(&wait);
add_wait_queue_exclusive(&dev->vf_reqs, &wait);
if (!wait_event_timeout(dev->vf_reqs,
(atomic_read(&iwdev->vchnl_msgs) == 0),
I40IW_VCHNL_EVENT_TIMEOUT))
dev->vchnl_up = false;
remove_wait_queue(&dev->vf_reqs, &wait);
return dev->vchnl_up;
}
/**
* i40iw_virtchnl_send - send a message through the virtual channel
* @dev: iwarp device
* @vf_id: virtual function id associated with the message
* @msg: virtual channel message buffer pointer
* @len: length of the message
*
* Invoke virtual channel send operation for the given msg
* Return 0 if successful, otherwise return error
*/
static enum i40iw_status_code i40iw_virtchnl_send(struct i40iw_sc_dev *dev,
u32 vf_id,
u8 *msg,
u16 len)
{
struct i40iw_device *iwdev;
struct i40e_info *ldev;
if (!dev || !dev->back_dev)
return I40IW_ERR_BAD_PTR;
iwdev = dev->back_dev;
ldev = iwdev->ldev;
if (ldev && ldev->ops && ldev->ops->virtchnl_send)
return ldev->ops->virtchnl_send(ldev, &i40iw_client, vf_id, msg, len);
return I40IW_ERR_BAD_PTR;
}
/* client interface functions */
static const struct i40e_client_ops i40e_ops = {
.open = i40iw_open,
.close = i40iw_close,
.l2_param_change = i40iw_l2param_change,
.virtchnl_receive = i40iw_virtchnl_receive,
.vf_reset = i40iw_vf_reset,
.vf_enable = i40iw_vf_enable,
.vf_capable = i40iw_vf_capable
};
/**
* i40iw_init_module - driver initialization function
*
* First function to call when the driver is loaded
* Register the driver as i40e client and port mapper client
*/
static int __init i40iw_init_module(void)
{
int ret;
memset(&i40iw_client, 0, sizeof(i40iw_client));
i40iw_client.version.major = CLIENT_IW_INTERFACE_VERSION_MAJOR;
i40iw_client.version.minor = CLIENT_IW_INTERFACE_VERSION_MINOR;
i40iw_client.version.build = CLIENT_IW_INTERFACE_VERSION_BUILD;
i40iw_client.ops = &i40e_ops;
memcpy(i40iw_client.name, i40iw_client_name, I40E_CLIENT_STR_LENGTH);
i40iw_client.type = I40E_CLIENT_IWARP;
spin_lock_init(&i40iw_handler_lock);
ret = i40e_register_client(&i40iw_client);
i40iw_register_notifiers();
return ret;
}
/**
* i40iw_exit_module - driver exit clean up function
*
* The function is called just before the driver is unloaded
* Unregister the driver as i40e client and port mapper client
*/
static void __exit i40iw_exit_module(void)
{
i40iw_unregister_notifiers();
i40e_unregister_client(&i40iw_client);
}
module_init(i40iw_init_module);
module_exit(i40iw_exit_module);