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OpenCloudOS-Kernel/drivers/infiniband/hw/i40iw/i40iw_utils.c

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/*******************************************************************************
*
* 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/ethtool.h>
#include <linux/mii.h>
#include <linux/if_vlan.h>
#include <linux/crc32.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/init.h>
#include <linux/io.h>
#include <asm/irq.h>
#include <asm/byteorder.h>
#include <net/netevent.h>
#include <net/neighbour.h>
#include "i40iw.h"
/**
* i40iw_arp_table - manage arp table
* @iwdev: iwarp device
* @ip_addr: ip address for device
* @mac_addr: mac address ptr
* @action: modify, delete or add
*/
int i40iw_arp_table(struct i40iw_device *iwdev,
u32 *ip_addr,
bool ipv4,
u8 *mac_addr,
u32 action)
{
int arp_index;
int err;
u32 ip[4];
if (ipv4) {
memset(ip, 0, sizeof(ip));
ip[0] = *ip_addr;
} else {
memcpy(ip, ip_addr, sizeof(ip));
}
for (arp_index = 0; (u32)arp_index < iwdev->arp_table_size; arp_index++)
if (memcmp(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip)) == 0)
break;
switch (action) {
case I40IW_ARP_ADD:
if (arp_index != iwdev->arp_table_size)
return -1;
arp_index = 0;
err = i40iw_alloc_resource(iwdev, iwdev->allocated_arps,
iwdev->arp_table_size,
(u32 *)&arp_index,
&iwdev->next_arp_index);
if (err)
return err;
memcpy(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip));
ether_addr_copy(iwdev->arp_table[arp_index].mac_addr, mac_addr);
break;
case I40IW_ARP_RESOLVE:
if (arp_index == iwdev->arp_table_size)
return -1;
break;
case I40IW_ARP_DELETE:
if (arp_index == iwdev->arp_table_size)
return -1;
memset(iwdev->arp_table[arp_index].ip_addr, 0,
sizeof(iwdev->arp_table[arp_index].ip_addr));
eth_zero_addr(iwdev->arp_table[arp_index].mac_addr);
i40iw_free_resource(iwdev, iwdev->allocated_arps, arp_index);
break;
default:
return -1;
}
return arp_index;
}
/**
* i40iw_wr32 - write 32 bits to hw register
* @hw: hardware information including registers
* @reg: register offset
* @value: vvalue to write to register
*/
inline void i40iw_wr32(struct i40iw_hw *hw, u32 reg, u32 value)
{
writel(value, hw->hw_addr + reg);
}
/**
* i40iw_rd32 - read a 32 bit hw register
* @hw: hardware information including registers
* @reg: register offset
*
* Return value of register content
*/
inline u32 i40iw_rd32(struct i40iw_hw *hw, u32 reg)
{
return readl(hw->hw_addr + reg);
}
/**
* i40iw_inetaddr_event - system notifier for ipv4 addr events
* @notfier: not used
* @event: event for notifier
* @ptr: if address
*/
int i40iw_inetaddr_event(struct notifier_block *notifier,
unsigned long event,
void *ptr)
{
struct in_ifaddr *ifa = ptr;
struct net_device *event_netdev = ifa->ifa_dev->dev;
struct net_device *netdev;
struct net_device *upper_dev;
struct i40iw_device *iwdev;
struct i40iw_handler *hdl;
u32 local_ipaddr;
u32 action = I40IW_ARP_ADD;
hdl = i40iw_find_netdev(event_netdev);
if (!hdl)
return NOTIFY_DONE;
iwdev = &hdl->device;
if (iwdev->init_state < IP_ADDR_REGISTERED || iwdev->closing)
return NOTIFY_DONE;
netdev = iwdev->ldev->netdev;
upper_dev = netdev_master_upper_dev_get(netdev);
if (netdev != event_netdev)
return NOTIFY_DONE;
if (upper_dev) {
struct in_device *in;
rcu_read_lock();
in = __in_dev_get_rcu(upper_dev);
local_ipaddr = 0;
if (in) {
struct in_ifaddr *ifa;
ifa = rcu_dereference(in->ifa_list);
if (ifa)
local_ipaddr = ntohl(ifa->ifa_address);
}
rcu_read_unlock();
} else {
local_ipaddr = ntohl(ifa->ifa_address);
}
switch (event) {
case NETDEV_DOWN:
action = I40IW_ARP_DELETE;
/* Fall through */
case NETDEV_UP:
/* Fall through */
case NETDEV_CHANGEADDR:
/* Just skip if no need to handle ARP cache */
if (!local_ipaddr)
break;
i40iw_manage_arp_cache(iwdev,
netdev->dev_addr,
&local_ipaddr,
true,
action);
i40iw_if_notify(iwdev, netdev, &local_ipaddr, true,
(action == I40IW_ARP_ADD) ? true : false);
break;
default:
break;
}
return NOTIFY_DONE;
}
/**
* i40iw_inet6addr_event - system notifier for ipv6 addr events
* @notfier: not used
* @event: event for notifier
* @ptr: if address
*/
int i40iw_inet6addr_event(struct notifier_block *notifier,
unsigned long event,
void *ptr)
{
struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
struct net_device *event_netdev = ifa->idev->dev;
struct net_device *netdev;
struct i40iw_device *iwdev;
struct i40iw_handler *hdl;
u32 local_ipaddr6[4];
u32 action = I40IW_ARP_ADD;
hdl = i40iw_find_netdev(event_netdev);
if (!hdl)
return NOTIFY_DONE;
iwdev = &hdl->device;
if (iwdev->init_state < IP_ADDR_REGISTERED || iwdev->closing)
return NOTIFY_DONE;
netdev = iwdev->ldev->netdev;
if (netdev != event_netdev)
return NOTIFY_DONE;
i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
switch (event) {
case NETDEV_DOWN:
action = I40IW_ARP_DELETE;
/* Fall through */
case NETDEV_UP:
/* Fall through */
case NETDEV_CHANGEADDR:
i40iw_manage_arp_cache(iwdev,
netdev->dev_addr,
local_ipaddr6,
false,
action);
i40iw_if_notify(iwdev, netdev, local_ipaddr6, false,
(action == I40IW_ARP_ADD) ? true : false);
break;
default:
break;
}
return NOTIFY_DONE;
}
/**
* i40iw_net_event - system notifier for netevents
* @notfier: not used
* @event: event for notifier
* @ptr: neighbor
*/
int i40iw_net_event(struct notifier_block *notifier, unsigned long event, void *ptr)
{
struct neighbour *neigh = ptr;
struct i40iw_device *iwdev;
struct i40iw_handler *iwhdl;
__be32 *p;
u32 local_ipaddr[4];
switch (event) {
case NETEVENT_NEIGH_UPDATE:
iwhdl = i40iw_find_netdev((struct net_device *)neigh->dev);
if (!iwhdl)
return NOTIFY_DONE;
iwdev = &iwhdl->device;
if (iwdev->init_state < IP_ADDR_REGISTERED || iwdev->closing)
return NOTIFY_DONE;
p = (__be32 *)neigh->primary_key;
i40iw_copy_ip_ntohl(local_ipaddr, p);
if (neigh->nud_state & NUD_VALID) {
i40iw_manage_arp_cache(iwdev,
neigh->ha,
local_ipaddr,
false,
I40IW_ARP_ADD);
} else {
i40iw_manage_arp_cache(iwdev,
neigh->ha,
local_ipaddr,
false,
I40IW_ARP_DELETE);
}
break;
default:
break;
}
return NOTIFY_DONE;
}
/**
* i40iw_netdevice_event - system notifier for netdev events
* @notfier: not used
* @event: event for notifier
* @ptr: netdev
*/
int i40iw_netdevice_event(struct notifier_block *notifier,
unsigned long event,
void *ptr)
{
struct net_device *event_netdev;
struct net_device *netdev;
struct i40iw_device *iwdev;
struct i40iw_handler *hdl;
event_netdev = netdev_notifier_info_to_dev(ptr);
hdl = i40iw_find_netdev(event_netdev);
if (!hdl)
return NOTIFY_DONE;
iwdev = &hdl->device;
if (iwdev->init_state < RDMA_DEV_REGISTERED || iwdev->closing)
return NOTIFY_DONE;
netdev = iwdev->ldev->netdev;
if (netdev != event_netdev)
return NOTIFY_DONE;
iwdev->iw_status = 1;
switch (event) {
case NETDEV_DOWN:
iwdev->iw_status = 0;
/* Fall through */
case NETDEV_UP:
i40iw_port_ibevent(iwdev);
break;
default:
break;
}
return NOTIFY_DONE;
}
/**
* i40iw_get_cqp_request - get cqp struct
* @cqp: device cqp ptr
* @wait: cqp to be used in wait mode
*/
struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait)
{
struct i40iw_cqp_request *cqp_request = NULL;
unsigned long flags;
spin_lock_irqsave(&cqp->req_lock, flags);
if (!list_empty(&cqp->cqp_avail_reqs)) {
cqp_request = list_entry(cqp->cqp_avail_reqs.next,
struct i40iw_cqp_request, list);
list_del_init(&cqp_request->list);
}
spin_unlock_irqrestore(&cqp->req_lock, flags);
if (!cqp_request) {
cqp_request = kzalloc(sizeof(*cqp_request), GFP_ATOMIC);
if (cqp_request) {
cqp_request->dynamic = true;
INIT_LIST_HEAD(&cqp_request->list);
init_waitqueue_head(&cqp_request->waitq);
}
}
if (!cqp_request) {
i40iw_pr_err("CQP Request Fail: No Memory");
return NULL;
}
if (wait) {
atomic_set(&cqp_request->refcount, 2);
cqp_request->waiting = true;
} else {
atomic_set(&cqp_request->refcount, 1);
}
return cqp_request;
}
/**
* i40iw_free_cqp_request - free cqp request
* @cqp: cqp ptr
* @cqp_request: to be put back in cqp list
*/
void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request)
{
struct i40iw_device *iwdev = container_of(cqp, struct i40iw_device, cqp);
unsigned long flags;
if (cqp_request->dynamic) {
kfree(cqp_request);
} else {
cqp_request->request_done = false;
cqp_request->callback_fcn = NULL;
cqp_request->waiting = false;
spin_lock_irqsave(&cqp->req_lock, flags);
list_add_tail(&cqp_request->list, &cqp->cqp_avail_reqs);
spin_unlock_irqrestore(&cqp->req_lock, flags);
}
wake_up(&iwdev->close_wq);
}
/**
* i40iw_put_cqp_request - dec ref count and free if 0
* @cqp: cqp ptr
* @cqp_request: to be put back in cqp list
*/
void i40iw_put_cqp_request(struct i40iw_cqp *cqp,
struct i40iw_cqp_request *cqp_request)
{
if (atomic_dec_and_test(&cqp_request->refcount))
i40iw_free_cqp_request(cqp, cqp_request);
}
/**
* i40iw_free_pending_cqp_request -free pending cqp request objs
* @cqp: cqp ptr
* @cqp_request: to be put back in cqp list
*/
static void i40iw_free_pending_cqp_request(struct i40iw_cqp *cqp,
struct i40iw_cqp_request *cqp_request)
{
struct i40iw_device *iwdev = container_of(cqp, struct i40iw_device, cqp);
if (cqp_request->waiting) {
cqp_request->compl_info.error = true;
cqp_request->request_done = true;
wake_up(&cqp_request->waitq);
}
i40iw_put_cqp_request(cqp, cqp_request);
wait_event_timeout(iwdev->close_wq,
!atomic_read(&cqp_request->refcount),
1000);
}
/**
* i40iw_cleanup_pending_cqp_op - clean-up cqp with no completions
* @iwdev: iwarp device
*/
void i40iw_cleanup_pending_cqp_op(struct i40iw_device *iwdev)
{
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
struct i40iw_cqp *cqp = &iwdev->cqp;
struct i40iw_cqp_request *cqp_request = NULL;
struct cqp_commands_info *pcmdinfo = NULL;
u32 i, pending_work, wqe_idx;
pending_work = I40IW_RING_WORK_AVAILABLE(cqp->sc_cqp.sq_ring);
wqe_idx = I40IW_RING_GETCURRENT_TAIL(cqp->sc_cqp.sq_ring);
for (i = 0; i < pending_work; i++) {
cqp_request = (struct i40iw_cqp_request *)(unsigned long)cqp->scratch_array[wqe_idx];
if (cqp_request)
i40iw_free_pending_cqp_request(cqp, cqp_request);
wqe_idx = (wqe_idx + 1) % I40IW_RING_GETSIZE(cqp->sc_cqp.sq_ring);
}
while (!list_empty(&dev->cqp_cmd_head)) {
pcmdinfo = (struct cqp_commands_info *)i40iw_remove_head(&dev->cqp_cmd_head);
cqp_request = container_of(pcmdinfo, struct i40iw_cqp_request, info);
if (cqp_request)
i40iw_free_pending_cqp_request(cqp, cqp_request);
}
}
/**
* i40iw_free_qp - callback after destroy cqp completes
* @cqp_request: cqp request for destroy qp
* @num: not used
*/
static void i40iw_free_qp(struct i40iw_cqp_request *cqp_request, u32 num)
{
struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)cqp_request->param;
struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp;
struct i40iw_device *iwdev;
u32 qp_num = iwqp->ibqp.qp_num;
iwdev = iwqp->iwdev;
i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
i40iw_free_qp_resources(iwdev, iwqp, qp_num);
i40iw_rem_devusecount(iwdev);
}
/**
* i40iw_wait_event - wait for completion
* @iwdev: iwarp device
* @cqp_request: cqp request to wait
*/
static int i40iw_wait_event(struct i40iw_device *iwdev,
struct i40iw_cqp_request *cqp_request)
{
struct cqp_commands_info *info = &cqp_request->info;
struct i40iw_cqp *iwcqp = &iwdev->cqp;
struct i40iw_cqp_timeout cqp_timeout;
bool cqp_error = false;
int err_code = 0;
memset(&cqp_timeout, 0, sizeof(cqp_timeout));
cqp_timeout.compl_cqp_cmds = iwdev->sc_dev.cqp_cmd_stats[OP_COMPLETED_COMMANDS];
do {
if (wait_event_timeout(cqp_request->waitq,
cqp_request->request_done, CQP_COMPL_WAIT_TIME))
break;
i40iw_check_cqp_progress(&cqp_timeout, &iwdev->sc_dev);
if (cqp_timeout.count < CQP_TIMEOUT_THRESHOLD)
continue;
i40iw_pr_err("error cqp command 0x%x timed out", info->cqp_cmd);
err_code = -ETIME;
if (!iwdev->reset) {
iwdev->reset = true;
i40iw_request_reset(iwdev);
}
goto done;
} while (1);
cqp_error = cqp_request->compl_info.error;
if (cqp_error) {
i40iw_pr_err("error cqp command 0x%x completion maj = 0x%x min=0x%x\n",
info->cqp_cmd, cqp_request->compl_info.maj_err_code,
cqp_request->compl_info.min_err_code);
err_code = -EPROTO;
goto done;
}
done:
i40iw_put_cqp_request(iwcqp, cqp_request);
return err_code;
}
/**
* i40iw_handle_cqp_op - process cqp command
* @iwdev: iwarp device
* @cqp_request: cqp request to process
*/
enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
struct i40iw_cqp_request
*cqp_request)
{
struct i40iw_sc_dev *dev = &iwdev->sc_dev;
enum i40iw_status_code status;
struct cqp_commands_info *info = &cqp_request->info;
int err_code = 0;
if (iwdev->reset) {
i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
return I40IW_ERR_CQP_COMPL_ERROR;
}
status = i40iw_process_cqp_cmd(dev, info);
if (status) {
i40iw_pr_err("error cqp command 0x%x failed\n", info->cqp_cmd);
i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
return status;
}
if (cqp_request->waiting)
err_code = i40iw_wait_event(iwdev, cqp_request);
if (err_code)
status = I40IW_ERR_CQP_COMPL_ERROR;
return status;
}
/**
* i40iw_add_devusecount - add dev refcount
* @iwdev: dev for refcount
*/
void i40iw_add_devusecount(struct i40iw_device *iwdev)
{
atomic64_inc(&iwdev->use_count);
}
/**
* i40iw_rem_devusecount - decrement refcount for dev
* @iwdev: device
*/
void i40iw_rem_devusecount(struct i40iw_device *iwdev)
{
if (!atomic64_dec_and_test(&iwdev->use_count))
return;
wake_up(&iwdev->close_wq);
}
/**
* i40iw_add_pdusecount - add pd refcount
* @iwpd: pd for refcount
*/
void i40iw_add_pdusecount(struct i40iw_pd *iwpd)
{
atomic_inc(&iwpd->usecount);
}
/**
* i40iw_rem_pdusecount - decrement refcount for pd and free if 0
* @iwpd: pd for refcount
* @iwdev: iwarp device
*/
void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev)
{
if (!atomic_dec_and_test(&iwpd->usecount))
return;
i40iw_free_resource(iwdev, iwdev->allocated_pds, iwpd->sc_pd.pd_id);
}
/**
* i40iw_add_ref - add refcount for qp
* @ibqp: iqarp qp
*/
void i40iw_add_ref(struct ib_qp *ibqp)
{
struct i40iw_qp *iwqp = (struct i40iw_qp *)ibqp;
atomic_inc(&iwqp->refcount);
}
/**
* i40iw_rem_ref - rem refcount for qp and free if 0
* @ibqp: iqarp qp
*/
void i40iw_rem_ref(struct ib_qp *ibqp)
{
struct i40iw_qp *iwqp;
enum i40iw_status_code status;
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
struct i40iw_device *iwdev;
u32 qp_num;
unsigned long flags;
iwqp = to_iwqp(ibqp);
iwdev = iwqp->iwdev;
spin_lock_irqsave(&iwdev->qptable_lock, flags);
if (!atomic_dec_and_test(&iwqp->refcount)) {
spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
return;
}
qp_num = iwqp->ibqp.qp_num;
iwdev->qp_table[qp_num] = NULL;
spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
if (!cqp_request)
return;
cqp_request->callback_fcn = i40iw_free_qp;
cqp_request->param = (void *)&iwqp->sc_qp;
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = OP_QP_DESTROY;
cqp_info->post_sq = 1;
cqp_info->in.u.qp_destroy.qp = &iwqp->sc_qp;
cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
cqp_info->in.u.qp_destroy.remove_hash_idx = true;
status = i40iw_handle_cqp_op(iwdev, cqp_request);
if (!status)
return;
i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
i40iw_free_qp_resources(iwdev, iwqp, qp_num);
i40iw_rem_devusecount(iwdev);
}
/**
* i40iw_get_qp - get qp address
* @device: iwarp device
* @qpn: qp number
*/
struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn)
{
struct i40iw_device *iwdev = to_iwdev(device);
if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp))
return NULL;
return &iwdev->qp_table[qpn]->ibqp;
}
/**
* i40iw_debug_buf - print debug msg and buffer is mask set
* @dev: hardware control device structure
* @mask: mask to compare if to print debug buffer
* @buf: points buffer addr
* @size: saize of buffer to print
*/
void i40iw_debug_buf(struct i40iw_sc_dev *dev,
enum i40iw_debug_flag mask,
char *desc,
u64 *buf,
u32 size)
{
u32 i;
if (!(dev->debug_mask & mask))
return;
i40iw_debug(dev, mask, "%s\n", desc);
i40iw_debug(dev, mask, "starting address virt=%p phy=%llxh\n", buf,
(unsigned long long)virt_to_phys(buf));
for (i = 0; i < size; i += 8)
i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]);
}
/**
* i40iw_get_hw_addr - return hw addr
* @par: points to shared dev
*/
u8 __iomem *i40iw_get_hw_addr(void *par)
{
struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par;
return dev->hw->hw_addr;
}
/**
* i40iw_remove_head - return head entry and remove from list
* @list: list for entry
*/
void *i40iw_remove_head(struct list_head *list)
{
struct list_head *entry;
if (list_empty(list))
return NULL;
entry = (void *)list->next;
list_del(entry);
return (void *)entry;
}
/**
* i40iw_allocate_dma_mem - Memory alloc helper fn
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to fill out
* @size: size of memory requested
* @alignment: what to align the allocation to
*/
enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw,
struct i40iw_dma_mem *mem,
u64 size,
u32 alignment)
{
struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
if (!mem)
return I40IW_ERR_PARAM;
mem->size = ALIGN(size, alignment);
mem->va = dma_alloc_coherent(&pcidev->dev, mem->size,
(dma_addr_t *)&mem->pa, GFP_KERNEL);
if (!mem->va)
return I40IW_ERR_NO_MEMORY;
return 0;
}
/**
* i40iw_free_dma_mem - Memory free helper fn
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to free
*/
void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem)
{
struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
if (!mem || !mem->va)
return;
dma_free_coherent(&pcidev->dev, mem->size,
mem->va, (dma_addr_t)mem->pa);
mem->va = NULL;
}
/**
* i40iw_allocate_virt_mem - virtual memory alloc helper fn
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to fill out
* @size: size of memory requested
*/
enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
struct i40iw_virt_mem *mem,
u32 size)
{
if (!mem)
return I40IW_ERR_PARAM;
mem->size = size;
mem->va = kzalloc(size, GFP_KERNEL);
if (mem->va)
return 0;
else
return I40IW_ERR_NO_MEMORY;
}
/**
* i40iw_free_virt_mem - virtual memory free helper fn
* @hw: pointer to the HW structure
* @mem: ptr to mem struct to free
*/
enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
struct i40iw_virt_mem *mem)
{
if (!mem)
return I40IW_ERR_PARAM;
/*
* mem->va points to the parent of mem, so both mem and mem->va
* can not be touched once mem->va is freed
*/
kfree(mem->va);
return 0;
}
/**
* i40iw_cqp_sds_cmd - create cqp command for sd
* @dev: hardware control device structure
* @sd_info: information for sd cqp
*
*/
enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
struct i40iw_update_sds_info *sdinfo)
{
enum i40iw_status_code status;
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
if (!cqp_request)
return I40IW_ERR_NO_MEMORY;
cqp_info = &cqp_request->info;
memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
sizeof(cqp_info->in.u.update_pe_sds.info));
cqp_info->cqp_cmd = OP_UPDATE_PE_SDS;
cqp_info->post_sq = 1;
cqp_info->in.u.update_pe_sds.dev = dev;
cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
status = i40iw_handle_cqp_op(iwdev, cqp_request);
if (status)
i40iw_pr_err("CQP-OP Update SD's fail");
return status;
}
/**
* i40iw_qp_suspend_resume - cqp command for suspend/resume
* @dev: hardware control device structure
* @qp: hardware control qp
* @suspend: flag if suspend or resume
*/
void i40iw_qp_suspend_resume(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp, bool suspend)
{
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
struct i40iw_cqp_request *cqp_request;
struct i40iw_sc_cqp *cqp = dev->cqp;
struct cqp_commands_info *cqp_info;
enum i40iw_status_code status;
cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
if (!cqp_request)
return;
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = (suspend) ? OP_SUSPEND : OP_RESUME;
cqp_info->in.u.suspend_resume.cqp = cqp;
cqp_info->in.u.suspend_resume.qp = qp;
cqp_info->in.u.suspend_resume.scratch = (uintptr_t)cqp_request;
status = i40iw_handle_cqp_op(iwdev, cqp_request);
if (status)
i40iw_pr_err("CQP-OP QP Suspend/Resume fail");
}
/**
* i40iw_term_modify_qp - modify qp for term message
* @qp: hardware control qp
* @next_state: qp's next state
* @term: terminate code
* @term_len: length
*/
void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
{
struct i40iw_qp *iwqp;
iwqp = (struct i40iw_qp *)qp->back_qp;
i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
};
/**
* i40iw_terminate_done - after terminate is completed
* @qp: hardware control qp
* @timeout_occurred: indicates if terminate timer expired
*/
void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
{
struct i40iw_qp *iwqp;
u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
u8 hte = 0;
bool first_time;
unsigned long flags;
iwqp = (struct i40iw_qp *)qp->back_qp;
spin_lock_irqsave(&iwqp->lock, flags);
if (iwqp->hte_added) {
iwqp->hte_added = 0;
hte = 1;
}
first_time = !(qp->term_flags & I40IW_TERM_DONE);
qp->term_flags |= I40IW_TERM_DONE;
spin_unlock_irqrestore(&iwqp->lock, flags);
if (first_time) {
if (!timeout_occurred)
i40iw_terminate_del_timer(qp);
else
next_iwarp_state = I40IW_QP_STATE_CLOSING;
i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
i40iw_cm_disconn(iwqp);
}
}
/**
* i40iw_terminate_imeout - timeout happened
* @context: points to iwarp qp
*/
static void i40iw_terminate_timeout(struct timer_list *t)
{
struct i40iw_qp *iwqp = from_timer(iwqp, t, terminate_timer);
struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
i40iw_terminate_done(qp, 1);
i40iw_rem_ref(&iwqp->ibqp);
}
/**
* i40iw_terminate_start_timer - start terminate timeout
* @qp: hardware control qp
*/
void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
{
struct i40iw_qp *iwqp;
iwqp = (struct i40iw_qp *)qp->back_qp;
i40iw_add_ref(&iwqp->ibqp);
timer_setup(&iwqp->terminate_timer, i40iw_terminate_timeout, 0);
iwqp->terminate_timer.expires = jiffies + HZ;
add_timer(&iwqp->terminate_timer);
}
/**
* i40iw_terminate_del_timer - delete terminate timeout
* @qp: hardware control qp
*/
void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
{
struct i40iw_qp *iwqp;
iwqp = (struct i40iw_qp *)qp->back_qp;
if (del_timer(&iwqp->terminate_timer))
i40iw_rem_ref(&iwqp->ibqp);
}
/**
* i40iw_cqp_generic_worker - generic worker for cqp
* @work: work pointer
*/
static void i40iw_cqp_generic_worker(struct work_struct *work)
{
struct i40iw_virtchnl_work_info *work_info =
&((struct virtchnl_work *)work)->work_info;
if (work_info->worker_vf_dev)
work_info->callback_fcn(work_info->worker_vf_dev);
}
/**
* i40iw_cqp_spawn_worker - spawn worket thread
* @iwdev: device struct pointer
* @work_info: work request info
* @iw_vf_idx: virtual function index
*/
void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
struct i40iw_virtchnl_work_info *work_info,
u32 iw_vf_idx)
{
struct virtchnl_work *work;
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
work = &iwdev->virtchnl_w[iw_vf_idx];
memcpy(&work->work_info, work_info, sizeof(*work_info));
INIT_WORK(&work->work, i40iw_cqp_generic_worker);
queue_work(iwdev->virtchnl_wq, &work->work);
}
/**
* i40iw_cqp_manage_hmc_fcn_worker -
* @work: work pointer for hmc info
*/
static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
{
struct i40iw_cqp_request *cqp_request =
((struct virtchnl_work *)work)->cqp_request;
struct i40iw_ccq_cqe_info ccq_cqe_info;
struct i40iw_hmc_fcn_info *hmcfcninfo =
&cqp_request->info.in.u.manage_hmc_pm.info;
struct i40iw_device *iwdev =
(struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev;
ccq_cqe_info.cqp = NULL;
ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code;
ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code;
ccq_cqe_info.op_code = cqp_request->compl_info.op_code;
ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val;
ccq_cqe_info.scratch = 0;
ccq_cqe_info.error = cqp_request->compl_info.error;
hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev,
hmcfcninfo->cqp_callback_param, &ccq_cqe_info);
i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
}
/**
* i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion
* @cqp_request: cqp request info struct for hmc fun
* @unused: unused param of callback
*/
static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
u32 unused)
{
struct virtchnl_work *work;
struct i40iw_hmc_fcn_info *hmcfcninfo =
&cqp_request->info.in.u.manage_hmc_pm.info;
struct i40iw_device *iwdev =
(struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->
back_dev;
if (hmcfcninfo && hmcfcninfo->callback_fcn) {
i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__);
atomic_inc(&cqp_request->refcount);
work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx];
work->cqp_request = cqp_request;
INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker);
queue_work(iwdev->virtchnl_wq, &work->work);
i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__);
} else {
i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
}
}
/**
* i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
* @dev: hardware control device structure
* @hmcfcninfo: info for hmc
*/
enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
struct i40iw_hmc_fcn_info *hmcfcninfo)
{
enum i40iw_status_code status;
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
if (!cqp_request)
return I40IW_ERR_NO_MEMORY;
cqp_info = &cqp_request->info;
cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback;
cqp_request->param = hmcfcninfo;
memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo,
sizeof(*hmcfcninfo));
cqp_info->in.u.manage_hmc_pm.dev = dev;
cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE;
cqp_info->post_sq = 1;
cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request;
status = i40iw_handle_cqp_op(iwdev, cqp_request);
if (status)
i40iw_pr_err("CQP-OP Manage HMC fail");
return status;
}
/**
* i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm
* @iwdev: function device struct
* @values_mem: buffer for fpm
* @hmc_fn_id: function id for fpm
*/
enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
struct i40iw_dma_mem *values_mem,
u8 hmc_fn_id)
{
enum i40iw_status_code status;
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
if (!cqp_request)
return I40IW_ERR_NO_MEMORY;
cqp_info = &cqp_request->info;
cqp_request->param = NULL;
cqp_info->in.u.query_fpm_values.cqp = dev->cqp;
cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa;
cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va;
cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id;
cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES;
cqp_info->post_sq = 1;
cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request;
status = i40iw_handle_cqp_op(iwdev, cqp_request);
if (status)
i40iw_pr_err("CQP-OP Query FPM fail");
return status;
}
/**
* i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw
* @dev: hardware control device structure
* @values_mem: buffer with fpm values
* @hmc_fn_id: function id for fpm
*/
enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
struct i40iw_dma_mem *values_mem,
u8 hmc_fn_id)
{
enum i40iw_status_code status;
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
if (!cqp_request)
return I40IW_ERR_NO_MEMORY;
cqp_info = &cqp_request->info;
cqp_request->param = NULL;
cqp_info->in.u.commit_fpm_values.cqp = dev->cqp;
cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa;
cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va;
cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id;
cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES;
cqp_info->post_sq = 1;
cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request;
status = i40iw_handle_cqp_op(iwdev, cqp_request);
if (status)
i40iw_pr_err("CQP-OP Commit FPM fail");
return status;
}
/**
* i40iw_vf_wait_vchnl_resp - wait for channel msg
* @iwdev: function's device struct
*/
enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
{
struct i40iw_device *iwdev = dev->back_dev;
int timeout_ret;
i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
__func__, __LINE__, dev, iwdev);
atomic_set(&iwdev->vchnl_msgs, 2);
timeout_ret = wait_event_timeout(iwdev->vchnl_waitq,
(atomic_read(&iwdev->vchnl_msgs) == 1),
I40IW_VCHNL_EVENT_TIMEOUT);
atomic_dec(&iwdev->vchnl_msgs);
if (!timeout_ret) {
i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret);
atomic_set(&iwdev->vchnl_msgs, 0);
dev->vchnl_up = false;
return I40IW_ERR_TIMEOUT;
}
wake_up(&dev->vf_reqs);
return 0;
}
/**
* i40iw_cqp_cq_create_cmd - create a cq for the cqp
* @dev: device pointer
* @cq: pointer to created cq
*/
enum i40iw_status_code i40iw_cqp_cq_create_cmd(struct i40iw_sc_dev *dev,
struct i40iw_sc_cq *cq)
{
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
struct i40iw_cqp *iwcqp = &iwdev->cqp;
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
enum i40iw_status_code status;
cqp_request = i40iw_get_cqp_request(iwcqp, true);
if (!cqp_request)
return I40IW_ERR_NO_MEMORY;
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = OP_CQ_CREATE;
cqp_info->post_sq = 1;
cqp_info->in.u.cq_create.cq = cq;
cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
status = i40iw_handle_cqp_op(iwdev, cqp_request);
if (status)
i40iw_pr_err("CQP-OP Create QP fail");
return status;
}
/**
* i40iw_cqp_qp_create_cmd - create a qp for the cqp
* @dev: device pointer
* @qp: pointer to created qp
*/
enum i40iw_status_code i40iw_cqp_qp_create_cmd(struct i40iw_sc_dev *dev,
struct i40iw_sc_qp *qp)
{
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
struct i40iw_cqp *iwcqp = &iwdev->cqp;
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
struct i40iw_create_qp_info *qp_info;
enum i40iw_status_code status;
cqp_request = i40iw_get_cqp_request(iwcqp, true);
if (!cqp_request)
return I40IW_ERR_NO_MEMORY;
cqp_info = &cqp_request->info;
qp_info = &cqp_request->info.in.u.qp_create.info;
memset(qp_info, 0, sizeof(*qp_info));
qp_info->cq_num_valid = true;
qp_info->next_iwarp_state = I40IW_QP_STATE_RTS;
cqp_info->cqp_cmd = OP_QP_CREATE;
cqp_info->post_sq = 1;
cqp_info->in.u.qp_create.qp = qp;
cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
status = i40iw_handle_cqp_op(iwdev, cqp_request);
if (status)
i40iw_pr_err("CQP-OP QP create fail");
return status;
}
/**
* i40iw_cqp_cq_destroy_cmd - destroy the cqp cq
* @dev: device pointer
* @cq: pointer to cq
*/
void i40iw_cqp_cq_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_cq *cq)
{
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
i40iw_cq_wq_destroy(iwdev, cq);
}
/**
* i40iw_cqp_qp_destroy_cmd - destroy the cqp
* @dev: device pointer
* @qp: pointer to qp
*/
void i40iw_cqp_qp_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
{
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
struct i40iw_cqp *iwcqp = &iwdev->cqp;
struct i40iw_cqp_request *cqp_request;
struct cqp_commands_info *cqp_info;
enum i40iw_status_code status;
cqp_request = i40iw_get_cqp_request(iwcqp, true);
if (!cqp_request)
return;
cqp_info = &cqp_request->info;
memset(cqp_info, 0, sizeof(*cqp_info));
cqp_info->cqp_cmd = OP_QP_DESTROY;
cqp_info->post_sq = 1;
cqp_info->in.u.qp_destroy.qp = qp;
cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
cqp_info->in.u.qp_destroy.remove_hash_idx = true;
status = i40iw_handle_cqp_op(iwdev, cqp_request);
if (status)
i40iw_pr_err("CQP QP_DESTROY fail");
}
/**
* i40iw_ieq_mpa_crc_ae - generate AE for crc error
* @dev: hardware control device structure
* @qp: hardware control qp
*/
void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
{
struct i40iw_gen_ae_info info;
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__);
info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR;
info.ae_source = I40IW_AE_SOURCE_RQ;
i40iw_gen_ae(iwdev, qp, &info, false);
}
/**
* i40iw_init_hash_desc - initialize hash for crc calculation
* @desc: cryption type
*/
enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
{
struct crypto_shash *tfm;
struct shash_desc *tdesc;
tfm = crypto_alloc_shash("crc32c", 0, 0);
if (IS_ERR(tfm))
return I40IW_ERR_MPA_CRC;
tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
GFP_KERNEL);
if (!tdesc) {
crypto_free_shash(tfm);
return I40IW_ERR_MPA_CRC;
}
tdesc->tfm = tfm;
*desc = tdesc;
return 0;
}
/**
* i40iw_free_hash_desc - free hash desc
* @desc: to be freed
*/
void i40iw_free_hash_desc(struct shash_desc *desc)
{
if (desc) {
crypto_free_shash(desc->tfm);
kfree(desc);
}
}
/**
* i40iw_alloc_query_fpm_buf - allocate buffer for fpm
* @dev: hardware control device structure
* @mem: buffer ptr for fpm to be allocated
* @return: memory allocation status
*/
enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev,
struct i40iw_dma_mem *mem)
{
enum i40iw_status_code status;
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE,
I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
return status;
}
/**
* i40iw_ieq_check_mpacrc - check if mpa crc is OK
* @desc: desc for hash
* @addr: address of buffer for crc
* @length: length of buffer
* @value: value to be compared
*/
enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
void *addr,
u32 length,
u32 value)
{
u32 crc = 0;
int ret;
enum i40iw_status_code ret_code = 0;
crypto_shash_init(desc);
ret = crypto_shash_update(desc, addr, length);
if (!ret)
crypto_shash_final(desc, (u8 *)&crc);
if (crc != value) {
i40iw_pr_err("mpa crc check fail\n");
ret_code = I40IW_ERR_MPA_CRC;
}
return ret_code;
}
/**
* i40iw_ieq_get_qp - get qp based on quad in puda buffer
* @dev: hardware control device structure
* @buf: receive puda buffer on exception q
*/
struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev,
struct i40iw_puda_buf *buf)
{
struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
struct i40iw_qp *iwqp;
struct i40iw_cm_node *cm_node;
u32 loc_addr[4], rem_addr[4];
u16 loc_port, rem_port;
struct ipv6hdr *ip6h;
struct iphdr *iph = (struct iphdr *)buf->iph;
struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
if (iph->version == 4) {
memset(loc_addr, 0, sizeof(loc_addr));
loc_addr[0] = ntohl(iph->daddr);
memset(rem_addr, 0, sizeof(rem_addr));
rem_addr[0] = ntohl(iph->saddr);
} else {
ip6h = (struct ipv6hdr *)buf->iph;
i40iw_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
i40iw_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
}
loc_port = ntohs(tcph->dest);
rem_port = ntohs(tcph->source);
cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
loc_addr, false, true);
if (!cm_node)
return NULL;
iwqp = cm_node->iwqp;
return &iwqp->sc_qp;
}
/**
* i40iw_ieq_update_tcpip_info - update tcpip in the buffer
* @buf: puda to update
* @length: length of buffer
* @seqnum: seq number for tcp
*/
void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum)
{
struct tcphdr *tcph;
struct iphdr *iph;
u16 iphlen;
u16 packetsize;
u8 *addr = (u8 *)buf->mem.va;
iphlen = (buf->ipv4) ? 20 : 40;
iph = (struct iphdr *)(addr + buf->maclen);
tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
packetsize = length + buf->tcphlen + iphlen;
iph->tot_len = htons(packetsize);
tcph->seq = htonl(seqnum);
}
/**
* i40iw_puda_get_tcpip_info - get tcpip info from puda buffer
* @info: to get information
* @buf: puda buffer
*/
enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
struct i40iw_puda_buf *buf)
{
struct iphdr *iph;
struct ipv6hdr *ip6h;
struct tcphdr *tcph;
u16 iphlen;
u16 pkt_len;
u8 *mem = (u8 *)buf->mem.va;
struct ethhdr *ethh = (struct ethhdr *)buf->mem.va;
if (ethh->h_proto == htons(0x8100)) {
info->vlan_valid = true;
buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) & VLAN_VID_MASK;
}
buf->maclen = (info->vlan_valid) ? 18 : 14;
iphlen = (info->l3proto) ? 40 : 20;
buf->ipv4 = (info->l3proto) ? false : true;
buf->iph = mem + buf->maclen;
iph = (struct iphdr *)buf->iph;
buf->tcph = buf->iph + iphlen;
tcph = (struct tcphdr *)buf->tcph;
if (buf->ipv4) {
pkt_len = ntohs(iph->tot_len);
} else {
ip6h = (struct ipv6hdr *)buf->iph;
pkt_len = ntohs(ip6h->payload_len) + iphlen;
}
buf->totallen = pkt_len + buf->maclen;
if (info->payload_len < buf->totallen) {
i40iw_pr_err("payload_len = 0x%x totallen expected0x%x\n",
info->payload_len, buf->totallen);
return I40IW_ERR_INVALID_SIZE;
}
buf->tcphlen = (tcph->doff) << 2;
buf->datalen = pkt_len - iphlen - buf->tcphlen;
buf->data = (buf->datalen) ? buf->tcph + buf->tcphlen : NULL;
buf->hdrlen = buf->maclen + iphlen + buf->tcphlen;
buf->seqnum = ntohl(tcph->seq);
return 0;
}
/**
* i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats
* @vsi: pointer to the vsi structure
*/
static void i40iw_hw_stats_timeout(struct timer_list *t)
{
struct i40iw_vsi_pestat *pf_devstat = from_timer(pf_devstat, t,
stats_timer);
struct i40iw_sc_vsi *sc_vsi = pf_devstat->vsi;
struct i40iw_sc_dev *pf_dev = sc_vsi->dev;
struct i40iw_vsi_pestat *vf_devstat = NULL;
u16 iw_vf_idx;
unsigned long flags;
/*PF*/
i40iw_hw_stats_read_all(pf_devstat, &pf_devstat->hw_stats);
for (iw_vf_idx = 0; iw_vf_idx < I40IW_MAX_PE_ENABLED_VF_COUNT; iw_vf_idx++) {
spin_lock_irqsave(&pf_devstat->lock, flags);
if (pf_dev->vf_dev[iw_vf_idx]) {
if (pf_dev->vf_dev[iw_vf_idx]->stats_initialized) {
vf_devstat = &pf_dev->vf_dev[iw_vf_idx]->pestat;
i40iw_hw_stats_read_all(vf_devstat, &vf_devstat->hw_stats);
}
}
spin_unlock_irqrestore(&pf_devstat->lock, flags);
}
mod_timer(&pf_devstat->stats_timer,
jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
}
/**
* i40iw_hw_stats_start_timer - Start periodic stats timer
* @vsi: pointer to the vsi structure
*/
void i40iw_hw_stats_start_timer(struct i40iw_sc_vsi *vsi)
{
struct i40iw_vsi_pestat *devstat = vsi->pestat;
timer_setup(&devstat->stats_timer, i40iw_hw_stats_timeout, 0);
mod_timer(&devstat->stats_timer,
jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
}
/**
* i40iw_hw_stats_stop_timer - Delete periodic stats timer
* @vsi: pointer to the vsi structure
*/
void i40iw_hw_stats_stop_timer(struct i40iw_sc_vsi *vsi)
{
struct i40iw_vsi_pestat *devstat = vsi->pestat;
del_timer_sync(&devstat->stats_timer);
}
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