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android-kvm / linux / 15fb96a35db7aad8eb7cf98206b10e50a966e388 / . / drivers / infiniband / hw / irdma / utils.c
blob: 71e1c5d347092f9870dc349975b8a36309aa37ed [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
/* Copyright (c) 2015 - 2021 Intel Corporation */
#include "main.h"
/**
* irdma_arp_table -manage arp table
* @rf: RDMA PCI function
* @ip_addr: ip address for device
* @ipv4: IPv4 flag
* @mac_addr: mac address ptr
* @action: modify, delete or add
*/
int irdma_arp_table(struct irdma_pci_f *rf, u32 *ip_addr, bool ipv4,
const u8 *mac_addr, u32 action)
{
unsigned long flags;
int arp_index;
u32 ip[4] = {};
if (ipv4)
ip[0] = *ip_addr;
else
memcpy(ip, ip_addr, sizeof(ip));
spin_lock_irqsave(&rf->arp_lock, flags);
for (arp_index = 0; (u32)arp_index < rf->arp_table_size; arp_index++) {
if (!memcmp(rf->arp_table[arp_index].ip_addr, ip, sizeof(ip)))
break;
}
switch (action) {
case IRDMA_ARP_ADD:
if (arp_index != rf->arp_table_size) {
arp_index = -1;
break;
}
arp_index = 0;
if (irdma_alloc_rsrc(rf, rf->allocated_arps, rf->arp_table_size,
(u32 *)&arp_index, &rf->next_arp_index)) {
arp_index = -1;
break;
}
memcpy(rf->arp_table[arp_index].ip_addr, ip,
sizeof(rf->arp_table[arp_index].ip_addr));
ether_addr_copy(rf->arp_table[arp_index].mac_addr, mac_addr);
break;
case IRDMA_ARP_RESOLVE:
if (arp_index == rf->arp_table_size)
arp_index = -1;
break;
case IRDMA_ARP_DELETE:
if (arp_index == rf->arp_table_size) {
arp_index = -1;
break;
}
memset(rf->arp_table[arp_index].ip_addr, 0,
sizeof(rf->arp_table[arp_index].ip_addr));
eth_zero_addr(rf->arp_table[arp_index].mac_addr);
irdma_free_rsrc(rf, rf->allocated_arps, arp_index);
break;
default:
arp_index = -1;
break;
}
spin_unlock_irqrestore(&rf->arp_lock, flags);
return arp_index;
}
/**
* irdma_add_arp - add a new arp entry if needed
* @rf: RDMA function
* @ip: IP address
* @ipv4: IPv4 flag
* @mac: MAC address
*/
int irdma_add_arp(struct irdma_pci_f *rf, u32 *ip, bool ipv4, const u8 *mac)
{
int arpidx;
arpidx = irdma_arp_table(rf, &ip[0], ipv4, NULL, IRDMA_ARP_RESOLVE);
if (arpidx >= 0) {
if (ether_addr_equal(rf->arp_table[arpidx].mac_addr, mac))
return arpidx;
irdma_manage_arp_cache(rf, rf->arp_table[arpidx].mac_addr, ip,
ipv4, IRDMA_ARP_DELETE);
}
irdma_manage_arp_cache(rf, mac, ip, ipv4, IRDMA_ARP_ADD);
return irdma_arp_table(rf, ip, ipv4, NULL, IRDMA_ARP_RESOLVE);
}
/**
* wr32 - write 32 bits to hw register
* @hw: hardware information including registers
* @reg: register offset
* @val: value to write to register
*/
inline void wr32(struct irdma_hw *hw, u32 reg, u32 val)
{
writel(val, hw->hw_addr + reg);
}
/**
* rd32 - read a 32 bit hw register
* @hw: hardware information including registers
* @reg: register offset
*
* Return value of register content
*/
inline u32 rd32(struct irdma_hw *hw, u32 reg)
{
return readl(hw->hw_addr + reg);
}
/**
* rd64 - read a 64 bit hw register
* @hw: hardware information including registers
* @reg: register offset
*
* Return value of register content
*/
inline u64 rd64(struct irdma_hw *hw, u32 reg)
{
return readq(hw->hw_addr + reg);
}
static void irdma_gid_change_event(struct ib_device *ibdev)
{
struct ib_event ib_event;
ib_event.event = IB_EVENT_GID_CHANGE;
ib_event.device = ibdev;
ib_event.element.port_num = 1;
ib_dispatch_event(&ib_event);
}
/**
* irdma_inetaddr_event - system notifier for ipv4 addr events
* @notifier: not used
* @event: event for notifier
* @ptr: if address
*/
int irdma_inetaddr_event(struct notifier_block *notifier, unsigned long event,
void *ptr)
{
struct in_ifaddr *ifa = ptr;
struct net_device *real_dev, *netdev = ifa->ifa_dev->dev;
struct irdma_device *iwdev;
struct ib_device *ibdev;
u32 local_ipaddr;
real_dev = rdma_vlan_dev_real_dev(netdev);
if (!real_dev)
real_dev = netdev;
ibdev = ib_device_get_by_netdev(real_dev, RDMA_DRIVER_IRDMA);
if (!ibdev)
return NOTIFY_DONE;
iwdev = to_iwdev(ibdev);
local_ipaddr = ntohl(ifa->ifa_address);
ibdev_dbg(&iwdev->ibdev,
"DEV: netdev %p event %lu local_ip=%pI4 MAC=%pM\n", real_dev,
event, &local_ipaddr, real_dev->dev_addr);
switch (event) {
case NETDEV_DOWN:
irdma_manage_arp_cache(iwdev->rf, real_dev->dev_addr,
&local_ipaddr, true, IRDMA_ARP_DELETE);
irdma_if_notify(iwdev, real_dev, &local_ipaddr, true, false);
irdma_gid_change_event(&iwdev->ibdev);
break;
case NETDEV_UP:
case NETDEV_CHANGEADDR:
irdma_add_arp(iwdev->rf, &local_ipaddr, true, real_dev->dev_addr);
irdma_if_notify(iwdev, real_dev, &local_ipaddr, true, true);
irdma_gid_change_event(&iwdev->ibdev);
break;
default:
break;
}
ib_device_put(ibdev);
return NOTIFY_DONE;
}
/**
* irdma_inet6addr_event - system notifier for ipv6 addr events
* @notifier: not used
* @event: event for notifier
* @ptr: if address
*/
int irdma_inet6addr_event(struct notifier_block *notifier, unsigned long event,
void *ptr)
{
struct inet6_ifaddr *ifa = ptr;
struct net_device *real_dev, *netdev = ifa->idev->dev;
struct irdma_device *iwdev;
struct ib_device *ibdev;
u32 local_ipaddr6[4];
real_dev = rdma_vlan_dev_real_dev(netdev);
if (!real_dev)
real_dev = netdev;
ibdev = ib_device_get_by_netdev(real_dev, RDMA_DRIVER_IRDMA);
if (!ibdev)
return NOTIFY_DONE;
iwdev = to_iwdev(ibdev);
irdma_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
ibdev_dbg(&iwdev->ibdev,
"DEV: netdev %p event %lu local_ip=%pI6 MAC=%pM\n", real_dev,
event, local_ipaddr6, real_dev->dev_addr);
switch (event) {
case NETDEV_DOWN:
irdma_manage_arp_cache(iwdev->rf, real_dev->dev_addr,
local_ipaddr6, false, IRDMA_ARP_DELETE);
irdma_if_notify(iwdev, real_dev, local_ipaddr6, false, false);
irdma_gid_change_event(&iwdev->ibdev);
break;
case NETDEV_UP:
case NETDEV_CHANGEADDR:
irdma_add_arp(iwdev->rf, local_ipaddr6, false,
real_dev->dev_addr);
irdma_if_notify(iwdev, real_dev, local_ipaddr6, false, true);
irdma_gid_change_event(&iwdev->ibdev);
break;
default:
break;
}
ib_device_put(ibdev);
return NOTIFY_DONE;
}
/**
* irdma_net_event - system notifier for net events
* @notifier: not used
* @event: event for notifier
* @ptr: neighbor
*/
int irdma_net_event(struct notifier_block *notifier, unsigned long event,
void *ptr)
{
struct neighbour *neigh = ptr;
struct net_device *real_dev, *netdev = (struct net_device *)neigh->dev;
struct irdma_device *iwdev;
struct ib_device *ibdev;
__be32 *p;
u32 local_ipaddr[4] = {};
bool ipv4 = true;
switch (event) {
case NETEVENT_NEIGH_UPDATE:
real_dev = rdma_vlan_dev_real_dev(netdev);
if (!real_dev)
real_dev = netdev;
ibdev = ib_device_get_by_netdev(real_dev, RDMA_DRIVER_IRDMA);
if (!ibdev)
return NOTIFY_DONE;
iwdev = to_iwdev(ibdev);
p = (__be32 *)neigh->primary_key;
if (neigh->tbl->family == AF_INET6) {
ipv4 = false;
irdma_copy_ip_ntohl(local_ipaddr, p);
} else {
local_ipaddr[0] = ntohl(*p);
}
ibdev_dbg(&iwdev->ibdev,
"DEV: netdev %p state %d local_ip=%pI4 MAC=%pM\n",
iwdev->netdev, neigh->nud_state, local_ipaddr,
neigh->ha);
if (neigh->nud_state & NUD_VALID)
irdma_add_arp(iwdev->rf, local_ipaddr, ipv4, neigh->ha);
else
irdma_manage_arp_cache(iwdev->rf, neigh->ha,
local_ipaddr, ipv4,
IRDMA_ARP_DELETE);
ib_device_put(ibdev);
break;
default:
break;
}
return NOTIFY_DONE;
}
/**
* irdma_netdevice_event - system notifier for netdev events
* @notifier: not used
* @event: event for notifier
* @ptr: netdev
*/
int irdma_netdevice_event(struct notifier_block *notifier, unsigned long event,
void *ptr)
{
struct irdma_device *iwdev;
struct ib_device *ibdev;
struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
ibdev = ib_device_get_by_netdev(netdev, RDMA_DRIVER_IRDMA);
if (!ibdev)
return NOTIFY_DONE;
iwdev = to_iwdev(ibdev);
iwdev->iw_status = 1;
switch (event) {
case NETDEV_DOWN:
iwdev->iw_status = 0;
fallthrough;
case NETDEV_UP:
irdma_port_ibevent(iwdev);
break;
default:
break;
}
ib_device_put(ibdev);
return NOTIFY_DONE;
}
/**
* irdma_add_ipv6_addr - add ipv6 address to the hw arp table
* @iwdev: irdma device
*/
static void irdma_add_ipv6_addr(struct irdma_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) &&
(READ_ONCE(ip_dev->flags) & IFF_UP)) {
idev = __in6_dev_get(ip_dev);
if (!idev) {
ibdev_err(&iwdev->ibdev, "ipv6 inet device not found\n");
break;
}
list_for_each_entry_safe (ifp, tmp, &idev->addr_list,
if_list) {
ibdev_dbg(&iwdev->ibdev,
"INIT: IP=%pI6, vlan_id=%d, MAC=%pM\n",
&ifp->addr,
rdma_vlan_dev_vlan_id(ip_dev),
ip_dev->dev_addr);
irdma_copy_ip_ntohl(local_ipaddr6,
ifp->addr.in6_u.u6_addr32);
irdma_manage_arp_cache(iwdev->rf,
ip_dev->dev_addr,
local_ipaddr6, false,
IRDMA_ARP_ADD);
}
}
}
rcu_read_unlock();
}
/**
* irdma_add_ipv4_addr - add ipv4 address to the hw arp table
* @iwdev: irdma device
*/
static void irdma_add_ipv4_addr(struct irdma_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) {
ibdev_dbg(&iwdev->ibdev, "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);
irdma_manage_arp_cache(iwdev->rf, dev->dev_addr,
&ip_addr, true,
IRDMA_ARP_ADD);
}
}
}
rcu_read_unlock();
}
/**
* irdma_add_ip - add ip addresses
* @iwdev: irdma device
*
* Add ipv4/ipv6 addresses to the arp cache
*/
void irdma_add_ip(struct irdma_device *iwdev)
{
irdma_add_ipv4_addr(iwdev);
irdma_add_ipv6_addr(iwdev);
}
/**
* irdma_alloc_and_get_cqp_request - get cqp struct
* @cqp: device cqp ptr
* @wait: cqp to be used in wait mode
*/
struct irdma_cqp_request *irdma_alloc_and_get_cqp_request(struct irdma_cqp *cqp,
bool wait)
{
struct irdma_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_first_entry(&cqp->cqp_avail_reqs,
struct irdma_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;
if (wait)
init_waitqueue_head(&cqp_request->waitq);
}
}
if (!cqp_request) {
ibdev_dbg(to_ibdev(cqp->sc_cqp.dev), "ERR: CQP Request Fail: No Memory");
return NULL;
}
cqp_request->waiting = wait;
refcount_set(&cqp_request->refcnt, 1);
memset(&cqp_request->compl_info, 0, sizeof(cqp_request->compl_info));
return cqp_request;
}
/**
* irdma_get_cqp_request - increase refcount for cqp_request
* @cqp_request: pointer to cqp_request instance
*/
static inline void irdma_get_cqp_request(struct irdma_cqp_request *cqp_request)
{
refcount_inc(&cqp_request->refcnt);
}
/**
* irdma_free_cqp_request - free cqp request
* @cqp: cqp ptr
* @cqp_request: to be put back in cqp list
*/
void irdma_free_cqp_request(struct irdma_cqp *cqp,
struct irdma_cqp_request *cqp_request)
{
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(&cqp->remove_wq);
}
/**
* irdma_put_cqp_request - dec ref count and free if 0
* @cqp: cqp ptr
* @cqp_request: to be put back in cqp list
*/
void irdma_put_cqp_request(struct irdma_cqp *cqp,
struct irdma_cqp_request *cqp_request)
{
if (refcount_dec_and_test(&cqp_request->refcnt))
irdma_free_cqp_request(cqp, cqp_request);
}
/**
* irdma_free_pending_cqp_request -free pending cqp request objs
* @cqp: cqp ptr
* @cqp_request: to be put back in cqp list
*/
static void
irdma_free_pending_cqp_request(struct irdma_cqp *cqp,
struct irdma_cqp_request *cqp_request)
{
if (cqp_request->waiting) {
cqp_request->compl_info.error = true;
cqp_request->request_done = true;
wake_up(&cqp_request->waitq);
}
wait_event_timeout(cqp->remove_wq,
refcount_read(&cqp_request->refcnt) == 1, 1000);
irdma_put_cqp_request(cqp, cqp_request);
}
/**
* irdma_cleanup_pending_cqp_op - clean-up cqp with no
* completions
* @rf: RDMA PCI function
*/
void irdma_cleanup_pending_cqp_op(struct irdma_pci_f *rf)
{
struct irdma_sc_dev *dev = &rf->sc_dev;
struct irdma_cqp *cqp = &rf->cqp;
struct irdma_cqp_request *cqp_request = NULL;
struct cqp_cmds_info *pcmdinfo = NULL;
u32 i, pending_work, wqe_idx;
pending_work = IRDMA_RING_USED_QUANTA(cqp->sc_cqp.sq_ring);
wqe_idx = IRDMA_RING_CURRENT_TAIL(cqp->sc_cqp.sq_ring);
for (i = 0; i < pending_work; i++) {
cqp_request = (struct irdma_cqp_request *)(unsigned long)
cqp->scratch_array[wqe_idx];
if (cqp_request)
irdma_free_pending_cqp_request(cqp, cqp_request);
wqe_idx = (wqe_idx + 1) % IRDMA_RING_SIZE(cqp->sc_cqp.sq_ring);
}
while (!list_empty(&dev->cqp_cmd_head)) {
pcmdinfo = irdma_remove_cqp_head(dev);
cqp_request =
container_of(pcmdinfo, struct irdma_cqp_request, info);
if (cqp_request)
irdma_free_pending_cqp_request(cqp, cqp_request);
}
}
/**
* irdma_wait_event - wait for completion
* @rf: RDMA PCI function
* @cqp_request: cqp request to wait
*/
static int irdma_wait_event(struct irdma_pci_f *rf,
struct irdma_cqp_request *cqp_request)
{
struct irdma_cqp_timeout cqp_timeout = {};
bool cqp_error = false;
int err_code = 0;
cqp_timeout.compl_cqp_cmds = rf->sc_dev.cqp_cmd_stats[IRDMA_OP_CMPL_CMDS];
do {
irdma_cqp_ce_handler(rf, &rf->ccq.sc_cq);
if (wait_event_timeout(cqp_request->waitq,
cqp_request->request_done,
msecs_to_jiffies(CQP_COMPL_WAIT_TIME_MS)))
break;
irdma_check_cqp_progress(&cqp_timeout, &rf->sc_dev);
if (cqp_timeout.count < CQP_TIMEOUT_THRESHOLD)
continue;
if (!rf->reset) {
rf->reset = true;
rf->gen_ops.request_reset(rf);
}
return -ETIMEDOUT;
} while (1);
cqp_error = cqp_request->compl_info.error;
if (cqp_error) {
err_code = -EIO;
if (cqp_request->compl_info.maj_err_code == 0xFFFF) {
if (cqp_request->compl_info.min_err_code == 0x8002)
err_code = -EBUSY;
else if (cqp_request->compl_info.min_err_code == 0x8029) {
if (!rf->reset) {
rf->reset = true;
rf->gen_ops.request_reset(rf);
}
}
}
}
return err_code;
}
static const char *const irdma_cqp_cmd_names[IRDMA_MAX_CQP_OPS] = {
[IRDMA_OP_CEQ_DESTROY] = "Destroy CEQ Cmd",
[IRDMA_OP_AEQ_DESTROY] = "Destroy AEQ Cmd",
[IRDMA_OP_DELETE_ARP_CACHE_ENTRY] = "Delete ARP Cache Cmd",
[IRDMA_OP_MANAGE_APBVT_ENTRY] = "Manage APBV Table Entry Cmd",
[IRDMA_OP_CEQ_CREATE] = "CEQ Create Cmd",
[IRDMA_OP_AEQ_CREATE] = "AEQ Destroy Cmd",
[IRDMA_OP_MANAGE_QHASH_TABLE_ENTRY] = "Manage Quad Hash Table Entry Cmd",
[IRDMA_OP_QP_MODIFY] = "Modify QP Cmd",
[IRDMA_OP_QP_UPLOAD_CONTEXT] = "Upload Context Cmd",
[IRDMA_OP_CQ_CREATE] = "Create CQ Cmd",
[IRDMA_OP_CQ_DESTROY] = "Destroy CQ Cmd",
[IRDMA_OP_QP_CREATE] = "Create QP Cmd",
[IRDMA_OP_QP_DESTROY] = "Destroy QP Cmd",
[IRDMA_OP_ALLOC_STAG] = "Allocate STag Cmd",
[IRDMA_OP_MR_REG_NON_SHARED] = "Register Non-Shared MR Cmd",
[IRDMA_OP_DEALLOC_STAG] = "Deallocate STag Cmd",
[IRDMA_OP_MW_ALLOC] = "Allocate Memory Window Cmd",
[IRDMA_OP_QP_FLUSH_WQES] = "Flush QP Cmd",
[IRDMA_OP_ADD_ARP_CACHE_ENTRY] = "Add ARP Cache Cmd",
[IRDMA_OP_MANAGE_PUSH_PAGE] = "Manage Push Page Cmd",
[IRDMA_OP_UPDATE_PE_SDS] = "Update PE SDs Cmd",
[IRDMA_OP_MANAGE_HMC_PM_FUNC_TABLE] = "Manage HMC PM Function Table Cmd",
[IRDMA_OP_SUSPEND] = "Suspend QP Cmd",
[IRDMA_OP_RESUME] = "Resume QP Cmd",
[IRDMA_OP_MANAGE_VF_PBLE_BP] = "Manage VF PBLE Backing Pages Cmd",
[IRDMA_OP_QUERY_FPM_VAL] = "Query FPM Values Cmd",
[IRDMA_OP_COMMIT_FPM_VAL] = "Commit FPM Values Cmd",
[IRDMA_OP_AH_CREATE] = "Create Address Handle Cmd",
[IRDMA_OP_AH_MODIFY] = "Modify Address Handle Cmd",
[IRDMA_OP_AH_DESTROY] = "Destroy Address Handle Cmd",
[IRDMA_OP_MC_CREATE] = "Create Multicast Group Cmd",
[IRDMA_OP_MC_DESTROY] = "Destroy Multicast Group Cmd",
[IRDMA_OP_MC_MODIFY] = "Modify Multicast Group Cmd",
[IRDMA_OP_STATS_ALLOCATE] = "Add Statistics Instance Cmd",
[IRDMA_OP_STATS_FREE] = "Free Statistics Instance Cmd",
[IRDMA_OP_STATS_GATHER] = "Gather Statistics Cmd",
[IRDMA_OP_WS_ADD_NODE] = "Add Work Scheduler Node Cmd",
[IRDMA_OP_WS_MODIFY_NODE] = "Modify Work Scheduler Node Cmd",
[IRDMA_OP_WS_DELETE_NODE] = "Delete Work Scheduler Node Cmd",
[IRDMA_OP_SET_UP_MAP] = "Set UP-UP Mapping Cmd",
[IRDMA_OP_GEN_AE] = "Generate AE Cmd",
[IRDMA_OP_QUERY_RDMA_FEATURES] = "RDMA Get Features Cmd",
[IRDMA_OP_ALLOC_LOCAL_MAC_ENTRY] = "Allocate Local MAC Entry Cmd",
[IRDMA_OP_ADD_LOCAL_MAC_ENTRY] = "Add Local MAC Entry Cmd",
[IRDMA_OP_DELETE_LOCAL_MAC_ENTRY] = "Delete Local MAC Entry Cmd",
[IRDMA_OP_CQ_MODIFY] = "CQ Modify Cmd",
};
static const struct irdma_cqp_err_info irdma_noncrit_err_list[] = {
{0xffff, 0x8002, "Invalid State"},
{0xffff, 0x8006, "Flush No Wqe Pending"},
{0xffff, 0x8007, "Modify QP Bad Close"},
{0xffff, 0x8009, "LLP Closed"},
{0xffff, 0x800a, "Reset Not Sent"}
};
/**
* irdma_cqp_crit_err - check if CQP error is critical
* @dev: pointer to dev structure
* @cqp_cmd: code for last CQP operation
* @maj_err_code: major error code
* @min_err_code: minot error code
*/
bool irdma_cqp_crit_err(struct irdma_sc_dev *dev, u8 cqp_cmd,
u16 maj_err_code, u16 min_err_code)
{
int i;
for (i = 0; i < ARRAY_SIZE(irdma_noncrit_err_list); ++i) {
if (maj_err_code == irdma_noncrit_err_list[i].maj &&
min_err_code == irdma_noncrit_err_list[i].min) {
ibdev_dbg(to_ibdev(dev),
"CQP: [%s Error][%s] maj=0x%x min=0x%x\n",
irdma_noncrit_err_list[i].desc,
irdma_cqp_cmd_names[cqp_cmd], maj_err_code,
min_err_code);
return false;
}
}
return true;
}
/**
* irdma_handle_cqp_op - process cqp command
* @rf: RDMA PCI function
* @cqp_request: cqp request to process
*/
int irdma_handle_cqp_op(struct irdma_pci_f *rf,
struct irdma_cqp_request *cqp_request)
{
struct irdma_sc_dev *dev = &rf->sc_dev;
struct cqp_cmds_info *info = &cqp_request->info;
int status;
bool put_cqp_request = true;
if (rf->reset)
return -EBUSY;
irdma_get_cqp_request(cqp_request);
status = irdma_process_cqp_cmd(dev, info);
if (status)
goto err;
if (cqp_request->waiting) {
put_cqp_request = false;
status = irdma_wait_event(rf, cqp_request);
if (status)
goto err;
}
return 0;
err:
if (irdma_cqp_crit_err(dev, info->cqp_cmd,
cqp_request->compl_info.maj_err_code,
cqp_request->compl_info.min_err_code))
ibdev_err(&rf->iwdev->ibdev,
"[%s Error][op_code=%d] status=%d waiting=%d completion_err=%d maj=0x%x min=0x%x\n",
irdma_cqp_cmd_names[info->cqp_cmd], info->cqp_cmd, status, cqp_request->waiting,
cqp_request->compl_info.error, cqp_request->compl_info.maj_err_code,
cqp_request->compl_info.min_err_code);
if (put_cqp_request)
irdma_put_cqp_request(&rf->cqp, cqp_request);
return status;
}
void irdma_qp_add_ref(struct ib_qp *ibqp)
{
struct irdma_qp *iwqp = (struct irdma_qp *)ibqp;
refcount_inc(&iwqp->refcnt);
}
void irdma_qp_rem_ref(struct ib_qp *ibqp)
{
struct irdma_qp *iwqp = to_iwqp(ibqp);
struct irdma_device *iwdev = iwqp->iwdev;
u32 qp_num;
unsigned long flags;
spin_lock_irqsave(&iwdev->rf->qptable_lock, flags);
if (!refcount_dec_and_test(&iwqp->refcnt)) {
spin_unlock_irqrestore(&iwdev->rf->qptable_lock, flags);
return;
}
qp_num = iwqp->ibqp.qp_num;
iwdev->rf->qp_table[qp_num] = NULL;
spin_unlock_irqrestore(&iwdev->rf->qptable_lock, flags);
complete(&iwqp->free_qp);
}
struct ib_device *to_ibdev(struct irdma_sc_dev *dev)
{
return &(container_of(dev, struct irdma_pci_f, sc_dev))->iwdev->ibdev;
}
/**
* irdma_get_qp - get qp address
* @device: iwarp device
* @qpn: qp number
*/
struct ib_qp *irdma_get_qp(struct ib_device *device, int qpn)
{
struct irdma_device *iwdev = to_iwdev(device);
if (qpn < IW_FIRST_QPN || qpn >= iwdev->rf->max_qp)
return NULL;
return &iwdev->rf->qp_table[qpn]->ibqp;
}
/**
* irdma_remove_cqp_head - return head entry and remove
* @dev: device
*/
void *irdma_remove_cqp_head(struct irdma_sc_dev *dev)
{
struct list_head *entry;
struct list_head *list = &dev->cqp_cmd_head;
if (list_empty(list))
return NULL;
entry = list->next;
list_del(entry);
return entry;
}
/**
* irdma_cqp_sds_cmd - create cqp command for sd
* @dev: hardware control device structure
* @sdinfo: information for sd cqp
*
*/
int irdma_cqp_sds_cmd(struct irdma_sc_dev *dev,
struct irdma_update_sds_info *sdinfo)
{
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
struct irdma_pci_f *rf = dev_to_rf(dev);
int status;
cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
if (!cqp_request)
return -ENOMEM;
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 = IRDMA_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 = irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(&rf->cqp, cqp_request);
return status;
}
/**
* irdma_cqp_qp_suspend_resume - cqp command for suspend/resume
* @qp: hardware control qp
* @op: suspend or resume
*/
int irdma_cqp_qp_suspend_resume(struct irdma_sc_qp *qp, u8 op)
{
struct irdma_sc_dev *dev = qp->dev;
struct irdma_cqp_request *cqp_request;
struct irdma_sc_cqp *cqp = dev->cqp;
struct cqp_cmds_info *cqp_info;
struct irdma_pci_f *rf = dev_to_rf(dev);
int status;
cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, false);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = op;
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 = irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(&rf->cqp, cqp_request);
return status;
}
/**
* irdma_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 irdma_term_modify_qp(struct irdma_sc_qp *qp, u8 next_state, u8 term,
u8 term_len)
{
struct irdma_qp *iwqp;
iwqp = qp->qp_uk.back_qp;
irdma_next_iw_state(iwqp, next_state, 0, term, term_len);
};
/**
* irdma_terminate_done - after terminate is completed
* @qp: hardware control qp
* @timeout_occurred: indicates if terminate timer expired
*/
void irdma_terminate_done(struct irdma_sc_qp *qp, int timeout_occurred)
{
struct irdma_qp *iwqp;
u8 hte = 0;
bool first_time;
unsigned long flags;
iwqp = qp->qp_uk.back_qp;
spin_lock_irqsave(&iwqp->lock, flags);
if (iwqp->hte_added) {
iwqp->hte_added = 0;
hte = 1;
}
first_time = !(qp->term_flags & IRDMA_TERM_DONE);
qp->term_flags |= IRDMA_TERM_DONE;
spin_unlock_irqrestore(&iwqp->lock, flags);
if (first_time) {
if (!timeout_occurred)
irdma_terminate_del_timer(qp);
irdma_next_iw_state(iwqp, IRDMA_QP_STATE_ERROR, hte, 0, 0);
irdma_cm_disconn(iwqp);
}
}
static void irdma_terminate_timeout(struct timer_list *t)
{
struct irdma_qp *iwqp = from_timer(iwqp, t, terminate_timer);
struct irdma_sc_qp *qp = &iwqp->sc_qp;
irdma_terminate_done(qp, 1);
irdma_qp_rem_ref(&iwqp->ibqp);
}
/**
* irdma_terminate_start_timer - start terminate timeout
* @qp: hardware control qp
*/
void irdma_terminate_start_timer(struct irdma_sc_qp *qp)
{
struct irdma_qp *iwqp;
iwqp = qp->qp_uk.back_qp;
irdma_qp_add_ref(&iwqp->ibqp);
timer_setup(&iwqp->terminate_timer, irdma_terminate_timeout, 0);
iwqp->terminate_timer.expires = jiffies + HZ;
add_timer(&iwqp->terminate_timer);
}
/**
* irdma_terminate_del_timer - delete terminate timeout
* @qp: hardware control qp
*/
void irdma_terminate_del_timer(struct irdma_sc_qp *qp)
{
struct irdma_qp *iwqp;
int ret;
iwqp = qp->qp_uk.back_qp;
ret = del_timer(&iwqp->terminate_timer);
if (ret)
irdma_qp_rem_ref(&iwqp->ibqp);
}
/**
* irdma_cqp_query_fpm_val_cmd - send cqp command for fpm
* @dev: function device struct
* @val_mem: buffer for fpm
* @hmc_fn_id: function id for fpm
*/
int irdma_cqp_query_fpm_val_cmd(struct irdma_sc_dev *dev,
struct irdma_dma_mem *val_mem, u8 hmc_fn_id)
{
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
struct irdma_pci_f *rf = dev_to_rf(dev);
int status;
cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
cqp_request->param = NULL;
cqp_info->in.u.query_fpm_val.cqp = dev->cqp;
cqp_info->in.u.query_fpm_val.fpm_val_pa = val_mem->pa;
cqp_info->in.u.query_fpm_val.fpm_val_va = val_mem->va;
cqp_info->in.u.query_fpm_val.hmc_fn_id = hmc_fn_id;
cqp_info->cqp_cmd = IRDMA_OP_QUERY_FPM_VAL;
cqp_info->post_sq = 1;
cqp_info->in.u.query_fpm_val.scratch = (uintptr_t)cqp_request;
status = irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(&rf->cqp, cqp_request);
return status;
}
/**
* irdma_cqp_commit_fpm_val_cmd - commit fpm values in hw
* @dev: hardware control device structure
* @val_mem: buffer with fpm values
* @hmc_fn_id: function id for fpm
*/
int irdma_cqp_commit_fpm_val_cmd(struct irdma_sc_dev *dev,
struct irdma_dma_mem *val_mem, u8 hmc_fn_id)
{
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
struct irdma_pci_f *rf = dev_to_rf(dev);
int status;
cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
cqp_request->param = NULL;
cqp_info->in.u.commit_fpm_val.cqp = dev->cqp;
cqp_info->in.u.commit_fpm_val.fpm_val_pa = val_mem->pa;
cqp_info->in.u.commit_fpm_val.fpm_val_va = val_mem->va;
cqp_info->in.u.commit_fpm_val.hmc_fn_id = hmc_fn_id;
cqp_info->cqp_cmd = IRDMA_OP_COMMIT_FPM_VAL;
cqp_info->post_sq = 1;
cqp_info->in.u.commit_fpm_val.scratch = (uintptr_t)cqp_request;
status = irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(&rf->cqp, cqp_request);
return status;
}
/**
* irdma_cqp_cq_create_cmd - create a cq for the cqp
* @dev: device pointer
* @cq: pointer to created cq
*/
int irdma_cqp_cq_create_cmd(struct irdma_sc_dev *dev, struct irdma_sc_cq *cq)
{
struct irdma_pci_f *rf = dev_to_rf(dev);
struct irdma_cqp *iwcqp = &rf->cqp;
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
int status;
cqp_request = irdma_alloc_and_get_cqp_request(iwcqp, true);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = IRDMA_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 = irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(iwcqp, cqp_request);
return status;
}
/**
* irdma_cqp_qp_create_cmd - create a qp for the cqp
* @dev: device pointer
* @qp: pointer to created qp
*/
int irdma_cqp_qp_create_cmd(struct irdma_sc_dev *dev, struct irdma_sc_qp *qp)
{
struct irdma_pci_f *rf = dev_to_rf(dev);
struct irdma_cqp *iwcqp = &rf->cqp;
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
struct irdma_create_qp_info *qp_info;
int status;
cqp_request = irdma_alloc_and_get_cqp_request(iwcqp, true);
if (!cqp_request)
return -ENOMEM;
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 = IRDMA_QP_STATE_RTS;
cqp_info->cqp_cmd = IRDMA_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 = irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(iwcqp, cqp_request);
return status;
}
/**
* irdma_dealloc_push_page - free a push page for qp
* @rf: RDMA PCI function
* @qp: hardware control qp
*/
static void irdma_dealloc_push_page(struct irdma_pci_f *rf,
struct irdma_sc_qp *qp)
{
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
int status;
if (qp->push_idx == IRDMA_INVALID_PUSH_PAGE_INDEX)
return;
cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, false);
if (!cqp_request)
return;
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = IRDMA_OP_MANAGE_PUSH_PAGE;
cqp_info->post_sq = 1;
cqp_info->in.u.manage_push_page.info.push_idx = qp->push_idx;
cqp_info->in.u.manage_push_page.info.qs_handle = qp->qs_handle;
cqp_info->in.u.manage_push_page.info.free_page = 1;
cqp_info->in.u.manage_push_page.info.push_page_type = 0;
cqp_info->in.u.manage_push_page.cqp = &rf->cqp.sc_cqp;
cqp_info->in.u.manage_push_page.scratch = (uintptr_t)cqp_request;
status = irdma_handle_cqp_op(rf, cqp_request);
if (!status)
qp->push_idx = IRDMA_INVALID_PUSH_PAGE_INDEX;
irdma_put_cqp_request(&rf->cqp, cqp_request);
}
/**
* irdma_free_qp_rsrc - free up memory resources for qp
* @iwqp: qp ptr (user or kernel)
*/
void irdma_free_qp_rsrc(struct irdma_qp *iwqp)
{
struct irdma_device *iwdev = iwqp->iwdev;
struct irdma_pci_f *rf = iwdev->rf;
u32 qp_num = iwqp->ibqp.qp_num;
irdma_ieq_cleanup_qp(iwdev->vsi.ieq, &iwqp->sc_qp);
irdma_dealloc_push_page(rf, &iwqp->sc_qp);
if (iwqp->sc_qp.vsi) {
irdma_qp_rem_qos(&iwqp->sc_qp);
iwqp->sc_qp.dev->ws_remove(iwqp->sc_qp.vsi,
iwqp->sc_qp.user_pri);
}
if (qp_num > 2)
irdma_free_rsrc(rf, rf->allocated_qps, qp_num);
dma_free_coherent(rf->sc_dev.hw->device, iwqp->q2_ctx_mem.size,
iwqp->q2_ctx_mem.va, iwqp->q2_ctx_mem.pa);
iwqp->q2_ctx_mem.va = NULL;
dma_free_coherent(rf->sc_dev.hw->device, iwqp->kqp.dma_mem.size,
iwqp->kqp.dma_mem.va, iwqp->kqp.dma_mem.pa);
iwqp->kqp.dma_mem.va = NULL;
kfree(iwqp->kqp.sq_wrid_mem);
kfree(iwqp->kqp.rq_wrid_mem);
}
/**
* irdma_cq_wq_destroy - send cq destroy cqp
* @rf: RDMA PCI function
* @cq: hardware control cq
*/
void irdma_cq_wq_destroy(struct irdma_pci_f *rf, struct irdma_sc_cq *cq)
{
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
if (!cqp_request)
return;
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = IRDMA_OP_CQ_DESTROY;
cqp_info->post_sq = 1;
cqp_info->in.u.cq_destroy.cq = cq;
cqp_info->in.u.cq_destroy.scratch = (uintptr_t)cqp_request;
irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(&rf->cqp, cqp_request);
}
/**
* irdma_hw_modify_qp_callback - handle state for modifyQPs that don't wait
* @cqp_request: modify QP completion
*/
static void irdma_hw_modify_qp_callback(struct irdma_cqp_request *cqp_request)
{
struct cqp_cmds_info *cqp_info;
struct irdma_qp *iwqp;
cqp_info = &cqp_request->info;
iwqp = cqp_info->in.u.qp_modify.qp->qp_uk.back_qp;
atomic_dec(&iwqp->hw_mod_qp_pend);
wake_up(&iwqp->mod_qp_waitq);
}
/**
* irdma_hw_modify_qp - setup cqp for modify qp
* @iwdev: RDMA device
* @iwqp: qp ptr (user or kernel)
* @info: info for modify qp
* @wait: flag to wait or not for modify qp completion
*/
int irdma_hw_modify_qp(struct irdma_device *iwdev, struct irdma_qp *iwqp,
struct irdma_modify_qp_info *info, bool wait)
{
int status;
struct irdma_pci_f *rf = iwdev->rf;
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
struct irdma_modify_qp_info *m_info;
cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, wait);
if (!cqp_request)
return -ENOMEM;
if (!wait) {
cqp_request->callback_fcn = irdma_hw_modify_qp_callback;
atomic_inc(&iwqp->hw_mod_qp_pend);
}
cqp_info = &cqp_request->info;
m_info = &cqp_info->in.u.qp_modify.info;
memcpy(m_info, info, sizeof(*m_info));
cqp_info->cqp_cmd = IRDMA_OP_QP_MODIFY;
cqp_info->post_sq = 1;
cqp_info->in.u.qp_modify.qp = &iwqp->sc_qp;
cqp_info->in.u.qp_modify.scratch = (uintptr_t)cqp_request;
status = irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(&rf->cqp, cqp_request);
if (status) {
if (rdma_protocol_roce(&iwdev->ibdev, 1))
return status;
switch (m_info->next_iwarp_state) {
struct irdma_gen_ae_info ae_info;
case IRDMA_QP_STATE_RTS:
case IRDMA_QP_STATE_IDLE:
case IRDMA_QP_STATE_TERMINATE:
case IRDMA_QP_STATE_CLOSING:
if (info->curr_iwarp_state == IRDMA_QP_STATE_IDLE)
irdma_send_reset(iwqp->cm_node);
else
iwqp->sc_qp.term_flags = IRDMA_TERM_DONE;
if (!wait) {
ae_info.ae_code = IRDMA_AE_BAD_CLOSE;
ae_info.ae_src = 0;
irdma_gen_ae(rf, &iwqp->sc_qp, &ae_info, false);
} else {
cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp,
wait);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
m_info = &cqp_info->in.u.qp_modify.info;
memcpy(m_info, info, sizeof(*m_info));
cqp_info->cqp_cmd = IRDMA_OP_QP_MODIFY;
cqp_info->post_sq = 1;
cqp_info->in.u.qp_modify.qp = &iwqp->sc_qp;
cqp_info->in.u.qp_modify.scratch = (uintptr_t)cqp_request;
m_info->next_iwarp_state = IRDMA_QP_STATE_ERROR;
m_info->reset_tcp_conn = true;
irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(&rf->cqp, cqp_request);
}
break;
case IRDMA_QP_STATE_ERROR:
default:
break;
}
}
return status;
}
/**
* irdma_cqp_cq_destroy_cmd - destroy the cqp cq
* @dev: device pointer
* @cq: pointer to cq
*/
void irdma_cqp_cq_destroy_cmd(struct irdma_sc_dev *dev, struct irdma_sc_cq *cq)
{
struct irdma_pci_f *rf = dev_to_rf(dev);
irdma_cq_wq_destroy(rf, cq);
}
/**
* irdma_cqp_qp_destroy_cmd - destroy the cqp
* @dev: device pointer
* @qp: pointer to qp
*/
int irdma_cqp_qp_destroy_cmd(struct irdma_sc_dev *dev, struct irdma_sc_qp *qp)
{
struct irdma_pci_f *rf = dev_to_rf(dev);
struct irdma_cqp *iwcqp = &rf->cqp;
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
int status;
cqp_request = irdma_alloc_and_get_cqp_request(iwcqp, true);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
memset(cqp_info, 0, sizeof(*cqp_info));
cqp_info->cqp_cmd = IRDMA_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 = irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(&rf->cqp, cqp_request);
return status;
}
/**
* irdma_ieq_mpa_crc_ae - generate AE for crc error
* @dev: hardware control device structure
* @qp: hardware control qp
*/
void irdma_ieq_mpa_crc_ae(struct irdma_sc_dev *dev, struct irdma_sc_qp *qp)
{
struct irdma_gen_ae_info info = {};
struct irdma_pci_f *rf = dev_to_rf(dev);
ibdev_dbg(&rf->iwdev->ibdev, "AEQ: Generate MPA CRC AE\n");
info.ae_code = IRDMA_AE_LLP_RECEIVED_MPA_CRC_ERROR;
info.ae_src = IRDMA_AE_SOURCE_RQ;
irdma_gen_ae(rf, qp, &info, false);
}
/**
* irdma_init_hash_desc - initialize hash for crc calculation
* @desc: cryption type
*/
int irdma_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 -EINVAL;
tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
GFP_KERNEL);
if (!tdesc) {
crypto_free_shash(tfm);
return -EINVAL;
}
tdesc->tfm = tfm;
*desc = tdesc;
return 0;
}
/**
* irdma_free_hash_desc - free hash desc
* @desc: to be freed
*/
void irdma_free_hash_desc(struct shash_desc *desc)
{
if (desc) {
crypto_free_shash(desc->tfm);
kfree(desc);
}
}
/**
* irdma_ieq_check_mpacrc - check if mpa crc is OK
* @desc: desc for hash
* @addr: address of buffer for crc
* @len: length of buffer
* @val: value to be compared
*/
int irdma_ieq_check_mpacrc(struct shash_desc *desc, void *addr, u32 len,
u32 val)
{
u32 crc = 0;
int ret;
int ret_code = 0;
crypto_shash_init(desc);
ret = crypto_shash_update(desc, addr, len);
if (!ret)
crypto_shash_final(desc, (u8 *)&crc);
if (crc != val)
ret_code = -EINVAL;
return ret_code;
}
/**
* irdma_ieq_get_qp - get qp based on quad in puda buffer
* @dev: hardware control device structure
* @buf: receive puda buffer on exception q
*/
struct irdma_sc_qp *irdma_ieq_get_qp(struct irdma_sc_dev *dev,
struct irdma_puda_buf *buf)
{
struct irdma_qp *iwqp;
struct irdma_cm_node *cm_node;
struct irdma_device *iwdev = buf->vsi->back_vsi;
u32 loc_addr[4] = {};
u32 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) {
loc_addr[0] = ntohl(iph->daddr);
rem_addr[0] = ntohl(iph->saddr);
} else {
ip6h = (struct ipv6hdr *)buf->iph;
irdma_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
irdma_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
}
loc_port = ntohs(tcph->dest);
rem_port = ntohs(tcph->source);
cm_node = irdma_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
loc_addr, buf->vlan_valid ? buf->vlan_id : 0xFFFF);
if (!cm_node)
return NULL;
iwqp = cm_node->iwqp;
irdma_rem_ref_cm_node(cm_node);
return &iwqp->sc_qp;
}
/**
* irdma_send_ieq_ack - ACKs for duplicate or OOO partials FPDUs
* @qp: qp ptr
*/
void irdma_send_ieq_ack(struct irdma_sc_qp *qp)
{
struct irdma_cm_node *cm_node = ((struct irdma_qp *)qp->qp_uk.back_qp)->cm_node;
struct irdma_puda_buf *buf = qp->pfpdu.lastrcv_buf;
struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
cm_node->tcp_cntxt.rcv_nxt = qp->pfpdu.nextseqnum;
cm_node->tcp_cntxt.loc_seq_num = ntohl(tcph->ack_seq);
irdma_send_ack(cm_node);
}
/**
* irdma_puda_ieq_get_ah_info - get AH info from IEQ buffer
* @qp: qp pointer
* @ah_info: AH info pointer
*/
void irdma_puda_ieq_get_ah_info(struct irdma_sc_qp *qp,
struct irdma_ah_info *ah_info)
{
struct irdma_puda_buf *buf = qp->pfpdu.ah_buf;
struct iphdr *iph;
struct ipv6hdr *ip6h;
memset(ah_info, 0, sizeof(*ah_info));
ah_info->do_lpbk = true;
ah_info->vlan_tag = buf->vlan_id;
ah_info->insert_vlan_tag = buf->vlan_valid;
ah_info->ipv4_valid = buf->ipv4;
ah_info->vsi = qp->vsi;
if (buf->smac_valid)
ether_addr_copy(ah_info->mac_addr, buf->smac);
if (buf->ipv4) {
ah_info->ipv4_valid = true;
iph = (struct iphdr *)buf->iph;
ah_info->hop_ttl = iph->ttl;
ah_info->tc_tos = iph->tos;
ah_info->dest_ip_addr[0] = ntohl(iph->daddr);
ah_info->src_ip_addr[0] = ntohl(iph->saddr);
} else {
ip6h = (struct ipv6hdr *)buf->iph;
ah_info->hop_ttl = ip6h->hop_limit;
ah_info->tc_tos = ip6h->priority;
irdma_copy_ip_ntohl(ah_info->dest_ip_addr,
ip6h->daddr.in6_u.u6_addr32);
irdma_copy_ip_ntohl(ah_info->src_ip_addr,
ip6h->saddr.in6_u.u6_addr32);
}
ah_info->dst_arpindex = irdma_arp_table(dev_to_rf(qp->dev),
ah_info->dest_ip_addr,
ah_info->ipv4_valid,
NULL, IRDMA_ARP_RESOLVE);
}
/**
* irdma_gen1_ieq_update_tcpip_info - update tcpip in the buffer
* @buf: puda to update
* @len: length of buffer
* @seqnum: seq number for tcp
*/
static void irdma_gen1_ieq_update_tcpip_info(struct irdma_puda_buf *buf,
u16 len, u32 seqnum)
{
struct tcphdr *tcph;
struct iphdr *iph;
u16 iphlen;
u16 pktsize;
u8 *addr = buf->mem.va;
iphlen = (buf->ipv4) ? 20 : 40;
iph = (struct iphdr *)(addr + buf->maclen);
tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
pktsize = len + buf->tcphlen + iphlen;
iph->tot_len = htons(pktsize);
tcph->seq = htonl(seqnum);
}
/**
* irdma_ieq_update_tcpip_info - update tcpip in the buffer
* @buf: puda to update
* @len: length of buffer
* @seqnum: seq number for tcp
*/
void irdma_ieq_update_tcpip_info(struct irdma_puda_buf *buf, u16 len,
u32 seqnum)
{
struct tcphdr *tcph;
u8 *addr;
if (buf->vsi->dev->hw_attrs.uk_attrs.hw_rev == IRDMA_GEN_1)
return irdma_gen1_ieq_update_tcpip_info(buf, len, seqnum);
addr = buf->mem.va;
tcph = (struct tcphdr *)addr;
tcph->seq = htonl(seqnum);
}
/**
* irdma_gen1_puda_get_tcpip_info - get tcpip info from puda
* buffer
* @info: to get information
* @buf: puda buffer
*/
static int irdma_gen1_puda_get_tcpip_info(struct irdma_puda_cmpl_info *info,
struct irdma_puda_buf *buf)
{
struct iphdr *iph;
struct ipv6hdr *ip6h;
struct tcphdr *tcph;
u16 iphlen;
u16 pkt_len;
u8 *mem = buf->mem.va;
struct ethhdr *ethh = 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) {
ibdev_dbg(to_ibdev(buf->vsi->dev),
"ERR: payload_len = 0x%x totallen expected0x%x\n",
info->payload_len, buf->totallen);
return -EINVAL;
}
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;
}
/**
* irdma_puda_get_tcpip_info - get tcpip info from puda buffer
* @info: to get information
* @buf: puda buffer
*/
int irdma_puda_get_tcpip_info(struct irdma_puda_cmpl_info *info,
struct irdma_puda_buf *buf)
{
struct tcphdr *tcph;
u32 pkt_len;
u8 *mem;
if (buf->vsi->dev->hw_attrs.uk_attrs.hw_rev == IRDMA_GEN_1)
return irdma_gen1_puda_get_tcpip_info(info, buf);
mem = buf->mem.va;
buf->vlan_valid = info->vlan_valid;
if (info->vlan_valid)
buf->vlan_id = info->vlan;
buf->ipv4 = info->ipv4;
if (buf->ipv4)
buf->iph = mem + IRDMA_IPV4_PAD;
else
buf->iph = mem;
buf->tcph = mem + IRDMA_TCP_OFFSET;
tcph = (struct tcphdr *)buf->tcph;
pkt_len = info->payload_len;
buf->totallen = pkt_len;
buf->tcphlen = tcph->doff << 2;
buf->datalen = pkt_len - IRDMA_TCP_OFFSET - buf->tcphlen;
buf->data = buf->datalen ? buf->tcph + buf->tcphlen : NULL;
buf->hdrlen = IRDMA_TCP_OFFSET + buf->tcphlen;
buf->seqnum = ntohl(tcph->seq);
if (info->smac_valid) {
ether_addr_copy(buf->smac, info->smac);
buf->smac_valid = true;
}
return 0;
}
/**
* irdma_hw_stats_timeout - Stats timer-handler which updates all HW stats
* @t: timer_list pointer
*/
static void irdma_hw_stats_timeout(struct timer_list *t)
{
struct irdma_vsi_pestat *pf_devstat =
from_timer(pf_devstat, t, stats_timer);
struct irdma_sc_vsi *sc_vsi = pf_devstat->vsi;
if (sc_vsi->dev->hw_attrs.uk_attrs.hw_rev >= IRDMA_GEN_2)
irdma_cqp_gather_stats_cmd(sc_vsi->dev, sc_vsi->pestat, false);
else
irdma_cqp_gather_stats_gen1(sc_vsi->dev, sc_vsi->pestat);
mod_timer(&pf_devstat->stats_timer,
jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
}
/**
* irdma_hw_stats_start_timer - Start periodic stats timer
* @vsi: vsi structure pointer
*/
void irdma_hw_stats_start_timer(struct irdma_sc_vsi *vsi)
{
struct irdma_vsi_pestat *devstat = vsi->pestat;
timer_setup(&devstat->stats_timer, irdma_hw_stats_timeout, 0);
mod_timer(&devstat->stats_timer,
jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
}
/**
* irdma_hw_stats_stop_timer - Delete periodic stats timer
* @vsi: pointer to vsi structure
*/
void irdma_hw_stats_stop_timer(struct irdma_sc_vsi *vsi)
{
struct irdma_vsi_pestat *devstat = vsi->pestat;
del_timer_sync(&devstat->stats_timer);
}
/**
* irdma_process_stats - Checking for wrap and update stats
* @pestat: stats structure pointer
*/
static inline void irdma_process_stats(struct irdma_vsi_pestat *pestat)
{
sc_vsi_update_stats(pestat->vsi);
}
/**
* irdma_cqp_gather_stats_gen1 - Gather stats
* @dev: pointer to device structure
* @pestat: statistics structure
*/
void irdma_cqp_gather_stats_gen1(struct irdma_sc_dev *dev,
struct irdma_vsi_pestat *pestat)
{
struct irdma_gather_stats *gather_stats =
pestat->gather_info.gather_stats_va;
const struct irdma_hw_stat_map *map = dev->hw_stats_map;
u16 max_stats_idx = dev->hw_attrs.max_stat_idx;
u32 stats_inst_offset_32;
u32 stats_inst_offset_64;
u64 new_val;
u16 i;
stats_inst_offset_32 = (pestat->gather_info.use_stats_inst) ?
pestat->gather_info.stats_inst_index :
pestat->hw->hmc.hmc_fn_id;
stats_inst_offset_32 *= 4;
stats_inst_offset_64 = stats_inst_offset_32 * 2;
for (i = 0; i < max_stats_idx; i++) {
if (map[i].bitmask <= IRDMA_MAX_STATS_32)
new_val = rd32(dev->hw,
dev->hw_stats_regs[i] + stats_inst_offset_32);
else
new_val = rd64(dev->hw,
dev->hw_stats_regs[i] + stats_inst_offset_64);
gather_stats->val[map[i].byteoff / sizeof(u64)] = new_val;
}
irdma_process_stats(pestat);
}
/**
* irdma_process_cqp_stats - Checking for wrap and update stats
* @cqp_request: cqp_request structure pointer
*/
static void irdma_process_cqp_stats(struct irdma_cqp_request *cqp_request)
{
struct irdma_vsi_pestat *pestat = cqp_request->param;
irdma_process_stats(pestat);
}
/**
* irdma_cqp_gather_stats_cmd - Gather stats
* @dev: pointer to device structure
* @pestat: pointer to stats info
* @wait: flag to wait or not wait for stats
*/
int irdma_cqp_gather_stats_cmd(struct irdma_sc_dev *dev,
struct irdma_vsi_pestat *pestat, bool wait)
{
struct irdma_pci_f *rf = dev_to_rf(dev);
struct irdma_cqp *iwcqp = &rf->cqp;
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
int status;
cqp_request = irdma_alloc_and_get_cqp_request(iwcqp, wait);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
memset(cqp_info, 0, sizeof(*cqp_info));
cqp_info->cqp_cmd = IRDMA_OP_STATS_GATHER;
cqp_info->post_sq = 1;
cqp_info->in.u.stats_gather.info = pestat->gather_info;
cqp_info->in.u.stats_gather.scratch = (uintptr_t)cqp_request;
cqp_info->in.u.stats_gather.cqp = &rf->cqp.sc_cqp;
cqp_request->param = pestat;
if (!wait)
cqp_request->callback_fcn = irdma_process_cqp_stats;
status = irdma_handle_cqp_op(rf, cqp_request);
if (wait)
irdma_process_stats(pestat);
irdma_put_cqp_request(&rf->cqp, cqp_request);
return status;
}
/**
* irdma_cqp_stats_inst_cmd - Allocate/free stats instance
* @vsi: pointer to vsi structure
* @cmd: command to allocate or free
* @stats_info: pointer to allocate stats info
*/
int irdma_cqp_stats_inst_cmd(struct irdma_sc_vsi *vsi, u8 cmd,
struct irdma_stats_inst_info *stats_info)
{
struct irdma_pci_f *rf = dev_to_rf(vsi->dev);
struct irdma_cqp *iwcqp = &rf->cqp;
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
int status;
bool wait = false;
if (cmd == IRDMA_OP_STATS_ALLOCATE)
wait = true;
cqp_request = irdma_alloc_and_get_cqp_request(iwcqp, wait);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
memset(cqp_info, 0, sizeof(*cqp_info));
cqp_info->cqp_cmd = cmd;
cqp_info->post_sq = 1;
cqp_info->in.u.stats_manage.info = *stats_info;
cqp_info->in.u.stats_manage.scratch = (uintptr_t)cqp_request;
cqp_info->in.u.stats_manage.cqp = &rf->cqp.sc_cqp;
status = irdma_handle_cqp_op(rf, cqp_request);
if (wait)
stats_info->stats_idx = cqp_request->compl_info.op_ret_val;
irdma_put_cqp_request(iwcqp, cqp_request);
return status;
}
/**
* irdma_cqp_ceq_cmd - Create/Destroy CEQ's after CEQ 0
* @dev: pointer to device info
* @sc_ceq: pointer to ceq structure
* @op: Create or Destroy
*/
int irdma_cqp_ceq_cmd(struct irdma_sc_dev *dev, struct irdma_sc_ceq *sc_ceq,
u8 op)
{
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
struct irdma_pci_f *rf = dev_to_rf(dev);
int status;
cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
cqp_info->post_sq = 1;
cqp_info->cqp_cmd = op;
cqp_info->in.u.ceq_create.ceq = sc_ceq;
cqp_info->in.u.ceq_create.scratch = (uintptr_t)cqp_request;
status = irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(&rf->cqp, cqp_request);
return status;
}
/**
* irdma_cqp_aeq_cmd - Create/Destroy AEQ
* @dev: pointer to device info
* @sc_aeq: pointer to aeq structure
* @op: Create or Destroy
*/
int irdma_cqp_aeq_cmd(struct irdma_sc_dev *dev, struct irdma_sc_aeq *sc_aeq,
u8 op)
{
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
struct irdma_pci_f *rf = dev_to_rf(dev);
int status;
cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, true);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
cqp_info->post_sq = 1;
cqp_info->cqp_cmd = op;
cqp_info->in.u.aeq_create.aeq = sc_aeq;
cqp_info->in.u.aeq_create.scratch = (uintptr_t)cqp_request;
status = irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(&rf->cqp, cqp_request);
return status;
}
/**
* irdma_cqp_ws_node_cmd - Add/modify/delete ws node
* @dev: pointer to device structure
* @cmd: Add, modify or delete
* @node_info: pointer to ws node info
*/
int irdma_cqp_ws_node_cmd(struct irdma_sc_dev *dev, u8 cmd,
struct irdma_ws_node_info *node_info)
{
struct irdma_pci_f *rf = dev_to_rf(dev);
struct irdma_cqp *iwcqp = &rf->cqp;
struct irdma_sc_cqp *cqp = &iwcqp->sc_cqp;
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
int status;
bool poll;
if (!rf->sc_dev.ceq_valid)
poll = true;
else
poll = false;
cqp_request = irdma_alloc_and_get_cqp_request(iwcqp, !poll);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
memset(cqp_info, 0, sizeof(*cqp_info));
cqp_info->cqp_cmd = cmd;
cqp_info->post_sq = 1;
cqp_info->in.u.ws_node.info = *node_info;
cqp_info->in.u.ws_node.cqp = cqp;
cqp_info->in.u.ws_node.scratch = (uintptr_t)cqp_request;
status = irdma_handle_cqp_op(rf, cqp_request);
if (status)
goto exit;
if (poll) {
struct irdma_ccq_cqe_info compl_info;
status = irdma_sc_poll_for_cqp_op_done(cqp, IRDMA_CQP_OP_WORK_SCHED_NODE,
&compl_info);
node_info->qs_handle = compl_info.op_ret_val;
ibdev_dbg(&rf->iwdev->ibdev, "DCB: opcode=%d, compl_info.retval=%d\n",
compl_info.op_code, compl_info.op_ret_val);
} else {
node_info->qs_handle = cqp_request->compl_info.op_ret_val;
}
exit:
irdma_put_cqp_request(&rf->cqp, cqp_request);
return status;
}
/**
* irdma_ah_cqp_op - perform an AH cqp operation
* @rf: RDMA PCI function
* @sc_ah: address handle
* @cmd: AH operation
* @wait: wait if true
* @callback_fcn: Callback function on CQP op completion
* @cb_param: parameter for callback function
*
* returns errno
*/
int irdma_ah_cqp_op(struct irdma_pci_f *rf, struct irdma_sc_ah *sc_ah, u8 cmd,
bool wait,
void (*callback_fcn)(struct irdma_cqp_request *),
void *cb_param)
{
struct irdma_cqp_request *cqp_request;
struct cqp_cmds_info *cqp_info;
int status;
if (cmd != IRDMA_OP_AH_CREATE && cmd != IRDMA_OP_AH_DESTROY)
return -EINVAL;
cqp_request = irdma_alloc_and_get_cqp_request(&rf->cqp, wait);
if (!cqp_request)
return -ENOMEM;
cqp_info = &cqp_request->info;
cqp_info->cqp_cmd = cmd;
cqp_info->post_sq = 1;
if (cmd == IRDMA_OP_AH_CREATE) {
cqp_info->in.u.ah_create.info = sc_ah->ah_info;
cqp_info->in.u.ah_create.scratch = (uintptr_t)cqp_request;
cqp_info->in.u.ah_create.cqp = &rf->cqp.sc_cqp;
} else if (cmd == IRDMA_OP_AH_DESTROY) {
cqp_info->in.u.ah_destroy.info = sc_ah->ah_info;
cqp_info->in.u.ah_destroy.scratch = (uintptr_t)cqp_request;
cqp_info->in.u.ah_destroy.cqp = &rf->cqp.sc_cqp;
}
if (!wait) {
cqp_request->callback_fcn = callback_fcn;
cqp_request->param = cb_param;
}
status = irdma_handle_cqp_op(rf, cqp_request);
irdma_put_cqp_request(&rf->cqp, cqp_request);
if (status)
return -ENOMEM;
if (wait)
sc_ah->ah_info.ah_valid = (cmd == IRDMA_OP_AH_CREATE);
return 0;
}
/**
* irdma_ieq_ah_cb - callback after creation of AH for IEQ
* @cqp_request: pointer to cqp_request of create AH
*/
static void irdma_ieq_ah_cb(struct irdma_cqp_request *cqp_request)
{
struct irdma_sc_qp *qp = cqp_request->param;
struct irdma_sc_ah *sc_ah = qp->pfpdu.ah;
unsigned long flags;
spin_lock_irqsave(&qp->pfpdu.lock, flags);
if (!cqp_request->compl_info.op_ret_val) {
sc_ah->ah_info.ah_valid = true;
irdma_ieq_process_fpdus(qp, qp->vsi->ieq);
} else {
sc_ah->ah_info.ah_valid = false;
irdma_ieq_cleanup_qp(qp->vsi->ieq, qp);
}
spin_unlock_irqrestore(&qp->pfpdu.lock, flags);
}
/**
* irdma_ilq_ah_cb - callback after creation of AH for ILQ
* @cqp_request: pointer to cqp_request of create AH
*/
static void irdma_ilq_ah_cb(struct irdma_cqp_request *cqp_request)
{
struct irdma_cm_node *cm_node = cqp_request->param;
struct irdma_sc_ah *sc_ah = cm_node->ah;
sc_ah->ah_info.ah_valid = !cqp_request->compl_info.op_ret_val;
irdma_add_conn_est_qh(cm_node);
}
/**
* irdma_puda_create_ah - create AH for ILQ/IEQ qp's
* @dev: device pointer
* @ah_info: Address handle info
* @wait: When true will wait for operation to complete
* @type: ILQ/IEQ
* @cb_param: Callback param when not waiting
* @ah_ret: Returned pointer to address handle if created
*
*/
int irdma_puda_create_ah(struct irdma_sc_dev *dev,
struct irdma_ah_info *ah_info, bool wait,
enum puda_rsrc_type type, void *cb_param,
struct irdma_sc_ah **ah_ret)
{
struct irdma_sc_ah *ah;
struct irdma_pci_f *rf = dev_to_rf(dev);
int err;
ah = kzalloc(sizeof(*ah), GFP_ATOMIC);
*ah_ret = ah;
if (!ah)
return -ENOMEM;
err = irdma_alloc_rsrc(rf, rf->allocated_ahs, rf->max_ah,
&ah_info->ah_idx, &rf->next_ah);
if (err)
goto err_free;
ah->dev = dev;
ah->ah_info = *ah_info;
if (type == IRDMA_PUDA_RSRC_TYPE_ILQ)
err = irdma_ah_cqp_op(rf, ah, IRDMA_OP_AH_CREATE, wait,
irdma_ilq_ah_cb, cb_param);
else
err = irdma_ah_cqp_op(rf, ah, IRDMA_OP_AH_CREATE, wait,
irdma_ieq_ah_cb, cb_param);
if (err)
goto error;
return 0;
error:
irdma_free_rsrc(rf, rf->allocated_ahs, ah->ah_info.ah_idx);
err_free:
kfree(ah);
*ah_ret = NULL;
return -ENOMEM;
}
/**
* irdma_puda_free_ah - free a puda address handle
* @dev: device pointer
* @ah: The address handle to free
*/
void irdma_puda_free_ah(struct irdma_sc_dev *dev, struct irdma_sc_ah *ah)
{
struct irdma_pci_f *rf = dev_to_rf(dev);
if (!ah)
return;
if (ah->ah_info.ah_valid) {
irdma_ah_cqp_op(rf, ah, IRDMA_OP_AH_DESTROY, false, NULL, NULL);
irdma_free_rsrc(rf, rf->allocated_ahs, ah->ah_info.ah_idx);
}
kfree(ah);
}
/**
* irdma_gsi_ud_qp_ah_cb - callback after creation of AH for GSI/ID QP
* @cqp_request: pointer to cqp_request of create AH
*/
void irdma_gsi_ud_qp_ah_cb(struct irdma_cqp_request *cqp_request)
{
struct irdma_sc_ah *sc_ah = cqp_request->param;
if (!cqp_request->compl_info.op_ret_val)
sc_ah->ah_info.ah_valid = true;
else
sc_ah->ah_info.ah_valid = false;
}
/**
* irdma_prm_add_pble_mem - add moemory to pble resources
* @pprm: pble resource manager
* @pchunk: chunk of memory to add
*/
int irdma_prm_add_pble_mem(struct irdma_pble_prm *pprm,
struct irdma_chunk *pchunk)
{
u64 sizeofbitmap;
if (pchunk->size & 0xfff)
return -EINVAL;
sizeofbitmap = (u64)pchunk->size >> pprm->pble_shift;
pchunk->bitmapbuf = bitmap_zalloc(sizeofbitmap, GFP_KERNEL);
if (!pchunk->bitmapbuf)
return -ENOMEM;
pchunk->sizeofbitmap = sizeofbitmap;
/* each pble is 8 bytes hence shift by 3 */
pprm->total_pble_alloc += pchunk->size >> 3;
pprm->free_pble_cnt += pchunk->size >> 3;
return 0;
}
/**
* irdma_prm_get_pbles - get pble's from prm
* @pprm: pble resource manager
* @chunkinfo: nformation about chunk where pble's were acquired
* @mem_size: size of pble memory needed
* @vaddr: returns virtual address of pble memory
* @fpm_addr: returns fpm address of pble memory
*/
int irdma_prm_get_pbles(struct irdma_pble_prm *pprm,
struct irdma_pble_chunkinfo *chunkinfo, u64 mem_size,
u64 **vaddr, u64 *fpm_addr)
{
u64 bits_needed;
u64 bit_idx = PBLE_INVALID_IDX;
struct irdma_chunk *pchunk = NULL;
struct list_head *chunk_entry = pprm->clist.next;
u32 offset;
unsigned long flags;
*vaddr = NULL;
*fpm_addr = 0;
bits_needed = DIV_ROUND_UP_ULL(mem_size, BIT_ULL(pprm->pble_shift));
spin_lock_irqsave(&pprm->prm_lock, flags);
while (chunk_entry != &pprm->clist) {
pchunk = (struct irdma_chunk *)chunk_entry;
bit_idx = bitmap_find_next_zero_area(pchunk->bitmapbuf,
pchunk->sizeofbitmap, 0,
bits_needed, 0);
if (bit_idx < pchunk->sizeofbitmap)
break;
/* list.next used macro */
chunk_entry = pchunk->list.next;
}
if (!pchunk || bit_idx >= pchunk->sizeofbitmap) {
spin_unlock_irqrestore(&pprm->prm_lock, flags);
return -ENOMEM;
}
bitmap_set(pchunk->bitmapbuf, bit_idx, bits_needed);
offset = bit_idx << pprm->pble_shift;
*vaddr = pchunk->vaddr + offset;
*fpm_addr = pchunk->fpm_addr + offset;
chunkinfo->pchunk = pchunk;
chunkinfo->bit_idx = bit_idx;
chunkinfo->bits_used = bits_needed;
/* 3 is sizeof pble divide */
pprm->free_pble_cnt -= chunkinfo->bits_used << (pprm->pble_shift - 3);
spin_unlock_irqrestore(&pprm->prm_lock, flags);
return 0;
}
/**
* irdma_prm_return_pbles - return pbles back to prm
* @pprm: pble resource manager
* @chunkinfo: chunk where pble's were acquired and to be freed
*/
void irdma_prm_return_pbles(struct irdma_pble_prm *pprm,
struct irdma_pble_chunkinfo *chunkinfo)
{
unsigned long flags;
spin_lock_irqsave(&pprm->prm_lock, flags);
pprm->free_pble_cnt += chunkinfo->bits_used << (pprm->pble_shift - 3);
bitmap_clear(chunkinfo->pchunk->bitmapbuf, chunkinfo->bit_idx,
chunkinfo->bits_used);
spin_unlock_irqrestore(&pprm->prm_lock, flags);
}
int irdma_map_vm_page_list(struct irdma_hw *hw, void *va, dma_addr_t *pg_dma,
u32 pg_cnt)
{
struct page *vm_page;
int i;
u8 *addr;
addr = (u8 *)(uintptr_t)va;
for (i = 0; i < pg_cnt; i++) {
vm_page = vmalloc_to_page(addr);
if (!vm_page)
goto err;
pg_dma[i] = dma_map_page(hw->device, vm_page, 0, PAGE_SIZE,
DMA_BIDIRECTIONAL);
if (dma_mapping_error(hw->device, pg_dma[i]))
goto err;
addr += PAGE_SIZE;
}
return 0;
err:
irdma_unmap_vm_page_list(hw, pg_dma, i);
return -ENOMEM;
}
void irdma_unmap_vm_page_list(struct irdma_hw *hw, dma_addr_t *pg_dma, u32 pg_cnt)
{
int i;
for (i = 0; i < pg_cnt; i++)
dma_unmap_page(hw->device, pg_dma[i], PAGE_SIZE, DMA_BIDIRECTIONAL);
}
/**
* irdma_pble_free_paged_mem - free virtual paged memory
* @chunk: chunk to free with paged memory
*/
void irdma_pble_free_paged_mem(struct irdma_chunk *chunk)
{
if (!chunk->pg_cnt)
goto done;
irdma_unmap_vm_page_list(chunk->dev->hw, chunk->dmainfo.dmaaddrs,
chunk->pg_cnt);
done:
kfree(chunk->dmainfo.dmaaddrs);
chunk->dmainfo.dmaaddrs = NULL;
vfree(chunk->vaddr);
chunk->vaddr = NULL;
chunk->type = 0;
}
/**
* irdma_pble_get_paged_mem -allocate paged memory for pbles
* @chunk: chunk to add for paged memory
* @pg_cnt: number of pages needed
*/
int irdma_pble_get_paged_mem(struct irdma_chunk *chunk, u32 pg_cnt)
{
u32 size;
void *va;
chunk->dmainfo.dmaaddrs = kzalloc(pg_cnt << 3, GFP_KERNEL);
if (!chunk->dmainfo.dmaaddrs)
return -ENOMEM;
size = PAGE_SIZE * pg_cnt;
va = vmalloc(size);
if (!va)
goto err;
if (irdma_map_vm_page_list(chunk->dev->hw, va, chunk->dmainfo.dmaaddrs,
pg_cnt)) {
vfree(va);
goto err;
}
chunk->vaddr = va;
chunk->size = size;
chunk->pg_cnt = pg_cnt;
chunk->type = PBLE_SD_PAGED;
return 0;
err:
kfree(chunk->dmainfo.dmaaddrs);
chunk->dmainfo.dmaaddrs = NULL;
return -ENOMEM;
}
/**
* irdma_alloc_ws_node_id - Allocate a tx scheduler node ID
* @dev: device pointer
*/
u16 irdma_alloc_ws_node_id(struct irdma_sc_dev *dev)
{
struct irdma_pci_f *rf = dev_to_rf(dev);
u32 next = 1;
u32 node_id;
if (irdma_alloc_rsrc(rf, rf->allocated_ws_nodes, rf->max_ws_node_id,
&node_id, &next))
return IRDMA_WS_NODE_INVALID;
return (u16)node_id;
}
/**
* irdma_free_ws_node_id - Free a tx scheduler node ID
* @dev: device pointer
* @node_id: Work scheduler node ID
*/
void irdma_free_ws_node_id(struct irdma_sc_dev *dev, u16 node_id)
{
struct irdma_pci_f *rf = dev_to_rf(dev);
irdma_free_rsrc(rf, rf->allocated_ws_nodes, (u32)node_id);
}
/**
* irdma_modify_qp_to_err - Modify a QP to error
* @sc_qp: qp structure
*/
void irdma_modify_qp_to_err(struct irdma_sc_qp *sc_qp)
{
struct irdma_qp *qp = sc_qp->qp_uk.back_qp;
struct ib_qp_attr attr;
if (qp->iwdev->rf->reset)
return;
attr.qp_state = IB_QPS_ERR;
if (rdma_protocol_roce(qp->ibqp.device, 1))
irdma_modify_qp_roce(&qp->ibqp, &attr, IB_QP_STATE, NULL);
else
irdma_modify_qp(&qp->ibqp, &attr, IB_QP_STATE, NULL);
}
void irdma_ib_qp_event(struct irdma_qp *iwqp, enum irdma_qp_event_type event)
{
struct ib_event ibevent;
if (!iwqp->ibqp.event_handler)
return;
switch (event) {
case IRDMA_QP_EVENT_CATASTROPHIC:
ibevent.event = IB_EVENT_QP_FATAL;
break;
case IRDMA_QP_EVENT_ACCESS_ERR:
ibevent.event = IB_EVENT_QP_ACCESS_ERR;
break;
case IRDMA_QP_EVENT_REQ_ERR:
ibevent.event = IB_EVENT_QP_REQ_ERR;
break;
}
ibevent.device = iwqp->ibqp.device;
ibevent.element.qp = &iwqp->ibqp;
iwqp->ibqp.event_handler(&ibevent, iwqp->ibqp.qp_context);
}
bool irdma_cq_empty(struct irdma_cq *iwcq)
{
struct irdma_cq_uk *ukcq;
u64 qword3;
__le64 *cqe;
u8 polarity;
ukcq = &iwcq->sc_cq.cq_uk;
cqe = IRDMA_GET_CURRENT_CQ_ELEM(ukcq);
get_64bit_val(cqe, 24, &qword3);
polarity = (u8)FIELD_GET(IRDMA_CQ_VALID, qword3);
return polarity != ukcq->polarity;
}
void irdma_remove_cmpls_list(struct irdma_cq *iwcq)
{
struct irdma_cmpl_gen *cmpl_node;
struct list_head *tmp_node, *list_node;
list_for_each_safe (list_node, tmp_node, &iwcq->cmpl_generated) {
cmpl_node = list_entry(list_node, struct irdma_cmpl_gen, list);
list_del(&cmpl_node->list);
kfree(cmpl_node);
}
}
int irdma_generated_cmpls(struct irdma_cq *iwcq, struct irdma_cq_poll_info *cq_poll_info)
{
struct irdma_cmpl_gen *cmpl;
if (list_empty(&iwcq->cmpl_generated))
return -ENOENT;
cmpl = list_first_entry_or_null(&iwcq->cmpl_generated, struct irdma_cmpl_gen, list);
list_del(&cmpl->list);
memcpy(cq_poll_info, &cmpl->cpi, sizeof(*cq_poll_info));
kfree(cmpl);
ibdev_dbg(iwcq->ibcq.device,
"VERBS: %s: Poll artificially generated completion for QP 0x%X, op %u, wr_id=0x%llx\n",
__func__, cq_poll_info->qp_id, cq_poll_info->op_type,
cq_poll_info->wr_id);
return 0;
}
/**
* irdma_set_cpi_common_values - fill in values for polling info struct
* @cpi: resulting structure of cq_poll_info type
* @qp: QPair
* @qp_num: id of the QP
*/
static void irdma_set_cpi_common_values(struct irdma_cq_poll_info *cpi,
struct irdma_qp_uk *qp, u32 qp_num)
{
cpi->comp_status = IRDMA_COMPL_STATUS_FLUSHED;
cpi->error = true;
cpi->major_err = IRDMA_FLUSH_MAJOR_ERR;
cpi->minor_err = FLUSH_GENERAL_ERR;
cpi->qp_handle = (irdma_qp_handle)(uintptr_t)qp;
cpi->qp_id = qp_num;
}
static inline void irdma_comp_handler(struct irdma_cq *cq)
{
if (!cq->ibcq.comp_handler)
return;
if (atomic_cmpxchg(&cq->armed, 1, 0))
cq->ibcq.comp_handler(&cq->ibcq, cq->ibcq.cq_context);
}
void irdma_generate_flush_completions(struct irdma_qp *iwqp)
{
struct irdma_qp_uk *qp = &iwqp->sc_qp.qp_uk;
struct irdma_ring *sq_ring = &qp->sq_ring;
struct irdma_ring *rq_ring = &qp->rq_ring;
struct irdma_cmpl_gen *cmpl;
__le64 *sw_wqe;
u64 wqe_qword;
u32 wqe_idx;
bool compl_generated = false;
unsigned long flags1;
spin_lock_irqsave(&iwqp->iwscq->lock, flags1);
if (irdma_cq_empty(iwqp->iwscq)) {
unsigned long flags2;
spin_lock_irqsave(&iwqp->lock, flags2);
while (IRDMA_RING_MORE_WORK(*sq_ring)) {
cmpl = kzalloc(sizeof(*cmpl), GFP_ATOMIC);
if (!cmpl) {
spin_unlock_irqrestore(&iwqp->lock, flags2);
spin_unlock_irqrestore(&iwqp->iwscq->lock, flags1);
return;
}
wqe_idx = sq_ring->tail;
irdma_set_cpi_common_values(&cmpl->cpi, qp, qp->qp_id);
cmpl->cpi.wr_id = qp->sq_wrtrk_array[wqe_idx].wrid;
sw_wqe = qp->sq_base[wqe_idx].elem;
get_64bit_val(sw_wqe, 24, &wqe_qword);
cmpl->cpi.op_type = (u8)FIELD_GET(IRDMAQPSQ_OPCODE, IRDMAQPSQ_OPCODE);
cmpl->cpi.q_type = IRDMA_CQE_QTYPE_SQ;
/* remove the SQ WR by moving SQ tail*/
IRDMA_RING_SET_TAIL(*sq_ring,
sq_ring->tail + qp->sq_wrtrk_array[sq_ring->tail].quanta);
if (cmpl->cpi.op_type == IRDMAQP_OP_NOP) {
kfree(cmpl);
continue;
}
ibdev_dbg(iwqp->iwscq->ibcq.device,
"DEV: %s: adding wr_id = 0x%llx SQ Completion to list qp_id=%d\n",
__func__, cmpl->cpi.wr_id, qp->qp_id);
list_add_tail(&cmpl->list, &iwqp->iwscq->cmpl_generated);
compl_generated = true;
}
spin_unlock_irqrestore(&iwqp->lock, flags2);
spin_unlock_irqrestore(&iwqp->iwscq->lock, flags1);
if (compl_generated)
irdma_comp_handler(iwqp->iwscq);
} else {
spin_unlock_irqrestore(&iwqp->iwscq->lock, flags1);
mod_delayed_work(iwqp->iwdev->cleanup_wq, &iwqp->dwork_flush,
msecs_to_jiffies(IRDMA_FLUSH_DELAY_MS));
}
spin_lock_irqsave(&iwqp->iwrcq->lock, flags1);
if (irdma_cq_empty(iwqp->iwrcq)) {
unsigned long flags2;
spin_lock_irqsave(&iwqp->lock, flags2);
while (IRDMA_RING_MORE_WORK(*rq_ring)) {
cmpl = kzalloc(sizeof(*cmpl), GFP_ATOMIC);
if (!cmpl) {
spin_unlock_irqrestore(&iwqp->lock, flags2);
spin_unlock_irqrestore(&iwqp->iwrcq->lock, flags1);
return;
}
wqe_idx = rq_ring->tail;
irdma_set_cpi_common_values(&cmpl->cpi, qp, qp->qp_id);
cmpl->cpi.wr_id = qp->rq_wrid_array[wqe_idx];
cmpl->cpi.op_type = IRDMA_OP_TYPE_REC;
cmpl->cpi.q_type = IRDMA_CQE_QTYPE_RQ;
/* remove the RQ WR by moving RQ tail */
IRDMA_RING_SET_TAIL(*rq_ring, rq_ring->tail + 1);
ibdev_dbg(iwqp->iwrcq->ibcq.device,
"DEV: %s: adding wr_id = 0x%llx RQ Completion to list qp_id=%d, wqe_idx=%d\n",
__func__, cmpl->cpi.wr_id, qp->qp_id,
wqe_idx);
list_add_tail(&cmpl->list, &iwqp->iwrcq->cmpl_generated);
compl_generated = true;
}
spin_unlock_irqrestore(&iwqp->lock, flags2);
spin_unlock_irqrestore(&iwqp->iwrcq->lock, flags1);
if (compl_generated)
irdma_comp_handler(iwqp->iwrcq);
} else {
spin_unlock_irqrestore(&iwqp->iwrcq->lock, flags1);
mod_delayed_work(iwqp->iwdev->cleanup_wq, &iwqp->dwork_flush,
msecs_to_jiffies(IRDMA_FLUSH_DELAY_MS));
}
}