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qlcnic: Add support to process commands in atomic context 

o Commands from VF may sleep during PF-VF communication.
  Earlier we use to process qlcnic_sriov_vf_set_multi
  function in process context. Now individual commands
  that are called in atomic context are processed in
  process context without waiting for completion of
  command.

Signed-off-by: Rajesh Borundia <rajesh.borundia@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Rajesh Borundia 2014-05-09 02:51:30 -04:00 committed by David S. Miller
parent 132a3f2bee
commit 74b7ba1a8b
6 changed files with 99 additions and 107 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
View File

@ -1693,7 +1693,7 @@ int qlcnic_read_mac_addr(struct qlcnic_adapter *);
int qlcnic_setup_netdev(struct qlcnic_adapter *, struct net_device *, int);
void qlcnic_set_netdev_features(struct qlcnic_adapter *,
struct qlcnic_esw_func_cfg *);
void qlcnic_sriov_vf_schedule_multi(struct net_device *);
void qlcnic_sriov_vf_set_multi(struct net_device *);
int qlcnic_is_valid_nic_func(struct qlcnic_adapter *, u8);
int qlcnic_get_pci_func_type(struct qlcnic_adapter *, u16, u16 *, u16 *,
u16 *);

24
drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c
View File

@ -567,28 +567,14 @@ static void __qlcnic_set_multi(struct net_device *netdev, u16 vlan)
void qlcnic_set_multi(struct net_device *netdev)
{
struct qlcnic_adapter *adapter = netdev_priv(netdev);
struct qlcnic_mac_vlan_list *cur;
struct netdev_hw_addr *ha;
size_t temp;
if (!test_bit(__QLCNIC_FW_ATTACHED, &adapter->state))
return;
if (qlcnic_sriov_vf_check(adapter)) {
if (!netdev_mc_empty(netdev)) {
netdev_for_each_mc_addr(ha, netdev) {
temp = sizeof(struct qlcnic_mac_vlan_list);
cur = kzalloc(temp, GFP_ATOMIC);
if (cur == NULL)
break;
memcpy(cur->mac_addr,
ha->addr, ETH_ALEN);
list_add_tail(&cur->list, &adapter->vf_mc_list);
}
}
qlcnic_sriov_vf_schedule_multi(adapter->netdev);
return;
}
__qlcnic_set_multi(netdev, 0);
if (qlcnic_sriov_vf_check(adapter))
qlcnic_sriov_vf_set_multi(netdev);
else
__qlcnic_set_multi(netdev, 0);
}
int qlcnic_82xx_nic_set_promisc(struct qlcnic_adapter *adapter, u32 mode)

4
drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
View File

@ -1917,8 +1917,6 @@ void __qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
if (!test_and_clear_bit(__QLCNIC_DEV_UP, &adapter->state))
return;
if (qlcnic_sriov_vf_check(adapter))
qlcnic_sriov_cleanup_async_list(&adapter->ahw->sriov->bc);
smp_mb();
netif_carrier_off(netdev);
adapter->ahw->linkup = 0;
@ -1930,6 +1928,8 @@ void __qlcnic_down(struct qlcnic_adapter *adapter, struct net_device *netdev)
qlcnic_delete_lb_filters(adapter);
qlcnic_nic_set_promisc(adapter, QLCNIC_NIU_NON_PROMISC_MODE);
if (qlcnic_sriov_vf_check(adapter))
qlcnic_sriov_cleanup_async_list(&adapter->ahw->sriov->bc);
qlcnic_napi_disable(adapter);

3
drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h
View File

@ -151,13 +151,14 @@ struct qlcnic_vf_info {
struct qlcnic_trans_list rcv_pend;
struct qlcnic_adapter *adapter;
struct qlcnic_vport *vp;
struct mutex vlan_list_lock; /* Lock for VLAN list */
spinlock_t vlan_list_lock; /* Lock for VLAN list */
};
struct qlcnic_async_work_list {
struct list_head list;
struct work_struct work;
void *ptr;
struct qlcnic_cmd_args *cmd;
};
struct qlcnic_back_channel {

137
drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c
View File

@ -39,6 +39,8 @@ static int qlcnic_sriov_channel_cfg_cmd(struct qlcnic_adapter *, u8);
static void qlcnic_sriov_process_bc_cmd(struct work_struct *);
static int qlcnic_sriov_vf_shutdown(struct pci_dev *);
static int qlcnic_sriov_vf_resume(struct qlcnic_adapter *);
static int qlcnic_sriov_async_issue_cmd(struct qlcnic_adapter *,
struct qlcnic_cmd_args *);
static struct qlcnic_hardware_ops qlcnic_sriov_vf_hw_ops = {
.read_crb = qlcnic_83xx_read_crb,
@ -181,7 +183,7 @@ int qlcnic_sriov_init(struct qlcnic_adapter *adapter, int num_vfs)
vf->adapter = adapter;
vf->pci_func = qlcnic_sriov_virtid_fn(adapter, i);
mutex_init(&vf->send_cmd_lock);
mutex_init(&vf->vlan_list_lock);
spin_lock_init(&vf->vlan_list_lock);
INIT_LIST_HEAD(&vf->rcv_act.wait_list);
INIT_LIST_HEAD(&vf->rcv_pend.wait_list);
spin_lock_init(&vf->rcv_act.lock);
@ -1356,7 +1358,7 @@ static int qlcnic_sriov_retry_bc_cmd(struct qlcnic_adapter *adapter,
return -EIO;
}
static int qlcnic_sriov_issue_cmd(struct qlcnic_adapter *adapter,
static int __qlcnic_sriov_issue_cmd(struct qlcnic_adapter *adapter,
struct qlcnic_cmd_args *cmd)
{
struct qlcnic_hardware_context *ahw = adapter->ahw;
@ -1428,6 +1430,16 @@ cleanup_transaction:
return rsp;
}
static int qlcnic_sriov_issue_cmd(struct qlcnic_adapter *adapter,
struct qlcnic_cmd_args *cmd)
{
if (cmd->type == QLC_83XX_MBX_CMD_NO_WAIT)
return qlcnic_sriov_async_issue_cmd(adapter, cmd);
else
return __qlcnic_sriov_issue_cmd(adapter, cmd);
}
static int qlcnic_sriov_channel_cfg_cmd(struct qlcnic_adapter *adapter, u8 cmd_op)
{
struct qlcnic_cmd_args cmd;
@ -1458,58 +1470,28 @@ out:
return ret;
}
static void qlcnic_vf_add_mc_list(struct net_device *netdev)
static void qlcnic_vf_add_mc_list(struct net_device *netdev, const u8 *mac)
{
struct qlcnic_adapter *adapter = netdev_priv(netdev);
struct qlcnic_sriov *sriov = adapter->ahw->sriov;
struct qlcnic_mac_vlan_list *cur;
struct list_head *head, tmp_list;
struct qlcnic_vf_info *vf;
u16 vlan_id;
int i;
static const u8 bcast_addr[ETH_ALEN] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
vf = &adapter->ahw->sriov->vf_info[0];
INIT_LIST_HEAD(&tmp_list);
head = &adapter->vf_mc_list;
netif_addr_lock_bh(netdev);
while (!list_empty(head)) {
cur = list_entry(head->next, struct qlcnic_mac_vlan_list, list);
list_move(&cur->list, &tmp_list);
}
netif_addr_unlock_bh(netdev);
while (!list_empty(&tmp_list)) {
cur = list_entry((&tmp_list)->next,
struct qlcnic_mac_vlan_list, list);
if (!qlcnic_sriov_check_any_vlan(vf)) {
qlcnic_nic_add_mac(adapter, bcast_addr, 0);
qlcnic_nic_add_mac(adapter, cur->mac_addr, 0);
} else {
mutex_lock(&vf->vlan_list_lock);
for (i = 0; i < sriov->num_allowed_vlans; i++) {
vlan_id = vf->sriov_vlans[i];
if (vlan_id) {
qlcnic_nic_add_mac(adapter, bcast_addr,
vlan_id);
qlcnic_nic_add_mac(adapter,
cur->mac_addr,
vlan_id);
}
}
mutex_unlock(&vf->vlan_list_lock);
if (qlcnic_84xx_check(adapter)) {
qlcnic_nic_add_mac(adapter, bcast_addr, 0);
qlcnic_nic_add_mac(adapter, cur->mac_addr, 0);
}
if (!qlcnic_sriov_check_any_vlan(vf)) {
qlcnic_nic_add_mac(adapter, mac, 0);
} else {
spin_lock(&vf->vlan_list_lock);
for (i = 0; i < sriov->num_allowed_vlans; i++) {
vlan_id = vf->sriov_vlans[i];
if (vlan_id)
qlcnic_nic_add_mac(adapter, mac, vlan_id);
}
list_del(&cur->list);
kfree(cur);
spin_unlock(&vf->vlan_list_lock);
if (qlcnic_84xx_check(adapter))
qlcnic_nic_add_mac(adapter, mac, 0);
}
}
@ -1518,6 +1500,7 @@ void qlcnic_sriov_cleanup_async_list(struct qlcnic_back_channel *bc)
struct list_head *head = &bc->async_list;
struct qlcnic_async_work_list *entry;
flush_workqueue(bc->bc_async_wq);
while (!list_empty(head)) {
entry = list_entry(head->next, struct qlcnic_async_work_list,
list);
@ -1527,10 +1510,14 @@ void qlcnic_sriov_cleanup_async_list(struct qlcnic_back_channel *bc)
}
}
static void qlcnic_sriov_vf_set_multi(struct net_device *netdev)
void qlcnic_sriov_vf_set_multi(struct net_device *netdev)
{
struct qlcnic_adapter *adapter = netdev_priv(netdev);
struct qlcnic_hardware_context *ahw = adapter->ahw;
static const u8 bcast_addr[ETH_ALEN] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
struct netdev_hw_addr *ha;
u32 mode = VPORT_MISS_MODE_DROP;
if (!test_bit(__QLCNIC_FW_ATTACHED, &adapter->state))
@ -1542,23 +1529,27 @@ static void qlcnic_sriov_vf_set_multi(struct net_device *netdev)
} else if ((netdev->flags & IFF_ALLMULTI) ||
(netdev_mc_count(netdev) > ahw->max_mc_count)) {
mode = VPORT_MISS_MODE_ACCEPT_MULTI;
} else {
qlcnic_vf_add_mc_list(netdev, bcast_addr);
if (!netdev_mc_empty(netdev)) {
netdev_for_each_mc_addr(ha, netdev)
qlcnic_vf_add_mc_list(netdev, ha->addr);
}
}
if (qlcnic_sriov_vf_check(adapter))
qlcnic_vf_add_mc_list(netdev);
qlcnic_nic_set_promisc(adapter, mode);
}
static void qlcnic_sriov_handle_async_multi(struct work_struct *work)
static void qlcnic_sriov_handle_async_issue_cmd(struct work_struct *work)
{
struct qlcnic_async_work_list *entry;
struct net_device *netdev;
struct qlcnic_adapter *adapter;
struct qlcnic_cmd_args *cmd;
entry = container_of(work, struct qlcnic_async_work_list, work);
netdev = (struct net_device *)entry->ptr;
qlcnic_sriov_vf_set_multi(netdev);
adapter = entry->ptr;
cmd = entry->cmd;
__qlcnic_sriov_issue_cmd(adapter, cmd);
return;
}
@ -1588,8 +1579,9 @@ qlcnic_sriov_get_free_node_async_work(struct qlcnic_back_channel *bc)
return entry;
}
static void qlcnic_sriov_schedule_bc_async_work(struct qlcnic_back_channel *bc,
work_func_t func, void *data)
static void qlcnic_sriov_schedule_async_cmd(struct qlcnic_back_channel *bc,
work_func_t func, void *data,
struct qlcnic_cmd_args *cmd)
{
struct qlcnic_async_work_list *entry = NULL;
@ -1598,21 +1590,23 @@ static void qlcnic_sriov_schedule_bc_async_work(struct qlcnic_back_channel *bc,
return;
entry->ptr = data;
entry->cmd = cmd;
INIT_WORK(&entry->work, func);
queue_work(bc->bc_async_wq, &entry->work);
}
void qlcnic_sriov_vf_schedule_multi(struct net_device *netdev)
static int qlcnic_sriov_async_issue_cmd(struct qlcnic_adapter *adapter,
struct qlcnic_cmd_args *cmd)
{
struct qlcnic_adapter *adapter = netdev_priv(netdev);
struct qlcnic_back_channel *bc = &adapter->ahw->sriov->bc;
if (adapter->need_fw_reset)
return;
return -EIO;
qlcnic_sriov_schedule_bc_async_work(bc, qlcnic_sriov_handle_async_multi,
netdev);
qlcnic_sriov_schedule_async_cmd(bc, qlcnic_sriov_handle_async_issue_cmd,
adapter, cmd);
return 0;
}
static int qlcnic_sriov_vf_reinit_driver(struct qlcnic_adapter *adapter)
@ -1890,7 +1884,7 @@ static int qlcnic_sriov_check_vlan_id(struct qlcnic_sriov *sriov,
if (!vf->sriov_vlans)
return err;
mutex_lock(&vf->vlan_list_lock);
spin_lock_bh(&vf->vlan_list_lock);
for (i = 0; i < sriov->num_allowed_vlans; i++) {
if (vf->sriov_vlans[i] == vlan_id) {
@ -1899,7 +1893,7 @@ static int qlcnic_sriov_check_vlan_id(struct qlcnic_sriov *sriov,
}
}
mutex_unlock(&vf->vlan_list_lock);
spin_unlock_bh(&vf->vlan_list_lock);
return err;
}
@ -1908,12 +1902,12 @@ static int qlcnic_sriov_validate_num_vlans(struct qlcnic_sriov *sriov,
{
int err = 0;
mutex_lock(&vf->vlan_list_lock);
spin_lock_bh(&vf->vlan_list_lock);
if (vf->num_vlan >= sriov->num_allowed_vlans)
err = -EINVAL;
mutex_unlock(&vf->vlan_list_lock);
spin_unlock_bh(&vf->vlan_list_lock);
return err;
}
@ -1966,7 +1960,7 @@ static void qlcnic_sriov_vlan_operation(struct qlcnic_vf_info *vf, u16 vlan_id,
if (!vf->sriov_vlans)
return;
mutex_lock(&vf->vlan_list_lock);
spin_lock_bh(&vf->vlan_list_lock);
switch (opcode) {
case QLC_VLAN_ADD:
@ -1979,7 +1973,7 @@ static void qlcnic_sriov_vlan_operation(struct qlcnic_vf_info *vf, u16 vlan_id,
netdev_err(adapter->netdev, "Invalid VLAN operation\n");
}
mutex_unlock(&vf->vlan_list_lock);
spin_unlock_bh(&vf->vlan_list_lock);
return;
}
@ -1987,6 +1981,7 @@ int qlcnic_sriov_cfg_vf_guest_vlan(struct qlcnic_adapter *adapter,
u16 vid, u8 enable)
{
struct qlcnic_sriov *sriov = adapter->ahw->sriov;
struct net_device *netdev = adapter->netdev;
struct qlcnic_vf_info *vf;
struct qlcnic_cmd_args cmd;
int ret;
@ -2012,14 +2007,18 @@ int qlcnic_sriov_cfg_vf_guest_vlan(struct qlcnic_adapter *adapter,
dev_err(&adapter->pdev->dev,
"Failed to configure guest VLAN, err=%d\n", ret);
} else {
netif_addr_lock_bh(netdev);
qlcnic_free_mac_list(adapter);
netif_addr_unlock_bh(netdev);
if (enable)
qlcnic_sriov_vlan_operation(vf, vid, QLC_VLAN_ADD);
else
qlcnic_sriov_vlan_operation(vf, vid, QLC_VLAN_DELETE);
qlcnic_set_multi(adapter->netdev);
netif_addr_lock_bh(netdev);
qlcnic_set_multi(netdev);
netif_addr_unlock_bh(netdev);
}
qlcnic_free_mbx_args(&cmd);
@ -2150,11 +2149,11 @@ bool qlcnic_sriov_check_any_vlan(struct qlcnic_vf_info *vf)
{
bool err = false;
mutex_lock(&vf->vlan_list_lock);
spin_lock_bh(&vf->vlan_list_lock);
if (vf->num_vlan)
err = true;
mutex_unlock(&vf->vlan_list_lock);
spin_unlock_bh(&vf->vlan_list_lock);
return err;
}

36
drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_pf.c
View File

@ -784,7 +784,7 @@ static int qlcnic_sriov_cfg_vf_def_mac(struct qlcnic_adapter *adapter,
struct qlcnic_vf_info *vf,
u16 vlan, u8 op)
{
struct qlcnic_cmd_args cmd;
struct qlcnic_cmd_args *cmd;
struct qlcnic_macvlan_mbx mv;
struct qlcnic_vport *vp;
u8 *addr;
@ -794,21 +794,27 @@ static int qlcnic_sriov_cfg_vf_def_mac(struct qlcnic_adapter *adapter,
vp = vf->vp;
if (qlcnic_alloc_mbx_args(&cmd, adapter, QLCNIC_CMD_CONFIG_MAC_VLAN))
cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC);
if (!cmd)
return -ENOMEM;
err = qlcnic_alloc_mbx_args(cmd, adapter, QLCNIC_CMD_CONFIG_MAC_VLAN);
if (err)
goto free_cmd;
cmd->type = QLC_83XX_MBX_CMD_NO_WAIT;
vpid = qlcnic_sriov_pf_get_vport_handle(adapter, vf->pci_func);
if (vpid < 0) {
err = -EINVAL;
goto out;
goto free_args;
}
if (vlan)
op = ((op == QLCNIC_MAC_ADD || op == QLCNIC_MAC_VLAN_ADD) ?
QLCNIC_MAC_VLAN_ADD : QLCNIC_MAC_VLAN_DEL);
cmd.req.arg[1] = op | (1 << 8) | (3 << 6);
cmd.req.arg[1] |= ((vpid & 0xffff) << 16) | BIT_31;
cmd->req.arg[1] = op | (1 << 8) | (3 << 6);
cmd->req.arg[1] |= ((vpid & 0xffff) << 16) | BIT_31;
addr = vp->mac;
mv.vlan = vlan;
@ -818,18 +824,18 @@ static int qlcnic_sriov_cfg_vf_def_mac(struct qlcnic_adapter *adapter,
mv.mac_addr3 = addr[3];
mv.mac_addr4 = addr[4];
mv.mac_addr5 = addr[5];
buf = &cmd.req.arg[2];
buf = &cmd->req.arg[2];
memcpy(buf, &mv, sizeof(struct qlcnic_macvlan_mbx));
err = qlcnic_issue_cmd(adapter, &cmd);
err = qlcnic_issue_cmd(adapter, cmd);
if (err)
dev_err(&adapter->pdev->dev,
"MAC-VLAN %s to CAM failed, err=%d.\n",
((op == 1) ? "add " : "delete "), err);
if (!err)
return err;
out:
qlcnic_free_mbx_args(&cmd);
free_args:
qlcnic_free_mbx_args(cmd);
free_cmd:
kfree(cmd);
return err;
}
@ -851,7 +857,7 @@ static void qlcnic_83xx_cfg_default_mac_vlan(struct qlcnic_adapter *adapter,
sriov = adapter->ahw->sriov;
mutex_lock(&vf->vlan_list_lock);
spin_lock_bh(&vf->vlan_list_lock);
if (vf->num_vlan) {
for (i = 0; i < sriov->num_allowed_vlans; i++) {
vlan = vf->sriov_vlans[i];
@ -860,7 +866,7 @@ static void qlcnic_83xx_cfg_default_mac_vlan(struct qlcnic_adapter *adapter,
opcode);
}
}
mutex_unlock(&vf->vlan_list_lock);
spin_unlock_bh(&vf->vlan_list_lock);
if (vf->vp->vlan_mode != QLC_PVID_MODE) {
if (qlcnic_83xx_pf_check(adapter) &&