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bnx2x, cnic: Disable iSCSI if DCBX negotiation is successful

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With current bnx2x firmware 6.2.9, iSCSI is not supported in DCB
network, so we need to disable it.  Add cnic command to disconnect
iSCSI connections and prevent future connections when DCBX negotiation
succeeds.

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dmitry Kravkov 2011-03-31 17:04:22 -07:00 committed by David S. Miller
parent 3b7f817e47
commit fab0dc89f0
6 changed files with 84 additions and 24 deletions
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22
drivers/net/bnx2x/bnx2x_dcb.c
View File

@ -571,6 +571,28 @@ void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state)
{
switch (state) {
case BNX2X_DCBX_STATE_NEG_RECEIVED:
#ifdef BCM_CNIC
if (bp->state != BNX2X_STATE_OPENING_WAIT4_LOAD) {
struct cnic_ops *c_ops;
struct cnic_eth_dev *cp = &bp->cnic_eth_dev;
bp->flags |= NO_ISCSI_OOO_FLAG | NO_ISCSI_FLAG;
cp->drv_state |= CNIC_DRV_STATE_NO_ISCSI_OOO;
cp->drv_state |= CNIC_DRV_STATE_NO_ISCSI;
rcu_read_lock();
c_ops = rcu_dereference(bp->cnic_ops);
if (c_ops) {
bnx2x_cnic_notify(bp, CNIC_CTL_STOP_ISCSI_CMD);
rcu_read_unlock();
return;
}
rcu_read_unlock();
}
/* fall through if no CNIC initialized */
case BNX2X_DCBX_STATE_ISCSI_STOPPED:
#endif
{
DP(NETIF_MSG_LINK, "BNX2X_DCBX_STATE_NEG_RECEIVED\n");
#ifdef BCM_DCBNL

8
drivers/net/bnx2x/bnx2x_dcb.h
View File

@ -183,9 +183,13 @@ void bnx2x_dcbx_set_state(struct bnx2x *bp, bool dcb_on, u32 dcbx_enabled);
enum {
BNX2X_DCBX_STATE_NEG_RECEIVED = 0x1,
BNX2X_DCBX_STATE_TX_PAUSED = 0x2,
BNX2X_DCBX_STATE_TX_RELEASED = 0x4
#ifdef BCM_CNIC
BNX2X_DCBX_STATE_ISCSI_STOPPED,
#endif
BNX2X_DCBX_STATE_TX_PAUSED,
BNX2X_DCBX_STATE_TX_RELEASED
};
void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state);
/* DCB netlink */

5
drivers/net/bnx2x/bnx2x_main.c
View File

@ -10342,6 +10342,11 @@ static int bnx2x_drv_ctl(struct net_device *dev, struct drv_ctl_info *ctl)
break;
}
case DRV_CTL_ISCSI_STOPPED_CMD: {
bnx2x_dcbx_set_params(bp, BNX2X_DCBX_STATE_ISCSI_STOPPED);
break;
}
default:
BNX2X_ERR("unknown command %x\n", ctl->cmd);
rc = -EINVAL;

66
drivers/net/cnic.c
View File

@ -2966,31 +2966,36 @@ static int cnic_service_bnx2x(void *data, void *status_blk)
return 0;
}
static void cnic_ulp_stop_one(struct cnic_local *cp, int if_type)
{
struct cnic_ulp_ops *ulp_ops;
if (if_type == CNIC_ULP_ISCSI)
cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
mutex_lock(&cnic_lock);
ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
lockdep_is_held(&cnic_lock));
if (!ulp_ops) {
mutex_unlock(&cnic_lock);
return;
}
set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
mutex_unlock(&cnic_lock);
if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
}
static void cnic_ulp_stop(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
int if_type;
cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++) {
struct cnic_ulp_ops *ulp_ops;
mutex_lock(&cnic_lock);
ulp_ops = rcu_dereference_protected(cp->ulp_ops[if_type],
lockdep_is_held(&cnic_lock));
if (!ulp_ops) {
mutex_unlock(&cnic_lock);
continue;
}
set_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
mutex_unlock(&cnic_lock);
if (test_and_clear_bit(ULP_F_START, &cp->ulp_flags[if_type]))
ulp_ops->cnic_stop(cp->ulp_handle[if_type]);
clear_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[if_type]);
}
for (if_type = 0; if_type < MAX_CNIC_ULP_TYPE; if_type++)
cnic_ulp_stop_one(cp, if_type);
}
static void cnic_ulp_start(struct cnic_dev *dev)
@ -3039,6 +3044,12 @@ static int cnic_ctl(void *data, struct cnic_ctl_info *info)
cnic_put(dev);
break;
case CNIC_CTL_STOP_ISCSI_CMD: {
struct cnic_local *cp = dev->cnic_priv;
set_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags);
queue_delayed_work(cnic_wq, &cp->delete_task, 0);
break;
}
case CNIC_CTL_COMPLETION_CMD: {
u32 cid = BNX2X_SW_CID(info->data.comp.cid);
u32 l5_cid;
@ -3562,8 +3573,12 @@ static void cnic_init_csk_state(struct cnic_sock *csk)
static int cnic_cm_connect(struct cnic_sock *csk, struct cnic_sockaddr *saddr)
{
struct cnic_local *cp = csk->dev->cnic_priv;
int err = 0;
if (cp->ethdev->drv_state & CNIC_DRV_STATE_NO_ISCSI)
return -EOPNOTSUPP;
if (!cnic_in_use(csk))
return -EINVAL;
@ -3965,6 +3980,17 @@ static void cnic_delete_task(struct work_struct *work)
cp = container_of(work, struct cnic_local, delete_task.work);
dev = cp->dev;
if (test_and_clear_bit(CNIC_LCL_FL_STOP_ISCSI, &cp->cnic_local_flags)) {
struct drv_ctl_info info;
rtnl_lock();
cnic_ulp_stop_one(cp, CNIC_ULP_ISCSI);
rtnl_unlock();
info.cmd = DRV_CTL_ISCSI_STOPPED_CMD;
cp->ethdev->drv_ctl(dev->netdev, &info);
}
for (i = 0; i < cp->max_cid_space; i++) {
struct cnic_context *ctx = &cp->ctx_tbl[i];

1
drivers/net/cnic.h
View File

@ -226,6 +226,7 @@ struct cnic_local {
#define CNIC_LCL_FL_KWQ_INIT 0x0
#define CNIC_LCL_FL_L2_WAIT 0x1
#define CNIC_LCL_FL_RINGS_INITED 0x2
#define CNIC_LCL_FL_STOP_ISCSI 0x4
struct cnic_dev *dev;

6
drivers/net/cnic_if.h
View File

@ -12,8 +12,8 @@
#ifndef CNIC_IF_H
#define CNIC_IF_H
#define CNIC_MODULE_VERSION "2.2.13"
#define CNIC_MODULE_RELDATE "Jan 31, 2011"
#define CNIC_MODULE_VERSION "2.2.14"
#define CNIC_MODULE_RELDATE "Mar 30, 2011"
#define CNIC_ULP_RDMA 0
#define CNIC_ULP_ISCSI 1
@ -85,6 +85,7 @@ struct kcqe {
#define CNIC_CTL_STOP_CMD 1
#define CNIC_CTL_START_CMD 2
#define CNIC_CTL_COMPLETION_CMD 3
#define CNIC_CTL_STOP_ISCSI_CMD 4
#define DRV_CTL_IO_WR_CMD 0x101
#define DRV_CTL_IO_RD_CMD 0x102
@ -94,6 +95,7 @@ struct kcqe {
#define DRV_CTL_START_L2_CMD 0x106
#define DRV_CTL_STOP_L2_CMD 0x107
#define DRV_CTL_RET_L2_SPQ_CREDIT_CMD 0x10c
#define DRV_CTL_ISCSI_STOPPED_CMD 0x10d
struct cnic_ctl_completion {
u32 cid;