bnx2x, cnic: Disable iSCSI if DCBX negotiation is successful
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>
diff --git a/drivers/net/bnx2x/bnx2x_dcb.c b/drivers/net/bnx2x/bnx2x_dcb.c
index 9a24d79..1214907 100644
--- a/drivers/net/bnx2x/bnx2x_dcb.c
+++ b/drivers/net/bnx2x/bnx2x_dcb.c
@@ -571,6 +571,28 @@
{
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
diff --git a/drivers/net/bnx2x/bnx2x_dcb.h b/drivers/net/bnx2x/bnx2x_dcb.h
index 71b8eda..1e14775 100644
--- a/drivers/net/bnx2x/bnx2x_dcb.h
+++ b/drivers/net/bnx2x/bnx2x_dcb.h
@@ -183,9 +183,13 @@
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 */
diff --git a/drivers/net/bnx2x/bnx2x_main.c b/drivers/net/bnx2x/bnx2x_main.c
index 32e64cc8..f3cf889 100644
--- a/drivers/net/bnx2x/bnx2x_main.c
+++ b/drivers/net/bnx2x/bnx2x_main.c
@@ -10342,6 +10342,11 @@
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;
diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c
index 8cca60e..5dfbff0 100644
--- a/drivers/net/cnic.c
+++ b/drivers/net/cnic.c
@@ -2966,31 +2966,36 @@
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 @@
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 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 @@
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];
diff --git a/drivers/net/cnic.h b/drivers/net/cnic.h
index 4456260..3367a6d3 100644
--- a/drivers/net/cnic.h
+++ b/drivers/net/cnic.h
@@ -226,6 +226,7 @@
#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;
diff --git a/drivers/net/cnic_if.h b/drivers/net/cnic_if.h
index e01b49e..fdd8e46 100644
--- a/drivers/net/cnic_if.h
+++ b/drivers/net/cnic_if.h
@@ -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 @@
#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 @@
#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;