[net-next 02/14] i40evf: track outstanding client request

[Jeff Kirsher]

From: Mitch Williams <mitch.a.willi...@intel.com>

The iWarp client cannot continue until this operation has been completed
by the PF driver. Sleep (with timeout) until the reply from the PF
driver has been received.

Change-ID: I5dc41b857bba32d0218b7ce167b5da122dadf349
Signed-off-by: Mitch Williams <mitch.a.willi...@intel.com>
Tested-by: Andrew Bowers <andrewx.bow...@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
---
 drivers/net/ethernet/intel/i40evf/i40e_virtchnl.h   | 1 +
 drivers/net/ethernet/intel/i40evf/i40evf.h          | 1 +
 drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c | 4 ++++
 3 files changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/intel/i40evf/i40e_virtchnl.h 
b/drivers/net/ethernet/intel/i40evf/i40e_virtchnl.h
index fc374f8..d38a2b2 100644
--- a/drivers/net/ethernet/intel/i40evf/i40e_virtchnl.h
+++ b/drivers/net/ethernet/intel/i40evf/i40e_virtchnl.h
@@ -81,6 +81,7 @@ enum i40e_virtchnl_ops {
        I40E_VIRTCHNL_OP_GET_STATS = 15,
        I40E_VIRTCHNL_OP_FCOE = 16,
        I40E_VIRTCHNL_OP_EVENT = 17, /* must ALWAYS be 17 */
+       I40E_VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP = 21,
        I40E_VIRTCHNL_OP_CONFIG_RSS_KEY = 23,
        I40E_VIRTCHNL_OP_CONFIG_RSS_LUT = 24,
        I40E_VIRTCHNL_OP_GET_RSS_HENA_CAPS = 25,
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf.h 
b/drivers/net/ethernet/intel/i40evf/i40evf.h
index fffe4cf..00c42d8 100644
--- a/drivers/net/ethernet/intel/i40evf/i40evf.h
+++ b/drivers/net/ethernet/intel/i40evf/i40evf.h
@@ -195,6 +195,7 @@ struct i40evf_adapter {
        u64 hw_csum_rx_error;
        u32 rx_desc_count;
        int num_msix_vectors;
+       u32 client_pending;
        struct msix_entry *msix_entries;
 
        u32 flags;
diff --git a/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c 
b/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
index 2059a8e..bee58af 100644
--- a/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
+++ b/drivers/net/ethernet/intel/i40evf/i40evf_virtchnl.c
@@ -999,6 +999,10 @@ void i40evf_virtchnl_completion(struct i40evf_adapter 
*adapter,
                if (v_opcode != adapter->current_op)
                        return;
                break;
+       case I40E_VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP:
+               adapter->client_pending &=
+                               ~(BIT(I40E_VIRTCHNL_OP_CONFIG_IWARP_IRQ_MAP));
+               break;
        case I40E_VIRTCHNL_OP_GET_RSS_HENA_CAPS: {
                struct i40e_virtchnl_rss_hena *vrh =
                        (struct i40e_virtchnl_rss_hena *)msg;
-- 
2.10.2