interface: add capabilities flags

Type: improvement

This patch adds flags to represent the modern NICs capabilities.

Change-Id: I96d38d9ab7eac55974d72795cd100d8337168e1e
Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>

5 files changed, 46 insertions, 42 deletions

diff --git a/src/vnet/devices/af_packet/af_packet.c b/src/vnet/devices/af_packet/af_packet.c
index 2cc0cc70bca..60a3ccc081f 100644
--- a/src/vnet/devices/af_packet/af_packet.c
+++ b/src/vnet/devices/af_packet/af_packet.c
@@ -404,7 +404,7 @@ af_packet_create_if (vlib_main_t * vm, u8 * host_if_name, u8 * hw_addr_set,
   apif->queue_index = vnet_hw_if_register_rx_queue (vnm, apif->hw_if_index, 0,
 						    VNET_HW_IF_RXQ_THREAD_ANY);
 
-  hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE;
+  hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_INT_MODE;
   vnet_hw_interface_set_flags (vnm, apif->hw_if_index,
 			       VNET_HW_INTERFACE_FLAG_LINK_UP);
 
@@ -515,10 +515,15 @@ af_packet_set_l4_cksum_offload (vlib_main_t * vm, u32 sw_if_index, u8 set)
     return VNET_API_ERROR_INVALID_INTERFACE;
 
   if (set)
-    hw->flags &= ~VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
+    {
+      hw->caps &= ~(VNET_HW_INTERFACE_CAP_SUPPORTS_TX_TCP_CKSUM |
+		    VNET_HW_INTERFACE_CAP_SUPPORTS_TX_UDP_CKSUM);
+    }
   else
-    hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
-
+    {
+      hw->caps |= (VNET_HW_INTERFACE_CAP_SUPPORTS_TX_TCP_CKSUM |
+		   VNET_HW_INTERFACE_CAP_SUPPORTS_TX_UDP_CKSUM);
+    }
   return 0;
 }
 
diff --git a/src/vnet/devices/tap/tap.c b/src/vnet/devices/tap/tap.c
index 7e7d3d5e8c0..5b15f92051d 100644
--- a/src/vnet/devices/tap/tap.c
+++ b/src/vnet/devices/tap/tap.c
@@ -724,15 +724,17 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args)
   args->sw_if_index = vif->sw_if_index;
   args->rv = 0;
   hw = vnet_get_hw_interface (vnm, vif->hw_if_index);
-  hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE;
+  hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_INT_MODE;
   if (args->tap_flags & TAP_FLAG_GSO)
     {
-      hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO |
-	VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
+      hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO |
+		  VNET_HW_INTERFACE_CAP_SUPPORTS_TX_TCP_CKSUM |
+		  VNET_HW_INTERFACE_CAP_SUPPORTS_TX_UDP_CKSUM;
     }
   else if (args->tap_flags & TAP_FLAG_CSUM_OFFLOAD)
     {
-      hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
+      hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_TX_TCP_CKSUM |
+		  VNET_HW_INTERFACE_CAP_SUPPORTS_TX_UDP_CKSUM;
     }
   if ((args->tap_flags & TAP_FLAG_GSO)
       && (args->tap_flags & TAP_FLAG_GRO_COALESCE))
@@ -834,26 +836,18 @@ tap_csum_offload_enable_disable (vlib_main_t * vm, u32 sw_if_index,
   vif->packet_coalesce = 0;
   vif->csum_offload_enabled = enable_disable ? 1 : 0;
 
-  if ((hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) != 0)
+  if ((hw->caps & VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO) != 0)
     {
-      hw->flags &= ~VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO;
+      hw->caps &= ~VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO;
     }
 
   if (enable_disable)
     {
-      if ((hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD) ==
-	  0)
-	{
-	  hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
-	}
+      hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_L4_TX_CKSUM;
     }
   else
     {
-      if ((hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD) !=
-	  0)
-	{
-	  hw->flags &= ~VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
-	}
+      hw->caps &= ~VNET_HW_INTERFACE_CAP_SUPPORTS_L4_TX_CKSUM;
     }
 
 error:
@@ -893,10 +887,10 @@ tap_gso_enable_disable (vlib_main_t * vm, u32 sw_if_index, int enable_disable,
   vif->csum_offload_enabled = 0;
   if (enable_disable)
     {
-      if ((hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) == 0)
+      if ((hw->caps & VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO) == 0)
 	{
-	  hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO |
-	    VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
+	  hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO |
+		      VNET_HW_INTERFACE_CAP_SUPPORTS_L4_TX_CKSUM;
 	}
       if (is_packet_coalesce)
 	{
@@ -905,10 +899,10 @@ tap_gso_enable_disable (vlib_main_t * vm, u32 sw_if_index, int enable_disable,
     }
   else
     {
-      if ((hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO) != 0)
+      if ((hw->caps & VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO) != 0)
 	{
-	  hw->flags &= ~(VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO |
-			 VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD);
+	  hw->caps &= ~(VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO |
+			VNET_HW_INTERFACE_CAP_SUPPORTS_L4_TX_CKSUM);
 	}
       vif->packet_coalesce = 0;
     }
diff --git a/src/vnet/devices/virtio/device.c b/src/vnet/devices/virtio/device.c
index fb996d551fa..e71e16caecc 100644
--- a/src/vnet/devices/virtio/device.c
+++ b/src/vnet/devices/virtio/device.c
@@ -965,12 +965,12 @@ virtio_interface_tx_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
   vnet_main_t *vnm = vnet_get_main ();
   vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, vif->hw_if_index);
 
-  if (hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO)
+  if (hw->caps & VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO)
     return virtio_interface_tx_gso_inline (vm, node, vif, type, vring,
 					   buffers, n_left, packed,
 					   1 /* do_gso */ ,
 					   1 /* checksum offload */ );
-  else if (hw->flags & VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD)
+  else if (hw->caps & VNET_HW_INTERFACE_CAP_SUPPORTS_L4_TX_CKSUM)
     return virtio_interface_tx_gso_inline (vm, node, vif, type, vring,
 					   buffers, n_left, packed,
 					   0 /* no do_gso */ ,
diff --git a/src/vnet/devices/virtio/pci.c b/src/vnet/devices/virtio/pci.c
index 79bd0047570..7ef4b2a52dd 100644
--- a/src/vnet/devices/virtio/pci.c
+++ b/src/vnet/devices/virtio/pci.c
@@ -525,8 +525,9 @@ virtio_pci_offloads (vlib_main_t * vm, virtio_if_t * vif, int gso_enabled,
 	    {
 	      vif->gso_enabled = 1;
 	      vif->csum_offload_enabled = 0;
-	      hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO |
-		VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
+	      hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO |
+			  VNET_HW_INTERFACE_CAP_SUPPORTS_TX_TCP_CKSUM |
+			  VNET_HW_INTERFACE_CAP_SUPPORTS_TX_UDP_CKSUM;
 	    }
 	}
       else if (csum_offload_enabled
@@ -540,9 +541,9 @@ virtio_pci_offloads (vlib_main_t * vm, virtio_if_t * vif, int gso_enabled,
 	    {
 	      vif->csum_offload_enabled = 1;
 	      vif->gso_enabled = 0;
-	      hw->flags &= ~VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO;
-	      hw->flags |=
-		VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD;
+	      hw->caps &= ~VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO;
+	      hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_TX_TCP_CKSUM |
+			  VNET_HW_INTERFACE_CAP_SUPPORTS_TX_UDP_CKSUM;
 	    }
 	}
       else
@@ -555,8 +556,8 @@ virtio_pci_offloads (vlib_main_t * vm, virtio_if_t * vif, int gso_enabled,
 	    {
 	      vif->csum_offload_enabled = 0;
 	      vif->gso_enabled = 0;
-	      hw->flags &= ~(VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO |
-			     VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD);
+	      hw->caps &= ~(VNET_HW_INTERFACE_CAP_SUPPORTS_L4_TX_CKSUM |
+			    VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO);
 	    }
 	}
     }
@@ -1500,7 +1501,7 @@ virtio_pci_create_if (vlib_main_t * vm, virtio_pci_create_if_args_t * args)
   args->sw_if_index = sw->sw_if_index;
 
   vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, vif->hw_if_index);
-  hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE;
+  hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_INT_MODE;
 
   if (args->virtio_flags & VIRTIO_FLAG_BUFFERING)
     {
diff --git a/src/vnet/devices/virtio/vhost_user.c b/src/vnet/devices/virtio/vhost_user.c
index 426f03c6ab1..5f04db09395 100644
--- a/src/vnet/devices/virtio/vhost_user.c
+++ b/src/vnet/devices/virtio/vhost_user.c
@@ -515,12 +515,16 @@ vhost_user_socket_read (clib_file_t * uf)
       if (vui->enable_gso &&
 	  ((vui->features & FEATURE_VIRTIO_NET_F_HOST_GUEST_TSO_FEATURE_BITS)
 	   == FEATURE_VIRTIO_NET_F_HOST_GUEST_TSO_FEATURE_BITS))
-	hw->flags |=
-	  (VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO |
-	   VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD);
+	{
+	  hw->caps |= (VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO |
+		       VNET_HW_INTERFACE_CAP_SUPPORTS_TX_TCP_CKSUM |
+		       VNET_HW_INTERFACE_CAP_SUPPORTS_TX_UDP_CKSUM);
+	}
       else
-	hw->flags &= ~(VNET_HW_INTERFACE_FLAG_SUPPORTS_GSO |
-		       VNET_HW_INTERFACE_FLAG_SUPPORTS_TX_L4_CKSUM_OFFLOAD);
+	{
+	  hw->caps &= ~(VNET_HW_INTERFACE_CAP_SUPPORTS_TCP_GSO |
+			VNET_HW_INTERFACE_CAP_SUPPORTS_L4_TX_CKSUM);
+	}
       vnet_hw_interface_set_flags (vnm, vui->hw_if_index, 0);
       vui->is_ready = 0;
       vhost_user_update_iface_state (vui);
@@ -1619,7 +1623,7 @@ vhost_user_vui_init (vnet_main_t * vnm, vhost_user_intf_t * vui,
   for (q = 0; q < vec_len (vui->vrings); q++)
     vhost_user_vring_init (vui, q);
 
-  hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE;
+  hw->caps |= VNET_HW_INTERFACE_CAP_SUPPORTS_INT_MODE;
   vnet_hw_interface_set_flags (vnm, vui->hw_if_index, 0);
 
   if (sw_if_index)