virtchnl: Add virtchl structures to support queue channels

This patch defines new structs in support of the virtchannel message
that the VF sends to the PF to create a queue channel specified by the
user via tc tool.

Signed-off-by: Harshitha Ramamurthy <harshitha.ramamurthy@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

include/linux/avf/virtchnl.h

@@ -136,6 +136,8 @@ enum virtchnl_ops {
  VIRTCHNL_OP_ENABLE_VLAN_STRIPPING = 27,
  VIRTCHNL_OP_DISABLE_VLAN_STRIPPING = 28,
  VIRTCHNL_OP_REQUEST_QUEUES = 29,
+ VIRTCHNL_OP_ENABLE_CHANNELS = 30,
+ VIRTCHNL_OP_DISABLE_CHANNELS = 31,
 };
 
 /* This macro is used to generate a compilation error if a structure
@@ -244,6 +246,7 @@ VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource);
 #define VIRTCHNL_VF_OFFLOAD_ENCAP 0X00100000
 #define VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM 0X00200000
 #define VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM 0X00400000
+#define VIRTCHNL_VF_OFFLOAD_ADQ 0X00800000
 
 #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \
  VIRTCHNL_VF_OFFLOAD_VLAN | \
@@ -496,6 +499,30 @@ struct virtchnl_rss_hena {
 
 VIRTCHNL_CHECK_STRUCT_LEN(8, virtchnl_rss_hena);
 
+/* VIRTCHNL_OP_ENABLE_CHANNELS
+ * VIRTCHNL_OP_DISABLE_CHANNELS
+ * VF sends these messages to enable or disable channels based on
+ * the user specified queue count and queue offset for each traffic class.
+ * This struct encompasses all the information that the PF needs from
+ * VF to create a channel.
+ */
+struct virtchnl_channel_info {
+ u16 count; /* number of queues in a channel */
+ u16 offset; /* queues in a channel start from 'offset' */
+ u32 pad;
+ u64 max_tx_rate;
+};
+
+VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_channel_info);
+
+struct virtchnl_tc_info {
+ u32 num_tc;
+ u32 pad;
+ struct virtchnl_channel_info list[1];
+};
+
+VIRTCHNL_CHECK_STRUCT_LEN(24, virtchnl_tc_info);
+
 /* VIRTCHNL_OP_EVENT
  * PF sends this message to inform the VF driver of events that may affect it.
  * No direct response is expected from the VF, though it may generate other
@@ -711,6 +738,19 @@ virtchnl_vc_validate_vf_msg(struct virtchnl_version_info *ver, u32 v_opcode,
  case VIRTCHNL_OP_REQUEST_QUEUES:
  valid_len = sizeof(struct virtchnl_vf_res_request);
  break;
+ case VIRTCHNL_OP_ENABLE_CHANNELS:
+ valid_len = sizeof(struct virtchnl_tc_info);
+ if (msglen >= valid_len) {
+ struct virtchnl_tc_info *vti =
+ (struct virtchnl_tc_info *)msg;
+ valid_len += vti->num_tc *
+ sizeof(struct virtchnl_channel_info);
+ if (vti->num_tc == 0)
+ err_msg_format = true;
+ }
+ break;
+ case VIRTCHNL_OP_DISABLE_CHANNELS:
+ break;
  /* These are always errors coming from the VF. */
  case VIRTCHNL_OP_EVENT:
  case VIRTCHNL_OP_UNKNOWN: