virtchnl: Added support to exchange additional speed values

Introduced a new virtchnl capability flag and a struct to support exchange
of additional supported speeds.

Signed-off-by: Yashaswini Raghuram Prathivadi Bhayankaram <yashaswini.raghuram.prathivadi.bhayankaram@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/include/linux/avf/virtchnl.h b/include/linux/avf/virtchnl.h
index b41f7bc958ef8fc706315c4143ce3a978b878178..2c9756bd9c4cdc4b07ac9e8f6158480b0e58d88f 100644 (file)
--- a/include/linux/avf/virtchnl.h
+++ b/include/linux/avf/virtchnl.h
@@ -252,6 +252,8 @@ VIRTCHNL_CHECK_STRUCT_LEN(16, virtchnl_vsi_resource);
 #define VIRTCHNL_VF_OFFLOAD_RX_ENCAP_CSUM      0X00400000
 #define VIRTCHNL_VF_OFFLOAD_ADQ                        0X00800000
 
+/* Define below the capability flags that are not offloads */
+#define VIRTCHNL_VF_CAP_ADV_LINK_SPEED         0x00000080
 #define VF_BASE_MODE_OFFLOADS (VIRTCHNL_VF_OFFLOAD_L2 | \
                               VIRTCHNL_VF_OFFLOAD_VLAN | \
                               VIRTCHNL_VF_OFFLOAD_RSS_PF)
@@ -596,10 +598,23 @@ enum virtchnl_event_codes {
 struct virtchnl_pf_event {
        enum virtchnl_event_codes event;
        union {
+               /* If the PF driver does not support the new speed reporting
+                * capabilities then use link_event else use link_event_adv to
+                * get the speed and link information. The ability to understand
+                * new speeds is indicated by setting the capability flag
+                * VIRTCHNL_VF_CAP_ADV_LINK_SPEED in vf_cap_flags parameter
+                * in virtchnl_vf_resource struct and can be used to determine
+                * which link event struct to use below.
+                */
                struct {
                        enum virtchnl_link_speed link_speed;
                        bool link_status;
                } link_event;
+               struct {
+                       /* link_speed provided in Mbps */
+                       u32 link_speed;
+                       u8 link_status;
+               } link_event_adv;
        } event_data;
 
        int severity;