DCB: Add support for DCB BCN
Adds an interface to configure the Backward Congestion Notification
(BCN) feature. In a BCN capabale network, congestion notifications
from congested points out in the network can cause the end station
limit the rate of a given traffic flow.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h
index 6cc4560..e73a614 100644
--- a/include/linux/dcbnl.h
+++ b/include/linux/dcbnl.h
@@ -46,6 +46,8 @@
* @DCB_CMD_GCAP: request the DCB capabilities of the device
* @DCB_CMD_GNUMTCS: get the number of traffic classes currently supported
* @DCB_CMD_SNUMTCS: set the number of traffic classes
+ * @DCB_CMD_GBCN: set backward congestion notification configuration
+ * @DCB_CMD_SBCN: get backward congestion notification configration.
*/
enum dcbnl_commands {
DCB_CMD_UNDEFINED,
@@ -62,18 +64,24 @@
DCB_CMD_PFC_SCFG,
DCB_CMD_SET_ALL,
+
DCB_CMD_GPERM_HWADDR,
+
DCB_CMD_GCAP,
+
DCB_CMD_GNUMTCS,
DCB_CMD_SNUMTCS,
+
DCB_CMD_PFC_GSTATE,
DCB_CMD_PFC_SSTATE,
+ DCB_CMD_BCN_GCFG,
+ DCB_CMD_BCN_SCFG,
+
__DCB_CMD_ENUM_MAX,
DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,
};
-
/**
* enum dcbnl_attrs - DCB top-level netlink attributes
*
@@ -88,6 +96,7 @@
* @DCB_ATTR_PERM_HWADDR: MAC address of the physical device (NLA_NESTED)
* @DCB_ATTR_CAP: DCB capabilities of the device (NLA_NESTED)
* @DCB_ATTR_NUMTCS: number of traffic classes supported (NLA_NESTED)
+ * @DCB_ATTR_BCN: backward congestion notification configuration (NLA_NESTED)
*/
enum dcbnl_attrs {
DCB_ATTR_UNDEFINED,
@@ -102,6 +111,7 @@
DCB_ATTR_PERM_HWADDR,
DCB_ATTR_CAP,
DCB_ATTR_NUMTCS,
+ DCB_ATTR_BCN,
__DCB_ATTR_ENUM_MAX,
DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1,
@@ -282,6 +292,38 @@
DCB_NUMTCS_ATTR_MAX = __DCB_NUMTCS_ATTR_ENUM_MAX - 1,
};
+enum dcbnl_bcn_attrs{
+ DCB_BCN_ATTR_UNDEFINED = 0,
+
+ DCB_BCN_ATTR_RP_0,
+ DCB_BCN_ATTR_RP_1,
+ DCB_BCN_ATTR_RP_2,
+ DCB_BCN_ATTR_RP_3,
+ DCB_BCN_ATTR_RP_4,
+ DCB_BCN_ATTR_RP_5,
+ DCB_BCN_ATTR_RP_6,
+ DCB_BCN_ATTR_RP_7,
+ DCB_BCN_ATTR_RP_ALL,
+
+ DCB_BCN_ATTR_ALPHA,
+ DCB_BCN_ATTR_BETA,
+ DCB_BCN_ATTR_GD,
+ DCB_BCN_ATTR_GI,
+ DCB_BCN_ATTR_TMAX,
+ DCB_BCN_ATTR_TD,
+ DCB_BCN_ATTR_RMIN,
+ DCB_BCN_ATTR_W,
+ DCB_BCN_ATTR_RD,
+ DCB_BCN_ATTR_RU,
+ DCB_BCN_ATTR_WRTT,
+ DCB_BCN_ATTR_RI,
+ DCB_BCN_ATTR_C,
+ DCB_BCN_ATTR_ALL,
+
+ __DCB_BCN_ATTR_ENUM_MAX,
+ DCB_BCN_ATTR_MAX = __DCB_BCN_ATTR_ENUM_MAX - 1,
+};
+
/**
* enum dcb_general_attr_values - general DCB attribute values
*