dcbnl: adding DCBX feature flags get-set

Adding a pair of set-get routines to dcbnl for setting the negotiation
flags of the various DCB features. Conforms to the CEE flavor of DCBX
The user sets these flags (enable, advertise, willing) for each feature
to be used by the DCBX engine. The 'get' routine returns which of the
features is enabled after the negotiation.

This patch is dependent on the following patches:
[net-next-2.6 PATCH 1/3] dcbnl: add support for ieee8021Qaz attributes
[net-next-2.6 PATCH 2/3] dcbnl: add appliction tlv handlers
[net-next-2.6 PATCH 3/3] net_dcb: add application notifiers

Signed-off-by: Shmulik Ravid <shmulikr@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 33 insertions, 0 deletions

diff --git a/include/linux/dcbnl.h b/include/linux/dcbnl.h
index 16eea36d8934..68cd248f6d3e 100644
--- a/include/linux/dcbnl.h
+++ b/include/linux/dcbnl.h
@@ -137,6 +137,8 @@ struct dcbmsg {
  * @DCB_CMD_IEEE_GET: get IEEE 802.1Qaz configuration
  * @DCB_CMD_GDCBX: get DCBX engine configuration
  * @DCB_CMD_SDCBX: set DCBX engine configuration
+ * @DCB_CMD_GFEATCFG: get DCBX features flags
+ * @DCB_CMD_SFEATCFG: set DCBX features negotiation flags
  */
 enum dcbnl_commands {
         DCB_CMD_UNDEFINED,
@@ -176,6 +178,9 @@ enum dcbnl_commands {
         DCB_CMD_GDCBX,
         DCB_CMD_SDCBX,
 
+        DCB_CMD_GFEATCFG,
+        DCB_CMD_SFEATCFG,
+
         __DCB_CMD_ENUM_MAX,
         DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,
 };
@@ -197,6 +202,7 @@ enum dcbnl_commands {
  * @DCB_ATTR_BCN: backward congestion notification configuration (NLA_NESTED)
  * @DCB_ATTR_IEEE: IEEE 802.1Qaz supported attributes (NLA_NESTED)
  * @DCB_ATTR_DCBX: DCBX engine configuration in the device (NLA_U8)
+ * @DCB_ATTR_FEATCFG: DCBX features flags (NLA_NESTED)
  */
 enum dcbnl_attrs {
         DCB_ATTR_UNDEFINED,
@@ -218,6 +224,7 @@ enum dcbnl_attrs {
         DCB_ATTR_IEEE,
 
         DCB_ATTR_DCBX,
+        DCB_ATTR_FEATCFG,
 
         __DCB_ATTR_ENUM_MAX,
         DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1,
@@ -506,4 +513,30 @@ enum dcbnl_app_attrs {
         DCB_APP_ATTR_MAX = __DCB_APP_ATTR_ENUM_MAX - 1,
 };
 
+/**
+ * enum dcbnl_featcfg_attrs - features conifiguration flags
+ *
+ * @DCB_FEATCFG_ATTR_UNDEFINED: unspecified attribute to catch errors
+ * @DCB_FEATCFG_ATTR_ALL: (NLA_FLAG) all features configuration attributes
+ * @DCB_FEATCFG_ATTR_PG: (NLA_U8) configuration flags for priority groups
+ * @DCB_FEATCFG_ATTR_PFC: (NLA_U8) configuration flags for priority
+ *                                 flow control
+ * @DCB_FEATCFG_ATTR_APP: (NLA_U8) configuration flags for application TLV
+ *
+ */
+#define DCB_FEATCFG_ERROR       0x01    /* error in feature resolution */
+#define DCB_FEATCFG_ENABLE      0x02    /* enable feature */
+#define DCB_FEATCFG_WILLING     0x04    /* feature is willing */
+#define DCB_FEATCFG_ADVERTISE   0x08    /* advertise feature */
+enum dcbnl_featcfg_attrs {
+        DCB_FEATCFG_ATTR_UNDEFINED,
+        DCB_FEATCFG_ATTR_ALL,
+        DCB_FEATCFG_ATTR_PG,
+        DCB_FEATCFG_ATTR_PFC,
+        DCB_FEATCFG_ATTR_APP,
+
+        __DCB_FEATCFG_ATTR_ENUM_MAX,
+        DCB_FEATCFG_ATTR_MAX = __DCB_FEATCFG_ATTR_ENUM_MAX - 1,
+};
+
 #endif /* __LINUX_DCBNL_H__ */