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DCB: Add interface to query # of TCs supported by device

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Adds interface for Data Center Bridging (DCB) to query (and set if
supported) the number of traffic classes currently supported by the
device for the two (DCB) features: priority groups (PG) and priority
flow control (PFC).

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>
This commit is contained in:
Alexander Duyck
2008-11-20 21:08:19 -08:00
committed by David S. Miller
parent 46132188bf
commit 33dbabc4a7
4 changed files with 193 additions and 1 deletions
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27
include/linux/dcbnl.h
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@ -44,6 +44,8 @@ struct dcbmsg {
* @DCB_CMD_GPERM_HWADDR: get the permanent MAC address of the underlying
* device. Only useful when using bonding.
* @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
*/
enum dcbnl_commands {
DCB_CMD_UNDEFINED,
@ -62,6 +64,8 @@ enum dcbnl_commands {
DCB_CMD_SET_ALL,
DCB_CMD_GPERM_HWADDR,
DCB_CMD_GCAP,
DCB_CMD_GNUMTCS,
DCB_CMD_SNUMTCS,
__DCB_CMD_ENUM_MAX,
DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,
@ -81,6 +85,7 @@ enum dcbnl_commands {
* @DCB_ATTR_SET_ALL: bool to commit changes to hardware or not (NLA_U8)
* @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)
*/
enum dcbnl_attrs {
DCB_ATTR_UNDEFINED,
@ -94,6 +99,7 @@ enum dcbnl_attrs {
DCB_ATTR_SET_ALL,
DCB_ATTR_PERM_HWADDR,
DCB_ATTR_CAP,
DCB_ATTR_NUMTCS,
__DCB_ATTR_ENUM_MAX,
DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1,
@ -253,6 +259,27 @@ enum dcbnl_cap_attrs {
__DCB_CAP_ATTR_ENUM_MAX,
DCB_CAP_ATTR_MAX = __DCB_CAP_ATTR_ENUM_MAX - 1,
};
/**
* enum dcbnl_numtcs_attrs - number of traffic classes
*
* @DCB_NUMTCS_ATTR_UNDEFINED: unspecified attribute to catch errors
* @DCB_NUMTCS_ATTR_ALL: (NLA_FLAG) all traffic class attributes
* @DCB_NUMTCS_ATTR_PG: (NLA_U8) number of traffic classes used for
* priority groups
* @DCB_NUMTCS_ATTR_PFC: (NLA_U8) number of traffic classes which can
* support priority flow control
*/
enum dcbnl_numtcs_attrs {
DCB_NUMTCS_ATTR_UNDEFINED,
DCB_NUMTCS_ATTR_ALL,
DCB_NUMTCS_ATTR_PG,
DCB_NUMTCS_ATTR_PFC,
__DCB_NUMTCS_ATTR_ENUM_MAX,
DCB_NUMTCS_ATTR_MAX = __DCB_NUMTCS_ATTR_ENUM_MAX - 1,
};
/**
* enum dcb_general_attr_values - general DCB attribute values
*