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dcbnl: adding DCBX engine capability

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Adding an optional DCBX capability and a pair for get-set routines for
setting the device DCBX mode. The DCBX capability is a bit field of
supported attributes. The user is expected to set the DCBX mode with a
subset of the advertised attributes.

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>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shmulik Ravid
2010-12-30 06:26:48 +00:00
committed by David S. Miller
parent 96b99684e3
commit 6241b6259b
3 changed files with 91 additions and 0 deletions
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43
include/linux/dcbnl.h
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@ -135,6 +135,8 @@ struct dcbmsg {
* @DCB_CMD_SAPP: set application protocol configuration
* @DCB_CMD_IEEE_SET: set IEEE 802.1Qaz configuration
* @DCB_CMD_IEEE_GET: get IEEE 802.1Qaz configuration
* @DCB_CMD_GDCBX: get DCBX engine configuration
* @DCB_CMD_SDCBX: set DCBX engine configuration
*/
enum dcbnl_commands {
DCB_CMD_UNDEFINED,
@ -171,6 +173,9 @@ enum dcbnl_commands {
DCB_CMD_IEEE_SET,
DCB_CMD_IEEE_GET,
DCB_CMD_GDCBX,
DCB_CMD_SDCBX,
__DCB_CMD_ENUM_MAX,
DCB_CMD_MAX = __DCB_CMD_ENUM_MAX - 1,
};
@ -191,6 +196,7 @@ enum dcbnl_commands {
* @DCB_ATTR_NUMTCS: number of traffic classes supported (NLA_NESTED)
* @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)
*/
enum dcbnl_attrs {
DCB_ATTR_UNDEFINED,
@ -211,6 +217,8 @@ enum dcbnl_attrs {
/* IEEE std attributes */
DCB_ATTR_IEEE,
DCB_ATTR_DCBX,
__DCB_ATTR_ENUM_MAX,
DCB_ATTR_MAX = __DCB_ATTR_ENUM_MAX - 1,
};
@ -370,6 +378,8 @@ enum dcbnl_tc_attrs {
* @DCB_CAP_ATTR_GSP: (NLA_U8) device supports group strict priority
* @DCB_CAP_ATTR_BCN: (NLA_U8) device supports Backwards Congestion
* Notification
* @DCB_CAP_ATTR_DCBX: (NLA_U8) device supports DCBX engine
*
*/
enum dcbnl_cap_attrs {
DCB_CAP_ATTR_UNDEFINED,
@ -381,11 +391,44 @@ enum dcbnl_cap_attrs {
DCB_CAP_ATTR_PFC_TCS,
DCB_CAP_ATTR_GSP,
DCB_CAP_ATTR_BCN,
DCB_CAP_ATTR_DCBX,
__DCB_CAP_ATTR_ENUM_MAX,
DCB_CAP_ATTR_MAX = __DCB_CAP_ATTR_ENUM_MAX - 1,
};
/**
* DCBX capability flags
*
* @DCB_CAP_DCBX_HOST: DCBX negotiation is performed by the host LLDP agent.
* 'set' routines are used to configure the device with
* the negotiated parameters
*
* @DCB_CAP_DCBX_LLD_MANAGED: DCBX negotiation is not performed in the host but
* by another entity
* 'get' routines are used to retrieve the
* negotiated parameters
* 'set' routines can be used to set the initial
* negotiation configuration
*
* @DCB_CAP_DCBX_VER_CEE: for a non-host DCBX engine, indicates the engine
* supports the CEE protocol flavor
*
* @DCB_CAP_DCBX_VER_IEEE: for a non-host DCBX engine, indicates the engine
* supports the IEEE protocol flavor
*
* @DCB_CAP_DCBX_STATIC: for a non-host DCBX engine, indicates the engine
* supports static configuration (i.e no actual
* negotiation is performed negotiated parameters equal
* the initial configuration)
*
*/
#define DCB_CAP_DCBX_HOST 0x01
#define DCB_CAP_DCBX_LLD_MANAGED 0x02
#define DCB_CAP_DCBX_VER_CEE 0x04
#define DCB_CAP_DCBX_VER_IEEE 0x08
#define DCB_CAP_DCBX_STATIC 0x10
/**
* enum dcbnl_numtcs_attrs - number of traffic classes
*