include/uapi/linux/dcbnl.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/dcbnl.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/dcbnl.h
Extension
.h
Size
25571 bytes
Lines
780
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct ieee_ets {
	__u8	willing;
	__u8	ets_cap;
	__u8	cbs;
	__u8	tc_tx_bw[IEEE_8021QAZ_MAX_TCS];
	__u8	tc_rx_bw[IEEE_8021QAZ_MAX_TCS];
	__u8	tc_tsa[IEEE_8021QAZ_MAX_TCS];
	__u8	prio_tc[IEEE_8021QAZ_MAX_TCS];
	__u8	tc_reco_bw[IEEE_8021QAZ_MAX_TCS];
	__u8	tc_reco_tsa[IEEE_8021QAZ_MAX_TCS];
	__u8	reco_prio_tc[IEEE_8021QAZ_MAX_TCS];
};

/* This structure contains rate limit extension to the IEEE 802.1Qaz ETS
 * managed object.
 * Values are 64 bits long and specified in Kbps to enable usage over both
 * slow and very fast networks.
 *
 * @tc_maxrate: maximal tc tx bandwidth indexed by traffic class
 */
struct ieee_maxrate {
	__u64	tc_maxrate[IEEE_8021QAZ_MAX_TCS];
};

enum dcbnl_cndd_states {
	DCB_CNDD_RESET = 0,
	DCB_CNDD_EDGE,
	DCB_CNDD_INTERIOR,
	DCB_CNDD_INTERIOR_READY,
};

/* This structure contains the IEEE 802.1Qau QCN managed object.
 *
 *@rpg_enable: enable QCN RP
 *@rppp_max_rps: maximum number of RPs allowed for this CNPV on this port
 *@rpg_time_reset: time between rate increases if no CNMs received.
 *		   given in u-seconds
 *@rpg_byte_reset: transmitted data between rate increases if no CNMs received.
 *		   given in Bytes
 *@rpg_threshold: The number of times rpByteStage or rpTimeStage can count
 *		   before RP rate control state machine advances states
 *@rpg_max_rate: the maxinun rate, in Mbits per second,
 *		 at which an RP can transmit
 *@rpg_ai_rate: The rate, in Mbits per second,
 *		used to increase rpTargetRate in the RPR_ACTIVE_INCREASE
 *@rpg_hai_rate: The rate, in Mbits per second,
 *		 used to increase rpTargetRate in the RPR_HYPER_INCREASE state
 *@rpg_gd: Upon CNM receive, flow rate is limited to (Fb/Gd)*CurrentRate.
 *	   rpgGd is given as log2(Gd), where Gd may only be powers of 2
 *@rpg_min_dec_fac: The minimum factor by which the current transmit rate
 *		    can be changed by reception of a CNM.
 *		    value is given as percentage (1-100)
 *@rpg_min_rate: The minimum value, in bits per second, for rate to limit
 *@cndd_state_machine: The state of the congestion notification domain
 *		       defense state machine, as defined by IEEE 802.3Qau
 *		       section 32.1.1. In the interior ready state,
 *		       the QCN capable hardware may add CN-TAG TLV to the
 *		       outgoing traffic, to specifically identify outgoing
 *		       flows.
 */

struct ieee_qcn {
	__u8 rpg_enable[IEEE_8021QAZ_MAX_TCS];
	__u32 rppp_max_rps[IEEE_8021QAZ_MAX_TCS];
	__u32 rpg_time_reset[IEEE_8021QAZ_MAX_TCS];
	__u32 rpg_byte_reset[IEEE_8021QAZ_MAX_TCS];
	__u32 rpg_threshold[IEEE_8021QAZ_MAX_TCS];
	__u32 rpg_max_rate[IEEE_8021QAZ_MAX_TCS];
	__u32 rpg_ai_rate[IEEE_8021QAZ_MAX_TCS];
	__u32 rpg_hai_rate[IEEE_8021QAZ_MAX_TCS];
	__u32 rpg_gd[IEEE_8021QAZ_MAX_TCS];
	__u32 rpg_min_dec_fac[IEEE_8021QAZ_MAX_TCS];
	__u32 rpg_min_rate[IEEE_8021QAZ_MAX_TCS];
	__u32 cndd_state_machine[IEEE_8021QAZ_MAX_TCS];
};

/* This structure contains the IEEE 802.1Qau QCN statistics.
 *
 *@rppp_rp_centiseconds: the number of RP-centiseconds accumulated
 *			 by RPs at this priority level on this Port
 *@rppp_created_rps: number of active RPs(flows) that react to CNMs
 */

struct ieee_qcn_stats {
	__u64 rppp_rp_centiseconds[IEEE_8021QAZ_MAX_TCS];
	__u32 rppp_created_rps[IEEE_8021QAZ_MAX_TCS];
};

/* This structure contains the IEEE 802.1Qaz PFC managed object
 *

Annotation

Implementation Notes