Differential D19878 Diff 56070 netinet/tcp_stacks/tcp_rack.h

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netinet/tcp_stacks/tcp_rack.h

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	#ifndef _NETINET_TCP_RACK_H_	#ifndef _NETINET_TCP_RACK_H_
	#define _NETINET_TCP_RACK_H_	#define _NETINET_TCP_RACK_H_

	#define RACK_ACKED 0x0001/* The remote endpoint acked this */	#define RACK_ACKED 0x0001/* The remote endpoint acked this */
	#define RACK_TO_MIXED 0x0002/* A timeout occured that mixed the send order */	#define RACK_TO_MIXED 0x0002/* A timeout occured that mixed the send order */
	#define RACK_DEFERRED 0x0004/* We can't use this for RTT calc */	#define RACK_DEFERRED 0x0004/* We can't use this for RTT calc */
	#define RACK_OVERMAX 0x0008/* We have more retran's then we can fit */	#define RACK_OVERMAX 0x0008/* We have more retran's then we can fit */
	#define RACK_SACK_PASSED 0x0010/* A sack was done above this block */	#define RACK_SACK_PASSED 0x0010/* A sack was done above this block */
	#define RACK_WAS_SACKPASS 0x0020/* We retransmitted due to SACK pass */	#define RACK_WAS_SACKPASS 0x0020/* We retransmitted due to SACK pass */
	#define RACK_HAS_FIN 0x0040/* segment is sent with fin */	#define RACK_HAS_FIN 0x0040/* segment is sent with fin */
	#define RACK_TLP 0x0080/* segment sent as tail-loss-probe */	#define RACK_TLP 0x0080/* segment sent as tail-loss-probe */
		#define RACK_RWND_COLLAPSED 0x0100/* The peer collapsed the rwnd on the segment */
	#define RACK_NUM_OF_RETRANS 3	#define RACK_NUM_OF_RETRANS 3

	#define RACK_INITIAL_RTO 1000 /* 1 second in milli seconds */	#define RACK_INITIAL_RTO 1000 /* 1 second in milli seconds */
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	uint32_t r_rtr_bytes; /* How many bytes have been retransmitted */	uint32_t r_rtr_bytes; /* How many bytes have been retransmitted */
	uint16_t r_rtr_cnt; /* Retran count, index this -1 to get time	uint16_t r_rtr_cnt; /* Retran count, index this -1 to get time
	* sent */	* sent */
	uint8_t r_flags; /* Flags as defined above */	uint16_t r_flags; /* Flags as defined above */
	uint8_t r_sndcnt; /* Retran count, not limited by	uint8_t r_sndcnt; /* Retran count, not limited by
	* RACK_NUM_OF_RETRANS */	* RACK_NUM_OF_RETRANS */
	uint8_t r_in_tmap; /* Flag to see if its in the r_tnext array */	uint8_t r_in_tmap; /* Flag to see if its in the r_tnext array */
	uint8_t r_resv[3];	uint8_t r_resv[2];
	};	};

	TAILQ_HEAD(rack_head, rack_sendmap);	TAILQ_HEAD(rack_head, rack_sendmap);
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	uint64_t rack_no_timer_in_hpts;	uint64_t rack_no_timer_in_hpts;
	uint64_t tcp_rack_min_pace_seg;	uint64_t tcp_rack_min_pace_seg;
	uint64_t tcp_rack_min_pace;	uint64_t tcp_rack_min_pace;
		uint64_t tcp_rack_cheat;
	};	};

	#define TLP_USE_ID 1 /* Internet draft behavior */	#define TLP_USE_ID 1 /* Internet draft behavior */
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	* b) Locked by the hpts-mutex	* b) Locked by the hpts-mutex
	*	*
	*/	*/
		#define RACK_GP_HIST 4 /* How much goodput history do we maintain? */

	struct rack_control {	struct rack_control {
	/* Second cache line 0x40 from tcp_rack */	/* Second cache line 0x40 from tcp_rack */
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	struct sack_filter rack_sf;	struct sack_filter rack_sf;
	/* Cache line split 0x140 */	/* Cache line split 0x140 */
	/* Flags for various things */	/* Flags for various things */
		uint32_t rc_pace_max_segs;
		uint32_t rc_pace_min_segs;
		uint32_t rc_high_rwnd;
	struct rack_rtt_sample rack_rs;	struct rack_rtt_sample rack_rs;
		uint32_t rc_tlp_rxt_last_time;
		uint32_t rc_gp_history[RACK_GP_HIST];
	uint32_t rc_tlp_threshold; /* Socket option value Lock(a) */	uint32_t rc_tlp_threshold; /* Socket option value Lock(a) */
	uint16_t rc_early_recovery_segs; /* Socket option value Lock(a) */	uint16_t rc_early_recovery_segs; /* Socket option value Lock(a) */
	uint16_t rc_reorder_shift; /* Socket option value Lock(a) */	uint16_t rc_reorder_shift; /* Socket option value Lock(a) */
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	uint8_t rc_early_recovery; /* Socket option value Lock(a) */	uint8_t rc_early_recovery; /* Socket option value Lock(a) */
	uint8_t rc_prr_sendalot;/* Socket option value Lock(a) */	uint8_t rc_prr_sendalot;/* Socket option value Lock(a) */
	uint8_t rc_min_to; /* Socket option value Lock(a) */	uint8_t rc_min_to; /* Socket option value Lock(a) */
	uint8_t rc_prr_inc_var; /* Socket option value Lock(a) */
	uint8_t rc_tlp_rtx_out; /* This is TLPRtxOut in the draft */	uint8_t rc_tlp_rtx_out; /* This is TLPRtxOut in the draft */
	uint8_t rc_rate_sample_method;	uint8_t rc_rate_sample_method;
		uint8_t rc_gp_hist_idx: 7,
		rc_gp_hist_filled: 1;

	};	};

	#ifdef _KERNEL	#ifdef _KERNEL
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	rc_last_pto_set : 1, /* XXX not used */	rc_last_pto_set : 1, /* XXX not used */
	rc_tlp_in_progress : 1,	rc_tlp_in_progress : 1,
	rc_always_pace : 1, /* Socket option value Lock(a) */	rc_always_pace : 1, /* Socket option value Lock(a) */
	rc_timer_up : 1; /* The rack timer is up flag Lock(a) */	tlp_timer_up : 1; /* The tlp timer is up flag Lock(a) */
	uint8_t r_idle_reduce_largest : 1,	uint8_t r_enforce_min_pace : 2,
	r_enforce_min_pace : 2,	rc_has_collapsed : 1,
	r_min_pace_seg_thresh : 5;	r_xxx_min_pace_seg_thresh : 5;
	uint8_t rack_tlp_threshold_use;	uint8_t rack_tlp_threshold_use;
	uint8_t rc_allow_data_af_clo: 1,	uint8_t rc_allow_data_af_clo: 1,
	delayed_ack : 1,	delayed_ack : 1,
	rc_avail : 6;	set_pacing_done_a_iw : 1,
	uint8_t r_resv[2]; /* Fill to cache line boundary */	use_rack_cheat : 1,
		rc_avail : 4;
		uint16_t rack_per_of_gp;
	/* Cache line 2 0x40 */	/* Cache line 2 0x40 */
	struct rack_control r_ctl;	struct rack_control r_ctl;
	} __aligned(CACHE_LINE_SIZE);	} __aligned(CACHE_LINE_SIZE);
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