1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
# Library configuration options for Ouroboros
# Options affecting libouroboros-common, libouroboros-dev, libouroboros-irm
# Flow limits
set(SYS_MAX_FLOWS 10240 CACHE STRING
"Maximum number of total flows for this system")
set(PROC_MAX_FLOWS 4096 CACHE STRING
"Maximum number of flows in an application")
set(PROC_RES_FDS 64 CACHE STRING
"Number of reserved flow descriptors per application")
set(PROC_MAX_FQUEUES 32 CACHE STRING
"Maximum number of flow sets per application")
# Threading
if(NOT APPLE)
set(PTHREAD_COND_CLOCK "CLOCK_MONOTONIC" CACHE STRING
"Clock to use for condition variable timing")
else()
set(PTHREAD_COND_CLOCK "CLOCK_REALTIME" CACHE INTERNAL
"Clock to use for condition variable timing")
endif()
# Timeouts
set(SOCKET_TIMEOUT 500 CACHE STRING
"Default timeout for responses from IPCPs (ms)")
# QoS settings
set(QOS_DISABLE_CRC TRUE CACHE BOOL
"Ignores ber setting on all QoS cubes")
include(utils/CPUUtils)
detect_pclmul()
detect_pmull()
if(HAVE_PCLMUL)
message(STATUS "CRC-64/NVMe backend: PCLMUL (x86 SSE4.1+PCLMUL)")
elseif(HAVE_PMULL)
message(STATUS "CRC-64/NVMe backend: PMULL (aarch64 crypto)")
else()
message(STATUS "CRC-64/NVMe backend: byte table (no acceleration)")
endif()
# Delta-t protocol timers (Watson bound: 3*MPL + A + R).
# MPL is reported per IPCP (IPCP_*_MPL); A and R are FRCT-wide.
set(DELTA_T_ACK 1000 CACHE STRING
"Maximum time to acknowledge a packet (ms)")
set(DELTA_T_RTX 30000 CACHE STRING
"Maximum time to retransmit a packet (ms)")
# FRCT configuration
set(FRCT_REORDER_QUEUE_SIZE 128 CACHE STRING
"Size of the reordering queue, must be a power of 2")
set(FRCT_START_WINDOW 128 CACHE STRING
"Start window, must be a power of 2")
set(FRCT_LINUX_RTT_ESTIMATOR TRUE CACHE BOOL
"Use Linux RTT estimator formula instead of the TCP RFC formula")
set(FRCT_RTO_MDEV_MULTIPLIER 2 CACHE STRING
"Multiplier for deviation term in the RTO: RTO = sRTT + (mdev << X)")
set(FRCT_RTO_INC_FACTOR 0 CACHE STRING
"Divisor for RTO increase after timeout: RTO += RTX >> X, 0: Karn/Partridge")
set(FRCT_RTO_MIN 250 CACHE STRING
"Hard floor for Retransmission Timeout (RTO) for FRCT (us)")
set(FRCT_TICK_TIME 5000 CACHE STRING
"Tick time for FRCT activity (retransmission, acknowledgments) (us)")
set(FRCT_DEBUG_STDOUT FALSE CACHE BOOL
"Print FRCT final counters to stdout at flow teardown")
# Retransmission (RXM) configuration
set(RXM_MIN_RESOLUTION 20 CACHE STRING
"Minimum retransmission delay (ns), as a power to 2")
set(RXM_WHEEL_MULTIPLIER 4 CACHE STRING
"Factor for retransmission wheel levels as a power to 2")
set(RXM_WHEEL_LEVELS 3 CACHE STRING
"Number of levels in the retransmission wheel")
set(RXM_WHEEL_SLOTS_PER_LEVEL 256 CACHE STRING
"Number of slots per level in the retransmission wheel, must be a power of 2")
# Acknowledgment wheel configuration
set(ACK_WHEEL_SLOTS 256 CACHE STRING
"Number of slots in the acknowledgment wheel, must be a power of 2")
set(ACK_WHEEL_RESOLUTION 18 CACHE STRING
"Minimum acknowledgment delay (ns), as a power to 2")
# Thread pool manager (TPM) debugging
set(TPM_DEBUG_REPORT_INTERVAL 0 CACHE STRING
"Interval at wich the TPM will report long running threads (s), 0 disables")
set(TPM_DEBUG_ABORT_TIMEOUT 0 CACHE STRING
"TPM abort process after a thread reaches this timeout (s), 0 disables")
# Encryption
set(KEY_LEAF_BITS 20 CACHE STRING
"Packets per leaf key as a power of two (2^20 = AEAD-safe default)")
set(KEY_NODE_BITS 6 CACHE STRING
"Leaf keys per node key, power of two (2^6 = 64; leak compartment)")
set(KEY_NODE_COUNT 128 CACHE STRING
"Node keys per batch (N); <= 4096, the 12-bit on-wire node index")
set(KEY_REKEY_WATERMARK 4 CACHE STRING
"Re-key when this many node keys remain; 0 disables the count trigger")
set(KEY_REPLAY_WINDOW 2048 CACHE STRING
"RX replay window in packets; power of two, >= 128")
set(KEY_REKEY_WM_CHECK_BITS 16 CACHE STRING
"Re-key watermark is consulted once per 2^n flow writes")
if(NOT KEY_REPLAY_WINDOW MATCHES "^[0-9]+$")
message(FATAL_ERROR "KEY_REPLAY_WINDOW must be a positive integer")
endif()
math(EXPR _krw_p2 "${KEY_REPLAY_WINDOW} & (${KEY_REPLAY_WINDOW} - 1)")
if(KEY_REPLAY_WINDOW LESS 128 OR NOT _krw_p2 EQUAL 0)
message(FATAL_ERROR "KEY_REPLAY_WINDOW must be a power of two >= 128")
endif()
# Re-key must finish within its lead window - KEY_REKEY_WATERMARK node keys
# worth of packets - before the batch exhausts and TX fails closed. dev.c only
# evaluates the watermark once per FLOW_WM_CHECK writes, so a lead below ~2x
# that leaves a high-rate flow no room to complete the exchange. Production
# defaults are vast; this guards under-sized (test) geometries.
if(KEY_REKEY_WATERMARK GREATER 0)
math(EXPR _rk_wm_check "1 << ${KEY_REKEY_WM_CHECK_BITS}")
math(EXPR _rk_lead
"${KEY_REKEY_WATERMARK} << (${KEY_LEAF_BITS} + ${KEY_NODE_BITS})")
math(EXPR _rk_min "2 * ${_rk_wm_check}")
if(_rk_lead LESS _rk_min)
message(WARNING
"Re-key lead is ${_rk_lead} packets vs the watermark check interval "
"${_rk_wm_check}; a high-rate flow may exhaust its key batch before the "
"re-key completes (TX fails closed until it does). Raise KEY_LEAF_BITS, "
"KEY_NODE_BITS, or KEY_REKEY_WATERMARK.")
endif()
endif()
# Flow statistics (requires FUSE)
if(HAVE_FUSE)
set(PROC_FLOW_STATS TRUE CACHE BOOL
"Enable flow statistics tracking for application flows")
if(PROC_FLOW_STATS)
message(STATUS "Application flow statistics enabled")
else()
message(STATUS "Application flow statistics disabled")
endif()
endif()
|
