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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 | /* * Copyright (c) 2017-2024 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #ifndef _SKYWALK_OS_SYSCTLS_H_ #define _SKYWALK_OS_SYSCTLS_H_ #if defined(PRIVATE) || defined(BSD_KERNEL_PRIVATE) #include <stdint.h> /* * X (type, field, default_value) * * Note: When defining X, be sure to use '...' such that adding fields will * not break building your project. See the use of SKMEM_SYSCTL_TCP_LIST * to define struct skmem_sysctl below for an example. */ #define SKMEM_SYSCTL_TCP_LIST \ X(int32_t, bg_target_qdelay, 40) \ X(int32_t, bg_allowed_increase, 8) \ X(int32_t, bg_tether_shift, 1) \ X(uint32_t, bg_ss_fltsz, 2) \ X(int32_t, use_newreno, 0) \ X(int32_t, cubic_tcp_friendliness, 0) \ X(int32_t, cubic_fast_convergence, 0) \ X(int32_t, cubic_use_minrtt, 0) \ X(int32_t, delayed_ack, 3) \ X(int32_t, recvbg, 0) \ X(int32_t, drop_synfin, 1) \ X(int32_t, slowlink_wsize, 8192) \ X(int32_t, maxseg_unacked, 8) \ X(int32_t, rfc3465, 1) \ X(int32_t, rfc3465_lim2, 1) \ X(int32_t, recv_allowed_iaj, 5) \ X(uint32_t, doautorcvbuf, 1) \ X(uint32_t, autorcvbufmax, 2 * 1024 * 1024) \ X(int32_t, rcvsspktcnt, 512) \ X(int32_t, path_mtu_discovery, 1) \ X(int32_t, local_slowstart_flightsize, 8) \ X(uint32_t, ecn_setup_percentage, 50) \ X(int32_t, ecn_initiate_out, 0) \ X(int32_t, ecn_negotiate_in, 0) \ X(int32_t, packetchain, 50) \ X(int32_t, socket_unlocked_on_output, 1) \ X(int32_t, min_iaj_win, 16) \ X(int32_t, acc_iaj_react_limit, 200) \ X(uint32_t, autosndbufinc, 8 * 1024) \ X(uint32_t, autosndbufmax, 2 * 1024 * 1024) \ X(uint32_t, rtt_recvbg, 1) \ X(uint32_t, recv_throttle_minwin, 16 * 1024) \ X(int32_t, enable_tlp, 1) \ X(int32_t, sack, 1) \ X(int32_t, sack_maxholes, 128) \ X(int32_t, sack_globalmaxholes, 65536) \ X(int32_t, mssdflt, 512) \ X(int32_t, v6mssdflt, 1024) \ X(int32_t, fastopen_backlog, 10) \ X(int32_t, fastopen, 0x3) \ X(int32_t, minmss, 216) \ X(int32_t, icmp_may_rst, 1) \ X(int32_t, rtt_min, 100) \ X(int32_t, rexmt_slop, 200) \ X(int32_t, randomize_ports, 0) \ X(int32_t, win_scale_factor, 3) \ X(int32_t, keepinit, 75 * 1000) \ X(int32_t, keepidle, 120 * 60 * 1000) \ X(int32_t, keepintvl, 75 * 1000) \ X(int32_t, keepcnt, 8) \ X(int32_t, msl, 15 * 1000) \ X(uint32_t, max_persist_timeout, 0) \ X(int32_t, always_keepalive, 0) \ X(uint32_t, timer_fastmode_idlemax, 10) \ X(int32_t, broken_peer_syn_rexmit_thres, 10) \ X(int32_t, pmtud_blackhole_detection, 1) \ X(uint32_t, pmtud_blackhole_mss, 1200) \ X(int32_t, sendspace, 1448*256) \ X(int32_t, recvspace, 1448*384) \ X(uint32_t, microuptime_init, 0) \ X(uint32_t, now_init, 0) \ X(uint32_t, challengeack_limit, 10) \ X(int32_t, do_rfc5961, 1) \ X(int32_t, init_rtt_from_cache, 1) \ X(uint32_t, autotunereorder, 1) \ X(uint32_t, do_ack_compression, 1) \ X(uint32_t, ack_compression_rate, 5) \ X(int32_t, do_better_lr, 1) \ X(int32_t, cubic_minor_fixes, 1) \ X(int32_t, cubic_rfc_compliant, 1) \ X(int32_t, aggressive_rcvwnd_inc, 1) \ X(int32_t, ack_strategy, 1) \ X(int32_t, flow_control_response, 1) \ X(int32_t, randomize_timestamps, 1) \ X(uint32_t, ledbat_plus_plus, 1) \ X(uint32_t, use_ledbat, 0) \ X(uint32_t, rledbat, 1) \ X(uint32_t, use_min_curr_rtt, 1) \ X(uint32_t, fin_timeout, 30) \ X(uint32_t, accurate_ecn, 0) \ X(int32_t, tso, 1) \ X(int32_t, awdl_rtobase, 100) \ X(int32_t, rack, 1) \ X(int32_t, l4s, 0) \ X(int32_t, link_heuristics_flags, 0) \ X(int32_t, link_heuristics_rto_min, 0) #define SKMEM_SYSCTL_KERN_IPC_LIST \ X(uint32_t, throttle_best_effort, 0) #define SKMEM_SYSCTL_TCP_HAS_DEFAULT_VALUES 1 #define SKMEM_SYSCTL_TCP_HAS_INIT_TIME 1 #define SKMEM_SYSCTL_TCP_HAS_LEDBAT_PLUS_PLUS 1 #define SKMEM_SYSCTL_TCP_HAS_RLEDBAT 1 #define SKMEM_SYSCTL_TCP_HAS_FIN_TIMEOUT 1 #define SKMEM_SYSCTL_TCP_HAS_ACC_ECN 1 #define SKMEM_SYSCTL_TCP_HAS_ACC_ECN_OPTION 1 #define SKMEM_SYSCTL_TCP_HAS_AWDL_RTOBASE 1 #define SKMEM_SYSCTL_TCP_HAS_RACK 1 #define SKMEM_SYSCTL_TCP_HAS_L4S 1 #define SKMEM_SYSCTL_TCP_HAS_LINK_HEURISTICS 1 /* * When adding a new type above, be sure to add a corresponding * printf format below. Clients use NW_SYSCTL_PRI_##type */ #define NW_SYSCTL_PRI_int32_t PRIi32 #define NW_SYSCTL_PRI_uint32_t PRIu32 #define SKMEM_SYSCTL_VERSION 3 typedef struct skmem_sysctl { uint32_t version; struct { #define X(type, field, ...) type field; SKMEM_SYSCTL_TCP_LIST #undef X } tcp; struct { struct { #define X(type, field, ...) type field; SKMEM_SYSCTL_KERN_IPC_LIST #undef X } ipc; } kern; } skmem_sysctl; /* * Skywalk logical link information * Output: Array of struct nx_llink_info entry (per logical link). */ #define SK_LLINK_LIST_SYSCTL "kern.skywalk.llink_list" #ifdef KERNEL /* * SYSCTL_SKMEM is infrastructure for keeping a shared memory region * in sync with a subset of syctl values in the networking stack. */ __BEGIN_DECLS extern uint32_t sk_sys_objsize; extern void skmem_sysctl_init(void); extern void *__sized_by(sk_sys_objsize) skmem_get_sysctls_obj(size_t *); extern int skmem_sysctl_handle_int(struct sysctl_oid *oidp, void *arg1, int arg2, struct sysctl_req *req); __END_DECLS #define SYSCTL_SKMEM_UPDATE_FIELD(field, value) do { \ skmem_sysctl *__single swptr = skmem_get_sysctls_obj(NULL); \ if (swptr) { \ swptr->field = value; \ } \ } while (0) /* * Danger - the void* cast below eliminates an alignment warning. * In this case it should be safe because offset should be an offset in to * the structure, so it should already be aligned. Nonetheless, there's * still a check above to ensure offset is aligned properly. */ #define SYSCTL_SKMEM_UPDATE_AT_OFFSET(offset, value) do { \ if (offset >= 0 && \ offset + sizeof (typeof(value)) <= sizeof (skmem_sysctl)) { \ skmem_sysctl *__single swptr = skmem_get_sysctls_obj(NULL); \ void *offp = (u_int8_t *__bidi_indexable) \ (skmem_sysctl *__bidi_indexable)swptr + offset; \ if (swptr && \ ((uintptr_t)offp) % _Alignof(typeof(value)) == 0) { \ *(typeof(value)*)offp = (value); \ } \ } \ } while (0) #define SYSCTL_SKMEM_INT(parent, oid, sysctl_name, access, ptr, offset, descr) \ SYSCTL_OID(parent, oid, sysctl_name, CTLTYPE_INT|access, \ ptr, offset, skmem_sysctl_handle_int, "I", descr); \ _Static_assert((__builtin_constant_p(ptr) || \ sizeof (*(ptr)) == sizeof (int)), "invalid ptr"); \ _Static_assert(offset % _Alignof(int) == 0, "invalid offset") #define SYSCTL_SKMEM_TCP_INT(oid, sysctl_name, access, variable_type, \ variable_name, initial_value, descr) \ variable_type variable_name = initial_value; \ SYSCTL_SKMEM_INT(_net_inet_tcp, oid, sysctl_name, access, \ &variable_name, offsetof(skmem_sysctl, tcp.sysctl_name), descr) #define SYSCTL_SKMEM_KERN_IPC_INT(oid, sysctl_name, access, variable_type, \ variable_name, initial_value, descr) \ variable_type variable_name = initial_value; \ SYSCTL_SKMEM_INT(_kern_ipc, oid, sysctl_name, access, \ &variable_name, offsetof(skmem_sysctl, kern.ipc.sysctl_name), descr) #endif /* KERNEL */ #endif /* PRIVATE || BSD_KERNEL_PRIVATE */ #endif /* _SKYWALK_OS_SYSCTLS_H_ */ |