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8e688d9c DH |
1 | /* Miscellaneous bits |
2 | * | |
3 | * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public Licence | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the Licence, or (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/kernel.h> | |
13 | #include <net/sock.h> | |
14 | #include <net/af_rxrpc.h> | |
15 | #include "ar-internal.h" | |
16 | ||
0e119b41 DH |
17 | /* |
18 | * The maximum listening backlog queue size that may be set on a socket by | |
19 | * listen(). | |
20 | */ | |
21 | unsigned int rxrpc_max_backlog __read_mostly = 10; | |
22 | ||
8e688d9c DH |
23 | /* |
24 | * How long to wait before scheduling ACK generation after seeing a | |
25 | * packet with RXRPC_REQUEST_ACK set (in jiffies). | |
26 | */ | |
27 | unsigned int rxrpc_requested_ack_delay = 1; | |
28 | ||
29 | /* | |
30 | * How long to wait before scheduling an ACK with subtype DELAY (in jiffies). | |
31 | * | |
32 | * We use this when we've received new data packets. If those packets aren't | |
33 | * all consumed within this time we will send a DELAY ACK if an ACK was not | |
34 | * requested to let the sender know it doesn't need to resend. | |
35 | */ | |
36 | unsigned int rxrpc_soft_ack_delay = 1 * HZ; | |
37 | ||
38 | /* | |
39 | * How long to wait before scheduling an ACK with subtype IDLE (in jiffies). | |
40 | * | |
41 | * We use this when we've consumed some previously soft-ACK'd packets when | |
42 | * further packets aren't immediately received to decide when to send an IDLE | |
43 | * ACK let the other end know that it can free up its Tx buffer space. | |
44 | */ | |
45 | unsigned int rxrpc_idle_ack_delay = 0.5 * HZ; | |
46 | ||
47 | /* | |
48 | * Receive window size in packets. This indicates the maximum number of | |
49 | * unconsumed received packets we're willing to retain in memory. Once this | |
50 | * limit is hit, we should generate an EXCEEDS_WINDOW ACK and discard further | |
51 | * packets. | |
52 | */ | |
75e42126 DH |
53 | unsigned int rxrpc_rx_window_size = RXRPC_INIT_RX_WINDOW_SIZE; |
54 | #if (RXRPC_RXTX_BUFF_SIZE - 1) < RXRPC_INIT_RX_WINDOW_SIZE | |
55 | #error Need to reduce RXRPC_INIT_RX_WINDOW_SIZE | |
56 | #endif | |
8e688d9c DH |
57 | |
58 | /* | |
59 | * Maximum Rx MTU size. This indicates to the sender the size of jumbo packet | |
60 | * made by gluing normal packets together that we're willing to handle. | |
61 | */ | |
62 | unsigned int rxrpc_rx_mtu = 5692; | |
63 | ||
64 | /* | |
65 | * The maximum number of fragments in a received jumbo packet that we tell the | |
66 | * sender that we're willing to handle. | |
67 | */ | |
68 | unsigned int rxrpc_rx_jumbo_max = 4; | |
69 | ||
0b58b8a1 | 70 | /* |
50235c4b | 71 | * Time till packet resend (in milliseconds). |
0b58b8a1 | 72 | */ |
50235c4b | 73 | unsigned int rxrpc_resend_timeout = 4 * 1000; |
0b58b8a1 | 74 | |
5b3e87f1 | 75 | const char *const rxrpc_pkts[] = { |
8e688d9c DH |
76 | "?00", |
77 | "DATA", "ACK", "BUSY", "ABORT", "ACKALL", "CHALL", "RESP", "DEBUG", | |
78 | "?09", "?10", "?11", "?12", "VERSION", "?14", "?15" | |
79 | }; | |
80 | ||
81 | const s8 rxrpc_ack_priority[] = { | |
82 | [0] = 0, | |
83 | [RXRPC_ACK_DELAY] = 1, | |
84 | [RXRPC_ACK_REQUESTED] = 2, | |
85 | [RXRPC_ACK_IDLE] = 3, | |
8e83134d DH |
86 | [RXRPC_ACK_DUPLICATE] = 4, |
87 | [RXRPC_ACK_OUT_OF_SEQUENCE] = 5, | |
88 | [RXRPC_ACK_EXCEEDS_WINDOW] = 6, | |
89 | [RXRPC_ACK_NOSPACE] = 7, | |
90 | [RXRPC_ACK_PING_RESPONSE] = 8, | |
91 | [RXRPC_ACK_PING] = 9, | |
8e688d9c DH |
92 | }; |
93 | ||
9c7ad434 DH |
94 | const char const rxrpc_ack_names[RXRPC_ACK__INVALID + 1][4] = { |
95 | "---", "REQ", "DUP", "OOS", "WIN", "MEM", "PNG", "PNR", "DLY", | |
96 | "IDL", "-?-" | |
97 | }; | |
363deeab | 98 | |
71f3ca40 DH |
99 | const char rxrpc_skb_traces[rxrpc_skb__nr_trace][7] = { |
100 | [rxrpc_skb_rx_cleaned] = "Rx CLN", | |
101 | [rxrpc_skb_rx_freed] = "Rx FRE", | |
102 | [rxrpc_skb_rx_got] = "Rx GOT", | |
103 | [rxrpc_skb_rx_lost] = "Rx *L*", | |
104 | [rxrpc_skb_rx_received] = "Rx RCV", | |
105 | [rxrpc_skb_rx_purged] = "Rx PUR", | |
106 | [rxrpc_skb_rx_rotated] = "Rx ROT", | |
107 | [rxrpc_skb_rx_seen] = "Rx SEE", | |
108 | [rxrpc_skb_tx_cleaned] = "Tx CLN", | |
109 | [rxrpc_skb_tx_freed] = "Tx FRE", | |
110 | [rxrpc_skb_tx_got] = "Tx GOT", | |
111 | [rxrpc_skb_tx_lost] = "Tx *L*", | |
112 | [rxrpc_skb_tx_new] = "Tx NEW", | |
113 | [rxrpc_skb_tx_rotated] = "Tx ROT", | |
114 | [rxrpc_skb_tx_seen] = "Tx SEE", | |
115 | }; | |
116 | ||
363deeab DH |
117 | const char rxrpc_conn_traces[rxrpc_conn__nr_trace][4] = { |
118 | [rxrpc_conn_new_client] = "NWc", | |
119 | [rxrpc_conn_new_service] = "NWs", | |
120 | [rxrpc_conn_queued] = "QUE", | |
121 | [rxrpc_conn_seen] = "SEE", | |
122 | [rxrpc_conn_got] = "GOT", | |
123 | [rxrpc_conn_put_client] = "PTc", | |
124 | [rxrpc_conn_put_service] = "PTs", | |
125 | }; | |
126 | ||
127 | const char rxrpc_client_traces[rxrpc_client__nr_trace][7] = { | |
128 | [rxrpc_client_activate_chans] = "Activa", | |
129 | [rxrpc_client_alloc] = "Alloc ", | |
130 | [rxrpc_client_chan_activate] = "ChActv", | |
131 | [rxrpc_client_chan_disconnect] = "ChDisc", | |
132 | [rxrpc_client_chan_pass] = "ChPass", | |
133 | [rxrpc_client_chan_unstarted] = "ChUnst", | |
134 | [rxrpc_client_cleanup] = "Clean ", | |
135 | [rxrpc_client_count] = "Count ", | |
136 | [rxrpc_client_discard] = "Discar", | |
137 | [rxrpc_client_duplicate] = "Duplic", | |
138 | [rxrpc_client_exposed] = "Expose", | |
139 | [rxrpc_client_replace] = "Replac", | |
140 | [rxrpc_client_to_active] = "->Actv", | |
141 | [rxrpc_client_to_culled] = "->Cull", | |
142 | [rxrpc_client_to_idle] = "->Idle", | |
143 | [rxrpc_client_to_inactive] = "->Inac", | |
144 | [rxrpc_client_to_waiting] = "->Wait", | |
145 | [rxrpc_client_uncount] = "Uncoun", | |
146 | }; | |
a124fe3e DH |
147 | |
148 | const char rxrpc_transmit_traces[rxrpc_transmit__nr_trace][4] = { | |
149 | [rxrpc_transmit_wait] = "WAI", | |
150 | [rxrpc_transmit_queue] = "QUE", | |
a124fe3e DH |
151 | [rxrpc_transmit_queue_last] = "QLS", |
152 | [rxrpc_transmit_rotate] = "ROT", | |
70790dbe DH |
153 | [rxrpc_transmit_rotate_last] = "RLS", |
154 | [rxrpc_transmit_await_reply] = "AWR", | |
a124fe3e DH |
155 | [rxrpc_transmit_end] = "END", |
156 | }; | |
58dc63c9 DH |
157 | |
158 | const char rxrpc_receive_traces[rxrpc_receive__nr_trace][4] = { | |
159 | [rxrpc_receive_incoming] = "INC", | |
160 | [rxrpc_receive_queue] = "QUE", | |
161 | [rxrpc_receive_queue_last] = "QLS", | |
162 | [rxrpc_receive_front] = "FRN", | |
163 | [rxrpc_receive_rotate] = "ROT", | |
164 | [rxrpc_receive_end] = "END", | |
165 | }; | |
84997905 DH |
166 | |
167 | const char rxrpc_recvmsg_traces[rxrpc_recvmsg__nr_trace][5] = { | |
168 | [rxrpc_recvmsg_enter] = "ENTR", | |
169 | [rxrpc_recvmsg_wait] = "WAIT", | |
170 | [rxrpc_recvmsg_dequeue] = "DEQU", | |
171 | [rxrpc_recvmsg_hole] = "HOLE", | |
172 | [rxrpc_recvmsg_next] = "NEXT", | |
173 | [rxrpc_recvmsg_cont] = "CONT", | |
174 | [rxrpc_recvmsg_full] = "FULL", | |
175 | [rxrpc_recvmsg_data_return] = "DATA", | |
176 | [rxrpc_recvmsg_terminal] = "TERM", | |
177 | [rxrpc_recvmsg_to_be_accepted] = "TBAC", | |
178 | [rxrpc_recvmsg_return] = "RETN", | |
179 | }; | |
cf1a6474 DH |
180 | |
181 | const char rxrpc_rtt_tx_traces[rxrpc_rtt_tx__nr_trace][5] = { | |
182 | [rxrpc_rtt_tx_ping] = "PING", | |
50235c4b | 183 | [rxrpc_rtt_tx_data] = "DATA", |
cf1a6474 DH |
184 | }; |
185 | ||
186 | const char rxrpc_rtt_rx_traces[rxrpc_rtt_rx__nr_trace][5] = { | |
187 | [rxrpc_rtt_rx_ping_response] = "PONG", | |
50235c4b | 188 | [rxrpc_rtt_rx_requested_ack] = "RACK", |
cf1a6474 | 189 | }; |
fc7ab6d2 DH |
190 | |
191 | const char rxrpc_timer_traces[rxrpc_timer__nr_trace][8] = { | |
192 | [rxrpc_timer_begin] = "Begin ", | |
193 | [rxrpc_timer_expired] = "*EXPR*", | |
dd7c1ee5 | 194 | [rxrpc_timer_init_for_reply] = "IniRpl", |
fc7ab6d2 DH |
195 | [rxrpc_timer_set_for_ack] = "SetAck", |
196 | [rxrpc_timer_set_for_send] = "SetTx ", | |
197 | [rxrpc_timer_set_for_resend] = "SetRTx", | |
198 | }; | |
9c7ad434 DH |
199 | |
200 | const char rxrpc_propose_ack_traces[rxrpc_propose_ack__nr_trace][8] = { | |
0d967960 | 201 | [rxrpc_propose_ack_client_tx_end] = "ClTxEnd", |
9c7ad434 | 202 | [rxrpc_propose_ack_input_data] = "DataIn ", |
57494343 | 203 | [rxrpc_propose_ack_ping_for_lost_ack] = "LostAck", |
0d967960 | 204 | [rxrpc_propose_ack_ping_for_lost_reply] = "LostRpl", |
9c7ad434 DH |
205 | [rxrpc_propose_ack_ping_for_params] = "Params ", |
206 | [rxrpc_propose_ack_respond_to_ack] = "Rsp2Ack", | |
207 | [rxrpc_propose_ack_respond_to_ping] = "Rsp2Png", | |
208 | [rxrpc_propose_ack_retry_tx] = "RetryTx", | |
805b21b9 | 209 | [rxrpc_propose_ack_rotate_rx] = "RxAck ", |
9c7ad434 DH |
210 | [rxrpc_propose_ack_terminal_ack] = "ClTerm ", |
211 | }; | |
212 | ||
213 | const char *const rxrpc_propose_ack_outcomes[rxrpc_propose_ack__nr_outcomes] = { | |
214 | [rxrpc_propose_ack_use] = "", | |
215 | [rxrpc_propose_ack_update] = " Update", | |
216 | [rxrpc_propose_ack_subsume] = " Subsume", | |
217 | }; | |
57494343 DH |
218 | |
219 | const char rxrpc_congest_modes[NR__RXRPC_CONGEST_MODES][10] = { | |
220 | [RXRPC_CALL_SLOW_START] = "SlowStart", | |
221 | [RXRPC_CALL_CONGEST_AVOIDANCE] = "CongAvoid", | |
222 | [RXRPC_CALL_PACKET_LOSS] = "PktLoss ", | |
223 | [RXRPC_CALL_FAST_RETRANSMIT] = "FastReTx ", | |
224 | }; | |
225 | ||
226 | const char rxrpc_congest_changes[rxrpc_congest__nr_change][9] = { | |
227 | [rxrpc_cong_begin_retransmission] = " Retrans", | |
228 | [rxrpc_cong_cleared_nacks] = " Cleared", | |
229 | [rxrpc_cong_new_low_nack] = " NewLowN", | |
230 | [rxrpc_cong_no_change] = "", | |
231 | [rxrpc_cong_progress] = " Progres", | |
232 | [rxrpc_cong_retransmit_again] = " ReTxAgn", | |
233 | [rxrpc_cong_rtt_window_end] = " RttWinE", | |
234 | [rxrpc_cong_saw_nack] = " SawNack", | |
235 | }; |