| 1 | |
| 2 | * Copyright (c) 2006 Oracle. All rights reserved.
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| 3 | *
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| 4 | * This software is available to you under a choice of one of two
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| 5 | * licenses. You may choose to be licensed under the terms of the GNU
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| 6 | * General Public License (GPL) Version 2, available from the file
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| 7 | * COPYING in the main directory of this source tree, or the
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| 8 | * OpenIB.org BSD license below:
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| 9 | *
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| 10 | * Redistribution and use in source and binary forms, with or
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| 11 | * without modification, are permitted provided that the following
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| 12 | * conditions are met:
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| 13 | *
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| 14 | * - Redistributions of source code must retain the above
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| 15 | * copyright notice, this list of conditions and the following
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| 16 | * disclaimer.
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| 17 | *
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| 18 | * - Redistributions in binary form must reproduce the above
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| 19 | * copyright notice, this list of conditions and the following
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| 20 | * disclaimer in the documentation and/or other materials
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| 21 | * provided with the distribution.
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| 22 | *
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| 23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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| 24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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| 25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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| 26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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| 27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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| 28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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| 29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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| 30 | * SOFTWARE.
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| 31 | *
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| 32 |
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| 33 | #include <linux/kernel.h>
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| 34 | #include <linux/sysctl.h>
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| 35 | #include <linux/proc_fs.h>
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| 36 |
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| 37 | #include "rds.h"
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| 38 |
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| 39 | static struct ctl_table_header *rds_sysctl_reg_table;
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| 40 |
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| 41 | static unsigned long rds_sysctl_reconnect_min = 1;
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| 42 | static unsigned long rds_sysctl_reconnect_max = ~0UL;
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| 43 |
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| 44 | unsigned long rds_sysctl_reconnect_min_jiffies;
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| 45 | unsigned long rds_sysctl_reconnect_max_jiffies = HZ;
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| 46 |
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| 47 | unsigned int rds_sysctl_max_unacked_packets = 8;
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| 48 | unsigned int rds_sysctl_max_unacked_bytes = (16 << 20);
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| 49 |
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| 50 | unsigned int rds_sysctl_ping_enable = 1;
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| 51 |
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| 52 | static struct ctl_table rds_sysctl_rds_table[] = {
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| 53 | {
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| 54 | .procname = "reconnect_min_delay_ms",
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| 55 | .data = &rds_sysctl_reconnect_min_jiffies,
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| 56 | .maxlen = sizeof(unsigned long),
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| 57 | .mode = 0644,
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| 58 | .proc_handler = proc_doulongvec_ms_jiffies_minmax,
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| 59 | .extra1 = &rds_sysctl_reconnect_min,
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| 60 | .extra2 = &rds_sysctl_reconnect_max_jiffies,
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| 61 | },
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| 62 | {
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| 63 | .procname = "reconnect_max_delay_ms",
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| 64 | .data = &rds_sysctl_reconnect_max_jiffies,
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| 65 | .maxlen = sizeof(unsigned long),
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| 66 | .mode = 0644,
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| 67 | .proc_handler = proc_doulongvec_ms_jiffies_minmax,
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| 68 | .extra1 = &rds_sysctl_reconnect_min_jiffies,
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| 69 | .extra2 = &rds_sysctl_reconnect_max,
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| 70 | },
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| 71 | {
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| 72 | .procname = "max_unacked_packets",
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| 73 | .data = &rds_sysctl_max_unacked_packets,
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| 74 | .maxlen = sizeof(int),
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| 75 | .mode = 0644,
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| 76 | .proc_handler = proc_dointvec,
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| 77 | },
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| 78 | {
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| 79 | .procname = "max_unacked_bytes",
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| 80 | .data = &rds_sysctl_max_unacked_bytes,
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| 81 | .maxlen = sizeof(int),
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| 82 | .mode = 0644,
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| 83 | .proc_handler = proc_dointvec,
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| 84 | },
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| 85 | {
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| 86 | .procname = "ping_enable",
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| 87 | .data = &rds_sysctl_ping_enable,
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| 88 | .maxlen = sizeof(int),
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| 89 | .mode = 0644,
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| 90 | .proc_handler = proc_dointvec,
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| 91 | },
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| 92 | };
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| 93 |
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| 94 | void rds_sysctl_exit(void)
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| 95 | {
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| 96 | unregister_net_sysctl_table(rds_sysctl_reg_table);
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| 97 | }
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| 98 |
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| 99 | int rds_sysctl_init(void)
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| 100 | {
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| 101 | rds_sysctl_reconnect_min = msecs_to_jiffies(1);
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| 102 | rds_sysctl_reconnect_min_jiffies = rds_sysctl_reconnect_min;
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| 103 |
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| 104 | rds_sysctl_reg_table =
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| 105 | register_net_sysctl(&init_net, "net/rds", rds_sysctl_rds_table);
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| 106 | if (!rds_sysctl_reg_table)
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| 107 | return -ENOMEM;
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| 108 | return 0;
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| 109 | }
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