udp_tunables.c revision 12016:0248e987199b 
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#include <inet/ip.h>
27#include <inet/ip6.h>
28#include <inet/udp_impl.h>
29#include <sys/sunddi.h>
30
31/*
32 * All of these are alterable, within the min/max values given, at run time.
33 *
34 * Note: All those tunables which do not start with "udp_" are Committed and
35 * therefore are public. See PSARC 2009/306.
36 */
37mod_prop_info_t udp_propinfo_tbl[] = {
38	/* tunable - 0 */
39	{ "udp_wroff_extra", MOD_PROTO_UDP,
40	    mod_set_uint32, mod_get_uint32,
41	    {0, 256, 32}, {32} },
42
43	{ "udp_ipv4_ttl", MOD_PROTO_UDP,
44	    mod_set_uint32, mod_get_uint32,
45	    {1, 255, 255}, {255} },
46
47	{ "udp_ipv6_hoplimit", MOD_PROTO_UDP,
48	    mod_set_uint32, mod_get_uint32,
49	    {0, IPV6_MAX_HOPS, IPV6_DEFAULT_HOPS}, {IPV6_DEFAULT_HOPS} },
50
51	{ "smallest_nonpriv_port", MOD_PROTO_UDP,
52	    mod_set_uint32, mod_get_uint32,
53	    {1024, (32 * 1024), 1024}, {1024} },
54
55	{ "udp_do_checksum", MOD_PROTO_UDP,
56	    mod_set_boolean, mod_get_boolean,
57	    {B_TRUE}, {B_TRUE} },
58
59	{ "smallest_anon_port", MOD_PROTO_UDP,
60	    mod_set_uint32, mod_get_uint32,
61	    {1024, ULP_MAX_PORT, (32 * 1024)}, {(32 * 1024)} },
62
63	{ "largest_anon_port", MOD_PROTO_UDP,
64	    mod_set_uint32, mod_get_uint32,
65	    {1024, ULP_MAX_PORT, ULP_MAX_PORT}, {ULP_MAX_PORT} },
66
67	{ "send_maxbuf", MOD_PROTO_UDP,
68	    mod_set_uint32, mod_get_uint32,
69	    {UDP_XMIT_LOWATER, (1<<30), UDP_XMIT_HIWATER},
70	    {UDP_XMIT_HIWATER} },
71
72	{ "udp_xmit_lowat", MOD_PROTO_UDP,
73	    mod_set_uint32, mod_get_uint32,
74	    {0, (1<<30), UDP_XMIT_LOWATER},
75	    {UDP_XMIT_LOWATER} },
76
77	{ "recv_maxbuf", MOD_PROTO_UDP,
78	    mod_set_uint32, mod_get_uint32,
79	    {UDP_RECV_LOWATER, (1<<30), UDP_RECV_HIWATER},
80	    {UDP_RECV_HIWATER} },
81
82	/* tunable - 10 */
83	{ "udp_max_buf", MOD_PROTO_UDP,
84	    mod_set_uint32, mod_get_uint32,
85	    {65536, (1<<30), 2*1024*1024}, {2*1024*1024} },
86
87	{ "udp_pmtu_discovery", MOD_PROTO_UDP,
88	    mod_set_boolean, mod_get_boolean,
89	    {B_FALSE}, {B_FALSE} },
90
91	{ "udp_sendto_ignerr", MOD_PROTO_UDP,
92	    mod_set_boolean, mod_get_boolean,
93	    {B_FALSE}, {B_FALSE} },
94
95	{ "extra_priv_ports", MOD_PROTO_UDP,
96	    mod_set_extra_privports, mod_get_extra_privports,
97	    {1, ULP_MAX_PORT, 0}, {0} },
98
99	{ "?", MOD_PROTO_UDP, NULL, mod_get_allprop, {0}, {0} },
100
101	{ NULL, 0, NULL, NULL, {0}, {0} }
102};
103
104int udp_propinfo_count = A_CNT(udp_propinfo_tbl);
105