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 (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright 2013 Nexenta Systems, Inc. All rights reserved.
24 */
25 /* Copyright (c) 1990 Mentat Inc. */
26
27 #include <inet/ip.h>
28 #include <inet/ip6.h>
29 #include <inet/udp_impl.h>
30 #include <sys/sunddi.h>
31
32 /*
33 * Special checkers for smallest/largest anonymous port so they don't
34 * ever happen to be (largest < smallest).
35 */
36 /* ARGSUSED */
37 static int
38 udp_smallest_anon_set(void *cbarg, cred_t *cr, mod_prop_info_t *pinfo,
39 const char *ifname, const void *pval, uint_t flags)
40 {
41 unsigned long new_value;
42 udp_stack_t *us = (udp_stack_t *)cbarg;
43 int err;
44
45 if ((err = mod_uint32_value(pval, pinfo, flags, &new_value)) != 0)
46 return (err);
47 /* mod_uint32_value() + pinfo guarantees we're in UDP port range. */
48 if (new_value > us->us_largest_anon_port)
49 return (ERANGE);
50 pinfo->prop_cur_uval = (uint32_t)new_value;
51 return (0);
52 }
53
54 /* ARGSUSED */
55 static int
56 udp_largest_anon_set(void *cbarg, cred_t *cr, mod_prop_info_t *pinfo,
57 const char *ifname, const void *pval, uint_t flags)
58 {
59 unsigned long new_value;
60 udp_stack_t *us = (udp_stack_t *)cbarg;
61 int err;
62
63 if ((err = mod_uint32_value(pval, pinfo, flags, &new_value)) != 0)
64 return (err);
65 /* mod_uint32_value() + pinfo guarantees we're in UDP port range. */
66 if (new_value < us->us_smallest_anon_port)
67 return (ERANGE);
68 pinfo->prop_cur_uval = (uint32_t)new_value;
69 return (0);
70 }
71
72 /*
73 * All of these are alterable, within the min/max values given, at run time.
74 *
75 * Note: All those tunables which do not start with "_" are Committed and
76 * therefore are public. See PSARC 2010/080.
77 */
78 mod_prop_info_t udp_propinfo_tbl[] = {
79 /* tunable - 0 */
80 { "_wroff_extra", MOD_PROTO_UDP,
81 mod_set_uint32, mod_get_uint32,
82 {0, 256, 32}, {32} },
83
84 { "_ipv4_ttl", MOD_PROTO_UDP,
85 mod_set_uint32, mod_get_uint32,
86 {1, 255, 255}, {255} },
87
88 { "_ipv6_hoplimit", MOD_PROTO_UDP,
89 mod_set_uint32, mod_get_uint32,
90 {0, IPV6_MAX_HOPS, IPV6_DEFAULT_HOPS}, {IPV6_DEFAULT_HOPS} },
91
92 { "smallest_nonpriv_port", MOD_PROTO_UDP,
93 mod_set_uint32, mod_get_uint32,
94 {1024, (32 * 1024), 1024}, {1024} },
95
96 { "_do_checksum", MOD_PROTO_UDP,
97 mod_set_boolean, mod_get_boolean,
98 {B_TRUE}, {B_TRUE} },
99
100 { "smallest_anon_port", MOD_PROTO_UDP,
101 udp_smallest_anon_set, mod_get_uint32,
102 {1024, ULP_MAX_PORT, (32 * 1024)}, {(32 * 1024)} },
103
104 { "largest_anon_port", MOD_PROTO_UDP,
105 udp_largest_anon_set, mod_get_uint32,
106 {1024, ULP_MAX_PORT, ULP_MAX_PORT}, {ULP_MAX_PORT} },
107
108 { "send_maxbuf", MOD_PROTO_UDP,
109 mod_set_uint32, mod_get_uint32,
110 {UDP_XMIT_LOWATER, (1<<30), UDP_XMIT_HIWATER},
111 {UDP_XMIT_HIWATER} },
112
113 { "_xmit_lowat", MOD_PROTO_UDP,
114 mod_set_uint32, mod_get_uint32,
115 {0, (1<<30), UDP_XMIT_LOWATER},
116 {UDP_XMIT_LOWATER} },
117
118 { "recv_maxbuf", MOD_PROTO_UDP,
119 mod_set_uint32, mod_get_uint32,
120 {UDP_RECV_LOWATER, (1<<30), UDP_RECV_HIWATER},
121 {UDP_RECV_HIWATER} },
122
123 /* tunable - 10 */
124 { "_max_buf", MOD_PROTO_UDP,
125 mod_set_uint32, mod_get_uint32,
126 {65536, (1<<30), 2*1024*1024}, {2*1024*1024} },
127
128 { "_pmtu_discovery", MOD_PROTO_UDP,
129 mod_set_boolean, mod_get_boolean,
130 {B_FALSE}, {B_FALSE} },
131
132 { "_sendto_ignerr", MOD_PROTO_UDP,
133 mod_set_boolean, mod_get_boolean,
134 {B_FALSE}, {B_FALSE} },
135
136 { "extra_priv_ports", MOD_PROTO_UDP,
137 mod_set_extra_privports, mod_get_extra_privports,
138 {1, ULP_MAX_PORT, 0}, {0} },
139
140 { "?", MOD_PROTO_UDP, NULL, mod_get_allprop, {0}, {0} },
141
142 { NULL, 0, NULL, NULL, {0}, {0} }
143 };
144
145 int udp_propinfo_count = A_CNT(udp_propinfo_tbl);