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); 146