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 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 * Copyright (c) 2012, Joyent, Inc. All rights reserved. 25 */ 26 27 #include <mdb/mdb_modapi.h> 28 #include <mdb/mdb_ks.h> 29 #include <mdb/mdb_ctf.h> 30 #include <sys/types.h> 31 #include <sys/netstack.h> 32 33 int 34 netstack_walk_init(mdb_walk_state_t *wsp) 35 { 36 GElf_Sym sym; 37 uintptr_t addr; 38 39 if (mdb_lookup_by_name("netstack_head", &sym) == -1) { 40 mdb_warn("couldn't find netstack_head"); 41 return (WALK_ERR); 42 } 43 addr = (uintptr_t)sym.st_value; 44 45 if (mdb_vread(&wsp->walk_addr, sizeof (wsp->walk_addr), addr) == -1) { 46 mdb_warn("failed to read address of initial netstack " 47 "at %p", addr); 48 return (WALK_ERR); 49 } 50 return (WALK_NEXT); 51 } 52 53 int 54 netstack_walk_step(mdb_walk_state_t *wsp) 55 { 56 int status; 57 netstack_t nss; 58 59 if (wsp->walk_addr == 0) 60 return (WALK_DONE); 61 62 if (mdb_vread(&nss, sizeof (netstack_t), wsp->walk_addr) == -1) { 63 mdb_warn("failed to read netstack at %p", wsp->walk_addr); 64 return (WALK_ERR); 65 } 66 67 status = wsp->walk_callback(wsp->walk_addr, &nss, 68 wsp->walk_cbdata); 69 70 if (status != WALK_NEXT) 71 return (status); 72 73 wsp->walk_addr = (uintptr_t)nss.netstack_next; 74 return (status); 75 } 76 77 /*ARGSUSED*/ 78 int 79 netstack(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) 80 { 81 netstack_t nss; 82 uint_t quiet = FALSE; 83 uint_t verbose = FALSE; 84 85 if (!(flags & DCMD_ADDRSPEC)) { 86 if (mdb_walk_dcmd("genunix`netstack", "genunix`netstack", 87 argc, argv) == -1) { 88 mdb_warn("failed to walk netstack"); 89 return (DCMD_ERR); 90 } 91 return (DCMD_OK); 92 } 93 if (mdb_getopts(argc, argv, 94 'v', MDB_OPT_SETBITS, TRUE, &verbose, 95 'q', MDB_OPT_SETBITS, TRUE, &quiet, 96 NULL) != argc) 97 return (DCMD_USAGE); 98 99 if (DCMD_HDRSPEC(flags) && !quiet) { 100 mdb_printf("%?s %-7s %6s\n", 101 "ADDR", "STACKID", "FLAGS"); 102 } 103 104 if (mdb_vread(&nss, sizeof (nss), addr) == -1) { 105 mdb_warn("couldn't read netstack at %p", addr); 106 return (DCMD_ERR); 107 } 108 109 /* 110 * Options are specified for filtering, so If any option is specified on 111 * the command line, just print address and exit. 112 */ 113 if (quiet) { 114 mdb_printf("%0?p\n", addr); 115 return (DCMD_OK); 116 } 117 118 mdb_printf("%0?p %6d %06x\n", 119 addr, nss.netstack_stackid, nss.netstack_flags); 120 121 return (DCMD_OK); 122 } 123 124 static int 125 netstackid_lookup_cb(uintptr_t addr, const netstack_t *ns, void *arg) 126 { 127 netstackid_t nid = *(uintptr_t *)arg; 128 if (ns->netstack_stackid == nid) 129 mdb_printf("%p\n", addr); 130 131 return (WALK_NEXT); 132 } 133 134 /*ARGSUSED*/ 135 int 136 netstackid2netstack(uintptr_t addr, uint_t flags, int argc, 137 const mdb_arg_t *argv) 138 { 139 if (!(flags & DCMD_ADDRSPEC) || argc != 0) 140 return (DCMD_USAGE); 141 142 if (mdb_walk("netstack", (mdb_walk_cb_t)netstackid_lookup_cb, &addr) == 143 -1) { 144 mdb_warn("failed to walk zone"); 145 return (DCMD_ERR); 146 } 147 148 return (DCMD_OK); 149 } 150