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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 | /* * net/tipc/trace.c: TIPC tracepoints code * * Copyright (c) 2018, Ericsson AB * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the names of the copyright holders nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "ASIS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #define CREATE_TRACE_POINTS #include "trace.h" /** * socket tuples for filtering in socket traces: * (portid, sock type, name type, name lower, name upper) */ unsigned long sysctl_tipc_sk_filter[5] __read_mostly = {0, }; /** * tipc_skb_dump - dump TIPC skb data * @skb: skb to be dumped * @more: dump more? * - false: dump only tipc msg data * - true: dump kernel-related skb data and tipc cb[] array as well * @buf: returned buffer of dump data in format */ int tipc_skb_dump(struct sk_buff *skb, bool more, char *buf) { int i = 0; size_t sz = (more) ? SKB_LMAX : SKB_LMIN; struct tipc_msg *hdr; struct tipc_skb_cb *skbcb; if (!skb) { i += scnprintf(buf, sz, "msg: (null)\n"); return i; } hdr = buf_msg(skb); skbcb = TIPC_SKB_CB(skb); /* tipc msg data section */ i += scnprintf(buf, sz, "msg: %u", msg_user(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_type(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_hdr_sz(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_data_sz(hdr)); i += scnprintf(buf + i, sz - i, " %x", msg_orignode(hdr)); i += scnprintf(buf + i, sz - i, " %x", msg_destnode(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_seqno(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_ack(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_bcast_ack(hdr)); switch (msg_user(hdr)) { case LINK_PROTOCOL: i += scnprintf(buf + i, sz - i, " %c", msg_net_plane(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_probe(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_peer_stopping(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_session(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_next_sent(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_seq_gap(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_bc_snd_nxt(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_bc_gap(hdr)); break; case TIPC_LOW_IMPORTANCE: case TIPC_MEDIUM_IMPORTANCE: case TIPC_HIGH_IMPORTANCE: case TIPC_CRITICAL_IMPORTANCE: case CONN_MANAGER: case SOCK_WAKEUP: i += scnprintf(buf + i, sz - i, " | %u", msg_origport(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_destport(hdr)); switch (msg_type(hdr)) { case TIPC_NAMED_MSG: i += scnprintf(buf + i, sz - i, " %u", msg_nametype(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_nameinst(hdr)); break; case TIPC_MCAST_MSG: i += scnprintf(buf + i, sz - i, " %u", msg_nametype(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_namelower(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_nameupper(hdr)); break; default: break; } i += scnprintf(buf + i, sz - i, " | %u", msg_src_droppable(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_dest_droppable(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_errcode(hdr)); i += scnprintf(buf + i, sz - i, " %u", msg_reroute_cnt(hdr)); break; default: /* need more? */ break; } i += scnprintf(buf + i, sz - i, "\n"); if (!more) return i; /* kernel-related skb data section */ i += scnprintf(buf + i, sz - i, "skb: %s", (skb->dev) ? skb->dev->name : "n/a"); i += scnprintf(buf + i, sz - i, " %u", skb->len); i += scnprintf(buf + i, sz - i, " %u", skb->data_len); i += scnprintf(buf + i, sz - i, " %u", skb->hdr_len); i += scnprintf(buf + i, sz - i, " %u", skb->truesize); i += scnprintf(buf + i, sz - i, " %u", skb_cloned(skb)); i += scnprintf(buf + i, sz - i, " %p", skb->sk); i += scnprintf(buf + i, sz - i, " %u", skb_shinfo(skb)->nr_frags); i += scnprintf(buf + i, sz - i, " %llx", ktime_to_ms(skb_get_ktime(skb))); i += scnprintf(buf + i, sz - i, " %llx\n", ktime_to_ms(skb_hwtstamps(skb)->hwtstamp)); /* tipc skb cb[] data section */ i += scnprintf(buf + i, sz - i, "cb[]: %u", skbcb->bytes_read); i += scnprintf(buf + i, sz - i, " %u", skbcb->orig_member); i += scnprintf(buf + i, sz - i, " %u", jiffies_to_msecs(skbcb->nxt_retr)); i += scnprintf(buf + i, sz - i, " %u", skbcb->validated); i += scnprintf(buf + i, sz - i, " %u", skbcb->chain_imp); i += scnprintf(buf + i, sz - i, " %u\n", skbcb->ackers); return i; } /** * tipc_list_dump - dump TIPC skb list/queue * @list: list of skbs to be dumped * @more: dump more? * - false: dump only the head & tail skbs * - true: dump the first & last 5 skbs * @buf: returned buffer of dump data in format */ int tipc_list_dump(struct sk_buff_head *list, bool more, char *buf) { int i = 0; size_t sz = (more) ? LIST_LMAX : LIST_LMIN; u32 count, len; struct sk_buff *hskb, *tskb, *skb, *tmp; if (!list) { i += scnprintf(buf, sz, "(null)\n"); return i; } len = skb_queue_len(list); i += scnprintf(buf, sz, "len = %d\n", len); if (!len) return i; if (!more) { hskb = skb_peek(list); i += scnprintf(buf + i, sz - i, " head "); i += tipc_skb_dump(hskb, false, buf + i); if (len > 1) { tskb = skb_peek_tail(list); i += scnprintf(buf + i, sz - i, " tail "); i += tipc_skb_dump(tskb, false, buf + i); } } else { count = 0; skb_queue_walk_safe(list, skb, tmp) { count++; if (count == 6) i += scnprintf(buf + i, sz - i, " .\n .\n"); if (count > 5 && count <= len - 5) continue; i += scnprintf(buf + i, sz - i, " #%d ", count); i += tipc_skb_dump(skb, false, buf + i); } } return i; } |