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206 lines
7.0 KiB
206 lines
7.0 KiB
/* |
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* net/tipc/trace.c: TIPC tracepoints code |
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* |
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* Copyright (c) 2018, Ericsson AB |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the names of the copyright holders nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* Alternatively, this software may be distributed under the terms of the |
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* GNU General Public License ("GPL") version 2 as published by the Free |
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* Software Foundation. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "ASIS" |
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#define CREATE_TRACE_POINTS |
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#include "trace.h" |
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/* |
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* socket tuples for filtering in socket traces: |
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* (portid, sock type, name type, name lower, name upper) |
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*/ |
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unsigned long sysctl_tipc_sk_filter[5] __read_mostly = {0, }; |
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/** |
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* tipc_skb_dump - dump TIPC skb data |
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* @skb: skb to be dumped |
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* @more: dump more? |
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* - false: dump only tipc msg data |
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* - true: dump kernel-related skb data and tipc cb[] array as well |
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* @buf: returned buffer of dump data in format |
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*/ |
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int tipc_skb_dump(struct sk_buff *skb, bool more, char *buf) |
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{ |
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int i = 0; |
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size_t sz = (more) ? SKB_LMAX : SKB_LMIN; |
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struct tipc_msg *hdr; |
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struct tipc_skb_cb *skbcb; |
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if (!skb) { |
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i += scnprintf(buf, sz, "msg: (null)\n"); |
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return i; |
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} |
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hdr = buf_msg(skb); |
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skbcb = TIPC_SKB_CB(skb); |
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/* tipc msg data section */ |
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i += scnprintf(buf, sz, "msg: %u", msg_user(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_type(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_hdr_sz(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_data_sz(hdr)); |
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i += scnprintf(buf + i, sz - i, " %x", msg_orignode(hdr)); |
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i += scnprintf(buf + i, sz - i, " %x", msg_destnode(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_seqno(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_ack(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_bcast_ack(hdr)); |
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switch (msg_user(hdr)) { |
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case LINK_PROTOCOL: |
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i += scnprintf(buf + i, sz - i, " %c", msg_net_plane(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_probe(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_peer_stopping(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_session(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_next_sent(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_seq_gap(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_bc_snd_nxt(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_bc_gap(hdr)); |
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break; |
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case TIPC_LOW_IMPORTANCE: |
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case TIPC_MEDIUM_IMPORTANCE: |
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case TIPC_HIGH_IMPORTANCE: |
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case TIPC_CRITICAL_IMPORTANCE: |
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case CONN_MANAGER: |
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case SOCK_WAKEUP: |
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i += scnprintf(buf + i, sz - i, " | %u", msg_origport(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_destport(hdr)); |
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switch (msg_type(hdr)) { |
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case TIPC_NAMED_MSG: |
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i += scnprintf(buf + i, sz - i, " %u", |
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msg_nametype(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", |
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msg_nameinst(hdr)); |
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break; |
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case TIPC_MCAST_MSG: |
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i += scnprintf(buf + i, sz - i, " %u", |
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msg_nametype(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", |
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msg_namelower(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", |
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msg_nameupper(hdr)); |
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break; |
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default: |
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break; |
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} |
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i += scnprintf(buf + i, sz - i, " | %u", |
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msg_src_droppable(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", |
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msg_dest_droppable(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_errcode(hdr)); |
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i += scnprintf(buf + i, sz - i, " %u", msg_reroute_cnt(hdr)); |
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break; |
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default: |
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/* need more? */ |
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break; |
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} |
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i += scnprintf(buf + i, sz - i, "\n"); |
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if (!more) |
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return i; |
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/* kernel-related skb data section */ |
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i += scnprintf(buf + i, sz - i, "skb: %s", |
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(skb->dev) ? skb->dev->name : "n/a"); |
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i += scnprintf(buf + i, sz - i, " %u", skb->len); |
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i += scnprintf(buf + i, sz - i, " %u", skb->data_len); |
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i += scnprintf(buf + i, sz - i, " %u", skb->hdr_len); |
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i += scnprintf(buf + i, sz - i, " %u", skb->truesize); |
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i += scnprintf(buf + i, sz - i, " %u", skb_cloned(skb)); |
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i += scnprintf(buf + i, sz - i, " %p", skb->sk); |
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i += scnprintf(buf + i, sz - i, " %u", skb_shinfo(skb)->nr_frags); |
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i += scnprintf(buf + i, sz - i, " %llx", |
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ktime_to_ms(skb_get_ktime(skb))); |
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i += scnprintf(buf + i, sz - i, " %llx\n", |
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ktime_to_ms(skb_hwtstamps(skb)->hwtstamp)); |
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/* tipc skb cb[] data section */ |
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i += scnprintf(buf + i, sz - i, "cb[]: %u", skbcb->bytes_read); |
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i += scnprintf(buf + i, sz - i, " %u", skbcb->orig_member); |
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i += scnprintf(buf + i, sz - i, " %u", |
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jiffies_to_msecs(skbcb->nxt_retr)); |
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i += scnprintf(buf + i, sz - i, " %u", skbcb->validated); |
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i += scnprintf(buf + i, sz - i, " %u", skbcb->chain_imp); |
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i += scnprintf(buf + i, sz - i, " %u\n", skbcb->ackers); |
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return i; |
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} |
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/** |
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* tipc_list_dump - dump TIPC skb list/queue |
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* @list: list of skbs to be dumped |
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* @more: dump more? |
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* - false: dump only the head & tail skbs |
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* - true: dump the first & last 5 skbs |
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* @buf: returned buffer of dump data in format |
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*/ |
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int tipc_list_dump(struct sk_buff_head *list, bool more, char *buf) |
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{ |
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int i = 0; |
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size_t sz = (more) ? LIST_LMAX : LIST_LMIN; |
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u32 count, len; |
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struct sk_buff *hskb, *tskb, *skb, *tmp; |
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if (!list) { |
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i += scnprintf(buf, sz, "(null)\n"); |
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return i; |
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} |
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len = skb_queue_len(list); |
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i += scnprintf(buf, sz, "len = %d\n", len); |
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if (!len) |
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return i; |
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if (!more) { |
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hskb = skb_peek(list); |
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i += scnprintf(buf + i, sz - i, " head "); |
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i += tipc_skb_dump(hskb, false, buf + i); |
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if (len > 1) { |
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tskb = skb_peek_tail(list); |
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i += scnprintf(buf + i, sz - i, " tail "); |
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i += tipc_skb_dump(tskb, false, buf + i); |
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} |
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} else { |
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count = 0; |
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skb_queue_walk_safe(list, skb, tmp) { |
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count++; |
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if (count == 6) |
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i += scnprintf(buf + i, sz - i, " .\n .\n"); |
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if (count > 5 && count <= len - 5) |
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continue; |
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i += scnprintf(buf + i, sz - i, " #%d ", count); |
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i += tipc_skb_dump(skb, false, buf + i); |
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} |
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} |
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return i; |
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}
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