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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207/* * 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;}