From 88f99424072bf18d4a2f1f52e999ef3c5f4db847 Mon Sep 17 00:00:00 2001 From: JingPiao Chen Date: Sun, 13 Aug 2017 10:22:29 +0800 Subject: [PATCH] netlink: add a basic rtnetlink parser of tc messages * rtnl_tc.c: New file. * Makefile.am (strace_SOURCES): Add it. * netlink_route.h (decode_tcmsg): New prototype. * netlink_route.c (route_decoders): Add RTM_DELQDISC, RTM_GETQDISC, RTM_NEWQDISC, RTM_DELTCLASS, RTM_GETTCLASS, RTM_NEWTCLASS, RTM_DELTFILTER, RTM_GETTFILTER, and RTM_NEWTFILTER. Co-authored-by: Fabien Siron --- Makefile.am | 1 + netlink_route.c | 12 ++++++++++- netlink_route.h | 1 + rtnl_tc.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 70 insertions(+), 1 deletion(-) create mode 100644 rtnl_tc.c diff --git a/Makefile.am b/Makefile.am index 89f1f0d4..2585b7de 100644 --- a/Makefile.am +++ b/Makefile.am @@ -253,6 +253,7 @@ strace_SOURCES = \ rtnl_neightbl.c \ rtnl_route.c \ rtnl_rule.c \ + rtnl_tc.c \ sched.c \ sched_attr.h \ scsi.c \ diff --git a/netlink_route.c b/netlink_route.c index 13b6c29c..5448b59f 100644 --- a/netlink_route.c +++ b/netlink_route.c @@ -77,7 +77,17 @@ static const netlink_route_decoder_t route_decoders[] = { [RTM_GETNEIGHTBL - RTM_BASE] = decode_ndtmsg, [RTM_NEWNEIGHTBL - RTM_BASE] = decode_ndtmsg, - [RTM_SETNEIGHTBL - RTM_BASE] = decode_ndtmsg + [RTM_SETNEIGHTBL - RTM_BASE] = decode_ndtmsg, + + [RTM_DELQDISC - RTM_BASE] = decode_tcmsg, + [RTM_GETQDISC - RTM_BASE] = decode_tcmsg, + [RTM_NEWQDISC - RTM_BASE] = decode_tcmsg, + [RTM_DELTCLASS - RTM_BASE] = decode_tcmsg, + [RTM_GETTCLASS - RTM_BASE] = decode_tcmsg, + [RTM_NEWTCLASS - RTM_BASE] = decode_tcmsg, + [RTM_DELTFILTER - RTM_BASE] = decode_tcmsg, + [RTM_GETTFILTER - RTM_BASE] = decode_tcmsg, + [RTM_NEWTFILTER - RTM_BASE] = decode_tcmsg }; bool diff --git a/netlink_route.h b/netlink_route.h index 32972c24..4a508471 100644 --- a/netlink_route.h +++ b/netlink_route.h @@ -46,5 +46,6 @@ extern DECL_NETLINK_ROUTE_DECODER(decode_ndmsg); extern DECL_NETLINK_ROUTE_DECODER(decode_ndtmsg); extern DECL_NETLINK_ROUTE_DECODER(decode_rtm_getneigh); extern DECL_NETLINK_ROUTE_DECODER(decode_rtmsg); +extern DECL_NETLINK_ROUTE_DECODER(decode_tcmsg); #endif /* !STRACE_NETLINK_ROUTE_H */ diff --git a/rtnl_tc.c b/rtnl_tc.c new file mode 100644 index 00000000..db06e556 --- /dev/null +++ b/rtnl_tc.c @@ -0,0 +1,57 @@ +/* + * Copyright (c) 2016 Fabien Siron + * Copyright (c) 2017 JingPiao Chen + * Copyright (c) 2016-2017 The strace developers. + * 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. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' 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 AUTHOR 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. + */ + +#include "defs.h" +#include "netlink_route.h" +#include "print_fields.h" + +#include "netlink.h" +#include + +DECL_NETLINK_ROUTE_DECODER(decode_tcmsg) +{ + struct tcmsg tcmsg = { .tcm_family = family }; + const size_t offset = sizeof(tcmsg.tcm_family); + + PRINT_FIELD_XVAL("{", tcmsg, tcm_family, addrfams, "AF_???"); + + tprints(", "); + if (len >= sizeof(tcmsg)) { + if (!umoven_or_printaddr(tcp, addr + offset, + sizeof(tcmsg) - offset, + (void *) &tcmsg + offset)) { + PRINT_FIELD_IFINDEX("", tcmsg, tcm_ifindex); + PRINT_FIELD_U(", ", tcmsg, tcm_handle); + PRINT_FIELD_U(", ", tcmsg, tcm_parent); + PRINT_FIELD_U(", ", tcmsg, tcm_info); + } + } else + tprints("..."); + tprints("}"); +} -- 2.40.0