[PATCH 18/26] netlink: add a basic rtnetlink parser of dcb messages
JingPiao Chen
chenjingpiao at gmail.com
Thu Aug 10 01:10:15 UTC 2017
* rtnl_dcb.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* netlink_route.h (decode_dcbmsg): New prototype.
* configure.ac (AC_CHECK_HEADERS): Add linux/dcbnl.h.
(AC_CHECK_TYPES): Check for struct dcbmsg in <linux/dcbnl.h>.
* netlink_route.c (route_decoders): Add RTM_GETDCB and RTM_SETDCB.
* xlat/dcb_commands.in: New file.
Co-authored-by: Fabien Siron <fabien.siron at epita.fr>
---
Makefile.am | 1 +
configure.ac | 2 ++
netlink_route.c | 7 +++++-
netlink_route.h | 1 +
rtnl_dcb.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++++++++
xlat/dcb_commands.in | 28 ++++++++++++++++++++++++
6 files changed, 99 insertions(+), 1 deletion(-)
create mode 100644 rtnl_dcb.c
create mode 100644 xlat/dcb_commands.in
diff --git a/Makefile.am b/Makefile.am
index 95b97a8..1a21c38 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -249,6 +249,7 @@ strace_SOURCES = \
rtc.c \
rtnl_addr.c \
rtnl_addrlabel.c \
+ rtnl_dcb.c \
rtnl_link.c \
rtnl_neigh.c \
rtnl_neightbl.c \
diff --git a/configure.ac b/configure.ac
index 9ba1679..5889296 100644
--- a/configure.ac
+++ b/configure.ac
@@ -370,6 +370,7 @@ AC_CHECK_HEADERS(m4_normalize([
inttypes.h
linux/bsg.h
linux/cryptouser.h
+ linux/dcbnl.h
linux/dm-ioctl.h
linux/dqblk_xfs.h
linux/falloc.h
@@ -439,6 +440,7 @@ AC_CHECK_HEADERS([linux/bpf.h], [
st_CHECK_UNION_BPF_ATTR([prog_flags])
])
+AC_CHECK_TYPES([struct dcbmsg],,, [#include <linux/dcbnl.h>])
AC_CHECK_TYPES([struct fib_rule_hdr],,, [#include <linux/fib_rules.h>])
AC_CHECK_TYPES([struct ifaddrlblmsg],,, [#include <linux/if_addrlabel.h>])
diff --git a/netlink_route.c b/netlink_route.c
index 21c7585..1f2c003 100644
--- a/netlink_route.c
+++ b/netlink_route.c
@@ -102,7 +102,12 @@ static const netlink_route_decoder_t route_decoders[] = {
#ifdef HAVE_STRUCT_IFADDRLBLMSG
[RTM_DELADDRLABEL - RTM_BASE] = decode_ifaddrlblmsg,
[RTM_GETADDRLABEL - RTM_BASE] = decode_ifaddrlblmsg,
- [RTM_NEWADDRLABEL - RTM_BASE] = decode_ifaddrlblmsg
+ [RTM_NEWADDRLABEL - RTM_BASE] = decode_ifaddrlblmsg,
+#endif
+
+#ifdef HAVE_STRUCT_DCBMSG
+ [RTM_GETDCB - RTM_BASE] = decode_dcbmsg,
+ [RTM_SETDCB - RTM_BASE] = decode_dcbmsg
#endif
};
diff --git a/netlink_route.h b/netlink_route.h
index d172f01..7c1b711 100644
--- a/netlink_route.h
+++ b/netlink_route.h
@@ -39,6 +39,7 @@ route_decode_name(struct tcb *tcp, \
unsigned int len) \
/* End of DECL_NETLINK_ROUTE_DECODER definition. */
+extern DECL_NETLINK_ROUTE_DECODER(decode_dcbmsg);
extern DECL_NETLINK_ROUTE_DECODER(decode_fib_rule_hdr);
extern DECL_NETLINK_ROUTE_DECODER(decode_ifaddrlblmsg);
extern DECL_NETLINK_ROUTE_DECODER(decode_ifaddrmsg);
diff --git a/rtnl_dcb.c b/rtnl_dcb.c
new file mode 100644
index 0000000..0c9719b
--- /dev/null
+++ b/rtnl_dcb.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2016 Fabien Siron <fabien.siron at epita.fr>
+ * Copyright (c) 2017 JingPiao Chen <chenjingpiao at gmail.com>
+ * 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"
+
+#ifdef HAVE_LINUX_DCBNL_H
+
+# include "netlink_route.h"
+# include "print_fields.h"
+
+# include <linux/dcbnl.h>
+
+# include "xlat/dcb_commands.h"
+
+DECL_NETLINK_ROUTE_DECODER(decode_dcbmsg)
+{
+ struct dcbmsg dcb = { .dcb_family = family };
+ const size_t offset = sizeof(dcb.dcb_family);
+
+ PRINT_FIELD_XVAL("{", dcb, dcb_family, addrfams, "AF_???");
+
+ tprints(", ");
+ if (len >= sizeof(dcb)) {
+ if (!umoven_or_printaddr(tcp, addr + offset,
+ sizeof(dcb) - offset,
+ (void *) &dcb + offset)) {
+ PRINT_FIELD_XVAL("", dcb, cmd,
+ dcb_commands, "DCB_CMD_???");
+ }
+ } else
+ tprints("...");
+ tprints("}");
+}
+
+#endif
diff --git a/xlat/dcb_commands.in b/xlat/dcb_commands.in
new file mode 100644
index 0000000..6a5e613
--- /dev/null
+++ b/xlat/dcb_commands.in
@@ -0,0 +1,28 @@
+DCB_CMD_UNDEFINED 0
+DCB_CMD_GSTATE 1
+DCB_CMD_SSTATE 2
+DCB_CMD_PGTX_GCFG 3
+DCB_CMD_PGTX_SCFG 4
+DCB_CMD_PGRX_GCFG 5
+DCB_CMD_PGRX_SCFG 6
+DCB_CMD_PFC_GCFG 7
+DCB_CMD_PFC_SCFG 8
+DCB_CMD_SET_ALL 9
+DCB_CMD_GPERM_HWADDR 10
+DCB_CMD_GCAP 11
+DCB_CMD_GNUMTCS 12
+DCB_CMD_SNUMTCS 13
+DCB_CMD_PFC_GSTATE 14
+DCB_CMD_PFC_SSTATE 15
+DCB_CMD_BCN_GCFG 16
+DCB_CMD_BCN_SCFG 17
+DCB_CMD_GAPP 18
+DCB_CMD_SAPP 19
+DCB_CMD_IEEE_SET 20
+DCB_CMD_IEEE_GET 21
+DCB_CMD_GDCBX 22
+DCB_CMD_SDCBX 23
+DCB_CMD_GFEATCFG 24
+DCB_CMD_SFEATCFG 25
+DCB_CMD_CEE_GET 26
+DCB_CMD_IEEE_DEL 27
--
2.7.4
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