[PATCH v2 3/4] tests: check decoding of MDBA_MDB_ENTRY_INFO netlink attributes
JingPiao Chen
chenjingpiao at gmail.com
Tue Sep 12 14:55:00 UTC 2017
* tests/nlattr_mdba_mdb_entry.c: New file.
* tests/gen_tests.in (nlattr_mdba_mdb_entry): New entry.
* tests/pure_executables.list: Add nlattr_mdba_mdb_entry.
* tests/.gitignore: Likewise.
---
tests/.gitignore | 1 +
tests/gen_tests.in | 1 +
tests/nlattr_mdba_mdb_entry.c | 179 ++++++++++++++++++++++++++++++++++++++++++
tests/pure_executables.list | 1 +
4 files changed, 182 insertions(+)
create mode 100644 tests/nlattr_mdba_mdb_entry.c
diff --git a/tests/.gitignore b/tests/.gitignore
index 982a9fc..7eb818a 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -231,6 +231,7 @@ nlattr_ifla_xdp
nlattr_inet_diag_msg
nlattr_inet_diag_req_compat
nlattr_inet_diag_req_v2
+nlattr_mdba_mdb_entry
nlattr_ndmsg
nlattr_ndtmsg
nlattr_netconfmsg
diff --git a/tests/gen_tests.in b/tests/gen_tests.in
index a028078..c494cea 100644
--- a/tests/gen_tests.in
+++ b/tests/gen_tests.in
@@ -210,6 +210,7 @@ nlattr_ifla_xdp +netlink_sock_diag.test
nlattr_inet_diag_msg +netlink_sock_diag.test
nlattr_inet_diag_req_compat +netlink_sock_diag.test
nlattr_inet_diag_req_v2 +netlink_sock_diag.test
+nlattr_mdba_mdb_entry +netlink_sock_diag.test
nlattr_ndmsg +netlink_sock_diag.test
nlattr_ndtmsg +netlink_sock_diag.test
nlattr_netconfmsg +netlink_sock_diag.test
diff --git a/tests/nlattr_mdba_mdb_entry.c b/tests/nlattr_mdba_mdb_entry.c
new file mode 100644
index 0000000..0b6d928
--- /dev/null
+++ b/tests/nlattr_mdba_mdb_entry.c
@@ -0,0 +1,179 @@
+/*
+ * Copyright (c) 2017 JingPiao Chen <chenjingpiao at gmail.com>
+ * Copyright (c) 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 "tests.h"
+
+#ifdef HAVE_STRUCT_BR_PORT_MSG
+
+# include <stdio.h>
+# include "test_nlattr.h"
+# include <arpa/inet.h>
+# include <linux/if_bridge.h>
+# include <linux/rtnetlink.h>
+
+# ifndef MDBA_MDB_ENTRY_INFO
+# define MDBA_MDB_ENTRY_INFO 1
+# endif
+# ifndef MDBA_MDB_EATTR_TIMER
+# define MDBA_MDB_EATTR_TIMER 1
+# endif
+
+const unsigned int hdrlen = sizeof(struct br_port_msg);
+
+static void
+init_br_port_msg(struct nlmsghdr *const nlh, const unsigned int msg_len)
+{
+ unsigned int len = msg_len;
+
+ SET_STRUCT(struct nlmsghdr, nlh,
+ .nlmsg_len = len,
+ .nlmsg_type = RTM_GETMDB,
+ .nlmsg_flags = NLM_F_DUMP
+ );
+
+ struct br_port_msg *const msg = NLMSG_DATA(nlh);
+ SET_STRUCT(struct br_port_msg, msg,
+ .family = AF_UNIX,
+ .ifindex = ifindex_lo()
+ );
+
+ struct nlattr *nla = NLMSG_ATTR(nlh, sizeof(*msg));
+ len -= NLMSG_SPACE(hdrlen);
+ SET_STRUCT(struct nlattr, nla,
+ .nla_len = len,
+ .nla_type = MDBA_MDB
+ );
+
+ nla = nla + 1;
+ len -= NLA_HDRLEN;
+ SET_STRUCT(struct nlattr, nla,
+ .nla_len = len,
+ .nla_type = MDBA_MDB_ENTRY
+ );
+}
+
+static void
+print_br_port_msg(const unsigned int msg_len)
+{
+ printf("{len=%u, type=RTM_GETMDB, flags=NLM_F_DUMP"
+ ", seq=0, pid=0}, {family=AF_UNIX"
+ ", ifindex=" IFINDEX_LO_STR "}"
+ ", {{nla_len=%u, nla_type=MDBA_MDB}"
+ ", {{nla_len=%u, nla_type=MDBA_MDB_ENTRY}",
+ msg_len, msg_len - NLMSG_SPACE(hdrlen),
+ msg_len - NLMSG_SPACE(hdrlen) - NLA_HDRLEN);
+}
+
+int
+main(void)
+{
+ skip_if_unavailable("/proc/self/fd/");
+
+ const int fd = create_nl_socket(NETLINK_ROUTE);
+
+ void *nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
+
+ static char pattern[4096];
+ fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
+
+ const unsigned int nla_type = 0xffff & NLA_TYPE_MASK;
+ char nla_type_str[256];
+ sprintf(nla_type_str, "%#x /* MDBA_MDB_ENTRY_??? */", nla_type);
+ TEST_NLATTR_(fd, nlh0 - NLA_HDRLEN * 2, hdrlen + NLA_HDRLEN * 2,
+ init_br_port_msg, print_br_port_msg,
+ nla_type, nla_type_str,
+ 4, pattern, 4,
+ print_quoted_hex(pattern, 4);
+ printf("}}"));
+
+# ifdef HAVE_STRUCT_BR_MDB_ENTRY
+ struct br_mdb_entry entry = {
+ .ifindex = ifindex_lo(),
+ .state = MDB_TEMPORARY,
+# ifdef HAVE_STRUCT_BR_MDB_ENTRY_FLAGS
+ .flags = MDB_FLAGS_OFFLOAD,
+# endif
+# ifdef HAVE_STRUCT_BR_MDB_ENTRY_VID
+ .vid = 0xcdef,
+# endif
+ .addr = {
+ .proto = htons(AF_UNSPEC)
+ }
+ };
+
+ memcpy(&entry.addr.u, pattern, sizeof(entry.addr.u));
+ TEST_NESTED_NLATTR_OBJECT_EX(fd, nlh0, hdrlen,
+ init_br_port_msg, print_br_port_msg,
+ MDBA_MDB_ENTRY_INFO, pattern, entry, 2,
+ printf("{ifindex=" IFINDEX_LO_STR);
+ printf(", state=MDB_TEMPORARY");
+# ifdef HAVE_STRUCT_BR_MDB_ENTRY_FLAGS
+ printf(", flags=MDB_FLAGS_OFFLOAD");
+# endif
+# ifdef HAVE_STRUCT_BR_MDB_ENTRY_VID
+ PRINT_FIELD_U(", ", entry, vid);
+# endif
+ printf(", addr={u=");
+ print_quoted_hex(&entry.addr.u,
+ sizeof(entry.addr.u));
+ printf(", proto=htons(AF_UNSPEC)}}"));
+
+ static const struct nlattr nla = {
+ .nla_len = sizeof(nla),
+ .nla_type = MDBA_MDB_EATTR_TIMER
+ };
+ char buf[NLMSG_ALIGN(sizeof(entry)) + sizeof(nla)];
+ memcpy(buf, &entry, sizeof(entry));
+ memcpy(buf + NLMSG_ALIGN(sizeof(entry)), &nla, sizeof(nla));
+ TEST_NLATTR(fd, nlh0 - NLA_HDRLEN * 2, hdrlen + NLA_HDRLEN * 2,
+ init_br_port_msg, print_br_port_msg,
+ MDBA_MDB_ENTRY_INFO, sizeof(buf), buf, sizeof(buf),
+ printf("{ifindex=" IFINDEX_LO_STR);
+ printf(", state=MDB_TEMPORARY");
+# ifdef HAVE_STRUCT_BR_MDB_ENTRY_FLAGS
+ printf(", flags=MDB_FLAGS_OFFLOAD");
+# endif
+# ifdef HAVE_STRUCT_BR_MDB_ENTRY_VID
+ PRINT_FIELD_U(", ", entry, vid);
+# endif
+ printf(", addr={u=");
+ print_quoted_hex(&entry.addr.u, sizeof(entry.addr.u));
+ printf(", proto=htons(AF_UNSPEC)}}"
+ ", {nla_len=%u, nla_type=MDBA_MDB_EATTR_TIMER}}}",
+ nla.nla_len));
+# endif /* HAVE_STRUCT_BR_MDB_ENTRY */
+
+ puts("+++ exited with 0 +++");
+ return 0;
+}
+
+#else
+
+SKIP_MAIN_UNDEFINED("HAVE_STRUCT_BR_PORT_MSG")
+
+#endif
diff --git a/tests/pure_executables.list b/tests/pure_executables.list
index 3fcb551..1ba1e19 100755
--- a/tests/pure_executables.list
+++ b/tests/pure_executables.list
@@ -193,6 +193,7 @@ nlattr_ifla_xdp
nlattr_inet_diag_msg
nlattr_inet_diag_req_compat
nlattr_inet_diag_req_v2
+nlattr_mdba_mdb_entry
nlattr_ndmsg
nlattr_ndtmsg
nlattr_netconfmsg
--
2.7.4
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