Add a new GDB macro called ovs_dump_conntrack_conns, which can
be used to dump all conn structure in a conntrack. For example
(gdb) ovs_dump_conntrack_conns
usage: ovs_dump_conntrack_conns <struct conntrack *> {short}
(gdb) ovs_dump_conntrack_conns 0x5606339c25e0
(struct conn *) 0x7f32c000a8c0: expiration = 26162886419, mark = 0, dl_type =
8, zone = 3, nw_proto = 6 '\006'
(struct conn *) 0x7f32c00489d0: expiration = 26162900867, mark = 0, dl_type =
8, zone = 3, nw_proto = 1 '\001'
(struct conn *) 0x7f32c0153bb0: expiration = 26249266420, mark = 0, dl_type =
8, zone = 3, nw_proto = 6 '\006'
(gdb) ovs_dump_conntrack_conns 0x5606339c25e0 short
(struct conn *) 0x7f32c000a8c0
(struct conn *) 0x7f32c00489d0
(struct conn *) 0x7f32c0153bb0
Signed-off-by: LIU Yulong <i...@liuyulong.me>
---
v1: initial version
v2: address comments from reviewers
print details of struct conn
add short param
v3: address pep8 check warnnings
---
utilities/gdb/ovs_gdb.py | 58 ++++++++++++++++++++++++++++++++++++++++
1 file changed, 58 insertions(+)
diff --git a/utilities/gdb/ovs_gdb.py b/utilities/gdb/ovs_gdb.py
index 982395dd1..ea9ee5f88 100644
--- a/utilities/gdb/ovs_gdb.py
+++ b/utilities/gdb/ovs_gdb.py
@@ -37,6 +37,7 @@
# - ovs_dump_udpif_keys {<udpif_name>|<udpif_address>} {short}
# - ovs_show_fdb {[<bridge_name>] {dbg} {hash}}
# - ovs_show_upcall {dbg}
+# - ovs_dump_conntrack_conns <struct conntrack *> {short}
#
# Example:
# $ gdb $(which ovs-vswitchd) $(pidof ovs-vswitchd)
@@ -1550,6 +1551,62 @@ class CmdDumpPackets(gdb.Command):
return packet
+#
+# Implements the GDB "ovs_dump_conntrack_conns" command
+#
+class CmdDumpDpConntrackConn(gdb.Command):
+ """Dump all connections in a conntrack set
+ Usage:
+ ovs_dump_conntrack_conns <struct conntrack *> {short}
+
+ <struct conntrack *> : Pointer to conntrack
+ short : Only dump conn structure addresses,
+ no content details
+
+ Example dumping all <struct conn> connections:
+
+ (gdb) ovs_dump_conntrack_conns 0x5606339c25e0
+ (struct conn *) 0x7f32c000a8c0: expiration = ... nw_proto = 1
+ (struct conn *) 0x7f32c00489d0: expiration = ... nw_proto = 6
+ (struct conn *) 0x7f32c0153bb0: expiration = ... nw_proto = 17
+
+ (gdb) ovs_dump_conntrack_conns 0x5606339c25e0 short
+ (struct conn *) 0x7f32c000a8c0
+ (struct conn *) 0x7f32c00489d0
+ (struct conn *) 0x7f32c0153bb0
+ """
+ def __init__(self):
+ super(CmdDumpDpConntrackConn, self).__init__(
+ "ovs_dump_conntrack_conns",
+ gdb.COMMAND_DATA)
+
+ @staticmethod
+ def display_single_conn(conn, indent=0, short=False):
+ indent = " " * indent
+ if short:
+ print("{}(struct conn *) {}".format(indent, conn))
+ else:
+ print("{}(struct conn *) {}: expiration = {}, mark = {}, "
+ "dl_type = {}, zone = {}, nw_proto = {}".format(
+ indent, conn, conn['expiration'],
+ conn['mark'], conn['key']['dl_type'],
+ conn['key']['zone'],
+ conn['key']['nw_proto']))
+
+ def invoke(self, arg, from_tty):
+ arg_list = gdb.string_to_argv(arg)
+ if len(arg_list) == 0:
+ print("usage: ovs_dump_conntrack_conns <struct conntrack *> "
+ "{short}")
+ return
+
+ ct = gdb.parse_and_eval(arg_list[0]).cast(
+ gdb.lookup_type('struct conntrack').pointer())
+
+ for node in ForEachCMAP(ct["conns"], "struct conn", "cm_node"):
+ self.display_single_conn(node, short="short" in arg_list[1:])
+
+
#
# Initialize all GDB commands
#
@@ -1571,3 +1628,4 @@ CmdDumpSmap()
CmdDumpUdpifKeys()
CmdShowFDB()
CmdShowUpcall()
+CmdDumpDpConntrackConn()
--
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