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| author | Eelco Chaudron <echaudro@redhat.com> | 2022-12-22 10:12:12 +0100 |
|---|---|---|
| committer | Ilya Maximets <i.maximets@ovn.org> | 2023-01-06 14:42:14 +0100 |
| commit | 62e85106b4439faf28261ee0776d3d9f9736994e (patch) | |
| tree | e00d009460fefcb70c8d093b186f5bf6f2c84e18 /Documentation | |
| parent | 9736b971b519b725507116578d780d822755b2a6 (diff) | |
| download | openvswitch-62e85106b4439faf28261ee0776d3d9f9736994e.tar.gz | |
utilities: Add USDT script to monitor dpif netlink execute message queuing.
This patch adds the dpif_nl_exec_monitor.py script that will used the
existing dpif_netlink_operate__:op_flow_execute USDT probe to show
all DPIF_OP_EXECUTE operations being queued for transmission over
the netlink interface.
Here is an example, truncated output:
Display DPIF_OP_EXECUTE operations being queued for transmission...
TIME CPU COMM PID NL_SIZE
3124.516679897 1 ovs-vswitchd 8219 180
nlmsghdr : len = 0, type = 36, flags = 1, seq = 0, pid = 0
genlmsghdr: cmd = 3, version = 1, reserver = 0
ovs_header: dp_ifindex = 21
> Decode OVS_PACKET_ATTR_* TLVs:
nla_len 46, nla_type OVS_PACKET_ATTR_PACKET[1], data: 00 00 00...
nla_len 20, nla_type OVS_PACKET_ATTR_KEY[2], data: 08 00 02 00...
> Decode OVS_KEY_ATTR_* TLVs:
nla_len 8, nla_type OVS_KEY_ATTR_PRIORITY[2], data: 00 00...
nla_len 8, nla_type OVS_KEY_ATTR_SKB_MARK[15], data: 00 00...
nla_len 88, nla_type OVS_PACKET_ATTR_ACTIONS[3], data: 4c 00 03...
> Decode OVS_ACTION_ATTR_* TLVs:
nla_len 76, nla_type OVS_ACTION_ATTR_SET[3], data: 48 00...
> Decode OVS_TUNNEL_KEY_ATTR_* TLVs:
nla_len 12, nla_type OVS_TUNNEL_KEY_ATTR_ID[0], data:...
nla_len 20, nla_type OVS_TUNNEL_KEY_ATTR_IPV6_DST[13], ...
nla_len 5, nla_type OVS_TUNNEL_KEY_ATTR_TTL[4], data: 40
nla_len 4, nla_type OVS_TUNNEL_KEY_ATTR_DONT_FRAGMENT[5]...
nla_len 4, nla_type OVS_TUNNEL_KEY_ATTR_CSUM[6], data:
nla_len 6, nla_type OVS_TUNNEL_KEY_ATTR_TP_DST[10],...
nla_len 12, nla_type OVS_TUNNEL_KEY_ATTR_GENEVE_OPTS[8],...
nla_len 8, nla_type OVS_ACTION_ATTR_OUTPUT[1], data: 02 00 00 00
- Dumping OVS_PACKET_ATR_PACKET data:
###[ Ethernet ]###
dst = 00:00:00:00:ec:01
src = 04:f4:bc:28:57:00
type = IPv4
###[ IP ]###
version = 4
ihl = 5
tos = 0x0
len = 50
id = 0
flags =
frag = 0
ttl = 127
proto = icmp
chksum = 0x2767
src = 10.0.0.1
dst = 10.0.0.100
\options \
###[ ICMP ]###
type = echo-request
code = 0
chksum = 0xf7f3
id = 0x0
seq = 0xc
Acked-by: Adrian Moreno <amorenoz@redhat.com>
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/topics/usdt-probes.rst | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/topics/usdt-probes.rst b/Documentation/topics/usdt-probes.rst index 7ce19aaed..004817b1c 100644 --- a/Documentation/topics/usdt-probes.rst +++ b/Documentation/topics/usdt-probes.rst @@ -254,6 +254,7 @@ DPIF_OP_FLOW_EXECUTE operation as part of the dpif ``operate()`` callback. **Script references**: +- ``utilities/usdt-scripts/dpif_nl_exec_monitor.py`` - ``utilities/usdt-scripts/upcall_cost.py`` |