Generate events for dropped upcalls and add the print the result.
Signed-off-by: Adrian Moreno <amorenoz@redhat.com>
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Without this patch, the chances of events being lost on highly loaded
systems increase.
Signed-off-by: Adrian Moreno <amorenoz@redhat.com>
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Added the dpif_recv:recv_upcall USDT probe, which is used by the
included upcall_monitor.py script. This script receives all upcall
packets sent by the kernel to ovs-vswitchd. By default, it will
show all upcall events, which looks something like this:
TIME CPU COMM PID DPIF_NAME TYPE PKT_LEN FLOW_KEY_LEN
5952147.003848809 2 handler4 1381158 system@ovs-system 0 98 132
5952147.003879643 2 handler4 1381158 system@ovs-system 0 70 160
5952147.003914924 2 handler4 1381158 system@ovs-system 0 98 152
It can also dump the packet and NetLink content, and if required,
the packets can also be written to a pcap file.
Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Acked-by: Paolo Valerio <pvalerio@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
