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utilities: Add netlink flow operation USDT probes and upcall_cost script.

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This patch adds a series of NetLink flow operation USDT probes.
These probes are in turn used in the upcall_cost Python script,
which in addition of some kernel tracepoints, give an insight into
the time spent on processing upcall.

Signed-off-by: Eelco Chaudron <echaudro@redhat.com>
Acked-by: Paolo Valerio <pvalerio@redhat.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
This commit is contained in:
Eelco Chaudron
2021-12-22 10:19:02 +01:00
committed by Ilya Maximets
parent 51ec98635e
commit 85d3785e6a
4 changed files with 1892 additions and 1 deletions
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16
lib/dpif-netlink.c
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@@ -56,6 +56,7 @@
#include "openvswitch/poll-loop.h"
#include "openvswitch/shash.h"
#include "openvswitch/thread.h"
#include "openvswitch/usdt-probes.h"
#include "openvswitch/vlog.h"
#include "packets.h"
#include "random.h"
@@ -2052,6 +2053,9 @@ dpif_netlink_operate__(struct dpif_netlink *dpif,
aux->txn.reply = &aux->reply;
}
dpif_netlink_flow_to_ofpbuf(&flow, &aux->request);
OVS_USDT_PROBE(dpif_netlink_operate__, op_flow_put,
dpif, put, &flow, &aux->request);
break;
case DPIF_OP_FLOW_DEL:
@@ -2062,6 +2066,9 @@ dpif_netlink_operate__(struct dpif_netlink *dpif,
aux->txn.reply = &aux->reply;
}
dpif_netlink_flow_to_ofpbuf(&flow, &aux->request);
OVS_USDT_PROBE(dpif_netlink_operate__, op_flow_del,
dpif, del, &flow, &aux->request);
break;
case DPIF_OP_EXECUTE:
@@ -2082,6 +2089,12 @@ dpif_netlink_operate__(struct dpif_netlink *dpif,
} else {
dpif_netlink_encode_execute(dpif->dp_ifindex, &op->execute,
&aux->request);
OVS_USDT_PROBE(dpif_netlink_operate__, op_flow_execute,
dpif, &op->execute,
dp_packet_data(op->execute.packet),
dp_packet_size(op->execute.packet),
&aux->request);
}
break;
@@ -2090,6 +2103,9 @@ dpif_netlink_operate__(struct dpif_netlink *dpif,
dpif_netlink_init_flow_get(dpif, get, &flow);
aux->txn.reply = get->buffer;
dpif_netlink_flow_to_ofpbuf(&flow, &aux->request);
OVS_USDT_PROBE(dpif_netlink_operate__, op_flow_get,
dpif, get, &flow, &aux->request);
break;
default: