[lnst] TestPktgenTx: add multi-dev multi-thread support

[Jiří Pírko]

commit e91b935a75b8e92052441b553dc19d223061385f
Author: Jiri Pirko 
Date:   Wed Jun 29 17:33:08 2011 +0200

TestPktgenTx: add multi-dev multi-thread support

Signed-off-by: Jiri Pirko

Tests/TestPktgenTx.py |   54 +++++++++++++++++++++++++++++++++++++-----------
 1 files changed, 41 insertions(+), 13 deletions(-)
---
diff --git a/Tests/TestPktgenTx.py b/Tests/TestPktgenTx.py
index 5d68062..5e48f2c 100644
--- a/Tests/TestPktgenTx.py
+++ b/Tests/TestPktgenTx.py
@@ -12,6 +12,7 @@ [e-mail] (Jiri Pirko)

import logging
 import re
+import os
 from Common.TestsCommon import TestGeneric
 from Common.ExecCmd import exec_cmd, ExecCmdFail

@@ -22,9 +23,37 @@ class Pktgen:
     def set(self, val):
         exec_cmd("echo "%s" > %s" % (val, self._dev))

+class PktgenWorkers:
+    def __init__(self):
+        self._current = 0
+        self._cpunum = int(os.sysconf('SC_NPROCESSORS_ONLN'))
+        self._wrkrs = {}
+
+    def _init_current_wrkr(self):
+        num = self._current
+        wrkr = Pktgen("/proc/net/pktgen/kpktgend_%d" % (num))
+        wrkr.set("rem_device_all")
+        wrkr.set("max_before_softirq 5000")
+        self._wrkrs[num] = wrkr
+
+    def _get_wrkr(self):
+        num = self._current
+        if not num in self._wrkrs:
+            self._init_current_wrkr()
+        wrkr = self._wrkrs[num]
+        num += 1
+        if num == self._cpunum:
+            num = 0
+        self._current = num
+        return wrkr
+
+    def add_device(self, dev_name):
+        wrkr = self._get_wrkr()
+        wrkr.set("add_device %s" % dev_name)
+
 class TestPktgenTx(TestGeneric):
     def run(self):
-        dev_name = self.get_mopt("netdev_name")
+        dev_names = self.get_multi_mopt("netdev_name")
         addr = self.get_mopt("addr", opt_type="addr")
         hwaddr = self.get_mopt("hwaddr")
         vlan_tci = self.get_opt("vlan_tci", default=0)
@@ -32,20 +61,19 @@ class TestPktgenTx(TestGeneric):
         exec_cmd("modprobe pktgen")

pgctl = Pktgen("/proc/net/pktgen/pgctrl")
-        pgwrkr = Pktgen("/proc/net/pktgen/kpktgend_0")
-        pg = Pktgen("/proc/net/pktgen/%s" % dev_name)
+        pgwrkr = PktgenWorkers()

try:
-            pgwrkr.set("rem_device_all")
-            pgwrkr.set("add_device %s" % dev_name)
-            pgwrkr.set("max_before_softirq 5000")
-            pg.set("clone_skb 100000")
-            pg.set("pkt_size 60")
-            pg.set("dst %s" % addr)
-            pg.set("dst_mac %s" % hwaddr)
-            if vlan_tci:
-                pg.set("vlan_id %d" % vlan_tci)
-            pg.set("count 10000000")
+            for dev_name in dev_names:
+                pgwrkr.add_device(dev_name)
+                pg = Pktgen("/proc/net/pktgen/%s" % dev_name)
+                pg.set("clone_skb 100000")
+                pg.set("pkt_size 60")
+                pg.set("dst %s" % addr)
+                pg.set("dst_mac %s" % hwaddr)
+                if vlan_tci:
+                    pg.set("vlan_id %d" % vlan_tci)
+                pg.set("count 10000000")
             pgctl.set("start")
         except ExecCmdFail:
             return self.set_fail("pktgen failed")