Commit 42cd96b7 authored by Yonghong Song's avatar Yonghong Song

add another bridge-router-bridge test (test_brb2)

  o router is implemented as a namespace, similar to test_brb.
  o using linux bridge to provide bridge functionality.
    In test_brb, a simple bpf program implemented limited
    bridge functionality.
  o on my local box, test_brb performance is roughly 12% better
    than test_brb2.
Signed-off-by: default avatarYonghong Song <yhs@plumgrid.com>
parent 5526c3db
......@@ -18,3 +18,5 @@ add_test(NAME py_test_trace3_c WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
COMMAND ${TEST_WRAPPER} py_trace3_c sudo ${CMAKE_CURRENT_SOURCE_DIR}/test_trace3.py test_trace3.c)
add_test(NAME py_test_brb WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
COMMAND ${TEST_WRAPPER} py_brb_c sudo ${CMAKE_CURRENT_SOURCE_DIR}/test_brb.py test_brb.c)
add_test(NAME py_test_brb2 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
COMMAND ${TEST_WRAPPER} py_brb2_c sudo ${CMAKE_CURRENT_SOURCE_DIR}/test_brb2.py test_brb2.c)
// Copyright (c) PLUMgrid, Inc.
// Licensed under the Apache License, Version 2.0 (the "License")
#include <bcc/proto.h>
// physical endpoint manager (pem) tables which connects VMs and bridges
// <ifindex_in, ifindex_out>
BPF_TABLE("hash", u32, u32, pem_dest, 256);
// <0, tx_pkts>
BPF_TABLE("array", u32, u32, pem_stats, 1);
BPF_EXPORT(pem)
int pem(struct __sk_buff *skb) {
u32 ifindex_in, *ifindex_p;
ifindex_in = skb->ingress_ifindex;
ifindex_p = pem_dest.lookup(&ifindex_in);
if (ifindex_p) {
#if 1
/* accumulate stats */
u32 index = 0;
u32 *value = pem_stats.lookup(&index);
if (value)
lock_xadd(value, 1);
#endif
bpf_clone_redirect(skb, *ifindex_p, 0);
}
return 0;
}
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