intel dpdk api test程序讲解 (dpdk库测试模块)
声明:此文档只做学习交流使用,请勿用作其他商业用途
author:朝阳_tonyE-mail : [email protected]
Create Date: 2013-8-5 9:58:56 Monday
Last Change: 2013-8-6 9:31:58 Tuesday
转载请注明出处：http://blog.csdn.net/linzhaolove
此文请结合intel dpdk源码去阅读，源码可以去http://dpdk.org/dev 网页中下载；更多官方文档请访问http://dpdk.org
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本文章基于intel dpdk 的源码1.3.1 版本进行讲解；
摘要
intel dpdk api提供了一个自身库测试模块，方便dpdk提供的各个库模块的独立测试；这个test程序的源码就在dpdk/app/test目录下；
1、test程序源码讲解
1)、源码位置
# ls app/test/
autotest_data.py test_cmdline_cirbuf.c test_eal_fs.c test_memcpy.c test_pmac_pm.h
autotest.py test_cmdline_etheraddr.c test_errno.c test_memcpy_perf.c test_prefetch.c
autotest_runner.py test_cmdline.h test_func_reentrancy.c test_memory.c test_ring.c
autotest_test_funcs.py test_cmdline_ipaddr.c test.h test_mempool.c test_rwlock.c
commands.c test_cmdline_lib.c test_hash.c test_mempool_perf.c test_spinlock.c
Makefile test_cmdline_num.c test_hash_perf.c test_memzone.c test_string_fns.c
process.h test_cmdline_portlist.c test_interrupts.c test_mp_secondary.c test_tailq.c
test_alarm.c test_cmdline_string.c test_logs.c test_pci.c test_timer.c
test_atomic.c test_cpuflags.c test_lpm.c test_per_lcore.c test_version.c
test_byteorder.c test_cycles.c test_lpm_routes.h test_pmac_acl.c
test.c test_debug.c test_malloc.c test_pmac_acl.h
test_cmdline.c test_eal_flags.c test_mbuf.c test_pmac_pm.c
其中主要的test.c文件时test模块的main所在；
2）、test程序main函数讲解
ret = rte_eal_init(argc, argv);rte_timer_subsystem_init();cl = cmdline_stdin_new(main_ctx, "RTE>>");cmdline_parse_ctx_t main_ctx[] = {
(cmdline_parse_inst_t *)&cmd_autotest,
(cmdline_parse_inst_t *)&cmd_dump,
(cmdline_parse_inst_t *)&cmd_dump_one,
(cmdline_parse_inst_t *)&cmd_set_ring,
(cmdline_parse_inst_t *)&cmd_quit,
NULL,
};
cmdline_parse_inst_t cmd_autotest = {
.f = cmd_autotest_parsed, /* function to call */
.data = NULL, /* 2nd arg of func */
.help_str = "launch autotest",
.tokens = { /* token list, NULL terminated */
(void *)&cmd_autotest_autotest,
NULL,
},
};
if (all || !strcmp(res->autotest, "atomic_autotest"))
ret |= test_atomic();
if (all || !strcmp(res->autotest, "malloc_autotest"))
ret |= test_malloc();
if (all || !strcmp(res->autotest, "spinlock_autotest"))
ret |= test_spinlock();
cmdline_interact(cl);
cmdline_stdin_exit(cl);
2、test程序编译运行测试
1）、test程序编译
make -C x86_64-default-linuxapp-gcc/# ls x86_64-default-linuxapp-gcc/app/
cmdline_test dump_cfg test testpmd
cmdline_test.map dump_cfg.map test.map testpmd.map当然你也可以执行
make -C app/test# ls app/test/build/app/
test test.map
2）、test程序运行
./x86_64-default-linuxapp-gcc/app/test -c 1f -n 4-c 1f 指定5个core分给dpdk使用；
-n4 指定内存4通道， 我到目前还不知道这个4通道的用途，dpdk是内存通道和rank的拓展，希望有高手指点？？？？
运行后的输出，我只摘了一部分输出，大意是指分配了多少内存，和多少core等等；
EAL: Skip lcore 31 (not detected)
EAL: coremask set to 1f
EAL: Using native RDTSC
EAL: Setting up memory...
EAL: Ask a virtual area of 0x200000 bytes
EAL: Virtual area found at 0x7f6d9ea00000 (size = 0x200000)
EAL: Ask a virtual area of 0x7f000000 bytes
EAL: Virtual area found at 0x7f6d1f800000 (size = 0x7f000000)
EAL: Ask a virtual area of 0x400000 bytes
EAL: Virtual area found at 0x7f6d1f200000 (size = 0x400000)
EAL: Ask a virtual area of 0x600000 bytes
EAL: Virtual area found at 0x7f6d1ea00000 (size = 0x600000)
EAL: Ask a virtual area of 0x400000 bytes
EAL: Virtual area found at 0x7f6d1e400000 (size = 0x400000)
EAL: Requesting 1024 pages of size 2MB from socket 0
EAL: Increasing open file limit
func[rte_eal_tailq_lookup_by_idx]line[96] position
tailq_idx= 1 RTE_MAX_TAILQ=32
func[rte_eal_tailq_lookup_by_idx]line[96] position
tailq_idx= 2 RTE_MAX_TAILQ=32
func[rte_eal_tailq_lookup_by_idx]line[96] position
tailq_idx= 1 RTE_MAX_TAILQ=32
func[rte_eal_tailq_lookup_by_idx]line[96] position
tailq_idx= 0 RTE_MAX_TAILQ=32
EAL: Master core 0 is ready (tid=9f170800)
EAL: Core 3 is ready (tid=1bfef700)
EAL: Core 4 is ready (tid=1b7ee700)
EAL: Core 1 is ready (tid=1cff1700)
EAL: Core 2 is ready (tid=1c7f0700)
RTE>>
最后的RTE>> 是在执行命令初始化的时候，输入的提示信息；
我们应该输入什么命令测试呢，如果help看看；
RTE>>help
Command not found
RTE>>
在输入'?'问号后，看一下输出结果；
pci_autotest [Mul-choice STRING]: launch autotest
memory_autotest [Mul-choice STRING]: launch autotest
per_lcore_autotest [Mul-choice STRING]: launch autotest
spinlock_autotest [Mul-choice STRING]: launch autotest
rwlock_autotest [Mul-choice STRING]: launch autotest
atomic_autotest [Mul-choice STRING]: launch autotest
byteorder_autotest [Mul-choice STRING]: launch autotest
prefetch_autotest [Mul-choice STRING]: launch autotest
cycles_autotest [Mul-choice STRING]: launch autotest
logs_autotest [Mul-choice STRING]: launch autotest
memzone_autotest [Mul-choice STRING]: launch autotest
ring_autotest [Mul-choice STRING]: launch autotest
mempool_autotest [Mul-choice STRING]: launch autotest
mbuf_autotest [Mul-choice STRING]: launch autotest
timer_autotest [Mul-choice STRING]: launch autotest
malloc_autotest [Mul-choice STRING]: launch autotest
memcpy_autotest [Mul-choice STRING]: launch autotest
hash_autotest [Mul-choice STRING]: launch autotest
lpm_autotest [Mul-choice STRING]: launch autotest
debug_autotest [Mul-choice STRING]: launch autotest
errno_autotest [Mul-choice STRING]: launch autotest
tailq_autotest [Mul-choice STRING]: launch autotest
string_autotest [Mul-choice STRING]: launch autotest
然后我们再输入每行的前面字符串，就是指向相应模块的测试；
如输入version_autotest 看一下程序的版本号；
RTE>>version_autotest
Version string: 'RTE 1.3.1r2'
Test OK
RTE>>
test程序还挺高一条命令交all_autotests ，也就是进行所有的子模块测试，这命令执行起来会让程序运行很长时间；
技术水平有待提高，如果文章有错误的地方希望读者指正，相互交流，互相学习；O(∩_∩)O~