From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Hunt Subject: [PATCH] test: fix crash in pmd_perf_test Date: Mon, 23 Nov 2015 11:45:48 +0000 Message-ID: <1448279148-14283-1-git-send-email-david.hunt@intel.com> To: dev@dpdk.org Return-path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id 5612C8E90 for ; Mon, 23 Nov 2015 12:46:18 +0100 (CET) List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Fix crash in pmd_perf_test autotest (div by 0) when no packets received Also fixes the fact that the test passes even if exec_burst fails To repeat the issue: The system must be incorrectly set up so that all packets will be lost, i.e. no loopback cable, etc. This is an edge case, but still the test should not crash or pass when failing. run the test app RTE>> set_rxtx_sc poll_before_xmit RTE>> pmd_perf_autotest --snip-- > Generate 4096 packets @socket 1 > start to receive total expect 4096 > 4096 packets lost, IDLE 10000 times > Floating point exception (core dumped) Signed-off-by: David Hunt --- app/test/test_pmd_perf.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/app/test/test_pmd_perf.c b/app/test/test_pmd_perf.c index 8f55640..25b4d09 100644 --- a/app/test/test_pmd_perf.c +++ b/app/test/test_pmd_perf.c @@ -626,7 +626,10 @@ timeout: rte_free(pkts_burst); - return diff_tsc / total; + if (total > 0) + return diff_tsc / total; + else + return -1; } static int @@ -673,8 +676,10 @@ exec_burst(uint32_t flags, int lcore) /* wait for polling finished */ diff_tsc = rte_eal_wait_lcore(lcore); - if (diff_tsc < 0) + if (diff_tsc < 0) { + printf("exec_burst: Failed to measure cycles per packet\n"); return -1; + } printf("Result: %d cycles per packet\n", diff_tsc); @@ -811,7 +816,8 @@ test_pmd_perf(void) return -1; } else if (sc_flag == SC_BURST_POLL_FIRST || sc_flag == SC_BURST_XMIT_FIRST) - exec_burst(sc_flag, slave_id); + if (exec_burst(sc_flag, slave_id) < 0) + return -1; /* port tear down */ for (portid = 0; portid < nb_ports; portid++) { -- 2.1.0