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Date: Wed, 30 May 2018 14:56:10 +0900 From: Prashant Bhole <bhole_prashant_q7@....ntt.co.jp> To: Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, John Fastabend <john.fastabend@...il.com> Cc: Prashant Bhole <bhole_prashant_q7@....ntt.co.jp>, "David S . Miller" <davem@...emloft.net>, Shuah Khan <shuah@...nel.org>, netdev@...r.kernel.org, linux-kselftest@...r.kernel.org Subject: [PATCH bpf v3 4/5] selftests/bpf: test_sockmap, fix data verification When data verification is enabled, some tests fail because verification is done incorrectly. Following changes fix it. - Identify the size of data block to be verified - Reset verification counter when data block size is reached - Fixed the value printed in case of verfication failure Fixes: 16962b2404ac ("bpf: sockmap, add selftests") Acked-by: John Fastabend <john.fastabend@...il.com> Signed-off-by: Prashant Bhole <bhole_prashant_q7@....ntt.co.jp> --- tools/testing/selftests/bpf/test_sockmap.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/test_sockmap.c b/tools/testing/selftests/bpf/test_sockmap.c index 9d01f5c2abe2..664f268dc02a 100644 --- a/tools/testing/selftests/bpf/test_sockmap.c +++ b/tools/testing/selftests/bpf/test_sockmap.c @@ -337,8 +337,15 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt, int fd_flags = O_NONBLOCK; struct timeval timeout; float total_bytes; + int bytes_cnt = 0; + int chunk_sz; fd_set w; + if (opt->sendpage) + chunk_sz = iov_length * cnt; + else + chunk_sz = iov_length * iov_count; + fcntl(fd, fd_flags); total_bytes = (float)iov_count * (float)iov_length * (float)cnt; err = clock_gettime(CLOCK_MONOTONIC, &s->start); @@ -388,9 +395,14 @@ static int msg_loop(int fd, int iov_count, int iov_length, int cnt, errno = -EIO; fprintf(stderr, "detected data corruption @iov[%i]:%i %02x != %02x, %02x ?= %02x\n", - i, j, d[j], k - 1, d[j+1], k + 1); + i, j, d[j], k - 1, d[j+1], k); goto out_errno; } + bytes_cnt++; + if (bytes_cnt == chunk_sz) { + k = 0; + bytes_cnt = 0; + } recv--; } } -- 2.17.0
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