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From: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
To: Feifei Wang <Feifei.Wang2@arm.com>, Konstantin Ananyev
<konstantin.ananyev@intel.com>, Olivier Matz <olivier.matz@6wind.com>, Gavin
Hu <Gavin.Hu@arm.com>
CC: "dev@dpdk.org" <dev@dpdk.org>, nd <nd@arm.com>, Feifei Wang
<Feifei.Wang2@arm.com>, "stable@dpdk.org" <stable@dpdk.org>,
"david.marchand@redhat.com" <david.marchand@redhat.com>, Honnappa Nagarahalli
<Honnappa.Nagarahalli@arm.com>, nd <nd@arm.com>
Thread-Topic: [PATCH v3 5/6] test/ring: fix wrong size used in memcmp
Thread-Index: AQHWiFZD7r0nh53Huk2MslJWXXFgdKlnkFGw
Date: Mon, 14 Sep 2020 04:37:46 +0000
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References: <20200729063105.11299-1-feifei.wang2@arm.com>
<20200911161002.19816-1-feifei.wang2@arm.com>
<20200911161002.19816-6-feifei.wang2@arm.com>
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Subject: Re: [dpdk-dev] [PATCH v3 5/6] test/ring: fix wrong size used in
memcmp
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<snip>
>=20
> When using memcmp function to check data, the third param should be the
> size of all elements, rather than the number of the elements.
>=20
> Furthermore, do code clean up by moving repeated code inside
> 'test_ring_mem_cmp' function to validate data and print information of
> enqueue/dequeue elements if validation fails.
This patch is fixing 2 things. But only the memcmp issue need to be backpor=
ted to stable. I would prefer to split this into 2 and mark only the memcmp=
commit to be backported.
Hi David,
Do you have a different opinion here?
>=20
> Fixes: a9fe152363e2 ("test/ring: add custom element size functional tests=
")
> Cc: honnappa.nagarahalli@arm.com
> Cc: stable@dpdk.org
>=20
> Signed-off-by: Feifei Wang <feifei.wang2@arm.com>
> Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com>
> Reviewed-by: Phil Yang <phil.yang@arm.com>
> Reviewed-by: Dharmik Thakkar <dharmik.thakkar@arm.com>
> ---
> app/test/test_ring.c | 59 ++++++++++++++++++++------------------------
> 1 file changed, 27 insertions(+), 32 deletions(-)
>=20
> diff --git a/app/test/test_ring.c b/app/test/test_ring.c index
> 811adc523..4a2bd39fc 100644
> --- a/app/test/test_ring.c
> +++ b/app/test/test_ring.c
> @@ -258,6 +258,21 @@ test_ring_mem_init(void *obj, unsigned int count, in=
t
> esize)
> ((uint32_t *)obj)[i] =3D i;
> }
>=20
> +static int
> +test_ring_mem_cmp(void *src, void *dst, unsigned int size) {
> + int ret;
> +
> + ret =3D memcmp(src, dst, size);
> + if (ret) {
> + rte_hexdump(stdout, "src", src, size);
> + rte_hexdump(stdout, "dst", dst, size);
> + printf("data after dequeue is not the same\n");
> + }
> +
> + return ret;
> +}
> +
> static void
> test_ring_print_test_string(const char *istr, unsigned int api_type, int=
esize)
> { @@ -383,7 +398,7 @@ test_ring_burst_bulk_tests1(unsigned int test_idx)
> struct rte_ring *r;
> void **src =3D NULL, **cur_src =3D NULL, **dst =3D NULL, **cur_dst =3D =
NULL;
> int ret;
> - unsigned int i, j;
> + unsigned int i, j, temp_sz;
> int rand;
> const unsigned int rsz =3D RING_SIZE - 1;
>=20
> @@ -444,7 +459,11 @@ test_ring_burst_bulk_tests1(unsigned int test_idx)
> TEST_RING_VERIFY(rte_ring_empty(r));
>=20
> /* check data */
> - TEST_RING_VERIFY(memcmp(src, dst, rsz) =3D=3D 0);
> + temp_sz =3D rsz * sizeof(void *);
> + if (esize[i] !=3D -1)
> + temp_sz =3D rsz * esize[i];
> + TEST_RING_VERIFY(test_ring_mem_cmp(src, dst,
> + temp_sz) =3D=3D 0);
> }
>=20
> /* Free memory before test completed */ @@ -538,12 +557,8
> @@ test_ring_burst_bulk_tests2(unsigned int test_idx)
> cur_dst =3D test_ring_inc_ptr(cur_dst, esize[i], MAX_BULK);
>=20
> /* check data */
> - if (memcmp(src, dst, cur_dst - dst)) {
> - rte_hexdump(stdout, "src", src, cur_src - src);
> - rte_hexdump(stdout, "dst", dst, cur_dst - dst);
> - printf("data after dequeue is not the same\n");
> + if (test_ring_mem_cmp(src, dst, RTE_PTR_DIFF(cur_dst, dst)))
> goto fail;
> - }
>=20
> /* Free memory before test completed */
> rte_ring_free(r);
> @@ -614,12 +629,8 @@ test_ring_burst_bulk_tests3(unsigned int test_idx)
> }
>=20
> /* check data */
> - if (memcmp(src, dst, cur_dst - dst)) {
> - rte_hexdump(stdout, "src", src, cur_src - src);
> - rte_hexdump(stdout, "dst", dst, cur_dst - dst);
> - printf("data after dequeue is not the same\n");
> + if (test_ring_mem_cmp(src, dst, RTE_PTR_DIFF(cur_dst, dst)))
> goto fail;
> - }
>=20
> /* Free memory before test completed */
> rte_ring_free(r);
> @@ -747,12 +758,8 @@ test_ring_burst_bulk_tests4(unsigned int test_idx)
> goto fail;
>=20
> /* check data */
> - if (memcmp(src, dst, cur_dst - dst)) {
> - rte_hexdump(stdout, "src", src, cur_src - src);
> - rte_hexdump(stdout, "dst", dst, cur_dst - dst);
> - printf("data after dequeue is not the same\n");
> + if (test_ring_mem_cmp(src, dst, RTE_PTR_DIFF(cur_dst, dst)))
> goto fail;
> - }
>=20
> /* Free memory before test completed */
> rte_ring_free(r);
> @@ -857,12 +864,8 @@ test_ring_basic_ex(void)
> }
>=20
> /* check data */
> - if (memcmp(src, dst, cur_src - src)) {
> - rte_hexdump(stdout, "src", src, cur_src - src);
> - rte_hexdump(stdout, "dst", dst, cur_dst - dst);
> - printf("data after dequeue is not the same\n");
> + if (test_ring_mem_cmp(src, dst, RTE_PTR_DIFF(cur_src, src)))
> goto fail_test;
> - }
>=20
> /* Following tests use the configured flags to decide
> * SP/SC or MP/MC.
> @@ -909,12 +912,8 @@ test_ring_basic_ex(void)
> cur_dst =3D test_ring_inc_ptr(cur_dst, esize[i], 2);
>=20
> /* check data */
> - if (memcmp(src, dst, cur_dst - dst)) {
> - rte_hexdump(stdout, "src", src, cur_src - src);
> - rte_hexdump(stdout, "dst", dst, cur_dst - dst);
> - printf("data after dequeue is not the same\n");
> + if (test_ring_mem_cmp(src, dst, RTE_PTR_DIFF(cur_dst, dst)))
> goto fail_test;
> - }
>=20
> rte_ring_free(rp);
> rte_free(src);
> @@ -1047,12 +1046,8 @@ test_ring_with_exact_size(void)
> }
>=20
> /* check data */
> - if (memcmp(src, dst, cur_dst - dst)) {
> - rte_hexdump(stdout, "src", src, cur_src - src);
> - rte_hexdump(stdout, "dst", dst, cur_dst - dst);
> - printf("data after dequeue is not the same\n");
> + if (test_ring_mem_cmp(src, dst, RTE_PTR_DIFF(cur_dst, dst)))
> goto test_fail;
> - }
>=20
> rte_free(src_orig);
> rte_free(dst_orig);
> --
> 2.17.1