- return (0);
-}
-
-static int
-test_memzone_reserve_memory_in_smallest_segment(void)
-{
- const struct rte_memzone *mz;
- const struct rte_memseg *ms, *min_ms, *prev_min_ms;
- size_t min_len, prev_min_len;
- const struct rte_config *config;
- int i;
-
- config = rte_eal_get_configuration();
-
- min_ms = NULL; /*< smallest segment */
- prev_min_ms = NULL; /*< second smallest segment */
-
- /* find two smallest segments */
- for (i = 0; i < RTE_MAX_MEMSEG; i++) {
- ms = &config->mem_config->free_memseg[i];
-
- if (ms->addr == NULL)
- break;
- if (ms->len == 0)
- continue;
-
- if (min_ms == NULL)
- min_ms = ms;
- else if (min_ms->len > ms->len) {
- /* set last smallest to second last */
- prev_min_ms = min_ms;
-
- /* set new smallest */
- min_ms = ms;
- } else if ((prev_min_ms == NULL)
- || (prev_min_ms->len > ms->len))
- prev_min_ms = ms;
- }
-
- if (min_ms == NULL || prev_min_ms == NULL) {
- printf("Smallest segments not found!\n");
- return -1;
- }
-
- min_len = min_ms->len;
- prev_min_len = prev_min_ms->len;
-
- /* try reserving a memzone in the smallest memseg */
- mz = rte_memzone_reserve("smallest_mz", RTE_CACHE_LINE_SIZE,
- SOCKET_ID_ANY, 0);
- if (mz == NULL) {
- printf("Failed to reserve memory from smallest memseg!\n");
- return -1;
- }
- if (prev_min_ms->len != prev_min_len &&
- min_ms->len != min_len - RTE_CACHE_LINE_SIZE) {
- printf("Reserved memory from wrong memseg!\n");
- return -1;
- }
-
- return 0;
-}
-
-/* this test is a bit tricky, and thus warrants explanation.
- *
- * first, we find two smallest memsegs to conduct our experiments on.
- *
- * then, we bring them within alignment from each other: if second segment is
- * twice+ as big as the first, reserve memory from that segment; if second
- * segment is comparable in length to the first, then cut the first segment
- * down until it becomes less than half of second segment, and then cut down
- * the second segment to be within alignment of the first.
- *
- * then, we have to pass the following test: if segments are within alignment
- * of each other (that is, the difference is less than 256 bytes, which is what
- * our alignment will be), segment with smallest offset should be picked.
- *
- * we know that min_ms will be our smallest segment, so we need to make sure
- * that we adjust the alignments so that the bigger segment has smallest
- * alignment (in our case, smallest segment will have 64-byte alignment, while
- * bigger segment will have 128-byte alignment).
- */
-static int
-test_memzone_reserve_memory_with_smallest_offset(void)
-{
- const struct rte_memseg *ms, *min_ms, *prev_min_ms;
- size_t len, min_len, prev_min_len;
- const struct rte_config *config;
- int i, align;
-
- config = rte_eal_get_configuration();
-
- min_ms = NULL; /*< smallest segment */
- prev_min_ms = NULL; /*< second smallest segment */
- align = RTE_CACHE_LINE_SIZE * 4;
-
- /* find two smallest segments */
- for (i = 0; i < RTE_MAX_MEMSEG; i++) {
- ms = &config->mem_config->free_memseg[i];
-
- if (ms->addr == NULL)
- break;
- if (ms->len == 0)
- continue;
-
- if (min_ms == NULL)
- min_ms = ms;
- else if (min_ms->len > ms->len) {
- /* set last smallest to second last */
- prev_min_ms = min_ms;
-
- /* set new smallest */
- min_ms = ms;
- } else if ((prev_min_ms == NULL)
- || (prev_min_ms->len > ms->len)) {
- prev_min_ms = ms;
- }
- }
-
- if (min_ms == NULL || prev_min_ms == NULL) {
- printf("Smallest segments not found!\n");
- return -1;
- }
-
- prev_min_len = prev_min_ms->len;
- min_len = min_ms->len;
-
- /* if smallest segment is bigger than half of bigger segment */
- if (prev_min_ms->len - min_ms->len <= min_ms->len) {
-
- len = (min_ms->len * 2) - prev_min_ms->len;
-
- /* make sure final length is *not* aligned */
- while (((min_ms->addr_64 + len) & (align-1)) == 0)
- len += RTE_CACHE_LINE_SIZE;
-
- if (rte_memzone_reserve("dummy_mz1", len, SOCKET_ID_ANY, 0) == NULL) {
- printf("Cannot reserve memory!\n");
- return -1;
- }
-
- /* check if we got memory from correct segment */
- if (min_ms->len != min_len - len) {
- printf("Reserved memory from wrong segment!\n");
- return -1;
- }
- }
- /* if we don't need to touch smallest segment but it's aligned */
- else if ((min_ms->addr_64 & (align-1)) == 0) {
- if (rte_memzone_reserve("align_mz1", RTE_CACHE_LINE_SIZE,
- SOCKET_ID_ANY, 0) == NULL) {
- printf("Cannot reserve memory!\n");
- return -1;
- }
- if (min_ms->len != min_len - RTE_CACHE_LINE_SIZE) {
- printf("Reserved memory from wrong segment!\n");
- return -1;
- }
- }
-
- /* if smallest segment is less than half of bigger segment */
- if (prev_min_ms->len - min_ms->len > min_ms->len) {
- len = prev_min_ms->len - min_ms->len - align;
-
- /* make sure final length is aligned */
- while (((prev_min_ms->addr_64 + len) & (align-1)) != 0)
- len += RTE_CACHE_LINE_SIZE;
-
- if (rte_memzone_reserve("dummy_mz2", len, SOCKET_ID_ANY, 0) == NULL) {
- printf("Cannot reserve memory!\n");
- return -1;
- }
-
- /* check if we got memory from correct segment */
- if (prev_min_ms->len != prev_min_len - len) {
- printf("Reserved memory from wrong segment!\n");
- return -1;
- }
- }
- len = RTE_CACHE_LINE_SIZE;
-
-
-
- prev_min_len = prev_min_ms->len;
- min_len = min_ms->len;
-
- if (min_len >= prev_min_len || prev_min_len - min_len > (unsigned) align) {
- printf("Segments are of wrong lengths!\n");
- return -1;
- }
-
- /* try reserving from a bigger segment */
- if (rte_memzone_reserve_aligned("smallest_offset", len, SOCKET_ID_ANY, 0, align) ==
- NULL) {
- printf("Cannot reserve memory!\n");
- return -1;
- }
-
- /* check if we got memory from correct segment */
- if (min_ms->len != min_len && prev_min_ms->len != (prev_min_len - len)) {
- printf("Reserved memory from segment with smaller offset!\n");
- return -1;
- }
-
- return 0;
-}
-
-static int
-test_memzone_reserve_remainder(void)
-{
- const struct rte_memzone *mz1, *mz2;
- const struct rte_memseg *ms, *min_ms = NULL;
- size_t min_len;
- const struct rte_config *config;
- int i, align;
-
- min_len = 0;
- align = RTE_CACHE_LINE_SIZE;
-
- config = rte_eal_get_configuration();
-
- /* find minimum free contiguous length */
- for (i = 0; i < RTE_MAX_MEMSEG; i++) {
- ms = &config->mem_config->free_memseg[i];
-
- if (ms->addr == NULL)
- break;
- if (ms->len == 0)
- continue;
-
- if (min_len == 0 || ms->len < min_len) {
- min_len = ms->len;
- min_ms = ms;
-
- /* find maximum alignment this segment is able to hold */
- align = RTE_CACHE_LINE_SIZE;
- while ((ms->addr_64 & (align-1)) == 0) {
- align <<= 1;
- }
- }
- }
-
- if (min_ms == NULL) {
- printf("Minimal sized segment not found!\n");
- return -1;
- }
-
- /* try reserving min_len bytes with alignment - this should not affect our
- * memseg, the memory will be taken from a different one.
- */
- mz1 = rte_memzone_reserve_aligned("reserve_remainder_1", min_len,
- SOCKET_ID_ANY, 0, align);
- if (mz1 == NULL) {
- printf("Failed to reserve %zu bytes aligned on %i bytes\n", min_len,
- align);
- return -1;
- }
- if (min_ms->len != min_len) {
- printf("Memseg memory should not have been reserved!\n");
- return -1;
- }
-
- /* try reserving min_len bytes with less alignment - this should fill up
- * the segment.
- */
- mz2 = rte_memzone_reserve("reserve_remainder_2", min_len,
- SOCKET_ID_ANY, 0);
- if (mz2 == NULL) {
- printf("Failed to reserve %zu bytes\n", min_len);
- return -1;
- }
- if (min_ms->len != 0) {
- printf("Memseg memory should have been reserved!\n");
- return -1;
- }
-