@@ -46,6 +46,10 @@ struct lcore_params {
uint16_t test_secs;
struct rte_mbuf **srcs;
struct rte_mbuf **dsts;
+ struct rte_dma_sge *src_sges;
+ struct rte_dma_sge *dst_sges;
+ uint8_t src_ptrs;
+ uint8_t dst_ptrs;
volatile struct worker_info worker_info;
};
@@ -86,21 +90,31 @@ calc_result(uint32_t buf_size, uint32_t nr_buf, uint16_t nb_workers, uint16_t te
}
static void
-output_result(uint8_t scenario_id, uint32_t lcore_id, char *dma_name, uint16_t ring_size,
- uint16_t kick_batch, uint64_t ave_cycle, uint32_t buf_size, uint32_t nr_buf,
- float memory, float bandwidth, float mops, bool is_dma)
+output_result(struct test_configure *cfg, struct lcore_params *para,
+ uint16_t kick_batch, uint64_t ave_cycle, uint32_t buf_size,
+ uint32_t nr_buf, float memory, float bandwidth, float mops)
{
- if (is_dma)
- printf("lcore %u, DMA %s, DMA Ring Size: %u, Kick Batch Size: %u.\n",
- lcore_id, dma_name, ring_size, kick_batch);
- else
+ uint16_t ring_size = cfg->ring_size.cur;
+ uint8_t scenario_id = cfg->scenario_id;
+ uint32_t lcore_id = para->lcore_id;
+ char *dma_name = para->dma_name;
+
+ if (cfg->is_dma) {
+ printf("lcore %u, DMA %s, DMA Ring Size: %u, Kick Batch Size: %u", lcore_id,
+ dma_name, ring_size, kick_batch);
+ if (cfg->is_sg)
+ printf(" DMA src ptrs: %u, dst ptrs: %u",
+ para->src_ptrs, para->dst_ptrs);
+ printf(".\n");
+ } else {
printf("lcore %u\n", lcore_id);
+ }
printf("Average Cycles/op: %" PRIu64 ", Buffer Size: %u B, Buffer Number: %u, Memory: %.2lf MB, Frequency: %.3lf Ghz.\n",
ave_cycle, buf_size, nr_buf, memory, rte_get_timer_hz()/1000000000.0);
printf("Average Bandwidth: %.3lf Gbps, MOps: %.3lf\n", bandwidth, mops);
- if (is_dma)
+ if (cfg->is_dma)
snprintf(output_str[lcore_id], MAX_OUTPUT_STR_LEN, CSV_LINE_DMA_FMT,
scenario_id, lcore_id, dma_name, ring_size, kick_batch, buf_size,
nr_buf, memory, ave_cycle, bandwidth, mops);
@@ -130,7 +144,7 @@ cache_flush_buf(__rte_unused struct rte_mbuf **array,
/* Configuration of device. */
static void
-configure_dmadev_queue(uint32_t dev_id, uint32_t ring_size)
+configure_dmadev_queue(uint32_t dev_id, uint32_t ring_size, uint8_t ptrs_max)
{
uint16_t vchan = 0;
struct rte_dma_info info;
@@ -153,6 +167,10 @@ configure_dmadev_queue(uint32_t dev_id, uint32_t ring_size)
rte_exit(EXIT_FAILURE, "Error, no configured queues reported on device id. %u\n",
dev_id);
+ if (info.max_sges < ptrs_max)
+ rte_exit(EXIT_FAILURE, "Error, DMA ptrs more than supported by device id %u.\n",
+ dev_id);
+
if (rte_dma_start(dev_id) != 0)
rte_exit(EXIT_FAILURE, "Error with dma start.\n");
}
@@ -166,8 +184,12 @@ config_dmadevs(struct test_configure *cfg)
uint32_t i;
int dev_id;
uint16_t nb_dmadevs = 0;
+ uint8_t ptrs_max = 0;
char *dma_name;
+ if (cfg->is_sg)
+ ptrs_max = RTE_MAX(cfg->src_ptrs, cfg->dst_ptrs);
+
for (i = 0; i < ldm->cnt; i++) {
dma_name = ldm->dma_names[i];
dev_id = rte_dma_get_dev_id_by_name(dma_name);
@@ -177,7 +199,7 @@ config_dmadevs(struct test_configure *cfg)
}
ldm->dma_ids[i] = dev_id;
- configure_dmadev_queue(dev_id, ring_size);
+ configure_dmadev_queue(dev_id, ring_size, ptrs_max);
++nb_dmadevs;
}
@@ -217,7 +239,7 @@ do_dma_submit_and_poll(uint16_t dev_id, uint64_t *async_cnt,
}
static inline int
-do_dma_mem_copy(void *p)
+do_dma_plain_mem_copy(void *p)
{
struct lcore_params *para = (struct lcore_params *)p;
volatile struct worker_info *worker_info = &(para->worker_info);
@@ -270,6 +292,65 @@ do_dma_mem_copy(void *p)
return 0;
}
+static inline int
+do_dma_sg_mem_copy(void *p)
+{
+ struct lcore_params *para = (struct lcore_params *)p;
+ volatile struct worker_info *worker_info = &(para->worker_info);
+ struct rte_dma_sge *src_sges = para->src_sges;
+ struct rte_dma_sge *dst_sges = para->dst_sges;
+ const uint16_t kick_batch = para->kick_batch;
+ const uint8_t src_ptrs = para->src_ptrs;
+ const uint8_t dst_ptrs = para->dst_ptrs;
+ const uint16_t dev_id = para->dev_id;
+ uint32_t nr_buf = para->nr_buf;
+ uint64_t async_cnt = 0;
+ uint32_t poll_cnt = 0;
+ uint16_t nr_cpl;
+ uint32_t i, j;
+ int ret;
+
+ nr_buf = nr_buf / src_ptrs;
+ worker_info->stop_flag = false;
+ worker_info->ready_flag = true;
+
+ while (!worker_info->start_flag)
+ ;
+
+ while (1) {
+ j = 0;
+ for (i = 0; i < nr_buf; i++) {
+dma_copy:
+ ret = rte_dma_copy_sg(dev_id, 0,
+ &src_sges[i * src_ptrs], &dst_sges[j * dst_ptrs],
+ src_ptrs, dst_ptrs, 0);
+ if (unlikely(ret < 0)) {
+ if (ret == -ENOSPC) {
+ do_dma_submit_and_poll(dev_id, &async_cnt, worker_info);
+ goto dma_copy;
+ } else
+ error_exit(dev_id);
+ }
+ async_cnt++;
+ j++;
+
+ if ((async_cnt % kick_batch) == 0)
+ do_dma_submit_and_poll(dev_id, &async_cnt, worker_info);
+ }
+
+ if (worker_info->stop_flag)
+ break;
+ }
+
+ rte_dma_submit(dev_id, 0);
+ while ((async_cnt > 0) && (poll_cnt++ < POLL_MAX)) {
+ nr_cpl = rte_dma_completed(dev_id, 0, MAX_DMA_CPL_NB, NULL, NULL);
+ async_cnt -= nr_cpl;
+ }
+
+ return 0;
+}
+
static inline int
do_cpu_mem_copy(void *p)
{
@@ -303,8 +384,9 @@ do_cpu_mem_copy(void *p)
}
static int
-setup_memory_env(struct test_configure *cfg, struct rte_mbuf ***srcs,
- struct rte_mbuf ***dsts)
+setup_memory_env(struct test_configure *cfg,
+ struct rte_mbuf ***srcs, struct rte_mbuf ***dsts,
+ struct rte_dma_sge **src_sges, struct rte_dma_sge **dst_sges)
{
unsigned int buf_size = cfg->buf_size.cur;
unsigned int nr_sockets;
@@ -367,20 +449,50 @@ setup_memory_env(struct test_configure *cfg, struct rte_mbuf ***srcs,
memset(rte_pktmbuf_mtod((*dsts)[i], void *), 0, buf_size);
}
+ if (cfg->is_sg) {
+ uint8_t src_ptrs = cfg->src_ptrs;
+ uint8_t dst_ptrs = cfg->dst_ptrs;
+ uint32_t sglen_src, sglen_dst;
+
+ *src_sges = rte_zmalloc(NULL, nr_buf * sizeof(struct rte_dma_sge),
+ RTE_CACHE_LINE_SIZE);
+ if (*src_sges == NULL) {
+ printf("Error: src_sges array malloc failed.\n");
+ return -1;
+ }
+
+ *dst_sges = rte_zmalloc(NULL, nr_buf * sizeof(struct rte_dma_sge),
+ RTE_CACHE_LINE_SIZE);
+ if (*dst_sges == NULL) {
+ printf("Error: dst_sges array malloc failed.\n");
+ return -1;
+ }
+
+ sglen_src = buf_size / src_ptrs;
+ sglen_dst = buf_size / dst_ptrs;
+
+ for (i = 0; i < nr_buf; i++) {
+ (*src_sges)[i].addr = rte_pktmbuf_iova((*srcs)[i]);
+ (*src_sges)[i].length = sglen_src;
+ (*dst_sges)[i].addr = rte_pktmbuf_iova((*dsts)[i]);
+ (*dst_sges)[i].length = sglen_dst;
+ }
+ }
+
return 0;
}
int
-mem_copy_benchmark(struct test_configure *cfg, bool is_dma)
+mem_copy_benchmark(struct test_configure *cfg)
{
- uint32_t i;
+ uint32_t i, j;
uint32_t offset;
unsigned int lcore_id = 0;
+ struct rte_dma_sge *src_sges = NULL, *dst_sges = NULL;
struct rte_mbuf **srcs = NULL, **dsts = NULL;
struct lcore_dma_map_t *ldm = &cfg->lcore_dma_map;
unsigned int buf_size = cfg->buf_size.cur;
uint16_t kick_batch = cfg->kick_batch.cur;
- uint32_t nr_buf = cfg->nr_buf = (cfg->mem_size.cur * 1024 * 1024) / (cfg->buf_size.cur * 2);
uint16_t nb_workers = ldm->cnt;
uint16_t test_secs = cfg->test_secs;
float memory = 0;
@@ -388,12 +500,23 @@ mem_copy_benchmark(struct test_configure *cfg, bool is_dma)
uint32_t avg_cycles_total;
float mops, mops_total;
float bandwidth, bandwidth_total;
+ uint32_t nr_buf;
int ret = 0;
- if (setup_memory_env(cfg, &srcs, &dsts) < 0)
+ /* Align number of buffers according to workers count */
+ nr_buf = (cfg->mem_size.cur * 1024 * 1024) / (cfg->buf_size.cur * 2);
+ nr_buf = (nr_buf / nb_workers) * nb_workers;
+ if (cfg->is_sg) {
+ nr_buf /= nb_workers;
+ nr_buf = (nr_buf / cfg->src_ptrs) * cfg->src_ptrs;
+ nr_buf *= nb_workers;
+ }
+
+ cfg->nr_buf = nr_buf;
+ if (setup_memory_env(cfg, &srcs, &dsts, &src_sges, &dst_sges) < 0)
goto out;
- if (is_dma)
+ if (cfg->is_dma)
if (config_dmadevs(cfg) < 0)
goto out;
@@ -413,7 +536,7 @@ mem_copy_benchmark(struct test_configure *cfg, bool is_dma)
printf("lcore parameters malloc failure for lcore %d\n", lcore_id);
break;
}
- if (is_dma) {
+ if (cfg->is_dma) {
lcores[i]->dma_name = ldm->dma_names[i];
lcores[i]->dev_id = ldm->dma_ids[i];
lcores[i]->kick_batch = kick_batch;
@@ -427,10 +550,24 @@ mem_copy_benchmark(struct test_configure *cfg, bool is_dma)
lcores[i]->scenario_id = cfg->scenario_id;
lcores[i]->lcore_id = lcore_id;
- if (is_dma)
- rte_eal_remote_launch(do_dma_mem_copy, (void *)(lcores[i]), lcore_id);
- else
+ if (cfg->is_sg) {
+ lcores[i]->src_ptrs = cfg->src_ptrs;
+ lcores[i]->dst_ptrs = cfg->dst_ptrs;
+ lcores[i]->src_sges = src_sges + offset;
+ lcores[i]->dst_sges = dst_sges +
+ ((nr_buf / cfg->src_ptrs * cfg->dst_ptrs) / nb_workers) * i;
+ }
+
+ if (cfg->is_dma) {
+ if (!cfg->is_sg)
+ rte_eal_remote_launch(do_dma_plain_mem_copy, (void *)(lcores[i]),
+ lcore_id);
+ else
+ rte_eal_remote_launch(do_dma_sg_mem_copy, (void *)(lcores[i]),
+ lcore_id);
+ } else {
rte_eal_remote_launch(do_cpu_mem_copy, (void *)(lcores[i]), lcore_id);
+ }
}
while (1) {
@@ -462,13 +599,46 @@ mem_copy_benchmark(struct test_configure *cfg, bool is_dma)
rte_eal_mp_wait_lcore();
- for (i = 0; i < (nr_buf / nb_workers) * nb_workers; i++) {
- if (memcmp(rte_pktmbuf_mtod(srcs[i], void *),
- rte_pktmbuf_mtod(dsts[i], void *),
- cfg->buf_size.cur) != 0) {
- printf("Copy validation fails for buffer number %d\n", i);
- ret = -1;
- goto out;
+ if (!cfg->is_sg) {
+ for (i = 0; i < (nr_buf / nb_workers) * nb_workers; i++) {
+ if (memcmp(rte_pktmbuf_mtod(srcs[i], void *),
+ rte_pktmbuf_mtod(dsts[i], void *),
+ cfg->buf_size.cur) != 0) {
+ printf("Copy validation fails for buffer number %d\n", i);
+ ret = -1;
+ goto out;
+ }
+ }
+ } else {
+ size_t src_sz = buf_size / cfg->src_ptrs;
+ size_t dst_sz = buf_size / cfg->dst_ptrs;
+ uint8_t src[buf_size], dst[buf_size];
+ uint8_t *sbuf, *dbuf;
+
+ for (i = 0; i < (nr_buf / cfg->src_ptrs); i++) {
+ sbuf = src;
+ dbuf = dst;
+
+ for (j = 0; j < cfg->src_ptrs; j++) {
+ memcpy(sbuf,
+ rte_pktmbuf_mtod(srcs[i * cfg->src_ptrs + j], uint8_t *),
+ src_sz);
+ sbuf += src_sz;
+ }
+
+ for (j = 0; j < cfg->dst_ptrs; j++) {
+ memcpy(dbuf,
+ rte_pktmbuf_mtod(dsts[i * cfg->dst_ptrs + j], uint8_t *),
+ dst_sz);
+ dbuf += dst_sz;
+ }
+
+ if (memcmp(src, dst, buf_size) != 0) {
+ printf("SG Copy validation fails for buffer number %d\n",
+ i * cfg->src_ptrs);
+ ret = -1;
+ goto out;
+ }
}
}
@@ -479,10 +649,8 @@ mem_copy_benchmark(struct test_configure *cfg, bool is_dma)
calc_result(buf_size, nr_buf, nb_workers, test_secs,
lcores[i]->worker_info.test_cpl,
&memory, &avg_cycles, &bandwidth, &mops);
- output_result(cfg->scenario_id, lcores[i]->lcore_id,
- lcores[i]->dma_name, cfg->ring_size.cur, kick_batch,
- avg_cycles, buf_size, nr_buf / nb_workers, memory,
- bandwidth, mops, is_dma);
+ output_result(cfg, lcores[i], kick_batch, avg_cycles, buf_size,
+ nr_buf / nb_workers, memory, bandwidth, mops);
mops_total += mops;
bandwidth_total += bandwidth;
avg_cycles_total += avg_cycles;
@@ -511,13 +679,20 @@ mem_copy_benchmark(struct test_configure *cfg, bool is_dma)
rte_mempool_free(dst_pool);
dst_pool = NULL;
+ /* free sges for mbufs */
+ rte_free(src_sges);
+ src_sges = NULL;
+
+ rte_free(dst_sges);
+ dst_sges = NULL;
+
/* free the worker parameters */
for (i = 0; i < nb_workers; i++) {
rte_free(lcores[i]);
lcores[i] = NULL;
}
- if (is_dma) {
+ if (cfg->is_dma) {
for (i = 0; i < nb_workers; i++) {
printf("Stopping dmadev %d\n", ldm->dma_ids[i]);
rte_dma_stop(ldm->dma_ids[i]);
@@ -9,6 +9,8 @@
; "buf_size" denotes the memory size of a single operation.
; "dma_ring_size" denotes the dma ring buffer size. It should be must be a power of two, and between
; 64 and 4096.
+; "dma_ptrs_src" denotes number of source segments.
+; "dma_ptrs_dst" denotes number of destination segments.
; "kick_batch" denotes the dma operation batch size, and should be greater than 1 normally.
; The format for variables is variable=first,last,increment,ADD|MUL.
@@ -49,6 +51,21 @@ test_seconds=2
lcore_dma=lcore10@0000:00:04.2, lcore11@0000:00:04.3
eal_args=--in-memory --file-prefix=test
+[case2]
+type=DMA_MEM_COPY
+mem_size=10
+buf_size=64,8192,2,MUL
+dma_ring_size=1024
+dma_ptrs_src=4
+dma_ptrs_dst=1
+kick_batch=32
+src_numa_node=0
+dst_numa_node=0
+cache_flush=0
+test_seconds=2
+lcore_dma=lcore10@0000:00:04.2, lcore11@0000:00:04.3
+eal_args=--in-memory --file-prefix=test
+
[case2]
type=CPU_MEM_COPY
mem_size=10
@@ -93,10 +93,8 @@ run_test_case(struct test_configure *case_cfg)
switch (case_cfg->test_type) {
case TEST_TYPE_DMA_MEM_COPY:
- ret = mem_copy_benchmark(case_cfg, true);
- break;
case TEST_TYPE_CPU_MEM_COPY:
- ret = mem_copy_benchmark(case_cfg, false);
+ ret = mem_copy_benchmark(case_cfg);
break;
default:
printf("Unknown test type. %s\n", case_cfg->test_type_str);
@@ -325,7 +323,8 @@ load_configs(const char *path)
char section_name[CFG_NAME_LEN];
const char *case_type;
const char *lcore_dma;
- const char *mem_size_str, *buf_size_str, *ring_size_str, *kick_batch_str;
+ const char *mem_size_str, *buf_size_str, *ring_size_str, *kick_batch_str,
+ *src_ptrs_str, *dst_ptrs_str;
int args_nr, nb_vp;
bool is_dma;
@@ -367,6 +366,7 @@ load_configs(const char *path)
continue;
}
+ test_case->is_dma = is_dma;
test_case->src_numa_node = (int)atoi(rte_cfgfile_get_entry(cfgfile,
section_name, "src_numa_node"));
test_case->dst_numa_node = (int)atoi(rte_cfgfile_get_entry(cfgfile,
@@ -401,6 +401,32 @@ load_configs(const char *path)
} else if (args_nr == 4)
nb_vp++;
+ src_ptrs_str = rte_cfgfile_get_entry(cfgfile, section_name,
+ "dma_ptrs_src");
+ if (src_ptrs_str != NULL) {
+ test_case->src_ptrs = (int)atoi(rte_cfgfile_get_entry(cfgfile,
+ section_name, "dma_ptrs_src"));
+ }
+
+ dst_ptrs_str = rte_cfgfile_get_entry(cfgfile, section_name,
+ "dma_ptrs_dst");
+ if (dst_ptrs_str != NULL) {
+ test_case->dst_ptrs = (int)atoi(rte_cfgfile_get_entry(cfgfile,
+ section_name, "dma_ptrs_dst"));
+ }
+
+ if ((src_ptrs_str != NULL && dst_ptrs_str == NULL) ||
+ (src_ptrs_str == NULL && dst_ptrs_str != NULL)) {
+ printf("parse dma_ptrs_src, dma_ptrs_dst error in case %d.\n",
+ i + 1);
+ test_case->is_valid = false;
+ continue;
+ } else if (src_ptrs_str != NULL && dst_ptrs_str != NULL) {
+ test_case->is_sg = true;
+ } else {
+ test_case->is_sg = false;
+ }
+
kick_batch_str = rte_cfgfile_get_entry(cfgfile, section_name, "kick_batch");
args_nr = parse_entry(kick_batch_str, &test_case->kick_batch);
if (args_nr < 0) {
@@ -47,11 +47,14 @@ struct test_configure {
uint16_t dst_numa_node;
uint16_t opcode;
bool is_dma;
+ bool is_sg;
struct lcore_dma_map_t lcore_dma_map;
struct test_configure_entry mem_size;
struct test_configure_entry buf_size;
struct test_configure_entry ring_size;
struct test_configure_entry kick_batch;
+ uint8_t src_ptrs;
+ uint8_t dst_ptrs;
uint8_t cache_flush;
uint32_t nr_buf;
uint16_t test_secs;
@@ -59,6 +62,6 @@ struct test_configure {
uint8_t scenario_id;
};
-int mem_copy_benchmark(struct test_configure *cfg, bool is_dma);
+int mem_copy_benchmark(struct test_configure *cfg);
#endif /* MAIN_H */