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selftests: iou-zcrx: Get the page size at runtime

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Use the API `sysconf()` to query page size at runtime, instead of using
hard code number 4096.

And use `posix_memalign` to allocate the page size aligned momory.

Signed-off-by: Haiyue Wang <haiyuewa@163.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: David Wei <dw@davidwei.uk>
Link: https://patch.msgid.link/20250419141044.10304-1-haiyuewa@163.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Haiyue Wang 2025-04-19 22:10:15 +08:00 committed by Jakub Kicinski
parent 5565acd1e6
commit df8cf32413
1 changed files with 15 additions and 8 deletions
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23
tools/testing/selftests/drivers/net/hw/iou-zcrx.c
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@ -37,8 +37,8 @@
#include <liburing.h>
#define PAGE_SIZE (4096)
#define AREA_SIZE (8192 * PAGE_SIZE)
static long page_size;
#define AREA_SIZE (8192 * page_size)
#define SEND_SIZE (512 * 4096)
#define min(a, b) \
({ \
@ -66,7 +66,7 @@ static int cfg_oneshot_recvs;
static int cfg_send_size = SEND_SIZE;
static struct sockaddr_in6 cfg_addr;
static char payload[SEND_SIZE] __attribute__((aligned(PAGE_SIZE)));
static char *payload;
static void *area_ptr;
static void *ring_ptr;
static size_t ring_size;
@ -114,8 +114,8 @@ static inline size_t get_refill_ring_size(unsigned int rq_entries)
ring_size = rq_entries * sizeof(struct io_uring_zcrx_rqe);
/* add space for the header (head/tail/etc.) */
ring_size += PAGE_SIZE;
return ALIGN_UP(ring_size, 4096);
ring_size += page_size;
return ALIGN_UP(ring_size, page_size);
}
static void setup_zcrx(struct io_uring *ring)
@ -219,7 +219,7 @@ static void process_accept(struct io_uring *ring, struct io_uring_cqe *cqe)
connfd = cqe->res;
if (cfg_oneshot)
add_recvzc_oneshot(ring, connfd, PAGE_SIZE);
add_recvzc_oneshot(ring, connfd, page_size);
else
add_recvzc(ring, connfd);
}
@ -245,7 +245,7 @@ static void process_recvzc(struct io_uring *ring, struct io_uring_cqe *cqe)
if (cfg_oneshot) {
if (cqe->res == 0 && cqe->flags == 0 && cfg_oneshot_recvs) {
add_recvzc_oneshot(ring, connfd, PAGE_SIZE);
add_recvzc_oneshot(ring, connfd, page_size);
cfg_oneshot_recvs--;
}
} else if (!(cqe->flags & IORING_CQE_F_MORE)) {
@ -370,7 +370,7 @@ static void usage(const char *filepath)
static void parse_opts(int argc, char **argv)
{
const int max_payload_len = sizeof(payload) -
const int max_payload_len = SEND_SIZE -
sizeof(struct ipv6hdr) -
sizeof(struct tcphdr) -
40 /* max tcp options */;
@ -443,6 +443,13 @@ int main(int argc, char **argv)
const char *cfg_test = argv[argc - 1];
int i;
page_size = sysconf(_SC_PAGESIZE);
if (page_size < 0)
return 1;
if (posix_memalign((void **)&payload, page_size, SEND_SIZE))
return 1;
parse_opts(argc, argv);
for (i = 0; i < SEND_SIZE; i++)