From b22da3d8526a935aa31e086e63f60ff3246cb61c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 07:24:11 +0000
Subject: [PATCH] add stmac read mac form eeprom
---
kernel/tools/testing/scatterlist/main.c | 57 ++++++++++++++++++++++++++++++++++++++++-----------------
1 files changed, 40 insertions(+), 17 deletions(-)
diff --git a/kernel/tools/testing/scatterlist/main.c b/kernel/tools/testing/scatterlist/main.c
index 0a14641..f561aed 100644
--- a/kernel/tools/testing/scatterlist/main.c
+++ b/kernel/tools/testing/scatterlist/main.c
@@ -5,6 +5,15 @@
#define MAX_PAGES (64)
+struct test {
+ int alloc_ret;
+ unsigned num_pages;
+ unsigned *pfn;
+ unsigned size;
+ unsigned int max_seg;
+ unsigned int expected_segments;
+};
+
static void set_pages(struct page **pages, const unsigned *array, unsigned num)
{
unsigned int i;
@@ -17,20 +26,35 @@
#define pfn(...) (unsigned []){ __VA_ARGS__ }
+static void fail(struct test *test, struct sg_table *st, const char *cond)
+{
+ unsigned int i;
+
+ fprintf(stderr, "Failed on '%s'!\n\n", cond);
+
+ printf("size = %u, max segment = %u, expected nents = %u\nst->nents = %u, st->orig_nents= %u\n",
+ test->size, test->max_seg, test->expected_segments, st->nents,
+ st->orig_nents);
+
+ printf("%u input PFNs:", test->num_pages);
+ for (i = 0; i < test->num_pages; i++)
+ printf(" %x", test->pfn[i]);
+ printf("\n");
+
+ exit(1);
+}
+
+#define VALIDATE(cond, st, test) \
+ if (!(cond)) \
+ fail((test), (st), #cond);
+
int main(void)
{
const unsigned int sgmax = SCATTERLIST_MAX_SEGMENT;
- struct test {
- int alloc_ret;
- unsigned num_pages;
- unsigned *pfn;
- unsigned size;
- unsigned int max_seg;
- unsigned int expected_segments;
- } *test, tests[] = {
- { -EINVAL, 1, pfn(0), PAGE_SIZE, PAGE_SIZE + 1, 1 },
+ struct test *test, tests[] = {
{ -EINVAL, 1, pfn(0), PAGE_SIZE, 0, 1 },
- { -EINVAL, 1, pfn(0), PAGE_SIZE, sgmax + 1, 1 },
+ { 0, 1, pfn(0), PAGE_SIZE, PAGE_SIZE + 1, 1 },
+ { 0, 1, pfn(0), PAGE_SIZE, sgmax + 1, 1 },
{ 0, 1, pfn(0), PAGE_SIZE, sgmax, 1 },
{ 0, 1, pfn(0), 1, sgmax, 1 },
{ 0, 2, pfn(0, 1), 2 * PAGE_SIZE, sgmax, 1 },
@@ -55,20 +79,19 @@
for (i = 0, test = tests; test->expected_segments; test++, i++) {
struct page *pages[MAX_PAGES];
struct sg_table st;
- int ret;
+ struct scatterlist *sg;
set_pages(pages, test->pfn, test->num_pages);
- ret = __sg_alloc_table_from_pages(&st, pages, test->num_pages,
- 0, test->size, test->max_seg,
- GFP_KERNEL);
- assert(ret == test->alloc_ret);
+ sg = __sg_alloc_table_from_pages(&st, pages, test->num_pages, 0,
+ test->size, test->max_seg, NULL, 0, GFP_KERNEL);
+ assert(PTR_ERR_OR_ZERO(sg) == test->alloc_ret);
if (test->alloc_ret)
continue;
- assert(st.nents == test->expected_segments);
- assert(st.orig_nents == test->expected_segments);
+ VALIDATE(st.nents == test->expected_segments, &st, test);
+ VALIDATE(st.orig_nents == test->expected_segments, &st, test);
sg_free_table(&st);
}
--
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