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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-08-07 13:18:06 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-08-07 13:18:06 +0000
commit638a9e433ecd61e64761352dbec1fa4f5874c941 (patch)
treefdbff74a238d7a5a7d1cef071b7230bc064b9f25 /net/core/gso_test.c
parentReleasing progress-linux version 6.9.12-1~progress7.99u1. (diff)
downloadlinux-638a9e433ecd61e64761352dbec1fa4f5874c941.tar.xz
linux-638a9e433ecd61e64761352dbec1fa4f5874c941.zip
Merging upstream version 6.10.3.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'net/core/gso_test.c')
-rw-r--r--net/core/gso_test.c274
1 files changed, 0 insertions, 274 deletions
diff --git a/net/core/gso_test.c b/net/core/gso_test.c
deleted file mode 100644
index 358c44680d..0000000000
--- a/net/core/gso_test.c
+++ /dev/null
@@ -1,274 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-#include <kunit/test.h>
-#include <linux/skbuff.h>
-
-static const char hdr[] = "abcdefgh";
-#define GSO_TEST_SIZE 1000
-
-static void __init_skb(struct sk_buff *skb)
-{
- skb_reset_mac_header(skb);
- memcpy(skb_mac_header(skb), hdr, sizeof(hdr));
-
- /* skb_segment expects skb->data at start of payload */
- skb_pull(skb, sizeof(hdr));
- skb_reset_network_header(skb);
- skb_reset_transport_header(skb);
-
- /* proto is arbitrary, as long as not ETH_P_TEB or vlan */
- skb->protocol = htons(ETH_P_ATALK);
- skb_shinfo(skb)->gso_size = GSO_TEST_SIZE;
-}
-
-enum gso_test_nr {
- GSO_TEST_LINEAR,
- GSO_TEST_NO_GSO,
- GSO_TEST_FRAGS,
- GSO_TEST_FRAGS_PURE,
- GSO_TEST_GSO_PARTIAL,
- GSO_TEST_FRAG_LIST,
- GSO_TEST_FRAG_LIST_PURE,
- GSO_TEST_FRAG_LIST_NON_UNIFORM,
- GSO_TEST_GSO_BY_FRAGS,
-};
-
-struct gso_test_case {
- enum gso_test_nr id;
- const char *name;
-
- /* input */
- unsigned int linear_len;
- unsigned int nr_frags;
- const unsigned int *frags;
- unsigned int nr_frag_skbs;
- const unsigned int *frag_skbs;
-
- /* output as expected */
- unsigned int nr_segs;
- const unsigned int *segs;
-};
-
-static struct gso_test_case cases[] = {
- {
- .id = GSO_TEST_NO_GSO,
- .name = "no_gso",
- .linear_len = GSO_TEST_SIZE,
- .nr_segs = 1,
- .segs = (const unsigned int[]) { GSO_TEST_SIZE },
- },
- {
- .id = GSO_TEST_LINEAR,
- .name = "linear",
- .linear_len = GSO_TEST_SIZE + GSO_TEST_SIZE + 1,
- .nr_segs = 3,
- .segs = (const unsigned int[]) { GSO_TEST_SIZE, GSO_TEST_SIZE, 1 },
- },
- {
- .id = GSO_TEST_FRAGS,
- .name = "frags",
- .linear_len = GSO_TEST_SIZE,
- .nr_frags = 2,
- .frags = (const unsigned int[]) { GSO_TEST_SIZE, 1 },
- .nr_segs = 3,
- .segs = (const unsigned int[]) { GSO_TEST_SIZE, GSO_TEST_SIZE, 1 },
- },
- {
- .id = GSO_TEST_FRAGS_PURE,
- .name = "frags_pure",
- .nr_frags = 3,
- .frags = (const unsigned int[]) { GSO_TEST_SIZE, GSO_TEST_SIZE, 2 },
- .nr_segs = 3,
- .segs = (const unsigned int[]) { GSO_TEST_SIZE, GSO_TEST_SIZE, 2 },
- },
- {
- .id = GSO_TEST_GSO_PARTIAL,
- .name = "gso_partial",
- .linear_len = GSO_TEST_SIZE,
- .nr_frags = 2,
- .frags = (const unsigned int[]) { GSO_TEST_SIZE, 3 },
- .nr_segs = 2,
- .segs = (const unsigned int[]) { 2 * GSO_TEST_SIZE, 3 },
- },
- {
- /* commit 89319d3801d1: frag_list on mss boundaries */
- .id = GSO_TEST_FRAG_LIST,
- .name = "frag_list",
- .linear_len = GSO_TEST_SIZE,
- .nr_frag_skbs = 2,
- .frag_skbs = (const unsigned int[]) { GSO_TEST_SIZE, GSO_TEST_SIZE },
- .nr_segs = 3,
- .segs = (const unsigned int[]) { GSO_TEST_SIZE, GSO_TEST_SIZE, GSO_TEST_SIZE },
- },
- {
- .id = GSO_TEST_FRAG_LIST_PURE,
- .name = "frag_list_pure",
- .nr_frag_skbs = 2,
- .frag_skbs = (const unsigned int[]) { GSO_TEST_SIZE, GSO_TEST_SIZE },
- .nr_segs = 2,
- .segs = (const unsigned int[]) { GSO_TEST_SIZE, GSO_TEST_SIZE },
- },
- {
- /* commit 43170c4e0ba7: GRO of frag_list trains */
- .id = GSO_TEST_FRAG_LIST_NON_UNIFORM,
- .name = "frag_list_non_uniform",
- .linear_len = GSO_TEST_SIZE,
- .nr_frag_skbs = 4,
- .frag_skbs = (const unsigned int[]) { GSO_TEST_SIZE, 1, GSO_TEST_SIZE, 2 },
- .nr_segs = 4,
- .segs = (const unsigned int[]) { GSO_TEST_SIZE, GSO_TEST_SIZE, GSO_TEST_SIZE, 3 },
- },
- {
- /* commit 3953c46c3ac7 ("sk_buff: allow segmenting based on frag sizes") and
- * commit 90017accff61 ("sctp: Add GSO support")
- *
- * "there will be a cover skb with protocol headers and
- * children ones containing the actual segments"
- */
- .id = GSO_TEST_GSO_BY_FRAGS,
- .name = "gso_by_frags",
- .nr_frag_skbs = 4,
- .frag_skbs = (const unsigned int[]) { 100, 200, 300, 400 },
- .nr_segs = 4,
- .segs = (const unsigned int[]) { 100, 200, 300, 400 },
- },
-};
-
-static void gso_test_case_to_desc(struct gso_test_case *t, char *desc)
-{
- sprintf(desc, "%s", t->name);
-}
-
-KUNIT_ARRAY_PARAM(gso_test, cases, gso_test_case_to_desc);
-
-static void gso_test_func(struct kunit *test)
-{
- const int shinfo_size = SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
- struct sk_buff *skb, *segs, *cur, *next, *last;
- const struct gso_test_case *tcase;
- netdev_features_t features;
- struct page *page;
- int i;
-
- tcase = test->param_value;
-
- page = alloc_page(GFP_KERNEL);
- KUNIT_ASSERT_NOT_NULL(test, page);
- skb = build_skb(page_address(page), sizeof(hdr) + tcase->linear_len + shinfo_size);
- KUNIT_ASSERT_NOT_NULL(test, skb);
- __skb_put(skb, sizeof(hdr) + tcase->linear_len);
-
- __init_skb(skb);
-
- if (tcase->nr_frags) {
- unsigned int pg_off = 0;
-
- page = alloc_page(GFP_KERNEL);
- KUNIT_ASSERT_NOT_NULL(test, page);
- page_ref_add(page, tcase->nr_frags - 1);
-
- for (i = 0; i < tcase->nr_frags; i++) {
- skb_fill_page_desc(skb, i, page, pg_off, tcase->frags[i]);
- pg_off += tcase->frags[i];
- }
-
- KUNIT_ASSERT_LE(test, pg_off, PAGE_SIZE);
-
- skb->data_len = pg_off;
- skb->len += skb->data_len;
- skb->truesize += skb->data_len;
- }
-
- if (tcase->frag_skbs) {
- unsigned int total_size = 0, total_true_size = 0;
- struct sk_buff *frag_skb, *prev = NULL;
-
- for (i = 0; i < tcase->nr_frag_skbs; i++) {
- unsigned int frag_size;
-
- page = alloc_page(GFP_KERNEL);
- KUNIT_ASSERT_NOT_NULL(test, page);
-
- frag_size = tcase->frag_skbs[i];
- frag_skb = build_skb(page_address(page),
- frag_size + shinfo_size);
- KUNIT_ASSERT_NOT_NULL(test, frag_skb);
- __skb_put(frag_skb, frag_size);
-
- if (prev)
- prev->next = frag_skb;
- else
- skb_shinfo(skb)->frag_list = frag_skb;
- prev = frag_skb;
-
- total_size += frag_size;
- total_true_size += frag_skb->truesize;
- }
-
- skb->len += total_size;
- skb->data_len += total_size;
- skb->truesize += total_true_size;
-
- if (tcase->id == GSO_TEST_GSO_BY_FRAGS)
- skb_shinfo(skb)->gso_size = GSO_BY_FRAGS;
- }
-
- features = NETIF_F_SG | NETIF_F_HW_CSUM;
- if (tcase->id == GSO_TEST_GSO_PARTIAL)
- features |= NETIF_F_GSO_PARTIAL;
-
- /* TODO: this should also work with SG,
- * rather than hit BUG_ON(i >= nfrags)
- */
- if (tcase->id == GSO_TEST_FRAG_LIST_NON_UNIFORM)
- features &= ~NETIF_F_SG;
-
- segs = skb_segment(skb, features);
- if (IS_ERR(segs)) {
- KUNIT_FAIL(test, "segs error %pe", segs);
- goto free_gso_skb;
- } else if (!segs) {
- KUNIT_FAIL(test, "no segments");
- goto free_gso_skb;
- }
-
- last = segs->prev;
- for (cur = segs, i = 0; cur; cur = next, i++) {
- next = cur->next;
-
- KUNIT_ASSERT_EQ(test, cur->len, sizeof(hdr) + tcase->segs[i]);
-
- /* segs have skb->data pointing to the mac header */
- KUNIT_ASSERT_PTR_EQ(test, skb_mac_header(cur), cur->data);
- KUNIT_ASSERT_PTR_EQ(test, skb_network_header(cur), cur->data + sizeof(hdr));
-
- /* header was copied to all segs */
- KUNIT_ASSERT_EQ(test, memcmp(skb_mac_header(cur), hdr, sizeof(hdr)), 0);
-
- /* last seg can be found through segs->prev pointer */
- if (!next)
- KUNIT_ASSERT_PTR_EQ(test, cur, last);
-
- consume_skb(cur);
- }
-
- KUNIT_ASSERT_EQ(test, i, tcase->nr_segs);
-
-free_gso_skb:
- consume_skb(skb);
-}
-
-static struct kunit_case gso_test_cases[] = {
- KUNIT_CASE_PARAM(gso_test_func, gso_test_gen_params),
- {}
-};
-
-static struct kunit_suite gso_test_suite = {
- .name = "net_core_gso",
- .test_cases = gso_test_cases,
-};
-
-kunit_test_suite(gso_test_suite);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("KUnit tests for segmentation offload");