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selftests: tls: test skb copy under mem pressure and OOB

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Add a test which triggers mem pressure via OOB writes.

Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Link: https://patch.msgid.link/20250917002814.1743558-2-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Jakub Kicinski 2025-09-16 17:28:14 -07:00 • committed by Paolo Abeni
parent 0aeb54ac4c
commit 4c05c7ed88
1 changed files with 16 additions and 0 deletions
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16
tools/testing/selftests/net/tls.c
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@ -2770,6 +2770,22 @@ TEST_F(tls_err, poll_partial_rec_async)
}
}
/* Use OOB+large send to trigger copy mode due to memory pressure.
* OOB causes a short read.
*/
TEST_F(tls_err, oob_pressure)
{
char buf[1<<16];
int i;
memrnd(buf, sizeof(buf));
EXPECT_EQ(send(self->fd2, buf, 5, MSG_OOB), 5);
EXPECT_EQ(send(self->fd2, buf, sizeof(buf), 0), sizeof(buf));
for (i = 0; i < 64; i++)
EXPECT_EQ(send(self->fd2, buf, 5, MSG_OOB), 5);
}
TEST(non_established) {
struct tls12_crypto_info_aes_gcm_256 tls12;
struct sockaddr_in addr;