Commit 46ee1646 authored by Jeremy Kerr's avatar Jeremy Kerr Committed by Paolo Abeni
Browse files

net: mctp: test: Add extaddr routing output test 



Test that the routing code preserves the haddr data in a skb through an
input route operation.

Signed-off-by: default avatarJeremy Kerr <jk@codeconstruct.com.au>
Link: https://patch.msgid.link/20250702-dev-forwarding-v5-6-1468191da8a4@codeconstruct.com.au


Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent 96b341a8

net/mctp/test/route-test.c

+53 −0
Original line number Diff line number Diff line
@@ -1294,6 +1294,58 @@ static void mctp_test_route_output_key_create(struct kunit *test) 
	mctp_test_destroy_dev(dev);

}



static void mctp_test_route_extaddr_input(struct kunit *test)

{

	static const unsigned char haddr[] = { 0xaa, 0x55 };

	struct mctp_test_pktqueue tpq;

	struct mctp_skb_cb *cb, *cb2;

	const unsigned int len = 40;

	struct mctp_test_dev *dev;

	struct sk_buff *skb, *skb2;

	struct mctp_dst dst;

	struct mctp_hdr hdr;

	struct socket *sock;

	int rc;



	hdr.ver = 1;

	hdr.src = 10;

	hdr.dest = 8;

	hdr.flags_seq_tag = FL_S | FL_E | FL_TO;



	__mctp_route_test_init(test, &dev, &dst, &tpq, &sock, MCTP_NET_ANY);



	skb = mctp_test_create_skb(&hdr, len);

	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, skb);



	/* set our hardware addressing data */

	cb = mctp_cb(skb);

	memcpy(cb->haddr, haddr, sizeof(haddr));

	cb->halen = sizeof(haddr);



	mctp_test_skb_set_dev(skb, dev);



	rc = mctp_dst_input(&dst, skb);

	KUNIT_ASSERT_EQ(test, rc, 0);



	mctp_test_dst_release(&dst, &tpq);



	skb2 = skb_recv_datagram(sock->sk, MSG_DONTWAIT, &rc);

	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, skb2);

	KUNIT_ASSERT_EQ(test, skb2->len, len);



	cb2 = mctp_cb(skb2);



	/* Received SKB should have the hardware addressing as set above.

	 * We're likely to have the same actual cb here (ie., cb == cb2),

	 * but it's the comparison that we care about

	 */

	KUNIT_EXPECT_EQ(test, cb2->halen, sizeof(haddr));

	KUNIT_EXPECT_MEMEQ(test, cb2->haddr, haddr, sizeof(haddr));



	skb_free_datagram(sock->sk, skb2);

	mctp_test_destroy_dev(dev);

}



static struct kunit_case mctp_test_cases[] = {

	KUNIT_CASE_PARAM(mctp_test_fragment, mctp_frag_gen_params),

	KUNIT_CASE_PARAM(mctp_test_rx_input, mctp_rx_input_gen_params),
@@ -1310,6 +1362,7 @@ static struct kunit_case mctp_test_cases[] = { 
	KUNIT_CASE(mctp_test_fragment_flow),

	KUNIT_CASE(mctp_test_route_output_key_create),

	KUNIT_CASE(mctp_test_route_input_cloned_frag),

	KUNIT_CASE(mctp_test_route_extaddr_input),

	{}

};