685 lines
16 KiB
C
685 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <kunit/test.h>
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#include "utils.h"
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struct mctp_test_route {
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struct mctp_route rt;
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struct sk_buff_head pkts;
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};
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static int mctp_test_route_output(struct mctp_route *rt, struct sk_buff *skb)
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{
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struct mctp_test_route *test_rt = container_of(rt, struct mctp_test_route, rt);
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skb_queue_tail(&test_rt->pkts, skb);
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return 0;
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}
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/* local version of mctp_route_alloc() */
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static struct mctp_test_route *mctp_route_test_alloc(void)
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{
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struct mctp_test_route *rt;
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rt = kzalloc(sizeof(*rt), GFP_KERNEL);
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if (!rt)
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return NULL;
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INIT_LIST_HEAD(&rt->rt.list);
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refcount_set(&rt->rt.refs, 1);
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rt->rt.output = mctp_test_route_output;
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skb_queue_head_init(&rt->pkts);
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return rt;
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}
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static struct mctp_test_route *mctp_test_create_route(struct net *net,
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struct mctp_dev *dev,
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mctp_eid_t eid,
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unsigned int mtu)
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{
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struct mctp_test_route *rt;
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rt = mctp_route_test_alloc();
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if (!rt)
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return NULL;
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rt->rt.min = eid;
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rt->rt.max = eid;
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rt->rt.mtu = mtu;
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rt->rt.type = RTN_UNSPEC;
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if (dev)
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mctp_dev_hold(dev);
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rt->rt.dev = dev;
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list_add_rcu(&rt->rt.list, &net->mctp.routes);
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return rt;
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}
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static void mctp_test_route_destroy(struct kunit *test,
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struct mctp_test_route *rt)
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{
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unsigned int refs;
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rtnl_lock();
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list_del_rcu(&rt->rt.list);
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rtnl_unlock();
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skb_queue_purge(&rt->pkts);
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if (rt->rt.dev)
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mctp_dev_put(rt->rt.dev);
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refs = refcount_read(&rt->rt.refs);
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KUNIT_ASSERT_EQ_MSG(test, refs, 1, "route ref imbalance");
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kfree_rcu(&rt->rt, rcu);
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}
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static struct sk_buff *mctp_test_create_skb(const struct mctp_hdr *hdr,
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unsigned int data_len)
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{
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size_t hdr_len = sizeof(*hdr);
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struct sk_buff *skb;
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unsigned int i;
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u8 *buf;
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skb = alloc_skb(hdr_len + data_len, GFP_KERNEL);
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if (!skb)
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return NULL;
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memcpy(skb_put(skb, hdr_len), hdr, hdr_len);
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buf = skb_put(skb, data_len);
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for (i = 0; i < data_len; i++)
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buf[i] = i & 0xff;
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return skb;
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}
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static struct sk_buff *__mctp_test_create_skb_data(const struct mctp_hdr *hdr,
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const void *data,
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size_t data_len)
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{
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size_t hdr_len = sizeof(*hdr);
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struct sk_buff *skb;
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skb = alloc_skb(hdr_len + data_len, GFP_KERNEL);
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if (!skb)
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return NULL;
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memcpy(skb_put(skb, hdr_len), hdr, hdr_len);
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memcpy(skb_put(skb, data_len), data, data_len);
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return skb;
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}
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#define mctp_test_create_skb_data(h, d) \
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__mctp_test_create_skb_data(h, d, sizeof(*d))
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struct mctp_frag_test {
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unsigned int mtu;
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unsigned int msgsize;
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unsigned int n_frags;
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};
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static void mctp_test_fragment(struct kunit *test)
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{
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const struct mctp_frag_test *params;
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int rc, i, n, mtu, msgsize;
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struct mctp_test_route *rt;
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struct sk_buff *skb;
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struct mctp_hdr hdr;
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u8 seq;
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params = test->param_value;
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mtu = params->mtu;
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msgsize = params->msgsize;
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hdr.ver = 1;
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hdr.src = 8;
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hdr.dest = 10;
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hdr.flags_seq_tag = MCTP_HDR_FLAG_TO;
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skb = mctp_test_create_skb(&hdr, msgsize);
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KUNIT_ASSERT_TRUE(test, skb);
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rt = mctp_test_create_route(&init_net, NULL, 10, mtu);
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KUNIT_ASSERT_TRUE(test, rt);
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rc = mctp_do_fragment_route(&rt->rt, skb, mtu, MCTP_TAG_OWNER);
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KUNIT_EXPECT_FALSE(test, rc);
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n = rt->pkts.qlen;
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KUNIT_EXPECT_EQ(test, n, params->n_frags);
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for (i = 0;; i++) {
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struct mctp_hdr *hdr2;
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struct sk_buff *skb2;
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u8 tag_mask, seq2;
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bool first, last;
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first = i == 0;
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last = i == (n - 1);
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skb2 = skb_dequeue(&rt->pkts);
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if (!skb2)
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break;
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hdr2 = mctp_hdr(skb2);
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tag_mask = MCTP_HDR_TAG_MASK | MCTP_HDR_FLAG_TO;
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KUNIT_EXPECT_EQ(test, hdr2->ver, hdr.ver);
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KUNIT_EXPECT_EQ(test, hdr2->src, hdr.src);
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KUNIT_EXPECT_EQ(test, hdr2->dest, hdr.dest);
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KUNIT_EXPECT_EQ(test, hdr2->flags_seq_tag & tag_mask,
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hdr.flags_seq_tag & tag_mask);
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KUNIT_EXPECT_EQ(test,
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!!(hdr2->flags_seq_tag & MCTP_HDR_FLAG_SOM), first);
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KUNIT_EXPECT_EQ(test,
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!!(hdr2->flags_seq_tag & MCTP_HDR_FLAG_EOM), last);
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seq2 = (hdr2->flags_seq_tag >> MCTP_HDR_SEQ_SHIFT) &
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MCTP_HDR_SEQ_MASK;
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if (first) {
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seq = seq2;
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} else {
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seq++;
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KUNIT_EXPECT_EQ(test, seq2, seq & MCTP_HDR_SEQ_MASK);
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}
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if (!last)
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KUNIT_EXPECT_EQ(test, skb2->len, mtu);
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else
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KUNIT_EXPECT_LE(test, skb2->len, mtu);
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kfree_skb(skb2);
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}
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mctp_test_route_destroy(test, rt);
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}
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static const struct mctp_frag_test mctp_frag_tests[] = {
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{.mtu = 68, .msgsize = 63, .n_frags = 1},
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{.mtu = 68, .msgsize = 64, .n_frags = 1},
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{.mtu = 68, .msgsize = 65, .n_frags = 2},
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{.mtu = 68, .msgsize = 66, .n_frags = 2},
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{.mtu = 68, .msgsize = 127, .n_frags = 2},
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{.mtu = 68, .msgsize = 128, .n_frags = 2},
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{.mtu = 68, .msgsize = 129, .n_frags = 3},
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{.mtu = 68, .msgsize = 130, .n_frags = 3},
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};
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static void mctp_frag_test_to_desc(const struct mctp_frag_test *t, char *desc)
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{
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sprintf(desc, "mtu %d len %d -> %d frags",
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t->msgsize, t->mtu, t->n_frags);
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}
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KUNIT_ARRAY_PARAM(mctp_frag, mctp_frag_tests, mctp_frag_test_to_desc);
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struct mctp_rx_input_test {
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struct mctp_hdr hdr;
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bool input;
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};
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static void mctp_test_rx_input(struct kunit *test)
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{
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const struct mctp_rx_input_test *params;
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struct mctp_test_route *rt;
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struct mctp_test_dev *dev;
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struct sk_buff *skb;
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params = test->param_value;
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dev = mctp_test_create_dev();
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
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rt = mctp_test_create_route(&init_net, dev->mdev, 8, 68);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, rt);
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skb = mctp_test_create_skb(¶ms->hdr, 1);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, skb);
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__mctp_cb(skb);
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mctp_pkttype_receive(skb, dev->ndev, &mctp_packet_type, NULL);
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KUNIT_EXPECT_EQ(test, !!rt->pkts.qlen, params->input);
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mctp_test_route_destroy(test, rt);
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mctp_test_destroy_dev(dev);
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}
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#define RX_HDR(_ver, _src, _dest, _fst) \
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{ .ver = _ver, .src = _src, .dest = _dest, .flags_seq_tag = _fst }
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/* we have a route for EID 8 only */
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static const struct mctp_rx_input_test mctp_rx_input_tests[] = {
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{ .hdr = RX_HDR(1, 10, 8, 0), .input = true },
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{ .hdr = RX_HDR(1, 10, 9, 0), .input = false }, /* no input route */
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{ .hdr = RX_HDR(2, 10, 8, 0), .input = false }, /* invalid version */
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};
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static void mctp_rx_input_test_to_desc(const struct mctp_rx_input_test *t,
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char *desc)
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{
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sprintf(desc, "{%x,%x,%x,%x}", t->hdr.ver, t->hdr.src, t->hdr.dest,
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t->hdr.flags_seq_tag);
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}
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KUNIT_ARRAY_PARAM(mctp_rx_input, mctp_rx_input_tests,
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mctp_rx_input_test_to_desc);
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/* set up a local dev, route on EID 8, and a socket listening on type 0 */
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static void __mctp_route_test_init(struct kunit *test,
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struct mctp_test_dev **devp,
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struct mctp_test_route **rtp,
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struct socket **sockp)
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{
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struct sockaddr_mctp addr = {0};
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struct mctp_test_route *rt;
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struct mctp_test_dev *dev;
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struct socket *sock;
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int rc;
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dev = mctp_test_create_dev();
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
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rt = mctp_test_create_route(&init_net, dev->mdev, 8, 68);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, rt);
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rc = sock_create_kern(&init_net, AF_MCTP, SOCK_DGRAM, 0, &sock);
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KUNIT_ASSERT_EQ(test, rc, 0);
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addr.smctp_family = AF_MCTP;
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addr.smctp_network = MCTP_NET_ANY;
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addr.smctp_addr.s_addr = 8;
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addr.smctp_type = 0;
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rc = kernel_bind(sock, (struct sockaddr *)&addr, sizeof(addr));
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KUNIT_ASSERT_EQ(test, rc, 0);
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*rtp = rt;
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*devp = dev;
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*sockp = sock;
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}
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static void __mctp_route_test_fini(struct kunit *test,
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struct mctp_test_dev *dev,
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struct mctp_test_route *rt,
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struct socket *sock)
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{
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sock_release(sock);
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mctp_test_route_destroy(test, rt);
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mctp_test_destroy_dev(dev);
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}
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struct mctp_route_input_sk_test {
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struct mctp_hdr hdr;
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u8 type;
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bool deliver;
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};
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static void mctp_test_route_input_sk(struct kunit *test)
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{
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const struct mctp_route_input_sk_test *params;
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struct sk_buff *skb, *skb2;
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struct mctp_test_route *rt;
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struct mctp_test_dev *dev;
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struct socket *sock;
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int rc;
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params = test->param_value;
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__mctp_route_test_init(test, &dev, &rt, &sock);
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skb = mctp_test_create_skb_data(¶ms->hdr, ¶ms->type);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, skb);
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skb->dev = dev->ndev;
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__mctp_cb(skb);
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rc = mctp_route_input(&rt->rt, skb);
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if (params->deliver) {
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KUNIT_EXPECT_EQ(test, rc, 0);
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skb2 = skb_recv_datagram(sock->sk, MSG_DONTWAIT, &rc);
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KUNIT_EXPECT_NOT_ERR_OR_NULL(test, skb2);
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KUNIT_EXPECT_EQ(test, skb->len, 1);
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skb_free_datagram(sock->sk, skb2);
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} else {
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KUNIT_EXPECT_NE(test, rc, 0);
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skb2 = skb_recv_datagram(sock->sk, MSG_DONTWAIT, &rc);
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KUNIT_EXPECT_NULL(test, skb2);
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}
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__mctp_route_test_fini(test, dev, rt, sock);
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}
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#define FL_S (MCTP_HDR_FLAG_SOM)
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#define FL_E (MCTP_HDR_FLAG_EOM)
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#define FL_TO (MCTP_HDR_FLAG_TO)
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#define FL_T(t) ((t) & MCTP_HDR_TAG_MASK)
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static const struct mctp_route_input_sk_test mctp_route_input_sk_tests[] = {
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{ .hdr = RX_HDR(1, 10, 8, FL_S | FL_E | FL_TO), .type = 0, .deliver = true },
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{ .hdr = RX_HDR(1, 10, 8, FL_S | FL_E | FL_TO), .type = 1, .deliver = false },
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{ .hdr = RX_HDR(1, 10, 8, FL_S | FL_E), .type = 0, .deliver = false },
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{ .hdr = RX_HDR(1, 10, 8, FL_E | FL_TO), .type = 0, .deliver = false },
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{ .hdr = RX_HDR(1, 10, 8, FL_TO), .type = 0, .deliver = false },
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{ .hdr = RX_HDR(1, 10, 8, 0), .type = 0, .deliver = false },
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};
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static void mctp_route_input_sk_to_desc(const struct mctp_route_input_sk_test *t,
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char *desc)
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{
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sprintf(desc, "{%x,%x,%x,%x} type %d", t->hdr.ver, t->hdr.src,
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t->hdr.dest, t->hdr.flags_seq_tag, t->type);
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}
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KUNIT_ARRAY_PARAM(mctp_route_input_sk, mctp_route_input_sk_tests,
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mctp_route_input_sk_to_desc);
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struct mctp_route_input_sk_reasm_test {
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const char *name;
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struct mctp_hdr hdrs[4];
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int n_hdrs;
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int rx_len;
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};
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static void mctp_test_route_input_sk_reasm(struct kunit *test)
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{
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const struct mctp_route_input_sk_reasm_test *params;
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struct sk_buff *skb, *skb2;
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struct mctp_test_route *rt;
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struct mctp_test_dev *dev;
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struct socket *sock;
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int i, rc;
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u8 c;
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params = test->param_value;
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__mctp_route_test_init(test, &dev, &rt, &sock);
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for (i = 0; i < params->n_hdrs; i++) {
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c = i;
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skb = mctp_test_create_skb_data(¶ms->hdrs[i], &c);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, skb);
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skb->dev = dev->ndev;
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__mctp_cb(skb);
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rc = mctp_route_input(&rt->rt, skb);
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}
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skb2 = skb_recv_datagram(sock->sk, MSG_DONTWAIT, &rc);
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if (params->rx_len) {
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KUNIT_EXPECT_NOT_ERR_OR_NULL(test, skb2);
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KUNIT_EXPECT_EQ(test, skb2->len, params->rx_len);
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skb_free_datagram(sock->sk, skb2);
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} else {
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KUNIT_EXPECT_NULL(test, skb2);
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}
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__mctp_route_test_fini(test, dev, rt, sock);
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}
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#define RX_FRAG(f, s) RX_HDR(1, 10, 8, FL_TO | (f) | ((s) << MCTP_HDR_SEQ_SHIFT))
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static const struct mctp_route_input_sk_reasm_test mctp_route_input_sk_reasm_tests[] = {
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{
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.name = "single packet",
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.hdrs = {
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RX_FRAG(FL_S | FL_E, 0),
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},
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.n_hdrs = 1,
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.rx_len = 1,
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},
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{
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.name = "single packet, offset seq",
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.hdrs = {
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RX_FRAG(FL_S | FL_E, 1),
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},
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.n_hdrs = 1,
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.rx_len = 1,
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},
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{
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.name = "start & end packets",
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.hdrs = {
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RX_FRAG(FL_S, 0),
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RX_FRAG(FL_E, 1),
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},
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.n_hdrs = 2,
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.rx_len = 2,
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},
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{
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.name = "start & end packets, offset seq",
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.hdrs = {
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RX_FRAG(FL_S, 1),
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RX_FRAG(FL_E, 2),
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},
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.n_hdrs = 2,
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.rx_len = 2,
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},
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{
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.name = "start & end packets, out of order",
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.hdrs = {
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RX_FRAG(FL_E, 1),
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RX_FRAG(FL_S, 0),
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},
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.n_hdrs = 2,
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.rx_len = 0,
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},
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{
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.name = "start, middle & end packets",
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.hdrs = {
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RX_FRAG(FL_S, 0),
|
|
RX_FRAG(0, 1),
|
|
RX_FRAG(FL_E, 2),
|
|
},
|
|
.n_hdrs = 3,
|
|
.rx_len = 3,
|
|
},
|
|
{
|
|
.name = "missing seq",
|
|
.hdrs = {
|
|
RX_FRAG(FL_S, 0),
|
|
RX_FRAG(FL_E, 2),
|
|
},
|
|
.n_hdrs = 2,
|
|
.rx_len = 0,
|
|
},
|
|
{
|
|
.name = "seq wrap",
|
|
.hdrs = {
|
|
RX_FRAG(FL_S, 3),
|
|
RX_FRAG(FL_E, 0),
|
|
},
|
|
.n_hdrs = 2,
|
|
.rx_len = 2,
|
|
},
|
|
};
|
|
|
|
static void mctp_route_input_sk_reasm_to_desc(
|
|
const struct mctp_route_input_sk_reasm_test *t,
|
|
char *desc)
|
|
{
|
|
sprintf(desc, "%s", t->name);
|
|
}
|
|
|
|
KUNIT_ARRAY_PARAM(mctp_route_input_sk_reasm, mctp_route_input_sk_reasm_tests,
|
|
mctp_route_input_sk_reasm_to_desc);
|
|
|
|
struct mctp_route_input_sk_keys_test {
|
|
const char *name;
|
|
mctp_eid_t key_peer_addr;
|
|
mctp_eid_t key_local_addr;
|
|
u8 key_tag;
|
|
struct mctp_hdr hdr;
|
|
bool deliver;
|
|
};
|
|
|
|
/* test packet rx in the presence of various key configurations */
|
|
static void mctp_test_route_input_sk_keys(struct kunit *test)
|
|
{
|
|
const struct mctp_route_input_sk_keys_test *params;
|
|
struct mctp_test_route *rt;
|
|
struct sk_buff *skb, *skb2;
|
|
struct mctp_test_dev *dev;
|
|
struct mctp_sk_key *key;
|
|
struct netns_mctp *mns;
|
|
struct mctp_sock *msk;
|
|
struct socket *sock;
|
|
unsigned long flags;
|
|
int rc;
|
|
u8 c;
|
|
|
|
params = test->param_value;
|
|
|
|
dev = mctp_test_create_dev();
|
|
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
|
|
|
|
rt = mctp_test_create_route(&init_net, dev->mdev, 8, 68);
|
|
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, rt);
|
|
|
|
rc = sock_create_kern(&init_net, AF_MCTP, SOCK_DGRAM, 0, &sock);
|
|
KUNIT_ASSERT_EQ(test, rc, 0);
|
|
|
|
msk = container_of(sock->sk, struct mctp_sock, sk);
|
|
mns = &sock_net(sock->sk)->mctp;
|
|
|
|
/* set the incoming tag according to test params */
|
|
key = mctp_key_alloc(msk, params->key_local_addr, params->key_peer_addr,
|
|
params->key_tag, GFP_KERNEL);
|
|
|
|
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, key);
|
|
|
|
spin_lock_irqsave(&mns->keys_lock, flags);
|
|
mctp_reserve_tag(&init_net, key, msk);
|
|
spin_unlock_irqrestore(&mns->keys_lock, flags);
|
|
|
|
/* create packet and route */
|
|
c = 0;
|
|
skb = mctp_test_create_skb_data(¶ms->hdr, &c);
|
|
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, skb);
|
|
|
|
skb->dev = dev->ndev;
|
|
__mctp_cb(skb);
|
|
|
|
rc = mctp_route_input(&rt->rt, skb);
|
|
|
|
/* (potentially) receive message */
|
|
skb2 = skb_recv_datagram(sock->sk, MSG_DONTWAIT, &rc);
|
|
|
|
if (params->deliver)
|
|
KUNIT_EXPECT_NOT_ERR_OR_NULL(test, skb2);
|
|
else
|
|
KUNIT_EXPECT_PTR_EQ(test, skb2, NULL);
|
|
|
|
if (skb2)
|
|
skb_free_datagram(sock->sk, skb2);
|
|
|
|
mctp_key_unref(key);
|
|
__mctp_route_test_fini(test, dev, rt, sock);
|
|
}
|
|
|
|
static const struct mctp_route_input_sk_keys_test mctp_route_input_sk_keys_tests[] = {
|
|
{
|
|
.name = "direct match",
|
|
.key_peer_addr = 9,
|
|
.key_local_addr = 8,
|
|
.key_tag = 1,
|
|
.hdr = RX_HDR(1, 9, 8, FL_S | FL_E | FL_T(1)),
|
|
.deliver = true,
|
|
},
|
|
{
|
|
.name = "flipped src/dest",
|
|
.key_peer_addr = 8,
|
|
.key_local_addr = 9,
|
|
.key_tag = 1,
|
|
.hdr = RX_HDR(1, 9, 8, FL_S | FL_E | FL_T(1)),
|
|
.deliver = false,
|
|
},
|
|
{
|
|
.name = "peer addr mismatch",
|
|
.key_peer_addr = 9,
|
|
.key_local_addr = 8,
|
|
.key_tag = 1,
|
|
.hdr = RX_HDR(1, 10, 8, FL_S | FL_E | FL_T(1)),
|
|
.deliver = false,
|
|
},
|
|
{
|
|
.name = "tag value mismatch",
|
|
.key_peer_addr = 9,
|
|
.key_local_addr = 8,
|
|
.key_tag = 1,
|
|
.hdr = RX_HDR(1, 9, 8, FL_S | FL_E | FL_T(2)),
|
|
.deliver = false,
|
|
},
|
|
{
|
|
.name = "TO mismatch",
|
|
.key_peer_addr = 9,
|
|
.key_local_addr = 8,
|
|
.key_tag = 1,
|
|
.hdr = RX_HDR(1, 9, 8, FL_S | FL_E | FL_T(1) | FL_TO),
|
|
.deliver = false,
|
|
},
|
|
{
|
|
.name = "broadcast response",
|
|
.key_peer_addr = MCTP_ADDR_ANY,
|
|
.key_local_addr = 8,
|
|
.key_tag = 1,
|
|
.hdr = RX_HDR(1, 11, 8, FL_S | FL_E | FL_T(1)),
|
|
.deliver = true,
|
|
},
|
|
{
|
|
.name = "any local match",
|
|
.key_peer_addr = 12,
|
|
.key_local_addr = MCTP_ADDR_ANY,
|
|
.key_tag = 1,
|
|
.hdr = RX_HDR(1, 12, 8, FL_S | FL_E | FL_T(1)),
|
|
.deliver = true,
|
|
},
|
|
};
|
|
|
|
static void mctp_route_input_sk_keys_to_desc(
|
|
const struct mctp_route_input_sk_keys_test *t,
|
|
char *desc)
|
|
{
|
|
sprintf(desc, "%s", t->name);
|
|
}
|
|
|
|
KUNIT_ARRAY_PARAM(mctp_route_input_sk_keys, mctp_route_input_sk_keys_tests,
|
|
mctp_route_input_sk_keys_to_desc);
|
|
|
|
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),
|
|
KUNIT_CASE_PARAM(mctp_test_route_input_sk, mctp_route_input_sk_gen_params),
|
|
KUNIT_CASE_PARAM(mctp_test_route_input_sk_reasm,
|
|
mctp_route_input_sk_reasm_gen_params),
|
|
KUNIT_CASE_PARAM(mctp_test_route_input_sk_keys,
|
|
mctp_route_input_sk_keys_gen_params),
|
|
{}
|
|
};
|
|
|
|
static struct kunit_suite mctp_test_suite = {
|
|
.name = "mctp",
|
|
.test_cases = mctp_test_cases,
|
|
};
|
|
|
|
kunit_test_suite(mctp_test_suite);
|