78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <linux/in6.h>
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#include "test_progs.h"
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#include "network_helpers.h"
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#include "decap_sanity.skel.h"
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#define NS_TEST "decap_sanity_ns"
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#define IPV6_IFACE_ADDR "face::1"
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#define UDP_TEST_PORT 7777
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void test_decap_sanity(void)
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{
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LIBBPF_OPTS(bpf_tc_hook, qdisc_hook, .attach_point = BPF_TC_EGRESS);
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LIBBPF_OPTS(bpf_tc_opts, tc_attach);
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struct nstoken *nstoken = NULL;
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struct decap_sanity *skel;
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struct sockaddr_in6 addr;
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socklen_t addrlen;
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char buf[128] = {};
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int sockfd, err;
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skel = decap_sanity__open_and_load();
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if (!ASSERT_OK_PTR(skel, "skel open_and_load"))
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return;
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SYS(fail, "ip netns add %s", NS_TEST);
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SYS(fail, "ip -net %s -6 addr add %s/128 dev lo nodad", NS_TEST, IPV6_IFACE_ADDR);
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SYS(fail, "ip -net %s link set dev lo up", NS_TEST);
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nstoken = open_netns(NS_TEST);
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if (!ASSERT_OK_PTR(nstoken, "open_netns"))
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goto fail;
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qdisc_hook.ifindex = if_nametoindex("lo");
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if (!ASSERT_GT(qdisc_hook.ifindex, 0, "if_nametoindex lo"))
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goto fail;
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err = bpf_tc_hook_create(&qdisc_hook);
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if (!ASSERT_OK(err, "create qdisc hook"))
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goto fail;
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tc_attach.prog_fd = bpf_program__fd(skel->progs.decap_sanity);
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err = bpf_tc_attach(&qdisc_hook, &tc_attach);
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if (!ASSERT_OK(err, "attach filter"))
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goto fail;
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addrlen = sizeof(addr);
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err = make_sockaddr(AF_INET6, IPV6_IFACE_ADDR, UDP_TEST_PORT,
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(void *)&addr, &addrlen);
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if (!ASSERT_OK(err, "make_sockaddr"))
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goto fail;
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sockfd = socket(AF_INET6, SOCK_DGRAM, 0);
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if (!ASSERT_NEQ(sockfd, -1, "socket"))
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goto fail;
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err = sendto(sockfd, buf, sizeof(buf), 0, (void *)&addr, addrlen);
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close(sockfd);
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if (!ASSERT_EQ(err, sizeof(buf), "send"))
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goto fail;
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ASSERT_TRUE(skel->bss->init_csum_partial, "init_csum_partial");
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ASSERT_TRUE(skel->bss->final_csum_none, "final_csum_none");
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ASSERT_FALSE(skel->bss->broken_csum_start, "broken_csum_start");
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fail:
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if (nstoken) {
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bpf_tc_hook_destroy(&qdisc_hook);
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close_netns(nstoken);
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}
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SYS_NOFAIL("ip netns del " NS_TEST);
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decap_sanity__destroy(skel);
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}
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