77 lines · c
1// SPDX-License-Identifier: GPL-2.02/* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */3 4#include <sys/types.h>5#include <sys/socket.h>6#include <net/if.h>7 8#include "test_progs.h"9#include "network_helpers.h"10#include "decap_sanity.skel.h"11 12#define NS_TEST "decap_sanity_ns"13#define IPV6_IFACE_ADDR "face::1"14#define UDP_TEST_PORT 777715 16void test_decap_sanity(void)17{18 LIBBPF_OPTS(bpf_tc_hook, qdisc_hook, .attach_point = BPF_TC_EGRESS);19 LIBBPF_OPTS(bpf_tc_opts, tc_attach);20 struct nstoken *nstoken = NULL;21 struct decap_sanity *skel;22 struct sockaddr_in6 addr;23 socklen_t addrlen;24 char buf[128] = {};25 int sockfd, err;26 27 skel = decap_sanity__open_and_load();28 if (!ASSERT_OK_PTR(skel, "skel open_and_load"))29 return;30 31 SYS(fail, "ip netns add %s", NS_TEST);32 SYS(fail, "ip -net %s -6 addr add %s/128 dev lo nodad", NS_TEST, IPV6_IFACE_ADDR);33 SYS(fail, "ip -net %s link set dev lo up", NS_TEST);34 35 nstoken = open_netns(NS_TEST);36 if (!ASSERT_OK_PTR(nstoken, "open_netns"))37 goto fail;38 39 qdisc_hook.ifindex = if_nametoindex("lo");40 if (!ASSERT_GT(qdisc_hook.ifindex, 0, "if_nametoindex lo"))41 goto fail;42 43 err = bpf_tc_hook_create(&qdisc_hook);44 if (!ASSERT_OK(err, "create qdisc hook"))45 goto fail;46 47 tc_attach.prog_fd = bpf_program__fd(skel->progs.decap_sanity);48 err = bpf_tc_attach(&qdisc_hook, &tc_attach);49 if (!ASSERT_OK(err, "attach filter"))50 goto fail;51 52 addrlen = sizeof(addr);53 err = make_sockaddr(AF_INET6, IPV6_IFACE_ADDR, UDP_TEST_PORT,54 (void *)&addr, &addrlen);55 if (!ASSERT_OK(err, "make_sockaddr"))56 goto fail;57 sockfd = socket(AF_INET6, SOCK_DGRAM, 0);58 if (!ASSERT_NEQ(sockfd, -1, "socket"))59 goto fail;60 err = sendto(sockfd, buf, sizeof(buf), 0, (void *)&addr, addrlen);61 close(sockfd);62 if (!ASSERT_EQ(err, sizeof(buf), "send"))63 goto fail;64 65 ASSERT_TRUE(skel->bss->init_csum_partial, "init_csum_partial");66 ASSERT_TRUE(skel->bss->final_csum_none, "final_csum_none");67 ASSERT_FALSE(skel->bss->broken_csum_start, "broken_csum_start");68 69fail:70 if (nstoken) {71 bpf_tc_hook_destroy(&qdisc_hook);72 close_netns(nstoken);73 }74 SYS_NOFAIL("ip netns del " NS_TEST);75 decap_sanity__destroy(skel);76}77