forked from mirrors/linux
selftests/bpf: make flow dissector tests more extensible
Rewrite selftest to iterate over an array with input packet and expected flow_keys. This should make it easier to extend this test with additional cases without too much boilerplate. Signed-off-by: Stanislav Fomichev <sdf@google.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Stanislav Fomichev
Daniel Borkmann
parent
08de198c95
commit
a5cb33464e
1 changed files with 116 additions and 81 deletions
|
|
@ -2,7 +2,7 @@
|
|||
#include <test_progs.h>
|
||||
|
||||
#define CHECK_FLOW_KEYS(desc, got, expected) \
|
||||
CHECK(memcmp(&got, &expected, sizeof(got)) != 0, \
|
||||
CHECK_ATTR(memcmp(&got, &expected, sizeof(got)) != 0, \
|
||||
desc, \
|
||||
"nhoff=%u/%u " \
|
||||
"thoff=%u/%u " \
|
||||
|
|
@ -10,6 +10,7 @@
|
|||
"is_frag=%u/%u " \
|
||||
"is_first_frag=%u/%u " \
|
||||
"is_encap=%u/%u " \
|
||||
"ip_proto=0x%x/0x%x " \
|
||||
"n_proto=0x%x/0x%x " \
|
||||
"sport=%u/%u " \
|
||||
"dport=%u/%u\n", \
|
||||
|
|
@ -19,53 +20,32 @@
|
|||
got.is_frag, expected.is_frag, \
|
||||
got.is_first_frag, expected.is_first_frag, \
|
||||
got.is_encap, expected.is_encap, \
|
||||
got.ip_proto, expected.ip_proto, \
|
||||
got.n_proto, expected.n_proto, \
|
||||
got.sport, expected.sport, \
|
||||
got.dport, expected.dport)
|
||||
|
||||
static struct bpf_flow_keys pkt_v4_flow_keys = {
|
||||
.nhoff = 0,
|
||||
.thoff = sizeof(struct iphdr),
|
||||
.addr_proto = ETH_P_IP,
|
||||
.ip_proto = IPPROTO_TCP,
|
||||
.n_proto = __bpf_constant_htons(ETH_P_IP),
|
||||
};
|
||||
struct ipv4_pkt {
|
||||
struct ethhdr eth;
|
||||
struct iphdr iph;
|
||||
struct tcphdr tcp;
|
||||
} __packed;
|
||||
|
||||
static struct bpf_flow_keys pkt_v6_flow_keys = {
|
||||
.nhoff = 0,
|
||||
.thoff = sizeof(struct ipv6hdr),
|
||||
.addr_proto = ETH_P_IPV6,
|
||||
.ip_proto = IPPROTO_TCP,
|
||||
.n_proto = __bpf_constant_htons(ETH_P_IPV6),
|
||||
};
|
||||
|
||||
#define VLAN_HLEN 4
|
||||
|
||||
static struct {
|
||||
struct svlan_ipv4_pkt {
|
||||
struct ethhdr eth;
|
||||
__u16 vlan_tci;
|
||||
__u16 vlan_proto;
|
||||
struct iphdr iph;
|
||||
struct tcphdr tcp;
|
||||
} __packed pkt_vlan_v4 = {
|
||||
.eth.h_proto = __bpf_constant_htons(ETH_P_8021Q),
|
||||
.vlan_proto = __bpf_constant_htons(ETH_P_IP),
|
||||
.iph.ihl = 5,
|
||||
.iph.protocol = IPPROTO_TCP,
|
||||
.iph.tot_len = __bpf_constant_htons(MAGIC_BYTES),
|
||||
.tcp.urg_ptr = 123,
|
||||
.tcp.doff = 5,
|
||||
};
|
||||
} __packed;
|
||||
|
||||
static struct bpf_flow_keys pkt_vlan_v4_flow_keys = {
|
||||
.nhoff = VLAN_HLEN,
|
||||
.thoff = VLAN_HLEN + sizeof(struct iphdr),
|
||||
.addr_proto = ETH_P_IP,
|
||||
.ip_proto = IPPROTO_TCP,
|
||||
.n_proto = __bpf_constant_htons(ETH_P_IP),
|
||||
};
|
||||
struct ipv6_pkt {
|
||||
struct ethhdr eth;
|
||||
struct ipv6hdr iph;
|
||||
struct tcphdr tcp;
|
||||
} __packed;
|
||||
|
||||
static struct {
|
||||
struct dvlan_ipv6_pkt {
|
||||
struct ethhdr eth;
|
||||
__u16 vlan_tci;
|
||||
__u16 vlan_proto;
|
||||
|
|
@ -73,31 +53,97 @@ static struct {
|
|||
__u16 vlan_proto2;
|
||||
struct ipv6hdr iph;
|
||||
struct tcphdr tcp;
|
||||
} __packed pkt_vlan_v6 = {
|
||||
} __packed;
|
||||
|
||||
struct test {
|
||||
const char *name;
|
||||
union {
|
||||
struct ipv4_pkt ipv4;
|
||||
struct svlan_ipv4_pkt svlan_ipv4;
|
||||
struct ipv6_pkt ipv6;
|
||||
struct dvlan_ipv6_pkt dvlan_ipv6;
|
||||
} pkt;
|
||||
struct bpf_flow_keys keys;
|
||||
};
|
||||
|
||||
#define VLAN_HLEN 4
|
||||
|
||||
struct test tests[] = {
|
||||
{
|
||||
.name = "ipv4",
|
||||
.pkt.ipv4 = {
|
||||
.eth.h_proto = __bpf_constant_htons(ETH_P_IP),
|
||||
.iph.ihl = 5,
|
||||
.iph.protocol = IPPROTO_TCP,
|
||||
.iph.tot_len = __bpf_constant_htons(MAGIC_BYTES),
|
||||
.tcp.doff = 5,
|
||||
},
|
||||
.keys = {
|
||||
.nhoff = 0,
|
||||
.thoff = sizeof(struct iphdr),
|
||||
.addr_proto = ETH_P_IP,
|
||||
.ip_proto = IPPROTO_TCP,
|
||||
.n_proto = __bpf_constant_htons(ETH_P_IP),
|
||||
},
|
||||
},
|
||||
{
|
||||
.name = "ipv6",
|
||||
.pkt.ipv6 = {
|
||||
.eth.h_proto = __bpf_constant_htons(ETH_P_IPV6),
|
||||
.iph.nexthdr = IPPROTO_TCP,
|
||||
.iph.payload_len = __bpf_constant_htons(MAGIC_BYTES),
|
||||
.tcp.doff = 5,
|
||||
},
|
||||
.keys = {
|
||||
.nhoff = 0,
|
||||
.thoff = sizeof(struct ipv6hdr),
|
||||
.addr_proto = ETH_P_IPV6,
|
||||
.ip_proto = IPPROTO_TCP,
|
||||
.n_proto = __bpf_constant_htons(ETH_P_IPV6),
|
||||
},
|
||||
},
|
||||
{
|
||||
.name = "802.1q-ipv4",
|
||||
.pkt.svlan_ipv4 = {
|
||||
.eth.h_proto = __bpf_constant_htons(ETH_P_8021Q),
|
||||
.vlan_proto = __bpf_constant_htons(ETH_P_IP),
|
||||
.iph.ihl = 5,
|
||||
.iph.protocol = IPPROTO_TCP,
|
||||
.iph.tot_len = __bpf_constant_htons(MAGIC_BYTES),
|
||||
.tcp.doff = 5,
|
||||
},
|
||||
.keys = {
|
||||
.nhoff = VLAN_HLEN,
|
||||
.thoff = VLAN_HLEN + sizeof(struct iphdr),
|
||||
.addr_proto = ETH_P_IP,
|
||||
.ip_proto = IPPROTO_TCP,
|
||||
.n_proto = __bpf_constant_htons(ETH_P_IP),
|
||||
},
|
||||
},
|
||||
{
|
||||
.name = "802.1ad-ipv6",
|
||||
.pkt.dvlan_ipv6 = {
|
||||
.eth.h_proto = __bpf_constant_htons(ETH_P_8021AD),
|
||||
.vlan_proto = __bpf_constant_htons(ETH_P_8021Q),
|
||||
.vlan_proto2 = __bpf_constant_htons(ETH_P_IPV6),
|
||||
.iph.nexthdr = IPPROTO_TCP,
|
||||
.iph.payload_len = __bpf_constant_htons(MAGIC_BYTES),
|
||||
.tcp.urg_ptr = 123,
|
||||
.tcp.doff = 5,
|
||||
};
|
||||
|
||||
static struct bpf_flow_keys pkt_vlan_v6_flow_keys = {
|
||||
},
|
||||
.keys = {
|
||||
.nhoff = VLAN_HLEN * 2,
|
||||
.thoff = VLAN_HLEN * 2 + sizeof(struct ipv6hdr),
|
||||
.addr_proto = ETH_P_IPV6,
|
||||
.ip_proto = IPPROTO_TCP,
|
||||
.n_proto = __bpf_constant_htons(ETH_P_IPV6),
|
||||
},
|
||||
},
|
||||
};
|
||||
|
||||
void test_flow_dissector(void)
|
||||
{
|
||||
struct bpf_flow_keys flow_keys;
|
||||
struct bpf_object *obj;
|
||||
__u32 duration, retval;
|
||||
int err, prog_fd;
|
||||
__u32 size;
|
||||
|
||||
err = bpf_flow_load(&obj, "./bpf_flow.o", "flow_dissector",
|
||||
"jmp_table", &prog_fd);
|
||||
|
|
@ -106,35 +152,24 @@ void test_flow_dissector(void)
|
|||
return;
|
||||
}
|
||||
|
||||
err = bpf_prog_test_run(prog_fd, 10, &pkt_v4, sizeof(pkt_v4),
|
||||
&flow_keys, &size, &retval, &duration);
|
||||
CHECK(size != sizeof(flow_keys) || err || retval != 1, "ipv4",
|
||||
"err %d errno %d retval %d duration %d size %u/%lu\n",
|
||||
err, errno, retval, duration, size, sizeof(flow_keys));
|
||||
CHECK_FLOW_KEYS("ipv4_flow_keys", flow_keys, pkt_v4_flow_keys);
|
||||
for (int i = 0; i < ARRAY_SIZE(tests); i++) {
|
||||
struct bpf_flow_keys flow_keys;
|
||||
struct bpf_prog_test_run_attr tattr = {
|
||||
.prog_fd = prog_fd,
|
||||
.data_in = &tests[i].pkt,
|
||||
.data_size_in = sizeof(tests[i].pkt),
|
||||
.data_out = &flow_keys,
|
||||
};
|
||||
|
||||
err = bpf_prog_test_run(prog_fd, 10, &pkt_v6, sizeof(pkt_v6),
|
||||
&flow_keys, &size, &retval, &duration);
|
||||
CHECK(size != sizeof(flow_keys) || err || retval != 1, "ipv6",
|
||||
err = bpf_prog_test_run_xattr(&tattr);
|
||||
CHECK_ATTR(tattr.data_size_out != sizeof(flow_keys) ||
|
||||
err || tattr.retval != 1,
|
||||
tests[i].name,
|
||||
"err %d errno %d retval %d duration %d size %u/%lu\n",
|
||||
err, errno, retval, duration, size, sizeof(flow_keys));
|
||||
CHECK_FLOW_KEYS("ipv6_flow_keys", flow_keys, pkt_v6_flow_keys);
|
||||
|
||||
err = bpf_prog_test_run(prog_fd, 10, &pkt_vlan_v4, sizeof(pkt_vlan_v4),
|
||||
&flow_keys, &size, &retval, &duration);
|
||||
CHECK(size != sizeof(flow_keys) || err || retval != 1, "vlan_ipv4",
|
||||
"err %d errno %d retval %d duration %d size %u/%lu\n",
|
||||
err, errno, retval, duration, size, sizeof(flow_keys));
|
||||
CHECK_FLOW_KEYS("vlan_ipv4_flow_keys", flow_keys,
|
||||
pkt_vlan_v4_flow_keys);
|
||||
|
||||
err = bpf_prog_test_run(prog_fd, 10, &pkt_vlan_v6, sizeof(pkt_vlan_v6),
|
||||
&flow_keys, &size, &retval, &duration);
|
||||
CHECK(size != sizeof(flow_keys) || err || retval != 1, "vlan_ipv6",
|
||||
"err %d errno %d retval %d duration %d size %u/%lu\n",
|
||||
err, errno, retval, duration, size, sizeof(flow_keys));
|
||||
CHECK_FLOW_KEYS("vlan_ipv6_flow_keys", flow_keys,
|
||||
pkt_vlan_v6_flow_keys);
|
||||
err, errno, tattr.retval, tattr.duration,
|
||||
tattr.data_size_out, sizeof(flow_keys));
|
||||
CHECK_FLOW_KEYS(tests[i].name, flow_keys, tests[i].keys);
|
||||
}
|
||||
|
||||
bpf_object__close(obj);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue