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selftests/net: test classic bpf fanout mode

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Test PACKET_FANOUT_CBPF by inserting a cBPF program that selects a
socket by payload. Requires modifying the test program to send
packets with multiple payloads.

Also fix a bug in testing the return value of mmap()

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Willem de Bruijn
2015-08-14 22:31:36 -04:00
committed by David S. Miller
parent f2e520956a
commit 95e22792fa
2 changed files with 33 additions and 12 deletions
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16
tools/testing/selftests/net/psock_fanout.c
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@@ -19,6 +19,7 @@
* - PACKET_FANOUT_LB
* - PACKET_FANOUT_CPU
* - PACKET_FANOUT_ROLLOVER
* - PACKET_FANOUT_CBPF
*
* Todo:
* - functionality: PACKET_FANOUT_FLAG_DEFRAG
@@ -115,8 +116,8 @@ static char *sock_fanout_open_ring(int fd)
ring = mmap(0, req.tp_block_size * req.tp_block_nr,
PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (!ring) {
fprintf(stderr, "packetsock ring mmap\n");
if (ring == MAP_FAILED) {
perror("packetsock ring mmap");
exit(1);
}
@@ -209,6 +210,7 @@ static int test_datapath(uint16_t typeflags, int port_off,
{
const int expect0[] = { 0, 0 };
char *rings[2];
uint8_t type = typeflags & 0xFF;
int fds[2], fds_udp[2][2], ret;
fprintf(stderr, "test: datapath 0x%hx\n", typeflags);
@@ -219,6 +221,9 @@ static int test_datapath(uint16_t typeflags, int port_off,
fprintf(stderr, "ERROR: failed open\n");
exit(1);
}
if (type == PACKET_FANOUT_CBPF)
sock_setfilter(fds[0], SOL_PACKET, PACKET_FANOUT_DATA);
rings[0] = sock_fanout_open_ring(fds[0]);
rings[1] = sock_fanout_open_ring(fds[1]);
pair_udp_open(fds_udp[0], PORT_BASE);
@@ -227,11 +232,11 @@ static int test_datapath(uint16_t typeflags, int port_off,
/* Send data, but not enough to overflow a queue */
pair_udp_send(fds_udp[0], 15);
pair_udp_send(fds_udp[1], 5);
pair_udp_send_char(fds_udp[1], 5, DATA_CHAR_1);
ret = sock_fanout_read(fds, rings, expect1);
/* Send more data, overflow the queue */
pair_udp_send(fds_udp[0], 15);
pair_udp_send_char(fds_udp[0], 15, DATA_CHAR_1);
/* TODO: ensure consistent order between expect1 and expect2 */
ret |= sock_fanout_read(fds, rings, expect2);
@@ -275,6 +280,7 @@ int main(int argc, char **argv)
const int expect_rb[2][2] = { { 15, 5 }, { 20, 15 } };
const int expect_cpu0[2][2] = { { 20, 0 }, { 20, 0 } };
const int expect_cpu1[2][2] = { { 0, 20 }, { 0, 20 } };
const int expect_bpf[2][2] = { { 15, 5 }, { 15, 20 } };
int port_off = 2, tries = 5, ret;
test_control_single();
@@ -295,6 +301,8 @@ int main(int argc, char **argv)
port_off, expect_lb[0], expect_lb[1]);
ret |= test_datapath(PACKET_FANOUT_ROLLOVER,
port_off, expect_rb[0], expect_rb[1]);
ret |= test_datapath(PACKET_FANOUT_CBPF,
port_off, expect_bpf[0], expect_bpf[1]);
set_cpuaffinity(0);
ret |= test_datapath(PACKET_FANOUT_CPU, port_off,