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soreuseport: pass skb to secondary UDP socket lookup

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This socket-lookup path did not pass along the skb in question
in my original BPF-based socket selection patch.  The skb in the
udpN_lib_lookup2 path can be used for BPF-based socket selection just
like it is in the 'traditional' udpN_lib_lookup path.

udpN_lib_lookup2 kicks in when there are greater than 10 sockets in
the same hlist slot.  Coincidentally, I chose 10 sockets per
reuseport group in my functional test, so the lookup2 path was not
excersised. This adds an additional set of tests with 20 sockets.

Fixes: 538950a1b7 ("soreuseport: setsockopt SO_ATTACH_REUSEPORT_[CE]BPF")
Fixes: 3ca8e40299 ("soreuseport: BPF selection functional test")
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Craig Gallek <kraig@google.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Craig Gallek 2016-01-05 15:08:07 -05:00 • committed by David S. Miller
parent f0138e2596
commit 1134158ba3
3 changed files with 59 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

47
tools/testing/selftests/net/reuseport_bpf.c
View file

@ -123,6 +123,8 @@ static void attach_ebpf(int fd, uint16_t mod)
if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_REUSEPORT_EBPF, &bpf_fd,
sizeof(bpf_fd)))
error(1, errno, "failed to set SO_ATTACH_REUSEPORT_EBPF");
close(bpf_fd);
}
static void attach_cbpf(int fd, uint16_t mod)
@ -396,6 +398,9 @@ static void test_filter_without_bind(void)
int main(void)
{
fprintf(stderr, "---- IPv4 UDP ----\n");
/* NOTE: UDP socket lookups traverse a different code path when there
* are > 10 sockets in a group. Run the bpf test through both paths.
*/
test_reuseport_ebpf((struct test_params) {
.recv_family = AF_INET,
.send_family = AF_INET,
@ -403,6 +408,13 @@ int main(void)
.recv_socks = 10,
.recv_port = 8000,
.send_port_min = 9000});
test_reuseport_ebpf((struct test_params) {
.recv_family = AF_INET,
.send_family = AF_INET,
.protocol = SOCK_DGRAM,
.recv_socks = 20,
.recv_port = 8000,
.send_port_min = 9000});
test_reuseport_cbpf((struct test_params) {
.recv_family = AF_INET,
.send_family = AF_INET,
@ -410,6 +422,13 @@ int main(void)
.recv_socks = 10,
.recv_port = 8001,
.send_port_min = 9020});
test_reuseport_cbpf((struct test_params) {
.recv_family = AF_INET,
.send_family = AF_INET,
.protocol = SOCK_DGRAM,
.recv_socks = 20,
.recv_port = 8001,
.send_port_min = 9020});
test_extra_filter((struct test_params) {
.recv_family = AF_INET,
.protocol = SOCK_DGRAM,
@ -427,6 +446,13 @@ int main(void)
.recv_socks = 10,
.recv_port = 8003,
.send_port_min = 9040});
test_reuseport_ebpf((struct test_params) {
.recv_family = AF_INET6,
.send_family = AF_INET6,
.protocol = SOCK_DGRAM,
.recv_socks = 20,
.recv_port = 8003,
.send_port_min = 9040});
test_reuseport_cbpf((struct test_params) {
.recv_family = AF_INET6,
.send_family = AF_INET6,
@ -434,6 +460,13 @@ int main(void)
.recv_socks = 10,
.recv_port = 8004,
.send_port_min = 9060});
test_reuseport_cbpf((struct test_params) {
.recv_family = AF_INET6,
.send_family = AF_INET6,
.protocol = SOCK_DGRAM,
.recv_socks = 20,
.recv_port = 8004,
.send_port_min = 9060});
test_extra_filter((struct test_params) {
.recv_family = AF_INET6,
.protocol = SOCK_DGRAM,
@ -444,6 +477,13 @@ int main(void)
.recv_port = 8009});
fprintf(stderr, "---- IPv6 UDP w/ mapped IPv4 ----\n");
test_reuseport_ebpf((struct test_params) {
.recv_family = AF_INET6,
.send_family = AF_INET,
.protocol = SOCK_DGRAM,
.recv_socks = 20,
.recv_port = 8006,
.send_port_min = 9080});
test_reuseport_ebpf((struct test_params) {
.recv_family = AF_INET6,
.send_family = AF_INET,
@ -458,6 +498,13 @@ int main(void)
.recv_socks = 10,
.recv_port = 8007,
.send_port_min = 9100});
test_reuseport_cbpf((struct test_params) {
.recv_family = AF_INET6,
.send_family = AF_INET,
.protocol = SOCK_DGRAM,
.recv_socks = 20,
.recv_port = 8007,
.send_port_min = 9100});
test_filter_without_bind();