The test case is very similar to reuseport_bpf_cpu, only that here
we select socket members based on current numa node id.
# numactl -H
available: 2 nodes (0-1)
node 0 cpus: 0 1 2 3 4 5 12 13 14 15 16 17
node 0 size: 128867 MB
node 0 free: 120080 MB
node 1 cpus: 6 7 8 9 10 11 18 19 20 21 22 23
node 1 size: 96765 MB
node 1 free: 87504 MB
node distances:
node 0 1
0: 10 20
1: 20 10
# ./reuseport_bpf_numa
---- IPv4 UDP ----
send node 0, receive socket 0
send node 1, receive socket 1
send node 1, receive socket 1
send node 0, receive socket 0
---- IPv6 UDP ----
send node 0, receive socket 0
send node 1, receive socket 1
send node 1, receive socket 1
send node 0, receive socket 0
---- IPv4 TCP ----
send node 0, receive socket 0
send node 1, receive socket 1
send node 1, receive socket 1
send node 0, receive socket 0
---- IPv6 TCP ----
send node 0, receive socket 0
send node 1, receive socket 1
send node 1, receive socket 1
send node 0, receive socket 0
SUCCESS
Signed-off-by: Daniel Borkmann <dan...@iogearbox.net>
Acked-by: Alexei Starovoitov <a...@kernel.org>
---
tools/testing/selftests/net/.gitignore | 1 +
tools/testing/selftests/net/Makefile | 11 +-
tools/testing/selftests/net/reuseport_bpf_numa.c | 255 +++++++++++++++++++++++
3 files changed, 263 insertions(+), 4 deletions(-)
create mode 100644 tools/testing/selftests/net/reuseport_bpf_numa.c
diff --git a/tools/testing/selftests/net/.gitignore
b/tools/testing/selftests/net/.gitignore
index 0840684..afe109e 100644
--- a/tools/testing/selftests/net/.gitignore
+++ b/tools/testing/selftests/net/.gitignore
@@ -3,4 +3,5 @@ psock_fanout
psock_tpacket
reuseport_bpf
reuseport_bpf_cpu
+reuseport_bpf_numa
reuseport_dualstack
diff --git a/tools/testing/selftests/net/Makefile
b/tools/testing/selftests/net/Makefile
index 0e53407..e24e4c8 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -1,14 +1,17 @@
# Makefile for net selftests
-CFLAGS = -Wall -O2 -g
-
+CFLAGS = -Wall -Wl,--no-as-needed -O2 -g
CFLAGS += -I../../../../usr/include/
-NET_PROGS = socket psock_fanout psock_tpacket reuseport_bpf reuseport_bpf_cpu
reuseport_dualstack
+NET_PROGS = socket
+NET_PROGS += psock_fanout psock_tpacket
+NET_PROGS += reuseport_bpf reuseport_bpf_cpu reuseport_bpf_numa
+NET_PROGS += reuseport_dualstack
all: $(NET_PROGS)
+reuseport_bpf_numa: LDFLAGS += -lnuma
%: %.c
- $(CC) $(CFLAGS) -o $@ $^
+ $(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^
TEST_PROGS := run_netsocktests run_afpackettests test_bpf.sh
TEST_FILES := $(NET_PROGS)
diff --git a/tools/testing/selftests/net/reuseport_bpf_numa.c
b/tools/testing/selftests/net/reuseport_bpf_numa.c
new file mode 100644
index 0000000..6f20bc9
--- /dev/null
+++ b/tools/testing/selftests/net/reuseport_bpf_numa.c
@@ -0,0 +1,255 @@
+/*
+ * Test functionality of BPF filters with SO_REUSEPORT. Same test as
+ * in reuseport_bpf_cpu, only as one socket per NUMA node.
+ */
+
+#define _GNU_SOURCE
+
+#include <arpa/inet.h>
+#include <errno.h>
+#include <error.h>
+#include <linux/filter.h>
+#include <linux/bpf.h>
+#include <linux/in.h>
+#include <linux/unistd.h>
+#include <sched.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/epoll.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <unistd.h>
+#include <numa.h>
+
+static const int PORT = 8888;
+
+static void build_rcv_group(int *rcv_fd, size_t len, int family, int proto)
+{
+ struct sockaddr_storage addr;
+ struct sockaddr_in *addr4;
+ struct sockaddr_in6 *addr6;
+ size_t i;
+ int opt;
+
+ switch (family) {
+ case AF_INET:
+ addr4 = (struct sockaddr_in *)&addr;
+ addr4->sin_family = AF_INET;
+ addr4->sin_addr.s_addr = htonl(INADDR_ANY);
+ addr4->sin_port = htons(PORT);
+ break;
+ case AF_INET6:
+ addr6 = (struct sockaddr_in6 *)&addr;
+ addr6->sin6_family = AF_INET6;
+ addr6->sin6_addr = in6addr_any;
+ addr6->sin6_port = htons(PORT);
+ break;
+ default:
+ error(1, 0, "Unsupported family %d", family);
+ }
+
+ for (i = 0; i < len; ++i) {
+ rcv_fd[i] = socket(family, proto, 0);
+ if (rcv_fd[i] < 0)
+ error(1, errno, "failed to create receive socket");
+
+ opt = 1;
+ if (setsockopt(rcv_fd[i], SOL_SOCKET, SO_REUSEPORT, &opt,
+ sizeof(opt)))
+ error(1, errno, "failed to set SO_REUSEPORT");
+
+ if (bind(rcv_fd[i], (struct sockaddr *)&addr, sizeof(addr)))
+ error(1, errno, "failed to bind receive socket");
+
+ if (proto == SOCK_STREAM && listen(rcv_fd[i], len * 10))
+ error(1, errno, "failed to listen on receive port");
+ }
+}
+
+static void attach_bpf(int fd)
+{
+ static char bpf_log_buf[65536];
+ static const char bpf_license[] = "";
+
+ int bpf_fd;
+ const struct bpf_insn prog[] = {
+ /* R0 = bpf_get_numa_node_id() */
+ { BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_numa_node_id },
+ /* return R0 */
+ { BPF_JMP | BPF_EXIT, 0, 0, 0, 0 }
+ };
+ union bpf_attr attr;
+
+ memset(&attr, 0, sizeof(attr));
+ attr.prog_type = BPF_PROG_TYPE_SOCKET_FILTER;
+ attr.insn_cnt = sizeof(prog) / sizeof(prog[0]);
+ attr.insns = (unsigned long) &prog;
+ attr.license = (unsigned long) &bpf_license;
+ attr.log_buf = (unsigned long) &bpf_log_buf;
+ attr.log_size = sizeof(bpf_log_buf);
+ attr.log_level = 1;
+
+ bpf_fd = syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr));
+ if (bpf_fd < 0)
+ error(1, errno, "ebpf error. log:\n%s\n", bpf_log_buf);
+
+ 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 send_from_node(int node_id, int family, int proto)
+{
+ struct sockaddr_storage saddr, daddr;
+ struct sockaddr_in *saddr4, *daddr4;
+ struct sockaddr_in6 *saddr6, *daddr6;
+ int fd;
+
+ switch (family) {
+ case AF_INET:
+ saddr4 = (struct sockaddr_in *)&saddr;
+ saddr4->sin_family = AF_INET;
+ saddr4->sin_addr.s_addr = htonl(INADDR_ANY);
+ saddr4->sin_port = 0;
+
+ daddr4 = (struct sockaddr_in *)&daddr;
+ daddr4->sin_family = AF_INET;
+ daddr4->sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+ daddr4->sin_port = htons(PORT);
+ break;
+ case AF_INET6:
+ saddr6 = (struct sockaddr_in6 *)&saddr;
+ saddr6->sin6_family = AF_INET6;
+ saddr6->sin6_addr = in6addr_any;
+ saddr6->sin6_port = 0;
+
+ daddr6 = (struct sockaddr_in6 *)&daddr;
+ daddr6->sin6_family = AF_INET6;
+ daddr6->sin6_addr = in6addr_loopback;
+ daddr6->sin6_port = htons(PORT);
+ break;
+ default:
+ error(1, 0, "Unsupported family %d", family);
+ }
+
+ if (numa_run_on_node(node_id) < 0)
+ error(1, errno, "failed to pin to node");
+
+ fd = socket(family, proto, 0);
+ if (fd < 0)
+ error(1, errno, "failed to create send socket");
+
+ if (bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)))
+ error(1, errno, "failed to bind send socket");
+
+ if (connect(fd, (struct sockaddr *)&daddr, sizeof(daddr)))
+ error(1, errno, "failed to connect send socket");
+
+ if (send(fd, "a", 1, 0) < 0)
+ error(1, errno, "failed to send message");
+
+ close(fd);
+}
+
+static
+void receive_on_node(int *rcv_fd, int len, int epfd, int node_id, int proto)
+{
+ struct epoll_event ev;
+ int i, fd;
+ char buf[8];
+
+ i = epoll_wait(epfd, &ev, 1, -1);
+ if (i < 0)
+ error(1, errno, "epoll_wait failed");
+
+ if (proto == SOCK_STREAM) {
+ fd = accept(ev.data.fd, NULL, NULL);
+ if (fd < 0)
+ error(1, errno, "failed to accept");
+ i = recv(fd, buf, sizeof(buf), 0);
+ close(fd);
+ } else {
+ i = recv(ev.data.fd, buf, sizeof(buf), 0);
+ }
+
+ if (i < 0)
+ error(1, errno, "failed to recv");
+
+ for (i = 0; i < len; ++i)
+ if (ev.data.fd == rcv_fd[i])
+ break;
+ if (i == len)
+ error(1, 0, "failed to find socket");
+ fprintf(stderr, "send node %d, receive socket %d\n", node_id, i);
+ if (node_id != i)
+ error(1, 0, "node id/receive socket mismatch");
+}
+
+static void test(int *rcv_fd, int len, int family, int proto)
+{
+ struct epoll_event ev;
+ int epfd, node;
+
+ build_rcv_group(rcv_fd, len, family, proto);
+ attach_bpf(rcv_fd[0]);
+
+ epfd = epoll_create(1);
+ if (epfd < 0)
+ error(1, errno, "failed to create epoll");
+ for (node = 0; node < len; ++node) {
+ ev.events = EPOLLIN;
+ ev.data.fd = rcv_fd[node];
+ if (epoll_ctl(epfd, EPOLL_CTL_ADD, rcv_fd[node], &ev))
+ error(1, errno, "failed to register sock epoll");
+ }
+
+ /* Forward iterate */
+ for (node = 0; node < len; ++node) {
+ send_from_node(node, family, proto);
+ receive_on_node(rcv_fd, len, epfd, node, proto);
+ }
+
+ /* Reverse iterate */
+ for (node = len - 1; node >= 0; --node) {
+ send_from_node(node, family, proto);
+ receive_on_node(rcv_fd, len, epfd, node, proto);
+ }
+
+ close(epfd);
+ for (node = 0; node < len; ++node)
+ close(rcv_fd[node]);
+}
+
+int main(void)
+{
+ int *rcv_fd, nodes;
+
+ if (numa_available() < 0)
+ error(1, errno, "no numa api support");
+
+ nodes = numa_max_node() + 1;
+
+ rcv_fd = calloc(nodes, sizeof(int));
+ if (!rcv_fd)
+ error(1, 0, "failed to allocate array");
+
+ fprintf(stderr, "---- IPv4 UDP ----\n");
+ test(rcv_fd, nodes, AF_INET, SOCK_DGRAM);
+
+ fprintf(stderr, "---- IPv6 UDP ----\n");
+ test(rcv_fd, nodes, AF_INET6, SOCK_DGRAM);
+
+ fprintf(stderr, "---- IPv4 TCP ----\n");
+ test(rcv_fd, nodes, AF_INET, SOCK_STREAM);
+
+ fprintf(stderr, "---- IPv6 TCP ----\n");
+ test(rcv_fd, nodes, AF_INET6, SOCK_STREAM);
+
+ free(rcv_fd);
+
+ fprintf(stderr, "SUCCESS\n");
+ return 0;
+}
--
1.9.3
