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Diffstat (limited to 'tools/testing/selftests/bpf/test_tcpbpf_kern.c')
-rw-r--r--tools/testing/selftests/bpf/test_tcpbpf_kern.c115
1 files changed, 115 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/test_tcpbpf_kern.c b/tools/testing/selftests/bpf/test_tcpbpf_kern.c
new file mode 100644
index 000000000000..57119ad57a3f
--- /dev/null
+++ b/tools/testing/selftests/bpf/test_tcpbpf_kern.c
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stddef.h>
+#include <string.h>
+#include <linux/bpf.h>
+#include <linux/if_ether.h>
+#include <linux/if_packet.h>
+#include <linux/ip.h>
+#include <linux/in6.h>
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/tcp.h>
+#include <netinet/in.h>
+#include "bpf_helpers.h"
+#include "bpf_endian.h"
+#include "test_tcpbpf.h"
+
+struct bpf_map_def SEC("maps") global_map = {
+ .type = BPF_MAP_TYPE_ARRAY,
+ .key_size = sizeof(__u32),
+ .value_size = sizeof(struct tcpbpf_globals),
+ .max_entries = 2,
+};
+
+static inline void update_event_map(int event)
+{
+ __u32 key = 0;
+ struct tcpbpf_globals g, *gp;
+
+ gp = bpf_map_lookup_elem(&global_map, &key);
+ if (gp == NULL) {
+ struct tcpbpf_globals g = {0};
+
+ g.event_map |= (1 << event);
+ bpf_map_update_elem(&global_map, &key, &g,
+ BPF_ANY);
+ } else {
+ g = *gp;
+ g.event_map |= (1 << event);
+ bpf_map_update_elem(&global_map, &key, &g,
+ BPF_ANY);
+ }
+}
+
+int _version SEC("version") = 1;
+
+SEC("sockops")
+int bpf_testcb(struct bpf_sock_ops *skops)
+{
+ int rv = -1;
+ int bad_call_rv = 0;
+ int good_call_rv = 0;
+ int op;
+ int v = 0;
+
+ op = (int) skops->op;
+
+ update_event_map(op);
+
+ switch (op) {
+ case BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB:
+ /* Test failure to set largest cb flag (assumes not defined) */
+ bad_call_rv = bpf_sock_ops_cb_flags_set(skops, 0x80);
+ /* Set callback */
+ good_call_rv = bpf_sock_ops_cb_flags_set(skops,
+ BPF_SOCK_OPS_STATE_CB_FLAG);
+ /* Update results */
+ {
+ __u32 key = 0;
+ struct tcpbpf_globals g, *gp;
+
+ gp = bpf_map_lookup_elem(&global_map, &key);
+ if (!gp)
+ break;
+ g = *gp;
+ g.bad_cb_test_rv = bad_call_rv;
+ g.good_cb_test_rv = good_call_rv;
+ bpf_map_update_elem(&global_map, &key, &g,
+ BPF_ANY);
+ }
+ break;
+ case BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB:
+ skops->sk_txhash = 0x12345f;
+ v = 0xff;
+ rv = bpf_setsockopt(skops, SOL_IPV6, IPV6_TCLASS, &v,
+ sizeof(v));
+ break;
+ case BPF_SOCK_OPS_RTO_CB:
+ break;
+ case BPF_SOCK_OPS_RETRANS_CB:
+ break;
+ case BPF_SOCK_OPS_STATE_CB:
+ if (skops->args[1] == BPF_TCP_CLOSE) {
+ __u32 key = 0;
+ struct tcpbpf_globals g, *gp;
+
+ gp = bpf_map_lookup_elem(&global_map, &key);
+ if (!gp)
+ break;
+ g = *gp;
+ g.total_retrans = skops->total_retrans;
+ g.data_segs_in = skops->data_segs_in;
+ g.data_segs_out = skops->data_segs_out;
+ g.bytes_received = skops->bytes_received;
+ g.bytes_acked = skops->bytes_acked;
+ bpf_map_update_elem(&global_map, &key, &g,
+ BPF_ANY);
+ }
+ break;
+ default:
+ rv = -1;
+ }
+ skops->reply = rv;
+ return 1;
+}
+char _license[] SEC("license") = "GPL";