1 // SPDX-License-Identifier: GPL-2.0 1
2 #include <stddef.h>
3 #include <string.h>
4 #include <linux/bpf.h>
5 #include <linux/if_ether.h>
6 #include <linux/if_packet.h>
7 #include <linux/ip.h>
8 #include <linux/ipv6.h>
9 #include <linux/types.h>
10 #include <linux/socket.h>
11 #include <linux/tcp.h>
12 #include <netinet/in.h>
13 #include "bpf_helpers.h"
14 #include "bpf_endian.h"
15 #include "test_tcpbpf.h"
16
17 struct bpf_map_def SEC("maps") global_map = {
18 .type = BPF_MAP_TYPE_ARRAY,
19 .key_size = sizeof(__u32),
20 .value_size = sizeof(struct tcpbpf_glo
21 .max_entries = 4,
22 };
23
24 struct bpf_map_def SEC("maps") sockopt_results
25 .type = BPF_MAP_TYPE_ARRAY,
26 .key_size = sizeof(__u32),
27 .value_size = sizeof(int),
28 .max_entries = 2,
29 };
30
31 static inline void update_event_map(int event)
32 {
33 __u32 key = 0;
34 struct tcpbpf_globals g, *gp;
35
36 gp = bpf_map_lookup_elem(&global_map,
37 if (gp == NULL) {
38 struct tcpbpf_globals g = {0};
39
40 g.event_map |= (1 << event);
41 bpf_map_update_elem(&global_ma
42 BPF_ANY);
43 } else {
44 g = *gp;
45 g.event_map |= (1 << event);
46 bpf_map_update_elem(&global_ma
47 BPF_ANY);
48 }
49 }
50
51 int _version SEC("version") = 1;
52
53 SEC("sockops")
54 int bpf_testcb(struct bpf_sock_ops *skops)
55 {
56 char header[sizeof(struct ipv6hdr) + s
57 struct tcphdr *thdr;
58 int good_call_rv = 0;
59 int bad_call_rv = 0;
60 int save_syn = 1;
61 int rv = -1;
62 int v = 0;
63 int op;
64
65 op = (int) skops->op;
66
67 update_event_map(op);
68
69 switch (op) {
70 case BPF_SOCK_OPS_ACTIVE_ESTABLISHED_C
71 /* Test failure to set largest
72 bad_call_rv = bpf_sock_ops_cb_
73 /* Set callback */
74 good_call_rv = bpf_sock_ops_cb
75
76 /* Update results */
77 {
78 __u32 key = 0;
79 struct tcpbpf_globals
80
81 gp = bpf_map_lookup_el
82 if (!gp)
83 break;
84 g = *gp;
85 g.bad_cb_test_rv = bad
86 g.good_cb_test_rv = go
87 bpf_map_update_elem(&g
88 BP
89 }
90 break;
91 case BPF_SOCK_OPS_PASSIVE_ESTABLISHED_
92 skops->sk_txhash = 0x12345f;
93 v = 0xff;
94 rv = bpf_setsockopt(skops, SOL
95 sizeof(v))
96 if (skops->family == AF_INET6)
97 v = bpf_getsockopt(sko
98 hea
99
100 if (!v) {
101 int offset = s
102
103 thdr = (struct
104 v = thdr->syn;
105 __u32 key = 1;
106
107 bpf_map_update
108
109 }
110 }
111 break;
112 case BPF_SOCK_OPS_RTO_CB:
113 break;
114 case BPF_SOCK_OPS_RETRANS_CB:
115 break;
116 case BPF_SOCK_OPS_STATE_CB:
117 if (skops->args[1] == BPF_TCP_
118 __u32 key = 0;
119 struct tcpbpf_globals
120
121 gp = bpf_map_lookup_el
122 if (!gp)
123 break;
124 g = *gp;
125 if (skops->args[0] ==
126 g.num_listen++
127 } else {
128 g.total_retran
129 g.data_segs_in
130 g.data_segs_ou
131 g.bytes_receiv
132 g.bytes_acked
133 }
134 bpf_map_update_elem(&g
135 BP
136 }
137 break;
138 case BPF_SOCK_OPS_TCP_LISTEN_CB:
139 bpf_sock_ops_cb_flags_set(skop
140 v = bpf_setsockopt(skops, IPPR
141 &save_syn,
142 /* Update global map w/ result
143 __u32 key = 0;
144
145 bpf_map_update_elem(&sockopt_r
146 break;
147 default:
148 rv = -1;
149 }
150 skops->reply = rv;
151 return 1;
152 }
153 char _license[] SEC("license") = "GPL";
154
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