projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| d6d4f60c LB |
1 | // SPDX-License-Identifier: GPL-2.0 |
| 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> | |
| d6d4f60c LB |
8 | #include <linux/types.h> |
| 9 | #include <linux/socket.h> | |
| 10 | #include <linux/tcp.h> | |
| 11 | #include <netinet/in.h> | |
| 12 | #include "bpf_helpers.h" | |
| 13 | #include "bpf_endian.h" | |
| 14 | #include "test_tcpbpf.h" | |
| 15 | ||
| 16 | struct bpf_map_def SEC("maps") global_map = { | |
| 17 | .type = BPF_MAP_TYPE_ARRAY, | |
| 18 | .key_size = sizeof(__u32), | |
| 19 | .value_size = sizeof(struct tcpbpf_globals), | |
| 20 | .max_entries = 2, | |
| 21 | }; | |
| 22 | ||
| 23 | static inline void update_event_map(int event) | |
| 24 | { | |
| 25 | __u32 key = 0; | |
| 26 | struct tcpbpf_globals g, *gp; | |
| 27 | ||
| 28 | gp = bpf_map_lookup_elem(&global_map, &key); | |
| 29 | if (gp == NULL) { | |
| 30 | struct tcpbpf_globals g = {0}; | |
| 31 | ||
| 32 | g.event_map |= (1 << event); | |
| 33 | bpf_map_update_elem(&global_map, &key, &g, | |
| 34 | BPF_ANY); | |
| 35 | } else { | |
| 36 | g = *gp; | |
| 37 | g.event_map |= (1 << event); | |
| 38 | bpf_map_update_elem(&global_map, &key, &g, | |
| 39 | BPF_ANY); | |
| 40 | } | |
| 41 | } | |
| 42 | ||
| 43 | int _version SEC("version") = 1; | |
| 44 | ||
| 45 | SEC("sockops") | |
| 46 | int bpf_testcb(struct bpf_sock_ops *skops) | |
| 47 | { | |
| 48 | int rv = -1; | |
| 49 | int bad_call_rv = 0; | |
| 50 | int good_call_rv = 0; | |
| 51 | int op; | |
| 52 | int v = 0; | |
| 53 | ||
| 54 | op = (int) skops->op; | |
| 55 | ||
| 56 | update_event_map(op); | |
| 57 | ||
| 58 | switch (op) { | |
| 59 | case BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB: | |
| 60 | /* Test failure to set largest cb flag (assumes not defined) */ | |
| 61 | bad_call_rv = bpf_sock_ops_cb_flags_set(skops, 0x80); | |
| 62 | /* Set callback */ | |
| 63 | good_call_rv = bpf_sock_ops_cb_flags_set(skops, | |
| 64 | BPF_SOCK_OPS_STATE_CB_FLAG); | |
| 65 | /* Update results */ | |
| 66 | { | |
| 67 | __u32 key = 0; | |
| 68 | struct tcpbpf_globals g, *gp; | |
| 69 | ||
| 70 | gp = bpf_map_lookup_elem(&global_map, &key); | |
| 71 | if (!gp) | |
| 72 | break; | |
| 73 | g = *gp; | |
| 74 | g.bad_cb_test_rv = bad_call_rv; | |
| 75 | g.good_cb_test_rv = good_call_rv; | |
| 76 | bpf_map_update_elem(&global_map, &key, &g, | |
| 77 | BPF_ANY); | |
| 78 | } | |
| 79 | break; | |
| 80 | case BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB: | |
| d6d4f60c LB |
81 | skops->sk_txhash = 0x12345f; |
| 82 | v = 0xff; | |
| 83 | rv = bpf_setsockopt(skops, SOL_IPV6, IPV6_TCLASS, &v, | |
| 84 | sizeof(v)); | |
| 85 | break; | |
| 86 | case BPF_SOCK_OPS_RTO_CB: | |
| 87 | break; | |
| 88 | case BPF_SOCK_OPS_RETRANS_CB: | |
| 89 | break; | |
| 90 | case BPF_SOCK_OPS_STATE_CB: | |
| 91 | if (skops->args[1] == BPF_TCP_CLOSE) { | |
| 92 | __u32 key = 0; | |
| 93 | struct tcpbpf_globals g, *gp; | |
| 94 | ||
| 95 | gp = bpf_map_lookup_elem(&global_map, &key); | |
| 96 | if (!gp) | |
| 97 | break; | |
| 98 | g = *gp; | |
| 99 | g.total_retrans = skops->total_retrans; | |
| 100 | g.data_segs_in = skops->data_segs_in; | |
| 101 | g.data_segs_out = skops->data_segs_out; | |
| 102 | g.bytes_received = skops->bytes_received; | |
| 103 | g.bytes_acked = skops->bytes_acked; | |
| 104 | bpf_map_update_elem(&global_map, &key, &g, | |
| 105 | BPF_ANY); | |
| 106 | } | |
| 107 | break; | |
| 108 | default: | |
| 109 | rv = -1; | |
| 110 | } | |
| 111 | skops->reply = rv; | |
| 112 | return 1; | |
| 113 | } | |
| 114 | char _license[] SEC("license") = "GPL"; |