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6#include <uapi/linux/bpf.h>
7#include <bpf/bpf_helpers.h>
8
9struct bpf_map_def SEC("maps") redirect_err_cnt = {
10 .type = BPF_MAP_TYPE_PERCPU_ARRAY,
11 .key_size = sizeof(u32),
12 .value_size = sizeof(u64),
13 .max_entries = 2,
14
15};
16
17#define XDP_UNKNOWN XDP_REDIRECT + 1
18struct bpf_map_def SEC("maps") exception_cnt = {
19 .type = BPF_MAP_TYPE_PERCPU_ARRAY,
20 .key_size = sizeof(u32),
21 .value_size = sizeof(u64),
22 .max_entries = XDP_UNKNOWN + 1,
23};
24
25
26
27
28struct xdp_redirect_ctx {
29 u64 __pad;
30 int prog_id;
31 u32 act;
32 int ifindex;
33 int err;
34 int to_ifindex;
35 u32 map_id;
36 int map_index;
37};
38
39enum {
40 XDP_REDIRECT_SUCCESS = 0,
41 XDP_REDIRECT_ERROR = 1
42};
43
44static __always_inline
45int xdp_redirect_collect_stat(struct xdp_redirect_ctx *ctx)
46{
47 u32 key = XDP_REDIRECT_ERROR;
48 int err = ctx->err;
49 u64 *cnt;
50
51 if (!err)
52 key = XDP_REDIRECT_SUCCESS;
53
54 cnt = bpf_map_lookup_elem(&redirect_err_cnt, &key);
55 if (!cnt)
56 return 1;
57 *cnt += 1;
58
59 return 0;
60
61
62
63
64
65
66}
67
68SEC("tracepoint/xdp/xdp_redirect_err")
69int trace_xdp_redirect_err(struct xdp_redirect_ctx *ctx)
70{
71 return xdp_redirect_collect_stat(ctx);
72}
73
74
75SEC("tracepoint/xdp/xdp_redirect_map_err")
76int trace_xdp_redirect_map_err(struct xdp_redirect_ctx *ctx)
77{
78 return xdp_redirect_collect_stat(ctx);
79}
80
81
82SEC("tracepoint/xdp/xdp_redirect")
83int trace_xdp_redirect(struct xdp_redirect_ctx *ctx)
84{
85 return xdp_redirect_collect_stat(ctx);
86}
87
88
89SEC("tracepoint/xdp/xdp_redirect_map")
90int trace_xdp_redirect_map(struct xdp_redirect_ctx *ctx)
91{
92 return xdp_redirect_collect_stat(ctx);
93}
94
95
96
97
98struct xdp_exception_ctx {
99 u64 __pad;
100 int prog_id;
101 u32 act;
102 int ifindex;
103};
104
105SEC("tracepoint/xdp/xdp_exception")
106int trace_xdp_exception(struct xdp_exception_ctx *ctx)
107{
108 u64 *cnt;
109 u32 key;
110
111 key = ctx->act;
112 if (key > XDP_REDIRECT)
113 key = XDP_UNKNOWN;
114
115 cnt = bpf_map_lookup_elem(&exception_cnt, &key);
116 if (!cnt)
117 return 1;
118 *cnt += 1;
119
120 return 0;
121}
122
123
124struct datarec {
125 u64 processed;
126 u64 dropped;
127 u64 info;
128 u64 err;
129};
130#define MAX_CPUS 64
131
132struct bpf_map_def SEC("maps") cpumap_enqueue_cnt = {
133 .type = BPF_MAP_TYPE_PERCPU_ARRAY,
134 .key_size = sizeof(u32),
135 .value_size = sizeof(struct datarec),
136 .max_entries = MAX_CPUS,
137};
138
139struct bpf_map_def SEC("maps") cpumap_kthread_cnt = {
140 .type = BPF_MAP_TYPE_PERCPU_ARRAY,
141 .key_size = sizeof(u32),
142 .value_size = sizeof(struct datarec),
143 .max_entries = 1,
144};
145
146
147
148
149struct cpumap_enqueue_ctx {
150 u64 __pad;
151 int map_id;
152 u32 act;
153 int cpu;
154 unsigned int drops;
155 unsigned int processed;
156 int to_cpu;
157};
158
159SEC("tracepoint/xdp/xdp_cpumap_enqueue")
160int trace_xdp_cpumap_enqueue(struct cpumap_enqueue_ctx *ctx)
161{
162 u32 to_cpu = ctx->to_cpu;
163 struct datarec *rec;
164
165 if (to_cpu >= MAX_CPUS)
166 return 1;
167
168 rec = bpf_map_lookup_elem(&cpumap_enqueue_cnt, &to_cpu);
169 if (!rec)
170 return 0;
171 rec->processed += ctx->processed;
172 rec->dropped += ctx->drops;
173
174
175 if (ctx->processed > 0)
176 rec->info += 1;
177
178 return 0;
179}
180
181
182
183
184struct cpumap_kthread_ctx {
185 u64 __pad;
186 int map_id;
187 u32 act;
188 int cpu;
189 unsigned int drops;
190 unsigned int processed;
191 int sched;
192};
193
194SEC("tracepoint/xdp/xdp_cpumap_kthread")
195int trace_xdp_cpumap_kthread(struct cpumap_kthread_ctx *ctx)
196{
197 struct datarec *rec;
198 u32 key = 0;
199
200 rec = bpf_map_lookup_elem(&cpumap_kthread_cnt, &key);
201 if (!rec)
202 return 0;
203 rec->processed += ctx->processed;
204 rec->dropped += ctx->drops;
205
206
207 if (ctx->sched)
208 rec->info++;
209
210 return 0;
211}
212
213struct bpf_map_def SEC("maps") devmap_xmit_cnt = {
214 .type = BPF_MAP_TYPE_PERCPU_ARRAY,
215 .key_size = sizeof(u32),
216 .value_size = sizeof(struct datarec),
217 .max_entries = 1,
218};
219
220
221
222
223struct devmap_xmit_ctx {
224 u64 __pad;
225 int from_ifindex;
226 u32 act;
227 int to_ifindex;
228 int drops;
229 int sent;
230 int err;
231};
232
233SEC("tracepoint/xdp/xdp_devmap_xmit")
234int trace_xdp_devmap_xmit(struct devmap_xmit_ctx *ctx)
235{
236 struct datarec *rec;
237 u32 key = 0;
238
239 rec = bpf_map_lookup_elem(&devmap_xmit_cnt, &key);
240 if (!rec)
241 return 0;
242 rec->processed += ctx->sent;
243 rec->dropped += ctx->drops;
244
245
246 rec->info += 1;
247
248
249 if (ctx->err)
250 rec->err++;
251
252
253 if (ctx->drops < 0)
254 rec->err++;
255
256 return 1;
257}
258