1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 /*
3 * Shared Memory Communications over RDMA (SMC
4 *
5 * Macros for SMC statistics
6 *
7 * Copyright IBM Corp. 2021
8 *
9 * Author(s): Guvenc Gulce
10 */
11
12 #ifndef NET_SMC_SMC_STATS_H_
13 #define NET_SMC_SMC_STATS_H_
14 #include <linux/init.h>
15 #include <linux/mutex.h>
16 #include <linux/percpu.h>
17 #include <linux/ctype.h>
18 #include <linux/smc.h>
19
20 #include "smc_clc.h"
21
22 #define SMC_MAX_FBACK_RSN_CNT 36
23
24 enum {
25 SMC_BUF_8K,
26 SMC_BUF_16K,
27 SMC_BUF_32K,
28 SMC_BUF_64K,
29 SMC_BUF_128K,
30 SMC_BUF_256K,
31 SMC_BUF_512K,
32 SMC_BUF_1024K,
33 SMC_BUF_G_1024K,
34 SMC_BUF_MAX,
35 };
36
37 struct smc_stats_fback {
38 int fback_code;
39 u16 count;
40 };
41
42 struct smc_stats_rsn {
43 struct smc_stats_fback srv[SMC_MAX_FB
44 struct smc_stats_fback clnt[SMC_MAX_F
45 u64 srv_fback_cnt;
46 u64 clnt_fback_cnt
47 };
48
49 struct smc_stats_rmbcnt {
50 u64 buf_size_small_peer_cnt;
51 u64 buf_size_small_cnt;
52 u64 buf_full_peer_cnt;
53 u64 buf_full_cnt;
54 u64 reuse_cnt;
55 u64 alloc_cnt;
56 u64 dgrade_cnt;
57 };
58
59 struct smc_stats_memsize {
60 u64 buf[SMC_BUF_MAX];
61 };
62
63 struct smc_stats_tech {
64 struct smc_stats_memsize tx_rmbsize;
65 struct smc_stats_memsize rx_rmbsize;
66 struct smc_stats_memsize tx_pd;
67 struct smc_stats_memsize rx_pd;
68 struct smc_stats_rmbcnt rmb_tx;
69 struct smc_stats_rmbcnt rmb_rx;
70 u64 clnt_v1_succ_c
71 u64 clnt_v2_succ_c
72 u64 srv_v1_succ_cn
73 u64 srv_v2_succ_cn
74 u64 urg_data_cnt;
75 u64 splice_cnt;
76 u64 cork_cnt;
77 u64 ndly_cnt;
78 u64 rx_bytes;
79 u64 tx_bytes;
80 u64 rx_cnt;
81 u64 tx_cnt;
82 u64 rx_rmbuse;
83 u64 tx_rmbuse;
84 };
85
86 struct smc_stats {
87 struct smc_stats_tech smc[2];
88 u64 clnt_hshake_er
89 u64 srv_hshake_err
90 };
91
92 #define SMC_STAT_PAYLOAD_SUB(_smc_stats, _tech
93 do { \
94 typeof(_smc_stats) stats = (_smc_stats
95 typeof(_tech) t = (_tech); \
96 typeof(_len) l = (_len); \
97 int _pos; \
98 typeof(_rc) r = (_rc); \
99 int m = SMC_BUF_MAX - 1; \
100 this_cpu_inc((*stats).smc[t].key ## _c
101 if (r <= 0 || l <= 0) \
102 break; \
103 _pos = fls64((l - 1) >> 13); \
104 _pos = (_pos <= m) ? _pos : m; \
105 this_cpu_inc((*stats).smc[t].key ## _p
106 this_cpu_add((*stats).smc[t].key ## _b
107 } \
108 while (0)
109
110 #define SMC_STAT_TX_PAYLOAD(_smc, length, rcod
111 do { \
112 typeof(_smc) __smc = _smc; \
113 struct net *_net = sock_net(&__smc->sk
114 struct smc_stats __percpu *_smc_stats
115 typeof(length) _len = (length); \
116 typeof(rcode) _rc = (rcode); \
117 bool is_smcd = !__smc->conn.lnk; \
118 if (is_smcd) \
119 SMC_STAT_PAYLOAD_SUB(_smc_stat
120 else \
121 SMC_STAT_PAYLOAD_SUB(_smc_stat
122 } \
123 while (0)
124
125 #define SMC_STAT_RX_PAYLOAD(_smc, length, rcod
126 do { \
127 typeof(_smc) __smc = _smc; \
128 struct net *_net = sock_net(&__smc->sk
129 struct smc_stats __percpu *_smc_stats
130 typeof(length) _len = (length); \
131 typeof(rcode) _rc = (rcode); \
132 bool is_smcd = !__smc->conn.lnk; \
133 if (is_smcd) \
134 SMC_STAT_PAYLOAD_SUB(_smc_stat
135 else \
136 SMC_STAT_PAYLOAD_SUB(_smc_stat
137 } \
138 while (0)
139
140 #define SMC_STAT_RMB_SIZE_SUB(_smc_stats, _tec
141 do { \
142 typeof(_smc_stats) stats = (_smc_stats
143 typeof(_is_add) is_a = (_is_add); \
144 typeof(_len) _l = (_len); \
145 typeof(_tech) t = (_tech); \
146 int _pos; \
147 int m = SMC_BUF_MAX - 1; \
148 if (_l <= 0) \
149 break; \
150 if (is_a) { \
151 _pos = fls((_l - 1) >> 13); \
152 _pos = (_pos <= m) ? _pos : m;
153 this_cpu_inc((*stats).smc[t].k
154 this_cpu_add((*stats).smc[t].k
155 } else { \
156 this_cpu_sub((*stats).smc[t].k
157 } \
158 } \
159 while (0)
160
161 #define SMC_STAT_RMB_SUB(_smc_stats, type, t,
162 this_cpu_inc((*(_smc_stats)).smc[t].rm
163
164 #define SMC_STAT_RMB_SIZE(_smc, _is_smcd, _is_
165 do { \
166 struct net *_net = sock_net(&(_smc)->s
167 struct smc_stats __percpu *_smc_stats
168 typeof(_is_add) is_add = (_is_add); \
169 typeof(_is_smcd) is_d = (_is_smcd); \
170 typeof(_is_rx) is_r = (_is_rx); \
171 typeof(_len) l = (_len); \
172 if ((is_d) && (is_r)) \
173 SMC_STAT_RMB_SIZE_SUB(_smc_sta
174 if ((is_d) && !(is_r)) \
175 SMC_STAT_RMB_SIZE_SUB(_smc_sta
176 if (!(is_d) && (is_r)) \
177 SMC_STAT_RMB_SIZE_SUB(_smc_sta
178 if (!(is_d) && !(is_r)) \
179 SMC_STAT_RMB_SIZE_SUB(_smc_sta
180 } \
181 while (0)
182
183 #define SMC_STAT_RMB(_smc, type, _is_smcd, _is
184 do { \
185 struct net *net = sock_net(&(_smc)->sk
186 struct smc_stats __percpu *_smc_stats
187 typeof(_is_smcd) is_d = (_is_smcd); \
188 typeof(_is_rx) is_r = (_is_rx); \
189 if ((is_d) && (is_r)) \
190 SMC_STAT_RMB_SUB(_smc_stats, t
191 if ((is_d) && !(is_r)) \
192 SMC_STAT_RMB_SUB(_smc_stats, t
193 if (!(is_d) && (is_r)) \
194 SMC_STAT_RMB_SUB(_smc_stats, t
195 if (!(is_d) && !(is_r)) \
196 SMC_STAT_RMB_SUB(_smc_stats, t
197 } \
198 while (0)
199
200 #define SMC_STAT_BUF_REUSE(smc, is_smcd, is_rx
201 SMC_STAT_RMB(smc, reuse, is_smcd, is_r
202
203 #define SMC_STAT_RMB_ALLOC(smc, is_smcd, is_rx
204 SMC_STAT_RMB(smc, alloc, is_smcd, is_r
205
206 #define SMC_STAT_RMB_DOWNGRADED(smc, is_smcd,
207 SMC_STAT_RMB(smc, dgrade, is_smcd, is_
208
209 #define SMC_STAT_RMB_TX_PEER_FULL(smc, is_smcd
210 SMC_STAT_RMB(smc, buf_full_peer, is_sm
211
212 #define SMC_STAT_RMB_TX_FULL(smc, is_smcd) \
213 SMC_STAT_RMB(smc, buf_full, is_smcd, f
214
215 #define SMC_STAT_RMB_TX_PEER_SIZE_SMALL(smc, i
216 SMC_STAT_RMB(smc, buf_size_small_peer,
217
218 #define SMC_STAT_RMB_TX_SIZE_SMALL(smc, is_smc
219 SMC_STAT_RMB(smc, buf_size_small, is_s
220
221 #define SMC_STAT_RMB_RX_SIZE_SMALL(smc, is_smc
222 SMC_STAT_RMB(smc, buf_size_small, is_s
223
224 #define SMC_STAT_RMB_RX_FULL(smc, is_smcd) \
225 SMC_STAT_RMB(smc, buf_full, is_smcd, t
226
227 #define SMC_STAT_INC(_smc, type) \
228 do { \
229 typeof(_smc) __smc = _smc; \
230 bool is_smcd = !(__smc)->conn.lnk; \
231 struct net *net = sock_net(&(__smc)->s
232 struct smc_stats __percpu *smc_stats =
233 if ((is_smcd)) \
234 this_cpu_inc(smc_stats->smc[SM
235 else \
236 this_cpu_inc(smc_stats->smc[SM
237 } \
238 while (0)
239
240 #define SMC_STAT_CLNT_SUCC_INC(net, _aclc) \
241 do { \
242 typeof(_aclc) acl = (_aclc); \
243 bool is_v2 = (acl->hdr.version == SMC_
244 bool is_smcd = (acl->hdr.typev1 == SMC
245 struct smc_stats __percpu *smc_stats =
246 if (is_v2 && is_smcd) \
247 this_cpu_inc(smc_stats->smc[SM
248 else if (is_v2 && !is_smcd) \
249 this_cpu_inc(smc_stats->smc[SM
250 else if (!is_v2 && is_smcd) \
251 this_cpu_inc(smc_stats->smc[SM
252 else if (!is_v2 && !is_smcd) \
253 this_cpu_inc(smc_stats->smc[SM
254 } \
255 while (0)
256
257 #define SMC_STAT_SERV_SUCC_INC(net, _ini) \
258 do { \
259 typeof(_ini) i = (_ini); \
260 bool is_smcd = (i->is_smcd); \
261 u8 version = is_smcd ? i->smcd_version
262 bool is_v2 = (version & SMC_V2); \
263 typeof(net->smc.smc_stats) smc_stats =
264 if (is_v2 && is_smcd) \
265 this_cpu_inc(smc_stats->smc[SM
266 else if (is_v2 && !is_smcd) \
267 this_cpu_inc(smc_stats->smc[SM
268 else if (!is_v2 && is_smcd) \
269 this_cpu_inc(smc_stats->smc[SM
270 else if (!is_v2 && !is_smcd) \
271 this_cpu_inc(smc_stats->smc[SM
272 } \
273 while (0)
274
275 int smc_nl_get_stats(struct sk_buff *skb, stru
276 int smc_nl_get_fback_stats(struct sk_buff *skb
277 int smc_stats_init(struct net *net);
278 void smc_stats_exit(struct net *net);
279
280 #endif /* NET_SMC_SMC_STATS_H_ */
281
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