1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Shared Memory Communications over RDMA (SMC-R) and RoCE
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_FBACK_RSN_CNT];
44 struct smc_stats_fback clnt[SMC_MAX_FBACK_RSN_CNT];
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_cnt;
71 u64 clnt_v2_succ_cnt;
72 u64 srv_v1_succ_cnt;
73 u64 srv_v2_succ_cnt;
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 };
83
84 struct smc_stats {
85 struct smc_stats_tech smc[2];
86 u64 clnt_hshake_err_cnt;
87 u64 srv_hshake_err_cnt;
88 };
89
90 #define SMC_STAT_PAYLOAD_SUB(_smc_stats, _tech, key, _len, _rc) \
91 do { \
92 typeof(_smc_stats) stats = (_smc_stats); \
93 typeof(_tech) t = (_tech); \
94 typeof(_len) l = (_len); \
95 int _pos; \
96 typeof(_rc) r = (_rc); \
97 int m = SMC_BUF_MAX - 1; \
98 this_cpu_inc((*stats).smc[t].key ## _cnt); \
99 if (r <= 0 || l <= 0) \
100 break; \
101 _pos = fls64((l - 1) >> 13); \
102 _pos = (_pos <= m) ? _pos : m; \
103 this_cpu_inc((*stats).smc[t].key ## _pd.buf[_pos]); \
104 this_cpu_add((*stats).smc[t].key ## _bytes, r); \
105 } \
106 while (0)
107
108 #define SMC_STAT_TX_PAYLOAD(_smc, length, rcode) \
109 do { \
110 typeof(_smc) __smc = _smc; \
111 struct net *_net = sock_net(&__smc->sk); \
112 struct smc_stats __percpu *_smc_stats = _net->smc.smc_stats; \
113 typeof(length) _len = (length); \
114 typeof(rcode) _rc = (rcode); \
115 bool is_smcd = !__smc->conn.lnk; \
116 if (is_smcd) \
117 SMC_STAT_PAYLOAD_SUB(_smc_stats, SMC_TYPE_D, tx, _len, _rc); \
118 else \
119 SMC_STAT_PAYLOAD_SUB(_smc_stats, SMC_TYPE_R, tx, _len, _rc); \
120 } \
121 while (0)
122
123 #define SMC_STAT_RX_PAYLOAD(_smc, length, rcode) \
124 do { \
125 typeof(_smc) __smc = _smc; \
126 struct net *_net = sock_net(&__smc->sk); \
127 struct smc_stats __percpu *_smc_stats = _net->smc.smc_stats; \
128 typeof(length) _len = (length); \
129 typeof(rcode) _rc = (rcode); \
130 bool is_smcd = !__smc->conn.lnk; \
131 if (is_smcd) \
132 SMC_STAT_PAYLOAD_SUB(_smc_stats, SMC_TYPE_D, rx, _len, _rc); \
133 else \
134 SMC_STAT_PAYLOAD_SUB(_smc_stats, SMC_TYPE_R, rx, _len, _rc); \
135 } \
136 while (0)
137
138 #define SMC_STAT_RMB_SIZE_SUB(_smc_stats, _tech, k, _len) \
139 do { \
140 typeof(_len) _l = (_len); \
141 typeof(_tech) t = (_tech); \
142 int _pos; \
143 int m = SMC_BUF_MAX - 1; \
144 if (_l <= 0) \
145 break; \
146 _pos = fls((_l - 1) >> 13); \
147 _pos = (_pos <= m) ? _pos : m; \
148 this_cpu_inc((*(_smc_stats)).smc[t].k ## _rmbsize.buf[_pos]); \
149 } \
150 while (0)
151
152 #define SMC_STAT_RMB_SUB(_smc_stats, type, t, key) \
153 this_cpu_inc((*(_smc_stats)).smc[t].rmb ## _ ## key.type ## _cnt)
154
155 #define SMC_STAT_RMB_SIZE(_smc, _is_smcd, _is_rx, _len) \
156 do { \
157 struct net *_net = sock_net(&(_smc)->sk); \
158 struct smc_stats __percpu *_smc_stats = _net->smc.smc_stats; \
159 typeof(_is_smcd) is_d = (_is_smcd); \
160 typeof(_is_rx) is_r = (_is_rx); \
161 typeof(_len) l = (_len); \
162 if ((is_d) && (is_r)) \
163 SMC_STAT_RMB_SIZE_SUB(_smc_stats, SMC_TYPE_D, rx, l); \
164 if ((is_d) && !(is_r)) \
165 SMC_STAT_RMB_SIZE_SUB(_smc_stats, SMC_TYPE_D, tx, l); \
166 if (!(is_d) && (is_r)) \
167 SMC_STAT_RMB_SIZE_SUB(_smc_stats, SMC_TYPE_R, rx, l); \
168 if (!(is_d) && !(is_r)) \
169 SMC_STAT_RMB_SIZE_SUB(_smc_stats, SMC_TYPE_R, tx, l); \
170 } \
171 while (0)
172
173 #define SMC_STAT_RMB(_smc, type, _is_smcd, _is_rx) \
174 do { \
175 struct net *net = sock_net(&(_smc)->sk); \
176 struct smc_stats __percpu *_smc_stats = net->smc.smc_stats; \
177 typeof(_is_smcd) is_d = (_is_smcd); \
178 typeof(_is_rx) is_r = (_is_rx); \
179 if ((is_d) && (is_r)) \
180 SMC_STAT_RMB_SUB(_smc_stats, type, SMC_TYPE_D, rx); \
181 if ((is_d) && !(is_r)) \
182 SMC_STAT_RMB_SUB(_smc_stats, type, SMC_TYPE_D, tx); \
183 if (!(is_d) && (is_r)) \
184 SMC_STAT_RMB_SUB(_smc_stats, type, SMC_TYPE_R, rx); \
185 if (!(is_d) && !(is_r)) \
186 SMC_STAT_RMB_SUB(_smc_stats, type, SMC_TYPE_R, tx); \
187 } \
188 while (0)
189
190 #define SMC_STAT_BUF_REUSE(smc, is_smcd, is_rx) \
191 SMC_STAT_RMB(smc, reuse, is_smcd, is_rx)
192
193 #define SMC_STAT_RMB_ALLOC(smc, is_smcd, is_rx) \
194 SMC_STAT_RMB(smc, alloc, is_smcd, is_rx)
195
196 #define SMC_STAT_RMB_DOWNGRADED(smc, is_smcd, is_rx) \
197 SMC_STAT_RMB(smc, dgrade, is_smcd, is_rx)
198
199 #define SMC_STAT_RMB_TX_PEER_FULL(smc, is_smcd) \
200 SMC_STAT_RMB(smc, buf_full_peer, is_smcd, false)
201
202 #define SMC_STAT_RMB_TX_FULL(smc, is_smcd) \
203 SMC_STAT_RMB(smc, buf_full, is_smcd, false)
204
205 #define SMC_STAT_RMB_TX_PEER_SIZE_SMALL(smc, is_smcd) \
206 SMC_STAT_RMB(smc, buf_size_small_peer, is_smcd, false)
207
208 #define SMC_STAT_RMB_TX_SIZE_SMALL(smc, is_smcd) \
209 SMC_STAT_RMB(smc, buf_size_small, is_smcd, false)
210
211 #define SMC_STAT_RMB_RX_SIZE_SMALL(smc, is_smcd) \
212 SMC_STAT_RMB(smc, buf_size_small, is_smcd, true)
213
214 #define SMC_STAT_RMB_RX_FULL(smc, is_smcd) \
215 SMC_STAT_RMB(smc, buf_full, is_smcd, true)
216
217 #define SMC_STAT_INC(_smc, type) \
218 do { \
219 typeof(_smc) __smc = _smc; \
220 bool is_smcd = !(__smc)->conn.lnk; \
221 struct net *net = sock_net(&(__smc)->sk); \
222 struct smc_stats __percpu *smc_stats = net->smc.smc_stats; \
223 if ((is_smcd)) \
224 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].type); \
225 else \
226 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].type); \
227 } \
228 while (0)
229
230 #define SMC_STAT_CLNT_SUCC_INC(net, _aclc) \
231 do { \
232 typeof(_aclc) acl = (_aclc); \
233 bool is_v2 = (acl->hdr.version == SMC_V2); \
234 bool is_smcd = (acl->hdr.typev1 == SMC_TYPE_D); \
235 struct smc_stats __percpu *smc_stats = (net)->smc.smc_stats; \
236 if (is_v2 && is_smcd) \
237 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].clnt_v2_succ_cnt); \
238 else if (is_v2 && !is_smcd) \
239 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].clnt_v2_succ_cnt); \
240 else if (!is_v2 && is_smcd) \
241 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].clnt_v1_succ_cnt); \
242 else if (!is_v2 && !is_smcd) \
243 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].clnt_v1_succ_cnt); \
244 } \
245 while (0)
246
247 #define SMC_STAT_SERV_SUCC_INC(net, _ini) \
248 do { \
249 typeof(_ini) i = (_ini); \
250 bool is_smcd = (i->is_smcd); \
251 u8 version = is_smcd ? i->smcd_version : i->smcr_version; \
252 bool is_v2 = (version & SMC_V2); \
253 typeof(net->smc.smc_stats) smc_stats = (net)->smc.smc_stats; \
254 if (is_v2 && is_smcd) \
255 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].srv_v2_succ_cnt); \
256 else if (is_v2 && !is_smcd) \
257 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].srv_v2_succ_cnt); \
258 else if (!is_v2 && is_smcd) \
259 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].srv_v1_succ_cnt); \
260 else if (!is_v2 && !is_smcd) \
261 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].srv_v1_succ_cnt); \
262 } \
263 while (0)
264
265 int smc_nl_get_stats(struct sk_buff *skb, struct netlink_callback *cb);
266 int smc_nl_get_fback_stats(struct sk_buff *skb, struct netlink_callback *cb);
267 int smc_stats_init(struct net *net);
268 void smc_stats_exit(struct net *net);
269
270 #endif /* NET_SMC_SMC_STATS_H_ */
271
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