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
24enum {
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
37struct smc_stats_fback {
38 int fback_code;
39 u16 count;
40};
41
42struct 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
49struct 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
59struct smc_stats_memsize {
60 u64 buf[SMC_BUF_MAX];
61};
62
63struct 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 u64 rx_rmbuse;
83 u64 tx_rmbuse;
84};
85
86struct smc_stats {
87 struct smc_stats_tech smc[2];
88 u64 clnt_hshake_err_cnt;
89 u64 srv_hshake_err_cnt;
90};
91
92#define SMC_STAT_PAYLOAD_SUB(_smc_stats, _tech, key, _len, _rc) \
93do { \
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 ## _cnt); \
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 ## _pd.buf[_pos]); \
106 this_cpu_add((*stats).smc[t].key ## _bytes, r); \
107} \
108while (0)
109
110#define SMC_STAT_TX_PAYLOAD(_smc, length, rcode) \
111do { \
112 typeof(_smc) __smc = _smc; \
113 struct net *_net = sock_net(&__smc->sk); \
114 struct smc_stats __percpu *_smc_stats = _net->smc.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_stats, SMC_TYPE_D, tx, _len, _rc); \
120 else \
121 SMC_STAT_PAYLOAD_SUB(_smc_stats, SMC_TYPE_R, tx, _len, _rc); \
122} \
123while (0)
124
125#define SMC_STAT_RX_PAYLOAD(_smc, length, rcode) \
126do { \
127 typeof(_smc) __smc = _smc; \
128 struct net *_net = sock_net(&__smc->sk); \
129 struct smc_stats __percpu *_smc_stats = _net->smc.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_stats, SMC_TYPE_D, rx, _len, _rc); \
135 else \
136 SMC_STAT_PAYLOAD_SUB(_smc_stats, SMC_TYPE_R, rx, _len, _rc); \
137} \
138while (0)
139
140#define SMC_STAT_RMB_SIZE_SUB(_smc_stats, _tech, k, _is_add, _len) \
141do { \
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 ## _rmbsize.buf[_pos]); \
154 this_cpu_add((*stats).smc[t].k ## _rmbuse, _l); \
155 } else { \
156 this_cpu_sub((*stats).smc[t].k ## _rmbuse, _l); \
157 } \
158} \
159while (0)
160
161#define SMC_STAT_RMB_SUB(_smc_stats, type, t, key) \
162 this_cpu_inc((*(_smc_stats)).smc[t].rmb ## _ ## key.type ## _cnt)
163
164#define SMC_STAT_RMB_SIZE(_smc, _is_smcd, _is_rx, _is_add, _len) \
165do { \
166 struct net *_net = sock_net(&(_smc)->sk); \
167 struct smc_stats __percpu *_smc_stats = _net->smc.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_stats, SMC_TYPE_D, rx, is_add, l); \
174 if ((is_d) && !(is_r)) \
175 SMC_STAT_RMB_SIZE_SUB(_smc_stats, SMC_TYPE_D, tx, is_add, l); \
176 if (!(is_d) && (is_r)) \
177 SMC_STAT_RMB_SIZE_SUB(_smc_stats, SMC_TYPE_R, rx, is_add, l); \
178 if (!(is_d) && !(is_r)) \
179 SMC_STAT_RMB_SIZE_SUB(_smc_stats, SMC_TYPE_R, tx, is_add, l); \
180} \
181while (0)
182
183#define SMC_STAT_RMB(_smc, type, _is_smcd, _is_rx) \
184do { \
185 struct net *net = sock_net(&(_smc)->sk); \
186 struct smc_stats __percpu *_smc_stats = net->smc.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, type, SMC_TYPE_D, rx); \
191 if ((is_d) && !(is_r)) \
192 SMC_STAT_RMB_SUB(_smc_stats, type, SMC_TYPE_D, tx); \
193 if (!(is_d) && (is_r)) \
194 SMC_STAT_RMB_SUB(_smc_stats, type, SMC_TYPE_R, rx); \
195 if (!(is_d) && !(is_r)) \
196 SMC_STAT_RMB_SUB(_smc_stats, type, SMC_TYPE_R, tx); \
197} \
198while (0)
199
200#define SMC_STAT_BUF_REUSE(smc, is_smcd, is_rx) \
201 SMC_STAT_RMB(smc, reuse, is_smcd, is_rx)
202
203#define SMC_STAT_RMB_ALLOC(smc, is_smcd, is_rx) \
204 SMC_STAT_RMB(smc, alloc, is_smcd, is_rx)
205
206#define SMC_STAT_RMB_DOWNGRADED(smc, is_smcd, is_rx) \
207 SMC_STAT_RMB(smc, dgrade, is_smcd, is_rx)
208
209#define SMC_STAT_RMB_TX_PEER_FULL(smc, is_smcd) \
210 SMC_STAT_RMB(smc, buf_full_peer, is_smcd, false)
211
212#define SMC_STAT_RMB_TX_FULL(smc, is_smcd) \
213 SMC_STAT_RMB(smc, buf_full, is_smcd, false)
214
215#define SMC_STAT_RMB_TX_PEER_SIZE_SMALL(smc, is_smcd) \
216 SMC_STAT_RMB(smc, buf_size_small_peer, is_smcd, false)
217
218#define SMC_STAT_RMB_TX_SIZE_SMALL(smc, is_smcd) \
219 SMC_STAT_RMB(smc, buf_size_small, is_smcd, false)
220
221#define SMC_STAT_RMB_RX_SIZE_SMALL(smc, is_smcd) \
222 SMC_STAT_RMB(smc, buf_size_small, is_smcd, true)
223
224#define SMC_STAT_RMB_RX_FULL(smc, is_smcd) \
225 SMC_STAT_RMB(smc, buf_full, is_smcd, true)
226
227#define SMC_STAT_INC(_smc, type) \
228do { \
229 typeof(_smc) __smc = _smc; \
230 bool is_smcd = !(__smc)->conn.lnk; \
231 struct net *net = sock_net(&(__smc)->sk); \
232 struct smc_stats __percpu *smc_stats = net->smc.smc_stats; \
233 if ((is_smcd)) \
234 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].type); \
235 else \
236 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].type); \
237} \
238while (0)
239
240#define SMC_STAT_CLNT_SUCC_INC(net, _aclc) \
241do { \
242 typeof(_aclc) acl = (_aclc); \
243 bool is_v2 = (acl->hdr.version == SMC_V2); \
244 bool is_smcd = (acl->hdr.typev1 == SMC_TYPE_D); \
245 struct smc_stats __percpu *smc_stats = (net)->smc.smc_stats; \
246 if (is_v2 && is_smcd) \
247 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].clnt_v2_succ_cnt); \
248 else if (is_v2 && !is_smcd) \
249 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].clnt_v2_succ_cnt); \
250 else if (!is_v2 && is_smcd) \
251 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].clnt_v1_succ_cnt); \
252 else if (!is_v2 && !is_smcd) \
253 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].clnt_v1_succ_cnt); \
254} \
255while (0)
256
257#define SMC_STAT_SERV_SUCC_INC(net, _ini) \
258do { \
259 typeof(_ini) i = (_ini); \
260 bool is_smcd = (i->is_smcd); \
261 u8 version = is_smcd ? i->smcd_version : i->smcr_version; \
262 bool is_v2 = (version & SMC_V2); \
263 typeof(net->smc.smc_stats) smc_stats = (net)->smc.smc_stats; \
264 if (is_v2 && is_smcd) \
265 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].srv_v2_succ_cnt); \
266 else if (is_v2 && !is_smcd) \
267 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].srv_v2_succ_cnt); \
268 else if (!is_v2 && is_smcd) \
269 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].srv_v1_succ_cnt); \
270 else if (!is_v2 && !is_smcd) \
271 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].srv_v1_succ_cnt); \
272} \
273while (0)
274
275int smc_nl_get_stats(struct sk_buff *skb, struct netlink_callback *cb);
276int smc_nl_get_fback_stats(struct sk_buff *skb, struct netlink_callback *cb);
277int smc_stats_init(struct net *net);
278void smc_stats_exit(struct net *net);
279
280#endif /* NET_SMC_SMC_STATS_H_ */
281

source code of linux/net/smc/smc_stats.h