1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Shared Memory Communications over RDMA (SMC-R) and RoCE
5 * Macros for SMC statistics
7 * Copyright IBM Corp. 2021
9 * Author(s): Guvenc Gulce
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>
22 #define SMC_MAX_FBACK_RSN_CNT 30
37 struct smc_stats_fback {
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];
49 struct smc_stats_rmbcnt {
50 u64 buf_size_small_peer_cnt;
51 u64 buf_size_small_cnt;
52 u64 buf_full_peer_cnt;
59 struct smc_stats_memsize {
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;
85 struct smc_stats_tech smc[2];
86 u64 clnt_hshake_err_cnt;
87 u64 srv_hshake_err_cnt;
90 #define SMC_STAT_PAYLOAD_SUB(_smc_stats, _tech, key, _len, _rc) \
92 typeof(_smc_stats) stats = (_smc_stats); \
93 typeof(_tech) t = (_tech); \
94 typeof(_len) l = (_len); \
95 int _pos = fls64((l) >> 13); \
96 typeof(_rc) r = (_rc); \
97 int m = SMC_BUF_MAX - 1; \
98 this_cpu_inc((*stats).smc[t].key ## _cnt); \
101 _pos = (_pos < m) ? ((l == 1 << (_pos + 12)) ? _pos - 1 : _pos) : m; \
102 this_cpu_inc((*stats).smc[t].key ## _pd.buf[_pos]); \
103 this_cpu_add((*stats).smc[t].key ## _bytes, r); \
107 #define SMC_STAT_TX_PAYLOAD(_smc, length, rcode) \
109 typeof(_smc) __smc = _smc; \
110 struct net *_net = sock_net(&__smc->sk); \
111 struct smc_stats __percpu *_smc_stats = _net->smc.smc_stats; \
112 typeof(length) _len = (length); \
113 typeof(rcode) _rc = (rcode); \
114 bool is_smcd = !__smc->conn.lnk; \
116 SMC_STAT_PAYLOAD_SUB(_smc_stats, SMC_TYPE_D, tx, _len, _rc); \
118 SMC_STAT_PAYLOAD_SUB(_smc_stats, SMC_TYPE_R, tx, _len, _rc); \
122 #define SMC_STAT_RX_PAYLOAD(_smc, length, rcode) \
124 typeof(_smc) __smc = _smc; \
125 struct net *_net = sock_net(&__smc->sk); \
126 struct smc_stats __percpu *_smc_stats = _net->smc.smc_stats; \
127 typeof(length) _len = (length); \
128 typeof(rcode) _rc = (rcode); \
129 bool is_smcd = !__smc->conn.lnk; \
131 SMC_STAT_PAYLOAD_SUB(_smc_stats, SMC_TYPE_D, rx, _len, _rc); \
133 SMC_STAT_PAYLOAD_SUB(_smc_stats, SMC_TYPE_R, rx, _len, _rc); \
137 #define SMC_STAT_RMB_SIZE_SUB(_smc_stats, _tech, k, _len) \
139 typeof(_len) _l = (_len); \
140 typeof(_tech) t = (_tech); \
141 int _pos = fls((_l) >> 13); \
142 int m = SMC_BUF_MAX - 1; \
143 _pos = (_pos < m) ? ((_l == 1 << (_pos + 12)) ? _pos - 1 : _pos) : m; \
144 this_cpu_inc((*(_smc_stats)).smc[t].k ## _rmbsize.buf[_pos]); \
148 #define SMC_STAT_RMB_SUB(_smc_stats, type, t, key) \
149 this_cpu_inc((*(_smc_stats)).smc[t].rmb ## _ ## key.type ## _cnt)
151 #define SMC_STAT_RMB_SIZE(_smc, _is_smcd, _is_rx, _len) \
153 struct net *_net = sock_net(&(_smc)->sk); \
154 struct smc_stats __percpu *_smc_stats = _net->smc.smc_stats; \
155 typeof(_is_smcd) is_d = (_is_smcd); \
156 typeof(_is_rx) is_r = (_is_rx); \
157 typeof(_len) l = (_len); \
158 if ((is_d) && (is_r)) \
159 SMC_STAT_RMB_SIZE_SUB(_smc_stats, SMC_TYPE_D, rx, l); \
160 if ((is_d) && !(is_r)) \
161 SMC_STAT_RMB_SIZE_SUB(_smc_stats, SMC_TYPE_D, tx, l); \
162 if (!(is_d) && (is_r)) \
163 SMC_STAT_RMB_SIZE_SUB(_smc_stats, SMC_TYPE_R, rx, l); \
164 if (!(is_d) && !(is_r)) \
165 SMC_STAT_RMB_SIZE_SUB(_smc_stats, SMC_TYPE_R, tx, l); \
169 #define SMC_STAT_RMB(_smc, type, _is_smcd, _is_rx) \
171 struct net *net = sock_net(&(_smc)->sk); \
172 struct smc_stats __percpu *_smc_stats = net->smc.smc_stats; \
173 typeof(_is_smcd) is_d = (_is_smcd); \
174 typeof(_is_rx) is_r = (_is_rx); \
175 if ((is_d) && (is_r)) \
176 SMC_STAT_RMB_SUB(_smc_stats, type, SMC_TYPE_D, rx); \
177 if ((is_d) && !(is_r)) \
178 SMC_STAT_RMB_SUB(_smc_stats, type, SMC_TYPE_D, tx); \
179 if (!(is_d) && (is_r)) \
180 SMC_STAT_RMB_SUB(_smc_stats, type, SMC_TYPE_R, rx); \
181 if (!(is_d) && !(is_r)) \
182 SMC_STAT_RMB_SUB(_smc_stats, type, SMC_TYPE_R, tx); \
186 #define SMC_STAT_BUF_REUSE(smc, is_smcd, is_rx) \
187 SMC_STAT_RMB(smc, reuse, is_smcd, is_rx)
189 #define SMC_STAT_RMB_ALLOC(smc, is_smcd, is_rx) \
190 SMC_STAT_RMB(smc, alloc, is_smcd, is_rx)
192 #define SMC_STAT_RMB_DOWNGRADED(smc, is_smcd, is_rx) \
193 SMC_STAT_RMB(smc, dgrade, is_smcd, is_rx)
195 #define SMC_STAT_RMB_TX_PEER_FULL(smc, is_smcd) \
196 SMC_STAT_RMB(smc, buf_full_peer, is_smcd, false)
198 #define SMC_STAT_RMB_TX_FULL(smc, is_smcd) \
199 SMC_STAT_RMB(smc, buf_full, is_smcd, false)
201 #define SMC_STAT_RMB_TX_PEER_SIZE_SMALL(smc, is_smcd) \
202 SMC_STAT_RMB(smc, buf_size_small_peer, is_smcd, false)
204 #define SMC_STAT_RMB_TX_SIZE_SMALL(smc, is_smcd) \
205 SMC_STAT_RMB(smc, buf_size_small, is_smcd, false)
207 #define SMC_STAT_RMB_RX_SIZE_SMALL(smc, is_smcd) \
208 SMC_STAT_RMB(smc, buf_size_small, is_smcd, true)
210 #define SMC_STAT_RMB_RX_FULL(smc, is_smcd) \
211 SMC_STAT_RMB(smc, buf_full, is_smcd, true)
213 #define SMC_STAT_INC(_smc, type) \
215 typeof(_smc) __smc = _smc; \
216 bool is_smcd = !(__smc)->conn.lnk; \
217 struct net *net = sock_net(&(__smc)->sk); \
218 struct smc_stats __percpu *smc_stats = net->smc.smc_stats; \
220 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].type); \
222 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].type); \
226 #define SMC_STAT_CLNT_SUCC_INC(net, _aclc) \
228 typeof(_aclc) acl = (_aclc); \
229 bool is_v2 = (acl->hdr.version == SMC_V2); \
230 bool is_smcd = (acl->hdr.typev1 == SMC_TYPE_D); \
231 struct smc_stats __percpu *smc_stats = (net)->smc.smc_stats; \
232 if (is_v2 && is_smcd) \
233 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].clnt_v2_succ_cnt); \
234 else if (is_v2 && !is_smcd) \
235 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].clnt_v2_succ_cnt); \
236 else if (!is_v2 && is_smcd) \
237 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].clnt_v1_succ_cnt); \
238 else if (!is_v2 && !is_smcd) \
239 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].clnt_v1_succ_cnt); \
243 #define SMC_STAT_SERV_SUCC_INC(net, _ini) \
245 typeof(_ini) i = (_ini); \
246 bool is_smcd = (i->is_smcd); \
247 u8 version = is_smcd ? i->smcd_version : i->smcr_version; \
248 bool is_v2 = (version & SMC_V2); \
249 typeof(net->smc.smc_stats) smc_stats = (net)->smc.smc_stats; \
250 if (is_v2 && is_smcd) \
251 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].srv_v2_succ_cnt); \
252 else if (is_v2 && !is_smcd) \
253 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].srv_v2_succ_cnt); \
254 else if (!is_v2 && is_smcd) \
255 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].srv_v1_succ_cnt); \
256 else if (!is_v2 && !is_smcd) \
257 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].srv_v1_succ_cnt); \
261 int smc_nl_get_stats(struct sk_buff *skb, struct netlink_callback *cb);
262 int smc_nl_get_fback_stats(struct sk_buff *skb, struct netlink_callback *cb);
263 int smc_stats_init(struct net *net);
264 void smc_stats_exit(struct net *net);
266 #endif /* NET_SMC_SMC_STATS_H_ */