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