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 30 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 = fls64((l) >> 13); \ 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) \ 100 break; \ 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); \ 104 } \ 105 while (0) 106 107 #define SMC_STAT_TX_PAYLOAD(_smc, length, rcode) \ 108 do { \ 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; \ 115 if (is_smcd) \ 116 SMC_STAT_PAYLOAD_SUB(_smc_stats, SMC_TYPE_D, tx, _len, _rc); \ 117 else \ 118 SMC_STAT_PAYLOAD_SUB(_smc_stats, SMC_TYPE_R, tx, _len, _rc); \ 119 } \ 120 while (0) 121 122 #define SMC_STAT_RX_PAYLOAD(_smc, length, rcode) \ 123 do { \ 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; \ 130 if (is_smcd) \ 131 SMC_STAT_PAYLOAD_SUB(_smc_stats, SMC_TYPE_D, rx, _len, _rc); \ 132 else \ 133 SMC_STAT_PAYLOAD_SUB(_smc_stats, SMC_TYPE_R, rx, _len, _rc); \ 134 } \ 135 while (0) 136 137 #define SMC_STAT_RMB_SIZE_SUB(_smc_stats, _tech, k, _len) \ 138 do { \ 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]); \ 145 } \ 146 while (0) 147 148 #define SMC_STAT_RMB_SUB(_smc_stats, type, t, key) \ 149 this_cpu_inc((*(_smc_stats)).smc[t].rmb ## _ ## key.type ## _cnt) 150 151 #define SMC_STAT_RMB_SIZE(_smc, _is_smcd, _is_rx, _len) \ 152 do { \ 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); \ 166 } \ 167 while (0) 168 169 #define SMC_STAT_RMB(_smc, type, _is_smcd, _is_rx) \ 170 do { \ 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); \ 183 } \ 184 while (0) 185 186 #define SMC_STAT_BUF_REUSE(smc, is_smcd, is_rx) \ 187 SMC_STAT_RMB(smc, reuse, is_smcd, is_rx) 188 189 #define SMC_STAT_RMB_ALLOC(smc, is_smcd, is_rx) \ 190 SMC_STAT_RMB(smc, alloc, is_smcd, is_rx) 191 192 #define SMC_STAT_RMB_DOWNGRADED(smc, is_smcd, is_rx) \ 193 SMC_STAT_RMB(smc, dgrade, is_smcd, is_rx) 194 195 #define SMC_STAT_RMB_TX_PEER_FULL(smc, is_smcd) \ 196 SMC_STAT_RMB(smc, buf_full_peer, is_smcd, false) 197 198 #define SMC_STAT_RMB_TX_FULL(smc, is_smcd) \ 199 SMC_STAT_RMB(smc, buf_full, is_smcd, false) 200 201 #define SMC_STAT_RMB_TX_PEER_SIZE_SMALL(smc, is_smcd) \ 202 SMC_STAT_RMB(smc, buf_size_small_peer, is_smcd, false) 203 204 #define SMC_STAT_RMB_TX_SIZE_SMALL(smc, is_smcd) \ 205 SMC_STAT_RMB(smc, buf_size_small, is_smcd, false) 206 207 #define SMC_STAT_RMB_RX_SIZE_SMALL(smc, is_smcd) \ 208 SMC_STAT_RMB(smc, buf_size_small, is_smcd, true) 209 210 #define SMC_STAT_RMB_RX_FULL(smc, is_smcd) \ 211 SMC_STAT_RMB(smc, buf_full, is_smcd, true) 212 213 #define SMC_STAT_INC(_smc, type) \ 214 do { \ 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; \ 219 if ((is_smcd)) \ 220 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].type); \ 221 else \ 222 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].type); \ 223 } \ 224 while (0) 225 226 #define SMC_STAT_CLNT_SUCC_INC(net, _aclc) \ 227 do { \ 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); \ 240 } \ 241 while (0) 242 243 #define SMC_STAT_SERV_SUCC_INC(net, _ini) \ 244 do { \ 245 typeof(_ini) i = (_ini); \ 246 bool is_v2 = (i->smcd_version & SMC_V2); \ 247 bool is_smcd = (i->is_smcd); \ 248 typeof(net->smc.smc_stats) smc_stats = (net)->smc.smc_stats; \ 249 if (is_v2 && is_smcd) \ 250 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].srv_v2_succ_cnt); \ 251 else if (is_v2 && !is_smcd) \ 252 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].srv_v2_succ_cnt); \ 253 else if (!is_v2 && is_smcd) \ 254 this_cpu_inc(smc_stats->smc[SMC_TYPE_D].srv_v1_succ_cnt); \ 255 else if (!is_v2 && !is_smcd) \ 256 this_cpu_inc(smc_stats->smc[SMC_TYPE_R].srv_v1_succ_cnt); \ 257 } \ 258 while (0) 259 260 int smc_nl_get_stats(struct sk_buff *skb, struct netlink_callback *cb); 261 int smc_nl_get_fback_stats(struct sk_buff *skb, struct netlink_callback *cb); 262 int smc_stats_init(struct net *net); 263 void smc_stats_exit(struct net *net); 264 265 #endif /* NET_SMC_SMC_STATS_H_ */ 266