cxgb_tom.h revision 241733
1/************************************************************************** 2 3Copyright (c) 2007, 2009 Chelsio Inc. 4All rights reserved. 5 6Redistribution and use in source and binary forms, with or without 7modification, are permitted provided that the following conditions are met: 8 9 1. Redistributions of source code must retain the above copyright notice, 10 this list of conditions and the following disclaimer. 11 12 2. Neither the name of the Chelsio Corporation nor the names of its 13 contributors may be used to endorse or promote products derived from 14 this software without specific prior written permission. 15 16THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 20LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26POSSIBILITY OF SUCH DAMAGE. 27 28 29$FreeBSD: head/sys/dev/cxgb/ulp/tom/cxgb_tom.h 241733 2012-10-19 13:26:40Z ed $ 30 31***************************************************************************/ 32#ifndef CXGB_TOM_H_ 33#define CXGB_TOM_H_ 34#include <sys/protosw.h> 35#include <netinet/toecore.h> 36 37MALLOC_DECLARE(M_CXGB); 38 39#define KTR_CXGB KTR_SPARE3 40 41#define LISTEN_HASH_SIZE 32 42 43/* 44 * Holds the size, base address, free list start, etc of the TID, server TID, 45 * and active-open TID tables for a offload device. 46 * The tables themselves are allocated dynamically. 47 */ 48struct tid_info { 49 void **tid_tab; 50 unsigned int ntids; 51 volatile unsigned int tids_in_use; 52 53 union listen_entry *stid_tab; 54 unsigned int nstids; 55 unsigned int stid_base; 56 57 union active_open_entry *atid_tab; 58 unsigned int natids; 59 unsigned int atid_base; 60 61 /* 62 * The following members are accessed R/W so we put them in their own 63 * cache lines. TOM_XXX: actually do what is said here. 64 * 65 * XXX We could combine the atid fields above with the lock here since 66 * atids are use once (unlike other tids). OTOH the above fields are 67 * usually in cache due to tid_tab. 68 */ 69 struct mtx atid_lock; 70 union active_open_entry *afree; 71 unsigned int atids_in_use; 72 73 struct mtx stid_lock; 74 union listen_entry *sfree; 75 unsigned int stids_in_use; 76}; 77 78struct tom_data { 79 struct toedev tod; 80 81 /* 82 * toepcb's associated with this TOE device are either on the 83 * toep list or in the synq of a listening socket in lctx hash. 84 */ 85 struct mtx toep_list_lock; 86 TAILQ_HEAD(, toepcb) toep_list; 87 88 struct l2t_data *l2t; 89 struct tid_info tid_maps; 90 91 /* 92 * The next two locks listen_lock, and tid_release_lock are used rarely 93 * so we let them potentially share a cacheline. 94 */ 95 96 LIST_HEAD(, listen_ctx) *listen_hash; 97 u_long listen_mask; 98 int lctx_count; /* # of lctx in the hash table */ 99 struct mtx lctx_hash_lock; 100 101 void **tid_release_list; 102 struct mtx tid_release_lock; 103 struct task tid_release_task; 104}; 105 106struct synq_entry { 107 TAILQ_ENTRY(synq_entry) link; /* listen_ctx's synq link */ 108 int flags; /* same as toepcb's tp_flags */ 109 int tid; 110 struct mbuf *m; /* backpointer to containing mbuf */ 111 struct listen_ctx *lctx; /* backpointer to listen ctx */ 112 struct cpl_pass_establish *cpl; 113 struct toepcb *toep; 114 struct l2t_entry *e; 115 uint32_t iss; 116 uint32_t ts; 117 uint32_t opt0h; 118 uint32_t qset; 119 int rx_credits; 120 volatile u_int refcnt; 121 122#define RPL_OK 0 /* ok to reply */ 123#define RPL_DONE 1 /* replied already */ 124#define RPL_DONT 2 /* don't reply */ 125 volatile u_int reply; /* see above. */ 126}; 127 128#define LCTX_RPL_PENDING 1 /* waiting for CPL_PASS_OPEN_RPL */ 129 130struct listen_ctx { 131 LIST_ENTRY(listen_ctx) link; /* listen hash linkage */ 132 volatile int refcnt; 133 int stid; 134 int flags; 135 struct inpcb *inp; /* listening socket's inp */ 136 int qset; 137 TAILQ_HEAD(, synq_entry) synq; 138}; 139 140void t3_process_tid_release_list(void *data, int pending); 141 142static inline struct tom_data * 143t3_tomdata(struct toedev *tod) 144{ 145 146 return (__containerof(tod, struct tom_data, tod)); 147} 148 149union listen_entry { 150 void *ctx; 151 union listen_entry *next; 152}; 153 154union active_open_entry { 155 void *ctx; 156 union active_open_entry *next; 157}; 158 159/* 160 * Map an ATID or STID to their entries in the corresponding TID tables. 161 */ 162static inline union active_open_entry *atid2entry(const struct tid_info *t, 163 unsigned int atid) 164{ 165 return &t->atid_tab[atid - t->atid_base]; 166} 167 168 169static inline union listen_entry *stid2entry(const struct tid_info *t, 170 unsigned int stid) 171{ 172 return &t->stid_tab[stid - t->stid_base]; 173} 174 175/* 176 * Find the connection corresponding to a TID. 177 */ 178static inline void *lookup_tid(const struct tid_info *t, unsigned int tid) 179{ 180 void *p; 181 182 if (tid >= t->ntids) 183 return (NULL); 184 185 p = t->tid_tab[tid]; 186 if (p < (void *)t->tid_tab || p >= (void *)&t->atid_tab[t->natids]) 187 return (p); 188 189 return (NULL); 190} 191 192/* 193 * Find the connection corresponding to a server TID. 194 */ 195static inline void *lookup_stid(const struct tid_info *t, unsigned int tid) 196{ 197 void *p; 198 199 if (tid < t->stid_base || tid >= t->stid_base + t->nstids) 200 return (NULL); 201 202 p = stid2entry(t, tid)->ctx; 203 if (p < (void *)t->tid_tab || p >= (void *)&t->atid_tab[t->natids]) 204 return (p); 205 206 return (NULL); 207} 208 209/* 210 * Find the connection corresponding to an active-open TID. 211 */ 212static inline void *lookup_atid(const struct tid_info *t, unsigned int tid) 213{ 214 void *p; 215 216 if (tid < t->atid_base || tid >= t->atid_base + t->natids) 217 return (NULL); 218 219 p = atid2entry(t, tid)->ctx; 220 if (p < (void *)t->tid_tab || p >= (void *)&t->atid_tab[t->natids]) 221 return (p); 222 223 return (NULL); 224} 225 226static inline uint32_t 227calc_opt2(int cpu_idx) 228{ 229 uint32_t opt2 = F_CPU_INDEX_VALID | V_CPU_INDEX(cpu_idx); 230 231 /* 3 = highspeed CC algorithm */ 232 opt2 |= V_FLAVORS_VALID(1) | V_CONG_CONTROL_FLAVOR(3) | 233 V_PACING_FLAVOR(1); 234 235 /* coalesce and push bit semantics */ 236 opt2 |= F_RX_COALESCE_VALID | V_RX_COALESCE(3); 237 238 return (htobe32(opt2)); 239} 240 241/* cxgb_tom.c */ 242struct toepcb *toepcb_alloc(struct toedev *); 243void toepcb_free(struct toepcb *); 244 245/* cxgb_cpl_io.c */ 246void t3_init_cpl_io(struct adapter *); 247int t3_push_frames(struct socket *, int); 248int t3_connect(struct toedev *, struct socket *, struct rtentry *, 249 struct sockaddr *); 250int t3_tod_output(struct toedev *, struct tcpcb *); 251int t3_send_rst(struct toedev *, struct tcpcb *); 252int t3_send_fin(struct toedev *, struct tcpcb *); 253void insert_tid(struct tom_data *, void *, unsigned int); 254void update_tid(struct tom_data *, void *, unsigned int); 255void remove_tid(struct tom_data *, unsigned int); 256uint32_t calc_opt0h(struct socket *, int, int, struct l2t_entry *); 257uint32_t calc_opt0l(struct socket *, int); 258void queue_tid_release(struct toedev *, unsigned int); 259void offload_socket(struct socket *, struct toepcb *); 260void undo_offload_socket(struct socket *); 261int select_rcv_wscale(void); 262unsigned long select_rcv_wnd(struct socket *); 263int find_best_mtu_idx(struct adapter *, struct in_conninfo *, int); 264void make_established(struct socket *, uint32_t, uint32_t, uint16_t); 265void t3_rcvd(struct toedev *, struct tcpcb *); 266void t3_pcb_detach(struct toedev *, struct tcpcb *); 267void send_abort_rpl(struct toedev *, int, int); 268void release_tid(struct toedev *, unsigned int, int); 269 270/* cxgb_listen.c */ 271void t3_init_listen_cpl_handlers(struct adapter *); 272int t3_listen_start(struct toedev *, struct tcpcb *); 273int t3_listen_stop(struct toedev *, struct tcpcb *); 274void t3_syncache_added(struct toedev *, void *); 275void t3_syncache_removed(struct toedev *, void *); 276int t3_syncache_respond(struct toedev *, void *, struct mbuf *); 277int do_abort_req_synqe(struct sge_qset *, struct rsp_desc *, struct mbuf *); 278int do_abort_rpl_synqe(struct sge_qset *, struct rsp_desc *, struct mbuf *); 279void t3_offload_socket(struct toedev *, void *, struct socket *); 280#endif 281