2 * Copyright (c) 2012, 2015 Chelsio Communications, Inc.
4 * Written by: Navdeep Parhar <np@FreeBSD.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #define LISTEN_HASH_SIZE 32
38 * Min receive window. We want it to be large enough to accommodate receive
39 * coalescing, handle jumbo frames, and not trigger sender SWS avoidance.
41 #define MIN_RCV_WND (24 * 1024U)
44 * Max receive window supported by HW in bytes. Only a small part of it can
45 * be set through option0, the rest needs to be set through RX_DATA_ACK.
47 #define MAX_RCV_WND ((1U << 27) - 1)
49 #define DDP_RSVD_WIN (16 * 1024U)
50 #define SB_DDP_INDICATE SB_IN_TOE /* soreceive must respond to indicate */
52 #define USE_DDP_RX_FLOW_CONTROL
54 #define PPOD_SZ(n) ((n) * sizeof(struct pagepod))
55 #define PPOD_SIZE (PPOD_SZ(1))
59 TPF_ATTACHED = (1 << 0), /* a tcpcb refers to this toepcb */
60 TPF_FLOWC_WR_SENT = (1 << 1), /* firmware flow context WR sent */
61 TPF_TX_DATA_SENT = (1 << 2), /* some data sent */
62 TPF_TX_SUSPENDED = (1 << 3), /* tx suspended for lack of resources */
63 TPF_SEND_FIN = (1 << 4), /* send FIN after all pending data */
64 TPF_FIN_SENT = (1 << 5), /* FIN has been sent */
65 TPF_ABORT_SHUTDOWN = (1 << 6), /* connection abort is in progress */
66 TPF_CPL_PENDING = (1 << 7), /* haven't received the last CPL */
67 TPF_SYNQE = (1 << 8), /* synq_entry, not really a toepcb */
68 TPF_SYNQE_NEEDFREE = (1 << 9), /* synq_entry was malloc'd separately */
69 TPF_SYNQE_TCPDDP = (1 << 10), /* ulp_mode TCPDDP in toepcb */
70 TPF_SYNQE_EXPANDED = (1 << 11), /* toepcb ready, tid context updated */
71 TPF_SYNQE_HAS_L2TE = (1 << 12), /* we've replied to PASS_ACCEPT_REQ */
75 DDP_OK = (1 << 0), /* OK to turn on DDP */
76 DDP_SC_REQ = (1 << 1), /* state change (on/off) requested */
77 DDP_ON = (1 << 2), /* DDP is turned on */
78 DDP_BUF0_ACTIVE = (1 << 3), /* buffer 0 in use (not invalidated) */
79 DDP_BUF1_ACTIVE = (1 << 4), /* buffer 1 in use (not invalidated) */
80 DDP_TASK_ACTIVE = (1 << 5), /* requeue task is queued / running */
81 DDP_DEAD = (1 << 6), /* toepcb is shutting down */
84 struct ofld_tx_sdesc {
85 uint32_t plen; /* payload length */
86 uint8_t tx_credits; /* firmware tx credits (unit is 16B) */
92 u_int pr_page_shift[4];
93 uint32_t pr_tag_mask; /* hardware tagmask for this region. */
94 uint32_t pr_invalid_bit; /* OR with this to invalidate tag. */
95 uint32_t pr_alias_mask; /* AND with tag to get alias bits. */
96 u_int pr_alias_shift; /* shift this much for first alias bit. */
100 struct ppod_reservation {
101 struct ppod_region *prsv_pr;
102 uint32_t prsv_tag; /* Full tag: pgsz, alias, tag, color */
107 TAILQ_ENTRY(pageset) link;
111 int offset; /* offset in first page */
113 struct ppod_reservation prsv;
118 TAILQ_HEAD(pagesetq, pageset);
120 #define PS_WIRED 0x0001 /* Pages wired rather than held. */
121 #define PS_PPODS_WRITTEN 0x0002 /* Page pods written to the card. */
123 #define EXT_FLAG_AIOTX EXT_FLAG_VENDOR1
132 struct aiotx_buffer {
139 TAILQ_ENTRY(toepcb) link; /* toep_list */
140 u_int flags; /* miscellaneous flags */
143 struct inpcb *inp; /* backpointer to host stack's PCB */
145 struct vi_info *vi; /* virtual interface */
146 struct sge_wrq *ofld_txq;
147 struct sge_ofld_rxq *ofld_rxq;
148 struct sge_wrq *ctrlq;
149 struct l2t_entry *l2te; /* L2 table entry used by this connection */
150 struct clip_entry *ce; /* CLIP table entry used by this tid */
151 int tid; /* Connection identifier */
153 /* tx credit handling */
154 u_int tx_total; /* total tx WR credits (in 16B units) */
155 u_int tx_credits; /* tx WR credits (in 16B units) available */
156 u_int tx_nocompl; /* tx WR credits since last compl request */
157 u_int plen_nocompl; /* payload since last compl request */
159 /* rx credit handling */
160 u_int sb_cc; /* last noted value of so_rcv->sb_cc */
161 int rx_credits; /* rx credits (in bytes) to be returned to hw */
163 u_int ulp_mode; /* ULP mode */
166 struct mbufq ulp_pduq; /* PDUs waiting to be sent out. */
167 struct mbufq ulp_pdu_reclaimq;
170 struct ddp_buffer db[2];
171 TAILQ_HEAD(, pageset) ddp_cached_pagesets;
172 TAILQ_HEAD(, kaiocb) ddp_aiojobq;
173 u_int ddp_waiting_count;
174 u_int ddp_active_count;
175 u_int ddp_cached_count;
176 int ddp_active_id; /* the currently active DDP buffer */
177 struct task ddp_requeue_task;
178 struct kaiocb *ddp_queueing;
181 TAILQ_HEAD(, kaiocb) aiotx_jobq;
182 struct task aiotx_task;
183 bool aiotx_task_active;
185 /* Tx software descriptor */
190 struct ofld_tx_sdesc txsd[];
193 #define DDP_LOCK(toep) mtx_lock(&(toep)->ddp_lock)
194 #define DDP_UNLOCK(toep) mtx_unlock(&(toep)->ddp_lock)
195 #define DDP_ASSERT_LOCKED(toep) mtx_assert(&(toep)->ddp_lock, MA_OWNED)
197 struct flowc_tx_params {
200 unsigned int snd_space;
204 #define DDP_RETRY_WAIT 5 /* seconds to wait before re-enabling DDP */
205 #define DDP_LOW_SCORE 1
206 #define DDP_HIGH_SCORE 3
209 * Compressed state for embryonic connections for a listener. Barely fits in
210 * 64B, try not to grow it further.
213 TAILQ_ENTRY(synq_entry) link; /* listen_ctx's synq link */
214 int flags; /* same as toepcb's tp_flags */
216 struct listen_ctx *lctx; /* backpointer to listen ctx */
220 volatile uintptr_t wr;
221 volatile u_int refcnt;
223 uint16_t rcv_bufsize;
226 /* listen_ctx flags */
227 #define LCTX_RPL_PENDING 1 /* waiting for a CPL_PASS_OPEN_RPL */
230 LIST_ENTRY(listen_ctx) link; /* listen hash linkage */
231 volatile int refcount;
233 struct stid_region stid_region;
235 struct inpcb *inp; /* listening socket's inp */
237 struct sge_wrq *ctrlq;
238 struct sge_ofld_rxq *ofld_rxq;
239 struct clip_entry *ce;
240 TAILQ_HEAD(, synq_entry) synq;
244 TAILQ_ENTRY(clip_entry) link;
245 struct in6_addr lip; /* local IPv6 address */
249 TAILQ_HEAD(clip_head, clip_entry);
253 /* toepcb's associated with this TOE device */
254 struct mtx toep_list_lock;
255 TAILQ_HEAD(, toepcb) toep_list;
257 struct mtx lctx_hash_lock;
258 LIST_HEAD(, listen_ctx) *listen_hash;
260 int lctx_count; /* # of lctx in the hash table */
262 struct ppod_region pr;
264 struct mtx clip_table_lock;
265 struct clip_head clip_table;
268 /* WRs that will not be sent to the chip because L2 resolution failed */
269 struct mtx unsent_wr_lock;
270 STAILQ_HEAD(, wrqe) unsent_wr_list;
271 struct task reclaim_wr_resources;
274 static inline struct tom_data *
275 tod_td(struct toedev *tod)
278 return (__containerof(tod, struct tom_data, tod));
281 static inline struct adapter *
282 td_adapter(struct tom_data *td)
285 return (td->tod.tod_softc);
289 set_mbuf_ulp_submode(struct mbuf *m, uint8_t ulp_submode)
293 m->m_pkthdr.PH_per.eight[0] = ulp_submode;
296 static inline uint8_t
297 mbuf_ulp_submode(struct mbuf *m)
301 return (m->m_pkthdr.PH_per.eight[0]);
305 struct toepcb *alloc_toepcb(struct vi_info *, int, int, int);
306 struct toepcb *hold_toepcb(struct toepcb *);
307 void free_toepcb(struct toepcb *);
308 void offload_socket(struct socket *, struct toepcb *);
309 void undo_offload_socket(struct socket *);
310 void final_cpl_received(struct toepcb *);
311 void insert_tid(struct adapter *, int, void *, int);
312 void *lookup_tid(struct adapter *, int);
313 void update_tid(struct adapter *, int, void *);
314 void remove_tid(struct adapter *, int, int);
315 void release_tid(struct adapter *, int, struct sge_wrq *);
316 int find_best_mtu_idx(struct adapter *, struct in_conninfo *, int);
317 u_long select_rcv_wnd(struct socket *);
318 int select_rcv_wscale(void);
319 uint64_t calc_opt0(struct socket *, struct vi_info *, struct l2t_entry *,
321 uint64_t select_ntuple(struct vi_info *, struct l2t_entry *);
322 void set_tcpddp_ulp_mode(struct toepcb *);
323 int negative_advice(int);
324 struct clip_entry *hold_lip(struct tom_data *, struct in6_addr *);
325 void release_lip(struct tom_data *, struct clip_entry *);
328 void t4_init_connect_cpl_handlers(void);
329 int t4_connect(struct toedev *, struct socket *, struct rtentry *,
331 void act_open_failure_cleanup(struct adapter *, u_int, u_int);
334 void t4_init_listen_cpl_handlers(void);
335 int t4_listen_start(struct toedev *, struct tcpcb *);
336 int t4_listen_stop(struct toedev *, struct tcpcb *);
337 void t4_syncache_added(struct toedev *, void *);
338 void t4_syncache_removed(struct toedev *, void *);
339 int t4_syncache_respond(struct toedev *, void *, struct mbuf *);
340 int do_abort_req_synqe(struct sge_iq *, const struct rss_header *,
342 int do_abort_rpl_synqe(struct sge_iq *, const struct rss_header *,
344 void t4_offload_socket(struct toedev *, void *, struct socket *);
347 void aiotx_init_toep(struct toepcb *);
348 int t4_aio_queue_aiotx(struct socket *, struct kaiocb *);
349 void t4_init_cpl_io_handlers(void);
350 void t4_uninit_cpl_io_handlers(void);
351 void send_abort_rpl(struct adapter *, struct sge_wrq *, int , int);
352 void send_flowc_wr(struct toepcb *, struct flowc_tx_params *);
353 void send_reset(struct adapter *, struct toepcb *, uint32_t);
354 void make_established(struct toepcb *, uint32_t, uint32_t, uint16_t);
355 void t4_rcvd(struct toedev *, struct tcpcb *);
356 void t4_rcvd_locked(struct toedev *, struct tcpcb *);
357 int t4_tod_output(struct toedev *, struct tcpcb *);
358 int t4_send_fin(struct toedev *, struct tcpcb *);
359 int t4_send_rst(struct toedev *, struct tcpcb *);
360 void t4_set_tcb_field(struct adapter *, struct sge_wrq *, int, uint16_t,
361 uint64_t, uint64_t, int, int, int);
362 void t4_push_frames(struct adapter *sc, struct toepcb *toep, int drop);
363 void t4_push_pdus(struct adapter *sc, struct toepcb *toep, int drop);
364 int do_set_tcb_rpl(struct sge_iq *, const struct rss_header *, struct mbuf *);
367 int t4_init_ppod_region(struct ppod_region *, struct t4_range *, u_int,
369 void t4_free_ppod_region(struct ppod_region *);
370 int t4_alloc_page_pods_for_ps(struct ppod_region *, struct pageset *);
371 int t4_alloc_page_pods_for_buf(struct ppod_region *, vm_offset_t, int,
372 struct ppod_reservation *);
373 int t4_write_page_pods_for_ps(struct adapter *, struct sge_wrq *, int,
375 int t4_write_page_pods_for_buf(struct adapter *, struct sge_wrq *, int tid,
376 struct ppod_reservation *, vm_offset_t, int);
377 void t4_free_page_pods(struct ppod_reservation *);
378 int t4_soreceive_ddp(struct socket *, struct sockaddr **, struct uio *,
379 struct mbuf **, struct mbuf **, int *);
380 int t4_aio_queue_ddp(struct socket *, struct kaiocb *);
381 int t4_ddp_mod_load(void);
382 void t4_ddp_mod_unload(void);
383 void ddp_assert_empty(struct toepcb *);
384 void ddp_init_toep(struct toepcb *);
385 void ddp_uninit_toep(struct toepcb *);
386 void ddp_queue_toep(struct toepcb *);
387 void release_ddp_resources(struct toepcb *toep);
388 void handle_ddp_close(struct toepcb *, struct tcpcb *, uint32_t);
389 void handle_ddp_indicate(struct toepcb *);
390 void handle_ddp_tcb_rpl(struct toepcb *, const struct cpl_set_tcb_rpl *);
391 void insert_ddp_data(struct toepcb *, uint32_t);