xref: /freebsd/sys/dev/cxgbe/tom/t4_tom.h (revision f48fb131c2523d4915d1ad4eba002251c64f5574)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2012, 2015 Chelsio Communications, Inc.
5  * All rights reserved.
6  * Written by: Navdeep Parhar <np@FreeBSD.org>
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  */
30 
31 #ifndef __T4_TOM_H__
32 #define __T4_TOM_H__
33 #include <sys/vmem.h>
34 #include "common/t4_hw.h"
35 #include "common/t4_msg.h"
36 #include "tom/t4_tls.h"
37 
38 #define LISTEN_HASH_SIZE 32
39 
40 /*
41  * Min receive window.  We want it to be large enough to accommodate receive
42  * coalescing, handle jumbo frames, and not trigger sender SWS avoidance.
43  */
44 #define MIN_RCV_WND (24 * 1024U)
45 
46 /*
47  * Max receive window supported by HW in bytes.  Only a small part of it can
48  * be set through option0, the rest needs to be set through RX_DATA_ACK.
49  */
50 #define MAX_RCV_WND ((1U << 27) - 1)
51 
52 #define	DDP_RSVD_WIN (16 * 1024U)
53 #define	SB_DDP_INDICATE	SB_IN_TOE	/* soreceive must respond to indicate */
54 
55 #define USE_DDP_RX_FLOW_CONTROL
56 
57 #define PPOD_SZ(n)	((n) * sizeof(struct pagepod))
58 #define PPOD_SIZE	(PPOD_SZ(1))
59 
60 /* TOE PCB flags */
61 enum {
62 	TPF_ATTACHED	   = (1 << 0),	/* a tcpcb refers to this toepcb */
63 	TPF_FLOWC_WR_SENT  = (1 << 1),	/* firmware flow context WR sent */
64 	TPF_TX_DATA_SENT   = (1 << 2),	/* some data sent */
65 	TPF_TX_SUSPENDED   = (1 << 3),	/* tx suspended for lack of resources */
66 	TPF_SEND_FIN	   = (1 << 4),	/* send FIN after all pending data */
67 	TPF_FIN_SENT	   = (1 << 5),	/* FIN has been sent */
68 	TPF_ABORT_SHUTDOWN = (1 << 6),	/* connection abort is in progress */
69 	TPF_CPL_PENDING    = (1 << 7),	/* haven't received the last CPL */
70 	TPF_SYNQE	   = (1 << 8),	/* synq_entry, not really a toepcb */
71 	TPF_SYNQE_EXPANDED = (1 << 9),	/* toepcb ready, tid context updated */
72 	TPF_TLS_STARTING   = (1 << 10), /* starting TLS receive */
73 	TPF_KTLS           = (1 << 11), /* send TLS records from KTLS */
74 	TPF_INITIALIZED    = (1 << 12), /* init_toepcb has been called */
75 	TPF_TLS_RECEIVE	   = (1 << 13), /* should receive TLS records */
76 	TPF_TLS_RX_QUIESCING = (1 << 14), /* RX quiesced for TLS RX startup */
77 	TPF_TLS_RX_QUIESCED = (1 << 15), /* RX quiesced for TLS RX startup */
78 	TPF_WAITING_FOR_FINAL = (1<< 16), /* waiting for wakeup on final CPL */
79 	TPF_IN_TOEP_LIST   = (1 << 17),	/* toep is in the main td->toep_list */
80 };
81 
82 enum {
83 	DDP_OK		= (1 << 0),	/* OK to turn on DDP */
84 	DDP_SC_REQ	= (1 << 1),	/* state change (on/off) requested */
85 	DDP_ON		= (1 << 2),	/* DDP is turned on */
86 	DDP_BUF0_ACTIVE	= (1 << 3),	/* buffer 0 in use (not invalidated) */
87 	DDP_BUF1_ACTIVE	= (1 << 4),	/* buffer 1 in use (not invalidated) */
88 	DDP_TASK_ACTIVE = (1 << 5),	/* requeue task is queued / running */
89 	DDP_DEAD	= (1 << 6),	/* toepcb is shutting down */
90 	DDP_AIO		= (1 << 7),	/* DDP used for AIO, not so_rcv */
91 	DDP_RCVBUF	= (1 << 8),	/* DDP used for so_rcv, not AIO */
92 };
93 
94 struct bio;
95 struct ctl_sg_entry;
96 struct sockopt;
97 struct offload_settings;
98 
99 /*
100  * Connection parameters for an offloaded connection.  These are mostly (but not
101  * all) hardware TOE parameters.
102  */
103 struct conn_params {
104 	int8_t rx_coalesce;
105 	int8_t cong_algo;
106 	int8_t tc_idx;
107 	int8_t tstamp;
108 	int8_t sack;
109 	int8_t nagle;
110 	int8_t keepalive;
111 	int8_t wscale;
112 	int8_t ecn;
113 	int8_t mtu_idx;
114 	int8_t ulp_mode;
115 	int8_t tx_align;
116 	int16_t txq_idx;	/* ofld_txq = &sc->sge.ofld_txq[txq_idx] */
117 	int16_t rxq_idx;	/* ofld_rxq = &sc->sge.ofld_rxq[rxq_idx] */
118 	int16_t l2t_idx;
119 	uint16_t emss;
120 	uint16_t opt0_bufsize;
121 	u_int sndbuf;		/* controls TP tx pages */
122 };
123 
124 struct ofld_tx_sdesc {
125 	uint32_t plen;		/* payload length */
126 	uint8_t tx_credits;	/* firmware tx credits (unit is 16B) */
127 };
128 
129 struct ppod_region {
130 	u_int pr_start;
131 	u_int pr_len;
132 	u_int pr_page_shift[4];
133 	uint32_t pr_tag_mask;		/* hardware tagmask for this region. */
134 	uint32_t pr_invalid_bit;	/* OR with this to invalidate tag. */
135 	uint32_t pr_alias_mask;		/* AND with tag to get alias bits. */
136 	u_int pr_alias_shift;		/* shift this much for first alias bit. */
137 	vmem_t *pr_arena;
138 };
139 
140 struct ppod_reservation {
141 	struct ppod_region *prsv_pr;
142 	uint32_t prsv_tag;		/* Full tag: pgsz, alias, tag, color */
143 	u_int prsv_nppods;
144 };
145 
146 struct pageset {
147 	TAILQ_ENTRY(pageset) link;
148 	vm_page_t *pages;
149 	int npages;
150 	int flags;
151 	int offset;		/* offset in first page */
152 	int len;
153 	struct ppod_reservation prsv;
154 	struct vmspace *vm;
155 	vm_offset_t start;
156 	u_int vm_timestamp;
157 };
158 
159 TAILQ_HEAD(pagesetq, pageset);
160 
161 #define	PS_PPODS_WRITTEN	0x0001	/* Page pods written to the card. */
162 
163 struct ddp_rcv_buffer {
164 	TAILQ_ENTRY(ddp_rcv_buffer) link;
165 	void	*buf;
166 	struct ppod_reservation prsv;
167 	size_t	len;
168 	u_int	refs;
169 };
170 
171 struct ddp_buffer {
172 	union {
173 		/* DDP_AIO fields */
174 		struct {
175 			struct pageset *ps;
176 			struct kaiocb *job;
177 			int	cancel_pending;
178 		};
179 
180 		/* DDP_RCVBUF fields */
181 		struct {
182 			struct ddp_rcv_buffer *drb;
183 			uint32_t placed;
184 		};
185 	};
186 };
187 
188 /*
189  * (a) - DDP_AIO only
190  * (r) - DDP_RCVBUF only
191  */
192 struct ddp_pcb {
193 	struct mtx lock;
194 	u_int flags;
195 	int active_id;	/* the currently active DDP buffer */
196 	struct ddp_buffer db[2];
197 	union {
198 		TAILQ_HEAD(, pageset) cached_pagesets;	/* (a) */
199 		TAILQ_HEAD(, ddp_rcv_buffer) cached_buffers; /* (r) */
200 	};
201 	TAILQ_HEAD(, kaiocb) aiojobq;		/* (a) */
202 	u_int waiting_count;			/* (a) */
203 	u_int active_count;
204 	u_int cached_count;
205 	struct task requeue_task;
206 	struct kaiocb *queueing;		/* (a) */
207 	struct mtx cache_lock;			/* (r) */
208 };
209 
210 struct toepcb {
211 	struct tom_data *td;
212 	struct inpcb *inp;	/* backpointer to host stack's PCB */
213 	u_int flags;		/* miscellaneous flags */
214 	TAILQ_ENTRY(toepcb) link; /* toep_list or stranded_toep_list */
215 	int refcount;
216 	struct vnet *vnet;
217 	struct vi_info *vi;	/* virtual interface */
218 	struct sge_ofld_txq *ofld_txq;
219 	struct sge_ofld_rxq *ofld_rxq;
220 	struct sge_wrq *ctrlq;
221 	struct l2t_entry *l2te;	/* L2 table entry used by this connection */
222 	struct clip_entry *ce;	/* CLIP table entry used by this tid */
223 	int tid;		/* Connection identifier */
224 	int incarnation;	/* sc->incarnation when toepcb was allocated */
225 
226 	/* tx credit handling */
227 	u_int tx_total;		/* total tx WR credits (in 16B units) */
228 	u_int tx_credits;	/* tx WR credits (in 16B units) available */
229 	u_int tx_nocompl;	/* tx WR credits since last compl request */
230 	u_int plen_nocompl;	/* payload since last compl request */
231 
232 	struct conn_params params;
233 
234 	void *ulpcb;
235 	void *ulpcb2;
236 	struct mbufq ulp_pduq;	/* PDUs waiting to be sent out. */
237 	struct mbufq ulp_pdu_reclaimq;
238 
239 	struct ddp_pcb ddp;
240 	struct tls_ofld_info tls;
241 
242 	TAILQ_HEAD(, kaiocb) aiotx_jobq;
243 	struct task aiotx_task;
244 	struct socket *aiotx_so;
245 
246 	/* Tx software descriptor */
247 	uint8_t txsd_total;
248 	uint8_t txsd_pidx;
249 	uint8_t txsd_cidx;
250 	uint8_t txsd_avail;
251 	struct ofld_tx_sdesc txsd[];
252 };
253 
254 static inline int
ulp_mode(struct toepcb * toep)255 ulp_mode(struct toepcb *toep)
256 {
257 
258 	return (toep->params.ulp_mode);
259 }
260 
261 #define	DDP_LOCK(toep)		mtx_lock(&(toep)->ddp.lock)
262 #define	DDP_UNLOCK(toep)	mtx_unlock(&(toep)->ddp.lock)
263 #define	DDP_ASSERT_LOCKED(toep)	mtx_assert(&(toep)->ddp.lock, MA_OWNED)
264 #define	DDP_CACHE_LOCK(toep)	mtx_lock(&(toep)->ddp.cache_lock)
265 #define	DDP_CACHE_UNLOCK(toep)	mtx_unlock(&(toep)->ddp.cache_lock)
266 
267 /*
268  * Compressed state for embryonic connections for a listener.
269  */
270 struct synq_entry {
271 	struct listen_ctx *lctx;	/* backpointer to listen ctx */
272 	struct mbuf *syn;
273 	int flags;			/* same as toepcb's tp_flags */
274 	TAILQ_ENTRY(synq_entry) link;	/* synqe_list */
275 	volatile int ok_to_respond;
276 	volatile u_int refcnt;
277 	int tid;
278 	uint32_t iss;
279 	uint32_t irs;
280 	uint32_t ts;
281 	uint32_t rss_hash;
282 	__be16 tcp_opt; /* from cpl_pass_establish */
283 	int incarnation;
284 	struct toepcb *toep;
285 
286 	struct conn_params params;
287 };
288 
289 /* listen_ctx flags */
290 #define LCTX_RPL_PENDING 1	/* waiting for a CPL_PASS_OPEN_RPL */
291 #define LCTX_SETUP_IN_HW 2	/* stid entry is setup in hardware */
292 
293 struct listen_ctx {
294 	LIST_ENTRY(listen_ctx) link;	/* listen hash linkage */
295 	volatile int refcount;
296 	int stid;
297 	int flags;
298 	bool isipv6;
299 	struct inpcb *inp;		/* listening socket's inp */
300 	struct vnet *vnet;
301 	struct sge_wrq *ctrlq;
302 	struct sge_ofld_rxq *ofld_rxq;
303 	struct clip_entry *ce;
304 };
305 
306 /* tcb_histent flags */
307 #define TE_RPL_PENDING	1
308 #define TE_ACTIVE	2
309 
310 /* bits in one 8b tcb_histent sample. */
311 #define TS_RTO			(1 << 0)
312 #define TS_DUPACKS		(1 << 1)
313 #define TS_FASTREXMT		(1 << 2)
314 #define TS_SND_BACKLOGGED	(1 << 3)
315 #define TS_CWND_LIMITED		(1 << 4)
316 #define TS_ECN_ECE		(1 << 5)
317 #define TS_ECN_CWR		(1 << 6)
318 #define TS_RESERVED		(1 << 7)	/* Unused. */
319 
320 struct tcb_histent {
321 	struct mtx te_lock;
322 	struct callout te_callout;
323 	uint64_t te_tcb[TCB_SIZE / sizeof(uint64_t)];
324 	struct adapter *te_adapter;
325 	u_int te_flags;
326 	u_int te_tid;
327 	uint8_t te_pidx;
328 	uint8_t te_sample[100];
329 };
330 
331 struct tom_data {
332 	struct toedev tod;
333 
334 	/* toepcb's associated with this TOE device */
335 	struct mtx toep_list_lock;
336 	TAILQ_HEAD(, toepcb) toep_list;
337 	TAILQ_HEAD(, synq_entry) synqe_list;
338 	/* List of tids left stranded because hw stopped abruptly. */
339 	TAILQ_HEAD(, toepcb) stranded_atids;
340 	TAILQ_HEAD(, toepcb) stranded_tids;
341 	TAILQ_HEAD(, synq_entry) stranded_synqe;
342 	struct task cleanup_stranded_tids;
343 
344 	struct mtx lctx_hash_lock;
345 	LIST_HEAD(, listen_ctx) *listen_hash;
346 	u_long listen_mask;
347 	int lctx_count;		/* # of lctx in the hash table */
348 
349 	struct ppod_region pr;
350 
351 	struct rwlock tcb_history_lock __aligned(CACHE_LINE_SIZE);
352 	struct tcb_histent **tcb_history;
353 	int dupack_threshold;
354 
355 	/* WRs that will not be sent to the chip because L2 resolution failed */
356 	struct mtx unsent_wr_lock;
357 	STAILQ_HEAD(, wrqe) unsent_wr_list;
358 	struct task reclaim_wr_resources;
359 };
360 
361 static inline struct tom_data *
tod_td(struct toedev * tod)362 tod_td(struct toedev *tod)
363 {
364 
365 	return (__containerof(tod, struct tom_data, tod));
366 }
367 
368 static inline struct adapter *
td_adapter(struct tom_data * td)369 td_adapter(struct tom_data *td)
370 {
371 
372 	return (td->tod.tod_softc);
373 }
374 
375 static inline void
set_mbuf_raw_wr(struct mbuf * m,bool raw)376 set_mbuf_raw_wr(struct mbuf *m, bool raw)
377 {
378 
379 	M_ASSERTPKTHDR(m);
380 	m->m_pkthdr.PH_per.eight[6] = raw;
381 }
382 
383 static inline bool
mbuf_raw_wr(struct mbuf * m)384 mbuf_raw_wr(struct mbuf *m)
385 {
386 
387 	M_ASSERTPKTHDR(m);
388 	return (m->m_pkthdr.PH_per.eight[6]);
389 }
390 
391 static inline void
set_mbuf_ulp_submode(struct mbuf * m,uint8_t ulp_submode)392 set_mbuf_ulp_submode(struct mbuf *m, uint8_t ulp_submode)
393 {
394 
395 	M_ASSERTPKTHDR(m);
396 	m->m_pkthdr.PH_per.eight[0] = ulp_submode;
397 }
398 
399 static inline uint8_t
mbuf_ulp_submode(struct mbuf * m)400 mbuf_ulp_submode(struct mbuf *m)
401 {
402 
403 	M_ASSERTPKTHDR(m);
404 	return (m->m_pkthdr.PH_per.eight[0]);
405 }
406 
407 static inline void
set_mbuf_iscsi_iso(struct mbuf * m,bool iso)408 set_mbuf_iscsi_iso(struct mbuf *m, bool iso)
409 {
410 
411 	M_ASSERTPKTHDR(m);
412 	m->m_pkthdr.PH_per.eight[1] = iso;
413 }
414 
415 static inline bool
mbuf_iscsi_iso(struct mbuf * m)416 mbuf_iscsi_iso(struct mbuf *m)
417 {
418 
419 	M_ASSERTPKTHDR(m);
420 	return (m->m_pkthdr.PH_per.eight[1]);
421 }
422 
423 /* Flags for iSCSI segmentation offload. */
424 #define	CXGBE_ISO_TYPE(flags)	((flags) & 0x3)
425 #define	CXGBE_ISO_F		0x4
426 
427 static inline void
set_mbuf_iscsi_iso_flags(struct mbuf * m,uint8_t flags)428 set_mbuf_iscsi_iso_flags(struct mbuf *m, uint8_t flags)
429 {
430 
431 	M_ASSERTPKTHDR(m);
432 	m->m_pkthdr.PH_per.eight[2] = flags;
433 }
434 
435 static inline uint8_t
mbuf_iscsi_iso_flags(struct mbuf * m)436 mbuf_iscsi_iso_flags(struct mbuf *m)
437 {
438 
439 	M_ASSERTPKTHDR(m);
440 	return (m->m_pkthdr.PH_per.eight[2]);
441 }
442 
443 static inline void
set_mbuf_iscsi_iso_mss(struct mbuf * m,uint16_t mss)444 set_mbuf_iscsi_iso_mss(struct mbuf *m, uint16_t mss)
445 {
446 
447 	M_ASSERTPKTHDR(m);
448 	m->m_pkthdr.PH_per.sixteen[2] = mss;
449 }
450 
451 static inline uint16_t
mbuf_iscsi_iso_mss(struct mbuf * m)452 mbuf_iscsi_iso_mss(struct mbuf *m)
453 {
454 
455 	M_ASSERTPKTHDR(m);
456 	return (m->m_pkthdr.PH_per.sixteen[2]);
457 }
458 
459 /* t4_tom.c */
460 struct toepcb *alloc_toepcb(struct vi_info *, int);
461 int init_toepcb(struct vi_info *, struct toepcb *);
462 struct toepcb *hold_toepcb(struct toepcb *);
463 void free_toepcb(struct toepcb *);
464 void offload_socket(struct socket *, struct toepcb *);
465 void restore_so_proto(struct socket *, bool);
466 void undo_offload_socket(struct socket *);
467 void final_cpl_received(struct toepcb *);
468 void insert_tid(struct adapter *, int, void *, int);
469 void *lookup_tid(struct adapter *, int);
470 void update_tid(struct adapter *, int, void *);
471 void remove_tid(struct adapter *, int, int);
472 u_long select_rcv_wnd(struct socket *);
473 int select_rcv_wscale(void);
474 void init_conn_params(struct vi_info *, struct offload_settings *,
475     struct in_conninfo *, struct socket *, const struct tcp_options *, int16_t,
476     struct conn_params *cp);
477 __be64 calc_options0(struct vi_info *, struct conn_params *);
478 __be32 calc_options2(struct vi_info *, struct conn_params *);
479 uint64_t select_ntuple(struct vi_info *, struct l2t_entry *);
480 int negative_advice(int);
481 int add_tid_to_history(struct adapter *, u_int);
482 void t4_pcb_detach(struct toedev *, struct tcpcb *);
483 
484 /* t4_connect.c */
485 void t4_init_connect_cpl_handlers(void);
486 void t4_uninit_connect_cpl_handlers(void);
487 int t4_connect(struct toedev *, struct socket *, struct nhop_object *,
488     struct sockaddr *);
489 void act_open_failure_cleanup(struct adapter *, struct toepcb *, u_int);
490 
491 /* t4_listen.c */
492 void t4_init_listen_cpl_handlers(void);
493 void t4_uninit_listen_cpl_handlers(void);
494 int t4_listen_start(struct toedev *, struct tcpcb *);
495 int t4_listen_stop(struct toedev *, struct tcpcb *);
496 void t4_syncache_added(struct toedev *, void *);
497 void t4_syncache_removed(struct toedev *, void *);
498 int t4_syncache_respond(struct toedev *, void *, struct mbuf *);
499 int do_abort_req_synqe(struct sge_iq *, const struct rss_header *,
500     struct mbuf *);
501 int do_abort_rpl_synqe(struct sge_iq *, const struct rss_header *,
502     struct mbuf *);
503 void t4_offload_socket(struct toedev *, void *, struct socket *);
504 void synack_failure_cleanup(struct adapter *, struct synq_entry *);
505 int alloc_stid_tab(struct adapter *);
506 void free_stid_tab(struct adapter *);
507 void stop_stid_tab(struct adapter *);
508 void restart_stid_tab(struct adapter *);
509 
510 /* t4_cpl_io.c */
511 void aiotx_init_toep(struct toepcb *);
512 int t4_aio_queue_aiotx(struct socket *, struct kaiocb *);
513 void t4_init_cpl_io_handlers(void);
514 void t4_uninit_cpl_io_handlers(void);
515 void send_abort_rpl(struct adapter *, struct sge_ofld_txq *, int , int);
516 void send_flowc_wr(struct toepcb *, struct tcpcb *);
517 void send_reset(struct adapter *, struct toepcb *, uint32_t);
518 int send_rx_credits(struct adapter *, struct toepcb *, int);
519 void make_established(struct toepcb *, uint32_t, uint32_t, uint16_t);
520 int t4_close_conn(struct adapter *, struct toepcb *);
521 void t4_rcvd(struct toedev *, struct tcpcb *);
522 void t4_rcvd_locked(struct toedev *, struct tcpcb *);
523 int t4_tod_output(struct toedev *, struct tcpcb *);
524 int t4_send_fin(struct toedev *, struct tcpcb *);
525 int t4_send_rst(struct toedev *, struct tcpcb *);
526 void t4_set_tcb_field(struct adapter *, struct sge_wrq *, struct toepcb *,
527     uint16_t, uint64_t, uint64_t, int, int);
528 void t4_push_frames(struct adapter *, struct toepcb *, int);
529 void t4_push_pdus(struct adapter *, struct toepcb *, int);
530 
531 /* t4_ddp.c */
532 int t4_init_ppod_region(struct ppod_region *, struct t4_range *, u_int,
533     const char *);
534 void t4_free_ppod_region(struct ppod_region *);
535 int t4_alloc_page_pods_for_ps(struct ppod_region *, struct pageset *);
536 int t4_alloc_page_pods_for_bio(struct ppod_region *, struct bio *,
537     struct ppod_reservation *);
538 int t4_alloc_page_pods_for_buf(struct ppod_region *, vm_offset_t, int,
539     struct ppod_reservation *);
540 int t4_alloc_page_pods_for_sgl(struct ppod_region *, struct ctl_sg_entry *, int,
541     struct ppod_reservation *);
542 int t4_write_page_pods_for_ps(struct adapter *, struct sge_wrq *, int,
543     struct pageset *);
544 int t4_write_page_pods_for_bio(struct adapter *, struct toepcb *,
545     struct ppod_reservation *, struct bio *, struct mbufq *);
546 int t4_write_page_pods_for_buf(struct adapter *, struct toepcb *,
547     struct ppod_reservation *, vm_offset_t, int, struct mbufq *);
548 int t4_write_page_pods_for_sgl(struct adapter *, struct toepcb *,
549     struct ppod_reservation *, struct ctl_sg_entry *, int, int, struct mbufq *);
550 void t4_free_page_pods(struct ppod_reservation *);
551 int t4_aio_queue_ddp(struct socket *, struct kaiocb *);
552 int t4_enable_ddp_rcv(struct socket *, struct toepcb *);
553 void t4_ddp_mod_load(void);
554 void t4_ddp_mod_unload(void);
555 void ddp_assert_empty(struct toepcb *);
556 void ddp_uninit_toep(struct toepcb *);
557 void ddp_queue_toep(struct toepcb *);
558 void release_ddp_resources(struct toepcb *toep);
559 void handle_ddp_close(struct toepcb *, struct tcpcb *, uint32_t);
560 void handle_ddp_indicate(struct toepcb *);
561 void insert_ddp_data(struct toepcb *, uint32_t);
562 const struct offload_settings *lookup_offload_policy(struct adapter *, int,
563     struct mbuf *, uint16_t, struct inpcb *);
564 
565 /* t4_tls.c */
566 bool can_tls_offload(struct adapter *);
567 void do_rx_data_tls(const struct cpl_rx_data *, struct toepcb *, struct mbuf *);
568 void t4_push_ktls(struct adapter *, struct toepcb *, int);
569 void tls_received_starting_data(struct adapter *, struct toepcb *,
570     struct sockbuf *, int);
571 void t4_tls_mod_load(void);
572 void t4_tls_mod_unload(void);
573 void tls_init_toep(struct toepcb *);
574 int tls_tx_key(struct toepcb *);
575 void tls_uninit_toep(struct toepcb *);
576 int tls_alloc_ktls(struct toepcb *, struct ktls_session *, int);
577 
578 #endif
579