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
36 * Inline version of mbufq for use on 10.x. Borrowed from
37 * sys/cam/ctl/ctl_ha.c.
44 #define LISTEN_HASH_SIZE 32
47 * Min receive window. We want it to be large enough to accommodate receive
48 * coalescing, handle jumbo frames, and not trigger sender SWS avoidance.
50 #define MIN_RCV_WND (24 * 1024U)
53 * Max receive window supported by HW in bytes. Only a small part of it can
54 * be set through option0, the rest needs to be set through RX_DATA_ACK.
56 #define MAX_RCV_WND ((1U << 27) - 1)
58 #define DDP_RSVD_WIN (16 * 1024U)
59 #define SB_DDP_INDICATE SB_IN_TOE /* soreceive must respond to indicate */
61 #define USE_DDP_RX_FLOW_CONTROL
63 #define PPOD_SZ(n) ((n) * sizeof(struct pagepod))
64 #define PPOD_SIZE (PPOD_SZ(1))
68 TPF_ATTACHED = (1 << 0), /* a tcpcb refers to this toepcb */
69 TPF_FLOWC_WR_SENT = (1 << 1), /* firmware flow context WR sent */
70 TPF_TX_DATA_SENT = (1 << 2), /* some data sent */
71 TPF_TX_SUSPENDED = (1 << 3), /* tx suspended for lack of resources */
72 TPF_SEND_FIN = (1 << 4), /* send FIN after all pending data */
73 TPF_FIN_SENT = (1 << 5), /* FIN has been sent */
74 TPF_ABORT_SHUTDOWN = (1 << 6), /* connection abort is in progress */
75 TPF_CPL_PENDING = (1 << 7), /* haven't received the last CPL */
76 TPF_SYNQE = (1 << 8), /* synq_entry, not really a toepcb */
77 TPF_SYNQE_NEEDFREE = (1 << 9), /* synq_entry was malloc'd separately */
78 TPF_SYNQE_TCPDDP = (1 << 10), /* ulp_mode TCPDDP in toepcb */
79 TPF_SYNQE_EXPANDED = (1 << 11), /* toepcb ready, tid context updated */
80 TPF_SYNQE_HAS_L2TE = (1 << 12), /* we've replied to PASS_ACCEPT_REQ */
84 DDP_OK = (1 << 0), /* OK to turn on DDP */
85 DDP_SC_REQ = (1 << 1), /* state change (on/off) requested */
86 DDP_ON = (1 << 2), /* DDP is turned on */
87 DDP_BUF0_ACTIVE = (1 << 3), /* buffer 0 in use (not invalidated) */
88 DDP_BUF1_ACTIVE = (1 << 4), /* buffer 1 in use (not invalidated) */
91 struct ofld_tx_sdesc {
92 uint32_t plen; /* payload length */
93 uint8_t tx_credits; /* firmware tx credits (unit is 16B) */
99 u_int pr_page_shift[4];
100 uint32_t pr_tag_mask; /* hardware tagmask for this region. */
101 uint32_t pr_invalid_bit; /* OR with this to invalidate tag. */
102 uint32_t pr_alias_mask; /* AND with tag to get alias bits. */
103 u_int pr_alias_shift; /* shift this much for first alias bit. */
107 struct ppod_reservation {
108 struct ppod_region *prsv_pr;
109 uint32_t prsv_tag; /* Full tag: pgsz, alias, tag, color */
118 struct ppod_reservation prsv;
122 TAILQ_ENTRY(toepcb) link; /* toep_list */
123 u_int flags; /* miscellaneous flags */
125 struct inpcb *inp; /* backpointer to host stack's PCB */
126 struct vi_info *vi; /* virtual interface */
127 struct sge_wrq *ofld_txq;
128 struct sge_ofld_rxq *ofld_rxq;
129 struct sge_wrq *ctrlq;
130 struct l2t_entry *l2te; /* L2 table entry used by this connection */
131 struct clip_entry *ce; /* CLIP table entry used by this tid */
132 int tid; /* Connection identifier */
134 /* tx credit handling */
135 u_int tx_total; /* total tx WR credits (in 16B units) */
136 u_int tx_credits; /* tx WR credits (in 16B units) available */
137 u_int tx_nocompl; /* tx WR credits since last compl request */
138 u_int plen_nocompl; /* payload since last compl request */
140 /* rx credit handling */
141 u_int sb_cc; /* last noted value of so_rcv->sb_cc */
142 int rx_credits; /* rx credits (in bytes) to be returned to hw */
144 u_int ulp_mode; /* ULP mode */
147 struct mbufq ulp_pduq; /* PDUs waiting to be sent out. */
148 struct mbufq ulp_pdu_reclaimq;
151 struct ddp_buffer *db[2];
155 /* Tx software descriptor */
160 struct ofld_tx_sdesc txsd[];
163 struct flowc_tx_params {
166 unsigned int snd_space;
170 #define DDP_RETRY_WAIT 5 /* seconds to wait before re-enabling DDP */
171 #define DDP_LOW_SCORE 1
172 #define DDP_HIGH_SCORE 3
175 * Compressed state for embryonic connections for a listener. Barely fits in
176 * 64B, try not to grow it further.
179 TAILQ_ENTRY(synq_entry) link; /* listen_ctx's synq link */
180 int flags; /* same as toepcb's tp_flags */
182 struct listen_ctx *lctx; /* backpointer to listen ctx */
186 volatile uintptr_t wr;
187 volatile u_int refcnt;
189 uint16_t rcv_bufsize;
192 /* listen_ctx flags */
193 #define LCTX_RPL_PENDING 1 /* waiting for a CPL_PASS_OPEN_RPL */
196 LIST_ENTRY(listen_ctx) link; /* listen hash linkage */
197 volatile int refcount;
199 struct stid_region stid_region;
201 struct inpcb *inp; /* listening socket's inp */
202 struct sge_wrq *ctrlq;
203 struct sge_ofld_rxq *ofld_rxq;
204 struct clip_entry *ce;
205 TAILQ_HEAD(, synq_entry) synq;
209 TAILQ_ENTRY(clip_entry) link;
210 struct in6_addr lip; /* local IPv6 address */
214 TAILQ_HEAD(clip_head, clip_entry);
218 /* toepcb's associated with this TOE device */
219 struct mtx toep_list_lock;
220 TAILQ_HEAD(, toepcb) toep_list;
222 struct mtx lctx_hash_lock;
223 LIST_HEAD(, listen_ctx) *listen_hash;
225 int lctx_count; /* # of lctx in the hash table */
227 struct ppod_region pr;
229 struct mtx clip_table_lock;
230 struct clip_head clip_table;
233 /* WRs that will not be sent to the chip because L2 resolution failed */
234 struct mtx unsent_wr_lock;
235 STAILQ_HEAD(, wrqe) unsent_wr_list;
236 struct task reclaim_wr_resources;
239 static inline struct tom_data *
240 tod_td(struct toedev *tod)
243 return (__containerof(tod, struct tom_data, tod));
246 static inline struct adapter *
247 td_adapter(struct tom_data *td)
250 return (td->tod.tod_softc);
254 * XXX: Don't define these for the iWARP driver on 10 due to differences
257 #ifndef _LINUX_TYPES_H_
259 set_mbuf_ulp_submode(struct mbuf *m, uint8_t ulp_submode)
263 m->m_pkthdr.PH_per.eigth[0] = ulp_submode;
266 static inline uint8_t
267 mbuf_ulp_submode(struct mbuf *m)
271 return (m->m_pkthdr.PH_per.eigth[0]);
276 struct toepcb *alloc_toepcb(struct vi_info *, int, int, int);
277 void free_toepcb(struct toepcb *);
278 void offload_socket(struct socket *, struct toepcb *);
279 void undo_offload_socket(struct socket *);
280 void final_cpl_received(struct toepcb *);
281 void insert_tid(struct adapter *, int, void *);
282 void *lookup_tid(struct adapter *, int);
283 void update_tid(struct adapter *, int, void *);
284 void remove_tid(struct adapter *, int);
285 void release_tid(struct adapter *, int, struct sge_wrq *);
286 int find_best_mtu_idx(struct adapter *, struct in_conninfo *, int);
287 u_long select_rcv_wnd(struct socket *);
288 int select_rcv_wscale(void);
289 uint64_t calc_opt0(struct socket *, struct vi_info *, struct l2t_entry *,
291 uint64_t select_ntuple(struct vi_info *, struct l2t_entry *);
292 void set_tcpddp_ulp_mode(struct toepcb *);
293 int negative_advice(int);
294 struct clip_entry *hold_lip(struct tom_data *, struct in6_addr *);
295 void release_lip(struct tom_data *, struct clip_entry *);
298 void t4_init_connect_cpl_handlers(void);
299 int t4_connect(struct toedev *, struct socket *, struct rtentry *,
301 void act_open_failure_cleanup(struct adapter *, u_int, u_int);
304 void t4_init_listen_cpl_handlers(void);
305 int t4_listen_start(struct toedev *, struct tcpcb *);
306 int t4_listen_stop(struct toedev *, struct tcpcb *);
307 void t4_syncache_added(struct toedev *, void *);
308 void t4_syncache_removed(struct toedev *, void *);
309 int t4_syncache_respond(struct toedev *, void *, struct mbuf *);
310 int do_abort_req_synqe(struct sge_iq *, const struct rss_header *,
312 int do_abort_rpl_synqe(struct sge_iq *, const struct rss_header *,
314 void t4_offload_socket(struct toedev *, void *, struct socket *);
317 void t4_init_cpl_io_handlers(void);
318 void t4_uninit_cpl_io_handlers(void);
319 void send_abort_rpl(struct adapter *, struct sge_wrq *, int , int);
320 void send_flowc_wr(struct toepcb *, struct flowc_tx_params *);
321 void send_reset(struct adapter *, struct toepcb *, uint32_t);
322 void make_established(struct toepcb *, uint32_t, uint32_t, uint16_t);
323 void t4_rcvd(struct toedev *, struct tcpcb *);
324 int t4_tod_output(struct toedev *, struct tcpcb *);
325 int t4_send_fin(struct toedev *, struct tcpcb *);
326 int t4_send_rst(struct toedev *, struct tcpcb *);
327 void t4_set_tcb_field(struct adapter *, struct sge_wrq *, int, uint16_t,
328 uint64_t, uint64_t, int, int, int);
329 void t4_push_frames(struct adapter *sc, struct toepcb *toep, int drop);
330 void t4_push_pdus(struct adapter *sc, struct toepcb *toep, int drop);
331 int do_set_tcb_rpl(struct sge_iq *, const struct rss_header *, struct mbuf *);
334 int t4_init_ppod_region(struct ppod_region *, struct t4_range *, u_int,
336 void t4_free_ppod_region(struct ppod_region *);
337 int t4_alloc_page_pods_for_db(struct ppod_region *, struct ddp_buffer *);
338 int t4_alloc_page_pods_for_buf(struct ppod_region *, vm_offset_t, int,
339 struct ppod_reservation *);
340 int t4_write_page_pods_for_db(struct adapter *, struct sge_wrq *, int,
341 struct ddp_buffer *);
342 int t4_write_page_pods_for_buf(struct adapter *, struct sge_wrq *, int tid,
343 struct ppod_reservation *, vm_offset_t, int);
344 void t4_free_page_pods(struct ppod_reservation *);
345 int t4_soreceive_ddp(struct socket *, struct sockaddr **, struct uio *,
346 struct mbuf **, struct mbuf **, int *);
347 int t4_ddp_mod_load(void);
348 void t4_ddp_mod_unload(void);
349 void enable_ddp(struct adapter *, struct toepcb *toep);
350 void release_ddp_resources(struct toepcb *toep);
351 void handle_ddp_close(struct toepcb *, struct tcpcb *, struct sockbuf *,
353 void insert_ddp_data(struct toepcb *, uint32_t);