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
65 TPF_ATTACHED = (1 << 0), /* a tcpcb refers to this toepcb */
66 TPF_FLOWC_WR_SENT = (1 << 1), /* firmware flow context WR sent */
67 TPF_TX_DATA_SENT = (1 << 2), /* some data sent */
68 TPF_TX_SUSPENDED = (1 << 3), /* tx suspended for lack of resources */
69 TPF_SEND_FIN = (1 << 4), /* send FIN after all pending data */
70 TPF_FIN_SENT = (1 << 5), /* FIN has been sent */
71 TPF_ABORT_SHUTDOWN = (1 << 6), /* connection abort is in progress */
72 TPF_CPL_PENDING = (1 << 7), /* haven't received the last CPL */
73 TPF_SYNQE = (1 << 8), /* synq_entry, not really a toepcb */
74 TPF_SYNQE_NEEDFREE = (1 << 9), /* synq_entry was malloc'd separately */
75 TPF_SYNQE_TCPDDP = (1 << 10), /* ulp_mode TCPDDP in toepcb */
76 TPF_SYNQE_EXPANDED = (1 << 11), /* toepcb ready, tid context updated */
77 TPF_SYNQE_HAS_L2TE = (1 << 12), /* we've replied to PASS_ACCEPT_REQ */
81 DDP_OK = (1 << 0), /* OK to turn on DDP */
82 DDP_SC_REQ = (1 << 1), /* state change (on/off) requested */
83 DDP_ON = (1 << 2), /* DDP is turned on */
84 DDP_BUF0_ACTIVE = (1 << 3), /* buffer 0 in use (not invalidated) */
85 DDP_BUF1_ACTIVE = (1 << 4), /* buffer 1 in use (not invalidated) */
88 struct ofld_tx_sdesc {
89 uint32_t plen; /* payload length */
90 uint8_t tx_credits; /* firmware tx credits (unit is 16B) */
94 uint32_t tag; /* includes color, page pod addr, and DDP page size */
104 TAILQ_ENTRY(toepcb) link; /* toep_list */
105 u_int flags; /* miscellaneous flags */
107 struct inpcb *inp; /* backpointer to host stack's PCB */
108 struct vi_info *vi; /* virtual interface */
109 struct sge_wrq *ofld_txq;
110 struct sge_ofld_rxq *ofld_rxq;
111 struct sge_wrq *ctrlq;
112 struct l2t_entry *l2te; /* L2 table entry used by this connection */
113 struct clip_entry *ce; /* CLIP table entry used by this tid */
114 int tid; /* Connection identifier */
116 /* tx credit handling */
117 u_int tx_total; /* total tx WR credits (in 16B units) */
118 u_int tx_credits; /* tx WR credits (in 16B units) available */
119 u_int tx_nocompl; /* tx WR credits since last compl request */
120 u_int plen_nocompl; /* payload since last compl request */
122 /* rx credit handling */
123 u_int sb_cc; /* last noted value of so_rcv->sb_cc */
124 int rx_credits; /* rx credits (in bytes) to be returned to hw */
126 u_int ulp_mode; /* ULP mode */
129 struct mbufq ulp_pduq; /* PDUs waiting to be sent out. */
130 struct mbufq ulp_pdu_reclaimq;
133 struct ddp_buffer *db[2];
137 /* Tx software descriptor */
142 struct ofld_tx_sdesc txsd[];
145 struct flowc_tx_params {
148 unsigned int snd_space;
152 #define DDP_RETRY_WAIT 5 /* seconds to wait before re-enabling DDP */
153 #define DDP_LOW_SCORE 1
154 #define DDP_HIGH_SCORE 3
157 * Compressed state for embryonic connections for a listener. Barely fits in
158 * 64B, try not to grow it further.
161 TAILQ_ENTRY(synq_entry) link; /* listen_ctx's synq link */
162 int flags; /* same as toepcb's tp_flags */
164 struct listen_ctx *lctx; /* backpointer to listen ctx */
168 volatile uintptr_t wr;
169 volatile u_int refcnt;
171 uint16_t rcv_bufsize;
174 /* listen_ctx flags */
175 #define LCTX_RPL_PENDING 1 /* waiting for a CPL_PASS_OPEN_RPL */
178 LIST_ENTRY(listen_ctx) link; /* listen hash linkage */
179 volatile int refcount;
181 struct stid_region stid_region;
183 struct inpcb *inp; /* listening socket's inp */
184 struct sge_wrq *ctrlq;
185 struct sge_ofld_rxq *ofld_rxq;
186 struct clip_entry *ce;
187 TAILQ_HEAD(, synq_entry) synq;
191 TAILQ_ENTRY(clip_entry) link;
192 struct in6_addr lip; /* local IPv6 address */
196 TAILQ_HEAD(clip_head, clip_entry);
200 /* toepcb's associated with this TOE device */
201 struct mtx toep_list_lock;
202 TAILQ_HEAD(, toepcb) toep_list;
204 struct mtx lctx_hash_lock;
205 LIST_HEAD(, listen_ctx) *listen_hash;
207 int lctx_count; /* # of lctx in the hash table */
212 struct mtx clip_table_lock;
213 struct clip_head clip_table;
216 /* WRs that will not be sent to the chip because L2 resolution failed */
217 struct mtx unsent_wr_lock;
218 STAILQ_HEAD(, wrqe) unsent_wr_list;
219 struct task reclaim_wr_resources;
222 static inline struct tom_data *
223 tod_td(struct toedev *tod)
226 return (__containerof(tod, struct tom_data, tod));
229 static inline struct adapter *
230 td_adapter(struct tom_data *td)
233 return (td->tod.tod_softc);
237 * XXX: Don't define these for the iWARP driver on 10 due to differences
240 #ifndef _LINUX_TYPES_H_
242 set_mbuf_ulp_submode(struct mbuf *m, uint8_t ulp_submode)
246 m->m_pkthdr.PH_per.eigth[0] = ulp_submode;
249 static inline uint8_t
250 mbuf_ulp_submode(struct mbuf *m)
254 return (m->m_pkthdr.PH_per.eigth[0]);
259 struct toepcb *alloc_toepcb(struct vi_info *, int, int, int);
260 void free_toepcb(struct toepcb *);
261 void offload_socket(struct socket *, struct toepcb *);
262 void undo_offload_socket(struct socket *);
263 void final_cpl_received(struct toepcb *);
264 void insert_tid(struct adapter *, int, void *);
265 void *lookup_tid(struct adapter *, int);
266 void update_tid(struct adapter *, int, void *);
267 void remove_tid(struct adapter *, int);
268 void release_tid(struct adapter *, int, struct sge_wrq *);
269 int find_best_mtu_idx(struct adapter *, struct in_conninfo *, int);
270 u_long select_rcv_wnd(struct socket *);
271 int select_rcv_wscale(void);
272 uint64_t calc_opt0(struct socket *, struct vi_info *, struct l2t_entry *,
274 uint64_t select_ntuple(struct vi_info *, struct l2t_entry *);
275 void set_tcpddp_ulp_mode(struct toepcb *);
276 int negative_advice(int);
277 struct clip_entry *hold_lip(struct tom_data *, struct in6_addr *);
278 void release_lip(struct tom_data *, struct clip_entry *);
281 void t4_init_connect_cpl_handlers(void);
282 int t4_connect(struct toedev *, struct socket *, struct rtentry *,
284 void act_open_failure_cleanup(struct adapter *, u_int, u_int);
287 void t4_init_listen_cpl_handlers(void);
288 int t4_listen_start(struct toedev *, struct tcpcb *);
289 int t4_listen_stop(struct toedev *, struct tcpcb *);
290 void t4_syncache_added(struct toedev *, void *);
291 void t4_syncache_removed(struct toedev *, void *);
292 int t4_syncache_respond(struct toedev *, void *, struct mbuf *);
293 int do_abort_req_synqe(struct sge_iq *, const struct rss_header *,
295 int do_abort_rpl_synqe(struct sge_iq *, const struct rss_header *,
297 void t4_offload_socket(struct toedev *, void *, struct socket *);
300 void t4_init_cpl_io_handlers(void);
301 void t4_uninit_cpl_io_handlers(void);
302 void send_abort_rpl(struct adapter *, struct sge_wrq *, int , int);
303 void send_flowc_wr(struct toepcb *, struct flowc_tx_params *);
304 void send_reset(struct adapter *, struct toepcb *, uint32_t);
305 void make_established(struct toepcb *, uint32_t, uint32_t, uint16_t);
306 void t4_rcvd(struct toedev *, struct tcpcb *);
307 int t4_tod_output(struct toedev *, struct tcpcb *);
308 int t4_send_fin(struct toedev *, struct tcpcb *);
309 int t4_send_rst(struct toedev *, struct tcpcb *);
310 void t4_set_tcb_field(struct adapter *, struct sge_wrq *, int, uint16_t,
311 uint64_t, uint64_t, int, int, int);
312 void t4_push_frames(struct adapter *sc, struct toepcb *toep, int drop);
313 void t4_push_pdus(struct adapter *sc, struct toepcb *toep, int drop);
314 int do_set_tcb_rpl(struct sge_iq *, const struct rss_header *, struct mbuf *);
317 void t4_init_ddp(struct adapter *, struct tom_data *);
318 void t4_uninit_ddp(struct adapter *, struct tom_data *);
319 int t4_soreceive_ddp(struct socket *, struct sockaddr **, struct uio *,
320 struct mbuf **, struct mbuf **, int *);
321 int t4_ddp_mod_load(void);
322 void t4_ddp_mod_unload(void);
323 void enable_ddp(struct adapter *, struct toepcb *toep);
324 void release_ddp_resources(struct toepcb *toep);
325 void handle_ddp_close(struct toepcb *, struct tcpcb *, struct sockbuf *,
327 void insert_ddp_data(struct toepcb *, uint32_t);