1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (c) 2018 Chelsio Communications, Inc.
4 */
5
6 #ifndef __CHTLS_H__
7 #define __CHTLS_H__
8
9 #include <crypto/aes.h>
10 #include <crypto/algapi.h>
11 #include <crypto/hash.h>
12 #include <crypto/sha1.h>
13 #include <crypto/sha2.h>
14 #include <crypto/authenc.h>
15 #include <crypto/ctr.h>
16 #include <crypto/gf128mul.h>
17 #include <crypto/internal/aead.h>
18 #include <crypto/null.h>
19 #include <crypto/internal/skcipher.h>
20 #include <crypto/aead.h>
21 #include <crypto/scatterwalk.h>
22 #include <crypto/internal/hash.h>
23 #include <linux/tls.h>
24 #include <net/tls.h>
25 #include <net/tls_prot.h>
26 #include <net/tls_toe.h>
27
28 #include "t4fw_api.h"
29 #include "t4_msg.h"
30 #include "cxgb4.h"
31 #include "cxgb4_uld.h"
32 #include "l2t.h"
33 #include "chcr_algo.h"
34 #include "chcr_core.h"
35 #include "chcr_crypto.h"
36
37 #define CHTLS_DRV_VERSION "1.0.0.0-ko"
38
39 #define TLS_KEYCTX_RXFLIT_CNT_S 24
40 #define TLS_KEYCTX_RXFLIT_CNT_V(x) ((x) << TLS_KEYCTX_RXFLIT_CNT_S)
41
42 #define TLS_KEYCTX_RXPROT_VER_S 20
43 #define TLS_KEYCTX_RXPROT_VER_M 0xf
44 #define TLS_KEYCTX_RXPROT_VER_V(x) ((x) << TLS_KEYCTX_RXPROT_VER_S)
45
46 #define TLS_KEYCTX_RXCIPH_MODE_S 16
47 #define TLS_KEYCTX_RXCIPH_MODE_M 0xf
48 #define TLS_KEYCTX_RXCIPH_MODE_V(x) ((x) << TLS_KEYCTX_RXCIPH_MODE_S)
49
50 #define TLS_KEYCTX_RXAUTH_MODE_S 12
51 #define TLS_KEYCTX_RXAUTH_MODE_M 0xf
52 #define TLS_KEYCTX_RXAUTH_MODE_V(x) ((x) << TLS_KEYCTX_RXAUTH_MODE_S)
53
54 #define TLS_KEYCTX_RXCIAU_CTRL_S 11
55 #define TLS_KEYCTX_RXCIAU_CTRL_V(x) ((x) << TLS_KEYCTX_RXCIAU_CTRL_S)
56
57 #define TLS_KEYCTX_RX_SEQCTR_S 9
58 #define TLS_KEYCTX_RX_SEQCTR_M 0x3
59 #define TLS_KEYCTX_RX_SEQCTR_V(x) ((x) << TLS_KEYCTX_RX_SEQCTR_S)
60
61 #define TLS_KEYCTX_RX_VALID_S 8
62 #define TLS_KEYCTX_RX_VALID_V(x) ((x) << TLS_KEYCTX_RX_VALID_S)
63
64 #define TLS_KEYCTX_RXCK_SIZE_S 3
65 #define TLS_KEYCTX_RXCK_SIZE_M 0x7
66 #define TLS_KEYCTX_RXCK_SIZE_V(x) ((x) << TLS_KEYCTX_RXCK_SIZE_S)
67
68 #define TLS_KEYCTX_RXMK_SIZE_S 0
69 #define TLS_KEYCTX_RXMK_SIZE_M 0x7
70 #define TLS_KEYCTX_RXMK_SIZE_V(x) ((x) << TLS_KEYCTX_RXMK_SIZE_S)
71
72 #define KEYCTX_TX_WR_IV_S 55
73 #define KEYCTX_TX_WR_IV_M 0x1ffULL
74 #define KEYCTX_TX_WR_IV_V(x) ((x) << KEYCTX_TX_WR_IV_S)
75 #define KEYCTX_TX_WR_IV_G(x) \
76 (((x) >> KEYCTX_TX_WR_IV_S) & KEYCTX_TX_WR_IV_M)
77
78 #define KEYCTX_TX_WR_AAD_S 47
79 #define KEYCTX_TX_WR_AAD_M 0xffULL
80 #define KEYCTX_TX_WR_AAD_V(x) ((x) << KEYCTX_TX_WR_AAD_S)
81 #define KEYCTX_TX_WR_AAD_G(x) (((x) >> KEYCTX_TX_WR_AAD_S) & \
82 KEYCTX_TX_WR_AAD_M)
83
84 #define KEYCTX_TX_WR_AADST_S 39
85 #define KEYCTX_TX_WR_AADST_M 0xffULL
86 #define KEYCTX_TX_WR_AADST_V(x) ((x) << KEYCTX_TX_WR_AADST_S)
87 #define KEYCTX_TX_WR_AADST_G(x) \
88 (((x) >> KEYCTX_TX_WR_AADST_S) & KEYCTX_TX_WR_AADST_M)
89
90 #define KEYCTX_TX_WR_CIPHER_S 30
91 #define KEYCTX_TX_WR_CIPHER_M 0x1ffULL
92 #define KEYCTX_TX_WR_CIPHER_V(x) ((x) << KEYCTX_TX_WR_CIPHER_S)
93 #define KEYCTX_TX_WR_CIPHER_G(x) \
94 (((x) >> KEYCTX_TX_WR_CIPHER_S) & KEYCTX_TX_WR_CIPHER_M)
95
96 #define KEYCTX_TX_WR_CIPHERST_S 23
97 #define KEYCTX_TX_WR_CIPHERST_M 0x7f
98 #define KEYCTX_TX_WR_CIPHERST_V(x) ((x) << KEYCTX_TX_WR_CIPHERST_S)
99 #define KEYCTX_TX_WR_CIPHERST_G(x) \
100 (((x) >> KEYCTX_TX_WR_CIPHERST_S) & KEYCTX_TX_WR_CIPHERST_M)
101
102 #define KEYCTX_TX_WR_AUTH_S 14
103 #define KEYCTX_TX_WR_AUTH_M 0x1ff
104 #define KEYCTX_TX_WR_AUTH_V(x) ((x) << KEYCTX_TX_WR_AUTH_S)
105 #define KEYCTX_TX_WR_AUTH_G(x) \
106 (((x) >> KEYCTX_TX_WR_AUTH_S) & KEYCTX_TX_WR_AUTH_M)
107
108 #define KEYCTX_TX_WR_AUTHST_S 7
109 #define KEYCTX_TX_WR_AUTHST_M 0x7f
110 #define KEYCTX_TX_WR_AUTHST_V(x) ((x) << KEYCTX_TX_WR_AUTHST_S)
111 #define KEYCTX_TX_WR_AUTHST_G(x) \
112 (((x) >> KEYCTX_TX_WR_AUTHST_S) & KEYCTX_TX_WR_AUTHST_M)
113
114 #define KEYCTX_TX_WR_AUTHIN_S 0
115 #define KEYCTX_TX_WR_AUTHIN_M 0x7f
116 #define KEYCTX_TX_WR_AUTHIN_V(x) ((x) << KEYCTX_TX_WR_AUTHIN_S)
117 #define KEYCTX_TX_WR_AUTHIN_G(x) \
118 (((x) >> KEYCTX_TX_WR_AUTHIN_S) & KEYCTX_TX_WR_AUTHIN_M)
119
120 struct sge_opaque_hdr {
121 void *dev;
122 dma_addr_t addr[MAX_SKB_FRAGS + 1];
123 };
124
125 #define MAX_IVS_PAGE 256
126 #define TLS_KEY_CONTEXT_SZ 64
127 #define CIPHER_BLOCK_SIZE 16
128 #define GCM_TAG_SIZE 16
129 #define KEY_ON_MEM_SZ 16
130 #define AEAD_EXPLICIT_DATA_SIZE 8
131 #define TLS_HEADER_LENGTH 5
132 #define SCMD_CIPH_MODE_AES_GCM 2
133 /* Any MFS size should work and come from openssl */
134 #define TLS_MFS 16384
135
136 #define RSS_HDR sizeof(struct rss_header)
137 #define TLS_WR_CPL_LEN \
138 (sizeof(struct fw_tlstx_data_wr) + sizeof(struct cpl_tx_tls_sfo))
139
140 enum {
141 CHTLS_KEY_CONTEXT_DSGL,
142 CHTLS_KEY_CONTEXT_IMM,
143 CHTLS_KEY_CONTEXT_DDR,
144 };
145
146 enum {
147 CHTLS_LISTEN_START,
148 CHTLS_LISTEN_STOP,
149 };
150
151 /* Flags for return value of CPL message handlers */
152 enum {
153 CPL_RET_BUF_DONE = 1, /* buffer processing done */
154 CPL_RET_BAD_MSG = 2, /* bad CPL message */
155 CPL_RET_UNKNOWN_TID = 4 /* unexpected unknown TID */
156 };
157
158 #define LISTEN_INFO_HASH_SIZE 32
159 #define RSPQ_HASH_BITS 5
160 struct listen_info {
161 struct listen_info *next; /* Link to next entry */
162 struct sock *sk; /* The listening socket */
163 unsigned int stid; /* The server TID */
164 };
165
166 enum {
167 T4_LISTEN_START_PENDING,
168 T4_LISTEN_STARTED
169 };
170
171 enum csk_flags {
172 CSK_CALLBACKS_CHKD, /* socket callbacks have been sanitized */
173 CSK_ABORT_REQ_RCVD, /* received one ABORT_REQ_RSS message */
174 CSK_TX_MORE_DATA, /* sending ULP data; don't set SHOVE bit */
175 CSK_TX_WAIT_IDLE, /* suspend Tx until in-flight data is ACKed */
176 CSK_ABORT_SHUTDOWN, /* shouldn't send more abort requests */
177 CSK_ABORT_RPL_PENDING, /* expecting an abort reply */
178 CSK_CLOSE_CON_REQUESTED,/* we've sent a close_conn_req */
179 CSK_TX_DATA_SENT, /* sent a TX_DATA WR on this connection */
180 CSK_TX_FAILOVER, /* Tx traffic failing over */
181 CSK_UPDATE_RCV_WND, /* Need to update rcv window */
182 CSK_RST_ABORTED, /* outgoing RST was aborted */
183 CSK_TLS_HANDSHK, /* TLS Handshake */
184 CSK_CONN_INLINE, /* Connection on HW */
185 };
186
187 enum chtls_cdev_state {
188 CHTLS_CDEV_STATE_UP = 1
189 };
190
191 struct listen_ctx {
192 struct sock *lsk;
193 struct chtls_dev *cdev;
194 struct sk_buff_head synq;
195 u32 state;
196 };
197
198 struct key_map {
199 unsigned long *addr;
200 unsigned int start;
201 unsigned int available;
202 unsigned int size;
203 spinlock_t lock; /* lock for key id request from map */
204 } __packed;
205
206 struct tls_scmd {
207 u32 seqno_numivs;
208 u32 ivgen_hdrlen;
209 };
210
211 struct chtls_dev {
212 struct tls_toe_device tlsdev;
213 struct list_head list;
214 struct cxgb4_lld_info *lldi;
215 struct pci_dev *pdev;
216 struct listen_info *listen_hash_tab[LISTEN_INFO_HASH_SIZE];
217 spinlock_t listen_lock; /* lock for listen list */
218 struct net_device **ports;
219 struct tid_info *tids;
220 unsigned int pfvf;
221 const unsigned short *mtus;
222
223 struct idr hwtid_idr;
224 struct idr stid_idr;
225
226 spinlock_t idr_lock ____cacheline_aligned_in_smp;
227
228 struct net_device *egr_dev[NCHAN * 2];
229 struct sk_buff *rspq_skb_cache[1 << RSPQ_HASH_BITS];
230 struct sk_buff *askb;
231
232 struct sk_buff_head deferq;
233 struct work_struct deferq_task;
234
235 struct list_head list_node;
236 struct list_head rcu_node;
237 struct list_head na_node;
238 unsigned int send_page_order;
239 int max_host_sndbuf;
240 u32 round_robin_cnt;
241 struct key_map kmap;
242 unsigned int cdev_state;
243 };
244
245 struct chtls_listen {
246 struct chtls_dev *cdev;
247 struct sock *sk;
248 };
249
250 struct chtls_hws {
251 struct sk_buff_head sk_recv_queue;
252 u8 txqid;
253 u8 ofld;
254 u16 type;
255 u16 rstate;
256 u16 keyrpl;
257 u16 pldlen;
258 u16 rcvpld;
259 u16 compute;
260 u16 expansion;
261 u16 keylen;
262 u16 pdus;
263 u16 adjustlen;
264 u16 ivsize;
265 u16 txleft;
266 u32 mfs;
267 s32 txkey;
268 s32 rxkey;
269 u32 fcplenmax;
270 u32 copied_seq;
271 u64 tx_seq_no;
272 struct tls_scmd scmd;
273 union {
274 struct tls12_crypto_info_aes_gcm_128 aes_gcm_128;
275 struct tls12_crypto_info_aes_gcm_256 aes_gcm_256;
276 } crypto_info;
277 };
278
279 struct chtls_sock {
280 struct sock *sk;
281 struct chtls_dev *cdev;
282 struct l2t_entry *l2t_entry; /* pointer to the L2T entry */
283 struct net_device *egress_dev; /* TX_CHAN for act open retry */
284
285 struct sk_buff_head txq;
286 struct sk_buff *wr_skb_head;
287 struct sk_buff *wr_skb_tail;
288 struct sk_buff *ctrl_skb_cache;
289 struct sk_buff *txdata_skb_cache; /* abort path messages */
290 struct kref kref;
291 unsigned long flags;
292 u32 opt2;
293 u32 wr_credits;
294 u32 wr_unacked;
295 u32 wr_max_credits;
296 u32 wr_nondata;
297 u32 hwtid; /* TCP Control Block ID */
298 u32 txq_idx;
299 u32 rss_qid;
300 u32 tid;
301 u32 idr;
302 u32 mss;
303 u32 ulp_mode;
304 u32 tx_chan;
305 u32 rx_chan;
306 u32 sndbuf;
307 u32 txplen_max;
308 u32 mtu_idx; /* MTU table index */
309 u32 smac_idx;
310 u8 port_id;
311 u8 tos;
312 u16 resv2;
313 u32 delack_mode;
314 u32 delack_seq;
315 u32 snd_win;
316 u32 rcv_win;
317
318 void *passive_reap_next; /* placeholder for passive */
319 struct chtls_hws tlshws;
320 struct synq {
321 struct sk_buff *next;
322 struct sk_buff *prev;
323 } synq;
324 struct listen_ctx *listen_ctx;
325 };
326
327 struct tls_hdr {
328 u8 type;
329 u16 version;
330 u16 length;
331 } __packed;
332
333 struct tlsrx_cmp_hdr {
334 u8 type;
335 u16 version;
336 u16 length;
337
338 u64 tls_seq;
339 u16 reserved1;
340 u8 res_to_mac_error;
341 } __packed;
342
343 /* res_to_mac_error fields */
344 #define TLSRX_HDR_PKT_INT_ERROR_S 4
345 #define TLSRX_HDR_PKT_INT_ERROR_M 0x1
346 #define TLSRX_HDR_PKT_INT_ERROR_V(x) \
347 ((x) << TLSRX_HDR_PKT_INT_ERROR_S)
348 #define TLSRX_HDR_PKT_INT_ERROR_G(x) \
349 (((x) >> TLSRX_HDR_PKT_INT_ERROR_S) & TLSRX_HDR_PKT_INT_ERROR_M)
350 #define TLSRX_HDR_PKT_INT_ERROR_F TLSRX_HDR_PKT_INT_ERROR_V(1U)
351
352 #define TLSRX_HDR_PKT_SPP_ERROR_S 3
353 #define TLSRX_HDR_PKT_SPP_ERROR_M 0x1
354 #define TLSRX_HDR_PKT_SPP_ERROR_V(x) ((x) << TLSRX_HDR_PKT_SPP_ERROR)
355 #define TLSRX_HDR_PKT_SPP_ERROR_G(x) \
356 (((x) >> TLSRX_HDR_PKT_SPP_ERROR_S) & TLSRX_HDR_PKT_SPP_ERROR_M)
357 #define TLSRX_HDR_PKT_SPP_ERROR_F TLSRX_HDR_PKT_SPP_ERROR_V(1U)
358
359 #define TLSRX_HDR_PKT_CCDX_ERROR_S 2
360 #define TLSRX_HDR_PKT_CCDX_ERROR_M 0x1
361 #define TLSRX_HDR_PKT_CCDX_ERROR_V(x) ((x) << TLSRX_HDR_PKT_CCDX_ERROR_S)
362 #define TLSRX_HDR_PKT_CCDX_ERROR_G(x) \
363 (((x) >> TLSRX_HDR_PKT_CCDX_ERROR_S) & TLSRX_HDR_PKT_CCDX_ERROR_M)
364 #define TLSRX_HDR_PKT_CCDX_ERROR_F TLSRX_HDR_PKT_CCDX_ERROR_V(1U)
365
366 #define TLSRX_HDR_PKT_PAD_ERROR_S 1
367 #define TLSRX_HDR_PKT_PAD_ERROR_M 0x1
368 #define TLSRX_HDR_PKT_PAD_ERROR_V(x) ((x) << TLSRX_HDR_PKT_PAD_ERROR_S)
369 #define TLSRX_HDR_PKT_PAD_ERROR_G(x) \
370 (((x) >> TLSRX_HDR_PKT_PAD_ERROR_S) & TLSRX_HDR_PKT_PAD_ERROR_M)
371 #define TLSRX_HDR_PKT_PAD_ERROR_F TLSRX_HDR_PKT_PAD_ERROR_V(1U)
372
373 #define TLSRX_HDR_PKT_MAC_ERROR_S 0
374 #define TLSRX_HDR_PKT_MAC_ERROR_M 0x1
375 #define TLSRX_HDR_PKT_MAC_ERROR_V(x) ((x) << TLSRX_HDR_PKT_MAC_ERROR)
376 #define TLSRX_HDR_PKT_MAC_ERROR_G(x) \
377 (((x) >> S_TLSRX_HDR_PKT_MAC_ERROR_S) & TLSRX_HDR_PKT_MAC_ERROR_M)
378 #define TLSRX_HDR_PKT_MAC_ERROR_F TLSRX_HDR_PKT_MAC_ERROR_V(1U)
379
380 #define TLSRX_HDR_PKT_ERROR_M 0x1F
381 #define CONTENT_TYPE_ERROR 0x7F
382
383 struct ulp_mem_rw {
384 __be32 cmd;
385 __be32 len16; /* command length */
386 __be32 dlen; /* data length in 32-byte units */
387 __be32 lock_addr;
388 };
389
390 struct tls_key_wr {
391 __be32 op_to_compl;
392 __be32 flowid_len16;
393 __be32 ftid;
394 u8 reneg_to_write_rx;
395 u8 protocol;
396 __be16 mfs;
397 };
398
399 struct tls_key_req {
400 struct tls_key_wr wr;
401 struct ulp_mem_rw req;
402 struct ulptx_idata sc_imm;
403 };
404
405 /*
406 * This lives in skb->cb and is used to chain WRs in a linked list.
407 */
408 struct wr_skb_cb {
409 struct l2t_skb_cb l2t; /* reserve space for l2t CB */
410 struct sk_buff *next_wr; /* next write request */
411 };
412
413 /* Per-skb backlog handler. Run when a socket's backlog is processed. */
414 struct blog_skb_cb {
415 void (*backlog_rcv)(struct sock *sk, struct sk_buff *skb);
416 struct chtls_dev *cdev;
417 };
418
419 /*
420 * Similar to tcp_skb_cb but with ULP elements added to support TLS,
421 * etc.
422 */
423 struct ulp_skb_cb {
424 struct wr_skb_cb wr; /* reserve space for write request */
425 u16 flags; /* TCP-like flags */
426 u8 psh;
427 u8 ulp_mode; /* ULP mode/submode of sk_buff */
428 u32 seq; /* TCP sequence number */
429 union { /* ULP-specific fields */
430 struct {
431 u8 type;
432 u8 ofld;
433 u8 iv;
434 } tls;
435 } ulp;
436 };
437
438 #define ULP_SKB_CB(skb) ((struct ulp_skb_cb *)&((skb)->cb[0]))
439 #define BLOG_SKB_CB(skb) ((struct blog_skb_cb *)(skb)->cb)
440
441 /*
442 * Flags for ulp_skb_cb.flags.
443 */
444 enum {
445 ULPCB_FLAG_NEED_HDR = 1 << 0, /* packet needs a TX_DATA_WR header */
446 ULPCB_FLAG_NO_APPEND = 1 << 1, /* don't grow this skb */
447 ULPCB_FLAG_BARRIER = 1 << 2, /* set TX_WAIT_IDLE after sending */
448 ULPCB_FLAG_HOLD = 1 << 3, /* skb not ready for Tx yet */
449 ULPCB_FLAG_COMPL = 1 << 4, /* request WR completion */
450 ULPCB_FLAG_URG = 1 << 5, /* urgent data */
451 ULPCB_FLAG_TLS_HDR = 1 << 6, /* payload with tls hdr */
452 ULPCB_FLAG_NO_HDR = 1 << 7, /* not a ofld wr */
453 };
454
455 /* The ULP mode/submode of an skbuff */
456 #define skb_ulp_mode(skb) (ULP_SKB_CB(skb)->ulp_mode)
457 #define TCP_PAGE(sk) (sk->sk_frag.page)
458 #define TCP_OFF(sk) (sk->sk_frag.offset)
459
to_chtls_dev(struct tls_toe_device * tlsdev)460 static inline struct chtls_dev *to_chtls_dev(struct tls_toe_device *tlsdev)
461 {
462 return container_of(tlsdev, struct chtls_dev, tlsdev);
463 }
464
csk_set_flag(struct chtls_sock * csk,enum csk_flags flag)465 static inline void csk_set_flag(struct chtls_sock *csk,
466 enum csk_flags flag)
467 {
468 __set_bit(flag, &csk->flags);
469 }
470
csk_reset_flag(struct chtls_sock * csk,enum csk_flags flag)471 static inline void csk_reset_flag(struct chtls_sock *csk,
472 enum csk_flags flag)
473 {
474 __clear_bit(flag, &csk->flags);
475 }
476
csk_conn_inline(const struct chtls_sock * csk)477 static inline bool csk_conn_inline(const struct chtls_sock *csk)
478 {
479 return test_bit(CSK_CONN_INLINE, &csk->flags);
480 }
481
csk_flag(const struct sock * sk,enum csk_flags flag)482 static inline int csk_flag(const struct sock *sk, enum csk_flags flag)
483 {
484 struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
485
486 if (!csk_conn_inline(csk))
487 return 0;
488 return test_bit(flag, &csk->flags);
489 }
490
csk_flag_nochk(const struct chtls_sock * csk,enum csk_flags flag)491 static inline int csk_flag_nochk(const struct chtls_sock *csk,
492 enum csk_flags flag)
493 {
494 return test_bit(flag, &csk->flags);
495 }
496
cplhdr(struct sk_buff * skb)497 static inline void *cplhdr(struct sk_buff *skb)
498 {
499 return skb->data;
500 }
501
is_neg_adv(unsigned int status)502 static inline int is_neg_adv(unsigned int status)
503 {
504 return status == CPL_ERR_RTX_NEG_ADVICE ||
505 status == CPL_ERR_KEEPALV_NEG_ADVICE ||
506 status == CPL_ERR_PERSIST_NEG_ADVICE;
507 }
508
process_cpl_msg(void (* fn)(struct sock *,struct sk_buff *),struct sock * sk,struct sk_buff * skb)509 static inline void process_cpl_msg(void (*fn)(struct sock *, struct sk_buff *),
510 struct sock *sk,
511 struct sk_buff *skb)
512 {
513 skb_reset_mac_header(skb);
514 skb_reset_network_header(skb);
515 skb_reset_transport_header(skb);
516
517 bh_lock_sock(sk);
518 if (unlikely(sock_owned_by_user(sk))) {
519 BLOG_SKB_CB(skb)->backlog_rcv = fn;
520 __sk_add_backlog(sk, skb);
521 } else {
522 fn(sk, skb);
523 }
524 bh_unlock_sock(sk);
525 }
526
chtls_sock_free(struct kref * ref)527 static inline void chtls_sock_free(struct kref *ref)
528 {
529 struct chtls_sock *csk = container_of(ref, struct chtls_sock,
530 kref);
531 kfree(csk);
532 }
533
__chtls_sock_put(const char * fn,struct chtls_sock * csk)534 static inline void __chtls_sock_put(const char *fn, struct chtls_sock *csk)
535 {
536 kref_put(&csk->kref, chtls_sock_free);
537 }
538
__chtls_sock_get(const char * fn,struct chtls_sock * csk)539 static inline void __chtls_sock_get(const char *fn,
540 struct chtls_sock *csk)
541 {
542 kref_get(&csk->kref);
543 }
544
send_or_defer(struct sock * sk,struct tcp_sock * tp,struct sk_buff * skb,int through_l2t)545 static inline void send_or_defer(struct sock *sk, struct tcp_sock *tp,
546 struct sk_buff *skb, int through_l2t)
547 {
548 struct chtls_sock *csk = rcu_dereference_sk_user_data(sk);
549
550 if (through_l2t) {
551 /* send through L2T */
552 cxgb4_l2t_send(csk->egress_dev, skb, csk->l2t_entry);
553 } else {
554 /* send directly */
555 cxgb4_ofld_send(csk->egress_dev, skb);
556 }
557 }
558
559 typedef int (*chtls_handler_func)(struct chtls_dev *, struct sk_buff *);
560 extern chtls_handler_func chtls_handlers[NUM_CPL_CMDS];
561 void chtls_install_cpl_ops(struct sock *sk);
562 int chtls_init_kmap(struct chtls_dev *cdev, struct cxgb4_lld_info *lldi);
563 void chtls_listen_stop(struct chtls_dev *cdev, struct sock *sk);
564 int chtls_listen_start(struct chtls_dev *cdev, struct sock *sk);
565 void chtls_close(struct sock *sk, long timeout);
566 int chtls_disconnect(struct sock *sk, int flags);
567 void chtls_shutdown(struct sock *sk, int how);
568 void chtls_destroy_sock(struct sock *sk);
569 int chtls_sendmsg(struct sock *sk, struct msghdr *msg, size_t size);
570 int chtls_recvmsg(struct sock *sk, struct msghdr *msg,
571 size_t len, int flags, int *addr_len);
572 void chtls_splice_eof(struct socket *sock);
573 int send_tx_flowc_wr(struct sock *sk, int compl,
574 u32 snd_nxt, u32 rcv_nxt);
575 void chtls_tcp_push(struct sock *sk, int flags);
576 int chtls_push_frames(struct chtls_sock *csk, int comp);
577 int chtls_set_tcb_tflag(struct sock *sk, unsigned int bit_pos, int val);
578 void chtls_set_tcb_field_rpl_skb(struct sock *sk, u16 word,
579 u64 mask, u64 val, u8 cookie,
580 int through_l2t);
581 int chtls_setkey(struct chtls_sock *csk, u32 keylen, u32 mode, int cipher_type);
582 void chtls_set_quiesce_ctrl(struct sock *sk, int val);
583 void skb_entail(struct sock *sk, struct sk_buff *skb, int flags);
584 unsigned int keyid_to_addr(int start_addr, int keyid);
585 void free_tls_keyid(struct sock *sk);
586 #endif
587
