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34aba2c4 RM |
1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* Copyright (C) 2020 Chelsio Communications. All rights reserved. */ | |
3 | ||
a8c16e8e RM |
4 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
5 | ||
6 | #include <linux/skbuff.h> | |
7 | #include <linux/module.h> | |
21f6f946 | 8 | #include <linux/highmem.h> |
a8c16e8e RM |
9 | #include <linux/ip.h> |
10 | #include <net/ipv6.h> | |
11 | #include <linux/netdevice.h> | |
a3b01ffd | 12 | #include <crypto/aes.h> |
34aba2c4 | 13 | #include "chcr_ktls.h" |
a8c16e8e RM |
14 | |
15 | static LIST_HEAD(uld_ctx_list); | |
16 | static DEFINE_MUTEX(dev_mutex); | |
34aba2c4 | 17 | |
687823d2 RM |
18 | /* chcr_get_nfrags_to_send: get the remaining nfrags after start offset |
19 | * @skb: skb | |
20 | * @start: start offset. | |
21 | * @len: how much data to send after @start | |
22 | */ | |
23 | static int chcr_get_nfrags_to_send(struct sk_buff *skb, u32 start, u32 len) | |
24 | { | |
25 | struct skb_shared_info *si = skb_shinfo(skb); | |
26 | u32 frag_size, skb_linear_data_len = skb_headlen(skb); | |
27 | u8 nfrags = 0, frag_idx = 0; | |
28 | skb_frag_t *frag; | |
29 | ||
30 | /* if its a linear skb then return 1 */ | |
31 | if (!skb_is_nonlinear(skb)) | |
32 | return 1; | |
33 | ||
34 | if (unlikely(start < skb_linear_data_len)) { | |
35 | frag_size = min(len, skb_linear_data_len - start); | |
687823d2 RM |
36 | } else { |
37 | start -= skb_linear_data_len; | |
38 | ||
39 | frag = &si->frags[frag_idx]; | |
40 | frag_size = skb_frag_size(frag); | |
41 | while (start >= frag_size) { | |
42 | start -= frag_size; | |
43 | frag_idx++; | |
44 | frag = &si->frags[frag_idx]; | |
45 | frag_size = skb_frag_size(frag); | |
46 | } | |
47 | frag_size = min(len, skb_frag_size(frag) - start); | |
48 | } | |
49 | len -= frag_size; | |
50 | nfrags++; | |
51 | ||
52 | while (len) { | |
53 | frag_size = min(len, skb_frag_size(&si->frags[frag_idx])); | |
54 | len -= frag_size; | |
55 | nfrags++; | |
56 | frag_idx++; | |
57 | } | |
58 | return nfrags; | |
59 | } | |
60 | ||
8a30923e | 61 | static int chcr_init_tcb_fields(struct chcr_ktls_info *tx_info); |
65e302a9 | 62 | static void clear_conn_resources(struct chcr_ktls_info *tx_info); |
8a30923e RM |
63 | /* |
64 | * chcr_ktls_save_keys: calculate and save crypto keys. | |
65 | * @tx_info - driver specific tls info. | |
66 | * @crypto_info - tls crypto information. | |
67 | * @direction - TX/RX direction. | |
68 | * return - SUCCESS/FAILURE. | |
69 | */ | |
70 | static int chcr_ktls_save_keys(struct chcr_ktls_info *tx_info, | |
71 | struct tls_crypto_info *crypto_info, | |
72 | enum tls_offload_ctx_dir direction) | |
73 | { | |
74 | int ck_size, key_ctx_size, mac_key_size, keylen, ghash_size, ret; | |
75 | unsigned char ghash_h[TLS_CIPHER_AES_GCM_256_TAG_SIZE]; | |
76 | struct tls12_crypto_info_aes_gcm_128 *info_128_gcm; | |
77 | struct ktls_key_ctx *kctx = &tx_info->key_ctx; | |
a3b01ffd | 78 | struct crypto_aes_ctx aes_ctx; |
8a30923e RM |
79 | unsigned char *key, *salt; |
80 | ||
81 | switch (crypto_info->cipher_type) { | |
82 | case TLS_CIPHER_AES_GCM_128: | |
83 | info_128_gcm = | |
84 | (struct tls12_crypto_info_aes_gcm_128 *)crypto_info; | |
85 | keylen = TLS_CIPHER_AES_GCM_128_KEY_SIZE; | |
86 | ck_size = CHCR_KEYCTX_CIPHER_KEY_SIZE_128; | |
87 | tx_info->salt_size = TLS_CIPHER_AES_GCM_128_SALT_SIZE; | |
88 | mac_key_size = CHCR_KEYCTX_MAC_KEY_SIZE_128; | |
89 | tx_info->iv_size = TLS_CIPHER_AES_GCM_128_IV_SIZE; | |
90 | tx_info->iv = be64_to_cpu(*(__be64 *)info_128_gcm->iv); | |
91 | ||
92 | ghash_size = TLS_CIPHER_AES_GCM_128_TAG_SIZE; | |
93 | key = info_128_gcm->key; | |
94 | salt = info_128_gcm->salt; | |
95 | tx_info->record_no = *(u64 *)info_128_gcm->rec_seq; | |
96 | ||
5a4b9fe7 RM |
97 | /* The SCMD fields used when encrypting a full TLS |
98 | * record. Its a one time calculation till the | |
99 | * connection exists. | |
100 | */ | |
101 | tx_info->scmd0_seqno_numivs = | |
102 | SCMD_SEQ_NO_CTRL_V(CHCR_SCMD_SEQ_NO_CTRL_64BIT) | | |
103 | SCMD_CIPH_AUTH_SEQ_CTRL_F | | |
104 | SCMD_PROTO_VERSION_V(CHCR_SCMD_PROTO_VERSION_TLS) | | |
105 | SCMD_CIPH_MODE_V(CHCR_SCMD_CIPHER_MODE_AES_GCM) | | |
106 | SCMD_AUTH_MODE_V(CHCR_SCMD_AUTH_MODE_GHASH) | | |
107 | SCMD_IV_SIZE_V(TLS_CIPHER_AES_GCM_128_IV_SIZE >> 1) | | |
108 | SCMD_NUM_IVS_V(1); | |
109 | ||
110 | /* keys will be sent inline. */ | |
111 | tx_info->scmd0_ivgen_hdrlen = SCMD_KEY_CTX_INLINE_F; | |
112 | ||
dc05f3df RM |
113 | /* The SCMD fields used when encrypting a partial TLS |
114 | * record (no trailer and possibly a truncated payload). | |
115 | */ | |
116 | tx_info->scmd0_short_seqno_numivs = | |
117 | SCMD_CIPH_AUTH_SEQ_CTRL_F | | |
118 | SCMD_PROTO_VERSION_V(CHCR_SCMD_PROTO_VERSION_GENERIC) | | |
119 | SCMD_CIPH_MODE_V(CHCR_SCMD_CIPHER_MODE_AES_CTR) | | |
120 | SCMD_IV_SIZE_V(AES_BLOCK_LEN >> 1); | |
121 | ||
122 | tx_info->scmd0_short_ivgen_hdrlen = | |
123 | tx_info->scmd0_ivgen_hdrlen | SCMD_AADIVDROP_F; | |
124 | ||
8a30923e RM |
125 | break; |
126 | ||
127 | default: | |
128 | pr_err("GCM: cipher type 0x%x not supported\n", | |
129 | crypto_info->cipher_type); | |
130 | ret = -EINVAL; | |
131 | goto out; | |
132 | } | |
133 | ||
134 | key_ctx_size = CHCR_KTLS_KEY_CTX_LEN + | |
135 | roundup(keylen, 16) + ghash_size; | |
136 | /* Calculate the H = CIPH(K, 0 repeated 16 times). | |
137 | * It will go in key context | |
138 | */ | |
8a30923e | 139 | |
a3b01ffd | 140 | ret = aes_expandkey(&aes_ctx, key, keylen); |
8a30923e | 141 | if (ret) |
a3b01ffd | 142 | goto out; |
8a30923e RM |
143 | |
144 | memset(ghash_h, 0, ghash_size); | |
a3b01ffd AB |
145 | aes_encrypt(&aes_ctx, ghash_h, ghash_h); |
146 | memzero_explicit(&aes_ctx, sizeof(aes_ctx)); | |
8a30923e RM |
147 | |
148 | /* fill the Key context */ | |
149 | if (direction == TLS_OFFLOAD_CTX_DIR_TX) { | |
150 | kctx->ctx_hdr = FILL_KEY_CTX_HDR(ck_size, | |
151 | mac_key_size, | |
152 | key_ctx_size >> 4); | |
153 | } else { | |
154 | ret = -EINVAL; | |
a3b01ffd | 155 | goto out; |
8a30923e RM |
156 | } |
157 | ||
158 | memcpy(kctx->salt, salt, tx_info->salt_size); | |
159 | memcpy(kctx->key, key, keylen); | |
160 | memcpy(kctx->key + keylen, ghash_h, ghash_size); | |
161 | tx_info->key_ctx_len = key_ctx_size; | |
162 | ||
8a30923e RM |
163 | out: |
164 | return ret; | |
165 | } | |
166 | ||
34aba2c4 RM |
167 | /* |
168 | * chcr_ktls_act_open_req: creates TCB entry for ipv4 connection. | |
169 | * @sk - tcp socket. | |
170 | * @tx_info - driver specific tls info. | |
171 | * @atid - connection active tid. | |
172 | * return - send success/failure. | |
173 | */ | |
174 | static int chcr_ktls_act_open_req(struct sock *sk, | |
175 | struct chcr_ktls_info *tx_info, | |
176 | int atid) | |
177 | { | |
178 | struct inet_sock *inet = inet_sk(sk); | |
179 | struct cpl_t6_act_open_req *cpl6; | |
180 | struct cpl_act_open_req *cpl; | |
181 | struct sk_buff *skb; | |
182 | unsigned int len; | |
183 | int qid_atid; | |
184 | u64 options; | |
185 | ||
186 | len = sizeof(*cpl6); | |
187 | skb = alloc_skb(len, GFP_KERNEL); | |
188 | if (unlikely(!skb)) | |
189 | return -ENOMEM; | |
190 | /* mark it a control pkt */ | |
191 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, tx_info->port_id); | |
192 | ||
193 | cpl6 = __skb_put_zero(skb, len); | |
194 | cpl = (struct cpl_act_open_req *)cpl6; | |
195 | INIT_TP_WR(cpl6, 0); | |
196 | qid_atid = TID_QID_V(tx_info->rx_qid) | | |
197 | TID_TID_V(atid); | |
198 | OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ, qid_atid)); | |
199 | cpl->local_port = inet->inet_sport; | |
200 | cpl->peer_port = inet->inet_dport; | |
201 | cpl->local_ip = inet->inet_rcv_saddr; | |
202 | cpl->peer_ip = inet->inet_daddr; | |
203 | ||
204 | /* fill first 64 bit option field. */ | |
205 | options = TCAM_BYPASS_F | ULP_MODE_V(ULP_MODE_NONE) | NON_OFFLOAD_F | | |
206 | SMAC_SEL_V(tx_info->smt_idx) | TX_CHAN_V(tx_info->tx_chan); | |
207 | cpl->opt0 = cpu_to_be64(options); | |
208 | ||
209 | /* next 64 bit option field. */ | |
210 | options = | |
211 | TX_QUEUE_V(tx_info->adap->params.tp.tx_modq[tx_info->tx_chan]); | |
212 | cpl->opt2 = htonl(options); | |
213 | ||
214 | return cxgb4_l2t_send(tx_info->netdev, skb, tx_info->l2te); | |
215 | } | |
216 | ||
76d7728d | 217 | #if IS_ENABLED(CONFIG_IPV6) |
62370a4f RM |
218 | /* |
219 | * chcr_ktls_act_open_req6: creates TCB entry for ipv6 connection. | |
220 | * @sk - tcp socket. | |
221 | * @tx_info - driver specific tls info. | |
222 | * @atid - connection active tid. | |
223 | * return - send success/failure. | |
224 | */ | |
225 | static int chcr_ktls_act_open_req6(struct sock *sk, | |
226 | struct chcr_ktls_info *tx_info, | |
227 | int atid) | |
228 | { | |
229 | struct inet_sock *inet = inet_sk(sk); | |
230 | struct cpl_t6_act_open_req6 *cpl6; | |
231 | struct cpl_act_open_req6 *cpl; | |
232 | struct sk_buff *skb; | |
233 | unsigned int len; | |
234 | int qid_atid; | |
235 | u64 options; | |
236 | ||
237 | len = sizeof(*cpl6); | |
238 | skb = alloc_skb(len, GFP_KERNEL); | |
239 | if (unlikely(!skb)) | |
240 | return -ENOMEM; | |
241 | /* mark it a control pkt */ | |
242 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, tx_info->port_id); | |
243 | ||
244 | cpl6 = __skb_put_zero(skb, len); | |
245 | cpl = (struct cpl_act_open_req6 *)cpl6; | |
246 | INIT_TP_WR(cpl6, 0); | |
247 | qid_atid = TID_QID_V(tx_info->rx_qid) | TID_TID_V(atid); | |
248 | OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_ACT_OPEN_REQ6, qid_atid)); | |
249 | cpl->local_port = inet->inet_sport; | |
250 | cpl->peer_port = inet->inet_dport; | |
251 | cpl->local_ip_hi = *(__be64 *)&sk->sk_v6_rcv_saddr.in6_u.u6_addr8[0]; | |
252 | cpl->local_ip_lo = *(__be64 *)&sk->sk_v6_rcv_saddr.in6_u.u6_addr8[8]; | |
253 | cpl->peer_ip_hi = *(__be64 *)&sk->sk_v6_daddr.in6_u.u6_addr8[0]; | |
254 | cpl->peer_ip_lo = *(__be64 *)&sk->sk_v6_daddr.in6_u.u6_addr8[8]; | |
255 | ||
256 | /* first 64 bit option field. */ | |
257 | options = TCAM_BYPASS_F | ULP_MODE_V(ULP_MODE_NONE) | NON_OFFLOAD_F | | |
258 | SMAC_SEL_V(tx_info->smt_idx) | TX_CHAN_V(tx_info->tx_chan); | |
259 | cpl->opt0 = cpu_to_be64(options); | |
260 | /* next 64 bit option field. */ | |
261 | options = | |
262 | TX_QUEUE_V(tx_info->adap->params.tp.tx_modq[tx_info->tx_chan]); | |
263 | cpl->opt2 = htonl(options); | |
264 | ||
265 | return cxgb4_l2t_send(tx_info->netdev, skb, tx_info->l2te); | |
266 | } | |
76d7728d | 267 | #endif /* #if IS_ENABLED(CONFIG_IPV6) */ |
62370a4f | 268 | |
34aba2c4 RM |
269 | /* |
270 | * chcr_setup_connection: create a TCB entry so that TP will form tcp packets. | |
271 | * @sk - tcp socket. | |
272 | * @tx_info - driver specific tls info. | |
273 | * return: NET_TX_OK/NET_XMIT_DROP | |
274 | */ | |
275 | static int chcr_setup_connection(struct sock *sk, | |
276 | struct chcr_ktls_info *tx_info) | |
277 | { | |
278 | struct tid_info *t = &tx_info->adap->tids; | |
279 | int atid, ret = 0; | |
280 | ||
281 | atid = cxgb4_alloc_atid(t, tx_info); | |
282 | if (atid == -1) | |
283 | return -EINVAL; | |
284 | ||
285 | tx_info->atid = atid; | |
34aba2c4 | 286 | |
efca3878 | 287 | if (tx_info->ip_family == AF_INET) { |
34aba2c4 | 288 | ret = chcr_ktls_act_open_req(sk, tx_info, atid); |
76d7728d | 289 | #if IS_ENABLED(CONFIG_IPV6) |
34aba2c4 | 290 | } else { |
efca3878 RM |
291 | ret = cxgb4_clip_get(tx_info->netdev, (const u32 *) |
292 | &sk->sk_v6_rcv_saddr, | |
293 | 1); | |
294 | if (ret) | |
295 | return ret; | |
296 | ret = chcr_ktls_act_open_req6(sk, tx_info, atid); | |
76d7728d | 297 | #endif |
34aba2c4 RM |
298 | } |
299 | ||
300 | /* if return type is NET_XMIT_CN, msg will be sent but delayed, mark ret | |
301 | * success, if any other return type clear atid and return that failure. | |
302 | */ | |
303 | if (ret) { | |
efca3878 | 304 | if (ret == NET_XMIT_CN) { |
34aba2c4 | 305 | ret = 0; |
efca3878 RM |
306 | } else { |
307 | #if IS_ENABLED(CONFIG_IPV6) | |
308 | /* clear clip entry */ | |
309 | if (tx_info->ip_family == AF_INET6) | |
310 | cxgb4_clip_release(tx_info->netdev, | |
311 | (const u32 *) | |
312 | &sk->sk_v6_rcv_saddr, | |
313 | 1); | |
314 | #endif | |
34aba2c4 | 315 | cxgb4_free_atid(t, atid); |
efca3878 | 316 | } |
34aba2c4 RM |
317 | } |
318 | ||
319 | return ret; | |
320 | } | |
321 | ||
322 | /* | |
323 | * chcr_set_tcb_field: update tcb fields. | |
324 | * @tx_info - driver specific tls info. | |
325 | * @word - TCB word. | |
326 | * @mask - TCB word related mask. | |
327 | * @val - TCB word related value. | |
328 | * @no_reply - set 1 if not looking for TP response. | |
329 | */ | |
330 | static int chcr_set_tcb_field(struct chcr_ktls_info *tx_info, u16 word, | |
331 | u64 mask, u64 val, int no_reply) | |
332 | { | |
333 | struct cpl_set_tcb_field *req; | |
334 | struct sk_buff *skb; | |
335 | ||
336 | skb = alloc_skb(sizeof(struct cpl_set_tcb_field), GFP_ATOMIC); | |
337 | if (!skb) | |
338 | return -ENOMEM; | |
339 | ||
340 | req = (struct cpl_set_tcb_field *)__skb_put_zero(skb, sizeof(*req)); | |
341 | INIT_TP_WR_CPL(req, CPL_SET_TCB_FIELD, tx_info->tid); | |
342 | req->reply_ctrl = htons(QUEUENO_V(tx_info->rx_qid) | | |
343 | NO_REPLY_V(no_reply)); | |
344 | req->word_cookie = htons(TCB_WORD_V(word)); | |
345 | req->mask = cpu_to_be64(mask); | |
346 | req->val = cpu_to_be64(val); | |
347 | ||
348 | set_wr_txq(skb, CPL_PRIORITY_CONTROL, tx_info->port_id); | |
349 | return cxgb4_ofld_send(tx_info->netdev, skb); | |
350 | } | |
351 | ||
34aba2c4 RM |
352 | /* |
353 | * chcr_ktls_dev_del: call back for tls_dev_del. | |
354 | * Remove the tid and l2t entry and close the connection. | |
355 | * it per connection basis. | |
356 | * @netdev - net device. | |
357 | * @tls_cts - tls context. | |
358 | * @direction - TX/RX crypto direction | |
359 | */ | |
a8c16e8e RM |
360 | static void chcr_ktls_dev_del(struct net_device *netdev, |
361 | struct tls_context *tls_ctx, | |
362 | enum tls_offload_ctx_dir direction) | |
34aba2c4 RM |
363 | { |
364 | struct chcr_ktls_ofld_ctx_tx *tx_ctx = | |
365 | chcr_get_ktls_tx_context(tls_ctx); | |
366 | struct chcr_ktls_info *tx_info = tx_ctx->chcr_info; | |
3427e13e | 367 | struct ch_ktls_port_stats_debug *port_stats; |
65e302a9 | 368 | struct chcr_ktls_uld_ctx *u_ctx; |
34aba2c4 RM |
369 | |
370 | if (!tx_info) | |
371 | return; | |
34aba2c4 | 372 | |
65e302a9 AS |
373 | u_ctx = tx_info->adap->uld[CXGB4_ULD_KTLS].handle; |
374 | if (u_ctx && u_ctx->detach) | |
375 | return; | |
62370a4f | 376 | /* clear l2t entry */ |
34aba2c4 RM |
377 | if (tx_info->l2te) |
378 | cxgb4_l2t_release(tx_info->l2te); | |
379 | ||
76d7728d | 380 | #if IS_ENABLED(CONFIG_IPV6) |
62370a4f RM |
381 | /* clear clip entry */ |
382 | if (tx_info->ip_family == AF_INET6) | |
efca3878 RM |
383 | cxgb4_clip_release(netdev, (const u32 *) |
384 | &tx_info->sk->sk_v6_rcv_saddr, | |
62370a4f | 385 | 1); |
76d7728d | 386 | #endif |
62370a4f RM |
387 | |
388 | /* clear tid */ | |
34aba2c4 | 389 | if (tx_info->tid != -1) { |
34aba2c4 RM |
390 | cxgb4_remove_tid(&tx_info->adap->tids, tx_info->tx_chan, |
391 | tx_info->tid, tx_info->ip_family); | |
65e302a9 AS |
392 | |
393 | xa_erase(&u_ctx->tid_list, tx_info->tid); | |
34aba2c4 | 394 | } |
62370a4f | 395 | |
3427e13e RM |
396 | port_stats = &tx_info->adap->ch_ktls_stats.ktls_port[tx_info->port_id]; |
397 | atomic64_inc(&port_stats->ktls_tx_connection_close); | |
34aba2c4 RM |
398 | kvfree(tx_info); |
399 | tx_ctx->chcr_info = NULL; | |
a3ac249a RM |
400 | /* release module refcount */ |
401 | module_put(THIS_MODULE); | |
34aba2c4 RM |
402 | } |
403 | ||
404 | /* | |
405 | * chcr_ktls_dev_add: call back for tls_dev_add. | |
406 | * Create a tcb entry for TP. Also add l2t entry for the connection. And | |
407 | * generate keys & save those keys locally. | |
408 | * @netdev - net device. | |
409 | * @tls_cts - tls context. | |
410 | * @direction - TX/RX crypto direction | |
411 | * return: SUCCESS/FAILURE. | |
412 | */ | |
a8c16e8e RM |
413 | static int chcr_ktls_dev_add(struct net_device *netdev, struct sock *sk, |
414 | enum tls_offload_ctx_dir direction, | |
415 | struct tls_crypto_info *crypto_info, | |
416 | u32 start_offload_tcp_sn) | |
34aba2c4 RM |
417 | { |
418 | struct tls_context *tls_ctx = tls_get_ctx(sk); | |
3427e13e | 419 | struct ch_ktls_port_stats_debug *port_stats; |
34aba2c4 | 420 | struct chcr_ktls_ofld_ctx_tx *tx_ctx; |
65e302a9 | 421 | struct chcr_ktls_uld_ctx *u_ctx; |
34aba2c4 RM |
422 | struct chcr_ktls_info *tx_info; |
423 | struct dst_entry *dst; | |
424 | struct adapter *adap; | |
425 | struct port_info *pi; | |
426 | struct neighbour *n; | |
427 | u8 daaddr[16]; | |
428 | int ret = -1; | |
429 | ||
430 | tx_ctx = chcr_get_ktls_tx_context(tls_ctx); | |
431 | ||
432 | pi = netdev_priv(netdev); | |
433 | adap = pi->adapter; | |
3427e13e RM |
434 | port_stats = &adap->ch_ktls_stats.ktls_port[pi->port_id]; |
435 | atomic64_inc(&port_stats->ktls_tx_connection_open); | |
65e302a9 | 436 | u_ctx = adap->uld[CXGB4_ULD_KTLS].handle; |
efca3878 | 437 | |
34aba2c4 RM |
438 | if (direction == TLS_OFFLOAD_CTX_DIR_RX) { |
439 | pr_err("not expecting for RX direction\n"); | |
34aba2c4 RM |
440 | goto out; |
441 | } | |
efca3878 RM |
442 | |
443 | if (tx_ctx->chcr_info) | |
34aba2c4 | 444 | goto out; |
34aba2c4 | 445 | |
65e302a9 AS |
446 | if (u_ctx && u_ctx->detach) |
447 | goto out; | |
448 | ||
34aba2c4 | 449 | tx_info = kvzalloc(sizeof(*tx_info), GFP_KERNEL); |
efca3878 | 450 | if (!tx_info) |
34aba2c4 | 451 | goto out; |
34aba2c4 RM |
452 | |
453 | tx_info->sk = sk; | |
efca3878 | 454 | spin_lock_init(&tx_info->lock); |
34aba2c4 RM |
455 | /* initialize tid and atid to -1, 0 is a also a valid id. */ |
456 | tx_info->tid = -1; | |
457 | tx_info->atid = -1; | |
458 | ||
459 | tx_info->adap = adap; | |
460 | tx_info->netdev = netdev; | |
5a4b9fe7 | 461 | tx_info->first_qset = pi->first_qset; |
34aba2c4 RM |
462 | tx_info->tx_chan = pi->tx_chan; |
463 | tx_info->smt_idx = pi->smt_idx; | |
464 | tx_info->port_id = pi->port_id; | |
efca3878 RM |
465 | tx_info->prev_ack = 0; |
466 | tx_info->prev_win = 0; | |
34aba2c4 RM |
467 | |
468 | tx_info->rx_qid = chcr_get_first_rx_qid(adap); | |
469 | if (unlikely(tx_info->rx_qid < 0)) | |
efca3878 | 470 | goto free_tx_info; |
34aba2c4 RM |
471 | |
472 | tx_info->prev_seq = start_offload_tcp_sn; | |
473 | tx_info->tcp_start_seq_number = start_offload_tcp_sn; | |
474 | ||
8a30923e RM |
475 | /* save crypto keys */ |
476 | ret = chcr_ktls_save_keys(tx_info, crypto_info, direction); | |
477 | if (ret < 0) | |
efca3878 | 478 | goto free_tx_info; |
8a30923e | 479 | |
34aba2c4 | 480 | /* get peer ip */ |
76d7728d | 481 | if (sk->sk_family == AF_INET) { |
34aba2c4 | 482 | memcpy(daaddr, &sk->sk_daddr, 4); |
efca3878 | 483 | tx_info->ip_family = AF_INET; |
76d7728d | 484 | #if IS_ENABLED(CONFIG_IPV6) |
34aba2c4 | 485 | } else { |
81ee0eb6 | 486 | if (!ipv6_only_sock(sk) && |
efca3878 | 487 | ipv6_addr_type(&sk->sk_v6_daddr) == IPV6_ADDR_MAPPED) { |
76d7728d | 488 | memcpy(daaddr, &sk->sk_daddr, 4); |
efca3878 RM |
489 | tx_info->ip_family = AF_INET; |
490 | } else { | |
76d7728d | 491 | memcpy(daaddr, sk->sk_v6_daddr.in6_u.u6_addr8, 16); |
efca3878 RM |
492 | tx_info->ip_family = AF_INET6; |
493 | } | |
76d7728d | 494 | #endif |
34aba2c4 RM |
495 | } |
496 | ||
497 | /* get the l2t index */ | |
498 | dst = sk_dst_get(sk); | |
499 | if (!dst) { | |
500 | pr_err("DST entry not found\n"); | |
efca3878 | 501 | goto free_tx_info; |
34aba2c4 RM |
502 | } |
503 | n = dst_neigh_lookup(dst, daaddr); | |
504 | if (!n || !n->dev) { | |
505 | pr_err("neighbour not found\n"); | |
506 | dst_release(dst); | |
efca3878 | 507 | goto free_tx_info; |
34aba2c4 RM |
508 | } |
509 | tx_info->l2te = cxgb4_l2t_get(adap->l2t, n, n->dev, 0); | |
510 | ||
511 | neigh_release(n); | |
512 | dst_release(dst); | |
513 | ||
514 | if (!tx_info->l2te) { | |
515 | pr_err("l2t entry not found\n"); | |
efca3878 | 516 | goto free_tx_info; |
34aba2c4 RM |
517 | } |
518 | ||
efca3878 RM |
519 | /* Driver shouldn't be removed until any single connection exists */ |
520 | if (!try_module_get(THIS_MODULE)) | |
521 | goto free_l2t; | |
34aba2c4 | 522 | |
efca3878 | 523 | init_completion(&tx_info->completion); |
34aba2c4 RM |
524 | /* create a filter and call cxgb4_l2t_send to send the packet out, which |
525 | * will take care of updating l2t entry in hw if not already done. | |
526 | */ | |
efca3878 | 527 | tx_info->open_state = CH_KTLS_OPEN_PENDING; |
34aba2c4 | 528 | |
efca3878 RM |
529 | if (chcr_setup_connection(sk, tx_info)) |
530 | goto put_module; | |
531 | ||
532 | /* Wait for reply */ | |
533 | wait_for_completion_timeout(&tx_info->completion, 30 * HZ); | |
534 | spin_lock_bh(&tx_info->lock); | |
535 | if (tx_info->open_state) { | |
536 | /* need to wait for hw response, can't free tx_info yet. */ | |
537 | if (tx_info->open_state == CH_KTLS_OPEN_PENDING) | |
538 | tx_info->pending_close = true; | |
cbf3d603 RM |
539 | else |
540 | spin_unlock_bh(&tx_info->lock); | |
541 | /* if in pending close, free the lock after the cleanup */ | |
efca3878 RM |
542 | goto put_module; |
543 | } | |
544 | spin_unlock_bh(&tx_info->lock); | |
545 | ||
546 | /* initialize tcb */ | |
547 | reinit_completion(&tx_info->completion); | |
548 | /* mark it pending for hw response */ | |
549 | tx_info->open_state = CH_KTLS_OPEN_PENDING; | |
550 | ||
551 | if (chcr_init_tcb_fields(tx_info)) | |
552 | goto free_tid; | |
553 | ||
554 | /* Wait for reply */ | |
555 | wait_for_completion_timeout(&tx_info->completion, 30 * HZ); | |
556 | spin_lock_bh(&tx_info->lock); | |
557 | if (tx_info->open_state) { | |
558 | /* need to wait for hw response, can't free tx_info yet. */ | |
559 | tx_info->pending_close = true; | |
560 | /* free the lock after cleanup */ | |
561 | goto free_tid; | |
a3ac249a | 562 | } |
efca3878 RM |
563 | spin_unlock_bh(&tx_info->lock); |
564 | ||
565 | if (!cxgb4_check_l2t_valid(tx_info->l2te)) | |
566 | goto free_tid; | |
567 | ||
3427e13e | 568 | atomic64_inc(&port_stats->ktls_tx_ctx); |
efca3878 | 569 | tx_ctx->chcr_info = tx_info; |
a3ac249a | 570 | |
34aba2c4 | 571 | return 0; |
efca3878 RM |
572 | |
573 | free_tid: | |
efca3878 RM |
574 | #if IS_ENABLED(CONFIG_IPV6) |
575 | /* clear clip entry */ | |
576 | if (tx_info->ip_family == AF_INET6) | |
577 | cxgb4_clip_release(netdev, (const u32 *) | |
578 | &sk->sk_v6_rcv_saddr, | |
579 | 1); | |
580 | #endif | |
581 | cxgb4_remove_tid(&tx_info->adap->tids, tx_info->tx_chan, | |
582 | tx_info->tid, tx_info->ip_family); | |
583 | ||
65e302a9 AS |
584 | xa_erase(&u_ctx->tid_list, tx_info->tid); |
585 | ||
efca3878 RM |
586 | put_module: |
587 | /* release module refcount */ | |
588 | module_put(THIS_MODULE); | |
589 | free_l2t: | |
590 | cxgb4_l2t_release(tx_info->l2te); | |
591 | free_tx_info: | |
592 | if (tx_info->pending_close) | |
593 | spin_unlock_bh(&tx_info->lock); | |
594 | else | |
595 | kvfree(tx_info); | |
34aba2c4 | 596 | out: |
3427e13e | 597 | atomic64_inc(&port_stats->ktls_tx_connection_fail); |
efca3878 | 598 | return -1; |
34aba2c4 RM |
599 | } |
600 | ||
8a30923e RM |
601 | /* |
602 | * chcr_init_tcb_fields: Initialize tcb fields to handle TCP seq number | |
603 | * handling. | |
604 | * @tx_info - driver specific tls info. | |
605 | * return: NET_TX_OK/NET_XMIT_DROP | |
606 | */ | |
607 | static int chcr_init_tcb_fields(struct chcr_ktls_info *tx_info) | |
608 | { | |
609 | int ret = 0; | |
610 | ||
611 | /* set tcb in offload and bypass */ | |
612 | ret = | |
613 | chcr_set_tcb_field(tx_info, TCB_T_FLAGS_W, | |
614 | TCB_T_FLAGS_V(TF_CORE_BYPASS_F | TF_NON_OFFLOAD_F), | |
615 | TCB_T_FLAGS_V(TF_CORE_BYPASS_F), 1); | |
616 | if (ret) | |
617 | return ret; | |
618 | /* reset snd_una and snd_next fields in tcb */ | |
619 | ret = chcr_set_tcb_field(tx_info, TCB_SND_UNA_RAW_W, | |
620 | TCB_SND_NXT_RAW_V(TCB_SND_NXT_RAW_M) | | |
621 | TCB_SND_UNA_RAW_V(TCB_SND_UNA_RAW_M), | |
622 | 0, 1); | |
623 | if (ret) | |
624 | return ret; | |
625 | ||
626 | /* reset send max */ | |
627 | ret = chcr_set_tcb_field(tx_info, TCB_SND_MAX_RAW_W, | |
628 | TCB_SND_MAX_RAW_V(TCB_SND_MAX_RAW_M), | |
629 | 0, 1); | |
630 | if (ret) | |
631 | return ret; | |
632 | ||
633 | /* update l2t index and request for tp reply to confirm tcb is | |
634 | * initialised to handle tx traffic. | |
635 | */ | |
636 | ret = chcr_set_tcb_field(tx_info, TCB_L2T_IX_W, | |
637 | TCB_L2T_IX_V(TCB_L2T_IX_M), | |
638 | TCB_L2T_IX_V(tx_info->l2te->idx), 0); | |
639 | return ret; | |
640 | } | |
641 | ||
642 | /* | |
643 | * chcr_ktls_cpl_act_open_rpl: connection reply received from TP. | |
644 | */ | |
a8c16e8e RM |
645 | static int chcr_ktls_cpl_act_open_rpl(struct adapter *adap, |
646 | unsigned char *input) | |
8a30923e RM |
647 | { |
648 | const struct cpl_act_open_rpl *p = (void *)input; | |
649 | struct chcr_ktls_info *tx_info = NULL; | |
65e302a9 AS |
650 | struct chcr_ktls_ofld_ctx_tx *tx_ctx; |
651 | struct chcr_ktls_uld_ctx *u_ctx; | |
8a30923e | 652 | unsigned int atid, tid, status; |
65e302a9 | 653 | struct tls_context *tls_ctx; |
8a30923e | 654 | struct tid_info *t; |
65e302a9 | 655 | int ret = 0; |
8a30923e RM |
656 | |
657 | tid = GET_TID(p); | |
658 | status = AOPEN_STATUS_G(ntohl(p->atid_status)); | |
659 | atid = TID_TID_G(AOPEN_ATID_G(ntohl(p->atid_status))); | |
660 | ||
661 | t = &adap->tids; | |
662 | tx_info = lookup_atid(t, atid); | |
663 | ||
664 | if (!tx_info || tx_info->atid != atid) { | |
efca3878 | 665 | pr_err("%s: incorrect tx_info or atid\n", __func__); |
8a30923e RM |
666 | return -1; |
667 | } | |
668 | ||
efca3878 RM |
669 | cxgb4_free_atid(t, atid); |
670 | tx_info->atid = -1; | |
671 | ||
672 | spin_lock(&tx_info->lock); | |
673 | /* HW response is very close, finish pending cleanup */ | |
674 | if (tx_info->pending_close) { | |
675 | spin_unlock(&tx_info->lock); | |
676 | if (!status) { | |
efca3878 RM |
677 | cxgb4_remove_tid(&tx_info->adap->tids, tx_info->tx_chan, |
678 | tid, tx_info->ip_family); | |
679 | } | |
680 | kvfree(tx_info); | |
681 | return 0; | |
682 | } | |
683 | ||
8a30923e RM |
684 | if (!status) { |
685 | tx_info->tid = tid; | |
686 | cxgb4_insert_tid(t, tx_info, tx_info->tid, tx_info->ip_family); | |
65e302a9 AS |
687 | /* Adding tid */ |
688 | tls_ctx = tls_get_ctx(tx_info->sk); | |
689 | tx_ctx = chcr_get_ktls_tx_context(tls_ctx); | |
690 | u_ctx = adap->uld[CXGB4_ULD_KTLS].handle; | |
691 | if (u_ctx) { | |
692 | ret = xa_insert_bh(&u_ctx->tid_list, tid, tx_ctx, | |
693 | GFP_NOWAIT); | |
694 | if (ret < 0) { | |
695 | pr_err("%s: Failed to allocate tid XA entry = %d\n", | |
696 | __func__, tx_info->tid); | |
697 | tx_info->open_state = CH_KTLS_OPEN_FAILURE; | |
698 | goto out; | |
699 | } | |
700 | } | |
efca3878 RM |
701 | tx_info->open_state = CH_KTLS_OPEN_SUCCESS; |
702 | } else { | |
703 | tx_info->open_state = CH_KTLS_OPEN_FAILURE; | |
8a30923e | 704 | } |
65e302a9 | 705 | out: |
efca3878 RM |
706 | spin_unlock(&tx_info->lock); |
707 | ||
708 | complete(&tx_info->completion); | |
65e302a9 | 709 | return ret; |
8a30923e RM |
710 | } |
711 | ||
712 | /* | |
713 | * chcr_ktls_cpl_set_tcb_rpl: TCB reply received from TP. | |
714 | */ | |
a8c16e8e | 715 | static int chcr_ktls_cpl_set_tcb_rpl(struct adapter *adap, unsigned char *input) |
8a30923e RM |
716 | { |
717 | const struct cpl_set_tcb_rpl *p = (void *)input; | |
718 | struct chcr_ktls_info *tx_info = NULL; | |
719 | struct tid_info *t; | |
a1dd3875 | 720 | u32 tid; |
8a30923e RM |
721 | |
722 | tid = GET_TID(p); | |
8a30923e RM |
723 | |
724 | t = &adap->tids; | |
725 | tx_info = lookup_tid(t, tid); | |
efca3878 | 726 | |
8a30923e | 727 | if (!tx_info || tx_info->tid != tid) { |
efca3878 | 728 | pr_err("%s: incorrect tx_info or tid\n", __func__); |
8a30923e RM |
729 | return -1; |
730 | } | |
efca3878 RM |
731 | |
732 | spin_lock(&tx_info->lock); | |
733 | if (tx_info->pending_close) { | |
734 | spin_unlock(&tx_info->lock); | |
735 | kvfree(tx_info); | |
736 | return 0; | |
737 | } | |
6f235a69 | 738 | tx_info->open_state = CH_KTLS_OPEN_SUCCESS; |
efca3878 RM |
739 | spin_unlock(&tx_info->lock); |
740 | ||
741 | complete(&tx_info->completion); | |
8a30923e RM |
742 | return 0; |
743 | } | |
5a4b9fe7 | 744 | |
071a43e6 | 745 | static void *__chcr_write_cpl_set_tcb_ulp(struct chcr_ktls_info *tx_info, |
7d01c428 RM |
746 | u32 tid, void *pos, u16 word, |
747 | struct sge_eth_txq *q, u64 mask, | |
5a4b9fe7 RM |
748 | u64 val, u32 reply) |
749 | { | |
750 | struct cpl_set_tcb_field_core *cpl; | |
751 | struct ulptx_idata *idata; | |
752 | struct ulp_txpkt *txpkt; | |
5a4b9fe7 | 753 | |
5a4b9fe7 RM |
754 | /* ULP_TXPKT */ |
755 | txpkt = pos; | |
7d01c428 RM |
756 | txpkt->cmd_dest = htonl(ULPTX_CMD_V(ULP_TX_PKT) | |
757 | ULP_TXPKT_CHANNELID_V(tx_info->port_id) | | |
758 | ULP_TXPKT_FID_V(q->q.cntxt_id) | | |
759 | ULP_TXPKT_RO_F); | |
5a4b9fe7 RM |
760 | txpkt->len = htonl(DIV_ROUND_UP(CHCR_SET_TCB_FIELD_LEN, 16)); |
761 | ||
762 | /* ULPTX_IDATA sub-command */ | |
763 | idata = (struct ulptx_idata *)(txpkt + 1); | |
764 | idata->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM)); | |
765 | idata->len = htonl(sizeof(*cpl)); | |
766 | pos = idata + 1; | |
767 | ||
768 | cpl = pos; | |
769 | /* CPL_SET_TCB_FIELD */ | |
770 | OPCODE_TID(cpl) = htonl(MK_OPCODE_TID(CPL_SET_TCB_FIELD, tid)); | |
771 | cpl->reply_ctrl = htons(QUEUENO_V(tx_info->rx_qid) | | |
772 | NO_REPLY_V(!reply)); | |
773 | cpl->word_cookie = htons(TCB_WORD_V(word)); | |
774 | cpl->mask = cpu_to_be64(mask); | |
775 | cpl->val = cpu_to_be64(val); | |
776 | ||
777 | /* ULPTX_NOOP */ | |
778 | idata = (struct ulptx_idata *)(cpl + 1); | |
779 | idata->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_NOOP)); | |
780 | idata->len = htonl(0); | |
071a43e6 | 781 | pos = idata + 1; |
5a4b9fe7 | 782 | |
071a43e6 AB |
783 | return pos; |
784 | } | |
785 | ||
786 | ||
787 | /* | |
788 | * chcr_write_cpl_set_tcb_ulp: update tcb values. | |
789 | * TCB is responsible to create tcp headers, so all the related values | |
790 | * should be correctly updated. | |
791 | * @tx_info - driver specific tls info. | |
792 | * @q - tx queue on which packet is going out. | |
793 | * @tid - TCB identifier. | |
794 | * @pos - current index where should we start writing. | |
795 | * @word - TCB word. | |
796 | * @mask - TCB word related mask. | |
797 | * @val - TCB word related value. | |
798 | * @reply - set 1 if looking for TP response. | |
799 | * return - next position to write. | |
800 | */ | |
801 | static void *chcr_write_cpl_set_tcb_ulp(struct chcr_ktls_info *tx_info, | |
802 | struct sge_eth_txq *q, u32 tid, | |
803 | void *pos, u16 word, u64 mask, | |
804 | u64 val, u32 reply) | |
805 | { | |
806 | int left = (void *)q->q.stat - pos; | |
807 | ||
808 | if (unlikely(left < CHCR_SET_TCB_FIELD_LEN)) { | |
809 | if (!left) { | |
5a4b9fe7 | 810 | pos = q->q.desc; |
071a43e6 AB |
811 | } else { |
812 | u8 buf[48] = {0}; | |
813 | ||
7d01c428 | 814 | __chcr_write_cpl_set_tcb_ulp(tx_info, tid, buf, word, q, |
071a43e6 AB |
815 | mask, val, reply); |
816 | ||
817 | return chcr_copy_to_txd(buf, &q->q, pos, | |
818 | CHCR_SET_TCB_FIELD_LEN); | |
819 | } | |
5a4b9fe7 RM |
820 | } |
821 | ||
7d01c428 | 822 | pos = __chcr_write_cpl_set_tcb_ulp(tx_info, tid, pos, word, q, |
071a43e6 AB |
823 | mask, val, reply); |
824 | ||
825 | /* check again if we are at the end of the queue */ | |
826 | if (left == CHCR_SET_TCB_FIELD_LEN) | |
827 | pos = q->q.desc; | |
828 | ||
5a4b9fe7 RM |
829 | return pos; |
830 | } | |
831 | ||
832 | /* | |
833 | * chcr_ktls_xmit_tcb_cpls: update tcb entry so that TP will create the header | |
834 | * with updated values like tcp seq, ack, window etc. | |
835 | * @tx_info - driver specific tls info. | |
836 | * @q - TX queue. | |
837 | * @tcp_seq | |
838 | * @tcp_ack | |
839 | * @tcp_win | |
840 | * return: NETDEV_TX_BUSY/NET_TX_OK. | |
841 | */ | |
842 | static int chcr_ktls_xmit_tcb_cpls(struct chcr_ktls_info *tx_info, | |
843 | struct sge_eth_txq *q, u64 tcp_seq, | |
63ee4591 | 844 | u64 tcp_ack, u64 tcp_win, bool offset) |
5a4b9fe7 RM |
845 | { |
846 | bool first_wr = ((tx_info->prev_ack == 0) && (tx_info->prev_win == 0)); | |
3427e13e | 847 | struct ch_ktls_port_stats_debug *port_stats; |
83a95df0 | 848 | u32 len, cpl = 0, ndesc, wr_len, wr_mid = 0; |
5a4b9fe7 RM |
849 | struct fw_ulptx_wr *wr; |
850 | int credits; | |
851 | void *pos; | |
852 | ||
853 | wr_len = sizeof(*wr); | |
854 | /* there can be max 4 cpls, check if we have enough credits */ | |
855 | len = wr_len + 4 * roundup(CHCR_SET_TCB_FIELD_LEN, 16); | |
856 | ndesc = DIV_ROUND_UP(len, 64); | |
857 | ||
858 | credits = chcr_txq_avail(&q->q) - ndesc; | |
859 | if (unlikely(credits < 0)) { | |
860 | chcr_eth_txq_stop(q); | |
861 | return NETDEV_TX_BUSY; | |
862 | } | |
863 | ||
83a95df0 RM |
864 | if (unlikely(credits < ETHTXQ_STOP_THRES)) { |
865 | chcr_eth_txq_stop(q); | |
866 | wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F; | |
867 | } | |
868 | ||
5a4b9fe7 RM |
869 | pos = &q->q.desc[q->q.pidx]; |
870 | /* make space for WR, we'll fill it later when we know all the cpls | |
871 | * being sent out and have complete length. | |
872 | */ | |
873 | wr = pos; | |
874 | pos += wr_len; | |
875 | /* update tx_max if its a re-transmit or the first wr */ | |
876 | if (first_wr || tcp_seq != tx_info->prev_seq) { | |
877 | pos = chcr_write_cpl_set_tcb_ulp(tx_info, q, tx_info->tid, pos, | |
878 | TCB_TX_MAX_W, | |
879 | TCB_TX_MAX_V(TCB_TX_MAX_M), | |
880 | TCB_TX_MAX_V(tcp_seq), 0); | |
881 | cpl++; | |
882 | } | |
883 | /* reset snd una if it's a re-transmit pkt */ | |
63ee4591 | 884 | if (tcp_seq != tx_info->prev_seq || offset) { |
5a4b9fe7 | 885 | /* reset snd_una */ |
3427e13e RM |
886 | port_stats = |
887 | &tx_info->adap->ch_ktls_stats.ktls_port[tx_info->port_id]; | |
5a4b9fe7 RM |
888 | pos = chcr_write_cpl_set_tcb_ulp(tx_info, q, tx_info->tid, pos, |
889 | TCB_SND_UNA_RAW_W, | |
890 | TCB_SND_UNA_RAW_V | |
891 | (TCB_SND_UNA_RAW_M), | |
892 | TCB_SND_UNA_RAW_V(0), 0); | |
63ee4591 RM |
893 | if (tcp_seq != tx_info->prev_seq) |
894 | atomic64_inc(&port_stats->ktls_tx_ooo); | |
5a4b9fe7 RM |
895 | cpl++; |
896 | } | |
897 | /* update ack */ | |
898 | if (first_wr || tx_info->prev_ack != tcp_ack) { | |
899 | pos = chcr_write_cpl_set_tcb_ulp(tx_info, q, tx_info->tid, pos, | |
900 | TCB_RCV_NXT_W, | |
901 | TCB_RCV_NXT_V(TCB_RCV_NXT_M), | |
902 | TCB_RCV_NXT_V(tcp_ack), 0); | |
903 | tx_info->prev_ack = tcp_ack; | |
904 | cpl++; | |
905 | } | |
906 | /* update receive window */ | |
907 | if (first_wr || tx_info->prev_win != tcp_win) { | |
bf7d20cd JC |
908 | chcr_write_cpl_set_tcb_ulp(tx_info, q, tx_info->tid, pos, |
909 | TCB_RCV_WND_W, | |
910 | TCB_RCV_WND_V(TCB_RCV_WND_M), | |
911 | TCB_RCV_WND_V(tcp_win), 0); | |
5a4b9fe7 RM |
912 | tx_info->prev_win = tcp_win; |
913 | cpl++; | |
914 | } | |
915 | ||
916 | if (cpl) { | |
917 | /* get the actual length */ | |
918 | len = wr_len + cpl * roundup(CHCR_SET_TCB_FIELD_LEN, 16); | |
919 | /* ULPTX wr */ | |
920 | wr->op_to_compl = htonl(FW_WR_OP_V(FW_ULPTX_WR)); | |
921 | wr->cookie = 0; | |
922 | /* fill len in wr field */ | |
83a95df0 RM |
923 | wr->flowid_len16 = htonl(wr_mid | |
924 | FW_WR_LEN16_V(DIV_ROUND_UP(len, 16))); | |
5a4b9fe7 RM |
925 | |
926 | ndesc = DIV_ROUND_UP(len, 64); | |
927 | chcr_txq_advance(&q->q, ndesc); | |
928 | cxgb4_ring_tx_db(tx_info->adap, &q->q, ndesc); | |
929 | } | |
930 | return 0; | |
931 | } | |
932 | ||
5a4b9fe7 RM |
933 | /* |
934 | * chcr_ktls_get_tx_flits | |
935 | * returns number of flits to be sent out, it includes key context length, WR | |
936 | * size and skb fragments. | |
937 | */ | |
938 | static unsigned int | |
687823d2 | 939 | chcr_ktls_get_tx_flits(u32 nr_frags, unsigned int key_ctx_len) |
5a4b9fe7 | 940 | { |
687823d2 | 941 | return chcr_sgl_len(nr_frags) + |
5a4b9fe7 RM |
942 | DIV_ROUND_UP(key_ctx_len + CHCR_KTLS_WR_SIZE, 8); |
943 | } | |
944 | ||
429765a1 | 945 | /* |
a4813dc7 | 946 | * chcr_ktls_check_tcp_options: To check if there is any TCP option available |
429765a1 RM |
947 | * other than timestamp. |
948 | * @skb - skb contains partial record.. | |
949 | * return: 1 / 0 | |
950 | */ | |
951 | static int | |
952 | chcr_ktls_check_tcp_options(struct tcphdr *tcp) | |
953 | { | |
954 | int cnt, opt, optlen; | |
955 | u_char *cp; | |
956 | ||
957 | cp = (u_char *)(tcp + 1); | |
958 | cnt = (tcp->doff << 2) - sizeof(struct tcphdr); | |
959 | for (; cnt > 0; cnt -= optlen, cp += optlen) { | |
960 | opt = cp[0]; | |
961 | if (opt == TCPOPT_EOL) | |
962 | break; | |
963 | if (opt == TCPOPT_NOP) { | |
964 | optlen = 1; | |
965 | } else { | |
966 | if (cnt < 2) | |
967 | break; | |
968 | optlen = cp[1]; | |
969 | if (optlen < 2 || optlen > cnt) | |
970 | break; | |
971 | } | |
972 | switch (opt) { | |
973 | case TCPOPT_NOP: | |
974 | break; | |
975 | default: | |
976 | return 1; | |
977 | } | |
978 | } | |
979 | return 0; | |
980 | } | |
981 | ||
982 | /* | |
983 | * chcr_ktls_write_tcp_options : TP can't send out all the options, we need to | |
984 | * send out separately. | |
985 | * @tx_info - driver specific tls info. | |
986 | * @skb - skb contains partial record.. | |
987 | * @q - TX queue. | |
988 | * @tx_chan - channel number. | |
989 | * return: NETDEV_TX_OK/NETDEV_TX_BUSY. | |
990 | */ | |
991 | static int | |
992 | chcr_ktls_write_tcp_options(struct chcr_ktls_info *tx_info, struct sk_buff *skb, | |
993 | struct sge_eth_txq *q, uint32_t tx_chan) | |
994 | { | |
995 | struct fw_eth_tx_pkt_wr *wr; | |
996 | struct cpl_tx_pkt_core *cpl; | |
997 | u32 ctrl, iplen, maclen; | |
998 | struct ipv6hdr *ip6; | |
999 | unsigned int ndesc; | |
1000 | struct tcphdr *tcp; | |
1001 | int len16, pktlen; | |
1002 | struct iphdr *ip; | |
83a95df0 | 1003 | u32 wr_mid = 0; |
429765a1 RM |
1004 | int credits; |
1005 | u8 buf[150]; | |
86716b51 | 1006 | u64 cntrl1; |
429765a1 RM |
1007 | void *pos; |
1008 | ||
1009 | iplen = skb_network_header_len(skb); | |
1010 | maclen = skb_mac_header_len(skb); | |
1011 | ||
1012 | /* packet length = eth hdr len + ip hdr len + tcp hdr len | |
1013 | * (including options). | |
1014 | */ | |
504148fe | 1015 | pktlen = skb_tcp_all_headers(skb); |
429765a1 RM |
1016 | |
1017 | ctrl = sizeof(*cpl) + pktlen; | |
1018 | len16 = DIV_ROUND_UP(sizeof(*wr) + ctrl, 16); | |
1019 | /* check how many descriptors needed */ | |
1020 | ndesc = DIV_ROUND_UP(len16, 4); | |
1021 | ||
1022 | credits = chcr_txq_avail(&q->q) - ndesc; | |
1023 | if (unlikely(credits < 0)) { | |
1024 | chcr_eth_txq_stop(q); | |
1025 | return NETDEV_TX_BUSY; | |
1026 | } | |
1027 | ||
83a95df0 RM |
1028 | if (unlikely(credits < ETHTXQ_STOP_THRES)) { |
1029 | chcr_eth_txq_stop(q); | |
1030 | wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F; | |
1031 | } | |
1032 | ||
429765a1 RM |
1033 | pos = &q->q.desc[q->q.pidx]; |
1034 | wr = pos; | |
1035 | ||
1036 | /* Firmware work request header */ | |
1037 | wr->op_immdlen = htonl(FW_WR_OP_V(FW_ETH_TX_PKT_WR) | | |
1038 | FW_WR_IMMDLEN_V(ctrl)); | |
1039 | ||
83a95df0 | 1040 | wr->equiq_to_len16 = htonl(wr_mid | FW_WR_LEN16_V(len16)); |
429765a1 RM |
1041 | wr->r3 = 0; |
1042 | ||
1043 | cpl = (void *)(wr + 1); | |
1044 | ||
1045 | /* CPL header */ | |
1046 | cpl->ctrl0 = htonl(TXPKT_OPCODE_V(CPL_TX_PKT) | TXPKT_INTF_V(tx_chan) | | |
1047 | TXPKT_PF_V(tx_info->adap->pf)); | |
1048 | cpl->pack = 0; | |
1049 | cpl->len = htons(pktlen); | |
429765a1 RM |
1050 | |
1051 | memcpy(buf, skb->data, pktlen); | |
a54ba346 | 1052 | if (!IS_ENABLED(CONFIG_IPV6) || tx_info->ip_family == AF_INET) { |
429765a1 RM |
1053 | /* we need to correct ip header len */ |
1054 | ip = (struct iphdr *)(buf + maclen); | |
1055 | ip->tot_len = htons(pktlen - maclen); | |
86716b51 | 1056 | cntrl1 = TXPKT_CSUM_TYPE_V(TX_CSUM_TCPIP); |
429765a1 RM |
1057 | } else { |
1058 | ip6 = (struct ipv6hdr *)(buf + maclen); | |
e14394e6 | 1059 | ip6->payload_len = htons(pktlen - maclen - iplen); |
86716b51 | 1060 | cntrl1 = TXPKT_CSUM_TYPE_V(TX_CSUM_TCPIP6); |
429765a1 | 1061 | } |
86716b51 RM |
1062 | |
1063 | cntrl1 |= T6_TXPKT_ETHHDR_LEN_V(maclen - ETH_HLEN) | | |
1064 | TXPKT_IPHDR_LEN_V(iplen); | |
1065 | /* checksum offload */ | |
1066 | cpl->ctrl1 = cpu_to_be64(cntrl1); | |
1067 | ||
1068 | pos = cpl + 1; | |
1069 | ||
429765a1 RM |
1070 | /* now take care of the tcp header, if fin is not set then clear push |
1071 | * bit as well, and if fin is set, it will be sent at the last so we | |
1072 | * need to update the tcp sequence number as per the last packet. | |
1073 | */ | |
1074 | tcp = (struct tcphdr *)(buf + maclen + iplen); | |
1075 | ||
1076 | if (!tcp->fin) | |
1077 | tcp->psh = 0; | |
1078 | else | |
1079 | tcp->seq = htonl(tx_info->prev_seq); | |
1080 | ||
1081 | chcr_copy_to_txd(buf, &q->q, pos, pktlen); | |
1082 | ||
1083 | chcr_txq_advance(&q->q, ndesc); | |
1084 | cxgb4_ring_tx_db(tx_info->adap, &q->q, ndesc); | |
1085 | return 0; | |
1086 | } | |
1087 | ||
5a4b9fe7 RM |
1088 | /* |
1089 | * chcr_ktls_xmit_wr_complete: This sends out the complete record. If an skb | |
1090 | * received has partial end part of the record, send out the complete record, so | |
1091 | * that crypto block will be able to generate TAG/HASH. | |
1092 | * @skb - segment which has complete or partial end part. | |
1093 | * @tx_info - driver specific tls info. | |
1094 | * @q - TX queue. | |
1095 | * @tcp_seq | |
1096 | * @tcp_push - tcp push bit. | |
1097 | * @mss - segment size. | |
1098 | * return: NETDEV_TX_BUSY/NET_TX_OK. | |
1099 | */ | |
1100 | static int chcr_ktls_xmit_wr_complete(struct sk_buff *skb, | |
1101 | struct chcr_ktls_info *tx_info, | |
1102 | struct sge_eth_txq *q, u32 tcp_seq, | |
687823d2 RM |
1103 | bool is_last_wr, u32 data_len, |
1104 | u32 skb_offset, u32 nfrags, | |
5a4b9fe7 RM |
1105 | bool tcp_push, u32 mss) |
1106 | { | |
1107 | u32 len16, wr_mid = 0, flits = 0, ndesc, cipher_start; | |
1108 | struct adapter *adap = tx_info->adap; | |
1109 | int credits, left, last_desc; | |
1110 | struct tx_sw_desc *sgl_sdesc; | |
1111 | struct cpl_tx_data *tx_data; | |
1112 | struct cpl_tx_sec_pdu *cpl; | |
1113 | struct ulptx_idata *idata; | |
1114 | struct ulp_txpkt *ulptx; | |
1115 | struct fw_ulptx_wr *wr; | |
1116 | void *pos; | |
1117 | u64 *end; | |
1118 | ||
1119 | /* get the number of flits required */ | |
687823d2 | 1120 | flits = chcr_ktls_get_tx_flits(nfrags, tx_info->key_ctx_len); |
5a4b9fe7 RM |
1121 | /* number of descriptors */ |
1122 | ndesc = chcr_flits_to_desc(flits); | |
1123 | /* check if enough credits available */ | |
1124 | credits = chcr_txq_avail(&q->q) - ndesc; | |
1125 | if (unlikely(credits < 0)) { | |
1126 | chcr_eth_txq_stop(q); | |
1127 | return NETDEV_TX_BUSY; | |
1128 | } | |
1129 | ||
1130 | if (unlikely(credits < ETHTXQ_STOP_THRES)) { | |
a4813dc7 | 1131 | /* Credits are below the threshold values, stop the queue after |
5a4b9fe7 RM |
1132 | * injecting the Work Request for this packet. |
1133 | */ | |
1134 | chcr_eth_txq_stop(q); | |
1135 | wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F; | |
1136 | } | |
1137 | ||
1138 | last_desc = q->q.pidx + ndesc - 1; | |
1139 | if (last_desc >= q->q.size) | |
1140 | last_desc -= q->q.size; | |
1141 | sgl_sdesc = &q->q.sdesc[last_desc]; | |
1142 | ||
1143 | if (unlikely(cxgb4_map_skb(adap->pdev_dev, skb, sgl_sdesc->addr) < 0)) { | |
1144 | memset(sgl_sdesc->addr, 0, sizeof(sgl_sdesc->addr)); | |
1145 | q->mapping_err++; | |
1146 | return NETDEV_TX_BUSY; | |
1147 | } | |
1148 | ||
687823d2 RM |
1149 | if (!is_last_wr) |
1150 | skb_get(skb); | |
1151 | ||
5a4b9fe7 RM |
1152 | pos = &q->q.desc[q->q.pidx]; |
1153 | end = (u64 *)pos + flits; | |
1154 | /* FW_ULPTX_WR */ | |
1155 | wr = pos; | |
1156 | /* WR will need len16 */ | |
1157 | len16 = DIV_ROUND_UP(flits, 2); | |
1158 | wr->op_to_compl = htonl(FW_WR_OP_V(FW_ULPTX_WR)); | |
1159 | wr->flowid_len16 = htonl(wr_mid | FW_WR_LEN16_V(len16)); | |
1160 | wr->cookie = 0; | |
1161 | pos += sizeof(*wr); | |
1162 | /* ULP_TXPKT */ | |
1163 | ulptx = pos; | |
1164 | ulptx->cmd_dest = htonl(ULPTX_CMD_V(ULP_TX_PKT) | | |
1165 | ULP_TXPKT_CHANNELID_V(tx_info->port_id) | | |
1166 | ULP_TXPKT_FID_V(q->q.cntxt_id) | | |
1167 | ULP_TXPKT_RO_F); | |
1168 | ulptx->len = htonl(len16 - 1); | |
1169 | /* ULPTX_IDATA sub-command */ | |
1170 | idata = (struct ulptx_idata *)(ulptx + 1); | |
1171 | idata->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM) | ULP_TX_SC_MORE_F); | |
1172 | /* idata length will include cpl_tx_sec_pdu + key context size + | |
1173 | * cpl_tx_data header. | |
1174 | */ | |
1175 | idata->len = htonl(sizeof(*cpl) + tx_info->key_ctx_len + | |
1176 | sizeof(*tx_data)); | |
1177 | /* SEC CPL */ | |
1178 | cpl = (struct cpl_tx_sec_pdu *)(idata + 1); | |
1179 | cpl->op_ivinsrtofst = | |
1180 | htonl(CPL_TX_SEC_PDU_OPCODE_V(CPL_TX_SEC_PDU) | | |
1181 | CPL_TX_SEC_PDU_CPLLEN_V(CHCR_CPL_TX_SEC_PDU_LEN_64BIT) | | |
1182 | CPL_TX_SEC_PDU_PLACEHOLDER_V(1) | | |
1183 | CPL_TX_SEC_PDU_IVINSRTOFST_V(TLS_HEADER_SIZE + 1)); | |
687823d2 | 1184 | cpl->pldlen = htonl(data_len); |
5a4b9fe7 RM |
1185 | |
1186 | /* encryption should start after tls header size + iv size */ | |
1187 | cipher_start = TLS_HEADER_SIZE + tx_info->iv_size + 1; | |
1188 | ||
1189 | cpl->aadstart_cipherstop_hi = | |
1190 | htonl(CPL_TX_SEC_PDU_AADSTART_V(1) | | |
1191 | CPL_TX_SEC_PDU_AADSTOP_V(TLS_HEADER_SIZE) | | |
1192 | CPL_TX_SEC_PDU_CIPHERSTART_V(cipher_start)); | |
1193 | ||
1194 | /* authentication will also start after tls header + iv size */ | |
1195 | cpl->cipherstop_lo_authinsert = | |
1196 | htonl(CPL_TX_SEC_PDU_AUTHSTART_V(cipher_start) | | |
1197 | CPL_TX_SEC_PDU_AUTHSTOP_V(TLS_CIPHER_AES_GCM_128_TAG_SIZE) | | |
1198 | CPL_TX_SEC_PDU_AUTHINSERT_V(TLS_CIPHER_AES_GCM_128_TAG_SIZE)); | |
1199 | ||
1200 | /* These two flits are actually a CPL_TLS_TX_SCMD_FMT. */ | |
1201 | cpl->seqno_numivs = htonl(tx_info->scmd0_seqno_numivs); | |
1202 | cpl->ivgen_hdrlen = htonl(tx_info->scmd0_ivgen_hdrlen); | |
1203 | cpl->scmd1 = cpu_to_be64(tx_info->record_no); | |
1204 | ||
1205 | pos = cpl + 1; | |
1206 | /* check if space left to fill the keys */ | |
1207 | left = (void *)q->q.stat - pos; | |
1208 | if (!left) { | |
1209 | left = (void *)end - (void *)q->q.stat; | |
1210 | pos = q->q.desc; | |
1211 | end = pos + left; | |
1212 | } | |
1213 | ||
1214 | pos = chcr_copy_to_txd(&tx_info->key_ctx, &q->q, pos, | |
1215 | tx_info->key_ctx_len); | |
1216 | left = (void *)q->q.stat - pos; | |
1217 | ||
1218 | if (!left) { | |
1219 | left = (void *)end - (void *)q->q.stat; | |
1220 | pos = q->q.desc; | |
1221 | end = pos + left; | |
1222 | } | |
1223 | /* CPL_TX_DATA */ | |
1224 | tx_data = (void *)pos; | |
1225 | OPCODE_TID(tx_data) = htonl(MK_OPCODE_TID(CPL_TX_DATA, tx_info->tid)); | |
687823d2 | 1226 | tx_data->len = htonl(TX_DATA_MSS_V(mss) | TX_LENGTH_V(data_len)); |
5a4b9fe7 RM |
1227 | |
1228 | tx_data->rsvd = htonl(tcp_seq); | |
1229 | ||
1230 | tx_data->flags = htonl(TX_BYPASS_F); | |
1231 | if (tcp_push) | |
1232 | tx_data->flags |= htonl(TX_PUSH_F | TX_SHOVE_F); | |
1233 | ||
1234 | /* check left again, it might go beyond queue limit */ | |
1235 | pos = tx_data + 1; | |
1236 | left = (void *)q->q.stat - pos; | |
1237 | ||
1238 | /* check the position again */ | |
1239 | if (!left) { | |
1240 | left = (void *)end - (void *)q->q.stat; | |
1241 | pos = q->q.desc; | |
1242 | end = pos + left; | |
1243 | } | |
1244 | ||
1245 | /* send the complete packet except the header */ | |
687823d2 RM |
1246 | cxgb4_write_partial_sgl(skb, &q->q, pos, end, sgl_sdesc->addr, |
1247 | skb_offset, data_len); | |
5a4b9fe7 RM |
1248 | sgl_sdesc->skb = skb; |
1249 | ||
1250 | chcr_txq_advance(&q->q, ndesc); | |
1251 | cxgb4_ring_tx_db(adap, &q->q, ndesc); | |
a8c16e8e | 1252 | atomic64_inc(&adap->ch_ktls_stats.ktls_tx_send_records); |
5a4b9fe7 RM |
1253 | |
1254 | return 0; | |
1255 | } | |
1256 | ||
dc05f3df RM |
1257 | /* |
1258 | * chcr_ktls_xmit_wr_short: This is to send out partial records. If its | |
1259 | * a middle part of a record, fetch the prior data to make it 16 byte aligned | |
1260 | * and then only send it out. | |
1261 | * | |
1262 | * @skb - skb contains partial record.. | |
1263 | * @tx_info - driver specific tls info. | |
1264 | * @q - TX queue. | |
1265 | * @tcp_seq | |
1266 | * @tcp_push - tcp push bit. | |
1267 | * @mss - segment size. | |
1268 | * @tls_rec_offset - offset from start of the tls record. | |
1269 | * @perior_data - data before the current segment, required to make this record | |
1270 | * 16 byte aligned. | |
1271 | * @prior_data_len - prior_data length (less than 16) | |
1272 | * return: NETDEV_TX_BUSY/NET_TX_OK. | |
1273 | */ | |
1274 | static int chcr_ktls_xmit_wr_short(struct sk_buff *skb, | |
1275 | struct chcr_ktls_info *tx_info, | |
1276 | struct sge_eth_txq *q, | |
1277 | u32 tcp_seq, bool tcp_push, u32 mss, | |
1278 | u32 tls_rec_offset, u8 *prior_data, | |
687823d2 RM |
1279 | u32 prior_data_len, u32 data_len, |
1280 | u32 skb_offset) | |
dc05f3df | 1281 | { |
687823d2 | 1282 | u32 len16, wr_mid = 0, cipher_start, nfrags; |
dc05f3df | 1283 | struct adapter *adap = tx_info->adap; |
dc05f3df RM |
1284 | unsigned int flits = 0, ndesc; |
1285 | int credits, left, last_desc; | |
1286 | struct tx_sw_desc *sgl_sdesc; | |
1287 | struct cpl_tx_data *tx_data; | |
1288 | struct cpl_tx_sec_pdu *cpl; | |
1289 | struct ulptx_idata *idata; | |
1290 | struct ulp_txpkt *ulptx; | |
1291 | struct fw_ulptx_wr *wr; | |
1292 | __be64 iv_record; | |
1293 | void *pos; | |
1294 | u64 *end; | |
1295 | ||
687823d2 | 1296 | nfrags = chcr_get_nfrags_to_send(skb, skb_offset, data_len); |
dc05f3df RM |
1297 | /* get the number of flits required, it's a partial record so 2 flits |
1298 | * (AES_BLOCK_SIZE) will be added. | |
1299 | */ | |
687823d2 | 1300 | flits = chcr_ktls_get_tx_flits(nfrags, tx_info->key_ctx_len) + 2; |
dc05f3df RM |
1301 | /* get the correct 8 byte IV of this record */ |
1302 | iv_record = cpu_to_be64(tx_info->iv + tx_info->record_no); | |
1303 | /* If it's a middle record and not 16 byte aligned to run AES CTR, need | |
1304 | * to make it 16 byte aligned. So atleadt 2 extra flits of immediate | |
1305 | * data will be added. | |
1306 | */ | |
1307 | if (prior_data_len) | |
1308 | flits += 2; | |
1309 | /* number of descriptors */ | |
1310 | ndesc = chcr_flits_to_desc(flits); | |
1311 | /* check if enough credits available */ | |
1312 | credits = chcr_txq_avail(&q->q) - ndesc; | |
1313 | if (unlikely(credits < 0)) { | |
1314 | chcr_eth_txq_stop(q); | |
1315 | return NETDEV_TX_BUSY; | |
1316 | } | |
1317 | ||
1318 | if (unlikely(credits < ETHTXQ_STOP_THRES)) { | |
1319 | chcr_eth_txq_stop(q); | |
1320 | wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F; | |
1321 | } | |
1322 | ||
1323 | last_desc = q->q.pidx + ndesc - 1; | |
1324 | if (last_desc >= q->q.size) | |
1325 | last_desc -= q->q.size; | |
1326 | sgl_sdesc = &q->q.sdesc[last_desc]; | |
1327 | ||
1328 | if (unlikely(cxgb4_map_skb(adap->pdev_dev, skb, sgl_sdesc->addr) < 0)) { | |
1329 | memset(sgl_sdesc->addr, 0, sizeof(sgl_sdesc->addr)); | |
1330 | q->mapping_err++; | |
1331 | return NETDEV_TX_BUSY; | |
1332 | } | |
1333 | ||
1334 | pos = &q->q.desc[q->q.pidx]; | |
1335 | end = (u64 *)pos + flits; | |
1336 | /* FW_ULPTX_WR */ | |
1337 | wr = pos; | |
1338 | /* WR will need len16 */ | |
1339 | len16 = DIV_ROUND_UP(flits, 2); | |
1340 | wr->op_to_compl = htonl(FW_WR_OP_V(FW_ULPTX_WR)); | |
1341 | wr->flowid_len16 = htonl(wr_mid | FW_WR_LEN16_V(len16)); | |
1342 | wr->cookie = 0; | |
1343 | pos += sizeof(*wr); | |
1344 | /* ULP_TXPKT */ | |
1345 | ulptx = pos; | |
1346 | ulptx->cmd_dest = htonl(ULPTX_CMD_V(ULP_TX_PKT) | | |
1347 | ULP_TXPKT_CHANNELID_V(tx_info->port_id) | | |
1348 | ULP_TXPKT_FID_V(q->q.cntxt_id) | | |
1349 | ULP_TXPKT_RO_F); | |
1350 | ulptx->len = htonl(len16 - 1); | |
1351 | /* ULPTX_IDATA sub-command */ | |
1352 | idata = (struct ulptx_idata *)(ulptx + 1); | |
1353 | idata->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM) | ULP_TX_SC_MORE_F); | |
1354 | /* idata length will include cpl_tx_sec_pdu + key context size + | |
1355 | * cpl_tx_data header. | |
1356 | */ | |
1357 | idata->len = htonl(sizeof(*cpl) + tx_info->key_ctx_len + | |
1358 | sizeof(*tx_data) + AES_BLOCK_LEN + prior_data_len); | |
1359 | /* SEC CPL */ | |
1360 | cpl = (struct cpl_tx_sec_pdu *)(idata + 1); | |
1361 | /* cipher start will have tls header + iv size extra if its a header | |
1362 | * part of tls record. else only 16 byte IV will be added. | |
1363 | */ | |
1364 | cipher_start = | |
1365 | AES_BLOCK_LEN + 1 + | |
1366 | (!tls_rec_offset ? TLS_HEADER_SIZE + tx_info->iv_size : 0); | |
1367 | ||
1368 | cpl->op_ivinsrtofst = | |
1369 | htonl(CPL_TX_SEC_PDU_OPCODE_V(CPL_TX_SEC_PDU) | | |
1370 | CPL_TX_SEC_PDU_CPLLEN_V(CHCR_CPL_TX_SEC_PDU_LEN_64BIT) | | |
1371 | CPL_TX_SEC_PDU_IVINSRTOFST_V(1)); | |
687823d2 | 1372 | cpl->pldlen = htonl(data_len + AES_BLOCK_LEN + prior_data_len); |
dc05f3df RM |
1373 | cpl->aadstart_cipherstop_hi = |
1374 | htonl(CPL_TX_SEC_PDU_CIPHERSTART_V(cipher_start)); | |
1375 | cpl->cipherstop_lo_authinsert = 0; | |
1376 | /* These two flits are actually a CPL_TLS_TX_SCMD_FMT. */ | |
1377 | cpl->seqno_numivs = htonl(tx_info->scmd0_short_seqno_numivs); | |
1378 | cpl->ivgen_hdrlen = htonl(tx_info->scmd0_short_ivgen_hdrlen); | |
1379 | cpl->scmd1 = 0; | |
1380 | ||
1381 | pos = cpl + 1; | |
1382 | /* check if space left to fill the keys */ | |
1383 | left = (void *)q->q.stat - pos; | |
1384 | if (!left) { | |
1385 | left = (void *)end - (void *)q->q.stat; | |
1386 | pos = q->q.desc; | |
1387 | end = pos + left; | |
1388 | } | |
1389 | ||
1390 | pos = chcr_copy_to_txd(&tx_info->key_ctx, &q->q, pos, | |
1391 | tx_info->key_ctx_len); | |
1392 | left = (void *)q->q.stat - pos; | |
1393 | ||
1394 | if (!left) { | |
1395 | left = (void *)end - (void *)q->q.stat; | |
1396 | pos = q->q.desc; | |
1397 | end = pos + left; | |
1398 | } | |
1399 | /* CPL_TX_DATA */ | |
1400 | tx_data = (void *)pos; | |
1401 | OPCODE_TID(tx_data) = htonl(MK_OPCODE_TID(CPL_TX_DATA, tx_info->tid)); | |
1402 | tx_data->len = htonl(TX_DATA_MSS_V(mss) | | |
687823d2 | 1403 | TX_LENGTH_V(data_len + prior_data_len)); |
dc05f3df RM |
1404 | tx_data->rsvd = htonl(tcp_seq); |
1405 | tx_data->flags = htonl(TX_BYPASS_F); | |
1406 | if (tcp_push) | |
1407 | tx_data->flags |= htonl(TX_PUSH_F | TX_SHOVE_F); | |
1408 | ||
1409 | /* check left again, it might go beyond queue limit */ | |
1410 | pos = tx_data + 1; | |
1411 | left = (void *)q->q.stat - pos; | |
1412 | ||
1413 | /* check the position again */ | |
1414 | if (!left) { | |
1415 | left = (void *)end - (void *)q->q.stat; | |
1416 | pos = q->q.desc; | |
1417 | end = pos + left; | |
1418 | } | |
1419 | /* copy the 16 byte IV for AES-CTR, which includes 4 bytes of salt, 8 | |
1420 | * bytes of actual IV and 4 bytes of 16 byte-sequence. | |
1421 | */ | |
1422 | memcpy(pos, tx_info->key_ctx.salt, tx_info->salt_size); | |
1423 | memcpy(pos + tx_info->salt_size, &iv_record, tx_info->iv_size); | |
1424 | *(__be32 *)(pos + tx_info->salt_size + tx_info->iv_size) = | |
1425 | htonl(2 + (tls_rec_offset ? ((tls_rec_offset - | |
1426 | (TLS_HEADER_SIZE + tx_info->iv_size)) / AES_BLOCK_LEN) : 0)); | |
1427 | ||
1428 | pos += 16; | |
1429 | /* Prior_data_len will always be less than 16 bytes, fill the | |
1430 | * prio_data_len after AES_CTRL_BLOCK and clear the remaining length | |
1431 | * to 0. | |
1432 | */ | |
1433 | if (prior_data_len) | |
1434 | pos = chcr_copy_to_txd(prior_data, &q->q, pos, 16); | |
1435 | /* send the complete packet except the header */ | |
687823d2 RM |
1436 | cxgb4_write_partial_sgl(skb, &q->q, pos, end, sgl_sdesc->addr, |
1437 | skb_offset, data_len); | |
dc05f3df RM |
1438 | sgl_sdesc->skb = skb; |
1439 | ||
1440 | chcr_txq_advance(&q->q, ndesc); | |
1441 | cxgb4_ring_tx_db(adap, &q->q, ndesc); | |
1442 | ||
1443 | return 0; | |
1444 | } | |
1445 | ||
1446 | /* | |
1447 | * chcr_ktls_tx_plaintxt: This handler will take care of the records which has | |
1448 | * only plain text (only tls header and iv) | |
1449 | * @tx_info - driver specific tls info. | |
1450 | * @skb - skb contains partial record.. | |
1451 | * @tcp_seq | |
1452 | * @mss - segment size. | |
1453 | * @tcp_push - tcp push bit. | |
1454 | * @q - TX queue. | |
1455 | * @port_id : port number | |
1456 | * @perior_data - data before the current segment, required to make this record | |
1457 | * 16 byte aligned. | |
1458 | * @prior_data_len - prior_data length (less than 16) | |
1459 | * return: NETDEV_TX_BUSY/NET_TX_OK. | |
1460 | */ | |
1461 | static int chcr_ktls_tx_plaintxt(struct chcr_ktls_info *tx_info, | |
1462 | struct sk_buff *skb, u32 tcp_seq, u32 mss, | |
1463 | bool tcp_push, struct sge_eth_txq *q, | |
1464 | u32 port_id, u8 *prior_data, | |
687823d2 | 1465 | u32 data_len, u32 skb_offset, |
dc05f3df RM |
1466 | u32 prior_data_len) |
1467 | { | |
1468 | int credits, left, len16, last_desc; | |
1469 | unsigned int flits = 0, ndesc; | |
1470 | struct tx_sw_desc *sgl_sdesc; | |
1471 | struct cpl_tx_data *tx_data; | |
1472 | struct ulptx_idata *idata; | |
1473 | struct ulp_txpkt *ulptx; | |
1474 | struct fw_ulptx_wr *wr; | |
687823d2 | 1475 | u32 wr_mid = 0, nfrags; |
dc05f3df RM |
1476 | void *pos; |
1477 | u64 *end; | |
1478 | ||
1479 | flits = DIV_ROUND_UP(CHCR_PLAIN_TX_DATA_LEN, 8); | |
687823d2 RM |
1480 | nfrags = chcr_get_nfrags_to_send(skb, skb_offset, data_len); |
1481 | flits += chcr_sgl_len(nfrags); | |
dc05f3df RM |
1482 | if (prior_data_len) |
1483 | flits += 2; | |
687823d2 | 1484 | |
dc05f3df RM |
1485 | /* WR will need len16 */ |
1486 | len16 = DIV_ROUND_UP(flits, 2); | |
1487 | /* check how many descriptors needed */ | |
1488 | ndesc = DIV_ROUND_UP(flits, 8); | |
1489 | ||
1490 | credits = chcr_txq_avail(&q->q) - ndesc; | |
1491 | if (unlikely(credits < 0)) { | |
1492 | chcr_eth_txq_stop(q); | |
1493 | return NETDEV_TX_BUSY; | |
1494 | } | |
1495 | ||
1496 | if (unlikely(credits < ETHTXQ_STOP_THRES)) { | |
1497 | chcr_eth_txq_stop(q); | |
1498 | wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F; | |
1499 | } | |
1500 | ||
1501 | last_desc = q->q.pidx + ndesc - 1; | |
1502 | if (last_desc >= q->q.size) | |
1503 | last_desc -= q->q.size; | |
1504 | sgl_sdesc = &q->q.sdesc[last_desc]; | |
1505 | ||
1506 | if (unlikely(cxgb4_map_skb(tx_info->adap->pdev_dev, skb, | |
1507 | sgl_sdesc->addr) < 0)) { | |
1508 | memset(sgl_sdesc->addr, 0, sizeof(sgl_sdesc->addr)); | |
1509 | q->mapping_err++; | |
1510 | return NETDEV_TX_BUSY; | |
1511 | } | |
1512 | ||
1513 | pos = &q->q.desc[q->q.pidx]; | |
1514 | end = (u64 *)pos + flits; | |
1515 | /* FW_ULPTX_WR */ | |
1516 | wr = pos; | |
1517 | wr->op_to_compl = htonl(FW_WR_OP_V(FW_ULPTX_WR)); | |
1518 | wr->flowid_len16 = htonl(wr_mid | FW_WR_LEN16_V(len16)); | |
1519 | wr->cookie = 0; | |
dc05f3df RM |
1520 | /* ULP_TXPKT */ |
1521 | ulptx = (struct ulp_txpkt *)(wr + 1); | |
1522 | ulptx->cmd_dest = htonl(ULPTX_CMD_V(ULP_TX_PKT) | | |
1523 | ULP_TXPKT_DATAMODIFY_V(0) | | |
1524 | ULP_TXPKT_CHANNELID_V(tx_info->port_id) | | |
1525 | ULP_TXPKT_DEST_V(0) | | |
1526 | ULP_TXPKT_FID_V(q->q.cntxt_id) | ULP_TXPKT_RO_V(1)); | |
1527 | ulptx->len = htonl(len16 - 1); | |
1528 | /* ULPTX_IDATA sub-command */ | |
1529 | idata = (struct ulptx_idata *)(ulptx + 1); | |
1530 | idata->cmd_more = htonl(ULPTX_CMD_V(ULP_TX_SC_IMM) | ULP_TX_SC_MORE_F); | |
1531 | idata->len = htonl(sizeof(*tx_data) + prior_data_len); | |
1532 | /* CPL_TX_DATA */ | |
1533 | tx_data = (struct cpl_tx_data *)(idata + 1); | |
1534 | OPCODE_TID(tx_data) = htonl(MK_OPCODE_TID(CPL_TX_DATA, tx_info->tid)); | |
1535 | tx_data->len = htonl(TX_DATA_MSS_V(mss) | | |
687823d2 | 1536 | TX_LENGTH_V(data_len + prior_data_len)); |
dc05f3df RM |
1537 | /* set tcp seq number */ |
1538 | tx_data->rsvd = htonl(tcp_seq); | |
1539 | tx_data->flags = htonl(TX_BYPASS_F); | |
1540 | if (tcp_push) | |
1541 | tx_data->flags |= htonl(TX_PUSH_F | TX_SHOVE_F); | |
1542 | ||
1543 | pos = tx_data + 1; | |
1544 | /* apart from prior_data_len, we should set remaining part of 16 bytes | |
1545 | * to be zero. | |
1546 | */ | |
1547 | if (prior_data_len) | |
1548 | pos = chcr_copy_to_txd(prior_data, &q->q, pos, 16); | |
1549 | ||
1550 | /* check left again, it might go beyond queue limit */ | |
1551 | left = (void *)q->q.stat - pos; | |
1552 | ||
1553 | /* check the position again */ | |
1554 | if (!left) { | |
1555 | left = (void *)end - (void *)q->q.stat; | |
1556 | pos = q->q.desc; | |
1557 | end = pos + left; | |
1558 | } | |
1559 | /* send the complete packet including the header */ | |
687823d2 RM |
1560 | cxgb4_write_partial_sgl(skb, &q->q, pos, end, sgl_sdesc->addr, |
1561 | skb_offset, data_len); | |
dc05f3df RM |
1562 | sgl_sdesc->skb = skb; |
1563 | ||
1564 | chcr_txq_advance(&q->q, ndesc); | |
1565 | cxgb4_ring_tx_db(tx_info->adap, &q->q, ndesc); | |
1566 | return 0; | |
1567 | } | |
1568 | ||
21f82acb RM |
1569 | static int chcr_ktls_tunnel_pkt(struct chcr_ktls_info *tx_info, |
1570 | struct sk_buff *skb, | |
1571 | struct sge_eth_txq *q) | |
1572 | { | |
1573 | u32 ctrl, iplen, maclen, wr_mid = 0, len16; | |
1574 | struct tx_sw_desc *sgl_sdesc; | |
1575 | struct fw_eth_tx_pkt_wr *wr; | |
1576 | struct cpl_tx_pkt_core *cpl; | |
1577 | unsigned int flits, ndesc; | |
1578 | int credits, last_desc; | |
1579 | u64 cntrl1, *end; | |
1580 | void *pos; | |
1581 | ||
1582 | ctrl = sizeof(*cpl); | |
1583 | flits = DIV_ROUND_UP(sizeof(*wr) + ctrl, 8); | |
1584 | ||
1585 | flits += chcr_sgl_len(skb_shinfo(skb)->nr_frags + 1); | |
1586 | len16 = DIV_ROUND_UP(flits, 2); | |
1587 | /* check how many descriptors needed */ | |
1588 | ndesc = DIV_ROUND_UP(flits, 8); | |
1589 | ||
1590 | credits = chcr_txq_avail(&q->q) - ndesc; | |
1591 | if (unlikely(credits < 0)) { | |
1592 | chcr_eth_txq_stop(q); | |
1593 | return -ENOMEM; | |
1594 | } | |
1595 | ||
1596 | if (unlikely(credits < ETHTXQ_STOP_THRES)) { | |
1597 | chcr_eth_txq_stop(q); | |
1598 | wr_mid |= FW_WR_EQUEQ_F | FW_WR_EQUIQ_F; | |
1599 | } | |
1600 | ||
1601 | last_desc = q->q.pidx + ndesc - 1; | |
1602 | if (last_desc >= q->q.size) | |
1603 | last_desc -= q->q.size; | |
1604 | sgl_sdesc = &q->q.sdesc[last_desc]; | |
1605 | ||
1606 | if (unlikely(cxgb4_map_skb(tx_info->adap->pdev_dev, skb, | |
1607 | sgl_sdesc->addr) < 0)) { | |
1608 | memset(sgl_sdesc->addr, 0, sizeof(sgl_sdesc->addr)); | |
1609 | q->mapping_err++; | |
1610 | return -ENOMEM; | |
1611 | } | |
1612 | ||
1613 | iplen = skb_network_header_len(skb); | |
1614 | maclen = skb_mac_header_len(skb); | |
1615 | ||
1616 | pos = &q->q.desc[q->q.pidx]; | |
1617 | end = (u64 *)pos + flits; | |
1618 | wr = pos; | |
1619 | ||
1620 | /* Firmware work request header */ | |
1621 | wr->op_immdlen = htonl(FW_WR_OP_V(FW_ETH_TX_PKT_WR) | | |
1622 | FW_WR_IMMDLEN_V(ctrl)); | |
1623 | ||
1624 | wr->equiq_to_len16 = htonl(wr_mid | FW_WR_LEN16_V(len16)); | |
1625 | wr->r3 = 0; | |
1626 | ||
1627 | cpl = (void *)(wr + 1); | |
1628 | ||
1629 | /* CPL header */ | |
1630 | cpl->ctrl0 = htonl(TXPKT_OPCODE_V(CPL_TX_PKT) | | |
1631 | TXPKT_INTF_V(tx_info->tx_chan) | | |
1632 | TXPKT_PF_V(tx_info->adap->pf)); | |
1633 | cpl->pack = 0; | |
1634 | cntrl1 = TXPKT_CSUM_TYPE_V(tx_info->ip_family == AF_INET ? | |
1635 | TX_CSUM_TCPIP : TX_CSUM_TCPIP6); | |
1636 | cntrl1 |= T6_TXPKT_ETHHDR_LEN_V(maclen - ETH_HLEN) | | |
1637 | TXPKT_IPHDR_LEN_V(iplen); | |
1638 | /* checksum offload */ | |
1639 | cpl->ctrl1 = cpu_to_be64(cntrl1); | |
1640 | cpl->len = htons(skb->len); | |
1641 | ||
1642 | pos = cpl + 1; | |
1643 | ||
1644 | cxgb4_write_sgl(skb, &q->q, pos, end, 0, sgl_sdesc->addr); | |
1645 | sgl_sdesc->skb = skb; | |
1646 | chcr_txq_advance(&q->q, ndesc); | |
1647 | cxgb4_ring_tx_db(tx_info->adap, &q->q, ndesc); | |
1648 | return 0; | |
1649 | } | |
1650 | ||
429765a1 RM |
1651 | /* |
1652 | * chcr_ktls_copy_record_in_skb | |
1653 | * @nskb - new skb where the frags to be added. | |
687823d2 | 1654 | * @skb - old skb, to copy socket and destructor details. |
429765a1 RM |
1655 | * @record - specific record which has complete 16k record in frags. |
1656 | */ | |
1657 | static void chcr_ktls_copy_record_in_skb(struct sk_buff *nskb, | |
687823d2 | 1658 | struct sk_buff *skb, |
429765a1 RM |
1659 | struct tls_record_info *record) |
1660 | { | |
1661 | int i = 0; | |
1662 | ||
1663 | for (i = 0; i < record->num_frags; i++) { | |
1664 | skb_shinfo(nskb)->frags[i] = record->frags[i]; | |
1665 | /* increase the frag ref count */ | |
1666 | __skb_frag_ref(&skb_shinfo(nskb)->frags[i]); | |
1667 | } | |
1668 | ||
1669 | skb_shinfo(nskb)->nr_frags = record->num_frags; | |
1670 | nskb->data_len = record->len; | |
1671 | nskb->len += record->len; | |
1672 | nskb->truesize += record->len; | |
687823d2 RM |
1673 | nskb->sk = skb->sk; |
1674 | nskb->destructor = skb->destructor; | |
1675 | refcount_add(nskb->truesize, &nskb->sk->sk_wmem_alloc); | |
429765a1 RM |
1676 | } |
1677 | ||
5a4b9fe7 RM |
1678 | /* |
1679 | * chcr_end_part_handler: This handler will handle the record which | |
1680 | * is complete or if record's end part is received. T6 adapter has a issue that | |
1681 | * it can't send out TAG with partial record so if its an end part then we have | |
1682 | * to send TAG as well and for which we need to fetch the complete record and | |
1683 | * send it to crypto module. | |
1684 | * @tx_info - driver specific tls info. | |
1685 | * @skb - skb contains partial record. | |
1686 | * @record - complete record of 16K size. | |
1687 | * @tcp_seq | |
1688 | * @mss - segment size in which TP needs to chop a packet. | |
1689 | * @tcp_push_no_fin - tcp push if fin is not set. | |
1690 | * @q - TX queue. | |
1691 | * @tls_end_offset - offset from end of the record. | |
1692 | * @last wr : check if this is the last part of the skb going out. | |
1693 | * return: NETDEV_TX_OK/NETDEV_TX_BUSY. | |
1694 | */ | |
1695 | static int chcr_end_part_handler(struct chcr_ktls_info *tx_info, | |
1696 | struct sk_buff *skb, | |
1697 | struct tls_record_info *record, | |
1698 | u32 tcp_seq, int mss, bool tcp_push_no_fin, | |
687823d2 | 1699 | struct sge_eth_txq *q, u32 skb_offset, |
5a4b9fe7 RM |
1700 | u32 tls_end_offset, bool last_wr) |
1701 | { | |
bc16efd2 | 1702 | bool free_skb_if_tx_fails = false; |
5a4b9fe7 | 1703 | struct sk_buff *nskb = NULL; |
bc16efd2 | 1704 | |
5a4b9fe7 RM |
1705 | /* check if it is a complete record */ |
1706 | if (tls_end_offset == record->len) { | |
1707 | nskb = skb; | |
a8c16e8e | 1708 | atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_complete_pkts); |
5a4b9fe7 | 1709 | } else { |
687823d2 RM |
1710 | nskb = alloc_skb(0, GFP_ATOMIC); |
1711 | if (!nskb) { | |
1712 | dev_kfree_skb_any(skb); | |
429765a1 | 1713 | return NETDEV_TX_BUSY; |
687823d2 RM |
1714 | } |
1715 | ||
429765a1 | 1716 | /* copy complete record in skb */ |
687823d2 | 1717 | chcr_ktls_copy_record_in_skb(nskb, skb, record); |
429765a1 RM |
1718 | /* packet is being sent from the beginning, update the tcp_seq |
1719 | * accordingly. | |
1720 | */ | |
1721 | tcp_seq = tls_record_start_seq(record); | |
687823d2 RM |
1722 | /* reset skb offset */ |
1723 | skb_offset = 0; | |
1724 | ||
1725 | if (last_wr) | |
1726 | dev_kfree_skb_any(skb); | |
bc16efd2 VKY |
1727 | else |
1728 | free_skb_if_tx_fails = true; | |
687823d2 RM |
1729 | |
1730 | last_wr = true; | |
1731 | ||
a8c16e8e | 1732 | atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_end_pkts); |
5a4b9fe7 RM |
1733 | } |
1734 | ||
1735 | if (chcr_ktls_xmit_wr_complete(nskb, tx_info, q, tcp_seq, | |
687823d2 RM |
1736 | last_wr, record->len, skb_offset, |
1737 | record->num_frags, | |
5a4b9fe7 RM |
1738 | (last_wr && tcp_push_no_fin), |
1739 | mss)) { | |
bc16efd2 VKY |
1740 | if (free_skb_if_tx_fails) |
1741 | dev_kfree_skb_any(skb); | |
5a4b9fe7 RM |
1742 | goto out; |
1743 | } | |
63ee4591 | 1744 | tx_info->prev_seq = record->end_seq; |
5a4b9fe7 RM |
1745 | return 0; |
1746 | out: | |
429765a1 | 1747 | dev_kfree_skb_any(nskb); |
5a4b9fe7 RM |
1748 | return NETDEV_TX_BUSY; |
1749 | } | |
1750 | ||
dc05f3df RM |
1751 | /* |
1752 | * chcr_short_record_handler: This handler will take care of the records which | |
1753 | * doesn't have end part (1st part or the middle part(/s) of a record). In such | |
1754 | * cases, AES CTR will be used in place of AES GCM to send out partial packet. | |
1755 | * This partial record might be the first part of the record, or the middle | |
1756 | * part. In case of middle record we should fetch the prior data to make it 16 | |
1757 | * byte aligned. If it has a partial tls header or iv then get to the start of | |
1758 | * tls header. And if it has partial TAG, then remove the complete TAG and send | |
1759 | * only the payload. | |
1760 | * There is one more possibility that it gets a partial header, send that | |
1761 | * portion as a plaintext. | |
1762 | * @tx_info - driver specific tls info. | |
1763 | * @skb - skb contains partial record.. | |
1764 | * @record - complete record of 16K size. | |
1765 | * @tcp_seq | |
1766 | * @mss - segment size in which TP needs to chop a packet. | |
1767 | * @tcp_push_no_fin - tcp push if fin is not set. | |
1768 | * @q - TX queue. | |
1769 | * @tls_end_offset - offset from end of the record. | |
1770 | * return: NETDEV_TX_OK/NETDEV_TX_BUSY. | |
1771 | */ | |
1772 | static int chcr_short_record_handler(struct chcr_ktls_info *tx_info, | |
1773 | struct sk_buff *skb, | |
1774 | struct tls_record_info *record, | |
1775 | u32 tcp_seq, int mss, bool tcp_push_no_fin, | |
687823d2 | 1776 | u32 data_len, u32 skb_offset, |
dc05f3df RM |
1777 | struct sge_eth_txq *q, u32 tls_end_offset) |
1778 | { | |
1779 | u32 tls_rec_offset = tcp_seq - tls_record_start_seq(record); | |
1780 | u8 prior_data[16] = {0}; | |
1781 | u32 prior_data_len = 0; | |
dc05f3df RM |
1782 | |
1783 | /* check if the skb is ending in middle of tag/HASH, its a big | |
1784 | * trouble, send the packet before the HASH. | |
1785 | */ | |
687823d2 | 1786 | int remaining_record = tls_end_offset - data_len; |
dc05f3df RM |
1787 | |
1788 | if (remaining_record > 0 && | |
1789 | remaining_record < TLS_CIPHER_AES_GCM_128_TAG_SIZE) { | |
c68a28a9 RM |
1790 | int trimmed_len = 0; |
1791 | ||
1792 | if (tls_end_offset > TLS_CIPHER_AES_GCM_128_TAG_SIZE) | |
1793 | trimmed_len = data_len - | |
1794 | (TLS_CIPHER_AES_GCM_128_TAG_SIZE - | |
1795 | remaining_record); | |
1796 | if (!trimmed_len) | |
21f82acb | 1797 | return FALLBACK; |
dc05f3df | 1798 | |
687823d2 | 1799 | WARN_ON(trimmed_len > data_len); |
dc05f3df | 1800 | |
687823d2 | 1801 | data_len = trimmed_len; |
a8c16e8e | 1802 | atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_trimmed_pkts); |
dc05f3df | 1803 | } |
687823d2 | 1804 | |
83deb094 RM |
1805 | /* check if it is only the header part. */ |
1806 | if (tls_rec_offset + data_len <= (TLS_HEADER_SIZE + tx_info->iv_size)) { | |
1807 | if (chcr_ktls_tx_plaintxt(tx_info, skb, tcp_seq, mss, | |
1808 | tcp_push_no_fin, q, | |
1809 | tx_info->port_id, prior_data, | |
1810 | data_len, skb_offset, prior_data_len)) | |
1811 | goto out; | |
1812 | ||
63ee4591 | 1813 | tx_info->prev_seq = tcp_seq + data_len; |
83deb094 RM |
1814 | return 0; |
1815 | } | |
1816 | ||
dc05f3df RM |
1817 | /* check if the middle record's start point is 16 byte aligned. CTR |
1818 | * needs 16 byte aligned start point to start encryption. | |
1819 | */ | |
1820 | if (tls_rec_offset) { | |
1821 | /* there is an offset from start, means its a middle record */ | |
1822 | int remaining = 0; | |
1823 | ||
1824 | if (tls_rec_offset < (TLS_HEADER_SIZE + tx_info->iv_size)) { | |
1825 | prior_data_len = tls_rec_offset; | |
1826 | tls_rec_offset = 0; | |
1827 | remaining = 0; | |
1828 | } else { | |
1829 | prior_data_len = | |
1830 | (tls_rec_offset - | |
1831 | (TLS_HEADER_SIZE + tx_info->iv_size)) | |
1832 | % AES_BLOCK_LEN; | |
1833 | remaining = tls_rec_offset - prior_data_len; | |
1834 | } | |
1835 | ||
1836 | /* if prior_data_len is not zero, means we need to fetch prior | |
1837 | * data to make this record 16 byte aligned, or we need to reach | |
1838 | * to start offset. | |
1839 | */ | |
1840 | if (prior_data_len) { | |
1841 | int i = 0; | |
1842 | u8 *data = NULL; | |
1843 | skb_frag_t *f; | |
1844 | u8 *vaddr; | |
1845 | int frag_size = 0, frag_delta = 0; | |
1846 | ||
1847 | while (remaining > 0) { | |
1848 | frag_size = skb_frag_size(&record->frags[i]); | |
1849 | if (remaining < frag_size) | |
1850 | break; | |
1851 | ||
1852 | remaining -= frag_size; | |
1853 | i++; | |
1854 | } | |
1855 | f = &record->frags[i]; | |
1856 | vaddr = kmap_atomic(skb_frag_page(f)); | |
1857 | ||
1858 | data = vaddr + skb_frag_off(f) + remaining; | |
1859 | frag_delta = skb_frag_size(f) - remaining; | |
1860 | ||
1861 | if (frag_delta >= prior_data_len) { | |
1862 | memcpy(prior_data, data, prior_data_len); | |
1863 | kunmap_atomic(vaddr); | |
1864 | } else { | |
1865 | memcpy(prior_data, data, frag_delta); | |
1866 | kunmap_atomic(vaddr); | |
1867 | /* get the next page */ | |
1868 | f = &record->frags[i + 1]; | |
1869 | vaddr = kmap_atomic(skb_frag_page(f)); | |
1870 | data = vaddr + skb_frag_off(f); | |
1871 | memcpy(prior_data + frag_delta, | |
1872 | data, (prior_data_len - frag_delta)); | |
1873 | kunmap_atomic(vaddr); | |
1874 | } | |
1875 | /* reset tcp_seq as per the prior_data_required len */ | |
1876 | tcp_seq -= prior_data_len; | |
dc05f3df | 1877 | } |
a8c16e8e | 1878 | atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_middle_pkts); |
dc05f3df | 1879 | } else { |
a8c16e8e | 1880 | atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_start_pkts); |
dc05f3df RM |
1881 | } |
1882 | ||
1883 | if (chcr_ktls_xmit_wr_short(skb, tx_info, q, tcp_seq, tcp_push_no_fin, | |
1884 | mss, tls_rec_offset, prior_data, | |
687823d2 | 1885 | prior_data_len, data_len, skb_offset)) { |
dc05f3df RM |
1886 | goto out; |
1887 | } | |
1888 | ||
63ee4591 | 1889 | tx_info->prev_seq = tcp_seq + data_len + prior_data_len; |
dc05f3df RM |
1890 | return 0; |
1891 | out: | |
1892 | dev_kfree_skb_any(skb); | |
1893 | return NETDEV_TX_BUSY; | |
1894 | } | |
1895 | ||
21f82acb RM |
1896 | static int chcr_ktls_sw_fallback(struct sk_buff *skb, |
1897 | struct chcr_ktls_info *tx_info, | |
1898 | struct sge_eth_txq *q) | |
1899 | { | |
1900 | u32 data_len, skb_offset; | |
1901 | struct sk_buff *nskb; | |
1902 | struct tcphdr *th; | |
1903 | ||
1904 | nskb = tls_encrypt_skb(skb); | |
1905 | ||
1906 | if (!nskb) | |
1907 | return 0; | |
1908 | ||
1909 | th = tcp_hdr(nskb); | |
504148fe | 1910 | skb_offset = skb_tcp_all_headers(nskb); |
21f82acb RM |
1911 | data_len = nskb->len - skb_offset; |
1912 | skb_tx_timestamp(nskb); | |
1913 | ||
1914 | if (chcr_ktls_tunnel_pkt(tx_info, nskb, q)) | |
1915 | goto out; | |
1916 | ||
1917 | tx_info->prev_seq = ntohl(th->seq) + data_len; | |
1918 | atomic64_inc(&tx_info->adap->ch_ktls_stats.ktls_tx_fallback); | |
1919 | return 0; | |
1920 | out: | |
1921 | dev_kfree_skb_any(nskb); | |
1922 | return 0; | |
1923 | } | |
5a4b9fe7 | 1924 | /* nic tls TX handler */ |
a8c16e8e | 1925 | static int chcr_ktls_xmit(struct sk_buff *skb, struct net_device *dev) |
5a4b9fe7 | 1926 | { |
b1b5cb18 | 1927 | u32 tls_end_offset, tcp_seq, skb_data_len, skb_offset; |
3427e13e | 1928 | struct ch_ktls_port_stats_debug *port_stats; |
5a4b9fe7 | 1929 | struct chcr_ktls_ofld_ctx_tx *tx_ctx; |
a8c16e8e | 1930 | struct ch_ktls_stats_debug *stats; |
5a4b9fe7 RM |
1931 | struct tcphdr *th = tcp_hdr(skb); |
1932 | int data_len, qidx, ret = 0, mss; | |
1933 | struct tls_record_info *record; | |
1934 | struct chcr_ktls_info *tx_info; | |
5a4b9fe7 | 1935 | struct tls_context *tls_ctx; |
5a4b9fe7 RM |
1936 | struct sge_eth_txq *q; |
1937 | struct adapter *adap; | |
1938 | unsigned long flags; | |
1939 | ||
1940 | tcp_seq = ntohl(th->seq); | |
504148fe | 1941 | skb_offset = skb_tcp_all_headers(skb); |
b1b5cb18 RM |
1942 | skb_data_len = skb->len - skb_offset; |
1943 | data_len = skb_data_len; | |
5a4b9fe7 | 1944 | |
b1b5cb18 | 1945 | mss = skb_is_gso(skb) ? skb_shinfo(skb)->gso_size : data_len; |
5a4b9fe7 | 1946 | |
5a4b9fe7 RM |
1947 | tls_ctx = tls_get_ctx(skb->sk); |
1948 | if (unlikely(tls_ctx->netdev != dev)) | |
1949 | goto out; | |
1950 | ||
1951 | tx_ctx = chcr_get_ktls_tx_context(tls_ctx); | |
1952 | tx_info = tx_ctx->chcr_info; | |
1953 | ||
1954 | if (unlikely(!tx_info)) | |
1955 | goto out; | |
1956 | ||
5a4b9fe7 | 1957 | adap = tx_info->adap; |
a8c16e8e | 1958 | stats = &adap->ch_ktls_stats; |
3427e13e | 1959 | port_stats = &stats->ktls_port[tx_info->port_id]; |
62370a4f | 1960 | |
5a4b9fe7 RM |
1961 | qidx = skb->queue_mapping; |
1962 | q = &adap->sge.ethtxq[qidx + tx_info->first_qset]; | |
1963 | cxgb4_reclaim_completed_tx(adap, &q->q, true); | |
429765a1 RM |
1964 | /* if tcp options are set but finish is not send the options first */ |
1965 | if (!th->fin && chcr_ktls_check_tcp_options(th)) { | |
1966 | ret = chcr_ktls_write_tcp_options(tx_info, skb, q, | |
1967 | tx_info->tx_chan); | |
1968 | if (ret) | |
1969 | return NETDEV_TX_BUSY; | |
1970 | } | |
5a4b9fe7 | 1971 | |
429765a1 | 1972 | /* TCP segments can be in received either complete or partial. |
5a4b9fe7 | 1973 | * chcr_end_part_handler will handle cases if complete record or end |
a4813dc7 | 1974 | * part of the record is received. In case of partial end part of record, |
5a4b9fe7 RM |
1975 | * we will send the complete record again. |
1976 | */ | |
62370a4f | 1977 | |
1a73e427 VKY |
1978 | spin_lock_irqsave(&tx_ctx->base.lock, flags); |
1979 | ||
5a4b9fe7 | 1980 | do { |
5a4b9fe7 RM |
1981 | |
1982 | cxgb4_reclaim_completed_tx(adap, &q->q, true); | |
5a4b9fe7 RM |
1983 | /* fetch the tls record */ |
1984 | record = tls_get_record(&tx_ctx->base, tcp_seq, | |
1985 | &tx_info->record_no); | |
1986 | /* By the time packet reached to us, ACK is received, and record | |
1987 | * won't be found in that case, handle it gracefully. | |
1988 | */ | |
1989 | if (unlikely(!record)) { | |
1990 | spin_unlock_irqrestore(&tx_ctx->base.lock, flags); | |
3427e13e | 1991 | atomic64_inc(&port_stats->ktls_tx_drop_no_sync_data); |
5a4b9fe7 RM |
1992 | goto out; |
1993 | } | |
1994 | ||
63ee4591 RM |
1995 | tls_end_offset = record->end_seq - tcp_seq; |
1996 | ||
1997 | pr_debug("seq 0x%x, end_seq 0x%x prev_seq 0x%x, datalen 0x%x\n", | |
1998 | tcp_seq, record->end_seq, tx_info->prev_seq, data_len); | |
1999 | /* update tcb for the skb */ | |
2000 | if (skb_data_len == data_len) { | |
2001 | u32 tx_max = tcp_seq; | |
2002 | ||
2003 | if (!tls_record_is_start_marker(record) && | |
2004 | tls_end_offset < TLS_CIPHER_AES_GCM_128_TAG_SIZE) | |
2005 | tx_max = record->end_seq - | |
2006 | TLS_CIPHER_AES_GCM_128_TAG_SIZE; | |
2007 | ||
2008 | ret = chcr_ktls_xmit_tcb_cpls(tx_info, q, tx_max, | |
2009 | ntohl(th->ack_seq), | |
2010 | ntohs(th->window), | |
2011 | tls_end_offset != | |
2012 | record->len); | |
2013 | if (ret) { | |
2014 | spin_unlock_irqrestore(&tx_ctx->base.lock, | |
2015 | flags); | |
2016 | goto out; | |
2017 | } | |
659bf038 RM |
2018 | |
2019 | if (th->fin) | |
2020 | skb_get(skb); | |
63ee4591 | 2021 | } |
9478e083 RM |
2022 | |
2023 | if (unlikely(tls_record_is_start_marker(record))) { | |
2024 | atomic64_inc(&port_stats->ktls_tx_skip_no_sync_data); | |
2025 | /* If tls_end_offset < data_len, means there is some | |
2026 | * data after start marker, which needs encryption, send | |
2027 | * plaintext first and take skb refcount. else send out | |
2028 | * complete pkt as plaintext. | |
2029 | */ | |
2030 | if (tls_end_offset < data_len) | |
2031 | skb_get(skb); | |
2032 | else | |
2033 | tls_end_offset = data_len; | |
2034 | ||
2035 | ret = chcr_ktls_tx_plaintxt(tx_info, skb, tcp_seq, mss, | |
2036 | (!th->fin && th->psh), q, | |
2037 | tx_info->port_id, NULL, | |
2038 | tls_end_offset, skb_offset, | |
2039 | 0); | |
2040 | ||
9478e083 RM |
2041 | if (ret) { |
2042 | /* free the refcount taken earlier */ | |
2043 | if (tls_end_offset < data_len) | |
2044 | dev_kfree_skb_any(skb); | |
1a73e427 | 2045 | spin_unlock_irqrestore(&tx_ctx->base.lock, flags); |
9478e083 RM |
2046 | goto out; |
2047 | } | |
2048 | ||
2049 | data_len -= tls_end_offset; | |
2050 | tcp_seq = record->end_seq; | |
2051 | skb_offset += tls_end_offset; | |
2052 | continue; | |
2053 | } | |
2054 | ||
5a4b9fe7 RM |
2055 | /* if a tls record is finishing in this SKB */ |
2056 | if (tls_end_offset <= data_len) { | |
687823d2 | 2057 | ret = chcr_end_part_handler(tx_info, skb, record, |
5a4b9fe7 RM |
2058 | tcp_seq, mss, |
2059 | (!th->fin && th->psh), q, | |
687823d2 | 2060 | skb_offset, |
5a4b9fe7 | 2061 | tls_end_offset, |
687823d2 RM |
2062 | skb_offset + |
2063 | tls_end_offset == skb->len); | |
5a4b9fe7 RM |
2064 | |
2065 | data_len -= tls_end_offset; | |
2066 | /* tcp_seq increment is required to handle next record. | |
2067 | */ | |
2068 | tcp_seq += tls_end_offset; | |
687823d2 | 2069 | skb_offset += tls_end_offset; |
dc05f3df | 2070 | } else { |
687823d2 | 2071 | ret = chcr_short_record_handler(tx_info, skb, |
dc05f3df RM |
2072 | record, tcp_seq, mss, |
2073 | (!th->fin && th->psh), | |
687823d2 | 2074 | data_len, skb_offset, |
dc05f3df RM |
2075 | q, tls_end_offset); |
2076 | data_len = 0; | |
5a4b9fe7 | 2077 | } |
687823d2 | 2078 | |
dc05f3df | 2079 | /* if any failure, come out from the loop. */ |
659bf038 | 2080 | if (ret) { |
1a73e427 | 2081 | spin_unlock_irqrestore(&tx_ctx->base.lock, flags); |
659bf038 RM |
2082 | if (th->fin) |
2083 | dev_kfree_skb_any(skb); | |
21f82acb RM |
2084 | |
2085 | if (ret == FALLBACK) | |
2086 | return chcr_ktls_sw_fallback(skb, tx_info, q); | |
2087 | ||
687823d2 | 2088 | return NETDEV_TX_OK; |
659bf038 | 2089 | } |
687823d2 | 2090 | |
dc05f3df | 2091 | /* length should never be less than 0 */ |
5a4b9fe7 RM |
2092 | WARN_ON(data_len < 0); |
2093 | ||
2094 | } while (data_len > 0); | |
2095 | ||
1a73e427 | 2096 | spin_unlock_irqrestore(&tx_ctx->base.lock, flags); |
3427e13e | 2097 | atomic64_inc(&port_stats->ktls_tx_encrypted_packets); |
b1b5cb18 | 2098 | atomic64_add(skb_data_len, &port_stats->ktls_tx_encrypted_bytes); |
62370a4f | 2099 | |
429765a1 RM |
2100 | /* tcp finish is set, send a separate tcp msg including all the options |
2101 | * as well. | |
2102 | */ | |
659bf038 | 2103 | if (th->fin) { |
429765a1 | 2104 | chcr_ktls_write_tcp_options(tx_info, skb, q, tx_info->tx_chan); |
659bf038 RM |
2105 | dev_kfree_skb_any(skb); |
2106 | } | |
429765a1 | 2107 | |
687823d2 | 2108 | return NETDEV_TX_OK; |
5a4b9fe7 RM |
2109 | out: |
2110 | dev_kfree_skb_any(skb); | |
2111 | return NETDEV_TX_OK; | |
2112 | } | |
a8c16e8e RM |
2113 | |
2114 | static void *chcr_ktls_uld_add(const struct cxgb4_lld_info *lldi) | |
2115 | { | |
2116 | struct chcr_ktls_uld_ctx *u_ctx; | |
2117 | ||
2118 | pr_info_once("%s - version %s\n", CHCR_KTLS_DRV_DESC, | |
2119 | CHCR_KTLS_DRV_VERSION); | |
2120 | u_ctx = kzalloc(sizeof(*u_ctx), GFP_KERNEL); | |
2121 | if (!u_ctx) { | |
2122 | u_ctx = ERR_PTR(-ENOMEM); | |
2123 | goto out; | |
2124 | } | |
2125 | u_ctx->lldi = *lldi; | |
65e302a9 AS |
2126 | u_ctx->detach = false; |
2127 | xa_init_flags(&u_ctx->tid_list, XA_FLAGS_LOCK_BH); | |
a8c16e8e RM |
2128 | out: |
2129 | return u_ctx; | |
2130 | } | |
2131 | ||
2132 | static const struct tlsdev_ops chcr_ktls_ops = { | |
2133 | .tls_dev_add = chcr_ktls_dev_add, | |
2134 | .tls_dev_del = chcr_ktls_dev_del, | |
2135 | }; | |
2136 | ||
2137 | static chcr_handler_func work_handlers[NUM_CPL_CMDS] = { | |
2138 | [CPL_ACT_OPEN_RPL] = chcr_ktls_cpl_act_open_rpl, | |
2139 | [CPL_SET_TCB_RPL] = chcr_ktls_cpl_set_tcb_rpl, | |
2140 | }; | |
2141 | ||
2142 | static int chcr_ktls_uld_rx_handler(void *handle, const __be64 *rsp, | |
2143 | const struct pkt_gl *pgl) | |
2144 | { | |
2145 | const struct cpl_act_open_rpl *rpl = (struct cpl_act_open_rpl *)rsp; | |
2146 | struct chcr_ktls_uld_ctx *u_ctx = handle; | |
2147 | u8 opcode = rpl->ot.opcode; | |
2148 | struct adapter *adap; | |
2149 | ||
2150 | adap = pci_get_drvdata(u_ctx->lldi.pdev); | |
2151 | ||
2152 | if (!work_handlers[opcode]) { | |
2153 | pr_err("Unsupported opcode %d received\n", opcode); | |
2154 | return 0; | |
2155 | } | |
2156 | ||
2157 | work_handlers[opcode](adap, (unsigned char *)&rsp[1]); | |
2158 | return 0; | |
2159 | } | |
2160 | ||
65e302a9 AS |
2161 | static void clear_conn_resources(struct chcr_ktls_info *tx_info) |
2162 | { | |
2163 | /* clear l2t entry */ | |
2164 | if (tx_info->l2te) | |
2165 | cxgb4_l2t_release(tx_info->l2te); | |
2166 | ||
2167 | #if IS_ENABLED(CONFIG_IPV6) | |
2168 | /* clear clip entry */ | |
2169 | if (tx_info->ip_family == AF_INET6) | |
2170 | cxgb4_clip_release(tx_info->netdev, (const u32 *) | |
2171 | &tx_info->sk->sk_v6_rcv_saddr, | |
2172 | 1); | |
2173 | #endif | |
2174 | ||
2175 | /* clear tid */ | |
2176 | if (tx_info->tid != -1) | |
2177 | cxgb4_remove_tid(&tx_info->adap->tids, tx_info->tx_chan, | |
2178 | tx_info->tid, tx_info->ip_family); | |
2179 | } | |
2180 | ||
2181 | static void ch_ktls_reset_all_conn(struct chcr_ktls_uld_ctx *u_ctx) | |
2182 | { | |
2183 | struct ch_ktls_port_stats_debug *port_stats; | |
2184 | struct chcr_ktls_ofld_ctx_tx *tx_ctx; | |
2185 | struct chcr_ktls_info *tx_info; | |
2186 | unsigned long index; | |
2187 | ||
2188 | xa_for_each(&u_ctx->tid_list, index, tx_ctx) { | |
2189 | tx_info = tx_ctx->chcr_info; | |
2190 | clear_conn_resources(tx_info); | |
2191 | port_stats = &tx_info->adap->ch_ktls_stats.ktls_port[tx_info->port_id]; | |
2192 | atomic64_inc(&port_stats->ktls_tx_connection_close); | |
2193 | kvfree(tx_info); | |
2194 | tx_ctx->chcr_info = NULL; | |
2195 | /* release module refcount */ | |
2196 | module_put(THIS_MODULE); | |
2197 | } | |
2198 | } | |
2199 | ||
a8c16e8e RM |
2200 | static int chcr_ktls_uld_state_change(void *handle, enum cxgb4_state new_state) |
2201 | { | |
2202 | struct chcr_ktls_uld_ctx *u_ctx = handle; | |
2203 | ||
2204 | switch (new_state) { | |
2205 | case CXGB4_STATE_UP: | |
2206 | pr_info("%s: Up\n", pci_name(u_ctx->lldi.pdev)); | |
2207 | mutex_lock(&dev_mutex); | |
2208 | list_add_tail(&u_ctx->entry, &uld_ctx_list); | |
2209 | mutex_unlock(&dev_mutex); | |
2210 | break; | |
2211 | case CXGB4_STATE_START_RECOVERY: | |
2212 | case CXGB4_STATE_DOWN: | |
2213 | case CXGB4_STATE_DETACH: | |
2214 | pr_info("%s: Down\n", pci_name(u_ctx->lldi.pdev)); | |
2215 | mutex_lock(&dev_mutex); | |
65e302a9 | 2216 | u_ctx->detach = true; |
a8c16e8e | 2217 | list_del(&u_ctx->entry); |
65e302a9 AS |
2218 | ch_ktls_reset_all_conn(u_ctx); |
2219 | xa_destroy(&u_ctx->tid_list); | |
a8c16e8e RM |
2220 | mutex_unlock(&dev_mutex); |
2221 | break; | |
2222 | default: | |
2223 | break; | |
2224 | } | |
2225 | ||
2226 | return 0; | |
2227 | } | |
2228 | ||
2229 | static struct cxgb4_uld_info chcr_ktls_uld_info = { | |
2230 | .name = CHCR_KTLS_DRV_MODULE_NAME, | |
2231 | .nrxq = 1, | |
2232 | .rxq_size = 1024, | |
2233 | .add = chcr_ktls_uld_add, | |
2234 | .tx_handler = chcr_ktls_xmit, | |
2235 | .rx_handler = chcr_ktls_uld_rx_handler, | |
2236 | .state_change = chcr_ktls_uld_state_change, | |
2237 | .tlsdev_ops = &chcr_ktls_ops, | |
2238 | }; | |
2239 | ||
2240 | static int __init chcr_ktls_init(void) | |
2241 | { | |
2242 | cxgb4_register_uld(CXGB4_ULD_KTLS, &chcr_ktls_uld_info); | |
2243 | return 0; | |
2244 | } | |
2245 | ||
2246 | static void __exit chcr_ktls_exit(void) | |
2247 | { | |
2248 | struct chcr_ktls_uld_ctx *u_ctx, *tmp; | |
2249 | struct adapter *adap; | |
2250 | ||
2251 | pr_info("driver unloaded\n"); | |
2252 | ||
2253 | mutex_lock(&dev_mutex); | |
2254 | list_for_each_entry_safe(u_ctx, tmp, &uld_ctx_list, entry) { | |
2255 | adap = pci_get_drvdata(u_ctx->lldi.pdev); | |
2256 | memset(&adap->ch_ktls_stats, 0, sizeof(adap->ch_ktls_stats)); | |
2257 | list_del(&u_ctx->entry); | |
65e302a9 | 2258 | xa_destroy(&u_ctx->tid_list); |
a8c16e8e RM |
2259 | kfree(u_ctx); |
2260 | } | |
2261 | mutex_unlock(&dev_mutex); | |
2262 | cxgb4_unregister_uld(CXGB4_ULD_KTLS); | |
2263 | } | |
2264 | ||
2265 | module_init(chcr_ktls_init); | |
2266 | module_exit(chcr_ktls_exit); | |
2267 | ||
2268 | MODULE_DESCRIPTION("Chelsio NIC TLS ULD driver"); | |
2269 | MODULE_LICENSE("GPL"); | |
2270 | MODULE_AUTHOR("Chelsio Communications"); | |
2271 | MODULE_VERSION(CHCR_KTLS_DRV_VERSION); |