1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 /* Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */
4 #include <linux/mlx5/device.h>
5 #include <linux/mlx5/mlx5_ifc.h>
6 #include <linux/xarray.h>
11 #include "en_accel/macsec.h"
12 #include "en_accel/macsec_fs.h"
14 #define MLX5_MACSEC_EPN_SCOPE_MID 0x80000000L
15 #define MLX5E_MACSEC_ASO_CTX_SZ MLX5_ST_SZ_BYTES(macsec_aso)
17 enum mlx5_macsec_aso_event_arm {
18 MLX5E_ASO_EPN_ARM = BIT(0),
22 MLX5_MACSEC_ASO_REMOVE_FLOW_PKT_CNT_OFFSET,
25 struct mlx5e_macsec_handle {
26 struct mlx5e_macsec *macsec;
35 struct mlx5e_macsec_aso_out {
40 struct mlx5e_macsec_aso_in {
45 struct mlx5e_macsec_epn_state {
51 struct mlx5e_macsec_async_work {
52 struct mlx5e_macsec *macsec;
53 struct mlx5_core_dev *mdev;
54 struct work_struct work;
58 struct mlx5e_macsec_sa {
67 struct rhash_head hash;
69 union mlx5e_macsec_rule *macsec_rule;
70 struct rcu_head rcu_head;
71 struct mlx5e_macsec_epn_state epn_state;
74 struct mlx5e_macsec_rx_sc;
75 struct mlx5e_macsec_rx_sc_xarray_element {
77 struct mlx5e_macsec_rx_sc *rx_sc;
80 struct mlx5e_macsec_rx_sc {
83 struct mlx5e_macsec_sa *rx_sa[MACSEC_NUM_AN];
84 struct list_head rx_sc_list_element;
85 struct mlx5e_macsec_rx_sc_xarray_element *sc_xarray_element;
86 struct metadata_dst *md_dst;
87 struct rcu_head rcu_head;
90 struct mlx5e_macsec_umr {
92 u8 ctx[MLX5_ST_SZ_BYTES(macsec_aso)];
96 struct mlx5e_macsec_aso {
98 struct mlx5_aso *maso;
99 /* Protects macsec ASO */
100 struct mutex aso_lock;
102 struct mlx5e_macsec_umr *umr;
107 static const struct rhashtable_params rhash_sci = {
108 .key_len = sizeof_field(struct mlx5e_macsec_sa, sci),
109 .key_offset = offsetof(struct mlx5e_macsec_sa, sci),
110 .head_offset = offsetof(struct mlx5e_macsec_sa, hash),
111 .automatic_shrinking = true,
115 struct mlx5e_macsec_device {
116 const struct net_device *netdev;
117 struct mlx5e_macsec_sa *tx_sa[MACSEC_NUM_AN];
118 struct list_head macsec_rx_sc_list_head;
119 unsigned char *dev_addr;
120 struct list_head macsec_device_list_element;
123 struct mlx5e_macsec {
124 struct list_head macsec_device_list_head;
126 struct mlx5e_macsec_fs *macsec_fs;
127 struct mutex lock; /* Protects mlx5e_macsec internal contexts */
129 /* Tx sci -> fs id mapping handling */
130 struct rhashtable sci_hash; /* sci -> mlx5e_macsec_sa */
132 /* Rx fs_id -> rx_sc mapping */
133 struct xarray sc_xarray;
135 struct mlx5_core_dev *mdev;
138 struct mlx5e_macsec_stats stats;
141 struct mlx5e_macsec_aso aso;
143 struct notifier_block nb;
144 struct workqueue_struct *wq;
147 struct mlx5_macsec_obj_attrs {
153 struct mlx5e_macsec_epn_state epn_state;
160 struct mlx5_aso_ctrl_param {
162 u8 condition_0_operand;
163 u8 condition_1_operand;
164 u8 condition_0_offset;
165 u8 condition_1_offset;
167 u8 condition_operand;
168 u32 condition_0_data;
169 u32 condition_0_mask;
170 u32 condition_1_data;
171 u32 condition_1_mask;
176 static int mlx5e_macsec_aso_reg_mr(struct mlx5_core_dev *mdev, struct mlx5e_macsec_aso *aso)
178 struct mlx5e_macsec_umr *umr;
179 struct device *dma_device;
183 umr = kzalloc(sizeof(*umr), GFP_KERNEL);
189 dma_device = &mdev->pdev->dev;
190 dma_addr = dma_map_single(dma_device, umr->ctx, sizeof(umr->ctx), DMA_BIDIRECTIONAL);
191 err = dma_mapping_error(dma_device, dma_addr);
193 mlx5_core_err(mdev, "Can't map dma device, err=%d\n", err);
197 err = mlx5e_create_mkey(mdev, aso->pdn, &umr->mkey);
199 mlx5_core_err(mdev, "Can't create mkey, err=%d\n", err);
203 umr->dma_addr = dma_addr;
210 dma_unmap_single(dma_device, dma_addr, sizeof(umr->ctx), DMA_BIDIRECTIONAL);
216 static void mlx5e_macsec_aso_dereg_mr(struct mlx5_core_dev *mdev, struct mlx5e_macsec_aso *aso)
218 struct mlx5e_macsec_umr *umr = aso->umr;
220 mlx5_core_destroy_mkey(mdev, umr->mkey);
221 dma_unmap_single(&mdev->pdev->dev, umr->dma_addr, sizeof(umr->ctx), DMA_BIDIRECTIONAL);
225 static int macsec_set_replay_protection(struct mlx5_macsec_obj_attrs *attrs, void *aso_ctx)
229 if (!attrs->replay_protect)
232 switch (attrs->replay_window) {
234 window_sz = MLX5_MACSEC_ASO_REPLAY_WIN_256BIT;
237 window_sz = MLX5_MACSEC_ASO_REPLAY_WIN_128BIT;
240 window_sz = MLX5_MACSEC_ASO_REPLAY_WIN_64BIT;
243 window_sz = MLX5_MACSEC_ASO_REPLAY_WIN_32BIT;
248 MLX5_SET(macsec_aso, aso_ctx, window_size, window_sz);
249 MLX5_SET(macsec_aso, aso_ctx, mode, MLX5_MACSEC_ASO_REPLAY_PROTECTION);
254 static int mlx5e_macsec_create_object(struct mlx5_core_dev *mdev,
255 struct mlx5_macsec_obj_attrs *attrs,
259 u32 in[MLX5_ST_SZ_DW(create_macsec_obj_in)] = {};
260 u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
265 obj = MLX5_ADDR_OF(create_macsec_obj_in, in, macsec_object);
266 aso_ctx = MLX5_ADDR_OF(macsec_offload_obj, obj, macsec_aso);
268 MLX5_SET(macsec_offload_obj, obj, confidentiality_en, attrs->encrypt);
269 MLX5_SET(macsec_offload_obj, obj, dekn, attrs->enc_key_id);
270 MLX5_SET(macsec_offload_obj, obj, aso_return_reg, MLX5_MACSEC_ASO_REG_C_4_5);
271 MLX5_SET(macsec_offload_obj, obj, macsec_aso_access_pd, attrs->aso_pdn);
272 MLX5_SET(macsec_aso, aso_ctx, mode_parameter, attrs->next_pn);
275 if (attrs->epn_state.epn_enabled) {
279 MLX5_SET(macsec_aso, aso_ctx, epn_event_arm, 1);
280 MLX5_SET(macsec_offload_obj, obj, epn_en, 1);
281 MLX5_SET(macsec_offload_obj, obj, epn_msb, attrs->epn_state.epn_msb);
282 MLX5_SET(macsec_offload_obj, obj, epn_overlap, attrs->epn_state.overlap);
283 MLX5_SET64(macsec_offload_obj, obj, sci, (__force u64)attrs->ssci);
284 salt_p = MLX5_ADDR_OF(macsec_offload_obj, obj, salt);
285 for (i = 0; i < 3 ; i++)
286 memcpy((u32 *)salt_p + i, &attrs->salt.bytes[4 * (2 - i)], 4);
288 MLX5_SET64(macsec_offload_obj, obj, sci, (__force u64)(attrs->sci));
291 MLX5_SET(macsec_aso, aso_ctx, valid, 0x1);
293 MLX5_SET(macsec_aso, aso_ctx, mode, MLX5_MACSEC_ASO_INC_SN);
295 err = macsec_set_replay_protection(attrs, aso_ctx);
300 /* general object fields set */
301 MLX5_SET(general_obj_in_cmd_hdr, in, opcode, MLX5_CMD_OP_CREATE_GENERAL_OBJECT);
302 MLX5_SET(general_obj_in_cmd_hdr, in, obj_type, MLX5_GENERAL_OBJECT_TYPES_MACSEC);
304 err = mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out));
307 "MACsec offload: Failed to create MACsec object (err = %d)\n",
312 *macsec_obj_id = MLX5_GET(general_obj_out_cmd_hdr, out, obj_id);
317 static void mlx5e_macsec_destroy_object(struct mlx5_core_dev *mdev, u32 macsec_obj_id)
319 u32 in[MLX5_ST_SZ_DW(general_obj_in_cmd_hdr)] = {};
320 u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
322 MLX5_SET(general_obj_in_cmd_hdr, in, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJECT);
323 MLX5_SET(general_obj_in_cmd_hdr, in, obj_type, MLX5_GENERAL_OBJECT_TYPES_MACSEC);
324 MLX5_SET(general_obj_in_cmd_hdr, in, obj_id, macsec_obj_id);
326 mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out));
329 static void mlx5e_macsec_cleanup_sa(struct mlx5e_macsec *macsec,
330 struct mlx5e_macsec_sa *sa,
333 int action = (is_tx) ? MLX5_ACCEL_MACSEC_ACTION_ENCRYPT :
334 MLX5_ACCEL_MACSEC_ACTION_DECRYPT;
336 if ((is_tx) && sa->fs_id) {
337 /* Make sure ongoing datapath readers sees a valid SA */
338 rhashtable_remove_fast(&macsec->sci_hash, &sa->hash, rhash_sci);
342 if (!sa->macsec_rule)
345 mlx5e_macsec_fs_del_rule(macsec->macsec_fs, sa->macsec_rule, action);
346 mlx5e_macsec_destroy_object(macsec->mdev, sa->macsec_obj_id);
347 sa->macsec_rule = NULL;
350 static int mlx5e_macsec_init_sa(struct macsec_context *ctx,
351 struct mlx5e_macsec_sa *sa,
355 struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
356 struct mlx5e_macsec *macsec = priv->macsec;
357 struct mlx5_macsec_rule_attrs rule_attrs;
358 struct mlx5_core_dev *mdev = priv->mdev;
359 struct mlx5_macsec_obj_attrs obj_attrs;
360 union mlx5e_macsec_rule *macsec_rule;
361 struct macsec_key *key;
364 obj_attrs.next_pn = sa->next_pn;
365 obj_attrs.sci = cpu_to_be64((__force u64)sa->sci);
366 obj_attrs.enc_key_id = sa->enc_key_id;
367 obj_attrs.encrypt = encrypt;
368 obj_attrs.aso_pdn = macsec->aso.pdn;
369 obj_attrs.epn_state = sa->epn_state;
372 obj_attrs.ssci = cpu_to_be32((__force u32)ctx->sa.tx_sa->ssci);
373 key = &ctx->sa.tx_sa->key;
375 obj_attrs.ssci = cpu_to_be32((__force u32)ctx->sa.rx_sa->ssci);
376 key = &ctx->sa.rx_sa->key;
379 memcpy(&obj_attrs.salt, &key->salt, sizeof(key->salt));
380 obj_attrs.replay_window = ctx->secy->replay_window;
381 obj_attrs.replay_protect = ctx->secy->replay_protect;
383 err = mlx5e_macsec_create_object(mdev, &obj_attrs, is_tx, &sa->macsec_obj_id);
387 rule_attrs.macsec_obj_id = sa->macsec_obj_id;
388 rule_attrs.sci = sa->sci;
389 rule_attrs.assoc_num = sa->assoc_num;
390 rule_attrs.action = (is_tx) ? MLX5_ACCEL_MACSEC_ACTION_ENCRYPT :
391 MLX5_ACCEL_MACSEC_ACTION_DECRYPT;
393 macsec_rule = mlx5e_macsec_fs_add_rule(macsec->macsec_fs, ctx, &rule_attrs, &sa->fs_id);
396 goto destroy_macsec_object;
399 sa->macsec_rule = macsec_rule;
402 err = rhashtable_insert_fast(&macsec->sci_hash, &sa->hash, rhash_sci);
404 goto destroy_macsec_object_and_rule;
409 destroy_macsec_object_and_rule:
410 mlx5e_macsec_cleanup_sa(macsec, sa, is_tx);
411 destroy_macsec_object:
412 mlx5e_macsec_destroy_object(mdev, sa->macsec_obj_id);
417 static struct mlx5e_macsec_rx_sc *
418 mlx5e_macsec_get_rx_sc_from_sc_list(const struct list_head *list, sci_t sci)
420 struct mlx5e_macsec_rx_sc *iter;
422 list_for_each_entry_rcu(iter, list, rx_sc_list_element) {
423 if (iter->sci == sci)
430 static int mlx5e_macsec_update_rx_sa(struct mlx5e_macsec *macsec,
431 struct mlx5e_macsec_sa *rx_sa,
434 struct mlx5_core_dev *mdev = macsec->mdev;
435 struct mlx5_macsec_obj_attrs attrs;
438 if (rx_sa->active != active)
441 rx_sa->active = active;
443 mlx5e_macsec_cleanup_sa(macsec, rx_sa, false);
447 attrs.sci = rx_sa->sci;
448 attrs.enc_key_id = rx_sa->enc_key_id;
449 err = mlx5e_macsec_create_object(mdev, &attrs, false, &rx_sa->macsec_obj_id);
456 static bool mlx5e_macsec_secy_features_validate(struct macsec_context *ctx)
458 const struct net_device *netdev = ctx->netdev;
459 const struct macsec_secy *secy = ctx->secy;
461 if (secy->validate_frames != MACSEC_VALIDATE_STRICT) {
463 "MACsec offload is supported only when validate_frame is in strict mode\n");
467 if (secy->icv_len != MACSEC_DEFAULT_ICV_LEN) {
468 netdev_err(netdev, "MACsec offload is supported only when icv_len is %d\n",
469 MACSEC_DEFAULT_ICV_LEN);
473 if (!secy->protect_frames) {
475 "MACsec offload is supported only when protect_frames is set\n");
482 static struct mlx5e_macsec_device *
483 mlx5e_macsec_get_macsec_device_context(const struct mlx5e_macsec *macsec,
484 const struct macsec_context *ctx)
486 struct mlx5e_macsec_device *iter;
487 const struct list_head *list;
489 list = &macsec->macsec_device_list_head;
490 list_for_each_entry_rcu(iter, list, macsec_device_list_element) {
491 if (iter->netdev == ctx->secy->netdev)
498 static void update_macsec_epn(struct mlx5e_macsec_sa *sa, const struct macsec_key *key,
499 const pn_t *next_pn_halves)
501 struct mlx5e_macsec_epn_state *epn_state = &sa->epn_state;
503 sa->salt = key->salt;
504 epn_state->epn_enabled = 1;
505 epn_state->epn_msb = next_pn_halves->upper;
506 epn_state->overlap = next_pn_halves->lower < MLX5_MACSEC_EPN_SCOPE_MID ? 0 : 1;
509 static int mlx5e_macsec_add_txsa(struct macsec_context *ctx)
511 const struct macsec_tx_sc *tx_sc = &ctx->secy->tx_sc;
512 const struct macsec_tx_sa *ctx_tx_sa = ctx->sa.tx_sa;
513 struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
514 const struct macsec_secy *secy = ctx->secy;
515 struct mlx5e_macsec_device *macsec_device;
516 struct mlx5_core_dev *mdev = priv->mdev;
517 u8 assoc_num = ctx->sa.assoc_num;
518 struct mlx5e_macsec_sa *tx_sa;
519 struct mlx5e_macsec *macsec;
522 mutex_lock(&priv->macsec->lock);
524 macsec = priv->macsec;
525 macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
526 if (!macsec_device) {
527 netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
532 if (macsec_device->tx_sa[assoc_num]) {
533 netdev_err(ctx->netdev, "MACsec offload tx_sa: %d already exist\n", assoc_num);
538 tx_sa = kzalloc(sizeof(*tx_sa), GFP_KERNEL);
544 tx_sa->active = ctx_tx_sa->active;
545 tx_sa->next_pn = ctx_tx_sa->next_pn_halves.lower;
546 tx_sa->sci = secy->sci;
547 tx_sa->assoc_num = assoc_num;
550 update_macsec_epn(tx_sa, &ctx_tx_sa->key, &ctx_tx_sa->next_pn_halves);
552 err = mlx5_create_encryption_key(mdev, ctx->sa.key, secy->key_len,
553 MLX5_ACCEL_OBJ_MACSEC_KEY,
558 macsec_device->tx_sa[assoc_num] = tx_sa;
559 if (!secy->operational ||
560 assoc_num != tx_sc->encoding_sa ||
564 err = mlx5e_macsec_init_sa(ctx, tx_sa, tx_sc->encrypt, true);
566 goto destroy_encryption_key;
568 mutex_unlock(&macsec->lock);
572 destroy_encryption_key:
573 macsec_device->tx_sa[assoc_num] = NULL;
574 mlx5_destroy_encryption_key(mdev, tx_sa->enc_key_id);
578 mutex_unlock(&macsec->lock);
583 static int mlx5e_macsec_upd_txsa(struct macsec_context *ctx)
585 const struct macsec_tx_sc *tx_sc = &ctx->secy->tx_sc;
586 const struct macsec_tx_sa *ctx_tx_sa = ctx->sa.tx_sa;
587 struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
588 struct mlx5e_macsec_device *macsec_device;
589 u8 assoc_num = ctx->sa.assoc_num;
590 struct mlx5e_macsec_sa *tx_sa;
591 struct mlx5e_macsec *macsec;
592 struct net_device *netdev;
595 mutex_lock(&priv->macsec->lock);
597 macsec = priv->macsec;
598 netdev = ctx->netdev;
599 macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
600 if (!macsec_device) {
601 netdev_err(netdev, "MACsec offload: Failed to find device context\n");
606 tx_sa = macsec_device->tx_sa[assoc_num];
608 netdev_err(netdev, "MACsec offload: TX sa 0x%x doesn't exist\n", assoc_num);
613 if (tx_sa->next_pn != ctx_tx_sa->next_pn_halves.lower) {
614 netdev_err(netdev, "MACsec offload: update TX sa %d PN isn't supported\n",
620 if (tx_sa->active == ctx_tx_sa->active)
623 if (tx_sa->assoc_num != tx_sc->encoding_sa)
626 if (ctx_tx_sa->active) {
627 err = mlx5e_macsec_init_sa(ctx, tx_sa, tx_sc->encrypt, true);
631 if (!tx_sa->macsec_rule) {
636 mlx5e_macsec_cleanup_sa(macsec, tx_sa, true);
639 tx_sa->active = ctx_tx_sa->active;
641 mutex_unlock(&macsec->lock);
646 static int mlx5e_macsec_del_txsa(struct macsec_context *ctx)
648 struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
649 struct mlx5e_macsec_device *macsec_device;
650 u8 assoc_num = ctx->sa.assoc_num;
651 struct mlx5e_macsec_sa *tx_sa;
652 struct mlx5e_macsec *macsec;
655 mutex_lock(&priv->macsec->lock);
656 macsec = priv->macsec;
657 macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
658 if (!macsec_device) {
659 netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
664 tx_sa = macsec_device->tx_sa[assoc_num];
666 netdev_err(ctx->netdev, "MACsec offload: TX sa 0x%x doesn't exist\n", assoc_num);
671 mlx5e_macsec_cleanup_sa(macsec, tx_sa, true);
672 mlx5_destroy_encryption_key(macsec->mdev, tx_sa->enc_key_id);
674 macsec_device->tx_sa[assoc_num] = NULL;
677 mutex_unlock(&macsec->lock);
682 static u32 mlx5e_macsec_get_sa_from_hashtable(struct rhashtable *sci_hash, sci_t *sci)
684 struct mlx5e_macsec_sa *macsec_sa;
688 macsec_sa = rhashtable_lookup(sci_hash, sci, rhash_sci);
690 fs_id = macsec_sa->fs_id;
696 static int mlx5e_macsec_add_rxsc(struct macsec_context *ctx)
698 struct mlx5e_macsec_rx_sc_xarray_element *sc_xarray_element;
699 struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
700 const struct macsec_rx_sc *ctx_rx_sc = ctx->rx_sc;
701 struct mlx5e_macsec_device *macsec_device;
702 struct mlx5e_macsec_rx_sc *rx_sc;
703 struct list_head *rx_sc_list;
704 struct mlx5e_macsec *macsec;
707 mutex_lock(&priv->macsec->lock);
708 macsec = priv->macsec;
709 macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
710 if (!macsec_device) {
711 netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
716 rx_sc_list = &macsec_device->macsec_rx_sc_list_head;
717 rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(rx_sc_list, ctx_rx_sc->sci);
719 netdev_err(ctx->netdev, "MACsec offload: rx_sc (sci %lld) already exists\n",
725 rx_sc = kzalloc(sizeof(*rx_sc), GFP_KERNEL);
731 sc_xarray_element = kzalloc(sizeof(*sc_xarray_element), GFP_KERNEL);
732 if (!sc_xarray_element) {
737 sc_xarray_element->rx_sc = rx_sc;
738 err = xa_alloc(&macsec->sc_xarray, &sc_xarray_element->fs_id, sc_xarray_element,
739 XA_LIMIT(1, USHRT_MAX), GFP_KERNEL);
741 goto destroy_sc_xarray_elemenet;
743 rx_sc->md_dst = metadata_dst_alloc(0, METADATA_MACSEC, GFP_KERNEL);
744 if (!rx_sc->md_dst) {
749 rx_sc->sci = ctx_rx_sc->sci;
750 rx_sc->active = ctx_rx_sc->active;
751 list_add_rcu(&rx_sc->rx_sc_list_element, rx_sc_list);
753 rx_sc->sc_xarray_element = sc_xarray_element;
754 rx_sc->md_dst->u.macsec_info.sci = rx_sc->sci;
755 mutex_unlock(&macsec->lock);
760 xa_erase(&macsec->sc_xarray, sc_xarray_element->fs_id);
761 destroy_sc_xarray_elemenet:
762 kfree(sc_xarray_element);
767 mutex_unlock(&macsec->lock);
772 static int mlx5e_macsec_upd_rxsc(struct macsec_context *ctx)
774 struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
775 const struct macsec_rx_sc *ctx_rx_sc = ctx->rx_sc;
776 struct mlx5e_macsec_device *macsec_device;
777 struct mlx5e_macsec_rx_sc *rx_sc;
778 struct mlx5e_macsec_sa *rx_sa;
779 struct mlx5e_macsec *macsec;
780 struct list_head *list;
784 mutex_lock(&priv->macsec->lock);
786 macsec = priv->macsec;
787 macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
788 if (!macsec_device) {
789 netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
794 list = &macsec_device->macsec_rx_sc_list_head;
795 rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, ctx_rx_sc->sci);
801 rx_sc->active = ctx_rx_sc->active;
802 if (rx_sc->active == ctx_rx_sc->active)
805 for (i = 0; i < MACSEC_NUM_AN; ++i) {
806 rx_sa = rx_sc->rx_sa[i];
810 err = mlx5e_macsec_update_rx_sa(macsec, rx_sa, rx_sa->active && ctx_rx_sc->active);
816 mutex_unlock(&macsec->lock);
821 static int mlx5e_macsec_del_rxsc(struct macsec_context *ctx)
823 struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
824 struct mlx5e_macsec_device *macsec_device;
825 struct mlx5e_macsec_rx_sc *rx_sc;
826 struct mlx5e_macsec_sa *rx_sa;
827 struct mlx5e_macsec *macsec;
828 struct list_head *list;
832 mutex_lock(&priv->macsec->lock);
834 macsec = priv->macsec;
835 macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
836 if (!macsec_device) {
837 netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
842 list = &macsec_device->macsec_rx_sc_list_head;
843 rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, ctx->rx_sc->sci);
845 netdev_err(ctx->netdev,
846 "MACsec offload rx_sc sci %lld doesn't exist\n",
847 ctx->sa.rx_sa->sc->sci);
852 for (i = 0; i < MACSEC_NUM_AN; ++i) {
853 rx_sa = rx_sc->rx_sa[i];
857 mlx5e_macsec_cleanup_sa(macsec, rx_sa, false);
858 mlx5_destroy_encryption_key(macsec->mdev, rx_sa->enc_key_id);
861 rx_sc->rx_sa[i] = NULL;
865 * At this point the relevant MACsec offload Rx rule already removed at
866 * mlx5e_macsec_cleanup_sa need to wait for datapath to finish current
867 * Rx related data propagating using xa_erase which uses rcu to sync,
868 * once fs_id is erased then this rx_sc is hidden from datapath.
870 list_del_rcu(&rx_sc->rx_sc_list_element);
871 xa_erase(&macsec->sc_xarray, rx_sc->sc_xarray_element->fs_id);
872 metadata_dst_free(rx_sc->md_dst);
873 kfree(rx_sc->sc_xarray_element);
878 mutex_unlock(&macsec->lock);
883 static int mlx5e_macsec_add_rxsa(struct macsec_context *ctx)
885 const struct macsec_rx_sa *ctx_rx_sa = ctx->sa.rx_sa;
886 struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
887 struct mlx5e_macsec_device *macsec_device;
888 struct mlx5_core_dev *mdev = priv->mdev;
889 u8 assoc_num = ctx->sa.assoc_num;
890 struct mlx5e_macsec_rx_sc *rx_sc;
891 sci_t sci = ctx_rx_sa->sc->sci;
892 struct mlx5e_macsec_sa *rx_sa;
893 struct mlx5e_macsec *macsec;
894 struct list_head *list;
897 mutex_lock(&priv->macsec->lock);
899 macsec = priv->macsec;
900 macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
901 if (!macsec_device) {
902 netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
907 list = &macsec_device->macsec_rx_sc_list_head;
908 rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, sci);
910 netdev_err(ctx->netdev,
911 "MACsec offload rx_sc sci %lld doesn't exist\n",
912 ctx->sa.rx_sa->sc->sci);
917 if (rx_sc->rx_sa[assoc_num]) {
918 netdev_err(ctx->netdev,
919 "MACsec offload rx_sc sci %lld rx_sa %d already exist\n",
925 rx_sa = kzalloc(sizeof(*rx_sa), GFP_KERNEL);
931 rx_sa->active = ctx_rx_sa->active;
932 rx_sa->next_pn = ctx_rx_sa->next_pn;
934 rx_sa->assoc_num = assoc_num;
935 rx_sa->fs_id = rx_sc->sc_xarray_element->fs_id;
938 update_macsec_epn(rx_sa, &ctx_rx_sa->key, &ctx_rx_sa->next_pn_halves);
940 err = mlx5_create_encryption_key(mdev, ctx->sa.key, ctx->secy->key_len,
941 MLX5_ACCEL_OBJ_MACSEC_KEY,
946 rx_sc->rx_sa[assoc_num] = rx_sa;
950 //TODO - add support for both authentication and encryption flows
951 err = mlx5e_macsec_init_sa(ctx, rx_sa, true, false);
953 goto destroy_encryption_key;
957 destroy_encryption_key:
958 rx_sc->rx_sa[assoc_num] = NULL;
959 mlx5_destroy_encryption_key(mdev, rx_sa->enc_key_id);
963 mutex_unlock(&macsec->lock);
968 static int mlx5e_macsec_upd_rxsa(struct macsec_context *ctx)
970 const struct macsec_rx_sa *ctx_rx_sa = ctx->sa.rx_sa;
971 struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
972 struct mlx5e_macsec_device *macsec_device;
973 u8 assoc_num = ctx->sa.assoc_num;
974 struct mlx5e_macsec_rx_sc *rx_sc;
975 sci_t sci = ctx_rx_sa->sc->sci;
976 struct mlx5e_macsec_sa *rx_sa;
977 struct mlx5e_macsec *macsec;
978 struct list_head *list;
981 mutex_lock(&priv->macsec->lock);
983 macsec = priv->macsec;
984 macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
985 if (!macsec_device) {
986 netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
991 list = &macsec_device->macsec_rx_sc_list_head;
992 rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, sci);
994 netdev_err(ctx->netdev,
995 "MACsec offload rx_sc sci %lld doesn't exist\n",
996 ctx->sa.rx_sa->sc->sci);
1001 rx_sa = rx_sc->rx_sa[assoc_num];
1003 netdev_err(ctx->netdev,
1004 "MACsec offload rx_sc sci %lld rx_sa %d already exist\n",
1010 if (rx_sa->next_pn != ctx_rx_sa->next_pn_halves.lower) {
1011 netdev_err(ctx->netdev,
1012 "MACsec offload update RX sa %d PN isn't supported\n",
1018 err = mlx5e_macsec_update_rx_sa(macsec, rx_sa, ctx_rx_sa->active);
1020 mutex_unlock(&macsec->lock);
1025 static int mlx5e_macsec_del_rxsa(struct macsec_context *ctx)
1027 struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
1028 struct mlx5e_macsec_device *macsec_device;
1029 sci_t sci = ctx->sa.rx_sa->sc->sci;
1030 struct mlx5e_macsec_rx_sc *rx_sc;
1031 u8 assoc_num = ctx->sa.assoc_num;
1032 struct mlx5e_macsec_sa *rx_sa;
1033 struct mlx5e_macsec *macsec;
1034 struct list_head *list;
1037 mutex_lock(&priv->macsec->lock);
1039 macsec = priv->macsec;
1040 macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
1041 if (!macsec_device) {
1042 netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
1047 list = &macsec_device->macsec_rx_sc_list_head;
1048 rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, sci);
1050 netdev_err(ctx->netdev,
1051 "MACsec offload rx_sc sci %lld doesn't exist\n",
1052 ctx->sa.rx_sa->sc->sci);
1057 rx_sa = rx_sc->rx_sa[assoc_num];
1059 netdev_err(ctx->netdev,
1060 "MACsec offload rx_sc sci %lld rx_sa %d already exist\n",
1066 mlx5e_macsec_cleanup_sa(macsec, rx_sa, false);
1067 mlx5_destroy_encryption_key(macsec->mdev, rx_sa->enc_key_id);
1069 rx_sc->rx_sa[assoc_num] = NULL;
1072 mutex_unlock(&macsec->lock);
1077 static int mlx5e_macsec_add_secy(struct macsec_context *ctx)
1079 struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
1080 const struct net_device *dev = ctx->secy->netdev;
1081 const struct net_device *netdev = ctx->netdev;
1082 struct mlx5e_macsec_device *macsec_device;
1083 struct mlx5e_macsec *macsec;
1086 if (!mlx5e_macsec_secy_features_validate(ctx))
1089 mutex_lock(&priv->macsec->lock);
1090 macsec = priv->macsec;
1091 if (mlx5e_macsec_get_macsec_device_context(macsec, ctx)) {
1092 netdev_err(netdev, "MACsec offload: MACsec net_device already exist\n");
1096 if (macsec->num_of_devices >= MLX5_MACSEC_NUM_OF_SUPPORTED_INTERFACES) {
1097 netdev_err(netdev, "Currently, only %d MACsec offload devices can be set\n",
1098 MLX5_MACSEC_NUM_OF_SUPPORTED_INTERFACES);
1103 macsec_device = kzalloc(sizeof(*macsec_device), GFP_KERNEL);
1104 if (!macsec_device) {
1109 macsec_device->dev_addr = kmemdup(dev->dev_addr, dev->addr_len, GFP_KERNEL);
1110 if (!macsec_device->dev_addr) {
1111 kfree(macsec_device);
1116 macsec_device->netdev = dev;
1118 INIT_LIST_HEAD_RCU(&macsec_device->macsec_rx_sc_list_head);
1119 list_add_rcu(&macsec_device->macsec_device_list_element, &macsec->macsec_device_list_head);
1121 ++macsec->num_of_devices;
1123 mutex_unlock(&macsec->lock);
1128 static int macsec_upd_secy_hw_address(struct macsec_context *ctx,
1129 struct mlx5e_macsec_device *macsec_device)
1131 struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
1132 const struct net_device *dev = ctx->secy->netdev;
1133 struct mlx5e_macsec *macsec = priv->macsec;
1134 struct mlx5e_macsec_rx_sc *rx_sc, *tmp;
1135 struct mlx5e_macsec_sa *rx_sa;
1136 struct list_head *list;
1140 list = &macsec_device->macsec_rx_sc_list_head;
1141 list_for_each_entry_safe(rx_sc, tmp, list, rx_sc_list_element) {
1142 for (i = 0; i < MACSEC_NUM_AN; ++i) {
1143 rx_sa = rx_sc->rx_sa[i];
1144 if (!rx_sa || !rx_sa->macsec_rule)
1147 mlx5e_macsec_cleanup_sa(macsec, rx_sa, false);
1151 list_for_each_entry_safe(rx_sc, tmp, list, rx_sc_list_element) {
1152 for (i = 0; i < MACSEC_NUM_AN; ++i) {
1153 rx_sa = rx_sc->rx_sa[i];
1157 if (rx_sa->active) {
1158 err = mlx5e_macsec_init_sa(ctx, rx_sa, false, false);
1165 memcpy(macsec_device->dev_addr, dev->dev_addr, dev->addr_len);
1170 /* this function is called from 2 macsec ops functions:
1171 * macsec_set_mac_address – MAC address was changed, therefore we need to destroy
1172 * and create new Tx contexts(macsec object + steering).
1173 * macsec_changelink – in this case the tx SC or SecY may be changed, therefore need to
1174 * destroy Tx and Rx contexts(macsec object + steering)
1176 static int mlx5e_macsec_upd_secy(struct macsec_context *ctx)
1178 const struct macsec_tx_sc *tx_sc = &ctx->secy->tx_sc;
1179 struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
1180 const struct net_device *dev = ctx->secy->netdev;
1181 struct mlx5e_macsec_device *macsec_device;
1182 struct mlx5e_macsec_sa *tx_sa;
1183 struct mlx5e_macsec *macsec;
1186 if (!mlx5e_macsec_secy_features_validate(ctx))
1189 mutex_lock(&priv->macsec->lock);
1191 macsec = priv->macsec;
1192 macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
1193 if (!macsec_device) {
1194 netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
1199 /* if the dev_addr hasn't change, it mean the callback is from macsec_changelink */
1200 if (!memcmp(macsec_device->dev_addr, dev->dev_addr, dev->addr_len)) {
1201 err = macsec_upd_secy_hw_address(ctx, macsec_device);
1206 for (i = 0; i < MACSEC_NUM_AN; ++i) {
1207 tx_sa = macsec_device->tx_sa[i];
1211 mlx5e_macsec_cleanup_sa(macsec, tx_sa, true);
1214 for (i = 0; i < MACSEC_NUM_AN; ++i) {
1215 tx_sa = macsec_device->tx_sa[i];
1219 if (tx_sa->assoc_num == tx_sc->encoding_sa && tx_sa->active) {
1220 err = mlx5e_macsec_init_sa(ctx, tx_sa, tx_sc->encrypt, true);
1227 mutex_unlock(&macsec->lock);
1232 static int mlx5e_macsec_del_secy(struct macsec_context *ctx)
1234 struct mlx5e_priv *priv = netdev_priv(ctx->netdev);
1235 struct mlx5e_macsec_device *macsec_device;
1236 struct mlx5e_macsec_rx_sc *rx_sc, *tmp;
1237 struct mlx5e_macsec_sa *rx_sa;
1238 struct mlx5e_macsec_sa *tx_sa;
1239 struct mlx5e_macsec *macsec;
1240 struct list_head *list;
1244 mutex_lock(&priv->macsec->lock);
1245 macsec = priv->macsec;
1246 macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx);
1247 if (!macsec_device) {
1248 netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n");
1254 for (i = 0; i < MACSEC_NUM_AN; ++i) {
1255 tx_sa = macsec_device->tx_sa[i];
1259 mlx5e_macsec_cleanup_sa(macsec, tx_sa, true);
1260 mlx5_destroy_encryption_key(macsec->mdev, tx_sa->enc_key_id);
1262 macsec_device->tx_sa[i] = NULL;
1265 list = &macsec_device->macsec_rx_sc_list_head;
1266 list_for_each_entry_safe(rx_sc, tmp, list, rx_sc_list_element) {
1267 for (i = 0; i < MACSEC_NUM_AN; ++i) {
1268 rx_sa = rx_sc->rx_sa[i];
1272 mlx5e_macsec_cleanup_sa(macsec, rx_sa, false);
1273 mlx5_destroy_encryption_key(macsec->mdev, rx_sa->enc_key_id);
1275 rx_sc->rx_sa[i] = NULL;
1278 list_del_rcu(&rx_sc->rx_sc_list_element);
1283 kfree(macsec_device->dev_addr);
1284 macsec_device->dev_addr = NULL;
1286 list_del_rcu(&macsec_device->macsec_device_list_element);
1287 --macsec->num_of_devices;
1290 mutex_unlock(&macsec->lock);
1295 static void macsec_build_accel_attrs(struct mlx5e_macsec_sa *sa,
1296 struct mlx5_macsec_obj_attrs *attrs)
1298 attrs->epn_state.epn_msb = sa->epn_state.epn_msb;
1299 attrs->epn_state.overlap = sa->epn_state.overlap;
1302 static void macsec_aso_build_wqe_ctrl_seg(struct mlx5e_macsec_aso *macsec_aso,
1303 struct mlx5_wqe_aso_ctrl_seg *aso_ctrl,
1304 struct mlx5_aso_ctrl_param *param)
1306 memset(aso_ctrl, 0, sizeof(*aso_ctrl));
1307 if (macsec_aso->umr->dma_addr) {
1308 aso_ctrl->va_l = cpu_to_be32(macsec_aso->umr->dma_addr | ASO_CTRL_READ_EN);
1309 aso_ctrl->va_h = cpu_to_be32((u64)macsec_aso->umr->dma_addr >> 32);
1310 aso_ctrl->l_key = cpu_to_be32(macsec_aso->umr->mkey);
1316 aso_ctrl->data_mask_mode = param->data_mask_mode << 6;
1317 aso_ctrl->condition_1_0_operand = param->condition_1_operand |
1318 param->condition_0_operand << 4;
1319 aso_ctrl->condition_1_0_offset = param->condition_1_offset |
1320 param->condition_0_offset << 4;
1321 aso_ctrl->data_offset_condition_operand = param->data_offset |
1322 param->condition_operand << 6;
1323 aso_ctrl->condition_0_data = cpu_to_be32(param->condition_0_data);
1324 aso_ctrl->condition_0_mask = cpu_to_be32(param->condition_0_mask);
1325 aso_ctrl->condition_1_data = cpu_to_be32(param->condition_1_data);
1326 aso_ctrl->condition_1_mask = cpu_to_be32(param->condition_1_mask);
1327 aso_ctrl->bitwise_data = cpu_to_be64(param->bitwise_data);
1328 aso_ctrl->data_mask = cpu_to_be64(param->data_mask);
1331 static int mlx5e_macsec_modify_obj(struct mlx5_core_dev *mdev, struct mlx5_macsec_obj_attrs *attrs,
1334 u32 in[MLX5_ST_SZ_DW(modify_macsec_obj_in)] = {};
1335 u32 out[MLX5_ST_SZ_DW(query_macsec_obj_out)];
1336 u64 modify_field_select = 0;
1340 /* General object fields set */
1341 MLX5_SET(general_obj_in_cmd_hdr, in, opcode, MLX5_CMD_OP_QUERY_GENERAL_OBJECT);
1342 MLX5_SET(general_obj_in_cmd_hdr, in, obj_type, MLX5_GENERAL_OBJECT_TYPES_MACSEC);
1343 MLX5_SET(general_obj_in_cmd_hdr, in, obj_id, macsec_id);
1344 err = mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out));
1346 mlx5_core_err(mdev, "Query MACsec object failed (Object id %d), err = %d\n",
1351 obj = MLX5_ADDR_OF(query_macsec_obj_out, out, macsec_object);
1352 modify_field_select = MLX5_GET64(macsec_offload_obj, obj, modify_field_select);
1355 if (!(modify_field_select & MLX5_MODIFY_MACSEC_BITMASK_EPN_OVERLAP) ||
1356 !(modify_field_select & MLX5_MODIFY_MACSEC_BITMASK_EPN_MSB)) {
1357 mlx5_core_dbg(mdev, "MACsec object field is not modifiable (Object id %d)\n",
1362 obj = MLX5_ADDR_OF(modify_macsec_obj_in, in, macsec_object);
1363 MLX5_SET64(macsec_offload_obj, obj, modify_field_select,
1364 MLX5_MODIFY_MACSEC_BITMASK_EPN_OVERLAP | MLX5_MODIFY_MACSEC_BITMASK_EPN_MSB);
1365 MLX5_SET(macsec_offload_obj, obj, epn_msb, attrs->epn_state.epn_msb);
1366 MLX5_SET(macsec_offload_obj, obj, epn_overlap, attrs->epn_state.overlap);
1368 /* General object fields set */
1369 MLX5_SET(general_obj_in_cmd_hdr, in, opcode, MLX5_CMD_OP_MODIFY_GENERAL_OBJECT);
1371 return mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out));
1374 static void macsec_aso_build_ctrl(struct mlx5e_macsec_aso *aso,
1375 struct mlx5_wqe_aso_ctrl_seg *aso_ctrl,
1376 struct mlx5e_macsec_aso_in *in)
1378 struct mlx5_aso_ctrl_param param = {};
1380 param.data_mask_mode = MLX5_ASO_DATA_MASK_MODE_BITWISE_64BIT;
1381 param.condition_0_operand = MLX5_ASO_ALWAYS_TRUE;
1382 param.condition_1_operand = MLX5_ASO_ALWAYS_TRUE;
1383 if (in->mode == MLX5_MACSEC_EPN) {
1384 param.data_offset = MLX5_MACSEC_ASO_REMOVE_FLOW_PKT_CNT_OFFSET;
1385 param.bitwise_data = BIT_ULL(54);
1386 param.data_mask = param.bitwise_data;
1388 macsec_aso_build_wqe_ctrl_seg(aso, aso_ctrl, ¶m);
1391 static int macsec_aso_set_arm_event(struct mlx5_core_dev *mdev, struct mlx5e_macsec *macsec,
1392 struct mlx5e_macsec_aso_in *in)
1394 struct mlx5e_macsec_aso *aso;
1395 struct mlx5_aso_wqe *aso_wqe;
1396 struct mlx5_aso *maso;
1402 mutex_lock(&aso->aso_lock);
1403 aso_wqe = mlx5_aso_get_wqe(maso);
1404 mlx5_aso_build_wqe(maso, MLX5_MACSEC_ASO_DS_CNT, aso_wqe, in->obj_id,
1405 MLX5_ACCESS_ASO_OPC_MOD_MACSEC);
1406 macsec_aso_build_ctrl(aso, &aso_wqe->aso_ctrl, in);
1407 mlx5_aso_post_wqe(maso, false, &aso_wqe->ctrl);
1408 err = mlx5_aso_poll_cq(maso, false);
1409 mutex_unlock(&aso->aso_lock);
1414 static int macsec_aso_query(struct mlx5_core_dev *mdev, struct mlx5e_macsec *macsec,
1415 struct mlx5e_macsec_aso_in *in, struct mlx5e_macsec_aso_out *out)
1417 struct mlx5e_macsec_aso *aso;
1418 struct mlx5_aso_wqe *aso_wqe;
1419 struct mlx5_aso *maso;
1425 mutex_lock(&aso->aso_lock);
1427 aso_wqe = mlx5_aso_get_wqe(maso);
1428 mlx5_aso_build_wqe(maso, MLX5_MACSEC_ASO_DS_CNT, aso_wqe, in->obj_id,
1429 MLX5_ACCESS_ASO_OPC_MOD_MACSEC);
1430 macsec_aso_build_wqe_ctrl_seg(aso, &aso_wqe->aso_ctrl, NULL);
1432 mlx5_aso_post_wqe(maso, false, &aso_wqe->ctrl);
1433 err = mlx5_aso_poll_cq(maso, false);
1437 if (MLX5_GET(macsec_aso, aso->umr->ctx, epn_event_arm))
1438 out->event_arm |= MLX5E_ASO_EPN_ARM;
1440 out->mode_param = MLX5_GET(macsec_aso, aso->umr->ctx, mode_parameter);
1443 mutex_unlock(&aso->aso_lock);
1447 static struct mlx5e_macsec_sa *get_macsec_tx_sa_from_obj_id(const struct mlx5e_macsec *macsec,
1450 const struct list_head *device_list;
1451 struct mlx5e_macsec_sa *macsec_sa;
1452 struct mlx5e_macsec_device *iter;
1455 device_list = &macsec->macsec_device_list_head;
1457 list_for_each_entry(iter, device_list, macsec_device_list_element) {
1458 for (i = 0; i < MACSEC_NUM_AN; ++i) {
1459 macsec_sa = iter->tx_sa[i];
1460 if (!macsec_sa || !macsec_sa->active)
1462 if (macsec_sa->macsec_obj_id == obj_id)
1470 static struct mlx5e_macsec_sa *get_macsec_rx_sa_from_obj_id(const struct mlx5e_macsec *macsec,
1473 const struct list_head *device_list, *sc_list;
1474 struct mlx5e_macsec_rx_sc *mlx5e_rx_sc;
1475 struct mlx5e_macsec_sa *macsec_sa;
1476 struct mlx5e_macsec_device *iter;
1479 device_list = &macsec->macsec_device_list_head;
1481 list_for_each_entry(iter, device_list, macsec_device_list_element) {
1482 sc_list = &iter->macsec_rx_sc_list_head;
1483 list_for_each_entry(mlx5e_rx_sc, sc_list, rx_sc_list_element) {
1484 for (i = 0; i < MACSEC_NUM_AN; ++i) {
1485 macsec_sa = mlx5e_rx_sc->rx_sa[i];
1486 if (!macsec_sa || !macsec_sa->active)
1488 if (macsec_sa->macsec_obj_id == obj_id)
1497 static void macsec_epn_update(struct mlx5e_macsec *macsec, struct mlx5_core_dev *mdev,
1498 struct mlx5e_macsec_sa *sa, u32 obj_id, u32 mode_param)
1500 struct mlx5_macsec_obj_attrs attrs = {};
1501 struct mlx5e_macsec_aso_in in = {};
1503 /* When the bottom of the replay protection window (mode_param) crosses 2^31 (half sequence
1504 * number wraparound) hence mode_param > MLX5_MACSEC_EPN_SCOPE_MID the SW should update the
1505 * esn_overlap to OLD (1).
1506 * When the bottom of the replay protection window (mode_param) crosses 2^32 (full sequence
1507 * number wraparound) hence mode_param < MLX5_MACSEC_EPN_SCOPE_MID since it did a
1508 * wraparound, the SW should update the esn_overlap to NEW (0), and increment the esn_msb.
1511 if (mode_param < MLX5_MACSEC_EPN_SCOPE_MID) {
1512 sa->epn_state.epn_msb++;
1513 sa->epn_state.overlap = 0;
1515 sa->epn_state.overlap = 1;
1518 macsec_build_accel_attrs(sa, &attrs);
1519 mlx5e_macsec_modify_obj(mdev, &attrs, obj_id);
1521 /* Re-set EPN arm event */
1523 in.mode = MLX5_MACSEC_EPN;
1524 macsec_aso_set_arm_event(mdev, macsec, &in);
1527 static void macsec_async_event(struct work_struct *work)
1529 struct mlx5e_macsec_async_work *async_work;
1530 struct mlx5e_macsec_aso_out out = {};
1531 struct mlx5e_macsec_aso_in in = {};
1532 struct mlx5e_macsec_sa *macsec_sa;
1533 struct mlx5e_macsec *macsec;
1534 struct mlx5_core_dev *mdev;
1537 async_work = container_of(work, struct mlx5e_macsec_async_work, work);
1538 macsec = async_work->macsec;
1539 mdev = async_work->mdev;
1540 obj_id = async_work->obj_id;
1541 macsec_sa = get_macsec_tx_sa_from_obj_id(macsec, obj_id);
1543 macsec_sa = get_macsec_rx_sa_from_obj_id(macsec, obj_id);
1545 mlx5_core_dbg(mdev, "MACsec SA is not found (SA object id %d)\n", obj_id);
1546 goto out_async_work;
1550 /* Query MACsec ASO context */
1552 macsec_aso_query(mdev, macsec, &in, &out);
1555 if (macsec_sa->epn_state.epn_enabled && !(out.event_arm & MLX5E_ASO_EPN_ARM))
1556 macsec_epn_update(macsec, mdev, macsec_sa, obj_id, out.mode_param);
1562 static int macsec_obj_change_event(struct notifier_block *nb, unsigned long event, void *data)
1564 struct mlx5e_macsec *macsec = container_of(nb, struct mlx5e_macsec, nb);
1565 struct mlx5e_macsec_async_work *async_work;
1566 struct mlx5_eqe_obj_change *obj_change;
1567 struct mlx5_eqe *eqe = data;
1571 if (event != MLX5_EVENT_TYPE_OBJECT_CHANGE)
1574 obj_change = &eqe->data.obj_change;
1575 obj_type = be16_to_cpu(obj_change->obj_type);
1576 obj_id = be32_to_cpu(obj_change->obj_id);
1578 if (obj_type != MLX5_GENERAL_OBJECT_TYPES_MACSEC)
1581 async_work = kzalloc(sizeof(*async_work), GFP_ATOMIC);
1585 async_work->macsec = macsec;
1586 async_work->mdev = macsec->mdev;
1587 async_work->obj_id = obj_id;
1589 INIT_WORK(&async_work->work, macsec_async_event);
1591 WARN_ON(!queue_work(macsec->wq, &async_work->work));
1596 static int mlx5e_macsec_aso_init(struct mlx5e_macsec_aso *aso, struct mlx5_core_dev *mdev)
1598 struct mlx5_aso *maso;
1601 err = mlx5_core_alloc_pd(mdev, &aso->pdn);
1604 "MACsec offload: Failed to alloc pd for MACsec ASO, err=%d\n",
1609 maso = mlx5_aso_create(mdev, aso->pdn);
1611 err = PTR_ERR(maso);
1615 err = mlx5e_macsec_aso_reg_mr(mdev, aso);
1619 mutex_init(&aso->aso_lock);
1626 mlx5_aso_destroy(maso);
1628 mlx5_core_dealloc_pd(mdev, aso->pdn);
1632 static void mlx5e_macsec_aso_cleanup(struct mlx5e_macsec_aso *aso, struct mlx5_core_dev *mdev)
1637 mlx5e_macsec_aso_dereg_mr(mdev, aso);
1639 mlx5_aso_destroy(aso->maso);
1641 mlx5_core_dealloc_pd(mdev, aso->pdn);
1644 bool mlx5e_is_macsec_device(const struct mlx5_core_dev *mdev)
1646 if (!(MLX5_CAP_GEN_64(mdev, general_obj_types) &
1647 MLX5_GENERAL_OBJ_TYPES_CAP_MACSEC_OFFLOAD))
1650 if (!MLX5_CAP_GEN(mdev, log_max_dek))
1653 if (!MLX5_CAP_MACSEC(mdev, log_max_macsec_offload))
1656 if (!MLX5_CAP_FLOWTABLE_NIC_RX(mdev, macsec_decrypt) ||
1657 !MLX5_CAP_FLOWTABLE_NIC_RX(mdev, reformat_remove_macsec))
1660 if (!MLX5_CAP_FLOWTABLE_NIC_TX(mdev, macsec_encrypt) ||
1661 !MLX5_CAP_FLOWTABLE_NIC_TX(mdev, reformat_add_macsec))
1664 if (!MLX5_CAP_MACSEC(mdev, macsec_crypto_esp_aes_gcm_128_encrypt) &&
1665 !MLX5_CAP_MACSEC(mdev, macsec_crypto_esp_aes_gcm_256_encrypt))
1668 if (!MLX5_CAP_MACSEC(mdev, macsec_crypto_esp_aes_gcm_128_decrypt) &&
1669 !MLX5_CAP_MACSEC(mdev, macsec_crypto_esp_aes_gcm_256_decrypt))
1675 void mlx5e_macsec_get_stats_fill(struct mlx5e_macsec *macsec, void *macsec_stats)
1677 mlx5e_macsec_fs_get_stats_fill(macsec->macsec_fs, macsec_stats);
1680 struct mlx5e_macsec_stats *mlx5e_macsec_get_stats(struct mlx5e_macsec *macsec)
1685 return &macsec->stats;
1688 static const struct macsec_ops macsec_offload_ops = {
1689 .mdo_add_txsa = mlx5e_macsec_add_txsa,
1690 .mdo_upd_txsa = mlx5e_macsec_upd_txsa,
1691 .mdo_del_txsa = mlx5e_macsec_del_txsa,
1692 .mdo_add_rxsc = mlx5e_macsec_add_rxsc,
1693 .mdo_upd_rxsc = mlx5e_macsec_upd_rxsc,
1694 .mdo_del_rxsc = mlx5e_macsec_del_rxsc,
1695 .mdo_add_rxsa = mlx5e_macsec_add_rxsa,
1696 .mdo_upd_rxsa = mlx5e_macsec_upd_rxsa,
1697 .mdo_del_rxsa = mlx5e_macsec_del_rxsa,
1698 .mdo_add_secy = mlx5e_macsec_add_secy,
1699 .mdo_upd_secy = mlx5e_macsec_upd_secy,
1700 .mdo_del_secy = mlx5e_macsec_del_secy,
1703 bool mlx5e_macsec_handle_tx_skb(struct mlx5e_macsec *macsec, struct sk_buff *skb)
1705 struct metadata_dst *md_dst = skb_metadata_dst(skb);
1708 fs_id = mlx5e_macsec_get_sa_from_hashtable(&macsec->sci_hash, &md_dst->u.macsec_info.sci);
1715 dev_kfree_skb_any(skb);
1719 void mlx5e_macsec_tx_build_eseg(struct mlx5e_macsec *macsec,
1720 struct sk_buff *skb,
1721 struct mlx5_wqe_eth_seg *eseg)
1723 struct metadata_dst *md_dst = skb_metadata_dst(skb);
1726 fs_id = mlx5e_macsec_get_sa_from_hashtable(&macsec->sci_hash, &md_dst->u.macsec_info.sci);
1730 eseg->flow_table_metadata = cpu_to_be32(MLX5_ETH_WQE_FT_META_MACSEC | fs_id << 2);
1733 void mlx5e_macsec_offload_handle_rx_skb(struct net_device *netdev,
1734 struct sk_buff *skb,
1735 struct mlx5_cqe64 *cqe)
1737 struct mlx5e_macsec_rx_sc_xarray_element *sc_xarray_element;
1738 u32 macsec_meta_data = be32_to_cpu(cqe->ft_metadata);
1739 struct mlx5e_priv *priv = netdev_priv(netdev);
1740 struct mlx5e_macsec_rx_sc *rx_sc;
1741 struct mlx5e_macsec *macsec;
1744 macsec = priv->macsec;
1748 fs_id = MLX5_MACSEC_METADATA_HANDLE(macsec_meta_data);
1751 sc_xarray_element = xa_load(&macsec->sc_xarray, fs_id);
1752 rx_sc = sc_xarray_element->rx_sc;
1754 dst_hold(&rx_sc->md_dst->dst);
1755 skb_dst_set(skb, &rx_sc->md_dst->dst);
1761 void mlx5e_macsec_build_netdev(struct mlx5e_priv *priv)
1763 struct net_device *netdev = priv->netdev;
1765 if (!mlx5e_is_macsec_device(priv->mdev))
1769 mlx5_core_dbg(priv->mdev, "mlx5e: MACsec acceleration enabled\n");
1770 netdev->macsec_ops = &macsec_offload_ops;
1771 netdev->features |= NETIF_F_HW_MACSEC;
1772 netif_keep_dst(netdev);
1775 int mlx5e_macsec_init(struct mlx5e_priv *priv)
1777 struct mlx5_core_dev *mdev = priv->mdev;
1778 struct mlx5e_macsec *macsec = NULL;
1779 struct mlx5e_macsec_fs *macsec_fs;
1782 if (!mlx5e_is_macsec_device(priv->mdev)) {
1783 mlx5_core_dbg(mdev, "Not a MACsec offload device\n");
1787 macsec = kzalloc(sizeof(*macsec), GFP_KERNEL);
1791 INIT_LIST_HEAD(&macsec->macsec_device_list_head);
1792 mutex_init(&macsec->lock);
1794 err = rhashtable_init(&macsec->sci_hash, &rhash_sci);
1796 mlx5_core_err(mdev, "MACsec offload: Failed to init SCI hash table, err=%d\n",
1801 err = mlx5e_macsec_aso_init(&macsec->aso, priv->mdev);
1803 mlx5_core_err(mdev, "MACsec offload: Failed to init aso, err=%d\n", err);
1807 macsec->wq = alloc_ordered_workqueue("mlx5e_macsec_%s", 0, priv->netdev->name);
1813 xa_init_flags(&macsec->sc_xarray, XA_FLAGS_ALLOC1);
1815 priv->macsec = macsec;
1817 macsec->mdev = mdev;
1819 macsec_fs = mlx5e_macsec_fs_init(mdev, priv->netdev);
1825 macsec->macsec_fs = macsec_fs;
1827 macsec->nb.notifier_call = macsec_obj_change_event;
1828 mlx5_notifier_register(mdev, &macsec->nb);
1830 mlx5_core_dbg(mdev, "MACsec attached to netdevice\n");
1835 destroy_workqueue(macsec->wq);
1837 mlx5e_macsec_aso_cleanup(&macsec->aso, priv->mdev);
1839 rhashtable_destroy(&macsec->sci_hash);
1842 priv->macsec = NULL;
1846 void mlx5e_macsec_cleanup(struct mlx5e_priv *priv)
1848 struct mlx5e_macsec *macsec = priv->macsec;
1849 struct mlx5_core_dev *mdev = macsec->mdev;
1854 mlx5_notifier_unregister(mdev, &macsec->nb);
1856 mlx5e_macsec_fs_cleanup(macsec->macsec_fs);
1858 /* Cleanup workqueue */
1859 destroy_workqueue(macsec->wq);
1861 mlx5e_macsec_aso_cleanup(&macsec->aso, mdev);
1863 priv->macsec = NULL;
1865 rhashtable_destroy(&macsec->sci_hash);
1867 mutex_destroy(&macsec->lock);