| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Lior Nahmanson | 4932 | 56.69% | 8 | 11.27% |
| Emeel Hakim | 2865 | 32.93% | 15 | 21.13% |
| Raed Salem | 213 | 2.45% | 8 | 11.27% |
| Patrisious Haddad | 168 | 1.93% | 3 | 4.23% |
| Eli Cohen | 86 | 0.99% | 2 | 2.82% |
| Saeed Mahameed | 80 | 0.92% | 6 | 8.45% |
| Mohamad Haj Yahia | 52 | 0.60% | 1 | 1.41% |
| Hadar Hen Zion | 42 | 0.48% | 1 | 1.41% |
| Jack Morgenstein | 35 | 0.40% | 1 | 1.41% |
| Maor Gottlieb | 35 | 0.40% | 2 | 2.82% |
| Amir Vadai | 30 | 0.34% | 1 | 1.41% |
| Yang Yingliang | 27 | 0.31% | 2 | 2.82% |
| Leon Romanovsky | 24 | 0.28% | 4 | 5.63% |
| Majd Dibbiny | 20 | 0.23% | 2 | 2.82% |
| Achiad Shochat | 15 | 0.17% | 1 | 1.41% |
| Tariq Toukan | 15 | 0.17% | 3 | 4.23% |
| Maxim Mikityanskiy | 12 | 0.14% | 2 | 2.82% |
| Aya Levin | 11 | 0.13% | 1 | 1.41% |
| Jianbo Liu | 9 | 0.10% | 1 | 1.41% |
| Radu Pirea | 6 | 0.07% | 1 | 1.41% |
| Huy Nguyen | 5 | 0.06% | 1 | 1.41% |
| Rahul Rameshbabu | 5 | 0.06% | 1 | 1.41% |
| Ilan Tayari | 5 | 0.06% | 1 | 1.41% |
| Ilya Lesokhin | 5 | 0.06% | 1 | 1.41% |
| Uladzislau Rezki | 2 | 0.02% | 1 | 1.41% |
| Or Gerlitz | 1 | 0.01% | 1 | 1.41% |
| Total | 8700 | 71 |
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB /* Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */ #include <linux/mlx5/device.h> #include <linux/mlx5/mlx5_ifc.h> #include <linux/xarray.h> #include <linux/if_vlan.h> #include "en.h" #include "lib/aso.h" #include "lib/crypto.h" #include "en_accel/macsec.h" #define MLX5_MACSEC_EPN_SCOPE_MID 0x80000000L #define MLX5E_MACSEC_ASO_CTX_SZ MLX5_ST_SZ_BYTES(macsec_aso) enum mlx5_macsec_aso_event_arm { MLX5E_ASO_EPN_ARM = BIT(0), }; enum { MLX5_MACSEC_ASO_REMOVE_FLOW_PKT_CNT_OFFSET, }; struct mlx5e_macsec_handle { struct mlx5e_macsec *macsec; u32 obj_id; u8 idx; }; enum { MLX5_MACSEC_EPN, }; struct mlx5e_macsec_aso_out { u8 event_arm; u32 mode_param; }; struct mlx5e_macsec_aso_in { u8 mode; u32 obj_id; }; struct mlx5e_macsec_epn_state { u32 epn_msb; u8 epn_enabled; u8 overlap; }; struct mlx5e_macsec_async_work { struct mlx5e_macsec *macsec; struct mlx5_core_dev *mdev; struct work_struct work; u32 obj_id; }; struct mlx5e_macsec_sa { bool active; u8 assoc_num; u32 macsec_obj_id; u32 enc_key_id; u32 next_pn; sci_t sci; ssci_t ssci; salt_t salt; union mlx5_macsec_rule *macsec_rule; struct rcu_head rcu_head; struct mlx5e_macsec_epn_state epn_state; }; struct mlx5e_macsec_rx_sc; struct mlx5e_macsec_rx_sc_xarray_element { u32 fs_id; struct mlx5e_macsec_rx_sc *rx_sc; }; struct mlx5e_macsec_rx_sc { bool active; sci_t sci; struct mlx5e_macsec_sa *rx_sa[MACSEC_NUM_AN]; struct list_head rx_sc_list_element; struct mlx5e_macsec_rx_sc_xarray_element *sc_xarray_element; struct metadata_dst *md_dst; struct rcu_head rcu_head; }; struct mlx5e_macsec_umr { u8 __aligned(64) ctx[MLX5_ST_SZ_BYTES(macsec_aso)]; dma_addr_t dma_addr; u32 mkey; }; struct mlx5e_macsec_aso { /* ASO */ struct mlx5_aso *maso; /* Protects macsec ASO */ struct mutex aso_lock; /* UMR */ struct mlx5e_macsec_umr *umr; u32 pdn; }; struct mlx5e_macsec_device { const struct net_device *netdev; struct mlx5e_macsec_sa *tx_sa[MACSEC_NUM_AN]; struct list_head macsec_rx_sc_list_head; unsigned char *dev_addr; struct list_head macsec_device_list_element; }; struct mlx5e_macsec { struct list_head macsec_device_list_head; int num_of_devices; struct mutex lock; /* Protects mlx5e_macsec internal contexts */ /* Rx fs_id -> rx_sc mapping */ struct xarray sc_xarray; struct mlx5_core_dev *mdev; /* ASO */ struct mlx5e_macsec_aso aso; struct notifier_block nb; struct workqueue_struct *wq; }; struct mlx5_macsec_obj_attrs { u32 aso_pdn; u32 next_pn; __be64 sci; u32 enc_key_id; bool encrypt; struct mlx5e_macsec_epn_state epn_state; salt_t salt; __be32 ssci; bool replay_protect; u32 replay_window; }; struct mlx5_aso_ctrl_param { u8 data_mask_mode; u8 condition_0_operand; u8 condition_1_operand; u8 condition_0_offset; u8 condition_1_offset; u8 data_offset; u8 condition_operand; u32 condition_0_data; u32 condition_0_mask; u32 condition_1_data; u32 condition_1_mask; u64 bitwise_data; u64 data_mask; }; static int mlx5e_macsec_aso_reg_mr(struct mlx5_core_dev *mdev, struct mlx5e_macsec_aso *aso) { struct mlx5e_macsec_umr *umr; struct device *dma_device; dma_addr_t dma_addr; int err; umr = kzalloc(sizeof(*umr), GFP_KERNEL); if (!umr) { err = -ENOMEM; return err; } dma_device = mlx5_core_dma_dev(mdev); dma_addr = dma_map_single(dma_device, umr->ctx, sizeof(umr->ctx), DMA_BIDIRECTIONAL); err = dma_mapping_error(dma_device, dma_addr); if (err) { mlx5_core_err(mdev, "Can't map dma device, err=%d\n", err); goto out_dma; } err = mlx5e_create_mkey(mdev, aso->pdn, &umr->mkey); if (err) { mlx5_core_err(mdev, "Can't create mkey, err=%d\n", err); goto out_mkey; } umr->dma_addr = dma_addr; aso->umr = umr; return 0; out_mkey: dma_unmap_single(dma_device, dma_addr, sizeof(umr->ctx), DMA_BIDIRECTIONAL); out_dma: kfree(umr); return err; } static void mlx5e_macsec_aso_dereg_mr(struct mlx5_core_dev *mdev, struct mlx5e_macsec_aso *aso) { struct mlx5e_macsec_umr *umr = aso->umr; mlx5_core_destroy_mkey(mdev, umr->mkey); dma_unmap_single(&mdev->pdev->dev, umr->dma_addr, sizeof(umr->ctx), DMA_BIDIRECTIONAL); kfree(umr); } static int macsec_set_replay_protection(struct mlx5_macsec_obj_attrs *attrs, void *aso_ctx) { u8 window_sz; if (!attrs->replay_protect) return 0; switch (attrs->replay_window) { case 256: window_sz = MLX5_MACSEC_ASO_REPLAY_WIN_256BIT; break; case 128: window_sz = MLX5_MACSEC_ASO_REPLAY_WIN_128BIT; break; case 64: window_sz = MLX5_MACSEC_ASO_REPLAY_WIN_64BIT; break; case 32: window_sz = MLX5_MACSEC_ASO_REPLAY_WIN_32BIT; break; default: return -EINVAL; } MLX5_SET(macsec_aso, aso_ctx, window_size, window_sz); MLX5_SET(macsec_aso, aso_ctx, mode, MLX5_MACSEC_ASO_REPLAY_PROTECTION); return 0; } static int mlx5e_macsec_create_object(struct mlx5_core_dev *mdev, struct mlx5_macsec_obj_attrs *attrs, bool is_tx, u32 *macsec_obj_id) { u32 in[MLX5_ST_SZ_DW(create_macsec_obj_in)] = {}; u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)]; void *aso_ctx; void *obj; int err; obj = MLX5_ADDR_OF(create_macsec_obj_in, in, macsec_object); aso_ctx = MLX5_ADDR_OF(macsec_offload_obj, obj, macsec_aso); MLX5_SET(macsec_offload_obj, obj, confidentiality_en, attrs->encrypt); MLX5_SET(macsec_offload_obj, obj, dekn, attrs->enc_key_id); MLX5_SET(macsec_offload_obj, obj, aso_return_reg, MLX5_MACSEC_ASO_REG_C_4_5); MLX5_SET(macsec_offload_obj, obj, macsec_aso_access_pd, attrs->aso_pdn); MLX5_SET(macsec_aso, aso_ctx, mode_parameter, attrs->next_pn); /* Epn */ if (attrs->epn_state.epn_enabled) { void *salt_p; int i; MLX5_SET(macsec_aso, aso_ctx, epn_event_arm, 1); MLX5_SET(macsec_offload_obj, obj, epn_en, 1); MLX5_SET(macsec_offload_obj, obj, epn_msb, attrs->epn_state.epn_msb); MLX5_SET(macsec_offload_obj, obj, epn_overlap, attrs->epn_state.overlap); MLX5_SET64(macsec_offload_obj, obj, sci, (__force u64)attrs->ssci); salt_p = MLX5_ADDR_OF(macsec_offload_obj, obj, salt); for (i = 0; i < 3 ; i++) memcpy((u32 *)salt_p + i, &attrs->salt.bytes[4 * (2 - i)], 4); } else { MLX5_SET64(macsec_offload_obj, obj, sci, (__force u64)(attrs->sci)); } MLX5_SET(macsec_aso, aso_ctx, valid, 0x1); if (is_tx) { MLX5_SET(macsec_aso, aso_ctx, mode, MLX5_MACSEC_ASO_INC_SN); } else { err = macsec_set_replay_protection(attrs, aso_ctx); if (err) return err; } /* general object fields set */ MLX5_SET(general_obj_in_cmd_hdr, in, opcode, MLX5_CMD_OP_CREATE_GENERAL_OBJECT); MLX5_SET(general_obj_in_cmd_hdr, in, obj_type, MLX5_GENERAL_OBJECT_TYPES_MACSEC); err = mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out)); if (err) { mlx5_core_err(mdev, "MACsec offload: Failed to create MACsec object (err = %d)\n", err); return err; } *macsec_obj_id = MLX5_GET(general_obj_out_cmd_hdr, out, obj_id); return err; } static void mlx5e_macsec_destroy_object(struct mlx5_core_dev *mdev, u32 macsec_obj_id) { u32 in[MLX5_ST_SZ_DW(general_obj_in_cmd_hdr)] = {}; u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)]; MLX5_SET(general_obj_in_cmd_hdr, in, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJECT); MLX5_SET(general_obj_in_cmd_hdr, in, obj_type, MLX5_GENERAL_OBJECT_TYPES_MACSEC); MLX5_SET(general_obj_in_cmd_hdr, in, obj_id, macsec_obj_id); mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out)); } static void mlx5e_macsec_cleanup_sa_fs(struct mlx5e_macsec *macsec, struct mlx5e_macsec_sa *sa, bool is_tx, struct net_device *netdev, u32 fs_id) { int action = (is_tx) ? MLX5_ACCEL_MACSEC_ACTION_ENCRYPT : MLX5_ACCEL_MACSEC_ACTION_DECRYPT; if (!sa->macsec_rule) return; mlx5_macsec_fs_del_rule(macsec->mdev->macsec_fs, sa->macsec_rule, action, netdev, fs_id); sa->macsec_rule = NULL; } static void mlx5e_macsec_cleanup_sa(struct mlx5e_macsec *macsec, struct mlx5e_macsec_sa *sa, bool is_tx, struct net_device *netdev, u32 fs_id) { mlx5e_macsec_cleanup_sa_fs(macsec, sa, is_tx, netdev, fs_id); mlx5e_macsec_destroy_object(macsec->mdev, sa->macsec_obj_id); } static int mlx5e_macsec_init_sa_fs(struct macsec_context *ctx, struct mlx5e_macsec_sa *sa, bool encrypt, bool is_tx, u32 *fs_id) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); struct mlx5_macsec_fs *macsec_fs = priv->mdev->macsec_fs; struct mlx5_macsec_rule_attrs rule_attrs; union mlx5_macsec_rule *macsec_rule; rule_attrs.macsec_obj_id = sa->macsec_obj_id; rule_attrs.sci = sa->sci; rule_attrs.assoc_num = sa->assoc_num; rule_attrs.action = (is_tx) ? MLX5_ACCEL_MACSEC_ACTION_ENCRYPT : MLX5_ACCEL_MACSEC_ACTION_DECRYPT; macsec_rule = mlx5_macsec_fs_add_rule(macsec_fs, ctx, &rule_attrs, fs_id); if (!macsec_rule) return -ENOMEM; sa->macsec_rule = macsec_rule; return 0; } static int mlx5e_macsec_init_sa(struct macsec_context *ctx, struct mlx5e_macsec_sa *sa, bool encrypt, bool is_tx, u32 *fs_id) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); struct mlx5e_macsec *macsec = priv->macsec; struct mlx5_core_dev *mdev = priv->mdev; struct mlx5_macsec_obj_attrs obj_attrs; int err; obj_attrs.next_pn = sa->next_pn; obj_attrs.sci = cpu_to_be64((__force u64)sa->sci); obj_attrs.enc_key_id = sa->enc_key_id; obj_attrs.encrypt = encrypt; obj_attrs.aso_pdn = macsec->aso.pdn; obj_attrs.epn_state = sa->epn_state; if (sa->epn_state.epn_enabled) { obj_attrs.ssci = cpu_to_be32((__force u32)sa->ssci); memcpy(&obj_attrs.salt, &sa->salt, sizeof(sa->salt)); } obj_attrs.replay_window = ctx->secy->replay_window; obj_attrs.replay_protect = ctx->secy->replay_protect; err = mlx5e_macsec_create_object(mdev, &obj_attrs, is_tx, &sa->macsec_obj_id); if (err) return err; if (sa->active) { err = mlx5e_macsec_init_sa_fs(ctx, sa, encrypt, is_tx, fs_id); if (err) goto destroy_macsec_object; } return 0; destroy_macsec_object: mlx5e_macsec_destroy_object(mdev, sa->macsec_obj_id); return err; } static struct mlx5e_macsec_rx_sc * mlx5e_macsec_get_rx_sc_from_sc_list(const struct list_head *list, sci_t sci) { struct mlx5e_macsec_rx_sc *iter; list_for_each_entry_rcu(iter, list, rx_sc_list_element) { if (iter->sci == sci) return iter; } return NULL; } static int macsec_rx_sa_active_update(struct macsec_context *ctx, struct mlx5e_macsec_sa *rx_sa, bool active, u32 *fs_id) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); struct mlx5e_macsec *macsec = priv->macsec; int err = 0; if (rx_sa->active == active) return 0; rx_sa->active = active; if (!active) { mlx5e_macsec_cleanup_sa(macsec, rx_sa, false, ctx->secy->netdev, *fs_id); return 0; } err = mlx5e_macsec_init_sa(ctx, rx_sa, true, false, fs_id); if (err) rx_sa->active = false; return err; } static bool mlx5e_macsec_secy_features_validate(struct macsec_context *ctx) { const struct net_device *netdev = ctx->netdev; const struct macsec_secy *secy = ctx->secy; if (secy->validate_frames != MACSEC_VALIDATE_STRICT) { netdev_err(netdev, "MACsec offload is supported only when validate_frame is in strict mode\n"); return false; } if (secy->icv_len != MACSEC_DEFAULT_ICV_LEN) { netdev_err(netdev, "MACsec offload is supported only when icv_len is %d\n", MACSEC_DEFAULT_ICV_LEN); return false; } if (!secy->protect_frames) { netdev_err(netdev, "MACsec offload is supported only when protect_frames is set\n"); return false; } if (!ctx->secy->tx_sc.encrypt) { netdev_err(netdev, "MACsec offload: encrypt off isn't supported\n"); return false; } return true; } static struct mlx5e_macsec_device * mlx5e_macsec_get_macsec_device_context(const struct mlx5e_macsec *macsec, const struct macsec_context *ctx) { struct mlx5e_macsec_device *iter; const struct list_head *list; list = &macsec->macsec_device_list_head; list_for_each_entry_rcu(iter, list, macsec_device_list_element) { if (iter->netdev == ctx->secy->netdev) return iter; } return NULL; } static void update_macsec_epn(struct mlx5e_macsec_sa *sa, const struct macsec_key *key, const pn_t *next_pn_halves, ssci_t ssci) { struct mlx5e_macsec_epn_state *epn_state = &sa->epn_state; sa->ssci = ssci; sa->salt = key->salt; epn_state->epn_enabled = 1; epn_state->epn_msb = next_pn_halves->upper; epn_state->overlap = next_pn_halves->lower < MLX5_MACSEC_EPN_SCOPE_MID ? 0 : 1; } static int mlx5e_macsec_add_txsa(struct macsec_context *ctx) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); const struct macsec_tx_sc *tx_sc = &ctx->secy->tx_sc; const struct macsec_tx_sa *ctx_tx_sa = ctx->sa.tx_sa; const struct macsec_secy *secy = ctx->secy; struct mlx5e_macsec_device *macsec_device; struct mlx5_core_dev *mdev = priv->mdev; u8 assoc_num = ctx->sa.assoc_num; struct mlx5e_macsec_sa *tx_sa; struct mlx5e_macsec *macsec; int err = 0; mutex_lock(&priv->macsec->lock); macsec = priv->macsec; macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx); if (!macsec_device) { netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n"); err = -EEXIST; goto out; } if (macsec_device->tx_sa[assoc_num]) { netdev_err(ctx->netdev, "MACsec offload tx_sa: %d already exist\n", assoc_num); err = -EEXIST; goto out; } tx_sa = kzalloc(sizeof(*tx_sa), GFP_KERNEL); if (!tx_sa) { err = -ENOMEM; goto out; } tx_sa->active = ctx_tx_sa->active; tx_sa->next_pn = ctx_tx_sa->next_pn_halves.lower; tx_sa->sci = secy->sci; tx_sa->assoc_num = assoc_num; if (secy->xpn) update_macsec_epn(tx_sa, &ctx_tx_sa->key, &ctx_tx_sa->next_pn_halves, ctx_tx_sa->ssci); err = mlx5_create_encryption_key(mdev, ctx->sa.key, secy->key_len, MLX5_ACCEL_OBJ_MACSEC_KEY, &tx_sa->enc_key_id); if (err) goto destroy_sa; macsec_device->tx_sa[assoc_num] = tx_sa; if (!secy->operational) goto out; err = mlx5e_macsec_init_sa(ctx, tx_sa, tx_sc->encrypt, true, NULL); if (err) goto destroy_encryption_key; mutex_unlock(&macsec->lock); return 0; destroy_encryption_key: macsec_device->tx_sa[assoc_num] = NULL; mlx5_destroy_encryption_key(mdev, tx_sa->enc_key_id); destroy_sa: kfree(tx_sa); out: mutex_unlock(&macsec->lock); return err; } static int mlx5e_macsec_upd_txsa(struct macsec_context *ctx) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); const struct macsec_tx_sc *tx_sc = &ctx->secy->tx_sc; const struct macsec_tx_sa *ctx_tx_sa = ctx->sa.tx_sa; struct mlx5e_macsec_device *macsec_device; u8 assoc_num = ctx->sa.assoc_num; struct mlx5e_macsec_sa *tx_sa; struct mlx5e_macsec *macsec; struct net_device *netdev; int err = 0; mutex_lock(&priv->macsec->lock); macsec = priv->macsec; netdev = ctx->netdev; macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx); if (!macsec_device) { netdev_err(netdev, "MACsec offload: Failed to find device context\n"); err = -EINVAL; goto out; } tx_sa = macsec_device->tx_sa[assoc_num]; if (!tx_sa) { netdev_err(netdev, "MACsec offload: TX sa 0x%x doesn't exist\n", assoc_num); err = -EEXIST; goto out; } if (ctx->sa.update_pn) { netdev_err(netdev, "MACsec offload: update TX sa %d PN isn't supported\n", assoc_num); err = -EINVAL; goto out; } if (tx_sa->active == ctx_tx_sa->active) goto out; tx_sa->active = ctx_tx_sa->active; if (tx_sa->assoc_num != tx_sc->encoding_sa) goto out; if (ctx_tx_sa->active) { err = mlx5e_macsec_init_sa_fs(ctx, tx_sa, tx_sc->encrypt, true, NULL); if (err) goto out; } else { if (!tx_sa->macsec_rule) { err = -EINVAL; goto out; } mlx5e_macsec_cleanup_sa_fs(macsec, tx_sa, true, ctx->secy->netdev, 0); } out: mutex_unlock(&macsec->lock); return err; } static int mlx5e_macsec_del_txsa(struct macsec_context *ctx) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); struct mlx5e_macsec_device *macsec_device; u8 assoc_num = ctx->sa.assoc_num; struct mlx5e_macsec_sa *tx_sa; struct mlx5e_macsec *macsec; int err = 0; mutex_lock(&priv->macsec->lock); macsec = priv->macsec; macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx); if (!macsec_device) { netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n"); err = -EINVAL; goto out; } tx_sa = macsec_device->tx_sa[assoc_num]; if (!tx_sa) { netdev_err(ctx->netdev, "MACsec offload: TX sa 0x%x doesn't exist\n", assoc_num); err = -EEXIST; goto out; } mlx5e_macsec_cleanup_sa(macsec, tx_sa, true, ctx->secy->netdev, 0); mlx5_destroy_encryption_key(macsec->mdev, tx_sa->enc_key_id); kfree_rcu_mightsleep(tx_sa); macsec_device->tx_sa[assoc_num] = NULL; out: mutex_unlock(&macsec->lock); return err; } static int mlx5e_macsec_add_rxsc(struct macsec_context *ctx) { struct mlx5e_macsec_rx_sc_xarray_element *sc_xarray_element; struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); const struct macsec_rx_sc *ctx_rx_sc = ctx->rx_sc; struct mlx5e_macsec_device *macsec_device; struct mlx5e_macsec_rx_sc *rx_sc; struct list_head *rx_sc_list; struct mlx5e_macsec *macsec; int err = 0; mutex_lock(&priv->macsec->lock); macsec = priv->macsec; macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx); if (!macsec_device) { netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n"); err = -EINVAL; goto out; } rx_sc_list = &macsec_device->macsec_rx_sc_list_head; rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(rx_sc_list, ctx_rx_sc->sci); if (rx_sc) { netdev_err(ctx->netdev, "MACsec offload: rx_sc (sci %lld) already exists\n", ctx_rx_sc->sci); err = -EEXIST; goto out; } rx_sc = kzalloc(sizeof(*rx_sc), GFP_KERNEL); if (!rx_sc) { err = -ENOMEM; goto out; } sc_xarray_element = kzalloc(sizeof(*sc_xarray_element), GFP_KERNEL); if (!sc_xarray_element) { err = -ENOMEM; goto destroy_rx_sc; } sc_xarray_element->rx_sc = rx_sc; err = xa_alloc(&macsec->sc_xarray, &sc_xarray_element->fs_id, sc_xarray_element, XA_LIMIT(1, MLX5_MACEC_RX_FS_ID_MAX), GFP_KERNEL); if (err) { if (err == -EBUSY) netdev_err(ctx->netdev, "MACsec offload: unable to create entry for RX SC (%d Rx SCs already allocated)\n", MLX5_MACEC_RX_FS_ID_MAX); goto destroy_sc_xarray_elemenet; } rx_sc->md_dst = metadata_dst_alloc(0, METADATA_MACSEC, GFP_KERNEL); if (!rx_sc->md_dst) { err = -ENOMEM; goto erase_xa_alloc; } rx_sc->sci = ctx_rx_sc->sci; rx_sc->active = ctx_rx_sc->active; list_add_rcu(&rx_sc->rx_sc_list_element, rx_sc_list); rx_sc->sc_xarray_element = sc_xarray_element; rx_sc->md_dst->u.macsec_info.sci = rx_sc->sci; mutex_unlock(&macsec->lock); return 0; erase_xa_alloc: xa_erase(&macsec->sc_xarray, sc_xarray_element->fs_id); destroy_sc_xarray_elemenet: kfree(sc_xarray_element); destroy_rx_sc: kfree(rx_sc); out: mutex_unlock(&macsec->lock); return err; } static int mlx5e_macsec_upd_rxsc(struct macsec_context *ctx) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); const struct macsec_rx_sc *ctx_rx_sc = ctx->rx_sc; struct mlx5e_macsec_device *macsec_device; struct mlx5e_macsec_rx_sc *rx_sc; struct mlx5e_macsec_sa *rx_sa; struct mlx5e_macsec *macsec; struct list_head *list; int i; int err = 0; mutex_lock(&priv->macsec->lock); macsec = priv->macsec; macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx); if (!macsec_device) { netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n"); err = -EINVAL; goto out; } list = &macsec_device->macsec_rx_sc_list_head; rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, ctx_rx_sc->sci); if (!rx_sc) { err = -EINVAL; goto out; } if (rx_sc->active == ctx_rx_sc->active) goto out; rx_sc->active = ctx_rx_sc->active; for (i = 0; i < MACSEC_NUM_AN; ++i) { rx_sa = rx_sc->rx_sa[i]; if (!rx_sa) continue; err = macsec_rx_sa_active_update(ctx, rx_sa, rx_sa->active && ctx_rx_sc->active, &rx_sc->sc_xarray_element->fs_id); if (err) goto out; } out: mutex_unlock(&macsec->lock); return err; } static void macsec_del_rxsc_ctx(struct mlx5e_macsec *macsec, struct mlx5e_macsec_rx_sc *rx_sc, struct net_device *netdev) { struct mlx5e_macsec_sa *rx_sa; int i; for (i = 0; i < MACSEC_NUM_AN; ++i) { rx_sa = rx_sc->rx_sa[i]; if (!rx_sa) continue; mlx5e_macsec_cleanup_sa(macsec, rx_sa, false, netdev, rx_sc->sc_xarray_element->fs_id); mlx5_destroy_encryption_key(macsec->mdev, rx_sa->enc_key_id); kfree(rx_sa); rx_sc->rx_sa[i] = NULL; } /* At this point the relevant MACsec offload Rx rule already removed at * mlx5e_macsec_cleanup_sa need to wait for datapath to finish current * Rx related data propagating using xa_erase which uses rcu to sync, * once fs_id is erased then this rx_sc is hidden from datapath. */ list_del_rcu(&rx_sc->rx_sc_list_element); xa_erase(&macsec->sc_xarray, rx_sc->sc_xarray_element->fs_id); metadata_dst_free(rx_sc->md_dst); kfree(rx_sc->sc_xarray_element); kfree_rcu_mightsleep(rx_sc); } static int mlx5e_macsec_del_rxsc(struct macsec_context *ctx) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); struct mlx5e_macsec_device *macsec_device; struct mlx5e_macsec_rx_sc *rx_sc; struct mlx5e_macsec *macsec; struct list_head *list; int err = 0; mutex_lock(&priv->macsec->lock); macsec = priv->macsec; macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx); if (!macsec_device) { netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n"); err = -EINVAL; goto out; } list = &macsec_device->macsec_rx_sc_list_head; rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, ctx->rx_sc->sci); if (!rx_sc) { netdev_err(ctx->netdev, "MACsec offload rx_sc sci %lld doesn't exist\n", ctx->sa.rx_sa->sc->sci); err = -EINVAL; goto out; } macsec_del_rxsc_ctx(macsec, rx_sc, ctx->secy->netdev); out: mutex_unlock(&macsec->lock); return err; } static int mlx5e_macsec_add_rxsa(struct macsec_context *ctx) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); const struct macsec_rx_sa *ctx_rx_sa = ctx->sa.rx_sa; struct mlx5e_macsec_device *macsec_device; struct mlx5_core_dev *mdev = priv->mdev; u8 assoc_num = ctx->sa.assoc_num; struct mlx5e_macsec_rx_sc *rx_sc; sci_t sci = ctx_rx_sa->sc->sci; struct mlx5e_macsec_sa *rx_sa; struct mlx5e_macsec *macsec; struct list_head *list; int err = 0; mutex_lock(&priv->macsec->lock); macsec = priv->macsec; macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx); if (!macsec_device) { netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n"); err = -EINVAL; goto out; } list = &macsec_device->macsec_rx_sc_list_head; rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, sci); if (!rx_sc) { netdev_err(ctx->netdev, "MACsec offload rx_sc sci %lld doesn't exist\n", ctx->sa.rx_sa->sc->sci); err = -EINVAL; goto out; } if (rx_sc->rx_sa[assoc_num]) { netdev_err(ctx->netdev, "MACsec offload rx_sc sci %lld rx_sa %d already exist\n", sci, assoc_num); err = -EEXIST; goto out; } rx_sa = kzalloc(sizeof(*rx_sa), GFP_KERNEL); if (!rx_sa) { err = -ENOMEM; goto out; } rx_sa->active = ctx_rx_sa->active; rx_sa->next_pn = ctx_rx_sa->next_pn; rx_sa->sci = sci; rx_sa->assoc_num = assoc_num; if (ctx->secy->xpn) update_macsec_epn(rx_sa, &ctx_rx_sa->key, &ctx_rx_sa->next_pn_halves, ctx_rx_sa->ssci); err = mlx5_create_encryption_key(mdev, ctx->sa.key, ctx->secy->key_len, MLX5_ACCEL_OBJ_MACSEC_KEY, &rx_sa->enc_key_id); if (err) goto destroy_sa; rx_sc->rx_sa[assoc_num] = rx_sa; if (!rx_sa->active) goto out; //TODO - add support for both authentication and encryption flows err = mlx5e_macsec_init_sa(ctx, rx_sa, true, false, &rx_sc->sc_xarray_element->fs_id); if (err) goto destroy_encryption_key; goto out; destroy_encryption_key: rx_sc->rx_sa[assoc_num] = NULL; mlx5_destroy_encryption_key(mdev, rx_sa->enc_key_id); destroy_sa: kfree(rx_sa); out: mutex_unlock(&macsec->lock); return err; } static int mlx5e_macsec_upd_rxsa(struct macsec_context *ctx) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); const struct macsec_rx_sa *ctx_rx_sa = ctx->sa.rx_sa; struct mlx5e_macsec_device *macsec_device; u8 assoc_num = ctx->sa.assoc_num; struct mlx5e_macsec_rx_sc *rx_sc; sci_t sci = ctx_rx_sa->sc->sci; struct mlx5e_macsec_sa *rx_sa; struct mlx5e_macsec *macsec; struct list_head *list; int err = 0; mutex_lock(&priv->macsec->lock); macsec = priv->macsec; macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx); if (!macsec_device) { netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n"); err = -EINVAL; goto out; } list = &macsec_device->macsec_rx_sc_list_head; rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, sci); if (!rx_sc) { netdev_err(ctx->netdev, "MACsec offload rx_sc sci %lld doesn't exist\n", ctx->sa.rx_sa->sc->sci); err = -EINVAL; goto out; } rx_sa = rx_sc->rx_sa[assoc_num]; if (!rx_sa) { netdev_err(ctx->netdev, "MACsec offload rx_sc sci %lld rx_sa %d doesn't exist\n", sci, assoc_num); err = -EINVAL; goto out; } if (ctx->sa.update_pn) { netdev_err(ctx->netdev, "MACsec offload update RX sa %d PN isn't supported\n", assoc_num); err = -EINVAL; goto out; } err = macsec_rx_sa_active_update(ctx, rx_sa, ctx_rx_sa->active, &rx_sc->sc_xarray_element->fs_id); out: mutex_unlock(&macsec->lock); return err; } static int mlx5e_macsec_del_rxsa(struct macsec_context *ctx) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); struct mlx5e_macsec_device *macsec_device; sci_t sci = ctx->sa.rx_sa->sc->sci; struct mlx5e_macsec_rx_sc *rx_sc; u8 assoc_num = ctx->sa.assoc_num; struct mlx5e_macsec_sa *rx_sa; struct mlx5e_macsec *macsec; struct list_head *list; int err = 0; mutex_lock(&priv->macsec->lock); macsec = priv->macsec; macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx); if (!macsec_device) { netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n"); err = -EINVAL; goto out; } list = &macsec_device->macsec_rx_sc_list_head; rx_sc = mlx5e_macsec_get_rx_sc_from_sc_list(list, sci); if (!rx_sc) { netdev_err(ctx->netdev, "MACsec offload rx_sc sci %lld doesn't exist\n", ctx->sa.rx_sa->sc->sci); err = -EINVAL; goto out; } rx_sa = rx_sc->rx_sa[assoc_num]; if (!rx_sa) { netdev_err(ctx->netdev, "MACsec offload rx_sc sci %lld rx_sa %d doesn't exist\n", sci, assoc_num); err = -EINVAL; goto out; } if (rx_sa->active) mlx5e_macsec_cleanup_sa(macsec, rx_sa, false, ctx->secy->netdev, rx_sc->sc_xarray_element->fs_id); mlx5_destroy_encryption_key(macsec->mdev, rx_sa->enc_key_id); kfree(rx_sa); rx_sc->rx_sa[assoc_num] = NULL; out: mutex_unlock(&macsec->lock); return err; } static int mlx5e_macsec_add_secy(struct macsec_context *ctx) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); const struct net_device *dev = ctx->secy->netdev; const struct net_device *netdev = ctx->netdev; struct mlx5e_macsec_device *macsec_device; struct mlx5e_macsec *macsec; int err = 0; if (!mlx5e_macsec_secy_features_validate(ctx)) return -EINVAL; mutex_lock(&priv->macsec->lock); macsec = priv->macsec; if (mlx5e_macsec_get_macsec_device_context(macsec, ctx)) { netdev_err(netdev, "MACsec offload: MACsec net_device already exist\n"); goto out; } if (macsec->num_of_devices >= MLX5_MACSEC_NUM_OF_SUPPORTED_INTERFACES) { netdev_err(netdev, "Currently, only %d MACsec offload devices can be set\n", MLX5_MACSEC_NUM_OF_SUPPORTED_INTERFACES); err = -EBUSY; goto out; } macsec_device = kzalloc(sizeof(*macsec_device), GFP_KERNEL); if (!macsec_device) { err = -ENOMEM; goto out; } macsec_device->dev_addr = kmemdup(dev->dev_addr, dev->addr_len, GFP_KERNEL); if (!macsec_device->dev_addr) { kfree(macsec_device); err = -ENOMEM; goto out; } macsec_device->netdev = dev; INIT_LIST_HEAD_RCU(&macsec_device->macsec_rx_sc_list_head); list_add_rcu(&macsec_device->macsec_device_list_element, &macsec->macsec_device_list_head); ++macsec->num_of_devices; out: mutex_unlock(&macsec->lock); return err; } static int macsec_upd_secy_hw_address(struct macsec_context *ctx, struct mlx5e_macsec_device *macsec_device) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); const struct net_device *dev = ctx->secy->netdev; struct mlx5e_macsec *macsec = priv->macsec; struct mlx5e_macsec_rx_sc *rx_sc, *tmp; struct mlx5e_macsec_sa *rx_sa; struct list_head *list; int i, err = 0; list = &macsec_device->macsec_rx_sc_list_head; list_for_each_entry_safe(rx_sc, tmp, list, rx_sc_list_element) { for (i = 0; i < MACSEC_NUM_AN; ++i) { rx_sa = rx_sc->rx_sa[i]; if (!rx_sa || !rx_sa->macsec_rule) continue; mlx5e_macsec_cleanup_sa_fs(macsec, rx_sa, false, ctx->secy->netdev, rx_sc->sc_xarray_element->fs_id); } } list_for_each_entry_safe(rx_sc, tmp, list, rx_sc_list_element) { for (i = 0; i < MACSEC_NUM_AN; ++i) { rx_sa = rx_sc->rx_sa[i]; if (!rx_sa) continue; if (rx_sa->active) { err = mlx5e_macsec_init_sa_fs(ctx, rx_sa, true, false, &rx_sc->sc_xarray_element->fs_id); if (err) goto out; } } } memcpy(macsec_device->dev_addr, dev->dev_addr, dev->addr_len); out: return err; } /* this function is called from 2 macsec ops functions: * macsec_set_mac_address – MAC address was changed, therefore we need to destroy * and create new Tx contexts(macsec object + steering). * macsec_changelink – in this case the tx SC or SecY may be changed, therefore need to * destroy Tx and Rx contexts(macsec object + steering) */ static int mlx5e_macsec_upd_secy(struct macsec_context *ctx) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); const struct macsec_tx_sc *tx_sc = &ctx->secy->tx_sc; const struct net_device *dev = ctx->secy->netdev; struct mlx5e_macsec_device *macsec_device; struct mlx5e_macsec_sa *tx_sa; struct mlx5e_macsec *macsec; int i, err = 0; if (!mlx5e_macsec_secy_features_validate(ctx)) return -EINVAL; mutex_lock(&priv->macsec->lock); macsec = priv->macsec; macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx); if (!macsec_device) { netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n"); err = -EINVAL; goto out; } /* if the dev_addr hasn't change, it mean the callback is from macsec_changelink */ if (!memcmp(macsec_device->dev_addr, dev->dev_addr, dev->addr_len)) { err = macsec_upd_secy_hw_address(ctx, macsec_device); if (err) goto out; } for (i = 0; i < MACSEC_NUM_AN; ++i) { tx_sa = macsec_device->tx_sa[i]; if (!tx_sa) continue; mlx5e_macsec_cleanup_sa_fs(macsec, tx_sa, true, ctx->secy->netdev, 0); } for (i = 0; i < MACSEC_NUM_AN; ++i) { tx_sa = macsec_device->tx_sa[i]; if (!tx_sa) continue; if (tx_sa->assoc_num == tx_sc->encoding_sa && tx_sa->active) { err = mlx5e_macsec_init_sa_fs(ctx, tx_sa, tx_sc->encrypt, true, NULL); if (err) goto out; } } out: mutex_unlock(&macsec->lock); return err; } static int mlx5e_macsec_del_secy(struct macsec_context *ctx) { struct mlx5e_priv *priv = macsec_netdev_priv(ctx->netdev); struct mlx5e_macsec_device *macsec_device; struct mlx5e_macsec_rx_sc *rx_sc, *tmp; struct mlx5e_macsec_sa *tx_sa; struct mlx5e_macsec *macsec; struct list_head *list; int err = 0; int i; mutex_lock(&priv->macsec->lock); macsec = priv->macsec; macsec_device = mlx5e_macsec_get_macsec_device_context(macsec, ctx); if (!macsec_device) { netdev_err(ctx->netdev, "MACsec offload: Failed to find device context\n"); err = -EINVAL; goto out; } for (i = 0; i < MACSEC_NUM_AN; ++i) { tx_sa = macsec_device->tx_sa[i]; if (!tx_sa) continue; mlx5e_macsec_cleanup_sa(macsec, tx_sa, true, ctx->secy->netdev, 0); mlx5_destroy_encryption_key(macsec->mdev, tx_sa->enc_key_id); kfree(tx_sa); macsec_device->tx_sa[i] = NULL; } list = &macsec_device->macsec_rx_sc_list_head; list_for_each_entry_safe(rx_sc, tmp, list, rx_sc_list_element) macsec_del_rxsc_ctx(macsec, rx_sc, ctx->secy->netdev); kfree(macsec_device->dev_addr); macsec_device->dev_addr = NULL; list_del_rcu(&macsec_device->macsec_device_list_element); --macsec->num_of_devices; kfree(macsec_device); out: mutex_unlock(&macsec->lock); return err; } static void macsec_build_accel_attrs(struct mlx5e_macsec_sa *sa, struct mlx5_macsec_obj_attrs *attrs) { attrs->epn_state.epn_msb = sa->epn_state.epn_msb; attrs->epn_state.overlap = sa->epn_state.overlap; } static void macsec_aso_build_wqe_ctrl_seg(struct mlx5e_macsec_aso *macsec_aso, struct mlx5_wqe_aso_ctrl_seg *aso_ctrl, struct mlx5_aso_ctrl_param *param) { struct mlx5e_macsec_umr *umr = macsec_aso->umr; memset(aso_ctrl, 0, sizeof(*aso_ctrl)); aso_ctrl->va_l = cpu_to_be32(umr->dma_addr | ASO_CTRL_READ_EN); aso_ctrl->va_h = cpu_to_be32((u64)umr->dma_addr >> 32); aso_ctrl->l_key = cpu_to_be32(umr->mkey); if (!param) return; aso_ctrl->data_mask_mode = param->data_mask_mode << 6; aso_ctrl->condition_1_0_operand = param->condition_1_operand | param->condition_0_operand << 4; aso_ctrl->condition_1_0_offset = param->condition_1_offset | param->condition_0_offset << 4; aso_ctrl->data_offset_condition_operand = param->data_offset | param->condition_operand << 6; aso_ctrl->condition_0_data = cpu_to_be32(param->condition_0_data); aso_ctrl->condition_0_mask = cpu_to_be32(param->condition_0_mask); aso_ctrl->condition_1_data = cpu_to_be32(param->condition_1_data); aso_ctrl->condition_1_mask = cpu_to_be32(param->condition_1_mask); aso_ctrl->bitwise_data = cpu_to_be64(param->bitwise_data); aso_ctrl->data_mask = cpu_to_be64(param->data_mask); } static int mlx5e_macsec_modify_obj(struct mlx5_core_dev *mdev, struct mlx5_macsec_obj_attrs *attrs, u32 macsec_id) { u32 in[MLX5_ST_SZ_DW(modify_macsec_obj_in)] = {}; u32 out[MLX5_ST_SZ_DW(query_macsec_obj_out)]; u64 modify_field_select = 0; void *obj; int err; /* General object fields set */ MLX5_SET(general_obj_in_cmd_hdr, in, opcode, MLX5_CMD_OP_QUERY_GENERAL_OBJECT); MLX5_SET(general_obj_in_cmd_hdr, in, obj_type, MLX5_GENERAL_OBJECT_TYPES_MACSEC); MLX5_SET(general_obj_in_cmd_hdr, in, obj_id, macsec_id); err = mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out)); if (err) { mlx5_core_err(mdev, "Query MACsec object failed (Object id %d), err = %d\n", macsec_id, err); return err; } obj = MLX5_ADDR_OF(query_macsec_obj_out, out, macsec_object); modify_field_select = MLX5_GET64(macsec_offload_obj, obj, modify_field_select); /* EPN */ if (!(modify_field_select & MLX5_MODIFY_MACSEC_BITMASK_EPN_OVERLAP) || !(modify_field_select & MLX5_MODIFY_MACSEC_BITMASK_EPN_MSB)) { mlx5_core_dbg(mdev, "MACsec object field is not modifiable (Object id %d)\n", macsec_id); return -EOPNOTSUPP; } obj = MLX5_ADDR_OF(modify_macsec_obj_in, in, macsec_object); MLX5_SET64(macsec_offload_obj, obj, modify_field_select, MLX5_MODIFY_MACSEC_BITMASK_EPN_OVERLAP | MLX5_MODIFY_MACSEC_BITMASK_EPN_MSB); MLX5_SET(macsec_offload_obj, obj, epn_msb, attrs->epn_state.epn_msb); MLX5_SET(macsec_offload_obj, obj, epn_overlap, attrs->epn_state.overlap); /* General object fields set */ MLX5_SET(general_obj_in_cmd_hdr, in, opcode, MLX5_CMD_OP_MODIFY_GENERAL_OBJECT); return mlx5_cmd_exec(mdev, in, sizeof(in), out, sizeof(out)); } static void macsec_aso_build_ctrl(struct mlx5e_macsec_aso *aso, struct mlx5_wqe_aso_ctrl_seg *aso_ctrl, struct mlx5e_macsec_aso_in *in) { struct mlx5_aso_ctrl_param param = {}; param.data_mask_mode = MLX5_ASO_DATA_MASK_MODE_BITWISE_64BIT; param.condition_0_operand = MLX5_ASO_ALWAYS_TRUE; param.condition_1_operand = MLX5_ASO_ALWAYS_TRUE; if (in->mode == MLX5_MACSEC_EPN) { param.data_offset = MLX5_MACSEC_ASO_REMOVE_FLOW_PKT_CNT_OFFSET; param.bitwise_data = BIT_ULL(54); param.data_mask = param.bitwise_data; } macsec_aso_build_wqe_ctrl_seg(aso, aso_ctrl, ¶m); } static int macsec_aso_set_arm_event(struct mlx5_core_dev *mdev, struct mlx5e_macsec *macsec, struct mlx5e_macsec_aso_in *in) { struct mlx5e_macsec_aso *aso; struct mlx5_aso_wqe *aso_wqe; struct mlx5_aso *maso; int err; aso = &macsec->aso; maso = aso->maso; mutex_lock(&aso->aso_lock); aso_wqe = mlx5_aso_get_wqe(maso); mlx5_aso_build_wqe(maso, MLX5_MACSEC_ASO_DS_CNT, aso_wqe, in->obj_id, MLX5_ACCESS_ASO_OPC_MOD_MACSEC); macsec_aso_build_ctrl(aso, &aso_wqe->aso_ctrl, in); mlx5_aso_post_wqe(maso, false, &aso_wqe->ctrl); err = mlx5_aso_poll_cq(maso, false); mutex_unlock(&aso->aso_lock); return err; } static int macsec_aso_query(struct mlx5_core_dev *mdev, struct mlx5e_macsec *macsec, struct mlx5e_macsec_aso_in *in, struct mlx5e_macsec_aso_out *out) { struct mlx5e_macsec_aso *aso; struct mlx5_aso_wqe *aso_wqe; struct mlx5_aso *maso; unsigned long expires; int err; aso = &macsec->aso; maso = aso->maso; mutex_lock(&aso->aso_lock); aso_wqe = mlx5_aso_get_wqe(maso); mlx5_aso_build_wqe(maso, MLX5_MACSEC_ASO_DS_CNT, aso_wqe, in->obj_id, MLX5_ACCESS_ASO_OPC_MOD_MACSEC); macsec_aso_build_wqe_ctrl_seg(aso, &aso_wqe->aso_ctrl, NULL); mlx5_aso_post_wqe(maso, false, &aso_wqe->ctrl); expires = jiffies + msecs_to_jiffies(10); do { err = mlx5_aso_poll_cq(maso, false); if (err) usleep_range(2, 10); } while (err && time_is_after_jiffies(expires)); if (err) goto err_out; if (MLX5_GET(macsec_aso, aso->umr->ctx, epn_event_arm)) out->event_arm |= MLX5E_ASO_EPN_ARM; out->mode_param = MLX5_GET(macsec_aso, aso->umr->ctx, mode_parameter); err_out: mutex_unlock(&aso->aso_lock); return err; } static struct mlx5e_macsec_sa *get_macsec_tx_sa_from_obj_id(const struct mlx5e_macsec *macsec, const u32 obj_id) { const struct list_head *device_list; struct mlx5e_macsec_sa *macsec_sa; struct mlx5e_macsec_device *iter; int i; device_list = &macsec->macsec_device_list_head; list_for_each_entry(iter, device_list, macsec_device_list_element) { for (i = 0; i < MACSEC_NUM_AN; ++i) { macsec_sa = iter->tx_sa[i]; if (!macsec_sa || !macsec_sa->active) continue; if (macsec_sa->macsec_obj_id == obj_id) return macsec_sa; } } return NULL; } static struct mlx5e_macsec_sa *get_macsec_rx_sa_from_obj_id(const struct mlx5e_macsec *macsec, const u32 obj_id) { const struct list_head *device_list, *sc_list; struct mlx5e_macsec_rx_sc *mlx5e_rx_sc; struct mlx5e_macsec_sa *macsec_sa; struct mlx5e_macsec_device *iter; int i; device_list = &macsec->macsec_device_list_head; list_for_each_entry(iter, device_list, macsec_device_list_element) { sc_list = &iter->macsec_rx_sc_list_head; list_for_each_entry(mlx5e_rx_sc, sc_list, rx_sc_list_element) { for (i = 0; i < MACSEC_NUM_AN; ++i) { macsec_sa = mlx5e_rx_sc->rx_sa[i]; if (!macsec_sa || !macsec_sa->active) continue; if (macsec_sa->macsec_obj_id == obj_id) return macsec_sa; } } } return NULL; } static void macsec_epn_update(struct mlx5e_macsec *macsec, struct mlx5_core_dev *mdev, struct mlx5e_macsec_sa *sa, u32 obj_id, u32 mode_param) { struct mlx5_macsec_obj_attrs attrs = {}; struct mlx5e_macsec_aso_in in = {}; /* When the bottom of the replay protection window (mode_param) crosses 2^31 (half sequence * number wraparound) hence mode_param > MLX5_MACSEC_EPN_SCOPE_MID the SW should update the * esn_overlap to OLD (1). * When the bottom of the replay protection window (mode_param) crosses 2^32 (full sequence * number wraparound) hence mode_param < MLX5_MACSEC_EPN_SCOPE_MID since it did a * wraparound, the SW should update the esn_overlap to NEW (0), and increment the esn_msb. */ if (mode_param < MLX5_MACSEC_EPN_SCOPE_MID) { sa->epn_state.epn_msb++; sa->epn_state.overlap = 0; } else { sa->epn_state.overlap = 1; } macsec_build_accel_attrs(sa, &attrs); mlx5e_macsec_modify_obj(mdev, &attrs, obj_id); /* Re-set EPN arm event */ in.obj_id = obj_id; in.mode = MLX5_MACSEC_EPN; macsec_aso_set_arm_event(mdev, macsec, &in); } static void macsec_async_event(struct work_struct *work) { struct mlx5e_macsec_async_work *async_work; struct mlx5e_macsec_aso_out out = {}; struct mlx5e_macsec_aso_in in = {}; struct mlx5e_macsec_sa *macsec_sa; struct mlx5e_macsec *macsec; struct mlx5_core_dev *mdev; u32 obj_id; async_work = container_of(work, struct mlx5e_macsec_async_work, work); macsec = async_work->macsec; mutex_lock(&macsec->lock); mdev = async_work->mdev; obj_id = async_work->obj_id; macsec_sa = get_macsec_tx_sa_from_obj_id(macsec, obj_id); if (!macsec_sa) { macsec_sa = get_macsec_rx_sa_from_obj_id(macsec, obj_id); if (!macsec_sa) { mlx5_core_dbg(mdev, "MACsec SA is not found (SA object id %d)\n", obj_id); goto out_async_work; } } /* Query MACsec ASO context */ in.obj_id = obj_id; macsec_aso_query(mdev, macsec, &in, &out); /* EPN case */ if (macsec_sa->epn_state.epn_enabled && !(out.event_arm & MLX5E_ASO_EPN_ARM)) macsec_epn_update(macsec, mdev, macsec_sa, obj_id, out.mode_param); out_async_work: kfree(async_work); mutex_unlock(&macsec->lock); } static int macsec_obj_change_event(struct notifier_block *nb, unsigned long event, void *data) { struct mlx5e_macsec *macsec = container_of(nb, struct mlx5e_macsec, nb); struct mlx5e_macsec_async_work *async_work; struct mlx5_eqe_obj_change *obj_change; struct mlx5_eqe *eqe = data; u16 obj_type; u32 obj_id; if (event != MLX5_EVENT_TYPE_OBJECT_CHANGE) return NOTIFY_DONE; obj_change = &eqe->data.obj_change; obj_type = be16_to_cpu(obj_change->obj_type); obj_id = be32_to_cpu(obj_change->obj_id); if (obj_type != MLX5_GENERAL_OBJECT_TYPES_MACSEC) return NOTIFY_DONE; async_work = kzalloc(sizeof(*async_work), GFP_ATOMIC); if (!async_work) return NOTIFY_DONE; async_work->macsec = macsec; async_work->mdev = macsec->mdev; async_work->obj_id = obj_id; INIT_WORK(&async_work->work, macsec_async_event); WARN_ON(!queue_work(macsec->wq, &async_work->work)); return NOTIFY_OK; } static int mlx5e_macsec_aso_init(struct mlx5e_macsec_aso *aso, struct mlx5_core_dev *mdev) { struct mlx5_aso *maso; int err; err = mlx5_core_alloc_pd(mdev, &aso->pdn); if (err) { mlx5_core_err(mdev, "MACsec offload: Failed to alloc pd for MACsec ASO, err=%d\n", err); return err; } maso = mlx5_aso_create(mdev, aso->pdn); if (IS_ERR(maso)) { err = PTR_ERR(maso); goto err_aso; } err = mlx5e_macsec_aso_reg_mr(mdev, aso); if (err) goto err_aso_reg; mutex_init(&aso->aso_lock); aso->maso = maso; return 0; err_aso_reg: mlx5_aso_destroy(maso); err_aso: mlx5_core_dealloc_pd(mdev, aso->pdn); return err; } static void mlx5e_macsec_aso_cleanup(struct mlx5e_macsec_aso *aso, struct mlx5_core_dev *mdev) { if (!aso) return; mlx5e_macsec_aso_dereg_mr(mdev, aso); mlx5_aso_destroy(aso->maso); mlx5_core_dealloc_pd(mdev, aso->pdn); } static const struct macsec_ops macsec_offload_ops = { .mdo_add_txsa = mlx5e_macsec_add_txsa, .mdo_upd_txsa = mlx5e_macsec_upd_txsa, .mdo_del_txsa = mlx5e_macsec_del_txsa, .mdo_add_rxsc = mlx5e_macsec_add_rxsc, .mdo_upd_rxsc = mlx5e_macsec_upd_rxsc, .mdo_del_rxsc = mlx5e_macsec_del_rxsc, .mdo_add_rxsa = mlx5e_macsec_add_rxsa, .mdo_upd_rxsa = mlx5e_macsec_upd_rxsa, .mdo_del_rxsa = mlx5e_macsec_del_rxsa, .mdo_add_secy = mlx5e_macsec_add_secy, .mdo_upd_secy = mlx5e_macsec_upd_secy, .mdo_del_secy = mlx5e_macsec_del_secy, .rx_uses_md_dst = true, }; bool mlx5e_macsec_handle_tx_skb(struct mlx5e_macsec *macsec, struct sk_buff *skb) { struct metadata_dst *md_dst = skb_metadata_dst(skb); u32 fs_id; fs_id = mlx5_macsec_fs_get_fs_id_from_hashtable(macsec->mdev->macsec_fs, &md_dst->u.macsec_info.sci); if (!fs_id) goto err_out; return true; err_out: dev_kfree_skb_any(skb); return false; } void mlx5e_macsec_tx_build_eseg(struct mlx5e_macsec *macsec, struct sk_buff *skb, struct mlx5_wqe_eth_seg *eseg) { struct metadata_dst *md_dst = skb_metadata_dst(skb); u32 fs_id; fs_id = mlx5_macsec_fs_get_fs_id_from_hashtable(macsec->mdev->macsec_fs, &md_dst->u.macsec_info.sci); if (!fs_id) return; eseg->flow_table_metadata = cpu_to_be32(MLX5_ETH_WQE_FT_META_MACSEC | fs_id << 2); } void mlx5e_macsec_offload_handle_rx_skb(struct net_device *netdev, struct sk_buff *skb, struct mlx5_cqe64 *cqe) { struct mlx5e_macsec_rx_sc_xarray_element *sc_xarray_element; u32 macsec_meta_data = be32_to_cpu(cqe->ft_metadata); struct mlx5e_priv *priv = macsec_netdev_priv(netdev); struct mlx5e_macsec_rx_sc *rx_sc; struct mlx5e_macsec *macsec; u32 fs_id; macsec = priv->macsec; if (!macsec) return; fs_id = MLX5_MACSEC_RX_METADAT_HANDLE(macsec_meta_data); rcu_read_lock(); sc_xarray_element = xa_load(&macsec->sc_xarray, fs_id); rx_sc = sc_xarray_element->rx_sc; if (rx_sc) { dst_hold(&rx_sc->md_dst->dst); skb_dst_set(skb, &rx_sc->md_dst->dst); } rcu_read_unlock(); } void mlx5e_macsec_build_netdev(struct mlx5e_priv *priv) { struct net_device *netdev = priv->netdev; if (!mlx5e_is_macsec_device(priv->mdev)) return; /* Enable MACsec */ mlx5_core_dbg(priv->mdev, "mlx5e: MACsec acceleration enabled\n"); netdev->macsec_ops = &macsec_offload_ops; netdev->features |= NETIF_F_HW_MACSEC; netif_keep_dst(netdev); } int mlx5e_macsec_init(struct mlx5e_priv *priv) { struct mlx5_core_dev *mdev = priv->mdev; struct mlx5e_macsec *macsec = NULL; struct mlx5_macsec_fs *macsec_fs; int err; if (!mlx5e_is_macsec_device(priv->mdev)) { mlx5_core_dbg(mdev, "Not a MACsec offload device\n"); return 0; } macsec = kzalloc(sizeof(*macsec), GFP_KERNEL); if (!macsec) return -ENOMEM; INIT_LIST_HEAD(&macsec->macsec_device_list_head); mutex_init(&macsec->lock); err = mlx5e_macsec_aso_init(&macsec->aso, priv->mdev); if (err) { mlx5_core_err(mdev, "MACsec offload: Failed to init aso, err=%d\n", err); goto err_aso; } macsec->wq = alloc_ordered_workqueue("mlx5e_macsec_%s", 0, priv->netdev->name); if (!macsec->wq) { err = -ENOMEM; goto err_wq; } xa_init_flags(&macsec->sc_xarray, XA_FLAGS_ALLOC1); priv->macsec = macsec; macsec->mdev = mdev; macsec_fs = mlx5_macsec_fs_init(mdev); if (!macsec_fs) { err = -ENOMEM; goto err_out; } mdev->macsec_fs = macsec_fs; macsec->nb.notifier_call = macsec_obj_change_event; mlx5_notifier_register(mdev, &macsec->nb); mlx5_core_dbg(mdev, "MACsec attached to netdevice\n"); return 0; err_out: destroy_workqueue(macsec->wq); err_wq: mlx5e_macsec_aso_cleanup(&macsec->aso, priv->mdev); err_aso: kfree(macsec); priv->macsec = NULL; return err; } void mlx5e_macsec_cleanup(struct mlx5e_priv *priv) { struct mlx5e_macsec *macsec = priv->macsec; struct mlx5_core_dev *mdev = priv->mdev; if (!macsec) return; mlx5_notifier_unregister(mdev, &macsec->nb); mlx5_macsec_fs_cleanup(mdev->macsec_fs); destroy_workqueue(macsec->wq); mlx5e_macsec_aso_cleanup(&macsec->aso, mdev); mutex_destroy(&macsec->lock); kfree(macsec); }
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