Fan Zhang | f539578 | 2020-04-29 14:00:03 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2020 Cisco and/or its affiliates. |
| 3 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | * you may not use this file except in compliance with the License. |
| 5 | * You may obtain a copy of the License at: |
| 6 | * |
| 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | * |
| 9 | * Unless required by applicable law or agreed to in writing, software |
| 10 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | * See the License for the specific language governing permissions and |
| 13 | * limitations under the License. |
| 14 | */ |
| 15 | |
| 16 | #include <stdbool.h> |
| 17 | #include <vlib/vlib.h> |
| 18 | #include <vnet/crypto/crypto.h> |
| 19 | |
| 20 | typedef enum |
| 21 | { |
| 22 | #define _(sym,str) VNET_CRYPTO_ASYNC_ERROR_##sym, |
| 23 | foreach_crypto_op_status |
| 24 | #undef _ |
| 25 | VNET_CRYPTO_ASYNC_N_ERROR, |
| 26 | } vnet_crypto_async_error_t; |
| 27 | |
| 28 | static char *vnet_crypto_async_error_strings[] = { |
| 29 | #define _(sym,string) string, |
| 30 | foreach_crypto_op_status |
| 31 | #undef _ |
| 32 | }; |
| 33 | |
| 34 | #define foreach_crypto_dispatch_next \ |
| 35 | _(ERR_DROP, "error-drop") |
| 36 | |
| 37 | typedef enum |
| 38 | { |
| 39 | #define _(n, s) CRYPTO_DISPATCH_NEXT_##n, |
| 40 | foreach_crypto_dispatch_next |
| 41 | #undef _ |
| 42 | CRYPTO_DISPATCH_N_NEXT, |
| 43 | } crypto_dispatch_next_t; |
| 44 | |
| 45 | typedef struct |
| 46 | { |
| 47 | vnet_crypto_op_status_t op_status; |
| 48 | vnet_crypto_async_op_id_t op; |
| 49 | } crypto_dispatch_trace_t; |
| 50 | |
| 51 | static u8 * |
| 52 | format_crypto_dispatch_trace (u8 * s, va_list * args) |
| 53 | { |
| 54 | CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); |
| 55 | CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); |
| 56 | crypto_dispatch_trace_t *t = va_arg (*args, crypto_dispatch_trace_t *); |
| 57 | |
| 58 | s = format (s, "%U: %U", format_vnet_crypto_async_op, t->op, |
| 59 | format_vnet_crypto_op_status, t->op_status); |
| 60 | return s; |
| 61 | } |
| 62 | |
| 63 | static void |
| 64 | vnet_crypto_async_add_trace (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 65 | vlib_buffer_t * b, |
| 66 | vnet_crypto_async_op_id_t op_id, |
| 67 | vnet_crypto_op_status_t status) |
| 68 | { |
| 69 | crypto_dispatch_trace_t *tr = vlib_add_trace (vm, node, b, sizeof (*tr)); |
| 70 | tr->op_status = status; |
| 71 | tr->op = op_id; |
| 72 | } |
| 73 | |
| 74 | static_always_inline u32 |
| 75 | crypto_dequeue_frame (vlib_main_t * vm, vlib_node_runtime_t * node, |
| 76 | vnet_crypto_thread_t * ct, |
| 77 | vnet_crypto_frame_dequeue_t * hdl, |
| 78 | u32 n_cache, u32 * n_total) |
| 79 | { |
| 80 | vnet_crypto_async_frame_t *cf = (hdl) (vm); |
| 81 | |
| 82 | while (cf) |
| 83 | { |
| 84 | vec_validate (ct->buffer_indice, n_cache + cf->n_elts); |
| 85 | vec_validate (ct->nexts, n_cache + cf->n_elts); |
| 86 | clib_memcpy_fast (ct->buffer_indice + n_cache, cf->buffer_indices, |
| 87 | sizeof (u32) * cf->n_elts); |
| 88 | if (cf->state == VNET_CRYPTO_FRAME_STATE_SUCCESS) |
| 89 | { |
| 90 | clib_memcpy_fast (ct->nexts + n_cache, cf->next_node_index, |
| 91 | sizeof (u16) * cf->n_elts); |
| 92 | } |
| 93 | else |
| 94 | { |
| 95 | u32 i; |
| 96 | for (i = 0; i < cf->n_elts; i++) |
| 97 | { |
| 98 | if (cf->elts[i].status != VNET_CRYPTO_OP_STATUS_COMPLETED) |
| 99 | { |
| 100 | ct->nexts[i + n_cache] = CRYPTO_DISPATCH_NEXT_ERR_DROP; |
| 101 | vlib_node_increment_counter (vm, node->node_index, |
| 102 | cf->elts[i].status, 1); |
| 103 | } |
| 104 | else |
| 105 | ct->nexts[i + n_cache] = cf->next_node_index[i]; |
| 106 | } |
| 107 | } |
| 108 | n_cache += cf->n_elts; |
| 109 | *n_total += cf->n_elts; |
| 110 | if (n_cache >= VLIB_FRAME_SIZE) |
| 111 | { |
| 112 | vlib_buffer_enqueue_to_next (vm, node, ct->buffer_indice, ct->nexts, |
| 113 | n_cache); |
| 114 | n_cache = 0; |
| 115 | } |
| 116 | |
| 117 | if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE)) |
| 118 | { |
| 119 | u32 i; |
| 120 | |
| 121 | for (i = 0; i < cf->n_elts; i++) |
| 122 | { |
| 123 | vlib_buffer_t *b = vlib_get_buffer (vm, cf->buffer_indices[i]); |
| 124 | if (b->flags & VLIB_BUFFER_IS_TRACED) |
| 125 | vnet_crypto_async_add_trace (vm, node, b, cf->op, |
| 126 | cf->elts[i].status); |
| 127 | } |
| 128 | } |
| 129 | vnet_crypto_async_free_frame (vm, cf); |
| 130 | cf = (hdl) (vm); |
| 131 | } |
| 132 | |
| 133 | return n_cache; |
| 134 | } |
| 135 | |
| 136 | VLIB_NODE_FN (crypto_dispatch_node) (vlib_main_t * vm, |
| 137 | vlib_node_runtime_t * node, |
| 138 | vlib_frame_t * frame) |
| 139 | { |
| 140 | vnet_crypto_main_t *cm = &crypto_main; |
| 141 | vnet_crypto_thread_t *ct = cm->threads + vm->thread_index; |
| 142 | u32 n_dispatched = 0, n_cache = 0; |
| 143 | u32 index; |
| 144 | |
| 145 | /* *INDENT-OFF* */ |
| 146 | clib_bitmap_foreach (index, cm->async_active_ids, ({ |
| 147 | n_cache = crypto_dequeue_frame (vm, node, ct, cm->dequeue_handlers[index], |
| 148 | n_cache, &n_dispatched); |
| 149 | })); |
| 150 | /* *INDENT-ON* */ |
| 151 | if (n_cache) |
| 152 | vlib_buffer_enqueue_to_next (vm, node, ct->buffer_indice, ct->nexts, |
| 153 | n_cache); |
| 154 | |
| 155 | return n_dispatched; |
| 156 | } |
| 157 | |
| 158 | /* *INDENT-OFF* */ |
| 159 | VLIB_REGISTER_NODE (crypto_dispatch_node) = { |
| 160 | .name = "crypto-dispatch", |
| 161 | .type = VLIB_NODE_TYPE_INPUT, |
| 162 | .state = VLIB_NODE_STATE_DISABLED, |
| 163 | .format_trace = format_crypto_dispatch_trace, |
| 164 | |
| 165 | .n_errors = ARRAY_LEN(vnet_crypto_async_error_strings), |
| 166 | .error_strings = vnet_crypto_async_error_strings, |
| 167 | |
| 168 | .n_next_nodes = CRYPTO_DISPATCH_N_NEXT, |
| 169 | .next_nodes = { |
| 170 | #define _(n, s) \ |
| 171 | [CRYPTO_DISPATCH_NEXT_##n] = s, |
| 172 | foreach_crypto_dispatch_next |
| 173 | #undef _ |
| 174 | }, |
| 175 | }; |
| 176 | /* *INDENT-ON* */ |
| 177 | |
| 178 | /* |
| 179 | * fd.io coding-style-patch-verification: ON |
| 180 | * |
| 181 | * Local Variables: |
| 182 | * eval: (c-set-style "gnu") |
| 183 | * End: |
| 184 | */ |