William A. Kennington III | 7d6fa42 | 2021-02-08 17:04:02 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Library of NC-SI commands compliant with version 1.0.0. |
| 3 | * |
| 4 | * This implements a subset of the commands provided in the specification. |
| 5 | * |
| 6 | * Checksums are optional and not implemented here. All NC-SI checksums are set |
| 7 | * to 0 to indicate that per 8.2.2.3. |
| 8 | */ |
| 9 | |
| 10 | #include <stdint.h> |
| 11 | #include <string.h> |
| 12 | |
| 13 | #include <netinet/in.h> |
| 14 | |
| 15 | #include "platforms/nemora/portable/ncsi.h" |
| 16 | #include "platforms/nemora/portable/ncsi_server.h" |
| 17 | |
| 18 | |
| 19 | void ncsi_build_response_header(const uint8_t* request_buf, |
| 20 | uint8_t* response_buf, uint16_t response_code, |
| 21 | uint16_t reason_code, uint16_t payload_length) { |
| 22 | /* Copy the header from the command */ |
| 23 | memcpy(response_buf, request_buf, sizeof(ncsi_header_t)); |
| 24 | ncsi_simple_response_t* response = (ncsi_simple_response_t*)response_buf; |
| 25 | response->response_code = response_code; |
| 26 | response->reason_code = reason_code; |
| 27 | |
| 28 | const ncsi_header_t* request_header = (const ncsi_header_t*)request_buf; |
| 29 | response->hdr.control_packet_type = |
| 30 | request_header->control_packet_type | NCSI_RESPONSE; |
| 31 | response->hdr.payload_length = htons(payload_length); |
| 32 | } |
| 33 | |
| 34 | uint32_t ncsi_build_simple_ack(const uint8_t* request_buf, |
| 35 | uint8_t* response_buf) { |
| 36 | /* Copy the header from the command */ |
| 37 | ncsi_build_response_header( |
| 38 | request_buf, response_buf, 0, 0, |
| 39 | sizeof(ncsi_simple_response_t) - sizeof(ncsi_header_t)); |
| 40 | |
| 41 | return sizeof(ncsi_simple_response_t); |
| 42 | } |
| 43 | |
| 44 | uint32_t ncsi_build_simple_nack(const uint8_t* request_buf, |
| 45 | uint8_t* response_buf, uint16_t response_code, |
| 46 | uint16_t reason_code) { |
| 47 | ncsi_build_response_header( |
| 48 | request_buf, response_buf, response_code, reason_code, |
| 49 | sizeof(ncsi_simple_response_t) - sizeof(ncsi_header_t)); |
| 50 | |
| 51 | return sizeof(ncsi_simple_response_t); |
| 52 | } |
| 53 | |
| 54 | static void ncsi_build_oem_ack(const uint8_t* request_buf, |
| 55 | uint8_t* response_buf, uint32_t response_size) { |
| 56 | ncsi_build_response_header( |
| 57 | request_buf, response_buf, 0, 0, |
| 58 | response_size - sizeof(ncsi_header_t)); |
| 59 | const ncsi_oem_simple_cmd_t* oem_command = |
| 60 | (const ncsi_oem_simple_cmd_t*)request_buf; |
| 61 | ncsi_oem_simple_response_t* oem_response = |
| 62 | (ncsi_oem_simple_response_t*)response_buf; |
| 63 | memmove(&oem_response->oem_header, &oem_command->oem_header, |
| 64 | sizeof(ncsi_oem_extension_header_t)); |
| 65 | oem_response->oem_header.manufacturer_id = htonl(NCSI_OEM_MANUFACTURER_ID); |
| 66 | } |
| 67 | |
| 68 | uint32_t ncsi_build_version_id_ack(const uint8_t* request_buf, |
| 69 | uint8_t* response_buf, |
| 70 | const ncsi_version_id_t* version_id) { |
| 71 | ncsi_build_response_header( |
| 72 | request_buf, response_buf, 0, 0, |
| 73 | sizeof(ncsi_version_id_response_t) - sizeof(ncsi_header_t)); |
| 74 | ncsi_version_id_response_t* version_id_response = |
| 75 | (ncsi_version_id_response_t*)response_buf; |
| 76 | memcpy(&version_id_response->version, version_id, sizeof(ncsi_version_id_t)); |
| 77 | return sizeof(ncsi_version_id_response_t); |
| 78 | } |
| 79 | |
| 80 | uint32_t ncsi_build_oem_get_mac_ack(const uint8_t* request_buf, |
| 81 | uint8_t* response_buf, |
| 82 | const mac_addr_t* mac) { |
| 83 | ncsi_build_oem_ack(request_buf, response_buf, |
| 84 | sizeof(ncsi_host_mac_response_t)); |
| 85 | ncsi_host_mac_response_t* response = (ncsi_host_mac_response_t*)response_buf; |
| 86 | memcpy(response->mac, mac->octet, MAC_ADDR_SIZE); |
| 87 | return sizeof(ncsi_host_mac_response_t); |
| 88 | } |
| 89 | |
| 90 | uint32_t ncsi_build_oem_simple_ack(const uint8_t* request_buf, |
| 91 | uint8_t* response_buf) { |
| 92 | ncsi_build_oem_ack(request_buf, response_buf, |
| 93 | sizeof(ncsi_oem_simple_response_t)); |
| 94 | return sizeof(ncsi_oem_simple_response_t); |
| 95 | } |
| 96 | |
| 97 | uint32_t ncsi_build_oem_echo_ack(const uint8_t* request_buf, |
| 98 | uint8_t* response_buf) { |
| 99 | ncsi_oem_echo_response_t* echo_response = |
| 100 | (ncsi_oem_echo_response_t*)response_buf; |
| 101 | const ncsi_oem_echo_cmd_t* echo_cmd = (const ncsi_oem_echo_cmd_t*)request_buf; |
| 102 | memmove(echo_response->pattern, echo_cmd->pattern, sizeof(echo_cmd->pattern)); |
| 103 | // Because we allow request and response to be the same buffer, it is |
| 104 | // important that pattern copy precedes the call to ncsi_build_oem_ack. |
| 105 | ncsi_build_oem_ack(request_buf, response_buf, |
| 106 | sizeof(ncsi_oem_echo_response_t)); |
| 107 | |
| 108 | return sizeof(ncsi_oem_echo_response_t); |
| 109 | } |
| 110 | |
| 111 | uint32_t ncsi_build_oem_get_filter_ack(const uint8_t* request_buf, |
| 112 | uint8_t* response_buf, |
| 113 | const ncsi_oem_filter_t* filter) { |
| 114 | ncsi_build_oem_ack(request_buf, response_buf, |
| 115 | sizeof(ncsi_oem_get_filter_response_t)); |
| 116 | ncsi_oem_get_filter_response_t* get_filter_response = |
| 117 | (ncsi_oem_get_filter_response_t*)response_buf; |
| 118 | memcpy(&get_filter_response->filter, filter, |
| 119 | sizeof(get_filter_response->filter)); |
| 120 | return sizeof(ncsi_oem_get_filter_response_t); |
| 121 | } |
| 122 | |
| 123 | uint32_t ncsi_build_pt_stats_ack(const uint8_t* request_buf, |
| 124 | uint8_t* response_buf, |
| 125 | const ncsi_passthrough_stats_t* stats) { |
| 126 | ncsi_build_response_header( |
| 127 | request_buf, response_buf, 0, 0, |
| 128 | sizeof(ncsi_passthrough_stats_response_t) - sizeof(ncsi_header_t)); |
| 129 | ncsi_passthrough_stats_response_t* pt_stats_response = |
| 130 | (ncsi_passthrough_stats_response_t*)response_buf; |
| 131 | /* TODO: endianness? */ |
| 132 | memcpy(&pt_stats_response->stats, stats, sizeof(pt_stats_response->stats)); |
| 133 | return sizeof(ncsi_passthrough_stats_response_t); |
| 134 | } |
| 135 | |
| 136 | uint32_t ncsi_build_pt_stats_legacy_ack( |
| 137 | const uint8_t* request_buf, uint8_t* response_buf, |
| 138 | const ncsi_passthrough_stats_legacy_t* stats) { |
| 139 | ncsi_build_response_header( |
| 140 | request_buf, response_buf, 0, 0, |
| 141 | sizeof(ncsi_passthrough_stats_legacy_response_t) - sizeof(ncsi_header_t)); |
| 142 | ncsi_passthrough_stats_legacy_response_t* pt_stats_response = |
| 143 | (ncsi_passthrough_stats_legacy_response_t*)response_buf; |
| 144 | /* TODO: endianness? */ |
| 145 | memcpy(&pt_stats_response->stats, stats, sizeof(pt_stats_response->stats)); |
| 146 | return sizeof(ncsi_passthrough_stats_legacy_response_t); |
| 147 | } |
| 148 | |
| 149 | uint32_t ncsi_build_link_status_ack(const uint8_t* request_buf, |
| 150 | uint8_t* response_buf, |
| 151 | const ncsi_link_status_t* link_status) { |
| 152 | ncsi_build_response_header( |
| 153 | request_buf, response_buf, 0, 0, |
| 154 | sizeof(ncsi_link_status_response_t) - sizeof(ncsi_header_t)); |
| 155 | ncsi_link_status_response_t* link_status_response = |
| 156 | (ncsi_link_status_response_t*)response_buf; |
| 157 | memcpy(&link_status_response->link_status, link_status, |
| 158 | sizeof(link_status_response->link_status)); |
| 159 | return sizeof(ncsi_link_status_response_t); |
| 160 | } |