nimble/controller: Add Channel Sounding setup phase #1765
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mkasenberg
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sjanc
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May 8, 2024
nimble/controller/src/ble_ll_cs.c
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| cssm = connsm->cssm; | ||
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| /* Check if a disabled role is used in CS configs */ | ||
| for (int i = 0; i < ARRAY_SIZE(cssm->config); i++) { |
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nitpick: we typically declare variable at top of the function, also could be unsigned to avoid signed-unsigned comparison
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| /* Check if a disabled role is used in CS configs */ | ||
| for (int i = 0; i < ARRAY_SIZE(cssm->config); i++) { | ||
| struct ble_ll_cs_config *conf = &cssm->config[i]; |
nimble/controller/src/ble_ll_cs.c
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| } | ||
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| cssm->roles_enabled = cmd->role_enable; | ||
| cssm->cs_sync_antenna_selection = cmd->cs_sync_antenna_selection; |
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not sure if we are very consistent with this but maybe sm could be modified only after all validation is done? ie to avoid modifying it and stil returning error status
| int | ||
| ble_ll_cs_rx_fae_req(struct ble_ll_conn_sm *connsm, uint8_t *rspbuf) | ||
| { | ||
| memcpy(rspbuf, connsm->cssm->local_fae_table, 72); |
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this is quite a lot, is it guaranteed that there is enough linear space in underlying mbuf?
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Good point, there wasn't ;)
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| if (!rc) { | ||
| swap_buf(out_data, ecb.cipher_text, BLE_ENC_BLOCK_SIZE); | ||
| rc = 0; |
nimble/controller/src/ble_ll_cs.c
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| { | ||
| uint8_t config_id = connsm->cssm->config_req_id; | ||
| uint8_t action = connsm->cssm->config_req_action; | ||
| const struct ble_ll_cs_config *conf = &connsm->cssm->config[config_id]; |
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is config_id already validated here?
| return BLE_ERR_UNK_CONN_ID; | ||
| } | ||
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| conf = &connsm->cssm->config[cmd->config_id]; |
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config_id should be validated before being used for indexing
A dedicated CS DRBG is used to coordinate the randomization of several transaction types during a CS procedure.
The BT specification provides sample data that can be used to test the correctness of a CS DRBG implementation.
ble_cs.c contains initial implementation that caused warnings when running command: newt test @apache-mynewt-nimble/nimble
Latest drafts of Atlanta spec contains Optional_TX_SNR_Capability field as a CS capability. Companion signal parameter was removed.
Initialize the CS state machine with the connection state machine.
Add lengths and opcodes of Channel Sounding LL CTRL PDUs.
Implement the LE CS Read Local Supported Capabilities command. Enable basic CS capabilities in local controller.
Implements: - LE CS Read Remote Supported Capabilities command, - LE CS Write Cached Remote Supported Capabilities command.
The HCI_LE_CS_Set_Default_Settings command is used by a Host to set default CS settings in the local Controller for the connection.
Implements: - LE CS Read Remote FAE Table command - LE CS Write Cached Remote FAE Table command
Implements: - LE CS Create Config command - LE CS Remove Config command
Implements LE CS Security Enable command.
sjanc
approved these changes
May 24, 2024
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