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spdm-socket: add seperate send/recv functions

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This is to support uni-directional transports such as SPDM over Storage.
As specified by the DMTF DSP0286.

Also update spdm_socket_rsp() to use the new send()/receive() functions. For
the case of spdm_socket_receive(), this allows us to do error checking
in one place with the addition of spdm_socket_command_valid().

Signed-off-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
This commit is contained in:
Wilfred Mallawa
2025-10-30 07:07:14 +01:00
committed by Klaus Jensen
parent e090e0312d
commit 169e8d0c4b
2 changed files with 77 additions and 13 deletions
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include/system/spdm-socket.h
+32
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@@ -50,6 +50,35 @@ uint32_t spdm_socket_rsp(const int socket, uint32_t transport_type,
void *req, uint32_t req_len,
void *rsp, uint32_t rsp_len);
/**
* spdm_socket_rsp: Receive a message from an SPDM server
* @socket: socket returned from spdm_socket_connect()
* @transport_type: SPDM_SOCKET_TRANSPORT_TYPE_* macro
* @rsp: response buffer
* @rsp_len: response buffer length
*
* Receives a message from the SPDM server and returns the number of bytes
* received or 0 on failure. This can be used to receive a message from the SPDM
* server without sending anything first.
*/
uint32_t spdm_socket_receive(const int socket, uint32_t transport_type,
void *rsp, uint32_t rsp_len);
/**
* spdm_socket_rsp: Sends a message to an SPDM server
* @socket: socket returned from spdm_socket_connect()
* @socket_cmd: socket command type (normal/if_recv/if_send etc...)
* @transport_type: SPDM_SOCKET_TRANSPORT_TYPE_* macro
* @req: request buffer
* @req_len: request buffer length
*
* Sends platform data to a SPDM server on socket, returns true on success.
* The response from the server must then be fetched by using
* spdm_socket_receive().
*/
bool spdm_socket_send(const int socket, uint32_t socket_cmd,
uint32_t transport_type, void *req, uint32_t req_len);
/**
* spdm_socket_close: send a shutdown command to the server
* @socket: socket returned from spdm_socket_connect()
@@ -60,6 +89,9 @@ uint32_t spdm_socket_rsp(const int socket, uint32_t transport_type,
void spdm_socket_close(const int socket, uint32_t transport_type);
#define SPDM_SOCKET_COMMAND_NORMAL 0x0001
#define SPDM_SOCKET_STORAGE_CMD_IF_SEND 0x0002
#define SPDM_SOCKET_STORAGE_CMD_IF_RECV 0x0003
#define SOCKET_SPDM_STORAGE_ACK_STATUS 0x0004
#define SPDM_SOCKET_COMMAND_OOB_ENCAP_KEY_UPDATE 0x8001
#define SPDM_SOCKET_COMMAND_CONTINUE 0xFFFD
#define SPDM_SOCKET_COMMAND_SHUTDOWN 0xFFFE