Fix Req Payload Allocation for Transfer FW & Memdev Set LSA

[anisa-su993]

Bug was found in request payload allocation size for commands with variable data size payloads.

These 2 commits fixes the bug by adding data size as an input parameter.

Previously, the transfer_fw command looked like the below (with added print statements)

CXLMI_EXPORT int cxlmi_cmd_transfer_fw(struct cxlmi_endpoint *ep, 
                                       struct cxlmi_tunnel_info *ti, 
                                       struct cxlmi_cmd_transfer_fw *in) 
{ 
        struct cxlmi_cmd_transfer_fw *req_pl; 
        _cleanup_free_ struct cxlmi_cci_msg *req = NULL; 
        struct cxlmi_cci_msg rsp; 
        ssize_t req_sz, data_sz = struct_size(in, data, 0); 
        int rc = -1; 
 
        printf("Transfer FW Data Size: %lu\n", data_sz); 
        printf("sizeof(*in): %lu\n", sizeof(*in)); 
        req_sz = sizeof(*req_pl) + data_sz + sizeof(*req); 
 
        printf("req_sz: %lu\n", req_sz); 
        req = calloc(1, req_sz); 
        if (!req) 
                return -1; 
...

When tested with a short test program:

struct cxlmi_cmd_transfer_fw *transfer_fw = calloc(1, sizeof(*transfer_fw) + 27);

 rc =cxlmi_cmd_transfer_fw(ep, NULL, transfer_fw);

The output was:

Transfer FW Data Size: 128
sizeof(*in): 128
req_sz: 268

This showed that the req_payload size, which should have been the size of the request header + the size of the other fields in the transfer_fw struct + 27, but was instead the size of the request header + 2 * (size of the other fields in the transfer_fw struct).