static void pdu_receive_proxy(struct pdu *pdu) { size_t len; assert(proxy_mode); kernel_receive(pdu); len = pdu_ahs_length(pdu); if (len > 0) log_errx(1, "protocol error: non-empty AHS"); len = pdu_data_segment_length(pdu); assert(len <= MAX_DATA_SEGMENT_LENGTH); pdu->pdu_data_len = len; }
void pdu_receive(struct pdu *pdu) { size_t len, padding; char dummy[4]; #ifdef ICL_KERNEL_PROXY if (pdu->pdu_connection->conn_conf.isc_iser != 0) return (pdu_receive_proxy(pdu)); #endif assert(pdu->pdu_connection->conn_conf.isc_iser == 0); pdu_read(pdu->pdu_connection->conn_socket, (char *)pdu->pdu_bhs, sizeof(*pdu->pdu_bhs)); len = pdu_ahs_length(pdu); if (len > 0) log_errx(1, "protocol error: non-empty AHS"); len = pdu_data_segment_length(pdu); if (len > 0) { if (len > ISCSI_MAX_DATA_SEGMENT_LENGTH) { log_errx(1, "protocol error: received PDU " "with DataSegmentLength exceeding %d", ISCSI_MAX_DATA_SEGMENT_LENGTH); } pdu->pdu_data_len = len; pdu->pdu_data = malloc(len); if (pdu->pdu_data == NULL) log_err(1, "malloc"); pdu_read(pdu->pdu_connection->conn_socket, (char *)pdu->pdu_data, pdu->pdu_data_len); padding = pdu_padding(pdu); if (padding != 0) { assert(padding < sizeof(dummy)); pdu_read(pdu->pdu_connection->conn_socket, (char *)dummy, padding); } } }
static void pdu_receive_proxy(struct pdu *pdu) { struct connection *conn; struct iscsi_daemon_receive *idr; size_t len; int error; conn = pdu->pdu_connection; assert(conn->conn_conf.isc_iser != 0); pdu->pdu_data = malloc(conn->conn_max_recv_data_segment_length); if (pdu->pdu_data == NULL) log_err(1, "malloc"); idr = calloc(1, sizeof(*idr)); if (idr == NULL) log_err(1, "calloc"); idr->idr_session_id = conn->conn_session_id; idr->idr_bhs = pdu->pdu_bhs; idr->idr_data_segment_len = conn->conn_max_recv_data_segment_length; idr->idr_data_segment = pdu->pdu_data; error = ioctl(conn->conn_iscsi_fd, ISCSIDRECEIVE, idr); if (error != 0) log_err(1, "ISCSIDRECEIVE"); len = pdu_ahs_length(pdu); if (len > 0) log_errx(1, "protocol error: non-empty AHS"); len = pdu_data_segment_length(pdu); assert(len <= (size_t)conn->conn_max_recv_data_segment_length); pdu->pdu_data_len = len; free(idr); }