Change create network UAPI to take a user buffer

To not allow the buffer for a network instance to be changed after creation, the create network UAPI will now take the network model data as a user buffer. The content of the user buffer is copied into an internally allocated DMA buffer that cannot be accessed by the user. This breaks the current API so the Linux kernel NPU driver version and the driver library version have been given major version bumps. All the tests, documentation and other applications affected by the changes have been updated accordingly. Change-Id: I25c785d75a24794c3db632e4abe5cfbb1c7ac190 Signed-off-by: Mikael Olsson <mikael.olsson@arm.com>
author: Mikael Olsson <mikael.olsson@arm.com> 2023-10-30 11:10:56 +0100
committer: Mikael Olsson <mikael.olsson@arm.com> 2023-11-06 09:36:00 +0100
commit: c081e5954cd92165b139488e76bdfef1402acee6 (patch)
tree: 32bc237c124e21f12287150cba040c87c8e8b7e3
parent: 9c999fdd40c0bf2ae420f6f3bfe013dc6baa73c1 (diff)
download: ethos-u-linux-driver-stack-c081e5954cd92165b139488e76bdfef1402acee6.tar.gz
25 files changed, 259 insertions, 209 deletions
diff --git a/README.md b/README.md
index 1b9a692..cdab1d4 100644
--- a/README.md
+++ b/README.md
@@ -219,7 +219,7 @@ dispatching inferences to the Ethos-U kernel driver.
 
 As the component diagram below illustrates the network is separated from the
 inference, allowing multiple inferences to share the same network. The buffer
-class is used to store any data.
+class is used to store IFM and OFM data.
 
 ![Driver library](docs/driver_library_component.svg "Driver library component diagram")
 
@@ -232,9 +232,9 @@ The `Device` class opens a file descriptor to the device node `/dev/ethosu<nr>`.
 This file descriptor is used to issue IOCTL request to kernel space to create
 buffers and networks.
 
-The `Network` class uses the `Device` object to create a new network object. The
-network model is stored in a `Buffer` that the network parses to discover the
-dimensions of the network model.
+The `Network` class uses the `Device` object to create a new network object.
+The network model is provided in a user buffer that is copied into an internal
+buffer and parsed to discover the dimensions of the network model.
 
 The `Inference` class uses the `Network` object to create an inference. The
 array of IFM `Buffers` need to be populated with data before the inference
@@ -259,13 +259,11 @@ for reading and/or writing.
 ## Network
 
 Creating a network assumes that the device node has already been opened, and
-that a buffer has been allocated and populated with the network model.
+that a user buffer populated with the network model is available.
 
 A new network is created by issuing an IOCTL command on the device node file
-descriptor. A file descriptor to a buffer - containing the network model - is
-passed in the IOCTL data. The network class increases the reference count on the
-buffer, preventing the buffer from being freed before the network object has
-been destructed.
+descriptor. A pointer to the user buffer - containing the network model - and
+its size is passed in the IOCTL data.
 
 ![Create network](docs/kernel_network.svg "Create network")
 
diff --git a/docs/driver_library_component.puml b/docs/driver_library_component.puml
index 1b640e2..6e39456 100644
--- a/docs/driver_library_component.puml
+++ b/docs/driver_library_component.puml
@@ -11,8 +11,7 @@ inf -> net
 inf -> buf: IFM and OFM
 
 net --> dev
-net --> buf: Network model
 
 buf -> dev
 
-@enduml
-\ No newline at end of file
+@enduml
diff --git a/docs/driver_library_component.svg b/docs/driver_library_component.svg
index bcb43f9..715da50 100644
--- a/docs/driver_library_component.svg
+++ b/docs/driver_library_component.svg
@@ -1,4 +1,12 @@
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" contentScriptType="application/ecmascript" contentStyleType="text/css" height="187px" preserveAspectRatio="none" style="width:214px;height:187px;background:#FEFEFE;" version="1.1" viewBox="0 0 214 187" width="214px" zoomAndPan="magnify"><defs><filter height="300%" id="fpjgrf9isy925" width="300%" x="-1" y="-1"><feGaussianBlur result="blurOut" stdDeviation="2.0"/><feColorMatrix in="blurOut" result="blurOut2" type="matrix" values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .4 0"/><feOffset dx="4.0" dy="4.0" in="blurOut2" result="blurOut3"/><feBlend in="SourceGraphic" in2="blurOut3" mode="normal"/></filter></defs><g><!--MD5=[e700746e0efa2c4773b8fec71443b5b6]
+entity inf--><rect fill="#FEFECE" filter="url(#fpjgrf9isy925)" height="36.2969" style="stroke: #A80036; stroke-width: 1.5;" width="85" x="6" y="8"/><rect fill="#FEFECE" height="5" style="stroke: #A80036; stroke-width: 1.5;" width="10" x="1" y="13"/><rect fill="#FEFECE" height="5" style="stroke: #A80036; stroke-width: 1.5;" width="10" x="1" y="34.2969"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="65" x="16" y="30.9951">Inference</text><!--MD5=[27d8026e1e607fa992f9f5b0cd222a86]
+entity net--><rect fill="#FEFECE" filter="url(#fpjgrf9isy925)" height="36.2969" style="stroke: #A80036; stroke-width: 1.5;" width="77" x="126" y="8"/><rect fill="#FEFECE" height="5" style="stroke: #A80036; stroke-width: 1.5;" width="10" x="121" y="13"/><rect fill="#FEFECE" height="5" style="stroke: #A80036; stroke-width: 1.5;" width="10" x="121" y="34.2969"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="57" x="136" y="30.9951">Network</text><!--MD5=[0026c2bef77b3322991a49ea733d1063]
+entity buf--><rect fill="#FEFECE" filter="url(#fpjgrf9isy925)" height="36.2969" style="stroke: #A80036; stroke-width: 1.5;" width="61" x="49" y="74"/><rect fill="#FEFECE" height="5" style="stroke: #A80036; stroke-width: 1.5;" width="10" x="44" y="79"/><rect fill="#FEFECE" height="5" style="stroke: #A80036; stroke-width: 1.5;" width="10" x="44" y="100.2969"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="41" x="59" y="96.9951">Buffer</text><!--MD5=[3d99d59a27ec55cd9b0b1490801f78bc]
+entity dev--><rect fill="#FEFECE" filter="url(#fpjgrf9isy925)" height="36.2969" style="stroke: #A80036; stroke-width: 1.5;" width="67" x="73" y="140"/><rect fill="#FEFECE" height="5" style="stroke: #A80036; stroke-width: 1.5;" width="10" x="68" y="145"/><rect fill="#FEFECE" height="5" style="stroke: #A80036; stroke-width: 1.5;" width="10" x="68" y="166.2969"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="47" x="83" y="162.9951">Device</text><!--MD5=[2ff72c400cccaeb19456038b10d7a192]
+link inf to net--><path d="M91.09,26 C100.94,26 110.79,26 120.64,26 " fill="none" id="inf-&gt;net" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="125.79,26,116.79,22,120.79,26,116.79,30,125.79,26" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[683c956fb43f11bd9ac76d5bc8360245]
+link inf to buf--><path d="M56.81,44.15 C60.49,51.76 64.87,60.8 68.8,68.9 " fill="none" id="inf-&gt;buf" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="71.17,73.8,70.8612,63.956,68.9971,69.2969,63.6562,67.4327,71.17,73.8" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[c137ea9796ba7150be1b84493d485127]
+link net to dev--><path d="M156.8,44.26 C146.35,67.67 127.7,109.49 116.28,135.08 " fill="none" id="net-&gt;dev" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="114.23,139.67,121.5367,133.066,116.258,135.0998,114.2243,129.8211,114.23,139.67" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[f081c634ca37a6c48a522a149df97049]
+link buf to dev--><path d="M86.74,110.15 C89.94,117.76 93.76,126.8 97.18,134.9 " fill="none" id="buf-&gt;dev" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="99.24,139.8,99.3972,129.9524,97.2825,135.1991,92.0358,133.0844,99.24,139.8" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[8c816b15a51d6b9c34284e9b0bbcc4d9]
 @startuml
 
 skinparam backgroundColor #FEFEFE
@@ -12,19 +20,17 @@ inf -> net
 inf -> buf: IFM and OFM
 
 net - -> dev
-net - -> buf: Network model
 
 buf -> dev
 
 @enduml
 
-PlantUML version 1.2017.15(Mon Jul 03 18:45:34 CEST 2017)
+PlantUML version 1.2020.02(Sun Mar 01 11:22:07 CET 2020)
 (GPL source distribution)
 Java Runtime: OpenJDK Runtime Environment
 JVM: OpenJDK 64-Bit Server VM
-Java Version: 11.0.11+9-Ubuntu-0ubuntu2.18.04
+Java Version: 11.0.20.1+1-post-Ubuntu-0ubuntu122.04
 Operating System: Linux
-OS Version: 5.4.0-73-generic
 Default Encoding: UTF-8
 Language: en
 Country: US
diff --git a/docs/driver_library_sequence.puml b/docs/driver_library_sequence.puml
index adac2f9..0e8c799 100644
--- a/docs/driver_library_sequence.puml
+++ b/docs/driver_library_sequence.puml
@@ -30,19 +30,10 @@ main -> ddev++: Device()
 return
 
 note over dnet
-    Allocate and fill network buffer
-end note
-
-main -> dbuf++: Buffer(device)
-    dbuf -> kbuf++: ioctl(BUFFER_CREATE)
-    return file descriptor
-return
-
-note over dnet
     Create network, parse network model
 end note
 
-main -> dnet++: Network(device, buffer)
+main -> dnet++: Network(device, user_buffer, size)
     dnet -> knet++: ioctl(NETWORK_CREATE)
     return file descriptor
 
diff --git a/docs/driver_library_sequence.svg b/docs/driver_library_sequence.svg
index 1103a05..b1ac54c 100644
--- a/docs/driver_library_sequence.svg
+++ b/docs/driver_library_sequence.svg
@@ -1,4 +1,4 @@
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 @startuml
 
 skinparam backgroundColor #FEFEFE
@@ -31,19 +31,10 @@ main -> ddev++: Device()
 return
 
 note over dnet
-    Allocate and fill network buffer
-end note
-
-main -> dbuf++: Buffer(device)
-    dbuf -> kbuf++: ioctl(BUFFER_CREATE)
-    return file descriptor
-return
-
-note over dnet
     Create network, parse network model
 end note
 
-main -> dnet++: Network(device, buffer)
+main -> dnet++: Network(device, user_buffer, size)
     dnet -> knet++: ioctl(NETWORK_CREATE)
     return file descriptor
 
@@ -79,13 +70,12 @@ return
 
 @enduml
 
-PlantUML version 1.2017.15(Mon Jul 03 18:45:34 CEST 2017)
+PlantUML version 1.2020.02(Sun Mar 01 11:22:07 CET 2020)
 (GPL source distribution)
 Java Runtime: OpenJDK Runtime Environment
 JVM: OpenJDK 64-Bit Server VM
-Java Version: 11.0.11+9-Ubuntu-0ubuntu2.18.04
+Java Version: 11.0.20.1+1-post-Ubuntu-0ubuntu122.04
 Operating System: Linux
-OS Version: 5.4.0-73-generic
 Default Encoding: UTF-8
 Language: en
 Country: US
diff --git a/docs/kernel_network.puml b/docs/kernel_network.puml
index 39c7f55..b9136ce 100644
--- a/docs/kernel_network.puml
+++ b/docs/kernel_network.puml
@@ -24,16 +24,16 @@ activate main
 
 note over main
     Create device
-    Allocate and fill network buffer
+    Provide user buffer with network model
 end note
 
-main -> dnet++: Network(device, buffer)
-    dnet -> kdev++: ioctl(NETWORK_CREATE, buffer)
+main -> dnet++: Network(device, user_buffer, size)
+    dnet -> kdev++: ioctl(NETWORK_CREATE, user_buffer, size)
         note over knet
             Create network and return file descriptor
         end note
 
-        kdev -> knet++: create(buffer)
+        kdev -> knet++: create(user_buffer, size)
         return file descriptor
     return file descriptor
 return
diff --git a/docs/kernel_network.svg b/docs/kernel_network.svg
index 8b3b4a3..2b8f753 100644
--- a/docs/kernel_network.svg
+++ b/docs/kernel_network.svg
@@ -1,4 +1,4 @@
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stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="148.5" x2="387.5" y1="143.8281" y2="143.8281"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="216" x="155.5" y="138.7622">Network(device, user_buffer, size)</text><polygon fill="#A80036" points="677.5,168.9609,687.5,172.9609,677.5,176.9609,681.5,172.9609" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="403.5" x2="683.5" y1="172.9609" y2="172.9609"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="267" x="410.5" y="167.895">ioctl(NETWORK_CREATE, user_buffer, size)</text><path d="M738,185.9609 L738,210.9609 L1017,210.9609 L1017,195.9609 L1007,185.9609 L738,185.9609 " fill="#FBFB77" filter="url(#fppms3ru5k1wp)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M1007,185.9609 L1007,195.9609 L1017,195.9609 L1007,185.9609 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="258" x="744" y="203.0278">Create network and return file descriptor</text><polygon fill="#A80036" points="862.5,237.2266,872.5,241.2266,862.5,245.2266,866.5,241.2266" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0;" x1="699.5" x2="868.5" y1="241.2266" y2="241.2266"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="156" x="706.5" y="236.1606">create(user_buffer, size)</text><polygon fill="#A80036" points="710.5,266.3594,700.5,270.3594,710.5,274.3594,706.5,270.3594" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="704.5" x2="878.5" y1="270.3594" y2="270.3594"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="86" x="716.5" y="265.2935">file descriptor</text><polygon fill="#A80036" points="414.5,295.4922,404.5,299.4922,414.5,303.4922,410.5,299.4922" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="408.5" x2="693.5" y1="299.4922" y2="299.4922"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="86" x="420.5" y="294.4263">file descriptor</text><polygon fill="#A80036" points="159.5,309.4922,149.5,313.4922,159.5,317.4922,155.5,313.4922" style="stroke: #A80036; stroke-width: 1.0;"/><line style="stroke: #A80036; stroke-width: 1.0; stroke-dasharray: 2.0,2.0;" x1="153.5" x2="397.5" y1="313.4922" y2="313.4922"/><!--MD5=[237279265ff59fe4aa02ccba32edf4aa]
 @startuml
 
 skinparam backgroundColor #FEFEFE
@@ -25,29 +25,28 @@ activate main
 
 note over main
     Create device
-    Allocate and fill network buffer
+    Provide user buffer with network model
 end note
 
-main -> dnet++: Network(device, buffer)
-    dnet -> kdev++: ioctl(NETWORK_CREATE, buffer)
+main -> dnet++: Network(device, user_buffer, size)
+    dnet -> kdev++: ioctl(NETWORK_CREATE, user_buffer, size)
         note over knet
             Create network and return file descriptor
         end note
 
-        kdev -> knet++: create(buffer)
+        kdev -> knet++: create(user_buffer, size)
         return file descriptor
     return file descriptor
 return
 
 @enduml
 
-PlantUML version 1.2017.15(Mon Jul 03 18:45:34 CEST 2017)
+PlantUML version 1.2020.02(Sun Mar 01 11:22:07 CET 2020)
 (GPL source distribution)
 Java Runtime: OpenJDK Runtime Environment
 JVM: OpenJDK 64-Bit Server VM
-Java Version: 11.0.11+9-Ubuntu-0ubuntu2.18.04
+Java Version: 11.0.20.1+1-post-Ubuntu-0ubuntu122.04
 Operating System: Linux
-OS Version: 5.4.0-73-generic
 Default Encoding: UTF-8
 Language: en
 Country: US
diff --git a/driver_library/include/ethosu.hpp b/driver_library/include/ethosu.hpp
index 47c1868..eaa1ce7 100644
--- a/driver_library/include/ethosu.hpp
+++ b/driver_library/include/ethosu.hpp
@@ -39,12 +39,12 @@
 
 namespace EthosU {
 
-constexpr uint32_t DRIVER_LIBRARY_VERSION_MAJOR = 2;
+constexpr uint32_t DRIVER_LIBRARY_VERSION_MAJOR = 3;
 constexpr uint32_t DRIVER_LIBRARY_VERSION_MINOR = 0;
 constexpr uint32_t DRIVER_LIBRARY_VERSION_PATCH = 0;
 
-constexpr uint32_t MAX_SUPPORTED_KERNEL_DRIVER_MAJOR_VERSION = 2;
-constexpr uint32_t MIN_SUPPORTED_KERNEL_DRIVER_MAJOR_VERSION = 2;
+constexpr uint32_t MAX_SUPPORTED_KERNEL_DRIVER_MAJOR_VERSION = 3;
+constexpr uint32_t MIN_SUPPORTED_KERNEL_DRIVER_MAJOR_VERSION = 3;
 
 class Exception : public std::exception {
 public:
@@ -168,12 +168,11 @@ private:
 
 class Network {
 public:
-    Network(const Device &device, std::shared_ptr<Buffer> &buffer);
+    Network(const Device &device, const unsigned char *networkData, size_t networkSize);
     Network(const Device &device, const unsigned index);
     virtual ~Network() noexcept(false);
 
     int ioctl(unsigned long cmd, void *data = nullptr);
-    std::shared_ptr<Buffer> getBuffer();
     const std::vector<size_t> &getIfmDims() const;
     size_t getIfmSize() const;
     const std::vector<size_t> &getOfmDims() const;
@@ -183,7 +182,6 @@ private:
     void collectNetworkInfo();
 
     int fd;
-    std::shared_ptr<Buffer> buffer;
     std::vector<size_t> ifmDims;
     std::vector<size_t> ofmDims;
 };
diff --git a/driver_library/python/README.md b/driver_library/python/README.md
index 7fae749..cc67ad9 100644
--- a/driver_library/python/README.md
+++ b/driver_library/python/README.md
@@ -165,8 +165,8 @@ object:
 
 ```python
 # from file:
-network_file = "/path/to/model.tflite"
-network_buffer = driver.Buffer(device, network_file)
+data_file = "/path/to/data.bin"
+buffer = driver.Buffer(device, data_file)
 
 # from numpy:
 ifm_zeros = numpy.zeros(ifm_size, dtype=np.uint8)
@@ -174,11 +174,15 @@ ifm_buffer = driver.Buffer(device, ifm_size)
 ifm_buffer.from_buffer(ifm_zeros.data)
 ```
 
-To create a network object, provide memory buffer for the model file and
-created device:
+To create a network object, provide the model file or a byte array with the
+network data and the created device:
 
 ```python
-network = driver.Network(device, network_buffer)
+# from file:
+network = driver.Network(device, "path/to/model.tflite")
+
+# from byte array:
+network = driver.Network(device, network_data)
 ```
 
 Inference object is instantiated with a network object and lists of input
diff --git a/driver_library/python/src/ethosu_driver/_utilities/driver_utilities.py b/driver_library/python/src/ethosu_driver/_utilities/driver_utilities.py
index fcea91f..ca39751 100644
--- a/driver_library/python/src/ethosu_driver/_utilities/driver_utilities.py
+++ b/driver_library/python/src/ethosu_driver/_utilities/driver_utilities.py
@@ -30,8 +30,7 @@ def load_model(device: Device, model: str) -> Network:
             `Network`: Return the object that represent the neural __network file descriptor received from the Ethos-U device.
     """
     logging.info("Creating network")
-    network_buffer = Buffer(device, model)
-    return Network(device, network_buffer)
+    return Network(device, model)
 
 
 def populate_buffers(input_data: List[bytearray], buffers: List[Buffer]):
diff --git a/driver_library/python/src/ethosu_driver/swig/driver.i b/driver_library/python/src/ethosu_driver/swig/driver.i
index 3e4e384..6e0ad25 100644
--- a/driver_library/python/src/ethosu_driver/swig/driver.i
+++ b/driver_library/python/src/ethosu_driver/swig/driver.i
@@ -293,12 +293,12 @@ public:
         buffer: data to be copied to the mapped memory.
 
     ") from_buffer;
-    %mutable_buffer(char* buffer, size_t size);
+    %buffer_in(char* buffer, size_t size, BUFFER_FLAG_RW);
     void from_buffer(char* buffer, size_t size) {
         char* data = $self->data();
         std::memcpy(data, buffer, size);
     }
-    %clear_mutable_buffer(char* buffer, size_t size);
+    %clear_buffer_in(char* buffer, size_t size);
 }
 
 %feature("docstring",
@@ -329,15 +329,6 @@ public:
 
     %feature("docstring",
     "
-    Returns associated memory buffer.
-
-    Returns:
-        `Buffer`: buffer object used during initialisation.
-    ") getBuffer;
-    std::shared_ptr<Buffer> getBuffer();
-
-    %feature("docstring",
-    "
     Returns saved sizes of the neural network model input feature maps.
 
     Returns:
@@ -374,21 +365,41 @@ public:
 };
 
 %extend Network {
-    Network(const Device &device, std::shared_ptr<Buffer> &buffer)
+
+    Network(const Device &device, const std::string& filename)
     {
-        if(buffer == nullptr){
-            throw EthosU::Exception(std::string("Failed to create the network, buffer is nullptr.").c_str());
+        std::ifstream stream(filename, std::ios::binary);
+        if (!stream.is_open()) {
+            throw EthosU::Exception(std::string("Failed to open file: ").append(filename).c_str());
         }
-        auto network = new EthosU::Network(device, buffer);
-        return network;
+
+        stream.seekg(0, std::ios_base::end);
+        size_t size = stream.tellg();
+        stream.seekg(0, std::ios_base::beg);
+
+        std::unique_ptr<unsigned char[]> buffer = std::make_unique<unsigned char[]>(size);
+        stream.read(reinterpret_cast<char*>(buffer.get()), size);
+        return new EthosU::Network(device, buffer.get(), size);
     }
-}
 
-%extend Network {
+    %buffer_in(const unsigned char* networkData, size_t networkSize, BUFFER_FLAG_RO);
+    Network(const Device &device, const unsigned char* networkData, size_t networkSize)
+    {
+        if(networkData == nullptr){
+            throw EthosU::Exception(std::string("Failed to create the network, networkData is nullptr.").c_str());
+        }
+
+        if(networkSize == 0U){
+            throw EthosU::Exception(std::string("Failed to create the network, networkSize is zero.").c_str());
+        }
+
+        return new EthosU::Network(device, networkData, networkSize);
+    }
+    %clear_buffer_in(const unsigned char* networkData, size_t networkSize);
+
     Network(const Device &device, const unsigned int index)
     {
-        auto network = new EthosU::Network(device, index);
-        return network;
+        return new EthosU::Network(device, index);
     }
 }
 
diff --git a/driver_library/python/src/ethosu_driver/swig/typemaps/buffer.i b/driver_library/python/src/ethosu_driver/swig/typemaps/buffer.i
index 13b7909..bb4627c 100644
--- a/driver_library/python/src/ethosu_driver/swig/typemaps/buffer.i
+++ b/driver_library/python/src/ethosu_driver/swig/typemaps/buffer.i
@@ -1,19 +1,25 @@
 //
-// SPDX-FileCopyrightText: Copyright 2021-2022 Arm Limited and/or its affiliates <open-source-office@arm.com>
+// SPDX-FileCopyrightText: Copyright 2021-2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
 // SPDX-License-Identifier: Apache-2.0
 //
-%define %mutable_buffer(TYPEMAP, SIZE)
+
+%define BUFFER_FLAG_RO 0 %enddef
+%define BUFFER_FLAG_RW PyBUF_WRITABLE %enddef
+
+%define %buffer_in(TYPEMAP, SIZE, FLAG)
     %typemap(in) (TYPEMAP, SIZE) {
-      int res; void *buf = 0; size_t size = 0;
       Py_buffer view;
-      res = PyObject_GetBuffer($input, &view, PyBUF_WRITABLE);
-      buf = view.buf;
-      size = view.len;
-      PyBuffer_Release(&view);
+
+      int res = PyObject_GetBuffer($input, &view, FLAG);
       if (res < 0) {
         PyErr_Clear();
         %argument_fail(res, "(TYPEMAP, SIZE)", $symname, $argnum);
       }
+
+      void *buf = view.buf;
+      size_t size = view.len;
+      PyBuffer_Release(&view);
+
       $1 = ($1_ltype) buf;
       $2 = ($2_ltype) size;
     }
@@ -23,12 +29,11 @@
     }
 %enddef
 
-%define %clear_mutable_buffer(TYPEMAP, SIZE)
+%define %clear_buffer_in(TYPEMAP, SIZE)
     %typemap(in) (TYPEMAP, SIZE);
     %typemap(typecheck) (TYPEMAP, SIZE);
 %enddef
 
-
 %define %driver_buffer_out
     %typemap(out) (char*) {
         auto size = arg1->size();
diff --git a/driver_library/python/test/test_driver.py b/driver_library/python/test/test_driver.py
index 0dd207f..e9cb5c8 100644
--- a/driver_library/python/test/test_driver.py
+++ b/driver_library/python/test/test_driver.py
@@ -15,11 +15,14 @@ def device(device_name):
 
 
 @pytest.fixture()
-def network_buffer(device, model_name, shared_data_folder):
+def network_file(model_name, shared_data_folder):
     network_file = os.path.join(shared_data_folder, model_name)
-    network_buffer = driver.Buffer(device, network_file)
-    yield network_buffer
+    yield network_file
 
+@pytest.fixture()
+def network(device, network_file):
+    network = driver.Network(device, network_file)
+    yield network
 
 @pytest.mark.parametrize('device_name', ['ethosu0'])
 def test_check_device_swig_ownership(device):
@@ -44,12 +47,33 @@ def test_device_wrong_name(device_name):
 
 
 @pytest.mark.parametrize('device_name', ['ethosu0'])
-def test_driver_network_filenotfound_exception(device, shared_data_folder):
+@pytest.mark.parametrize('model_name', ['model.tflite'])
+def test_driver_network_from_bytearray(device, network_file):
+    network_data = None
+    with open(network_file, 'rb') as file:
+        network_data = file.read()
+    network = driver.Network(device, network_data)
 
-    network_file = os.path.join(shared_data_folder, "some_unknown_model.tflite")
 
+@pytest.mark.parametrize('device_name', ['ethosu0'])
+def test_driver_network_from_empty_bytearray(device):
     with pytest.raises(RuntimeError) as err:
-        network_buffer = driver.Buffer(device, network_file)
+        network = driver.Network(device, bytearray())
+
+    assert 'Failed to create the network, networkSize is zero' in str(err.value)
+
+
+@pytest.mark.parametrize('device_name', ['ethosu0'])
+@pytest.mark.parametrize('model_name', ['model.tflite'])
+def test_driver_network_from_file(device, network_file):
+        network = driver.Network(device, network_file)
+
+
+@pytest.mark.parametrize('device_name', ['ethosu0'])
+@pytest.mark.parametrize('model_name', ['some_unknown_model.tflite'])
+def test_driver_network_filenotfound_exception(device, network_file):
+    with pytest.raises(RuntimeError) as err:
+        network = driver.Network(device, network_file)
 
     # Only check for part of the exception since the exception returns
     # absolute path which will change on different machines.
@@ -58,57 +82,51 @@ def test_driver_network_filenotfound_exception(device, shared_data_folder):
 
 @pytest.mark.parametrize('device_name', ['ethosu0'])
 @pytest.mark.parametrize('model_name', ['model.tflite'])
-def test_check_buffer_swig_ownership(network_buffer):
+def test_check_network_swig_ownership(network):
     # Check to see that SWIG has ownership for parser. This instructs SWIG to take
     # ownership of the return value. This allows the value to be automatically
     # garbage-collected when it is no longer in use
-    assert network_buffer.thisown
+    assert network.thisown
 
 
 @pytest.mark.parametrize('device_name', ['ethosu0'])
 @pytest.mark.parametrize('model_name', ['model.tflite'])
-def test_check_buffer_size(network_buffer):
-    assert network_buffer.size() > 0
+def test_check_network_ifm_size(device, network):
+    assert network.getIfmSize() > 0
 
 
 @pytest.mark.parametrize('device_name', ['ethosu0'])
 @pytest.mark.parametrize('model_name', ['model.tflite'])
-def test_check_buffer_clear(network_buffer):
-    network_buffer.clear()
-    for i in range(network_buffer.size()):
-        assert network_buffer.data()[i] == 0
+def test_check_network_ofm_size(device, network):
+    assert network.getOfmSize() > 0
 
 
 @pytest.mark.parametrize('device_name', ['ethosu0'])
-@pytest.mark.parametrize('model_name', ['model.tflite'])
-def test_check_buffer_getFd(network_buffer):
-    assert network_buffer.getFd() >= 0
+def test_check_buffer_swig_ownership(device):
+    buffer = driver.Buffer(device, 1024)
+    assert buffer.thisown
 
 
 @pytest.mark.parametrize('device_name', ['ethosu0'])
-@pytest.mark.parametrize('model_name', ['model.tflite'])
-def test_check_network_ifm_size(device, network_buffer):
-    network = driver.Network(device, network_buffer)
-    assert network.getIfmSize() > 0
-    assert network_buffer.thisown
-
-
-@pytest.mark.parametrize('device_name', [('ethosu0')])
-def test_check_network_buffer_none(device):
+def test_check_buffer_getFd(device):
+    buffer = driver.Buffer(device, 1024)
+    assert buffer.getFd() >= 0
 
-    with pytest.raises(RuntimeError) as err:
-        driver.Network(device, None)
 
-    # Only check for part of the exception since the exception returns
-    # absolute path which will change on different machines.
-    assert 'Failed to create the network' in str(err.value)
+@pytest.mark.parametrize('device_name', ['ethosu0'])
+def test_check_buffer_size(device):
+    buffer = driver.Buffer(device, 1024)
+    assert buffer.size() == 1024
 
 
 @pytest.mark.parametrize('device_name', ['ethosu0'])
 @pytest.mark.parametrize('model_name', ['model.tflite'])
-def test_check_network_ofm_size(device, network_buffer):
-    network = driver.Network(device, network_buffer)
-    assert network.getOfmSize() > 0
+def test_check_buffer_clear(device, network_file):
+    buffer = driver.Buffer(device, network_file)
+
+    buffer.clear()
+    for i in range(buffer.size()):
+        assert buffer.data()[i] == 0
 
 
 def test_getMaxPmuEventCounters():
diff --git a/driver_library/src/ethosu.cpp b/driver_library/src/ethosu.cpp
index 3c7dc31..7aec696 100644
--- a/driver_library/src/ethosu.cpp
+++ b/driver_library/src/ethosu.cpp
@@ -333,12 +333,13 @@ int Buffer::getFd() const {
  * Network
  ****************************************************************************/
 
-Network::Network(const Device &device, shared_ptr<Buffer> &buffer) : fd(-1), buffer(buffer) {
+Network::Network(const Device &device, const unsigned char *networkData, size_t networkSize) : fd(-1) {
     // Create buffer handle
     ethosu_uapi_network_create uapi;
-    uapi.type = ETHOSU_UAPI_NETWORK_BUFFER;
-    uapi.fd   = buffer->getFd();
-    fd        = device.ioctl(ETHOSU_IOCTL_NETWORK_CREATE, static_cast<void *>(&uapi));
+    uapi.type             = ETHOSU_UAPI_NETWORK_USER_BUFFER;
+    uapi.network.data_ptr = reinterpret_cast<uintptr_t>(networkData);
+    uapi.network.size     = networkSize;
+    fd                    = device.ioctl(ETHOSU_IOCTL_NETWORK_CREATE, static_cast<void *>(&uapi));
     try {
         collectNetworkInfo();
     } catch (std::exception &e) {
@@ -348,7 +349,7 @@ Network::Network(const Device &device, shared_ptr<Buffer> &buffer) : fd(-1), buf
         throw;
     }
 
-    Log(Severity::Info) << "Network(" << &device << ", " << &*buffer << "), this=" << this << ", fd=" << fd << endl;
+    Log(Severity::Info) << "Network(" << &device << "), this=" << this << ", fd=" << fd << endl;
 }
 
 Network::Network(const Device &device, const unsigned index) : fd(-1) {
@@ -391,10 +392,6 @@ int Network::ioctl(unsigned long cmd, void *data) {
     return eioctl(fd, cmd, data);
 }
 
-shared_ptr<Buffer> Network::getBuffer() {
-    return buffer;
-}
-
 const std::vector<size_t> &Network::getIfmDims() const {
     return ifmDims;
 }
diff --git a/kernel/ethosu_device.c b/kernel/ethosu_device.c
index 73ddb2e..6e2351d 100644
--- a/kernel/ethosu_device.c
+++ b/kernel/ethosu_device.c
@@ -312,8 +312,7 @@ static long ethosu_ioctl(struct file *file,
 			return ret;
 
 		dev_dbg(dev,
-			"Device ioctl: Network create. type=%u, fd/index=%u",
-			uapi.type, uapi.fd);
+			"Device ioctl: Network create. type=%u\n", uapi.type);
 
 		ret = ethosu_network_create(dev, &edev->mailbox, &uapi);
 
diff --git a/kernel/ethosu_inference.c b/kernel/ethosu_inference.c
index b985e75..57529f9 100644
--- a/kernel/ethosu_inference.c
+++ b/kernel/ethosu_inference.c
@@ -98,9 +98,7 @@ static int ethosu_inference_send(struct ethosu_inference *inf)
 	ret = ethosu_mailbox_inference(inf->mailbox, &inf->msg,
 				       inf->ifm_count, inf->ifm,
 				       inf->ofm_count, inf->ofm,
-				       inf->net->buf,
-				       inf->net->index,
-				       inf->pmu_event_config,
+				       inf->net, inf->pmu_event_config,
 				       ETHOSU_PMU_EVENT_MAX,
 				       inf->pmu_cycle_counter_enable);
 	if (ret) {
diff --git a/kernel/ethosu_mailbox.c b/kernel/ethosu_mailbox.c
index 9b9cd18..005e83e 100644
--- a/kernel/ethosu_mailbox.c
+++ b/kernel/ethosu_mailbox.c
@@ -239,8 +239,7 @@ int ethosu_mailbox_inference(struct ethosu_mailbox *mbox,
 			     struct ethosu_buffer **ifm,
 			     uint32_t ofm_count,
 			     struct ethosu_buffer **ofm,
-			     struct ethosu_buffer *network,
-			     uint32_t network_index,
+			     struct ethosu_network *network,
 			     uint8_t *pmu_event_config,
 			     uint8_t pmu_event_config_count,
 			     uint8_t pmu_cycle_counter_enable)
@@ -279,13 +278,13 @@ int ethosu_mailbox_inference(struct ethosu_mailbox *mbox,
 	for (i = 0; i < ETHOSU_CORE_PMU_MAX; i++)
 		inf_req->pmu_event_config[i] = pmu_event_config[i];
 
-	if (network != NULL) {
+	if (network->dma_mem != NULL) {
 		inf_req->network.type = ETHOSU_CORE_NETWORK_BUFFER;
 		ethosu_core_buffer_dma_mem_set(network->dma_mem,
 					       &inf_req->network.buffer);
 	} else {
 		inf_req->network.type = ETHOSU_CORE_NETWORK_INDEX;
-		inf_req->network.index = network_index;
+		inf_req->network.index = network->index;
 	}
 
 	return ethosu_send_locked(mbox, &rpmsg,
@@ -294,8 +293,7 @@ int ethosu_mailbox_inference(struct ethosu_mailbox *mbox,
 
 int ethosu_mailbox_network_info_request(struct ethosu_mailbox *mbox,
 					struct ethosu_mailbox_msg *msg,
-					struct ethosu_buffer *network,
-					uint32_t network_index)
+					struct ethosu_network *network)
 {
 	struct ethosu_core_rpmsg rpmsg = {
 		.header         = {
@@ -308,13 +306,13 @@ int ethosu_mailbox_network_info_request(struct ethosu_mailbox *mbox,
 
 	msg->type = rpmsg.header.type;
 
-	if (network != NULL) {
+	if (network->dma_mem != NULL) {
 		info_req->network.type = ETHOSU_CORE_NETWORK_BUFFER;
 		ethosu_core_buffer_dma_mem_set(network->dma_mem,
 					       &info_req->network.buffer);
 	} else {
 		info_req->network.type = ETHOSU_CORE_NETWORK_INDEX;
-		info_req->network.index = network_index;
+		info_req->network.index = network->index;
 	}
 
 	return ethosu_send_locked(mbox, &rpmsg,
diff --git a/kernel/ethosu_mailbox.h b/kernel/ethosu_mailbox.h
index c4c71a9..ab19613 100644
--- a/kernel/ethosu_mailbox.h
+++ b/kernel/ethosu_mailbox.h
@@ -1,5 +1,6 @@
 /*
- * Copyright 2020-2023 Arm Limited and/or its affiliates
+ * SPDX-FileCopyrightText: Copyright 2020-2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
+ * SPDX-License-Identifier: GPL-2.0-only
  *
  * This program is free software and is provided to you under the terms of the
  * GNU General Public License version 2 as published by the Free Software
@@ -14,8 +15,6 @@
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, you can access it online at
  * http://www.gnu.org/licenses/gpl-2.0.html.
- *
- * SPDX-License-Identifier: GPL-2.0-only
  */
 
 #ifndef ETHOSU_MAILBOX_H
@@ -37,9 +36,10 @@
 
 struct device;
 struct ethosu_buffer;
-struct ethosu_device;
 struct ethosu_core_msg;
 struct ethosu_core_queue;
+struct ethosu_device;
+struct ethosu_network;
 struct resource;
 
 typedef void (*ethosu_mailbox_cb)(void *user_arg);
@@ -168,8 +168,7 @@ int ethosu_mailbox_inference(struct ethosu_mailbox *mbox,
 			     struct ethosu_buffer **ifm,
 			     uint32_t ofm_count,
 			     struct ethosu_buffer **ofm,
-			     struct ethosu_buffer *network,
-			     uint32_t network_index,
+			     struct ethosu_network *network,
 			     uint8_t *pmu_event_config,
 			     uint8_t pmu_event_config_count,
 			     uint8_t pmu_cycle_counter_enable);
@@ -181,8 +180,7 @@ int ethosu_mailbox_inference(struct ethosu_mailbox *mbox,
  */
 int ethosu_mailbox_network_info_request(struct ethosu_mailbox *mbox,
 					struct ethosu_mailbox_msg *msg,
-					struct ethosu_buffer *network,
-					uint32_t network_index);
+					struct ethosu_network *network);
 
 /**
  * ethosu_mailbox_cancel_inference() - Send inference cancellation
diff --git a/kernel/ethosu_network.c b/kernel/ethosu_network.c
index f7871de..58d5c77 100644
--- a/kernel/ethosu_network.c
+++ b/kernel/ethosu_network.c
@@ -23,8 +23,8 @@
 
 #include "ethosu_network.h"
 
-#include "ethosu_buffer.h"
 #include "ethosu_device.h"
+#include "ethosu_dma_mem.h"
 #include "ethosu_inference.h"
 #include "ethosu_network_info.h"
 #include "uapi/ethosu.h"
@@ -70,8 +70,8 @@ static void ethosu_network_destroy(struct kref *kref)
 
 	dev_dbg(dev, "Network destroy. net=0x%pK\n", net);
 
-	if (net->buf != NULL)
-		ethosu_buffer_put(net->buf);
+	if (net->dma_mem != NULL)
+		ethosu_dma_mem_free(&net->dma_mem);
 
 	memset(net, 0, sizeof(*net));
 	devm_kfree(dev, net);
@@ -151,7 +151,8 @@ int ethosu_network_create(struct device *dev,
 			  struct ethosu_uapi_network_create *uapi)
 {
 	struct ethosu_network *net;
-	int ret = -ENOMEM;
+	const void __user *data;
+	int ret;
 
 	net = devm_kzalloc(dev, sizeof(*net), GFP_KERNEL);
 	if (!net)
@@ -159,17 +160,34 @@ int ethosu_network_create(struct device *dev,
 
 	net->dev = dev;
 	net->mailbox = mailbox;
-	net->buf = NULL;
 	kref_init(&net->kref);
 
 	switch (uapi->type) {
-	case ETHOSU_UAPI_NETWORK_BUFFER:
-		net->buf = ethosu_buffer_get_from_fd(uapi->fd);
-		if (IS_ERR(net->buf)) {
-			ret = PTR_ERR(net->buf);
+	case ETHOSU_UAPI_NETWORK_USER_BUFFER:
+		if (!uapi->network.data_ptr) {
+			dev_err(dev, "Invalid network data ptr\n");
+			ret = -EINVAL;
 			goto free_net;
 		}
 
+		if (!uapi->network.size) {
+			dev_err(dev, "Invalid network data size\n");
+			ret = -EINVAL;
+			goto free_net;
+		}
+
+		net->dma_mem = ethosu_dma_mem_alloc(dev, uapi->network.size);
+		if (IS_ERR(net->dma_mem)) {
+			ret = PTR_ERR(net->dma_mem);
+			goto free_net;
+		}
+
+		data = u64_to_user_ptr(uapi->network.data_ptr);
+		ret = copy_from_user(net->dma_mem->cpu_addr, data,
+				     uapi->network.size);
+		if (ret)
+			goto free_dma_mem;
+
 		break;
 	case ETHOSU_UAPI_NETWORK_INDEX:
 		net->index = uapi->index;
@@ -182,20 +200,20 @@ int ethosu_network_create(struct device *dev,
 	ret = anon_inode_getfd("ethosu-network", &ethosu_network_fops, net,
 			       O_RDWR | O_CLOEXEC);
 	if (ret < 0)
-		goto put_buf;
+		goto free_dma_mem;
 
 	net->file = fget(ret);
 	fput(net->file);
 
 	dev_dbg(dev,
 		"Network create. file=0x%pK, fd=%d, net=0x%pK, buf=0x%pK, index=%u",
-		net->file, ret, net, net->buf, net->index);
+		net->file, ret, net, net->dma_mem, net->index);
 
 	return ret;
 
-put_buf:
-	if (net->buf != NULL)
-		ethosu_buffer_put(net->buf);
+free_dma_mem:
+	if (net->dma_mem != NULL)
+		ethosu_dma_mem_free(&net->dma_mem);
 
 free_net:
 	memset(net, 0, sizeof(*net));
diff --git a/kernel/ethosu_network.h b/kernel/ethosu_network.h
index e0d41b1..5484bac 100644
--- a/kernel/ethosu_network.h
+++ b/kernel/ethosu_network.h
@@ -1,5 +1,6 @@
 /*
- * Copyright 2020,2022-2023 Arm Limited and/or its affiliates
+ * SPDX-FileCopyrightText: Copyright 2020,2022-2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
+ * SPDX-License-Identifier: GPL-2.0-only
  *
  * This program is free software and is provided to you under the terms of the
  * GNU General Public License version 2 as published by the Free Software
@@ -14,8 +15,6 @@
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, you can access it online at
  * http://www.gnu.org/licenses/gpl-2.0.html.
- *
- * SPDX-License-Identifier: GPL-2.0-only
  */
 
 #ifndef ETHOSU_NETWORK_H
@@ -42,7 +41,7 @@ struct ethosu_network {
 	struct ethosu_mailbox *mailbox;
 	struct file           *file;
 	struct kref           kref;
-	struct ethosu_buffer  *buf;
+	struct ethosu_dma_mem *dma_mem;
 	uint32_t              index;
 };
 
diff --git a/kernel/ethosu_network_info.c b/kernel/ethosu_network_info.c
index feabcae..011a0b4 100644
--- a/kernel/ethosu_network_info.c
+++ b/kernel/ethosu_network_info.c
@@ -15,7 +15,6 @@
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, you can access it online at
  * http://www.gnu.org/licenses/gpl-2.0.html.
- *
  */
 
 /****************************************************************************
@@ -39,8 +38,7 @@ static inline int ethosu_network_info_send(struct ethosu_network_info *info,
 	/* Send network info request to firmware */
 	return ethosu_mailbox_network_info_request(mailbox,
 						   &info->msg,
-						   info->net->buf,
-						   info->net->index);
+						   info->net);
 }
 
 static void ethosu_network_info_fail(struct ethosu_mailbox_msg *msg)
diff --git a/kernel/uapi/ethosu.h b/kernel/uapi/ethosu.h
index 4e4d180..35eaf60 100644
--- a/kernel/uapi/ethosu.h
+++ b/kernel/uapi/ethosu.h
@@ -67,7 +67,7 @@ namespace EthosU {
 #define ETHOSU_PMU_EVENT_MAX             8
 
 /* Kernel driver version */
-#define ETHOSU_KERNEL_DRIVER_VERSION_MAJOR 2
+#define ETHOSU_KERNEL_DRIVER_VERSION_MAJOR 3
 #define ETHOSU_KERNEL_DRIVER_VERSION_MINOR 0
 #define ETHOSU_KERNEL_DRIVER_VERSION_PATCH 0
 
@@ -109,13 +109,14 @@ struct ethosu_uapi_buffer_create {
 
 /**
  * enum ethosu_uapi_network_type - Network buffer type.
- * @ETHOSU_UAPI_NETWORK_BUFFER:	Network is stored in a buffer handle.
- * @ETHOSU_UAPI_NETWORK_INDEX:	Network is built into firmware and referenced by
- *                              index.
+ * @ETHOSU_UAPI_NETWORK_USER_BUFFER:	Network data is provided in a user
+ *					buffer.
+ * @ETHOSU_UAPI_NETWORK_INDEX:		Network is built into firmware and
+ *					referenced by index.
  */
 enum ethosu_uapi_network_type {
-	ETHOSU_UAPI_NETWORK_BUFFER = 1,
-	ETHOSU_UAPI_NETWORK_INDEX
+	ETHOSU_UAPI_NETWORK_USER_BUFFER = 1,
+	ETHOSU_UAPI_NETWORK_INDEX,
 };
 
 /**
@@ -127,7 +128,10 @@ enum ethosu_uapi_network_type {
 struct ethosu_uapi_network_create {
 	uint32_t type;
 	union {
-		__u32 fd;
+		struct {
+			__u64 data_ptr;
+			__u32 size;
+		}     network;
 		__u32 index;
 	};
 };
diff --git a/tests/cancel_inference_test.cpp b/tests/cancel_inference_test.cpp
index 846a29f..7f3fe74 100644
--- a/tests/cancel_inference_test.cpp
+++ b/tests/cancel_inference_test.cpp
@@ -40,9 +40,7 @@ int64_t defaultTimeout = 60000000000;
 
 void testCancelInference(const Device &device) {
     try {
-        auto networkBuffer = std::make_shared<Buffer>(device, sizeof(networkModelData));
-        std::memcpy(networkBuffer->data(), networkModelData, sizeof(networkModelData));
-        auto network = std::make_shared<Network>(device, networkBuffer);
+        auto network = std::make_shared<Network>(device, networkModelData, sizeof(networkModelData));
 
         std::vector<std::shared_ptr<Buffer>> inputBuffers;
         std::vector<std::shared_ptr<Buffer>> outputBuffers;
@@ -79,9 +77,7 @@ void testCancelInference(const Device &device) {
 
 void testRejectInference(const Device &device) {
     try {
-        auto networkBuffer = std::make_shared<Buffer>(device, sizeof(networkModelData));
-        std::memcpy(networkBuffer->data(), networkModelData, sizeof(networkModelData));
-        auto network = std::make_shared<Network>(device, networkBuffer);
+        auto network = std::make_shared<Network>(device, networkModelData, sizeof(networkModelData));
 
         std::vector<std::shared_ptr<Buffer>> inputBuffers;
         std::vector<std::shared_ptr<Buffer>> outputBuffers;
diff --git a/tests/run_inference_test.cpp b/tests/run_inference_test.cpp
index 6b17ac2..512a2a0 100644
--- a/tests/run_inference_test.cpp
+++ b/tests/run_inference_test.cpp
@@ -111,10 +111,7 @@ void testNetworkInfoNotExistentIndex(const Device &device) {
 
 void testNetworkInfoBuffer(const Device &device) {
     try {
-        std::shared_ptr<Buffer> buffer = std::make_shared<Buffer>(device, sizeof(networkModelData));
-        std::memcpy(buffer->data(), networkModelData, sizeof(networkModelData));
-        Network network(device, buffer);
-
+        Network network(device, networkModelData, sizeof(networkModelData));
         TEST_ASSERT(network.getIfmDims().size() == 1);
         TEST_ASSERT(network.getOfmDims().size() == 1);
     } catch (std::exception &e) { throw TestFailureException("NetworkInfo buffer test: ", e.what()); }
@@ -122,11 +119,8 @@ void testNetworkInfoBuffer(const Device &device) {
 
 void testNetworkInfoUnparsableBuffer(const Device &device) {
     try {
-        auto buffer = std::make_shared<Buffer>(device, sizeof(networkModelData) / 4);
-        std::memcpy(buffer->data(), networkModelData + sizeof(networkModelData) / 4, sizeof(networkModelData) / 4);
-
         try {
-            Network network(device, buffer);
+            Network network(device, networkModelData + sizeof(networkModelData) / 4, sizeof(networkModelData) / 4);
             FAIL();
         } catch (Exception) {
             // good, it should have thrown!
@@ -148,11 +142,41 @@ void testNetworkInvalidType(const Device &device) {
     } catch (std::exception &e) { throw TestFailureException("NetworkCreate invalid type test: ", e.what()); }
 }
 
+void testNetworkInvalidDataPtr(const Device &device) {
+    const std::string expected_error =
+        std::string("IOCTL cmd=") + std::to_string(ETHOSU_IOCTL_NETWORK_CREATE) + " failed: " + std::strerror(EINVAL);
+    struct ethosu_uapi_network_create net_req = {};
+    net_req.type                              = ETHOSU_UAPI_NETWORK_USER_BUFFER;
+    net_req.network.data_ptr                  = 0U;
+    net_req.network.size                      = 128U;
+    try {
+        int r = device.ioctl(ETHOSU_IOCTL_NETWORK_CREATE, &net_req);
+        FAIL();
+    } catch (Exception &e) {
+        // The call is expected to throw
+        TEST_ASSERT(expected_error.compare(e.what()) == 0);
+    } catch (std::exception &e) { throw TestFailureException("NetworkCreate invalid data ptr: ", e.what()); }
+}
+
+void testNetworkInvalidDataSize(const Device &device) {
+    const std::string expected_error =
+        std::string("IOCTL cmd=") + std::to_string(ETHOSU_IOCTL_NETWORK_CREATE) + " failed: " + std::strerror(EINVAL);
+    struct ethosu_uapi_network_create net_req = {};
+    net_req.type                              = ETHOSU_UAPI_NETWORK_USER_BUFFER;
+    net_req.network.data_ptr                  = reinterpret_cast<uintptr_t>(networkModelData);
+    net_req.network.size                      = 0U;
+    try {
+        int r = device.ioctl(ETHOSU_IOCTL_NETWORK_CREATE, &net_req);
+        FAIL();
+    } catch (Exception &e) {
+        // The call is expected to throw
+        TEST_ASSERT(expected_error.compare(e.what()) == 0);
+    } catch (std::exception &e) { throw TestFailureException("NetworkCreate invalid data size: ", e.what()); }
+}
+
 void testRunInferenceBuffer(const Device &device) {
     try {
-        auto networkBuffer = std::make_shared<Buffer>(device, sizeof(networkModelData));
-        std::memcpy(networkBuffer->data(), networkModelData, sizeof(networkModelData));
-        auto network = std::make_shared<Network>(device, networkBuffer);
+        auto network = std::make_shared<Network>(device, networkModelData, sizeof(networkModelData));
 
         std::vector<std::shared_ptr<Buffer>> inputBuffers;
         std::vector<std::shared_ptr<Buffer>> outputBuffers;
@@ -197,6 +221,8 @@ int main() {
         testCapabilties(device);
         testBufferSeek(device);
         testNetworkInvalidType(device);
+        testNetworkInvalidDataPtr(device);
+        testNetworkInvalidDataSize(device);
         testNetworkInfoNotExistentIndex(device);
         testNetworkInfoBuffer(device);
         testNetworkInfoUnparsableBuffer(device);
diff --git a/utils/inference_runner/inference_runner.cpp b/utils/inference_runner/inference_runner.cpp
index c7a18b0..721cd57 100644
--- a/utils/inference_runner/inference_runner.cpp
+++ b/utils/inference_runner/inference_runner.cpp
@@ -25,6 +25,7 @@
 #include <stdio.h>
 #include <string>
 #include <unistd.h>
+#include <utility>
 
 using namespace std;
 using namespace EthosU;
@@ -56,7 +57,7 @@ void rangeCheck(const int i, const int argc, const string arg) {
     }
 }
 
-shared_ptr<Buffer> allocAndFill(Device &device, const string filename) {
+pair<unique_ptr<unsigned char[]>, size_t> getNetworkData(const string filename) {
     ifstream stream(filename, ios::binary);
     if (!stream.is_open()) {
         cerr << "Error: Failed to open '" << filename << "'" << endl;
@@ -67,10 +68,10 @@ shared_ptr<Buffer> allocAndFill(Device &device, const string filename) {
     size_t size = stream.tellg();
     stream.seekg(0, ios_base::beg);
 
-    shared_ptr<Buffer> buffer = make_shared<Buffer>(device, size);
-    stream.read(buffer->data(), size);
+    unique_ptr<unsigned char[]> data = std::make_unique<unsigned char[]>(size);
+    stream.read(reinterpret_cast<char *>(data.get()), size);
 
-    return buffer;
+    return make_pair(std::move(data), size);
 }
 
 shared_ptr<Inference> createInference(Device &device,
@@ -234,8 +235,8 @@ int main(int argc, char *argv[]) {
         shared_ptr<Network> network;
 
         if (networkIndex < 0) {
-            shared_ptr<Buffer> networkBuffer = allocAndFill(device, networkArg);
-            network                          = make_shared<Network>(device, networkBuffer);
+            auto networkData = getNetworkData(networkArg);
+            network          = make_shared<Network>(device, networkData.first.get(), networkData.second);
         } else {
             network = make_shared<Network>(device, networkIndex);
         }
author	Mikael Olsson <mikael.olsson@arm.com>	2023-10-30 11:10:56 +0100
committer	Mikael Olsson <mikael.olsson@arm.com>	2023-11-06 09:36:00 +0100
commit	c081e5954cd92165b139488e76bdfef1402acee6 (patch)
tree	32bc237c124e21f12287150cba040c87c8e8b7e3
parent	9c999fdd40c0bf2ae420f6f3bfe013dc6baa73c1 (diff)
download	ethos-u-linux-driver-stack-c081e5954cd92165b139488e76bdfef1402acee6.tar.gz