1 files changed, 122 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/iot/socket/libraries/mbuf/mbuf.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/iot/socket/libraries/mbuf/mbuf.c
new file mode 100644
index 0000000..d4b0c79
--- /dev/null
+++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/iot/socket/libraries/mbuf/mbuf.c
@@ -0,0 +1,122 @@
+/**
+ * Copyright (c) 2015 - 2018, Nordic Semiconductor ASA
+ * 
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form, except as embedded into a Nordic
+ *    Semiconductor ASA integrated circuit in a product or a software update for
+ *    such product, must reproduce the above copyright notice, this list of
+ *    conditions and the following disclaimer in the documentation and/or other
+ *    materials provided with the distribution.
+ * 
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ * 
+ * 4. This software, with or without modification, must only be used with a
+ *    Nordic Semiconductor ASA integrated circuit.
+ * 
+ * 5. Any software provided in binary form under this license must not be reverse
+ *    engineered, decompiled, modified and/or disassembled.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ */
+#include "iot_defines.h"
+#include "iot_errors.h"
+#include "sdk_config.h"
+#include "mem_manager.h"
+#include "mbuf.h"
+#include "nrf_fifo.h"
+#include "socket_common.h"
+
+uint32_t mbuf_init(mbuf_t        * p_mbuf,
+                   mbuf_read_fn    read_fn,
+                   mbuf_buf_len_fn buf_len_fn,
+                   mbuf_free_fn    free_fn,
+                   uint32_t        nmemb)
+{
+    p_mbuf->p_current = NULL;
+    p_mbuf->read_pos  = 0;
+    p_mbuf->read      = read_fn;
+    p_mbuf->buf_len   = buf_len_fn;
+    p_mbuf->free      = free_fn;
+    return nrf_fifo_init(&p_mbuf->fifo, nmemb, socket_wait, free_fn);
+}
+
+void mbuf_deinit(mbuf_t * p_mbuf)
+{
+    if (p_mbuf->p_current != NULL)
+    {
+        p_mbuf->free(p_mbuf->p_current);
+        p_mbuf->p_current = NULL;
+    }
+
+    p_mbuf->read_pos = 0;
+    p_mbuf->read     = NULL;
+    p_mbuf->buf_len  = NULL;
+    p_mbuf->free     = NULL;
+    nrf_fifo_deinit(&p_mbuf->fifo);
+}
+
+static bool mbuf_empty_current(mbuf_t * p_mbuf)
+{
+    return (p_mbuf->buf_len(p_mbuf->p_current) == p_mbuf->read_pos);
+}
+
+bool mbuf_empty(mbuf_t * p_mbuf)
+{
+    return ((p_mbuf->p_current == NULL || mbuf_empty_current(p_mbuf)) &&
+            nrf_fifo_empty(&p_mbuf->fifo));
+}
+
+uint32_t mbuf_write(mbuf_t * p_mbuf, void * p_ctx)
+{
+    return nrf_fifo_enq(&p_mbuf->fifo, p_ctx, false);
+}
+
+static void mbuf_load(mbuf_t * p_mbuf)
+{
+    if (p_mbuf->p_current == NULL)
+    {
+        (void)nrf_fifo_deq(&p_mbuf->fifo, &p_mbuf->p_current, false);
+    }
+}
+
+uint32_t mbuf_read(mbuf_t * p_mbuf, void * p_buf, uint32_t buf_size)
+{
+    uint32_t nbytes = 0;
+    while (nbytes < buf_size && mbuf_empty(p_mbuf) == false)
+    {
+        mbuf_load(p_mbuf);
+        void * p_current = p_mbuf->p_current;
+        const uint32_t copy_len = p_mbuf->read(p_current,
+                                               p_mbuf->read_pos,
+                                               ((uint8_t *)p_buf) + nbytes,
+                                               buf_size - nbytes);
+        p_mbuf->read_pos += copy_len;
+        nbytes += copy_len;
+        if (mbuf_empty_current(p_mbuf) == true)
+        {
+            p_mbuf->free(p_mbuf->p_current);
+            p_mbuf->p_current = NULL;
+            p_mbuf->read_pos = 0;
+        }
+    }
+    return nbytes;
+}