Rx kinda working

Author: multiplemonomials

connectivity/drivers/emac/TARGET_STM/STM32EthMACv2.cpp

@@ -143,7 +143,8 @@ namespace mbed {
         // Update tail ptr to issue "rx poll demand" and mark this descriptor for receive.
         // Rx stops when the current and tail pointers are equal, so we want to set the tail pointer
         // to one location after the last DMA-owned descriptor in the FIFO.
-        base->DMACRDTPR = reinterpret_cast<uint32_t>(&rxDescs[rxBuildIndex]);
+        const auto nextDescIdx = (descIdx + 1) % RX_NUM_DESCS;
+        base->DMACRDTPR = reinterpret_cast<uint32_t>(&rxDescs[nextDescIdx]);
     }
 
     size_t STM32EthMacV2::RxDMA::getTotalLen(const size_t firstDescIdx) {

connectivity/drivers/emac/include/GenericEthDMA.h

@@ -352,12 +352,12 @@ namespace mbed {
             // At the start, we own all the descriptors
             rxDescsOwnedByApplication = RX_NUM_DESCS;
 
-            // Build all descriptors
-            rebuildDescriptors();
-
             // init DMA peripheral
             startDMA();
 
+            // Build all descriptors
+            rebuildDescriptors();
+
             return CompositeEMAC::ErrCode::SUCCESS;
         }
 

connectivity/netsocket/tests/emac_test_utils/EmacTestMemoryManager.cpp

@@ -182,7 +182,7 @@ emac_mem_buf_t *EmacTestMemoryManager::alloc_pool(uint32_t size, uint32_t align,
 
     // Contiguous allocation
     if (size + align <= m_alloc_unit) {
-        if (m_pool_bufs_used > m_pool_size) {
+        if (m_pool_bufs_used > MBED_CONF_NSAPI_EMAC_RX_POOL_NUM_BUFS) {
             return nullptr;
         }
 
@@ -215,7 +215,7 @@ emac_mem_buf_t *EmacTestMemoryManager::alloc_pool(uint32_t size, uint32_t align,
             size_left = 0;
         }
 
-        if (m_pool_bufs_used > m_pool_size) {
+        if (m_pool_bufs_used > MBED_CONF_NSAPI_EMAC_RX_POOL_NUM_BUFS) {
             // No simulated pool space left, free and return nullptr
             if (first_buf != nullptr) {
                 free(first_buf);

connectivity/netsocket/tests/emac_test_utils/EmacTestMemoryManager.h

@@ -134,7 +134,6 @@ class EmacTestMemoryManager : public EMACMemoryManager {
     mutable rtos::Mutex m_mem_mutex;
     std::list<emac_memory_t *> m_mem_buffers;
     unsigned int m_alloc_unit;
-    size_t m_pool_size;
     size_t m_pool_bufs_used = 0;
     bool m_memory_available;
 };