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@@ -3027,6 +3027,9 @@ struct rt_stm32_eth
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/* interface address info. */
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rt_uint8_t dev_addr[MAX_ADDR_LEN]; /* hw address */
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+
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+ uint32_t ETH_HashTableHigh;
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+ uint32_t ETH_HashTableLow;
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};
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static struct rt_stm32_eth stm32_eth_device;
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static struct rt_semaphore tx_buf_free;
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@@ -3082,10 +3085,118 @@ void ETH_IRQHandler(void)
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/* RT-Thread Device Interface */
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+#if (LWIP_IPV4 && LWIP_IGMP) || (LWIP_IPV6 && LWIP_IPV6_MLD)
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+/* polynomial: 0x04C11DB7 */
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+static uint32_t ethcrc(const uint8_t *data, size_t length)
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+{
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+ uint32_t crc = 0xffffffff;
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+ size_t i;
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+ int j;
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+
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+ for (i = 0; i < length; i++)
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+ {
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+ for (j = 0; j < 8; j++)
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+ {
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+ if (((crc >> 31) ^ (data[i] >> j)) & 0x01)
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+ {
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+ /* x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1 */
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+ crc = (crc << 1) ^ 0x04C11DB7;
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+ }
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+ else
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+ {
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+ crc = crc << 1;
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+ }
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+ }
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+ }
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+
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+ return ~crc;
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+}
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+
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+#define HASH_BITS 6 /* #bits in hash */
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+static void register_multicast_address(struct rt_stm32_eth *stm32_eth, const uint8_t *mac)
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+{
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+ uint32_t crc;
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+ uint8_t hash;
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+
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+ /* calculate crc32 value of mac address */
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+ crc = ethcrc(mac, 6);
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+
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+ /* only upper 6 bits (HASH_BITS) are used
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+ * which point to specific bit in he hash registers
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+ */
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+ hash = (crc >> 26) & 0x3F;
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+ //rt_kprintf("register_multicast_address crc: %08X hash: %02X\n", crc, hash);
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+
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+ if (hash > 31)
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+ {
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+ stm32_eth->ETH_HashTableHigh |= 1 << (hash - 32);
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+ ETH->MACHTHR = stm32_eth->ETH_HashTableHigh;
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+ }
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+ else
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+ {
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+ stm32_eth->ETH_HashTableLow |= 1 << hash;
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+ ETH->MACHTLR = stm32_eth->ETH_HashTableLow;
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+ }
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+}
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+#endif /* (LWIP_IPV4 && LWIP_IGMP) || (LWIP_IPV6 && LWIP_IPV6_MLD) */
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+
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+#if LWIP_IPV4 && LWIP_IGMP
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+static err_t igmp_mac_filter( struct netif *netif, const ip4_addr_t *ip4_addr, u8_t action )
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+{
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+ uint8_t mac[6];
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+ const uint8_t *p = (const uint8_t *)ip4_addr;
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+ struct rt_stm32_eth *stm32_eth = (struct rt_stm32_eth *)netif->state;
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+
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+ mac[0] = 0x01;
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+ mac[1] = 0x00;
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+ mac[2] = 0x5E;
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+ mac[3] = *(p+1) & 0x7F;
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+ mac[4] = *(p+2);
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+ mac[5] = *(p+3);
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+
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+ register_multicast_address(stm32_eth, mac);
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+
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+ if(1)
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+ {
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+ rt_kprintf("%s %s %s ", __FUNCTION__, (action==NETIF_ADD_MAC_FILTER)?"add":"del", ip4addr_ntoa(ip4_addr));
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+ rt_kprintf("%02X:%02X:%02X:%02X:%02X:%02X\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
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+ }
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+
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+ return 0;
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+}
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+#endif /* LWIP_IPV4 && LWIP_IGMP */
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+
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+#if LWIP_IPV6 && LWIP_IPV6_MLD
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+static err_t mld_mac_filter( struct netif *netif, const ip6_addr_t *ip6_addr, u8_t action )
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+{
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+ uint8_t mac[6];
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+ const uint8_t *p = (const uint8_t *)&ip6_addr->addr[3];
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+ struct rt_stm32_eth *stm32_eth = (struct rt_stm32_eth *)netif->state;
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+
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+ mac[0] = 0x33;
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+ mac[1] = 0x33;
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+ mac[2] = *(p+0);
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+ mac[3] = *(p+1);
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+ mac[4] = *(p+2);
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+ mac[5] = *(p+3);
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+
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+ register_multicast_address(stm32_eth, mac);
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+
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+ if(1)
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+ {
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+ rt_kprintf("%s %s %s ", __FUNCTION__, (action==NETIF_ADD_MAC_FILTER)?"add":"del", ip6addr_ntoa(ip6_addr));
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+ rt_kprintf("%02X:%02X:%02X:%02X:%02X:%02X\n", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
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+ }
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+
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+ return 0;
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+}
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+#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */
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+
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/* initialize the interface */
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static rt_err_t rt_stm32_eth_init(rt_device_t dev)
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{
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vu32 Value = 0;
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+ struct rt_stm32_eth * stm32_eth = (struct rt_stm32_eth *)dev;
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/* Reset ETHERNET on AHB Bus */
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ETH_DeInit();
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@@ -3112,7 +3223,9 @@ static rt_err_t rt_stm32_eth_init(rt_device_t dev)
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ETH_InitStructure.ETH_ReceiveAll = ETH_ReceiveAll_Enable;
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ETH_InitStructure.ETH_BroadcastFramesReception = ETH_BroadcastFramesReception_Disable;
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ETH_InitStructure.ETH_PromiscuousMode = ETH_PromiscuousMode_Disable;
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- ETH_InitStructure.ETH_MulticastFramesFilter = ETH_MulticastFramesFilter_Perfect;
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+ ETH_InitStructure.ETH_MulticastFramesFilter = ETH_MulticastFramesFilter_HashTable;
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+ ETH_InitStructure.ETH_HashTableHigh = stm32_eth->ETH_HashTableHigh;
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+ ETH_InitStructure.ETH_HashTableLow = stm32_eth->ETH_HashTableLow;
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ETH_InitStructure.ETH_UnicastFramesFilter = ETH_UnicastFramesFilter_Perfect;
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#if CHECKSUM_BY_HARDWARE
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ETH_InitStructure.ETH_ChecksumOffload = ETH_ChecksumOffload_Enable;
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@@ -3153,6 +3266,14 @@ static rt_err_t rt_stm32_eth_init(rt_device_t dev)
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/* Enable MAC and DMA transmission and reception */
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ETH_Start();
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+#if LWIP_IPV4 && LWIP_IGMP
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+ netif_set_igmp_mac_filter(stm32_eth->parent.netif, igmp_mac_filter);
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+#endif /* LWIP_IPV4 && LWIP_IGMP */
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+
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+#if LWIP_IPV6 && LWIP_IPV6_MLD
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+ netif_set_mld_mac_filter(stm32_eth->parent.netif, mld_mac_filter);
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+#endif /* LWIP_IPV6 && LWIP_IPV6_MLD */
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+
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return RT_EOK;
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}
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aozima