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arch/arm/src/lpc54xx: Resolves some design issues with multicast address filtering and also with AVBTP multi-channel operation (the latter design is still incomplete).

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This commit is contained in:
Gregory Nutt
2017-12-30 17:19:37 -06:00
parent f23fb9dd14
commit 13b5d4de96
4 changed files with 304 additions and 143 deletions
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include/nuttx/net/ethernet.h
+35 -4
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@@ -57,13 +57,28 @@
/* Recognized values of the type bytes in the Ethernet header */
#define ETHTYPE_ARP 0x0806 /* Address resolution protocol */
#define ETHTYPE_IP 0x0800 /* IP protocol */
#define ETHTYPE_IP6 0x86dd /* IP protocol version 6 */
#define ETHTYPE_ARP 0x0806 /* Address resolution protocol */
#define ETHTYPE_IP 0x0800 /* IP protocol */
#define ETHTYPE_IP6 0x86dd /* IP protocol version 6 */
/* Tag protocol identifier (TPID) of 0x8100 identifies the frame as an
* IEEE 802.1Q-tagged frame. This field is located at the same position as
* the Ethernet type field in untagged frames and is thus used to
* distinguish the frame from untagged frames.
*/
#define TPID_8021QVLAN 0x8100
/* These are some of the types then associated with withe QVLAN tagged
* Ethernet packets.
*/
#define ETHTYPE_AVBTP 0x22f0 /* Audio/Video bridging type */
/* Size of the Ethernet header */
#define ETH_HDRLEN 14 /* Minimum size: 2*6 + 2 */
#define ETH_HDRLEN 14 /* Minimum size: 2*6 + 2 */
#define ETH_8021Q_HDRLEN 18 /* Minimum size: 2*6 + 4 + 2 */
/****************************************************************************
* Public Types
@@ -81,6 +96,22 @@ struct eth_hdr_s
uint16_t type; /* Type code (2 bytes) */
};
/* IEEE 802.1Q adds a 32-bit field between the source MAC address and the
* type fields of the original Ethernet header. Two bytes are used for the
* tag protocol identifier (TPID), the other two bytes for tag control
* information TCI). The TCI field is further divided into PCP, DEI, and
* VID.
*/
struct eth_8021qhdr_s
{
uint8_t dest[6]; /* Ethernet destination address (6 bytes) */
uint8_t src[6]; /* Ethernet source address (6 bytes) */
uint16_t tpid; /* TCI: Tag protocol identifier (2 bytes) */
uint16_t tci; /* TCI: Tag control information: PCP, DEI, VID (2 bytes) */
uint16_t type; /* Type code (2 bytes) */
};
/****************************************************************************
* Public Data
****************************************************************************/