Switch module

1. A switching module comprising:

an intra-vehicular network fabric interface for interface to an intra-vehicular network fabric contained within a vehicle;

a switching circuit communicatively coupled to a plurality of local intra-vehicular network ports;

memory configured to store intra-vehicular network information, the intra-vehicular network information including packet content type information and intra-vehicular network topology information;

a first bypass module configured to receive and transmit packets via the intra-vehicular network fabric interface;

a second bypass module configured to receive and transmit packets via one of the plurality of intra-vehicular network ports;

a processing module coupled to the memory, the intra-vehicular network fabric interface and the switching circuit, the processing module to:

determine a priority of a received packet based, at least in part, on the packet content type information;

determine a selected switching protocol based, at least in part, on the intra-vehicular network topology information; and

process the received packet based on the priority of the received packet and the selected switching protocol, including:

identifying top-priority packets based on packet content; and

controlling delivery of top-priority packets between the first bypass module and the second bypass module.

2. The switching module of claim 1 , further comprising:

a packet buffer coupled to the processing module and at least one of a local intra-vehicular network port and the intra-vehicular network fabric interface; and

the processing module configured to manage the packet buffer based, at least in part, on the intra-vehicular network information.

3. The switching module of claim 2 , further comprising:

a plurality of packet queues; and

the processing module configured to place packets in the plurality of packet queues based, at least in part, on a priority of the packets.

4. The switching module of claim 3 , further comprising the processing module configured to:

timestamp packets prior to placing the packets in the plurality of packet queues;

determine, based on the timestamp, if a selected packet has expired;

in response to determining that the selected packet is unexpired, retrieve the selected packet from the plurality of packet queues; and

in response to determining that the selected packet is expired, discard the selected packet.

5. The switching module of claim 1 , wherein the processing module is further configured to interrupt transmission of another packet being currently transmitted.

6. The switching module of claim 1 , wherein the processing module is further configured to route non top-priority packets based on the intra-vehicular network information.

7. The switching module of claim 1 , the processing module further configured to provide intra-vehicular network management services to a local intra-vehicular network, the local intra-vehicular network comprising a plurality of modules coupled to the plurality of local intra-vehicular network ports.

8. The switching module of claim 1 , wherein the selected switching protocol is selected from the group consisting of: a layer 2 switching protocol, a layer 3 switching protocol, a layer 4 switching protocol, and a multi-layer switching protocol.

9. The switching module of claim 1 , wherein the intra-vehicular network fabric comprises at least one Ethernet network.

10. A switching module to be incorporated into a closed intra-vehicular network fabric, the switching module comprising:

a plurality of intra-vehicular network fabric interfaces configured to be coupled to other elements of the closed intra-vehicular network fabric;

selection circuitry configured to select among the plurality of intra-vehicular network fabric interfaces;

a switching circuit coupled to a plurality of local intra-vehicular network ports;

a first bypass module configured to receive and transmit packets via at least some of the plurality of intra-vehicular network fabric interfaces;

a second bypass module configured to receive and transmit packets via at least one of the plurality of local intra-vehicular network ports;

memory configured to store intra-vehicular network information, the intra-vehicular network information including packet content type information and intra-vehicular network topology information;

a processing module coupled to the memory, selection circuitry, the plurality of intra-vehicular network fabric interfaces and the switching circuit, the processing module configured to:

determine a priority of a received packet based, at least in part, on the packet content type information;

determine a selected switching protocol based, at least in part, on the intra-vehicular network topology information; and

process the received packet based on the priority of the received packet and the selected switching protocol, including:

identifying top-priority packets based on packet content; and

controlling delivery of top-priority packets between the first bypass module and the second bypass module.

11. The switching module of claim 10 , further comprising the plurality of intra-vehicular network fabric interfaces having a wired intra-vehicular network fabric interface and a wireless intra-vehicular network fabric interface.

12. The switching module of claim 11 , the selection circuitry further configured to:

select between multiple different modes of operation under control of the processing module, the multiple different modes of operation selected from the group consisting of: a mode in which the switching module receives packets exclusively from the wireless intra-vehicular network fabric interface; a mode in which the switching module receives packets exclusively from the wired intra-vehicular network fabric interface; a mode in which the switching module receives redundant packets from both the wired and wireless intra-vehicular network fabric interfaces; and a mode in which the switching module receives non-redundant packets from both the wired and wireless intra-vehicular network fabric interfaces.

13. The switching module of claim 10 , further comprising:

a packet buffer coupled to the processing module and the plurality of local intra-vehicular network ports; and

the processing module further configured to manage the packet buffer based, at least in part, on the intra-vehicular network information.

14. The switching module of claim 10 , further comprising the processing module configured to provide intra-vehicular network management services to a local intra-vehicular network comprising a plurality of modules coupled to the plurality of local intra-vehicular network ports.

15. A method comprising:

receiving a packet from a intra-vehicular network;

determining a priority of the packet based, at least in part, on packet content type information;

determining a selected switching protocol based, at least in part, on intra-vehicular network topology information; and

processing the packet based on the priority of the packet and the selected switching protocol, including:

determining if the priority of the packet satisfies a top-priority threshold;

in response to determining that the priority of the packet satisfies a top-priority threshold:

bypassing non-priority processing of the packet;

transmitting the packet substantially immediately to one of the intra-vehicular network fabric and a local intra-vehicular network node; and

in response to determining that the priority of the packet fails to satisfy a top-priority threshold:

time stamping the packet to establish a packet time-to-live;

adding the packet to a queue; and

processing the packet in priority order, subject to the packet time-to-live.

16. The method of claim 15 , wherein the transmitting the packet substantially immediately comprises:

comparing a priority of an in-process packet currently being transmitted with the priority of the packet; and

interrupting transmission of the in-process packet in response to the priority of the packet exceeding the priority of the in-process packet.

17. The method of claim 15 , wherein the transmitting the packet substantially immediately comprises in response to the priority of the packet failing to exceed the priority of the in-process packet, delaying transmission of the packet until the in-process packet has been transmitted.

18. The method of claim 15 , further comprising:

comparing contents of the packet to intra-vehicular network information, the intra-vehicular network information including packet content type information and intra-vehicular network topology information; and

routing the packet based on the intra-vehicular network information.

19. The method claim 15 , further comprising:

providing intra-vehicular network management services to a local intra-vehicular network coupled to a plurality of local intra-vehicular network ports of a switch module incorporated into the vehicular intra-vehicular network.

20. The method of claim 15 , wherein intra-vehicular network fabric communications are serviced consistent with at least one Ethernet protocol.