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Add support for offloading of HSR/PRP (IEC 62439-3) tag insertion tag removal, duplicate generation and forwarding. For HSR, insertion involves the switch adding a 6 byte HSR header after the 14 byte Ethernet header. For PRP it adds a 6 byte trailer. Tag removal involves automatically stripping the HSR/PRP header/trailer in the switch. This is possible when the switch also performs auto deduplication using the HSR/PRP header/trailer (making it no longer required). Forwarding involves automatically forwarding between redundant ports in an HSR. This is crucial because delay is accumulated as a frame passes through each node in the ring. Duplication involves the switch automatically sending a single frame from the CPU port to both redundant ports. This is required because the inserted HSR/PRP header/trailer must contain the same sequence number on the frames sent out both redundant ports. Export is_hsr_master so DSA can tell them apart from other devices in dsa_slave_changeupper. Signed-off-by: George McCollister <george.mccollister@gmail.com> Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| .. | ||
| hsr_debugfs.c | ||
| hsr_device.c | ||
| hsr_device.h | ||
| hsr_forward.c | ||
| hsr_forward.h | ||
| hsr_framereg.c | ||
| hsr_framereg.h | ||
| hsr_main.c | ||
| hsr_main.h | ||
| hsr_netlink.c | ||
| hsr_netlink.h | ||
| hsr_slave.c | ||
| hsr_slave.h | ||
| Kconfig | ||
| Makefile | ||