diff options
| author | George McCollister <george.mccollister@gmail.com> | 2021-02-09 19:02:11 -0600 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-02-11 13:24:44 -0800 |
| commit | dcf0cd1cc58b8e88793ad6531db9b3a47324ca09 (patch) | |
| tree | 5ebcc92e853b319a9e8ab015fa01912b4b34a2aa /net/hsr/hsr_device.h | |
| parent | 78be9217c4014cebac4d549cc2db1f2886d5a8fb (diff) | |
net: hsr: add offloading support
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>
Diffstat (limited to 'net/hsr/hsr_device.h')
| -rw-r--r-- | net/hsr/hsr_device.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/net/hsr/hsr_device.h b/net/hsr/hsr_device.h index 868373822ee4..9060c92168f9 100644 --- a/net/hsr/hsr_device.h +++ b/net/hsr/hsr_device.h @@ -19,6 +19,5 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2], unsigned char multicast_spec, u8 protocol_version, struct netlink_ext_ack *extack); void hsr_check_carrier_and_operstate(struct hsr_priv *hsr); -bool is_hsr_master(struct net_device *dev); int hsr_get_max_mtu(struct hsr_priv *hsr); #endif /* __HSR_DEVICE_H */ |