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| 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/ethtool | |
| parent | 78be9217c4014cebac4d549cc2db1f2886d5a8fb (diff) | |
| download | linux-dcf0cd1cc58b8e88793ad6531db9b3a47324ca09.tar.gz linux-dcf0cd1cc58b8e88793ad6531db9b3a47324ca09.tar.bz2 linux-dcf0cd1cc58b8e88793ad6531db9b3a47324ca09.zip | |
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/ethtool')
| -rw-r--r-- | net/ethtool/common.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/ethtool/common.c b/net/ethtool/common.c index 835b9bba3e7e..c6a383dfd6c2 100644 --- a/net/ethtool/common.c +++ b/net/ethtool/common.c @@ -69,6 +69,10 @@ const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = { [NETIF_F_GRO_FRAGLIST_BIT] = "rx-gro-list", [NETIF_F_HW_MACSEC_BIT] = "macsec-hw-offload", [NETIF_F_GRO_UDP_FWD_BIT] = "rx-udp-gro-forwarding", + [NETIF_F_HW_HSR_TAG_INS_BIT] = "hsr-tag-ins-offload", + [NETIF_F_HW_HSR_TAG_RM_BIT] = "hsr-tag-rm-offload", + [NETIF_F_HW_HSR_FWD_BIT] = "hsr-fwd-offload", + [NETIF_F_HW_HSR_DUP_BIT] = "hsr-dup-offload", }; const char |