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authorGeorge McCollister <george.mccollister@gmail.com>2021-02-10 04:02:11 +0300
committerDavid S. Miller <davem@davemloft.net>2021-02-12 00:24:44 +0300
commitdcf0cd1cc58b8e88793ad6531db9b3a47324ca09 (patch)
tree5ebcc92e853b319a9e8ab015fa01912b4b34a2aa /net/ethtool
parent78be9217c4014cebac4d549cc2db1f2886d5a8fb (diff)
downloadlinux-dcf0cd1cc58b8e88793ad6531db9b3a47324ca09.tar.xz
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.c4
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