diff options
| author | George McCollister <george.mccollister@gmail.com> | 2021-07-08 21:06:57 +0530 |
|---|---|---|
| committer | Vignesh Raghavendra <vigneshr@ti.com> | 2021-07-09 16:07:21 +0530 |
| commit | 47c70d67629c54836e2a1831ce966bcf0593ad55 (patch) | |
| tree | 706fe5075592438f7437046f43217d5949aa44e8 /include/linux/netdev_features.h | |
| parent | d2af4660bc465c6d0bfd970467ba8c89089e7015 (diff) | |
net: hsr: add offloading support
commit dcf0cd1cc58b8e88793ad6531db9b3a47324ca09 upstream.
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>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Diffstat (limited to 'include/linux/netdev_features.h')
| -rw-r--r-- | include/linux/netdev_features.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h index 0b17c4322b09..5254738e1b41 100644 --- a/include/linux/netdev_features.h +++ b/include/linux/netdev_features.h @@ -85,6 +85,11 @@ enum { NETIF_F_HW_MACSEC_BIT, /* Offload MACsec operations */ + NETIF_F_HW_HSR_TAG_INS_BIT, /* Offload HSR tag insertion */ + NETIF_F_HW_HSR_TAG_RM_BIT, /* Offload HSR tag removal */ + NETIF_F_HW_HSR_FWD_BIT, /* Offload HSR forwarding */ + NETIF_F_HW_HSR_DUP_BIT, /* Offload HSR duplication */ + /* * Add your fresh new feature above and remember to update * netdev_features_strings[] in net/core/ethtool.c and maybe @@ -157,6 +162,10 @@ enum { #define NETIF_F_GRO_FRAGLIST __NETIF_F(GRO_FRAGLIST) #define NETIF_F_GSO_FRAGLIST __NETIF_F(GSO_FRAGLIST) #define NETIF_F_HW_MACSEC __NETIF_F(HW_MACSEC) +#define NETIF_F_HW_HSR_TAG_INS __NETIF_F(HW_HSR_TAG_INS) +#define NETIF_F_HW_HSR_TAG_RM __NETIF_F(HW_HSR_TAG_RM) +#define NETIF_F_HW_HSR_FWD __NETIF_F(HW_HSR_FWD) +#define NETIF_F_HW_HSR_DUP __NETIF_F(HW_HSR_DUP) /* Finds the next feature with the highest number of the range of start till 0. */ |