kernel/linux.git/include/uapi/linux/psp.h, branch v6.18.21

net: psp: add socket security association code

2025-09-18T10:32:06+00:00

Add the ability to install PSP Rx and Tx crypto keys on TCP connections. Netlink ops are provided for both operations. Rx side combines allocating a new Rx key and installing it on the socket. Theoretically these are separate actions, but in practice they will always be used one after the other. We can add distinct "alloc" and "install" ops later. Reviewed-by: Willem de Bruijn Signed-off-by: Jakub Kicinski Co-developed-by: Daniel Zahka Signed-off-by: Daniel Zahka Reviewed-by: Eric Dumazet Link: https://patch.msgid.link/20250917000954.859376-9-daniel.zahka@gmail.com Signed-off-by: Paolo Abeni

psp: add op for rotation of device key

2025-09-18T10:32:06+00:00

Rotating the device key is a key part of the PSP protocol design. Some external daemon needs to do it once a day, or so. Add a netlink op to perform this operation. Add a notification group for informing users that key has been rotated and they should rekey (next rotation will cut them off). Reviewed-by: Willem de Bruijn Signed-off-by: Jakub Kicinski Signed-off-by: Daniel Zahka Reviewed-by: Eric Dumazet Link: https://patch.msgid.link/20250917000954.859376-6-daniel.zahka@gmail.com Signed-off-by: Paolo Abeni

psp: base PSP device support

2025-09-18T10:32:06+00:00

Add a netlink family for PSP and allow drivers to register support. The "PSP device" is its own object. This allows us to perform more flexible reference counting / lifetime control than if PSP information was part of net_device. In the future we should also be able to "delegate" PSP access to software devices, such as *vlan, veth or netkit more easily. Reviewed-by: Willem de Bruijn Signed-off-by: Jakub Kicinski Signed-off-by: Daniel Zahka Reviewed-by: Eric Dumazet Link: https://patch.msgid.link/20250917000954.859376-3-daniel.zahka@gmail.com Signed-off-by: Paolo Abeni