Re: [PATCH net-next v9 4/5] net: devmem: document NETDEV_A_DMABUF_AUTORELEASE netlink attribute

On Fri, Jan 9, 2026 at 6:19 PM Bobby Eshleman bobbyeshleman@gmail.com wrote:

From: Bobby Eshleman bobbyeshleman@meta.com

Update devmem.rst documentation to describe the autorelease netlink attribute used during RX dmabuf binding.

The autorelease attribute is specified at bind-time via the netlink API (NETDEV_CMD_BIND_RX) and controls what happens to outstanding tokens when the socket closes.

Document the two token release modes (automatic vs manual), how to configure the binding for autorelease, the perf benefits, new caveats and restrictions, and the way the mode is enforced system-wide.

Signed-off-by: Bobby Eshleman bobbyeshleman@meta.com

Reviewed-by: Mina Almasry almasrymina@google.com