xsk: add sock_diag interface for AF_XDP

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This patch adds the sock_diag interface for querying sockets from user
space. Tools like iproute2 ss(8) can use this interface to list open
AF_XDP sockets.

The user-space ABI is defined in linux/xdp_diag.h and includes netlink
request and response structs. The request can query sockets and the
response contains socket information about the rings, umems, inode and
more.

Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

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Björn Töpel 2019-01-24 19:59:39 +01:00 • committed by Daniel Borkmann

parent 50e74c0131

commit a36b38aa2a

6 changed files with 285 additions and 5 deletions

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72

include/uapi/linux/xdp_diag.h

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8

net/xdp/Kconfig

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1

net/xdp/Makefile

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6

net/xdp/xsk.c

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12

net/xdp/xsk.h

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191

net/xdp/xsk_diag.c

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