a36b38aa2a
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>
73 lines
1.2 KiB
C
73 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* xdp_diag: interface for query/monitor XDP sockets
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* Copyright(c) 2019 Intel Corporation.
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*/
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#ifndef _LINUX_XDP_DIAG_H
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#define _LINUX_XDP_DIAG_H
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#include <linux/types.h>
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struct xdp_diag_req {
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__u8 sdiag_family;
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__u8 sdiag_protocol;
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__u16 pad;
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__u32 xdiag_ino;
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__u32 xdiag_show;
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__u32 xdiag_cookie[2];
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};
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struct xdp_diag_msg {
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__u8 xdiag_family;
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__u8 xdiag_type;
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__u16 pad;
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__u32 xdiag_ino;
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__u32 xdiag_cookie[2];
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};
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#define XDP_SHOW_INFO (1 << 0) /* Basic information */
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#define XDP_SHOW_RING_CFG (1 << 1)
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#define XDP_SHOW_UMEM (1 << 2)
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#define XDP_SHOW_MEMINFO (1 << 3)
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enum {
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XDP_DIAG_NONE,
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XDP_DIAG_INFO,
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XDP_DIAG_UID,
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XDP_DIAG_RX_RING,
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XDP_DIAG_TX_RING,
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XDP_DIAG_UMEM,
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XDP_DIAG_UMEM_FILL_RING,
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XDP_DIAG_UMEM_COMPLETION_RING,
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XDP_DIAG_MEMINFO,
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__XDP_DIAG_MAX,
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};
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#define XDP_DIAG_MAX (__XDP_DIAG_MAX - 1)
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struct xdp_diag_info {
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__u32 ifindex;
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__u32 queue_id;
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};
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struct xdp_diag_ring {
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__u32 entries; /*num descs */
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};
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#define XDP_DU_F_ZEROCOPY (1 << 0)
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struct xdp_diag_umem {
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__u64 size;
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__u32 id;
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__u32 num_pages;
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__u32 chunk_size;
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__u32 headroom;
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__u32 ifindex;
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__u32 queue_id;
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__u32 flags;
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__u32 refs;
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};
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#endif /* _LINUX_XDP_DIAG_H */
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