projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| dac09149 BT |
1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| 2 | /* | |
| c0c77d8f BT |
3 | * if_xdp: XDP socket user-space interface |
| 4 | * Copyright(c) 2018 Intel Corporation. | |
| 5 | * | |
| c0c77d8f BT |
6 | * Author(s): Björn Töpel <bjorn.topel@intel.com> |
| 7 | * Magnus Karlsson <magnus.karlsson@intel.com> | |
| 8 | */ | |
| 9 | ||
| 10 | #ifndef _LINUX_IF_XDP_H | |
| 11 | #define _LINUX_IF_XDP_H | |
| 12 | ||
| 13 | #include <linux/types.h> | |
| 14 | ||
| 965a9909 | 15 | /* Options for the sxdp_flags field */ |
| 173d3adb BT |
16 | #define XDP_SHARED_UMEM (1 << 0) |
| 17 | #define XDP_COPY (1 << 1) /* Force copy-mode */ | |
| 18 | #define XDP_ZEROCOPY (1 << 2) /* Force zero-copy mode */ | |
| 965a9909 MK |
19 | |
| 20 | struct sockaddr_xdp { | |
| 21 | __u16 sxdp_family; | |
| ad75646c | 22 | __u16 sxdp_flags; |
| 965a9909 MK |
23 | __u32 sxdp_ifindex; |
| 24 | __u32 sxdp_queue_id; | |
| 25 | __u32 sxdp_shared_umem_fd; | |
| 965a9909 MK |
26 | }; |
| 27 | ||
| b3a9e0be BT |
28 | struct xdp_ring_offset { |
| 29 | __u64 producer; | |
| 30 | __u64 consumer; | |
| 31 | __u64 desc; | |
| 32 | }; | |
| 33 | ||
| 34 | struct xdp_mmap_offsets { | |
| 35 | struct xdp_ring_offset rx; | |
| 36 | struct xdp_ring_offset tx; | |
| 37 | struct xdp_ring_offset fr; /* Fill */ | |
| 38 | struct xdp_ring_offset cr; /* Completion */ | |
| 39 | }; | |
| 40 | ||
| c0c77d8f | 41 | /* XDP socket options */ |
| b3a9e0be BT |
42 | #define XDP_MMAP_OFFSETS 1 |
| 43 | #define XDP_RX_RING 2 | |
| 44 | #define XDP_TX_RING 3 | |
| 45 | #define XDP_UMEM_REG 4 | |
| 46 | #define XDP_UMEM_FILL_RING 5 | |
| 47 | #define XDP_UMEM_COMPLETION_RING 6 | |
| 48 | #define XDP_STATISTICS 7 | |
| 2640d3c8 | 49 | #define XDP_OPTIONS 8 |
| c0c77d8f BT |
50 | |
| 51 | struct xdp_umem_reg { | |
| 52 | __u64 addr; /* Start of packet data area */ | |
| 53 | __u64 len; /* Length of packet data area */ | |
| bbff2f32 BT |
54 | __u32 chunk_size; |
| 55 | __u32 headroom; | |
| c0c77d8f BT |
56 | }; |
| 57 | ||
| af75d9e0 MK |
58 | struct xdp_statistics { |
| 59 | __u64 rx_dropped; /* Dropped for reasons other than invalid desc */ | |
| 60 | __u64 rx_invalid_descs; /* Dropped due to invalid descriptor */ | |
| 61 | __u64 tx_invalid_descs; /* Dropped due to invalid descriptor */ | |
| 62 | }; | |
| 63 | ||
| 2640d3c8 MM |
64 | struct xdp_options { |
| 65 | __u32 flags; | |
| 66 | }; | |
| 67 | ||
| 68 | /* Flags for the flags field of struct xdp_options */ | |
| 69 | #define XDP_OPTIONS_ZEROCOPY (1 << 0) | |
| 70 | ||
| 423f3832 | 71 | /* Pgoff for mmaping the rings */ |
| b9b6b68e | 72 | #define XDP_PGOFF_RX_RING 0 |
| f6145903 | 73 | #define XDP_PGOFF_TX_RING 0x80000000 |
| a5a16e43 GU |
74 | #define XDP_UMEM_PGOFF_FILL_RING 0x100000000ULL |
| 75 | #define XDP_UMEM_PGOFF_COMPLETION_RING 0x180000000ULL | |
| 423f3832 | 76 | |
| b3a9e0be | 77 | /* Rx/Tx descriptor */ |
| b9b6b68e | 78 | struct xdp_desc { |
| bbff2f32 | 79 | __u64 addr; |
| b9b6b68e | 80 | __u32 len; |
| bbff2f32 | 81 | __u32 options; |
| b9b6b68e BT |
82 | }; |
| 83 | ||
| bbff2f32 | 84 | /* UMEM descriptor is __u64 */ |
| 423f3832 | 85 | |
| c0c77d8f | 86 | #endif /* _LINUX_IF_XDP_H */ |