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| author |   Kevin Laatz <kevin.laatz@intel.com> | 2019-08-27 02:25:27 +0000 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2019-08-31 01:08:26 +0200 |
| commit | 10d30e301732636d93d7dcd2e0e6cd34d0454509 (patch) | |
| tree | a24726ccbccd1988bfe36129545b459acd03d07c /tools/include/uapi/linux/if_xdp.h | |
| parent | net/mlx5e: Allow XSK frames smaller than a page (diff) | |
| download | linux-dev-10d30e301732636d93d7dcd2e0e6cd34d0454509.tar.xz linux-dev-10d30e301732636d93d7dcd2e0e6cd34d0454509.zip | |
libbpf: add flags to umem config
This patch adds a 'flags' field to the umem_config and umem_reg structs.
This will allow for more options to be added for configuring umems.
The first use for the flags field is to add a flag for unaligned chunks
mode. These flags can either be user-provided or filled with a default.
Since we change the size of the xsk_umem_config struct, we need to version
the ABI. This patch includes the ABI versioning for xsk_umem__create. The
Makefile was also updated to handle multiple function versions in
check-abi.
Signed-off-by: Kevin Laatz <kevin.laatz@intel.com>
Signed-off-by: Ciara Loftus <ciara.loftus@intel.com>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to '')
| -rw-r--r-- | tools/include/uapi/linux/if_xdp.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tools/include/uapi/linux/if_xdp.h b/tools/include/uapi/linux/if_xdp.h index 62b80d57b72a..be328c59389d 100644 --- a/tools/include/uapi/linux/if_xdp.h +++ b/tools/include/uapi/linux/if_xdp.h @@ -26,6 +26,9 @@ */ #define XDP_USE_NEED_WAKEUP (1 << 3) +/* Flags for xsk_umem_config flags */ +#define XDP_UMEM_UNALIGNED_CHUNK_FLAG (1 << 0) + struct sockaddr_xdp { __u16 sxdp_family; __u16 sxdp_flags; @@ -66,6 +69,7 @@ struct xdp_umem_reg { __u64 len; /* Length of packet data area */ __u32 chunk_size; __u32 headroom; + __u32 flags; }; struct xdp_statistics { @@ -87,6 +91,11 @@ struct xdp_options { #define XDP_UMEM_PGOFF_FILL_RING 0x100000000ULL #define XDP_UMEM_PGOFF_COMPLETION_RING 0x180000000ULL +/* Masks for unaligned chunks mode */ +#define XSK_UNALIGNED_BUF_OFFSET_SHIFT 48 +#define XSK_UNALIGNED_BUF_ADDR_MASK \ + ((1ULL << XSK_UNALIGNED_BUF_OFFSET_SHIFT) - 1) + /* Rx/Tx descriptor */ struct xdp_desc { __u64 addr; |