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authorKevin Laatz <kevin.laatz@intel.com>2019-08-27 02:25:27 +0000
committerDaniel Borkmann <daniel@iogearbox.net>2019-08-31 01:08:26 +0200
commit10d30e301732636d93d7dcd2e0e6cd34d0454509 (patch)
treea24726ccbccd1988bfe36129545b459acd03d07c /tools/include/uapi
parent282c0c798f8ec883c2ac2f1ce2dc06ef9421731c (diff)
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 'tools/include/uapi')
-rw-r--r--tools/include/uapi/linux/if_xdp.h9
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;