cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / linux / if_xdp.h

diff --git a/i686-linux-gnu-4.7/usr/include/linux/if_xdp.h b/i686-linux-gnu-4.7/usr/include/linux/if_xdp.h
new file mode 100644 (file)
index 0000000..caed8b1
--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/linux/if_xdp.h
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * if_xdp: XDP socket user-space interface
+ * Copyright(c) 2018 Intel Corporation.
+ *
+ * Author(s): Björn Töpel <bjorn.topel@intel.com>
+ *           Magnus Karlsson <magnus.karlsson@intel.com>
+ */
+
+#ifndef _LINUX_IF_XDP_H
+#define _LINUX_IF_XDP_H
+
+#include <linux/types.h>
+
+/* Options for the sxdp_flags field */
+#define XDP_SHARED_UMEM        (1 << 0)
+#define XDP_COPY       (1 << 1) /* Force copy-mode */
+#define XDP_ZEROCOPY   (1 << 2) /* Force zero-copy mode */
+
+struct sockaddr_xdp {
+       __u16 sxdp_family;
+       __u16 sxdp_flags;
+       __u32 sxdp_ifindex;
+       __u32 sxdp_queue_id;
+       __u32 sxdp_shared_umem_fd;
+};
+
+struct xdp_ring_offset {
+       __u64 producer;
+       __u64 consumer;
+       __u64 desc;
+};
+
+struct xdp_mmap_offsets {
+       struct xdp_ring_offset rx;
+       struct xdp_ring_offset tx;
+       struct xdp_ring_offset fr; /* Fill */
+       struct xdp_ring_offset cr; /* Completion */
+};
+
+/* XDP socket options */
+#define XDP_MMAP_OFFSETS               1
+#define XDP_RX_RING                    2
+#define XDP_TX_RING                    3
+#define XDP_UMEM_REG                   4
+#define XDP_UMEM_FILL_RING             5
+#define XDP_UMEM_COMPLETION_RING       6
+#define XDP_STATISTICS                 7
+
+struct xdp_umem_reg {
+       __u64 addr; /* Start of packet data area */
+       __u64 len; /* Length of packet data area */
+       __u32 chunk_size;
+       __u32 headroom;
+};
+
+struct xdp_statistics {
+       __u64 rx_dropped; /* Dropped for reasons other than invalid desc */
+       __u64 rx_invalid_descs; /* Dropped due to invalid descriptor */
+       __u64 tx_invalid_descs; /* Dropped due to invalid descriptor */
+};
+
+/* Pgoff for mmaping the rings */
+#define XDP_PGOFF_RX_RING                        0
+#define XDP_PGOFF_TX_RING               0x80000000
+#define XDP_UMEM_PGOFF_FILL_RING       0x100000000ULL
+#define XDP_UMEM_PGOFF_COMPLETION_RING 0x180000000ULL
+
+/* Rx/Tx descriptor */
+struct xdp_desc {
+       __u64 addr;
+       __u32 len;
+       __u32 options;
+};
+
+/* UMEM descriptor is __u64 */
+
+#endif /* _LINUX_IF_XDP_H */