diff options
| author |   Magnus Karlsson <magnus.karlsson@intel.com> | 2018-05-02 13:01:32 +0200 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2018-05-03 15:55:24 -0700 |
| commit | f61459030ec7fffdaa3c462cc0f728eef11b4d05 (patch) | |
| tree | af95ebd390dd699a4e21c8e33dbe7b5f5a77ceab /include | |
| parent | xsk: add umem completion queue support and mmap (diff) | |
| download | linux-dev-f61459030ec7fffdaa3c462cc0f728eef11b4d05.tar.xz linux-dev-f61459030ec7fffdaa3c462cc0f728eef11b4d05.zip | |
xsk: add Tx queue setup and mmap support
Another setsockopt (XDP_TX_QUEUE) is added to let the process allocate
a queue, where the user process can pass frames to be transmitted by
the kernel.
The mmapping of the queue is done using the XDP_PGOFF_TX_QUEUE offset.
Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/xdp_sock.h | 1 | ||||
| -rw-r--r-- | include/uapi/linux/if_xdp.h | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/include/net/xdp_sock.h b/include/net/xdp_sock.h index ce3a2ab16b8f..185f4928fbda 100644 --- a/include/net/xdp_sock.h +++ b/include/net/xdp_sock.h @@ -30,6 +30,7 @@ struct xdp_sock { struct xdp_umem *umem; struct list_head flush_node; u16 queue_id; + struct xsk_queue *tx ____cacheline_aligned_in_smp; /* Protects multiple processes in the control path */ struct mutex mutex; u64 rx_dropped; diff --git a/include/uapi/linux/if_xdp.h b/include/uapi/linux/if_xdp.h index 71581a139f26..e2ea878d025c 100644 --- a/include/uapi/linux/if_xdp.h +++ b/include/uapi/linux/if_xdp.h @@ -34,6 +34,7 @@ struct sockaddr_xdp { /* XDP socket options */ #define XDP_RX_RING 1 +#define XDP_TX_RING 2 #define XDP_UMEM_REG 3 #define XDP_UMEM_FILL_RING 4 #define XDP_UMEM_COMPLETION_RING 5 @@ -47,6 +48,7 @@ struct xdp_umem_reg { /* Pgoff for mmaping the rings */ #define XDP_PGOFF_RX_RING 0 +#define XDP_PGOFF_TX_RING 0x80000000 #define XDP_UMEM_PGOFF_FILL_RING 0x100000000 #define XDP_UMEM_PGOFF_COMPLETION_RING 0x180000000 |