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| author |   Björn Töpel <bjorn.topel@intel.com> | 2018-08-28 14:44:32 +0200 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2018-08-29 12:25:53 -0700 |
| commit | 0a714186d3c0f7c563a03537f98716457c1f5ae0 (patch) | |
| tree | 88e7c8fa045cce01f5b5c4b7aa69ca0ed090aa87 /drivers/net/ethernet/intel/i40e/i40e_xsk.h | |
| parent | i40e: move common Rx functions to i40e_txrx_common.h (diff) | |
| download | linux-dev-0a714186d3c0f7c563a03537f98716457c1f5ae0.tar.xz linux-dev-0a714186d3c0f7c563a03537f98716457c1f5ae0.zip | |
i40e: add AF_XDP zero-copy Rx support
This patch adds zero-copy Rx support for AF_XDP sockets. Instead of
allocating buffers of type MEM_TYPE_PAGE_SHARED, the Rx frames are
allocated as MEM_TYPE_ZERO_COPY when AF_XDP is enabled for a certain
queue.
All AF_XDP specific functions are added to a new file, i40e_xsk.c.
Note that when AF_XDP zero-copy is enabled, the XDP action XDP_PASS
will allocate a new buffer and copy the zero-copy frame prior passing
it to the kernel stack.
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_xsk.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.h b/drivers/net/ethernet/intel/i40e/i40e_xsk.h new file mode 100644 index 000000000000..427a844f78a7 --- /dev/null +++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright(c) 2018 Intel Corporation. */ + +#ifndef _I40E_XSK_H_ +#define _I40E_XSK_H_ + +struct i40e_vsi; +struct xdp_umem; +struct zero_copy_allocator; + +int i40e_queue_pair_disable(struct i40e_vsi *vsi, int queue_pair); +int i40e_queue_pair_enable(struct i40e_vsi *vsi, int queue_pair); +int i40e_xsk_umem_query(struct i40e_vsi *vsi, struct xdp_umem **umem, + u16 qid); +int i40e_xsk_umem_setup(struct i40e_vsi *vsi, struct xdp_umem *umem, + u16 qid); +void i40e_zca_free(struct zero_copy_allocator *alloc, unsigned long handle); +bool i40e_alloc_rx_buffers_zc(struct i40e_ring *rx_ring, u16 cleaned_count); +int i40e_clean_rx_irq_zc(struct i40e_ring *rx_ring, int budget); + +#endif /* _I40E_XSK_H_ */ |