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fc9df2a0b5
Add support for receiving packets via AF_XDP zero-copy mechanism. Add a new flag to 'enum igc_ring_flags_t' to indicate the ring has AF_XDP zero-copy enabled so proper ring setup is carried out during ring configuration in igc_configure_rx_ring(). RX buffers can now be allocated via the shared pages mechanism (default behavior of the driver) or via xsk pool (when AF_XDP zero-copy is enabled) so a union is added to the 'struct igc_rx_buffer' to cover both cases. When AF_XDP zero-copy is enabled, rx buffers are allocated from the xsk pool using the new helper igc_alloc_rx_buffers_zc() which is the counterpart of igc_alloc_rx_buffers(). Likewise other Intel drivers that support AF_XDP zero-copy, in igc we have a dedicated path for cleaning up rx irqs when zero-copy is enabled. This avoids adding too many checks within igc_clean_rx_irq(), resulting in a more readable and efficient code since this function is called from the hot-path of the driver. Signed-off-by: Andre Guedes <andre.guedes@intel.com> Signed-off-by: Vedang Patel <vedang.patel@intel.com> Signed-off-by: Jithu Joseph <jithu.joseph@intel.com> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Tested-by: Dvora Fuxbrumer <dvorax.fuxbrumer@linux.intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
17 lines
470 B
C
17 lines
470 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2020, Intel Corporation. */
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#ifndef _IGC_XDP_H_
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#define _IGC_XDP_H_
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int igc_xdp_set_prog(struct igc_adapter *adapter, struct bpf_prog *prog,
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struct netlink_ext_ack *extack);
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int igc_xdp_setup_pool(struct igc_adapter *adapter, struct xsk_buff_pool *pool,
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u16 queue_id);
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static inline bool igc_xdp_is_enabled(struct igc_adapter *adapter)
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{
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return !!adapter->xdp_prog;
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}
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#endif /* _IGC_XDP_H_ */
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