c7dd09fd46
When XSK pool uses need_wakeup feature, correlate -ENOBUFS that was returned from xdp_do_redirect() with a XSK Rx queue being full. In such case, terminate the Rx processing that is being done on the current HW Rx ring and let the user space consume descriptors from XSK Rx queue so that there is room that driver can use later on. Introduce new internal return code IXGBE_XDP_EXIT that will indicate case described above. Note that it does not affect Tx processing that is bound to the same NAPI context, nor the other Rx rings. Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20220413153015.453864-8-maciej.fijalkowski@intel.com
50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright(c) 2018 Intel Corporation. */
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#ifndef _IXGBE_TXRX_COMMON_H_
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#define _IXGBE_TXRX_COMMON_H_
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#define IXGBE_XDP_PASS 0
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#define IXGBE_XDP_CONSUMED BIT(0)
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#define IXGBE_XDP_TX BIT(1)
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#define IXGBE_XDP_REDIR BIT(2)
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#define IXGBE_XDP_EXIT BIT(3)
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#define IXGBE_TXD_CMD (IXGBE_TXD_CMD_EOP | \
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IXGBE_TXD_CMD_RS)
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int ixgbe_xmit_xdp_ring(struct ixgbe_ring *ring,
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struct xdp_frame *xdpf);
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bool ixgbe_cleanup_headers(struct ixgbe_ring *rx_ring,
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union ixgbe_adv_rx_desc *rx_desc,
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struct sk_buff *skb);
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void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring,
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union ixgbe_adv_rx_desc *rx_desc,
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struct sk_buff *skb);
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void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector,
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struct sk_buff *skb);
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void ixgbe_xdp_ring_update_tail(struct ixgbe_ring *ring);
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void ixgbe_xdp_ring_update_tail_locked(struct ixgbe_ring *ring);
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void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter, u64 qmask);
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void ixgbe_txrx_ring_disable(struct ixgbe_adapter *adapter, int ring);
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void ixgbe_txrx_ring_enable(struct ixgbe_adapter *adapter, int ring);
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struct xsk_buff_pool *ixgbe_xsk_pool(struct ixgbe_adapter *adapter,
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struct ixgbe_ring *ring);
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int ixgbe_xsk_pool_setup(struct ixgbe_adapter *adapter,
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struct xsk_buff_pool *pool,
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u16 qid);
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bool ixgbe_alloc_rx_buffers_zc(struct ixgbe_ring *rx_ring, u16 cleaned_count);
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int ixgbe_clean_rx_irq_zc(struct ixgbe_q_vector *q_vector,
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struct ixgbe_ring *rx_ring,
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const int budget);
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void ixgbe_xsk_clean_rx_ring(struct ixgbe_ring *rx_ring);
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bool ixgbe_clean_xdp_tx_irq(struct ixgbe_q_vector *q_vector,
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struct ixgbe_ring *tx_ring, int napi_budget);
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int ixgbe_xsk_wakeup(struct net_device *dev, u32 queue_id, u32 flags);
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void ixgbe_xsk_clean_tx_ring(struct ixgbe_ring *tx_ring);
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#endif /* #define _IXGBE_TXRX_COMMON_H_ */
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