/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ /* Copyright (C) 2015-2019 Netronome Systems, Inc. */ #ifndef _NFP_DP_NFD3_H_ #define _NFP_DP_NFD3_H_ struct sk_buff; struct net_device; /* TX descriptor format */ #define NFD3_DESC_TX_EOP … #define NFD3_DESC_TX_OFFSET_MASK … #define NFD3_DESC_TX_MSS_MASK … /* Flags in the host TX descriptor */ #define NFD3_DESC_TX_CSUM … #define NFD3_DESC_TX_IP4_CSUM … #define NFD3_DESC_TX_TCP_CSUM … #define NFD3_DESC_TX_UDP_CSUM … #define NFD3_DESC_TX_VLAN … #define NFD3_DESC_TX_LSO … #define NFD3_DESC_TX_ENCAP … #define NFD3_DESC_TX_O_IP4_CSUM … struct nfp_nfd3_tx_desc { … }; /** * struct nfp_nfd3_tx_buf - software TX buffer descriptor * @skb: normal ring, sk_buff associated with this buffer * @frag: XDP ring, page frag associated with this buffer * @xdp: XSK buffer pool handle (for AF_XDP) * @dma_addr: DMA mapping address of the buffer * @fidx: Fragment index (-1 for the head and [0..nr_frags-1] for frags) * @pkt_cnt: Number of packets to be produced out of the skb associated * with this buffer (valid only on the head's buffer). * Will be 1 for all non-TSO packets. * @is_xsk_tx: Flag if buffer is a RX buffer after a XDP_TX action and not a * buffer from the TX queue (for AF_XDP). * @real_len: Number of bytes which to be produced out of the skb (valid only * on the head's buffer). Equal to skb->len for non-TSO packets. */ struct nfp_nfd3_tx_buf { … }; void nfp_nfd3_rx_csum(const struct nfp_net_dp *dp, struct nfp_net_r_vector *r_vec, const struct nfp_net_rx_desc *rxd, const struct nfp_meta_parsed *meta, struct sk_buff *skb); bool nfp_nfd3_parse_meta(struct net_device *netdev, struct nfp_meta_parsed *meta, void *data, void *pkt, unsigned int pkt_len, int meta_len); void nfp_nfd3_tx_complete(struct nfp_net_tx_ring *tx_ring, int budget); int nfp_nfd3_poll(struct napi_struct *napi, int budget); netdev_tx_t nfp_nfd3_tx(struct sk_buff *skb, struct net_device *netdev); bool nfp_nfd3_ctrl_tx_one(struct nfp_net *nn, struct nfp_net_r_vector *r_vec, struct sk_buff *skb, bool old); void nfp_nfd3_ctrl_poll(struct tasklet_struct *t); void nfp_nfd3_rx_ring_fill_freelist(struct nfp_net_dp *dp, struct nfp_net_rx_ring *rx_ring); void nfp_nfd3_xsk_tx_free(struct nfp_nfd3_tx_buf *txbuf); int nfp_nfd3_xsk_poll(struct napi_struct *napi, int budget); #ifndef CONFIG_NFP_NET_IPSEC static inline void nfp_nfd3_ipsec_tx(struct nfp_nfd3_tx_desc *txd, struct sk_buff *skb) { } #else void nfp_nfd3_ipsec_tx(struct nfp_nfd3_tx_desc *txd, struct sk_buff *skb); #endif #endif
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