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편집 파일: qed_ll2_if.h

/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ /* QLogic qed NIC Driver * Copyright (c) 2015-2017 QLogic Corporation * Copyright (c) 2019-2020 Marvell International Ltd. */ #ifndef _QED_LL2_IF_H #define _QED_LL2_IF_H #include <linux/types.h> #include <linux/interrupt.h> #include <linux/netdevice.h> #include <linux/pci.h> #include <linux/skbuff.h> #include <linux/kernel.h> #include <linux/slab.h> #include <linux/qed/qed_if.h> enum qed_ll2_conn_type { QED_LL2_TYPE_FCOE, QED_LL2_TYPE_TCP_ULP, QED_LL2_TYPE_TEST, QED_LL2_TYPE_OOO, QED_LL2_TYPE_RESERVED2, QED_LL2_TYPE_ROCE, QED_LL2_TYPE_IWARP, QED_LL2_TYPE_RESERVED3, MAX_QED_LL2_CONN_TYPE }; enum qed_ll2_rx_conn_type { QED_LL2_RX_TYPE_LEGACY, QED_LL2_RX_TYPE_CTX, MAX_QED_LL2_RX_CONN_TYPE }; enum qed_ll2_roce_flavor_type { QED_LL2_ROCE, QED_LL2_RROCE, MAX_QED_LL2_ROCE_FLAVOR_TYPE }; enum qed_ll2_tx_dest { QED_LL2_TX_DEST_NW, /* Light L2 TX Destination to the Network */ QED_LL2_TX_DEST_LB, /* Light L2 TX Destination to the Loopback */ QED_LL2_TX_DEST_DROP, /* Light L2 Drop the TX packet */ QED_LL2_TX_DEST_MAX }; enum qed_ll2_error_handle { QED_LL2_DROP_PACKET, QED_LL2_DO_NOTHING, QED_LL2_ASSERT, }; struct qed_ll2_stats { u64 gsi_invalid_hdr; u64 gsi_invalid_pkt_length; u64 gsi_unsupported_pkt_typ; u64 gsi_crcchksm_error; u64 packet_too_big_discard; u64 no_buff_discard; u64 rcv_ucast_bytes; u64 rcv_mcast_bytes; u64 rcv_bcast_bytes; u64 rcv_ucast_pkts; u64 rcv_mcast_pkts; u64 rcv_bcast_pkts; u64 sent_ucast_bytes; u64 sent_mcast_bytes; u64 sent_bcast_bytes; u64 sent_ucast_pkts; u64 sent_mcast_pkts; u64 sent_bcast_pkts; }; struct qed_ll2_comp_rx_data { void *cookie; dma_addr_t rx_buf_addr; u16 parse_flags; u16 err_flags; u16 vlan; bool b_last_packet; u8 connection_handle; union { u16 packet_length; u16 data_length; } length; u32 opaque_data_0; u32 opaque_data_1; /* GSI only */ u32 src_qp; u16 qp_id; union { u8 placement_offset; u8 data_length_error; } u; }; typedef void (*qed_ll2_complete_rx_packet_cb)(void *cxt, struct qed_ll2_comp_rx_data *data); typedef void (*qed_ll2_release_rx_packet_cb)(void *cxt, u8 connection_handle, void *cookie, dma_addr_t rx_buf_addr, bool b_last_packet); typedef void (*qed_ll2_complete_tx_packet_cb)(void *cxt, u8 connection_handle, void *cookie, dma_addr_t first_frag_addr, bool b_last_fragment, bool b_last_packet); typedef void (*qed_ll2_release_tx_packet_cb)(void *cxt, u8 connection_handle, void *cookie, dma_addr_t first_frag_addr, bool b_last_fragment, bool b_last_packet); typedef void (*qed_ll2_slowpath_cb)(void *cxt, u8 connection_handle, u32 opaque_data_0, u32 opaque_data_1); struct qed_ll2_cbs { qed_ll2_complete_rx_packet_cb rx_comp_cb; qed_ll2_release_rx_packet_cb rx_release_cb; qed_ll2_complete_tx_packet_cb tx_comp_cb; qed_ll2_release_tx_packet_cb tx_release_cb; qed_ll2_slowpath_cb slowpath_cb; void *cookie; }; struct qed_ll2_acquire_data_inputs { enum qed_ll2_rx_conn_type rx_conn_type; enum qed_ll2_conn_type conn_type; u16 mtu; u16 rx_num_desc; u16 rx_num_ooo_buffers; u8 rx_drop_ttl0_flg; u8 rx_vlan_removal_en; u16 tx_num_desc; u8 tx_max_bds_per_packet; u8 tx_tc; enum qed_ll2_tx_dest tx_dest; enum qed_ll2_error_handle ai_err_packet_too_big; enum qed_ll2_error_handle ai_err_no_buf; bool secondary_queue; u8 gsi_enable; }; struct qed_ll2_acquire_data { struct qed_ll2_acquire_data_inputs input; const struct qed_ll2_cbs *cbs; /* Output container for LL2 connection's handle */ u8 *p_connection_handle; }; struct qed_ll2_tx_pkt_info { void *cookie; dma_addr_t first_frag; enum qed_ll2_tx_dest tx_dest; enum qed_ll2_roce_flavor_type qed_roce_flavor; u16 vlan; u16 l4_hdr_offset_w; /* from start of packet */ u16 first_frag_len; u8 num_of_bds; u8 bd_flags; bool enable_ip_cksum; bool enable_l4_cksum; bool calc_ip_len; bool remove_stag; }; #define QED_LL2_UNUSED_HANDLE (0xff) struct qed_ll2_cb_ops { int (*rx_cb)(void *, struct sk_buff *, u32, u32); int (*tx_cb)(void *, struct sk_buff *, bool); }; struct qed_ll2_params { u16 mtu; bool drop_ttl0_packets; bool rx_vlan_stripping; u8 tx_tc; bool frags_mapped; u8 ll2_mac_address[ETH_ALEN]; }; enum qed_ll2_xmit_flags { /* FIP discovery packet */ QED_LL2_XMIT_FLAGS_FIP_DISCOVERY }; struct qed_ll2_ops { /** * start(): Initializes ll2. * * @cdev: Qed dev pointer. * @params: Protocol driver configuration for the ll2. * * Return: 0 on success, otherwise error value. */ int (*start)(struct qed_dev *cdev, struct qed_ll2_params *params); /** * stop(): Stops the ll2 * * @cdev: Qed dev pointer. * * Return: 0 on success, otherwise error value. */ int (*stop)(struct qed_dev *cdev); /** * start_xmit(): Transmits an skb over the ll2 interface * * @cdev: Qed dev pointer. * @skb: SKB. * @xmit_flags: Transmit options defined by the enum qed_ll2_xmit_flags. * * Return: 0 on success, otherwise error value. */ int (*start_xmit)(struct qed_dev *cdev, struct sk_buff *skb, unsigned long xmit_flags); /** * register_cb_ops(): Protocol driver register the callback for Rx/Tx * packets. Should be called before `start'. * * @cdev: Qed dev pointer. * @cookie: to be passed to the callback functions. * @ops: the callback functions to register for Rx / Tx. * * Return: 0 on success, otherwise error value. */ void (*register_cb_ops)(struct qed_dev *cdev, const struct qed_ll2_cb_ops *ops, void *cookie); /** * get_stats(): Get LL2 related statistics. * * @cdev: Qed dev pointer. * @stats: Pointer to struct that would be filled with stats. * * Return: 0 on success, error otherwise. */ int (*get_stats)(struct qed_dev *cdev, struct qed_ll2_stats *stats); }; #ifdef CONFIG_QED_LL2 int qed_ll2_alloc_if(struct qed_dev *); void qed_ll2_dealloc_if(struct qed_dev *); #else static const struct qed_ll2_ops qed_ll2_ops_pass = { .start = NULL, .stop = NULL, .start_xmit = NULL, .register_cb_ops = NULL, .get_stats = NULL, }; static inline int qed_ll2_alloc_if(struct qed_dev *cdev) { return 0; } static inline void qed_ll2_dealloc_if(struct qed_dev *cdev) { } #endif #endif