diff options
Diffstat (limited to 'drivers/net/ethernet/qlogic/qed/qed_iwarp.h')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_iwarp.h | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.h b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h new file mode 100644 index 000000000..c3872cd94 --- /dev/null +++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.h @@ -0,0 +1,206 @@ +/* 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_IWARP_H +#define _QED_IWARP_H + +enum qed_iwarp_qp_state { + QED_IWARP_QP_STATE_IDLE, + QED_IWARP_QP_STATE_RTS, + QED_IWARP_QP_STATE_TERMINATE, + QED_IWARP_QP_STATE_CLOSING, + QED_IWARP_QP_STATE_ERROR, +}; + +enum qed_iwarp_qp_state qed_roce2iwarp_state(enum qed_roce_qp_state state); + +#define QED_IWARP_PREALLOC_CNT (256) + +#define QED_IWARP_LL2_SYN_TX_SIZE (128) +#define QED_IWARP_LL2_SYN_RX_SIZE (256) + +#define QED_IWARP_LL2_OOO_DEF_TX_SIZE (256) +#define QED_IWARP_MAX_OOO (16) +#define QED_IWARP_LL2_OOO_MAX_RX_SIZE (16384) + +#define QED_IWARP_HANDLE_INVAL (0xff) + +struct qed_iwarp_ll2_buff { + struct qed_iwarp_ll2_buff *piggy_buf; + void *data; + dma_addr_t data_phys_addr; + u32 buff_size; +}; + +struct qed_iwarp_ll2_mpa_buf { + struct list_head list_entry; + struct qed_iwarp_ll2_buff *ll2_buf; + struct unaligned_opaque_data data; + u16 tcp_payload_len; + u8 placement_offset; +}; + +/* In some cases a fpdu will arrive with only one byte of the header, in this + * case the fpdu_length will be partial (contain only higher byte and + * incomplete bytes will contain the invalid value + */ +#define QED_IWARP_INVALID_INCOMPLETE_BYTES 0xffff + +struct qed_iwarp_fpdu { + struct qed_iwarp_ll2_buff *mpa_buf; + void *mpa_frag_virt; + dma_addr_t mpa_frag; + dma_addr_t pkt_hdr; + u16 mpa_frag_len; + u16 fpdu_length; + u16 incomplete_bytes; + u8 pkt_hdr_size; +}; + +struct qed_iwarp_info { + struct list_head listen_list; /* qed_iwarp_listener */ + struct list_head ep_list; /* qed_iwarp_ep */ + struct list_head ep_free_list; /* pre-allocated ep's */ + struct list_head mpa_buf_list; /* list of mpa_bufs */ + struct list_head mpa_buf_pending_list; + spinlock_t iw_lock; /* for iwarp resources */ + spinlock_t qp_lock; /* for teardown races */ + u32 rcv_wnd_scale; + u16 rcv_wnd_size; + u16 max_mtu; + u8 mac_addr[ETH_ALEN]; + u8 crc_needed; + u8 tcp_flags; + u8 ll2_syn_handle; + u8 ll2_ooo_handle; + u8 ll2_mpa_handle; + u8 peer2peer; + enum mpa_negotiation_mode mpa_rev; + enum mpa_rtr_type rtr_type; + struct qed_iwarp_fpdu *partial_fpdus; + struct qed_iwarp_ll2_mpa_buf *mpa_bufs; + u8 *mpa_intermediate_buf; + u16 max_num_partial_fpdus; +}; + +enum qed_iwarp_ep_state { + QED_IWARP_EP_INIT, + QED_IWARP_EP_MPA_REQ_RCVD, + QED_IWARP_EP_MPA_OFFLOADED, + QED_IWARP_EP_ESTABLISHED, + QED_IWARP_EP_CLOSED +}; + +union async_output { + struct iwarp_eqe_data_mpa_async_completion mpa_response; + struct iwarp_eqe_data_tcp_async_completion mpa_request; +}; + +#define QED_MAX_PRIV_DATA_LEN (512) +struct qed_iwarp_ep_memory { + u8 in_pdata[QED_MAX_PRIV_DATA_LEN]; + u8 out_pdata[QED_MAX_PRIV_DATA_LEN]; + union async_output async_output; +}; + +/* Endpoint structure represents a TCP connection. This connection can be + * associated with a QP or not (in which case QP==NULL) + */ +struct qed_iwarp_ep { + struct list_head list_entry; + struct qed_rdma_qp *qp; + struct qed_iwarp_ep_memory *ep_buffer_virt; + dma_addr_t ep_buffer_phys; + enum qed_iwarp_ep_state state; + int sig; + struct qed_iwarp_cm_info cm_info; + enum tcp_connect_mode connect_mode; + enum mpa_rtr_type rtr_type; + enum mpa_negotiation_mode mpa_rev; + u32 tcp_cid; + u32 cid; + u16 mss; + u8 remote_mac_addr[6]; + u8 local_mac_addr[6]; + bool mpa_reply_processed; + + /* For Passive side - syn packet related data */ + u16 syn_ip_payload_length; + struct qed_iwarp_ll2_buff *syn; + dma_addr_t syn_phy_addr; + + /* The event_cb function is called for asynchrounous events associated + * with the ep. It is initialized at different entry points depending + * on whether the ep is the tcp connection active side or passive side + * The cb_context is passed to the event_cb function. + */ + iwarp_event_handler event_cb; + void *cb_context; +}; + +struct qed_iwarp_listener { + struct list_head list_entry; + + /* The event_cb function is called for connection requests. + * The cb_context is passed to the event_cb function. + */ + iwarp_event_handler event_cb; + void *cb_context; + u32 max_backlog; + u32 ip_addr[4]; + u16 port; + u16 vlan; + u8 ip_version; +}; + +int qed_iwarp_alloc(struct qed_hwfn *p_hwfn); + +int qed_iwarp_setup(struct qed_hwfn *p_hwfn, + struct qed_rdma_start_in_params *params); + +void qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn, + struct iwarp_init_func_ramrod_data *p_ramrod); + +int qed_iwarp_stop(struct qed_hwfn *p_hwfn); + +void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn); + +void qed_iwarp_init_devinfo(struct qed_hwfn *p_hwfn); + +void qed_iwarp_init_hw(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt); + +int qed_iwarp_create_qp(struct qed_hwfn *p_hwfn, + struct qed_rdma_qp *qp, + struct qed_rdma_create_qp_out_params *out_params); + +int qed_iwarp_modify_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp, + enum qed_iwarp_qp_state new_state, bool internal); + +int qed_iwarp_destroy_qp(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp); + +int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp); + +void qed_iwarp_query_qp(struct qed_rdma_qp *qp, + struct qed_rdma_query_qp_out_params *out_params); + +int +qed_iwarp_connect(void *rdma_cxt, + struct qed_iwarp_connect_in *iparams, + struct qed_iwarp_connect_out *oparams); + +int +qed_iwarp_create_listen(void *rdma_cxt, + struct qed_iwarp_listen_in *iparams, + struct qed_iwarp_listen_out *oparams); + +int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams); + +int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams); +int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle); + +int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams); + +#endif |