/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ /* Authors: Bernard Metzler <[email protected]> */ /* Copyright (c) 2008-2019, IBM Corporation */ #ifndef _SIW_H #define _SIW_H #include <rdma/ib_verbs.h> #include <rdma/restrack.h> #include <linux/socket.h> #include <linux/skbuff.h> #include <crypto/hash.h> #include <linux/crc32.h> #include <linux/crc32c.h> #include <rdma/siw-abi.h> #include "iwarp.h" #define SIW_VENDOR_ID … #define SIW_VENDORT_PART_ID … #define SIW_MAX_QP … #define SIW_MAX_QP_WR … #define SIW_MAX_ORD_QP … #define SIW_MAX_IRD_QP … #define SIW_MAX_SGE_PBL … #define SIW_MAX_SGE_RD … #define SIW_MAX_CQ … #define SIW_MAX_CQE … #define SIW_MAX_MR … #define SIW_MAX_PD … #define SIW_MAX_MW … #define SIW_MAX_SRQ … #define SIW_MAX_SRQ_WR … #define SIW_MAX_CONTEXT … /* Min number of bytes for using zero copy transmit */ #define SENDPAGE_THRESH … /* Maximum number of frames which can be send in one SQ processing */ #define SQ_USER_MAXBURST … /* Maximum number of consecutive IRQ elements which get served * if SQ has pending work. Prevents starving local SQ processing * by serving peer Read Requests. */ #define SIW_IRQ_MAXBURST_SQ_ACTIVE … struct siw_dev_cap { … }; struct siw_pd { … }; struct siw_device { … }; struct siw_ucontext { … }; /* * The RDMA core does not define LOCAL_READ access, which is always * enabled implictely. */ #define IWARP_ACCESS_MASK … /* * siw presentation of user memory registered as source * or target of RDMA operations. */ struct siw_page_chunk { … }; struct siw_umem { … }; struct siw_pble { … }; struct siw_pbl { … }; /* * Generic memory representation for registered siw memory. * Memory lookup always via higher 24 bit of STag (STag index). */ struct siw_mem { … }; struct siw_mr { … }; /* * Error codes for local or remote * access to registered memory */ enum siw_access_state { … }; enum siw_wr_state { … }; /* The WQE currently being processed (RX or TX) */ struct siw_wqe { … }; struct siw_cq { … }; enum siw_qp_state { … }; enum siw_qp_flags { … }; enum siw_qp_attr_mask { … }; struct siw_srq { … }; struct siw_qp_attrs { … }; enum siw_tx_ctx { … }; enum siw_rx_state { … }; struct siw_rx_stream { … }; struct siw_rx_fpdu { … }; /* * Shorthands for short packets w/o payload * to be transmitted more efficient. */ struct siw_send_pkt { … }; struct siw_write_pkt { … }; struct siw_rreq_pkt { … }; struct siw_rresp_pkt { … }; struct siw_iwarp_tx { … }; struct siw_qp { … }; /* helper macros */ #define rx_qp(rx) … #define tx_qp(tx) … #define tx_wqe(qp) … #define rx_wqe(rctx) … #define rx_mem(rctx) … #define tx_type(wqe) … #define rx_type(wqe) … #define tx_flags(wqe) … struct iwarp_msg_info { … }; struct siw_user_mmap_entry { … }; /* Global siw parameters. Currently set in siw_main.c */ extern const bool zcopy_tx; extern const bool try_gso; extern const bool loopback_enabled; extern const bool mpa_crc_required; extern const bool mpa_crc_strict; extern const bool siw_tcp_nagle; extern u_char mpa_version; extern const bool peer_to_peer; extern struct task_struct *siw_tx_thread[]; extern struct crypto_shash *siw_crypto_shash; extern struct iwarp_msg_info iwarp_pktinfo[RDMAP_TERMINATE + 1]; /* QP general functions */ int siw_qp_modify(struct siw_qp *qp, struct siw_qp_attrs *attr, enum siw_qp_attr_mask mask); int siw_qp_mpa_rts(struct siw_qp *qp, enum mpa_v2_ctrl ctrl); void siw_qp_llp_close(struct siw_qp *qp); void siw_qp_cm_drop(struct siw_qp *qp, int schedule); void siw_send_terminate(struct siw_qp *qp); void siw_qp_get_ref(struct ib_qp *qp); void siw_qp_put_ref(struct ib_qp *qp); int siw_qp_add(struct siw_device *sdev, struct siw_qp *qp); void siw_free_qp(struct kref *ref); void siw_init_terminate(struct siw_qp *qp, enum term_elayer layer, u8 etype, u8 ecode, int in_tx); enum ddp_ecode siw_tagged_error(enum siw_access_state state); enum rdmap_ecode siw_rdmap_error(enum siw_access_state state); void siw_read_to_orq(struct siw_sqe *rreq, struct siw_sqe *sqe); int siw_sqe_complete(struct siw_qp *qp, struct siw_sqe *sqe, u32 bytes, enum siw_wc_status status); int siw_rqe_complete(struct siw_qp *qp, struct siw_rqe *rqe, u32 bytes, u32 inval_stag, enum siw_wc_status status); void siw_qp_llp_data_ready(struct sock *sk); void siw_qp_llp_write_space(struct sock *sk); /* QP TX path functions */ int siw_create_tx_threads(void); void siw_stop_tx_threads(void); int siw_run_sq(void *arg); int siw_qp_sq_process(struct siw_qp *qp); int siw_sq_start(struct siw_qp *qp); int siw_activate_tx(struct siw_qp *qp); int siw_get_tx_cpu(struct siw_device *sdev); void siw_put_tx_cpu(int cpu); /* QP RX path functions */ int siw_proc_send(struct siw_qp *qp); int siw_proc_rreq(struct siw_qp *qp); int siw_proc_rresp(struct siw_qp *qp); int siw_proc_write(struct siw_qp *qp); int siw_proc_terminate(struct siw_qp *qp); int siw_tcp_rx_data(read_descriptor_t *rd_desc, struct sk_buff *skb, unsigned int off, size_t len); static inline void set_rx_fpdu_context(struct siw_qp *qp, u8 opcode) { … } static inline struct siw_ucontext *to_siw_ctx(struct ib_ucontext *base_ctx) { … } static inline struct siw_qp *to_siw_qp(struct ib_qp *base_qp) { … } static inline struct siw_cq *to_siw_cq(struct ib_cq *base_cq) { … } static inline struct siw_srq *to_siw_srq(struct ib_srq *base_srq) { … } static inline struct siw_device *to_siw_dev(struct ib_device *base_dev) { … } static inline struct siw_mr *to_siw_mr(struct ib_mr *base_mr) { … } static inline struct siw_user_mmap_entry * to_siw_mmap_entry(struct rdma_user_mmap_entry *rdma_mmap) { … } static inline struct siw_qp *siw_qp_id2obj(struct siw_device *sdev, int id) { … } static inline u32 qp_id(struct siw_qp *qp) { … } static inline void siw_qp_get(struct siw_qp *qp) { … } static inline void siw_qp_put(struct siw_qp *qp) { … } static inline int siw_sq_empty(struct siw_qp *qp) { … } static inline struct siw_sqe *sq_get_next(struct siw_qp *qp) { … } static inline struct siw_sqe *orq_get_current(struct siw_qp *qp) { … } static inline struct siw_sqe *orq_get_free(struct siw_qp *qp) { … } static inline int siw_orq_empty(struct siw_qp *qp) { … } static inline struct siw_sqe *irq_alloc_free(struct siw_qp *qp) { … } static inline __wsum siw_csum_update(const void *buff, int len, __wsum sum) { … } static inline __wsum siw_csum_combine(__wsum csum, __wsum csum2, int offset, int len) { … } static inline void siw_crc_skb(struct siw_rx_stream *srx, unsigned int len) { … } #define siw_dbg(ibdev, fmt, ...) … #define siw_dbg_qp(qp, fmt, ...) … #define siw_dbg_cq(cq, fmt, ...) … #define siw_dbg_pd(pd, fmt, ...) … #define siw_dbg_mem(mem, fmt, ...) … #define siw_dbg_cep(cep, fmt, ...) … void siw_cq_flush(struct siw_cq *cq); void siw_sq_flush(struct siw_qp *qp); void siw_rq_flush(struct siw_qp *qp); int siw_reap_cqe(struct siw_cq *cq, struct ib_wc *wc); #endif
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