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592627ccbd
Replace struct rxe-phys_buf and struct rxe_map by struct xarray in rxe_verbs.h. This allows using rcu locking on reads for the memory maps stored in each mr. This is based off of a sketch of a patch from Jason Gunthorpe in the link below. Some changes were needed to make this work. It applies cleanly to the current for-next and passes the pyverbs, perftest and the same blktests test cases which run today. Link: https://lore.kernel.org/r/20230119235936.19728-7-rpearsonhpe@gmail.com Link: https://lore.kernel.org/linux-rdma/Y3gvZr6%2FNCii9Avy@nvidia.com/ Co-developed-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
193 lines
6.8 KiB
C
193 lines
6.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/*
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* Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved.
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* Copyright (c) 2015 System Fabric Works, Inc. All rights reserved.
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*/
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#ifndef RXE_LOC_H
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#define RXE_LOC_H
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/* rxe_av.c */
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void rxe_init_av(struct rdma_ah_attr *attr, struct rxe_av *av);
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int rxe_av_chk_attr(struct rxe_qp *qp, struct rdma_ah_attr *attr);
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int rxe_ah_chk_attr(struct rxe_ah *ah, struct rdma_ah_attr *attr);
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void rxe_av_from_attr(u8 port_num, struct rxe_av *av,
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struct rdma_ah_attr *attr);
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void rxe_av_to_attr(struct rxe_av *av, struct rdma_ah_attr *attr);
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void rxe_av_fill_ip_info(struct rxe_av *av, struct rdma_ah_attr *attr);
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struct rxe_av *rxe_get_av(struct rxe_pkt_info *pkt, struct rxe_ah **ahp);
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/* rxe_cq.c */
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int rxe_cq_chk_attr(struct rxe_dev *rxe, struct rxe_cq *cq,
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int cqe, int comp_vector);
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int rxe_cq_from_init(struct rxe_dev *rxe, struct rxe_cq *cq, int cqe,
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int comp_vector, struct ib_udata *udata,
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struct rxe_create_cq_resp __user *uresp);
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int rxe_cq_resize_queue(struct rxe_cq *cq, int new_cqe,
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struct rxe_resize_cq_resp __user *uresp,
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struct ib_udata *udata);
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int rxe_cq_post(struct rxe_cq *cq, struct rxe_cqe *cqe, int solicited);
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void rxe_cq_disable(struct rxe_cq *cq);
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void rxe_cq_cleanup(struct rxe_pool_elem *elem);
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/* rxe_mcast.c */
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struct rxe_mcg *rxe_lookup_mcg(struct rxe_dev *rxe, union ib_gid *mgid);
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int rxe_attach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid);
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int rxe_detach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid);
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void rxe_cleanup_mcg(struct kref *kref);
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/* rxe_mmap.c */
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struct rxe_mmap_info {
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struct list_head pending_mmaps;
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struct ib_ucontext *context;
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struct kref ref;
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void *obj;
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struct mminfo info;
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};
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void rxe_mmap_release(struct kref *ref);
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struct rxe_mmap_info *rxe_create_mmap_info(struct rxe_dev *dev, u32 size,
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struct ib_udata *udata, void *obj);
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int rxe_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);
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/* rxe_mr.c */
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u8 rxe_get_next_key(u32 last_key);
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void rxe_mr_init_dma(int access, struct rxe_mr *mr);
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int rxe_mr_init_user(struct rxe_dev *rxe, u64 start, u64 length, u64 iova,
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int access, struct rxe_mr *mr);
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int rxe_mr_init_fast(int max_pages, struct rxe_mr *mr);
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int rxe_flush_pmem_iova(struct rxe_mr *mr, u64 iova, unsigned int length);
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int rxe_mr_copy(struct rxe_mr *mr, u64 iova, void *addr,
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unsigned int length, enum rxe_mr_copy_dir dir);
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int copy_data(struct rxe_pd *pd, int access, struct rxe_dma_info *dma,
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void *addr, int length, enum rxe_mr_copy_dir dir);
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int rxe_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
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int sg_nents, unsigned int *sg_offset);
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int rxe_mr_do_atomic_op(struct rxe_mr *mr, u64 iova, int opcode,
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u64 compare, u64 swap_add, u64 *orig_val);
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int rxe_mr_do_atomic_write(struct rxe_mr *mr, u64 iova, u64 value);
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struct rxe_mr *lookup_mr(struct rxe_pd *pd, int access, u32 key,
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enum rxe_mr_lookup_type type);
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int mr_check_range(struct rxe_mr *mr, u64 iova, size_t length);
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int advance_dma_data(struct rxe_dma_info *dma, unsigned int length);
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int rxe_invalidate_mr(struct rxe_qp *qp, u32 key);
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int rxe_reg_fast_mr(struct rxe_qp *qp, struct rxe_send_wqe *wqe);
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int rxe_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata);
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void rxe_mr_cleanup(struct rxe_pool_elem *elem);
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/* rxe_mw.c */
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int rxe_alloc_mw(struct ib_mw *ibmw, struct ib_udata *udata);
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int rxe_dealloc_mw(struct ib_mw *ibmw);
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int rxe_bind_mw(struct rxe_qp *qp, struct rxe_send_wqe *wqe);
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int rxe_invalidate_mw(struct rxe_qp *qp, u32 rkey);
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struct rxe_mw *rxe_lookup_mw(struct rxe_qp *qp, int access, u32 rkey);
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void rxe_mw_cleanup(struct rxe_pool_elem *elem);
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/* rxe_net.c */
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struct sk_buff *rxe_init_packet(struct rxe_dev *rxe, struct rxe_av *av,
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int paylen, struct rxe_pkt_info *pkt);
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int rxe_prepare(struct rxe_av *av, struct rxe_pkt_info *pkt,
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struct sk_buff *skb);
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int rxe_xmit_packet(struct rxe_qp *qp, struct rxe_pkt_info *pkt,
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struct sk_buff *skb);
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const char *rxe_parent_name(struct rxe_dev *rxe, unsigned int port_num);
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/* rxe_qp.c */
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int rxe_qp_chk_init(struct rxe_dev *rxe, struct ib_qp_init_attr *init);
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int rxe_qp_from_init(struct rxe_dev *rxe, struct rxe_qp *qp, struct rxe_pd *pd,
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struct ib_qp_init_attr *init,
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struct rxe_create_qp_resp __user *uresp,
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struct ib_pd *ibpd, struct ib_udata *udata);
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int rxe_qp_to_init(struct rxe_qp *qp, struct ib_qp_init_attr *init);
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int rxe_qp_chk_attr(struct rxe_dev *rxe, struct rxe_qp *qp,
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struct ib_qp_attr *attr, int mask);
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int rxe_qp_from_attr(struct rxe_qp *qp, struct ib_qp_attr *attr,
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int mask, struct ib_udata *udata);
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int rxe_qp_to_attr(struct rxe_qp *qp, struct ib_qp_attr *attr, int mask);
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void rxe_qp_error(struct rxe_qp *qp);
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int rxe_qp_chk_destroy(struct rxe_qp *qp);
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void rxe_qp_cleanup(struct rxe_pool_elem *elem);
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static inline int qp_num(struct rxe_qp *qp)
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{
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return qp->ibqp.qp_num;
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}
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static inline enum ib_qp_type qp_type(struct rxe_qp *qp)
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{
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return qp->ibqp.qp_type;
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}
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static inline enum ib_qp_state qp_state(struct rxe_qp *qp)
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{
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return qp->attr.qp_state;
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}
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static inline int qp_mtu(struct rxe_qp *qp)
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{
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if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC)
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return qp->attr.path_mtu;
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else
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return IB_MTU_4096;
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}
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static inline int rcv_wqe_size(int max_sge)
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{
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return sizeof(struct rxe_recv_wqe) +
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max_sge * sizeof(struct ib_sge);
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}
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void free_rd_atomic_resource(struct resp_res *res);
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static inline void rxe_advance_resp_resource(struct rxe_qp *qp)
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{
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qp->resp.res_head++;
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if (unlikely(qp->resp.res_head == qp->attr.max_dest_rd_atomic))
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qp->resp.res_head = 0;
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}
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void retransmit_timer(struct timer_list *t);
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void rnr_nak_timer(struct timer_list *t);
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/* rxe_srq.c */
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int rxe_srq_chk_init(struct rxe_dev *rxe, struct ib_srq_init_attr *init);
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int rxe_srq_from_init(struct rxe_dev *rxe, struct rxe_srq *srq,
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struct ib_srq_init_attr *init, struct ib_udata *udata,
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struct rxe_create_srq_resp __user *uresp);
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int rxe_srq_chk_attr(struct rxe_dev *rxe, struct rxe_srq *srq,
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struct ib_srq_attr *attr, enum ib_srq_attr_mask mask);
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int rxe_srq_from_attr(struct rxe_dev *rxe, struct rxe_srq *srq,
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struct ib_srq_attr *attr, enum ib_srq_attr_mask mask,
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struct rxe_modify_srq_cmd *ucmd, struct ib_udata *udata);
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void rxe_srq_cleanup(struct rxe_pool_elem *elem);
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void rxe_dealloc(struct ib_device *ib_dev);
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int rxe_completer(void *arg);
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int rxe_requester(void *arg);
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int rxe_responder(void *arg);
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/* rxe_icrc.c */
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int rxe_icrc_init(struct rxe_dev *rxe);
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int rxe_icrc_check(struct sk_buff *skb, struct rxe_pkt_info *pkt);
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void rxe_icrc_generate(struct sk_buff *skb, struct rxe_pkt_info *pkt);
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void rxe_resp_queue_pkt(struct rxe_qp *qp, struct sk_buff *skb);
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void rxe_comp_queue_pkt(struct rxe_qp *qp, struct sk_buff *skb);
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static inline unsigned int wr_opcode_mask(int opcode, struct rxe_qp *qp)
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{
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return rxe_wr_opcode_info[opcode].mask[qp->ibqp.qp_type];
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}
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#endif /* RXE_LOC_H */
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