297 lines
8.5 KiB
C
297 lines
8.5 KiB
C
/*
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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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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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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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int rxe_av_chk_attr(struct rxe_dev *rxe, 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);
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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_ucontext *context,
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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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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_entry *arg);
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/* rxe_mcast.c */
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int rxe_mcast_get_grp(struct rxe_dev *rxe, union ib_gid *mgid,
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struct rxe_mc_grp **grp_p);
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int rxe_mcast_add_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp,
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struct rxe_mc_grp *grp);
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int rxe_mcast_drop_grp_elem(struct rxe_dev *rxe, struct rxe_qp *qp,
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union ib_gid *mgid);
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void rxe_drop_all_mcast_groups(struct rxe_qp *qp);
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void rxe_mc_cleanup(struct rxe_pool_entry *arg);
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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,
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u32 size,
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struct ib_ucontext *context,
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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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enum copy_direction {
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to_mem_obj,
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from_mem_obj,
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};
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int rxe_mem_init_dma(struct rxe_pd *pd,
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int access, struct rxe_mem *mem);
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int rxe_mem_init_user(struct rxe_pd *pd, u64 start,
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u64 length, u64 iova, int access, struct ib_udata *udata,
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struct rxe_mem *mr);
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int rxe_mem_init_fast(struct rxe_pd *pd,
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int max_pages, struct rxe_mem *mem);
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int rxe_mem_copy(struct rxe_mem *mem, u64 iova, void *addr,
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int length, enum copy_direction dir, u32 *crcp);
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int copy_data(struct rxe_pd *pd, int access,
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struct rxe_dma_info *dma, void *addr, int length,
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enum copy_direction dir, u32 *crcp);
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void *iova_to_vaddr(struct rxe_mem *mem, u64 iova, int length);
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enum lookup_type {
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lookup_local,
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lookup_remote,
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};
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struct rxe_mem *lookup_mem(struct rxe_pd *pd, int access, u32 key,
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enum lookup_type type);
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int mem_check_range(struct rxe_mem *mem, u64 iova, size_t length);
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int rxe_mem_map_pages(struct rxe_dev *rxe, struct rxe_mem *mem,
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u64 *page, int num_pages, u64 iova);
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void rxe_mem_cleanup(struct rxe_pool_entry *arg);
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int advance_dma_data(struct rxe_dma_info *dma, unsigned int length);
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/* rxe_net.c */
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void rxe_loopback(struct sk_buff *skb);
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int rxe_send(struct rxe_pkt_info *pkt, struct sk_buff *skb);
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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_dev *rxe, struct rxe_pkt_info *pkt,
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struct sk_buff *skb, u32 *crc);
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enum rdma_link_layer rxe_link_layer(struct rxe_dev *rxe, unsigned int port_num);
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const char *rxe_parent_name(struct rxe_dev *rxe, unsigned int port_num);
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struct device *rxe_dma_device(struct rxe_dev *rxe);
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int rxe_mcast_add(struct rxe_dev *rxe, union ib_gid *mgid);
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int rxe_mcast_delete(struct rxe_dev *rxe, union ib_gid *mgid);
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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);
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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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void rxe_qp_destroy(struct rxe_qp *qp);
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void rxe_qp_cleanup(struct rxe_pool_entry *arg);
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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 RXE_PORT_MAX_MTU;
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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 rxe_qp *qp, 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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#define IB_SRQ_INIT_MASK (~IB_SRQ_LIMIT)
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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_init(struct rxe_dev *rxe, struct rxe_srq *srq,
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struct ib_srq_init_attr *init,
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struct ib_ucontext *context,
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struct rxe_create_srq_resp __user *uresp);
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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);
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void rxe_release(struct kref *kref);
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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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u32 rxe_icrc_hdr(struct rxe_pkt_info *pkt, struct sk_buff *skb);
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void rxe_resp_queue_pkt(struct rxe_dev *rxe,
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struct rxe_qp *qp, struct sk_buff *skb);
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void rxe_comp_queue_pkt(struct rxe_dev *rxe,
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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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static inline int rxe_xmit_packet(struct rxe_dev *rxe, struct rxe_qp *qp,
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struct rxe_pkt_info *pkt, struct sk_buff *skb)
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{
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int err;
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int is_request = pkt->mask & RXE_REQ_MASK;
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if ((is_request && (qp->req.state != QP_STATE_READY)) ||
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(!is_request && (qp->resp.state != QP_STATE_READY))) {
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pr_info("Packet dropped. QP is not in ready state\n");
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goto drop;
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}
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if (pkt->mask & RXE_LOOPBACK_MASK) {
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memcpy(SKB_TO_PKT(skb), pkt, sizeof(*pkt));
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rxe_loopback(skb);
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err = 0;
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} else {
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err = rxe_send(pkt, skb);
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}
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if (err) {
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rxe->xmit_errors++;
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rxe_counter_inc(rxe, RXE_CNT_SEND_ERR);
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return err;
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}
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if ((qp_type(qp) != IB_QPT_RC) &&
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(pkt->mask & RXE_END_MASK)) {
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pkt->wqe->state = wqe_state_done;
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rxe_run_task(&qp->comp.task, 1);
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}
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rxe_counter_inc(rxe, RXE_CNT_SENT_PKTS);
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goto done;
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drop:
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kfree_skb(skb);
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err = 0;
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done:
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return err;
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}
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#endif /* RXE_LOC_H */
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