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a3fe3d01bd
The follow-on patch makes use of ib_map_mr_sg() when introducing separate memory regions for RMBs. This function is based on scatterlists; thus this patch introduces scatterlists for RMBs. Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
/*
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* Shared Memory Communications over RDMA (SMC-R) and RoCE
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*
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* Definitions for IB environment
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*
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* Copyright IBM Corp. 2016
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*
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* Author(s): Ursula Braun <Ursula Braun@linux.vnet.ibm.com>
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*/
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#ifndef _SMC_IB_H
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#define _SMC_IB_H
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#include <linux/interrupt.h>
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#include <linux/if_ether.h>
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#include <rdma/ib_verbs.h>
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#define SMC_MAX_PORTS 2 /* Max # of ports */
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#define SMC_GID_SIZE sizeof(union ib_gid)
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#define SMC_IB_MAX_SEND_SGE 2
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struct smc_ib_devices { /* list of smc ib devices definition */
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struct list_head list;
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spinlock_t lock; /* protects list of smc ib devices */
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};
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extern struct smc_ib_devices smc_ib_devices; /* list of smc ib devices */
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struct smc_ib_device { /* ib-device infos for smc */
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struct list_head list;
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struct ib_device *ibdev;
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struct ib_port_attr pattr[SMC_MAX_PORTS]; /* ib dev. port attrs */
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struct ib_event_handler event_handler; /* global ib_event handler */
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struct ib_cq *roce_cq_send; /* send completion queue */
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struct ib_cq *roce_cq_recv; /* recv completion queue */
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struct tasklet_struct send_tasklet; /* called by send cq handler */
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struct tasklet_struct recv_tasklet; /* called by recv cq handler */
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char mac[SMC_MAX_PORTS][ETH_ALEN];
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/* mac address per port*/
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union ib_gid gid[SMC_MAX_PORTS]; /* gid per port */
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u8 initialized : 1; /* ib dev CQ, evthdl done */
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struct work_struct port_event_work;
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unsigned long port_event_mask;
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};
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struct smc_buf_desc;
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struct smc_link;
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int smc_ib_register_client(void) __init;
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void smc_ib_unregister_client(void);
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bool smc_ib_port_active(struct smc_ib_device *smcibdev, u8 ibport);
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int smc_ib_remember_port_attr(struct smc_ib_device *smcibdev, u8 ibport);
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int smc_ib_buf_map(struct smc_ib_device *smcibdev, int buf_size,
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struct smc_buf_desc *buf_slot,
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enum dma_data_direction data_direction);
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void smc_ib_buf_unmap(struct smc_ib_device *smcibdev, int bufsize,
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struct smc_buf_desc *buf_slot,
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enum dma_data_direction data_direction);
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int smc_ib_buf_map_sg(struct smc_ib_device *smcibdev,
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struct smc_buf_desc *buf_slot,
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enum dma_data_direction data_direction);
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void smc_ib_buf_unmap_sg(struct smc_ib_device *smcibdev,
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struct smc_buf_desc *buf_slot,
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enum dma_data_direction data_direction);
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void smc_ib_dealloc_protection_domain(struct smc_link *lnk);
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int smc_ib_create_protection_domain(struct smc_link *lnk);
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void smc_ib_destroy_queue_pair(struct smc_link *lnk);
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int smc_ib_create_queue_pair(struct smc_link *lnk);
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int smc_ib_ready_link(struct smc_link *lnk);
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int smc_ib_modify_qp_rts(struct smc_link *lnk);
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int smc_ib_modify_qp_reset(struct smc_link *lnk);
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long smc_ib_setup_per_ibdev(struct smc_ib_device *smcibdev);
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#endif
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