From f38ba179c6ca94ebeb0ac6a0956c4ea533151ad8 Mon Sep 17 00:00:00 2001 From: Ursula Braun Date: Mon, 9 Jan 2017 16:55:19 +0100 Subject: smc: work request (WR) base for use by LLC and CDC The base containers for RDMA transport are work requests and completion queue entries processed through Infiniband verbs: * allocate and initialize these areas * map these areas to DMA * implement the basic communication consisting of work request posting and receival of completion queue events Signed-off-by: Ursula Braun Signed-off-by: David S. Miller --- net/smc/smc_ib.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'net/smc/smc_ib.h') diff --git a/net/smc/smc_ib.h b/net/smc/smc_ib.h index c3b61726861a..441fd168911d 100644 --- a/net/smc/smc_ib.h +++ b/net/smc/smc_ib.h @@ -16,6 +16,8 @@ #define SMC_MAX_PORTS 2 /* Max # of ports */ #define SMC_GID_SIZE sizeof(union ib_gid) +#define SMC_IB_MAX_SEND_SGE 2 + struct smc_ib_devices { /* list of smc ib devices definition */ struct list_head list; spinlock_t lock; /* protects list of smc ib devices */ @@ -27,12 +29,17 @@ struct smc_ib_device { /* ib-device infos for smc */ struct list_head list; struct ib_device *ibdev; struct ib_port_attr pattr[SMC_MAX_PORTS]; /* ib dev. port attrs */ + struct ib_cq *roce_cq_send; /* send completion queue */ + struct ib_cq *roce_cq_recv; /* recv completion queue */ + struct tasklet_struct send_tasklet; /* called by send cq handler */ + struct tasklet_struct recv_tasklet; /* called by recv cq handler */ char mac[SMC_MAX_PORTS][6]; /* mac address per port*/ union ib_gid gid[SMC_MAX_PORTS]; /* gid per port */ u8 initialized : 1; /* ib dev CQ, evthdl done */ }; struct smc_buf_desc; +struct smc_link; int smc_ib_register_client(void) __init; void smc_ib_unregister_client(void); @@ -41,5 +48,9 @@ int smc_ib_remember_port_attr(struct smc_ib_device *smcibdev, u8 ibport); int smc_ib_buf_map(struct smc_ib_device *smcibdev, int buf_size, struct smc_buf_desc *buf_slot, enum dma_data_direction data_direction); +void smc_ib_dealloc_protection_domain(struct smc_link *lnk); +int smc_ib_create_protection_domain(struct smc_link *lnk); +void smc_ib_destroy_queue_pair(struct smc_link *lnk); +int smc_ib_create_queue_pair(struct smc_link *lnk); #endif -- cgit v1.2.3