diff options
Diffstat (limited to 'net/smc/smc_core.h')
| -rw-r--r-- | net/smc/smc_core.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h index bf0026db44e9..ca4587a95450 100644 --- a/net/smc/smc_core.h +++ b/net/smc/smc_core.h @@ -11,6 +11,7 @@ #ifndef _SMC_CORE_H #define _SMC_CORE_H +#include <linux/atomic.h> #include <rdma/ib_verbs.h> #include "smc.h" @@ -30,11 +31,40 @@ enum smc_lgr_role { /* possible roles of a link group */ SMC_SERV /* server */ }; +#define SMC_WR_BUF_SIZE 48 /* size of work request buffer */ + +struct smc_wr_buf { + u8 raw[SMC_WR_BUF_SIZE]; +}; + struct smc_link { struct smc_ib_device *smcibdev; /* ib-device */ u8 ibport; /* port - values 1 | 2 */ + struct ib_pd *roce_pd; /* IB protection domain, + * unique for every RoCE QP + */ struct ib_qp *roce_qp; /* IB queue pair */ struct ib_qp_attr qp_attr; /* IB queue pair attributes */ + + struct smc_wr_buf *wr_tx_bufs; /* WR send payload buffers */ + struct ib_send_wr *wr_tx_ibs; /* WR send meta data */ + struct ib_sge *wr_tx_sges; /* WR send gather meta data */ + struct smc_wr_tx_pend *wr_tx_pends; /* WR send waiting for CQE */ + /* above four vectors have wr_tx_cnt elements and use the same index */ + dma_addr_t wr_tx_dma_addr; /* DMA address of wr_tx_bufs */ + atomic_long_t wr_tx_id; /* seq # of last sent WR */ + unsigned long *wr_tx_mask; /* bit mask of used indexes */ + u32 wr_tx_cnt; /* number of WR send buffers */ + wait_queue_head_t wr_tx_wait; /* wait for free WR send buf */ + + struct smc_wr_buf *wr_rx_bufs; /* WR recv payload buffers */ + struct ib_recv_wr *wr_rx_ibs; /* WR recv meta data */ + struct ib_sge *wr_rx_sges; /* WR recv scatter meta data */ + /* above three vectors have wr_rx_cnt elements and use the same index */ + dma_addr_t wr_rx_dma_addr; /* DMA address of wr_rx_bufs */ + u64 wr_rx_id; /* seq # of last recv WR */ + u32 wr_rx_cnt; /* number of WR recv buffers */ + union ib_gid gid; /* gid matching used vlan id */ u32 peer_qpn; /* QP number of peer */ enum ib_mtu path_mtu; /* used mtu */ |