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Diffstat (limited to 'net/smc/smc_core.h')
-rw-r--r--net/smc/smc_core.h30
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 */