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| author | Ursula Braun | 2017-07-28 13:56:17 +0200 |
|---|---|---|
| committer | David S. Miller | 2017-07-29 20:22:58 +0200 |
| commit | 652a1e41eca7dfaacc47a79badb4a51aea570d35 (patch) | |
| tree | e82c80636c8e25421761b0dd28e0659686cf4128 /net/smc/smc_core.h | |
| parent | net/smc: use separate memory regions for RMBs (diff) | |
| download | kernel-qcow2-linux-652a1e41eca7dfaacc47a79badb4a51aea570d35.tar.gz kernel-qcow2-linux-652a1e41eca7dfaacc47a79badb4a51aea570d35.tar.xz kernel-qcow2-linux-652a1e41eca7dfaacc47a79badb4a51aea570d35.zip | |
net/smc: register RMB-related memory region
A memory region created for a new RMB must be registered explicitly,
before the peer can make use of it for remote DMA transfer.
Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/smc/smc_core.h')
| -rw-r--r-- | net/smc/smc_core.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h index 17b5fea09901..f7b40bdbf24c 100644 --- a/net/smc/smc_core.h +++ b/net/smc/smc_core.h @@ -37,6 +37,14 @@ struct smc_wr_buf { u8 raw[SMC_WR_BUF_SIZE]; }; +#define SMC_WR_REG_MR_WAIT_TIME (5 * HZ)/* wait time for ib_wr_reg_mr result */ + +enum smc_wr_reg_state { + POSTED, /* ib_wr_reg_mr request posted */ + CONFIRMED, /* ib_wr_reg_mr response: successful */ + FAILED /* ib_wr_reg_mr response: failure */ +}; + struct smc_link { struct smc_ib_device *smcibdev; /* ib-device */ u8 ibport; /* port - values 1 | 2 */ @@ -65,6 +73,10 @@ struct smc_link { u64 wr_rx_id; /* seq # of last recv WR */ u32 wr_rx_cnt; /* number of WR recv buffers */ + struct ib_reg_wr wr_reg; /* WR register memory region */ + wait_queue_head_t wr_reg_wait; /* wait for wr_reg result */ + enum smc_wr_reg_state wr_reg_state; /* state of wr_reg request */ + union ib_gid gid; /* gid matching used vlan id */ u32 peer_qpn; /* QP number of peer */ enum ib_mtu path_mtu; /* used mtu */ |