diff options
| author | Ursula Braun <ubraun@linux.vnet.ibm.com> | 2017-07-28 14:56:16 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-29 21:22:58 +0300 |
| commit | 897e1c245773d93f26f125a99674f585a3aeef5d (patch) | |
| tree | 9b41a96c8e1ee830f411d263556997bf6388dc53 /net/smc/smc_core.h | |
| parent | a3fe3d01bd0d7cd6ee7a5e3eebc0926c47954fe7 (diff) | |
| download | linux-897e1c245773d93f26f125a99674f585a3aeef5d.tar.xz | |
net/smc: use separate memory regions for RMBs
SMC currently uses the unsafe_global_rkey of the protection domain,
which exposes all memory for remote reads and writes once a connection
is established. This patch introduces separate memory regions with
separate rkeys for every RMB. Now the unsafe_global_rkey of the
protection domain is no longer needed.
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 | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h index 0ee450d69907..17b5fea09901 100644 --- a/net/smc/smc_core.h +++ b/net/smc/smc_core.h @@ -94,8 +94,13 @@ struct smc_buf_desc { /* mapped address of buffer */ void *cpu_addr; /* virtual address of buffer */ struct sg_table sgt[SMC_LINKS_PER_LGR_MAX];/* virtual buffer */ + struct ib_mr *mr_rx[SMC_LINKS_PER_LGR_MAX]; + /* for rmb only: memory region + * incl. rkey provided to peer + */ u32 order; /* allocation order */ u32 used; /* currently used / unused */ + bool reused; /* new created / reused */ }; struct smc_rtoken { /* address/key of remote RMB */ @@ -175,5 +180,4 @@ int smc_sndbuf_create(struct smc_sock *smc); int smc_rmb_create(struct smc_sock *smc); int smc_rmb_rtoken_handling(struct smc_connection *conn, struct smc_clc_msg_accept_confirm *clc); - #endif |