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| author | Andy Grover <andy.grover@oracle.com> | 2010-08-25 05:51:28 -0700 |
|---|---|---|
| committer | Andy Grover <andy.grover@oracle.com> | 2010-09-08 18:16:51 -0700 |
| commit | 20c72bd5f5f902e5a8745d51573699605bf8d21c (patch) | |
| tree | 6df337e07d423a0859ab92f25525570e134baba1 /net/rds/rdma.c | |
| parent | 59f740a6aeb2cde2f79fe0df38262d4c1ef35cd8 (diff) | |
| download | linux-20c72bd5f5f902e5a8745d51573699605bf8d21c.tar.gz | |
RDS: Implement masked atomic operations
Add two CMSGs for masked versions of cswp and fadd. args struct modified to use a union for different atomic op type's arguments. Change IB to do masked atomic ops. Atomic op type in rds_message similarly unionized. Signed-off-by: Andy Grover <andy.grover@oracle.com>
Diffstat (limited to 'net/rds/rdma.c')
| -rw-r--r-- | net/rds/rdma.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/net/rds/rdma.c b/net/rds/rdma.c index 48781fe4431c..48064673fc76 100644 --- a/net/rds/rdma.c +++ b/net/rds/rdma.c @@ -738,13 +738,34 @@ int rds_cmsg_atomic(struct rds_sock *rs, struct rds_message *rm, args = CMSG_DATA(cmsg); - if (cmsg->cmsg_type == RDS_CMSG_ATOMIC_CSWP) { - rm->atomic.op_type = RDS_ATOMIC_TYPE_CSWP; - rm->atomic.op_swap_add = args->cswp.swap; - rm->atomic.op_compare = args->cswp.compare; - } else { + /* Nonmasked & masked cmsg ops converted to masked hw ops */ + switch (cmsg->cmsg_type) { + case RDS_CMSG_ATOMIC_FADD: + rm->atomic.op_type = RDS_ATOMIC_TYPE_FADD; + rm->atomic.op_m_fadd.add = args->fadd.add; + rm->atomic.op_m_fadd.nocarry_mask = 0; + break; + case RDS_CMSG_MASKED_ATOMIC_FADD: rm->atomic.op_type = RDS_ATOMIC_TYPE_FADD; - rm->atomic.op_swap_add = args->fadd.add; + rm->atomic.op_m_fadd.add = args->m_fadd.add; + rm->atomic.op_m_fadd.nocarry_mask = args->m_fadd.nocarry_mask; + break; + case RDS_CMSG_ATOMIC_CSWP: + rm->atomic.op_type = RDS_ATOMIC_TYPE_CSWP; + rm->atomic.op_m_cswp.compare = args->cswp.compare; + rm->atomic.op_m_cswp.swap = args->cswp.swap; + rm->atomic.op_m_cswp.compare_mask = ~0; + rm->atomic.op_m_cswp.swap_mask = ~0; + break; + case RDS_CMSG_MASKED_ATOMIC_CSWP: + rm->atomic.op_type = RDS_ATOMIC_TYPE_CSWP; + rm->atomic.op_m_cswp.compare = args->m_cswp.compare; + rm->atomic.op_m_cswp.swap = args->m_cswp.swap; + rm->atomic.op_m_cswp.compare_mask = args->m_cswp.compare_mask; + rm->atomic.op_m_cswp.swap_mask = args->m_cswp.swap_mask; + break; + default: + BUG(); /* should never happen */ } rm->atomic.op_notify = !!(args->flags & RDS_RDMA_NOTIFY_ME); |