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IB/qib: Process RDMA WRITE ONLY with IMMEDIATE properly 

See table 35 in IBA - the header order for RDMA_WRITE_ONLY_WITH_IMMEDIATE
and SEND_LAST_WITH_IMMEDIATE is different: the RDMA_WRITE_ONLY has
a RETH header before the immediate data, so we need a different code path
to extract the immediate data.

I tested this with a userspace app that does RDMA_WRITE with immediate
on a QLE7140.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Jason Gunthorpe 2010-10-22 22:00:48 +00:00 committed by Roland Dreier
parent 0f2f930a67
commit 5715f5d44b
2 changed files with 8 additions and 3 deletions
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5
drivers/infiniband/hw/qib/qib_rc.c
View File

@ -2068,7 +2068,10 @@ send_last:
goto nack_op_err;
if (!ret)
goto rnr_nak;
goto send_last_imm;
wc.ex.imm_data = ohdr->u.rc.imm_data;
hdrsize += 4;
wc.wc_flags = IB_WC_WITH_IMM;
goto send_last;
case OP(RDMA_READ_REQUEST): {
struct qib_ack_entry *e;

6
drivers/infiniband/hw/qib/qib_uc.c
View File

@ -457,8 +457,10 @@ rdma_first:
}
if (opcode == OP(RDMA_WRITE_ONLY))
goto rdma_last;
else if (opcode == OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE))
else if (opcode == OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE)) {
wc.ex.imm_data = ohdr->u.rc.imm_data;
goto rdma_last_imm;
}
/* FALLTHROUGH */
case OP(RDMA_WRITE_MIDDLE):
/* Check for invalid length PMTU or posted rwqe len. */
@ -471,8 +473,8 @@ rdma_first:
break;
case OP(RDMA_WRITE_LAST_WITH_IMMEDIATE):
rdma_last_imm:
wc.ex.imm_data = ohdr->u.imm_data;
rdma_last_imm:
hdrsize += 4;
wc.wc_flags = IB_WC_WITH_IMM;