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RDMA/rxe: Make requester support atomic write on RC service 

Make requester process and send an atomic write request on RC service.

Link: https://lore.kernel.org/r/1669905568-62-1-git-send-email-yangx.jy@fujitsu.com
Signed-off-by: Xiao Yang <yangx.jy@fujitsu.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Xiao Yang 2022-12-01 14:39:25 +00:00 committed by Jason Gunthorpe
parent 5c7af6c793
commit abb633cf28
1 changed files with 13 additions and 2 deletions
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15
drivers/infiniband/sw/rxe/rxe_req.c
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@ -258,6 +258,10 @@ static int next_opcode_rc(struct rxe_qp *qp, u32 opcode, int fits)
else
return fits ? IB_OPCODE_RC_SEND_ONLY_WITH_INVALIDATE :
IB_OPCODE_RC_SEND_FIRST;
case IB_WR_ATOMIC_WRITE:
return IB_OPCODE_RC_ATOMIC_WRITE;
case IB_WR_REG_MR:
case IB_WR_LOCAL_INV:
return opcode;
@ -486,6 +490,11 @@ static int finish_packet(struct rxe_qp *qp, struct rxe_av *av,
}
}
if (pkt->mask & RXE_ATOMIC_WRITE_MASK) {
memcpy(payload_addr(pkt), wqe->dma.atomic_wr, payload);
wqe->dma.resid -= payload;
}
return 0;
}
@ -709,13 +718,15 @@ int rxe_requester(void *arg)
}
mask = rxe_opcode[opcode].mask;
if (unlikely(mask & RXE_READ_OR_ATOMIC_MASK)) {
if (unlikely(mask & (RXE_READ_OR_ATOMIC_MASK |
RXE_ATOMIC_WRITE_MASK))) {
if (check_init_depth(qp, wqe))
goto exit;
}
mtu = get_mtu(qp);
payload = (mask & RXE_WRITE_OR_SEND_MASK) ? wqe->dma.resid : 0;
payload = (mask & (RXE_WRITE_OR_SEND_MASK | RXE_ATOMIC_WRITE_MASK)) ?
wqe->dma.resid : 0;
if (payload > mtu) {
if (qp_type(qp) == IB_QPT_UD) {
/* C10-93.1.1: If the total sum of all the buffer lengths specified for a