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| author | Bob Pearson <rpearsonhpe@gmail.com> | 2022-06-06 09:38:34 -0500 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2022-06-30 13:54:04 -0300 |
| commit | 0ed5493e430a1d887eb62b45c75dd5d6bb2dcf48 (patch) | |
| tree | 68a473638f5e4b247c40eaca5332d084f0081bf6 /drivers/infiniband/sw/rxe/rxe_resp.c | |
| parent | 24f0ab0102115c7569379a606f9a26826577522f (diff) | |
| download | linux-0ed5493e430a1d887eb62b45c75dd5d6bb2dcf48.tar.bz2 | |
RDMA/rxe: Add a responder state for atomic reply
Add a responder state for atomic reply similar to read reply and rename
process_atomic() rxe_atomic_reply(). In preparation for merging the normal
and retry atomic responder flows.
Link: https://lore.kernel.org/r/20220606143836.3323-3-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/sw/rxe/rxe_resp.c')
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_resp.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c index bc84aad62f56..66d4d02fedf1 100644 --- a/drivers/infiniband/sw/rxe/rxe_resp.c +++ b/drivers/infiniband/sw/rxe/rxe_resp.c @@ -21,6 +21,7 @@ enum resp_states { RESPST_CHK_RKEY, RESPST_EXECUTE, RESPST_READ_REPLY, + RESPST_ATOMIC_REPLY, RESPST_COMPLETE, RESPST_ACKNOWLEDGE, RESPST_CLEANUP, @@ -55,6 +56,7 @@ static char *resp_state_name[] = { [RESPST_CHK_RKEY] = "CHK_RKEY", [RESPST_EXECUTE] = "EXECUTE", [RESPST_READ_REPLY] = "READ_REPLY", + [RESPST_ATOMIC_REPLY] = "ATOMIC_REPLY", [RESPST_COMPLETE] = "COMPLETE", [RESPST_ACKNOWLEDGE] = "ACKNOWLEDGE", [RESPST_CLEANUP] = "CLEANUP", @@ -552,8 +554,8 @@ out: /* Guarantee atomicity of atomic operations at the machine level. */ static DEFINE_SPINLOCK(atomic_ops_lock); -static enum resp_states process_atomic(struct rxe_qp *qp, - struct rxe_pkt_info *pkt) +static enum resp_states rxe_atomic_reply(struct rxe_qp *qp, + struct rxe_pkt_info *pkt) { u64 *vaddr; enum resp_states ret; @@ -585,7 +587,16 @@ static enum resp_states process_atomic(struct rxe_qp *qp, spin_unlock_bh(&atomic_ops_lock); - ret = RESPST_NONE; + qp->resp.msn++; + + /* next expected psn, read handles this separately */ + qp->resp.psn = (pkt->psn + 1) & BTH_PSN_MASK; + qp->resp.ack_psn = qp->resp.psn; + + qp->resp.opcode = pkt->opcode; + qp->resp.status = IB_WC_SUCCESS; + + ret = RESPST_ACKNOWLEDGE; out: return ret; } @@ -857,9 +868,7 @@ static enum resp_states execute(struct rxe_qp *qp, struct rxe_pkt_info *pkt) qp->resp.msn++; return RESPST_READ_REPLY; } else if (pkt->mask & RXE_ATOMIC_MASK) { - err = process_atomic(qp, pkt); - if (err) - return err; + return RESPST_ATOMIC_REPLY; } else { /* Unreachable */ WARN_ON_ONCE(1); @@ -1323,6 +1332,9 @@ int rxe_responder(void *arg) case RESPST_READ_REPLY: state = read_reply(qp, pkt); break; + case RESPST_ATOMIC_REPLY: + state = rxe_atomic_reply(qp, pkt); + break; case RESPST_ACKNOWLEDGE: state = acknowledge(qp, pkt); break; |