[for-next 2/3] RDMA/ionic: set the SQ WQE color bit
From: Abhijit Gangurde
Date: Tue Oct 27 2026 - 05:24:44 EST
From: Amit Kumar <a.k@xxxxxxx>
The NIC uses the WQE color bit to tell one pass of the send queue
from the next. Userspace sets IONIC_V1_FLAG_COLOR and toggles it when
prod wraps. Do the same for kernel send queues, and start again at
the initial color when a QP reset returns prod to zero.
Signed-off-by: Amit Kumar <a.k@xxxxxxx>
Signed-off-by: Abhijit Gangurde <abhijit.gangurde@xxxxxxx>
---
drivers/infiniband/hw/ionic/ionic_controlpath.c | 3 +++
drivers/infiniband/hw/ionic/ionic_datapath.c | 4 ++++
drivers/infiniband/hw/ionic/ionic_fw.h | 1 +
drivers/infiniband/hw/ionic/ionic_ibdev.h | 1 +
4 files changed, 9 insertions(+)
diff --git a/drivers/infiniband/hw/ionic/ionic_controlpath.c b/drivers/infiniband/hw/ionic/ionic_controlpath.c
index 00f9086f3bab..1738635bacf4 100644
--- a/drivers/infiniband/hw/ionic/ionic_controlpath.c
+++ b/drivers/infiniband/hw/ionic/ionic_controlpath.c
@@ -1949,6 +1949,8 @@ static int ionic_qp_sq_init(struct ionic_ibdev *dev, struct ionic_ctx *ctx,
return rc;
}
+ qp->sq_color = true;
+
rc = -EINVAL;
if (max_wr < 0 || max_wr > 0xffff)
@@ -2662,6 +2664,7 @@ static void ionic_reset_qp(struct ionic_ibdev *dev, struct ionic_qp *qp)
qp->sq_msn_cons = 0;
qp->sq.prod = 0;
qp->sq.cons = 0;
+ qp->sq_color = true;
spin_unlock(&qp->sq_lock);
}
diff --git a/drivers/infiniband/hw/ionic/ionic_datapath.c b/drivers/infiniband/hw/ionic/ionic_datapath.c
index c5726c6bd5cb..422e53e21054 100644
--- a/drivers/infiniband/hw/ionic/ionic_datapath.c
+++ b/drivers/infiniband/hw/ionic/ionic_datapath.c
@@ -820,6 +820,9 @@ static void ionic_prep_base(struct ionic_qp *qp,
wqe->base.wqe_idx = cpu_to_le64(qp->sq.prod);
+ if (qp->sq_color)
+ wqe->base.flags |= cpu_to_be16(IONIC_V1_FLAG_COLOR);
+
if (wr->send_flags & IB_SEND_FENCE)
wqe->base.flags |= cpu_to_be16(IONIC_V1_FLAG_FENCE);
@@ -843,6 +846,7 @@ static void ionic_prep_base(struct ionic_qp *qp,
}
ionic_queue_produce(&qp->sq);
+ qp->sq_color = ionic_color_wrap(qp->sq.prod, qp->sq_color);
}
static int ionic_prep_common(struct ionic_qp *qp,
diff --git a/drivers/infiniband/hw/ionic/ionic_fw.h b/drivers/infiniband/hw/ionic/ionic_fw.h
index 1db67fcb9a53..b8e996d4b8b9 100644
--- a/drivers/infiniband/hw/ionic/ionic_fw.h
+++ b/drivers/infiniband/hw/ionic/ionic_fw.h
@@ -532,6 +532,7 @@ enum ionic_v1_op {
IONIC_V1_FLAG_SOL = BIT(1),
IONIC_V1_FLAG_INL = BIT(2),
IONIC_V1_FLAG_SIG = BIT(3),
+ IONIC_V1_FLAG_COLOR = BIT(4),
/* flags last four bits for sgl spec format */
IONIC_V1_FLAG_SPEC32 = (1u << 12),
diff --git a/drivers/infiniband/hw/ionic/ionic_ibdev.h b/drivers/infiniband/hw/ionic/ionic_ibdev.h
index f8d580dd4d95..cf4b85355f26 100644
--- a/drivers/infiniband/hw/ionic/ionic_ibdev.h
+++ b/drivers/infiniband/hw/ionic/ionic_ibdev.h
@@ -306,6 +306,7 @@ struct ionic_qp {
u8 sq_cmb;
bool sq_flush;
bool sq_flush_rcvd;
+ bool sq_color;
struct ionic_rq rq;
--
2.43.0