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Date: Fri, 01 Dec 2023 15:28:40 -0800
From: Amritha Nambiar <amritha.nambiar@...el.com>
To: netdev@...r.kernel.org, kuba@...nel.org, pabeni@...hat.com
Cc: edumazet@...gle.com, ast@...nel.org, sdf@...gle.com, lorenzo@...nel.org,
tariqt@...dia.com, daniel@...earbox.net, anthony.l.nguyen@...el.com,
lucien.xin@...il.com, michael.chan@...adcom.com, hawk@...nel.org,
sridhar.samudrala@...el.com, amritha.nambiar@...el.com
Subject: [net-next PATCH v11 03/11] ice: Add support in the driver for
associating queue with napi
After the napi context is initialized, map the napi instance
with the queue/queue-set on the corresponding irq line.
Signed-off-by: Amritha Nambiar <amritha.nambiar@...el.com>
Reviewed-by: Sridhar Samudrala <sridhar.samudrala@...el.com>
---
drivers/net/ethernet/intel/ice/ice_base.c | 12 ++++-
drivers/net/ethernet/intel/ice/ice_lib.c | 67 +++++++++++++++++++++++++++++
drivers/net/ethernet/intel/ice/ice_lib.h | 4 ++
drivers/net/ethernet/intel/ice/ice_main.c | 4 +-
4 files changed, 84 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_base.c b/drivers/net/ethernet/intel/ice/ice_base.c
index 7fa43827a3f0..edad5f9ab16c 100644
--- a/drivers/net/ethernet/intel/ice/ice_base.c
+++ b/drivers/net/ethernet/intel/ice/ice_base.c
@@ -189,10 +189,18 @@ static void ice_free_q_vector(struct ice_vsi *vsi, int v_idx)
}
q_vector = vsi->q_vectors[v_idx];
- ice_for_each_tx_ring(tx_ring, q_vector->tx)
+ ice_for_each_tx_ring(tx_ring, q_vector->tx) {
+ if (vsi->netdev)
+ netif_queue_set_napi(vsi->netdev, tx_ring->q_index,
+ NETDEV_QUEUE_TYPE_TX, NULL);
tx_ring->q_vector = NULL;
- ice_for_each_rx_ring(rx_ring, q_vector->rx)
+ }
+ ice_for_each_rx_ring(rx_ring, q_vector->rx) {
+ if (vsi->netdev)
+ netif_queue_set_napi(vsi->netdev, rx_ring->q_index,
+ NETDEV_QUEUE_TYPE_RX, NULL);
rx_ring->q_vector = NULL;
+ }
/* only VSI with an associated netdev is set up with NAPI */
if (vsi->netdev)
diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index d826b5afa143..83f6977fad22 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -2452,6 +2452,10 @@ ice_vsi_cfg_def(struct ice_vsi *vsi, struct ice_vsi_cfg_params *params)
goto unroll_vector_base;
ice_vsi_map_rings_to_vectors(vsi);
+
+ /* Associate q_vector rings to napi */
+ ice_vsi_set_napi_queues(vsi, true);
+
vsi->stat_offsets_loaded = false;
if (ice_is_xdp_ena_vsi(vsi)) {
@@ -2931,6 +2935,69 @@ void ice_vsi_dis_irq(struct ice_vsi *vsi)
synchronize_irq(vsi->q_vectors[i]->irq.virq);
}
+/**
+ * ice_queue_set_napi - Set the napi instance for the queue
+ * @dev: device to which NAPI and queue belong
+ * @queue_index: Index of queue
+ * @type: queue type as RX or TX
+ * @napi: NAPI context
+ * @locked: is the rtnl_lock already held
+ *
+ * Set the napi instance for the queue
+ */
+static void
+ice_queue_set_napi(struct net_device *dev, unsigned int queue_index,
+ enum netdev_queue_type type, struct napi_struct *napi,
+ bool locked)
+{
+ if (!locked)
+ rtnl_lock();
+ netif_queue_set_napi(dev, queue_index, type, napi);
+ if (!locked)
+ rtnl_unlock();
+}
+
+/**
+ * ice_q_vector_set_napi_queues - Map queue[s] associated with the napi
+ * @q_vector: q_vector pointer
+ * @locked: is the rtnl_lock already held
+ *
+ * Associate the q_vector napi with all the queue[s] on the vector
+ */
+void ice_q_vector_set_napi_queues(struct ice_q_vector *q_vector, bool locked)
+{
+ struct ice_rx_ring *rx_ring;
+ struct ice_tx_ring *tx_ring;
+
+ ice_for_each_rx_ring(rx_ring, q_vector->rx)
+ ice_queue_set_napi(q_vector->vsi->netdev, rx_ring->q_index,
+ NETDEV_QUEUE_TYPE_RX, &q_vector->napi,
+ locked);
+
+ ice_for_each_tx_ring(tx_ring, q_vector->tx)
+ ice_queue_set_napi(q_vector->vsi->netdev, tx_ring->q_index,
+ NETDEV_QUEUE_TYPE_TX, &q_vector->napi,
+ locked);
+}
+
+/**
+ * ice_vsi_set_napi_queues
+ * @vsi: VSI pointer
+ * @locked: is the rtnl_lock already held
+ *
+ * Associate queue[s] with napi for all vectors
+ */
+void ice_vsi_set_napi_queues(struct ice_vsi *vsi, bool locked)
+{
+ int i;
+
+ if (!vsi->netdev)
+ return;
+
+ ice_for_each_q_vector(vsi, i)
+ ice_q_vector_set_napi_queues(vsi->q_vectors[i], locked);
+}
+
/**
* ice_vsi_release - Delete a VSI and free its resources
* @vsi: the VSI being removed
diff --git a/drivers/net/ethernet/intel/ice/ice_lib.h b/drivers/net/ethernet/intel/ice/ice_lib.h
index f24f5d1e6f9c..71bd27244941 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.h
+++ b/drivers/net/ethernet/intel/ice/ice_lib.h
@@ -91,6 +91,10 @@ void ice_vsi_cfg_netdev_tc(struct ice_vsi *vsi, u8 ena_tc);
struct ice_vsi *
ice_vsi_setup(struct ice_pf *pf, struct ice_vsi_cfg_params *params);
+void ice_q_vector_set_napi_queues(struct ice_q_vector *q_vector, bool locked);
+
+void ice_vsi_set_napi_queues(struct ice_vsi *vsi, bool locked);
+
int ice_vsi_release(struct ice_vsi *vsi);
void ice_vsi_close(struct ice_vsi *vsi);
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 43ba3e55b8c1..9e3d3919307b 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -3375,9 +3375,11 @@ static void ice_napi_add(struct ice_vsi *vsi)
if (!vsi->netdev)
return;
- ice_for_each_q_vector(vsi, v_idx)
+ ice_for_each_q_vector(vsi, v_idx) {
netif_napi_add(vsi->netdev, &vsi->q_vectors[v_idx]->napi,
ice_napi_poll);
+ ice_q_vector_set_napi_queues(vsi->q_vectors[v_idx], false);
+ }
}
/**
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