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Message-Id: <20240603-net-2024-05-30-intel-net-fixes-v2-5-e3563aa89b0c@intel.com>
Date: Mon, 03 Jun 2024 14:42:34 -0700
From: Jacob Keller <jacob.e.keller@...el.com>
To: Jakub Kicinski <kuba@...nel.org>, netdev <netdev@...r.kernel.org>,
David Miller <davem@...emloft.net>
Cc: Jacob Keller <jacob.e.keller@...el.com>,
Larysa Zaremba <larysa.zaremba@...el.com>,
Przemek Kitszel <przemyslaw.kitszel@...el.com>,
Simon Horman <horms@...nel.org>,
Chandan Kumar Rout <chandanx.rout@...el.com>
Subject: [PATCH net v2 5/6] ice: map XDP queues to vectors in
ice_vsi_map_rings_to_vectors()
From: Larysa Zaremba <larysa.zaremba@...el.com>
ice_pf_dcb_recfg() re-maps queues to vectors with
ice_vsi_map_rings_to_vectors(), which does not restore the previous
state for XDP queues. This leads to no AF_XDP traffic after rebuild.
Map XDP queues to vectors in ice_vsi_map_rings_to_vectors().
Also, move the code around, so XDP queues are mapped independently only
through .ndo_bpf().
Fixes: 6624e780a577 ("ice: split ice_vsi_setup into smaller functions")
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Signed-off-by: Larysa Zaremba <larysa.zaremba@...el.com>
Reviewed-by: Simon Horman <horms@...nel.org>
Tested-by: Chandan Kumar Rout <chandanx.rout@...el.com>
Signed-off-by: Jacob Keller <jacob.e.keller@...el.com>
---
drivers/net/ethernet/intel/ice/ice.h | 1 +
drivers/net/ethernet/intel/ice/ice_base.c | 3 +
drivers/net/ethernet/intel/ice/ice_lib.c | 14 ++--
drivers/net/ethernet/intel/ice/ice_main.c | 128 +++++++++++++++++-------------
4 files changed, 84 insertions(+), 62 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index a5de6ef9c07e..99a75a59078e 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -940,6 +940,7 @@ int ice_vsi_determine_xdp_res(struct ice_vsi *vsi);
int ice_prepare_xdp_rings(struct ice_vsi *vsi, struct bpf_prog *prog,
enum ice_xdp_cfg cfg_type);
int ice_destroy_xdp_rings(struct ice_vsi *vsi, enum ice_xdp_cfg cfg_type);
+void ice_map_xdp_rings(struct ice_vsi *vsi);
int
ice_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames,
u32 flags);
diff --git a/drivers/net/ethernet/intel/ice/ice_base.c b/drivers/net/ethernet/intel/ice/ice_base.c
index 687f6cb2b917..5d396c1a7731 100644
--- a/drivers/net/ethernet/intel/ice/ice_base.c
+++ b/drivers/net/ethernet/intel/ice/ice_base.c
@@ -842,6 +842,9 @@ void ice_vsi_map_rings_to_vectors(struct ice_vsi *vsi)
}
rx_rings_rem -= rx_rings_per_v;
}
+
+ if (ice_is_xdp_ena_vsi(vsi))
+ ice_map_xdp_rings(vsi);
}
/**
diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
index dd8b374823ee..7629b0190578 100644
--- a/drivers/net/ethernet/intel/ice/ice_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
@@ -2274,13 +2274,6 @@ static int ice_vsi_cfg_def(struct ice_vsi *vsi)
if (ret)
goto unroll_vector_base;
- ice_vsi_map_rings_to_vectors(vsi);
-
- /* Associate q_vector rings to napi */
- ice_vsi_set_napi_queues(vsi);
-
- vsi->stat_offsets_loaded = false;
-
if (ice_is_xdp_ena_vsi(vsi)) {
ret = ice_vsi_determine_xdp_res(vsi);
if (ret)
@@ -2291,6 +2284,13 @@ static int ice_vsi_cfg_def(struct ice_vsi *vsi)
goto unroll_vector_base;
}
+ ice_vsi_map_rings_to_vectors(vsi);
+
+ /* Associate q_vector rings to napi */
+ ice_vsi_set_napi_queues(vsi);
+
+ vsi->stat_offsets_loaded = false;
+
/* ICE_VSI_CTRL does not need RSS so skip RSS processing */
if (vsi->type != ICE_VSI_CTRL)
/* Do not exit if configuring RSS had an issue, at
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 2a270aacd24a..1b61ca3a6eb6 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -2707,50 +2707,33 @@ static void ice_vsi_assign_bpf_prog(struct ice_vsi *vsi, struct bpf_prog *prog)
bpf_prog_put(old_prog);
}
-/**
- * ice_prepare_xdp_rings - Allocate, configure and setup Tx rings for XDP
- * @vsi: VSI to bring up Tx rings used by XDP
- * @prog: bpf program that will be assigned to VSI
- * @cfg_type: create from scratch or restore the existing configuration
- *
- * Return 0 on success and negative value on error
- */
-int ice_prepare_xdp_rings(struct ice_vsi *vsi, struct bpf_prog *prog,
- enum ice_xdp_cfg cfg_type)
+static struct ice_tx_ring *ice_xdp_ring_from_qid(struct ice_vsi *vsi, int qid)
{
- u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
- int xdp_rings_rem = vsi->num_xdp_txq;
- struct ice_pf *pf = vsi->back;
- struct ice_qs_cfg xdp_qs_cfg = {
- .qs_mutex = &pf->avail_q_mutex,
- .pf_map = pf->avail_txqs,
- .pf_map_size = pf->max_pf_txqs,
- .q_count = vsi->num_xdp_txq,
- .scatter_count = ICE_MAX_SCATTER_TXQS,
- .vsi_map = vsi->txq_map,
- .vsi_map_offset = vsi->alloc_txq,
- .mapping_mode = ICE_VSI_MAP_CONTIG
- };
- struct device *dev;
- int i, v_idx;
- int status;
-
- dev = ice_pf_to_dev(pf);
- vsi->xdp_rings = devm_kcalloc(dev, vsi->num_xdp_txq,
- sizeof(*vsi->xdp_rings), GFP_KERNEL);
- if (!vsi->xdp_rings)
- return -ENOMEM;
-
- vsi->xdp_mapping_mode = xdp_qs_cfg.mapping_mode;
- if (__ice_vsi_get_qs(&xdp_qs_cfg))
- goto err_map_xdp;
+ struct ice_q_vector *q_vector;
+ struct ice_tx_ring *ring;
if (static_key_enabled(&ice_xdp_locking_key))
- netdev_warn(vsi->netdev,
- "Could not allocate one XDP Tx ring per CPU, XDP_TX/XDP_REDIRECT actions will be slower\n");
+ return vsi->xdp_rings[qid % vsi->num_xdp_txq];
- if (ice_xdp_alloc_setup_rings(vsi))
- goto clear_xdp_rings;
+ q_vector = vsi->rx_rings[qid]->q_vector;
+ ice_for_each_tx_ring(ring, q_vector->tx)
+ if (ice_ring_is_xdp(ring))
+ return ring;
+
+ return NULL;
+}
+
+/**
+ * ice_map_xdp_rings - Map XDP rings to interrupt vectors
+ * @vsi: the VSI with XDP rings being configured
+ *
+ * Map XDP rings to interrupt vectors and perform the configuration steps
+ * dependent on the mapping.
+ */
+void ice_map_xdp_rings(struct ice_vsi *vsi)
+{
+ int xdp_rings_rem = vsi->num_xdp_txq;
+ int v_idx, q_idx;
/* follow the logic from ice_vsi_map_rings_to_vectors */
ice_for_each_q_vector(vsi, v_idx) {
@@ -2771,22 +2754,55 @@ int ice_prepare_xdp_rings(struct ice_vsi *vsi, struct bpf_prog *prog,
xdp_rings_rem -= xdp_rings_per_v;
}
- ice_for_each_rxq(vsi, i) {
- if (static_key_enabled(&ice_xdp_locking_key)) {
- vsi->rx_rings[i]->xdp_ring = vsi->xdp_rings[i % vsi->num_xdp_txq];
- } else {
- struct ice_q_vector *q_vector = vsi->rx_rings[i]->q_vector;
- struct ice_tx_ring *ring;
-
- ice_for_each_tx_ring(ring, q_vector->tx) {
- if (ice_ring_is_xdp(ring)) {
- vsi->rx_rings[i]->xdp_ring = ring;
- break;
- }
- }
- }
- ice_tx_xsk_pool(vsi, i);
+ ice_for_each_rxq(vsi, q_idx) {
+ vsi->rx_rings[q_idx]->xdp_ring = ice_xdp_ring_from_qid(vsi,
+ q_idx);
+ ice_tx_xsk_pool(vsi, q_idx);
}
+}
+
+/**
+ * ice_prepare_xdp_rings - Allocate, configure and setup Tx rings for XDP
+ * @vsi: VSI to bring up Tx rings used by XDP
+ * @prog: bpf program that will be assigned to VSI
+ * @cfg_type: create from scratch or restore the existing configuration
+ *
+ * Return 0 on success and negative value on error
+ */
+int ice_prepare_xdp_rings(struct ice_vsi *vsi, struct bpf_prog *prog,
+ enum ice_xdp_cfg cfg_type)
+{
+ u16 max_txqs[ICE_MAX_TRAFFIC_CLASS] = { 0 };
+ struct ice_pf *pf = vsi->back;
+ struct ice_qs_cfg xdp_qs_cfg = {
+ .qs_mutex = &pf->avail_q_mutex,
+ .pf_map = pf->avail_txqs,
+ .pf_map_size = pf->max_pf_txqs,
+ .q_count = vsi->num_xdp_txq,
+ .scatter_count = ICE_MAX_SCATTER_TXQS,
+ .vsi_map = vsi->txq_map,
+ .vsi_map_offset = vsi->alloc_txq,
+ .mapping_mode = ICE_VSI_MAP_CONTIG
+ };
+ struct device *dev;
+ int status, i;
+
+ dev = ice_pf_to_dev(pf);
+ vsi->xdp_rings = devm_kcalloc(dev, vsi->num_xdp_txq,
+ sizeof(*vsi->xdp_rings), GFP_KERNEL);
+ if (!vsi->xdp_rings)
+ return -ENOMEM;
+
+ vsi->xdp_mapping_mode = xdp_qs_cfg.mapping_mode;
+ if (__ice_vsi_get_qs(&xdp_qs_cfg))
+ goto err_map_xdp;
+
+ if (static_key_enabled(&ice_xdp_locking_key))
+ netdev_warn(vsi->netdev,
+ "Could not allocate one XDP Tx ring per CPU, XDP_TX/XDP_REDIRECT actions will be slower\n");
+
+ if (ice_xdp_alloc_setup_rings(vsi))
+ goto clear_xdp_rings;
/* omit the scheduler update if in reset path; XDP queues will be
* taken into account at the end of ice_vsi_rebuild, where
@@ -2795,6 +2811,8 @@ int ice_prepare_xdp_rings(struct ice_vsi *vsi, struct bpf_prog *prog,
if (cfg_type == ICE_XDP_CFG_PART)
return 0;
+ ice_map_xdp_rings(vsi);
+
/* tell the Tx scheduler that right now we have
* additional queues
*/
--
2.44.0.53.g0f9d4d28b7e6
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