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Message-ID: <20240306232959.17316-10-shannon.nelson@amd.com>
Date: Wed, 6 Mar 2024 15:29:54 -0800
From: Shannon Nelson <shannon.nelson@....com>
To: <netdev@...r.kernel.org>, <davem@...emloft.net>, <kuba@...nel.org>,
<edumazet@...gle.com>, <pabeni@...hat.com>
CC: <brett.creeley@....com>, <drivers@...sando.io>, Shannon Nelson
<shannon.nelson@....com>
Subject: [PATCH net-next 09/14] ionic: carry idev in ionic_cq struct
Remove the idev field from ionic_queue, which saves us a
bit of space, and add it into ionic_cq where there's room
within some cacheline padding. Use this pointer rather
than doing a multi level reference from lif->ionic.
Suggested-by: Neel Patel <npatel2@....com>
Reviewed-by: Brett Creeley <brett.creeley@....com>
Signed-off-by: Shannon Nelson <shannon.nelson@....com>
---
.../net/ethernet/pensando/ionic/ionic_dev.c | 2 +-
.../net/ethernet/pensando/ionic/ionic_dev.h | 2 +-
.../net/ethernet/pensando/ionic/ionic_txrx.c | 21 ++++---------------
3 files changed, 6 insertions(+), 19 deletions(-)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.c b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
index 8c961689b768..874499337132 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
@@ -629,6 +629,7 @@ int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq,
cq->desc_size = desc_size;
cq->tail_idx = 0;
cq->done_color = 1;
+ cq->idev = &lif->ionic->idev;
return 0;
}
@@ -673,7 +674,6 @@ int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev,
return -EINVAL;
q->lif = lif;
- q->idev = idev;
q->index = index;
q->num_descs = num_descs;
q->desc_size = desc_size;
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.h b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
index e76db5647690..2a386e75571e 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.h
@@ -240,7 +240,6 @@ struct ionic_queue {
unsigned int max_sg_elems;
u64 features;
u64 drop;
- struct ionic_dev *idev;
unsigned int type;
unsigned int hw_index;
unsigned int hw_type;
@@ -296,6 +295,7 @@ struct ionic_cq {
unsigned int desc_size;
void *base;
dma_addr_t base_pa;
+ struct ionic_dev *idev;
} ____cacheline_aligned_in_smp;
struct ionic;
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c
index 269253d84ca7..af414707d614 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c
@@ -948,14 +948,9 @@ int ionic_tx_napi(struct napi_struct *napi, int budget)
{
struct ionic_qcq *qcq = napi_to_qcq(napi);
struct ionic_cq *cq = napi_to_cq(napi);
- struct ionic_dev *idev;
- struct ionic_lif *lif;
u32 work_done = 0;
u32 flags = 0;
- lif = cq->bound_q->lif;
- idev = &lif->ionic->idev;
-
work_done = ionic_tx_cq_service(cq, budget);
if (unlikely(!budget))
@@ -969,7 +964,7 @@ int ionic_tx_napi(struct napi_struct *napi, int budget)
if (work_done || flags) {
flags |= IONIC_INTR_CRED_RESET_COALESCE;
- ionic_intr_credits(idev->intr_ctrl,
+ ionic_intr_credits(cq->idev->intr_ctrl,
cq->bound_intr->index,
work_done, flags);
}
@@ -992,17 +987,12 @@ int ionic_rx_napi(struct napi_struct *napi, int budget)
{
struct ionic_qcq *qcq = napi_to_qcq(napi);
struct ionic_cq *cq = napi_to_cq(napi);
- struct ionic_dev *idev;
- struct ionic_lif *lif;
u32 work_done = 0;
u32 flags = 0;
if (unlikely(!budget))
return budget;
- lif = cq->bound_q->lif;
- idev = &lif->ionic->idev;
-
work_done = ionic_cq_service(cq, budget,
ionic_rx_service, NULL, NULL);
@@ -1017,7 +1007,7 @@ int ionic_rx_napi(struct napi_struct *napi, int budget)
if (work_done || flags) {
flags |= IONIC_INTR_CRED_RESET_COALESCE;
- ionic_intr_credits(idev->intr_ctrl,
+ ionic_intr_credits(cq->idev->intr_ctrl,
cq->bound_intr->index,
work_done, flags);
}
@@ -1034,7 +1024,6 @@ int ionic_txrx_napi(struct napi_struct *napi, int budget)
struct ionic_cq *rxcq = napi_to_cq(napi);
unsigned int qi = rxcq->bound_q->index;
struct ionic_qcq *txqcq;
- struct ionic_dev *idev;
struct ionic_lif *lif;
struct ionic_cq *txcq;
bool resched = false;
@@ -1043,7 +1032,6 @@ int ionic_txrx_napi(struct napi_struct *napi, int budget)
u32 flags = 0;
lif = rxcq->bound_q->lif;
- idev = &lif->ionic->idev;
txqcq = lif->txqcqs[qi];
txcq = &lif->txqcqs[qi]->cq;
@@ -1066,7 +1054,7 @@ int ionic_txrx_napi(struct napi_struct *napi, int budget)
if (rx_work_done || flags) {
flags |= IONIC_INTR_CRED_RESET_COALESCE;
- ionic_intr_credits(idev->intr_ctrl, rxcq->bound_intr->index,
+ ionic_intr_credits(rxcq->idev->intr_ctrl, rxcq->bound_intr->index,
tx_work_done + rx_work_done, flags);
}
@@ -1310,12 +1298,11 @@ unsigned int ionic_tx_cq_service(struct ionic_cq *cq, unsigned int work_to_do)
void ionic_tx_flush(struct ionic_cq *cq)
{
- struct ionic_dev *idev = &cq->lif->ionic->idev;
u32 work_done;
work_done = ionic_tx_cq_service(cq, cq->num_descs);
if (work_done)
- ionic_intr_credits(idev->intr_ctrl, cq->bound_intr->index,
+ ionic_intr_credits(cq->idev->intr_ctrl, cq->bound_intr->index,
work_done, IONIC_INTR_CRED_RESET_COALESCE);
}
--
2.17.1
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