[PATCH 5.15 01/22] ionic: refactor use of ionic_rx_fill()

Greg Kroah-Hartman
2023-03-01T18:10:30Z

From: Neel Patel <neel@pensando.io>

[ Upstream commit e55f0f5befc26e2ba6bb8c1f945ea8e37ee0e334 ]

The same pre-work code is used before each call to
ionic_rx_fill(), so bring it in and make it a part of
the routine.

Signed-off-by: Neel Patel <neel@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../net/ethernet/pensando/ionic/ionic_txrx.c | 23 ++++++++++---------
1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c
index 37c39581b6599..376f97b4008bb 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_txrx.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_txrx.c
@@ -353,16 +353,25 @@ void ionic_rx_fill(struct ionic_queue *q)
struct ionic_rxq_sg_desc *sg_desc;
struct ionic_rxq_sg_elem *sg_elem;
struct ionic_buf_info *buf_info;
+ unsigned int fill_threshold;
struct ionic_rxq_desc *desc;
unsigned int remain_len;
unsigned int frag_len;
unsigned int nfrags;
+ unsigned int n_fill;
unsigned int i, j;
unsigned int len;

+ n_fill = ionic_q_space_avail(q);
+
+ fill_threshold = min_t(unsigned int, IONIC_RX_FILL_THRESHOLD,
+ q->num_descs / IONIC_RX_FILL_DIV);
+ if (n_fill < fill_threshold)
+ return;
+
len = netdev->mtu + ETH_HLEN + VLAN_HLEN;

- for (i = ionic_q_space_avail(q); i; i--) {
+ for (i = n_fill; i; i--) {
nfrags = 0;
remain_len = len;
desc_info = &q->info[q->head_idx];
@@ -518,7 +527,6 @@ int ionic_rx_napi(struct napi_struct *napi, int budget)
struct ionic_cq *cq = napi_to_cq(napi);
struct ionic_dev *idev;
struct ionic_lif *lif;
- u16 rx_fill_threshold;
u32 work_done = 0;
u32 flags = 0;

@@ -528,10 +536,7 @@ int ionic_rx_napi(struct napi_struct *napi, int budget)
work_done = ionic_cq_service(cq, budget,
ionic_rx_service, NULL, NULL);

- rx_fill_threshold = min_t(u16, IONIC_RX_FILL_THRESHOLD,
- cq->num_descs / IONIC_RX_FILL_DIV);
- if (work_done && ionic_q_space_avail(cq->bound_q) >= rx_fill_threshold)
- ionic_rx_fill(cq->bound_q);
+ ionic_rx_fill(cq->bound_q);

if (work_done < budget && napi_complete_done(napi, work_done)) {
ionic_dim_update(qcq, IONIC_LIF_F_RX_DIM_INTR);
@@ -559,7 +564,6 @@ int ionic_txrx_napi(struct napi_struct *napi, int budget)
struct ionic_dev *idev;
struct ionic_lif *lif;
struct ionic_cq *txcq;
- u16 rx_fill_threshold;
u32 rx_work_done = 0;
u32 tx_work_done = 0;
u32 flags = 0;
@@ -574,10 +578,7 @@ int ionic_txrx_napi(struct napi_struct *napi, int budget)
rx_work_done = ionic_cq_service(rxcq, budget,
ionic_rx_service, NULL, NULL);

- rx_fill_threshold = min_t(u16, IONIC_RX_FILL_THRESHOLD,
- rxcq->num_descs / IONIC_RX_FILL_DIV);
- if (rx_work_done && ionic_q_space_avail(rxcq->bound_q) >= rx_fill_threshold)
- ionic_rx_fill(rxcq->bound_q);
+ ionic_rx_fill(rxcq->bound_q);

if (rx_work_done < budget && napi_complete_done(napi, rx_work_done)) {
ionic_dim_update(qcq, 0);
--
2.39.0