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Date: Mon, 13 Nov 2023 16:16:12 -0800
From: Michael Chan <michael.chan@...adcom.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
gospo@...adcom.com,
Andy Gospodarek <andrew.gospodarek@...adcom.com>
Subject: [PATCH net-next v2 04/13] bnxt_en: Add completion ring pointer in TX and RX ring structures
>From the TX or RX ring structure, we need to find the corresponding
completion ring during initialization. On P5 chips, we use the MSIX/napi
entry to locate the completion ring because there is only one RX/TX
ring per MSIX. To allow multiple TX rings for each MSIX, we need
to add a direct pointer from the TX ring and RX ring structures.
This also simplifies the existing logic.
Reviewed-by: Andy Gospodarek <andrew.gospodarek@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 40 ++++++++-----------
drivers/net/ethernet/broadcom/bnxt/bnxt.h | 2 +
.../net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 2 +-
3 files changed, 19 insertions(+), 25 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 585120369935..11a85cb28517 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -3584,11 +3584,11 @@ static int bnxt_alloc_cp_sub_ring(struct bnxt *bp,
static int bnxt_alloc_cp_rings(struct bnxt *bp)
{
bool sh = !!(bp->flags & BNXT_FLAG_SHARED_RINGS);
- int i, rc, ulp_base_vec, ulp_msix;
+ int i, j, rc, ulp_base_vec, ulp_msix;
ulp_msix = bnxt_get_ulp_msix_num(bp);
ulp_base_vec = bnxt_get_ulp_msix_base(bp);
- for (i = 0; i < bp->cp_nr_rings; i++) {
+ for (i = 0, j = 0; i < bp->cp_nr_rings; i++) {
struct bnxt_napi *bnapi = bp->bnapi[i];
struct bnxt_cp_ring_info *cpr, *cpr2;
struct bnxt_ring_struct *ring;
@@ -3626,6 +3626,7 @@ static int bnxt_alloc_cp_rings(struct bnxt *bp)
if (rc)
return rc;
cpr2->bnapi = bnapi;
+ bp->rx_ring[i].rx_cpr = cpr2;
}
if ((sh && i < bp->tx_nr_rings) ||
(!sh && i >= bp->rx_nr_rings)) {
@@ -3634,6 +3635,7 @@ static int bnxt_alloc_cp_rings(struct bnxt *bp)
if (rc)
return rc;
cpr2->bnapi = bnapi;
+ bp->tx_ring[j++].tx_cpr = cpr2;
}
}
return 0;
@@ -4654,6 +4656,8 @@ static int bnxt_alloc_mem(struct bnxt *bp, bool irq_re_init)
BNXT_RMEM_RING_PTE_FLAG;
rxr->rx_agg_ring_struct.ring_mem.flags =
BNXT_RMEM_RING_PTE_FLAG;
+ } else {
+ rxr->rx_cpr = &bp->bnapi[i]->cp_ring;
}
rxr->bnapi = bp->bnapi[i];
bp->bnapi[i]->rx_ring = &bp->rx_ring[i];
@@ -4682,6 +4686,8 @@ static int bnxt_alloc_mem(struct bnxt *bp, bool irq_re_init)
if (bp->flags & BNXT_FLAG_CHIP_P5)
txr->tx_ring_struct.ring_mem.flags =
BNXT_RMEM_RING_PTE_FLAG;
+ else
+ txr->tx_cpr = &bp->bnapi[i]->cp_ring;
txr->bnapi = bp->bnapi[j];
bp->bnapi[j]->tx_ring = txr;
bp->tx_ring_map[i] = bp->tx_nr_rings_xdp + i;
@@ -5242,28 +5248,18 @@ static u16 bnxt_cp_ring_from_grp(struct bnxt *bp, struct bnxt_ring_struct *ring)
static u16 bnxt_cp_ring_for_rx(struct bnxt *bp, struct bnxt_rx_ring_info *rxr)
{
- if (bp->flags & BNXT_FLAG_CHIP_P5) {
- struct bnxt_napi *bnapi = rxr->bnapi;
- struct bnxt_cp_ring_info *cpr;
-
- cpr = &bnapi->cp_ring.cp_ring_arr[BNXT_RX_HDL];
- return cpr->cp_ring_struct.fw_ring_id;
- } else {
+ if (bp->flags & BNXT_FLAG_CHIP_P5)
+ return rxr->rx_cpr->cp_ring_struct.fw_ring_id;
+ else
return bnxt_cp_ring_from_grp(bp, &rxr->rx_ring_struct);
- }
}
static u16 bnxt_cp_ring_for_tx(struct bnxt *bp, struct bnxt_tx_ring_info *txr)
{
- if (bp->flags & BNXT_FLAG_CHIP_P5) {
- struct bnxt_napi *bnapi = txr->bnapi;
- struct bnxt_cp_ring_info *cpr;
-
- cpr = &bnapi->cp_ring.cp_ring_arr[BNXT_TX_HDL];
- return cpr->cp_ring_struct.fw_ring_id;
- } else {
+ if (bp->flags & BNXT_FLAG_CHIP_P5)
+ return txr->tx_cpr->cp_ring_struct.fw_ring_id;
+ else
return bnxt_cp_ring_from_grp(bp, &txr->tx_ring_struct);
- }
}
static int bnxt_alloc_rss_indir_tbl(struct bnxt *bp)
@@ -6022,12 +6018,10 @@ static int bnxt_hwrm_ring_alloc(struct bnxt *bp)
u32 map_idx;
if (bp->flags & BNXT_FLAG_CHIP_P5) {
+ struct bnxt_cp_ring_info *cpr2 = txr->tx_cpr;
struct bnxt_napi *bnapi = txr->bnapi;
- struct bnxt_cp_ring_info *cpr, *cpr2;
u32 type2 = HWRM_RING_ALLOC_CMPL;
- cpr = &bnapi->cp_ring;
- cpr2 = &cpr->cp_ring_arr[BNXT_TX_HDL];
ring = &cpr2->cp_ring_struct;
ring->handle = BNXT_TX_HDL;
map_idx = bnapi->index;
@@ -6062,11 +6056,9 @@ static int bnxt_hwrm_ring_alloc(struct bnxt *bp)
bnxt_db_write(bp, &rxr->rx_db, rxr->rx_prod);
bp->grp_info[map_idx].rx_fw_ring_id = ring->fw_ring_id;
if (bp->flags & BNXT_FLAG_CHIP_P5) {
- struct bnxt_cp_ring_info *cpr = &bnapi->cp_ring;
+ struct bnxt_cp_ring_info *cpr2 = rxr->rx_cpr;
u32 type2 = HWRM_RING_ALLOC_CMPL;
- struct bnxt_cp_ring_info *cpr2;
- cpr2 = &cpr->cp_ring_arr[BNXT_RX_HDL];
ring = &cpr2->cp_ring_struct;
ring->handle = BNXT_RX_HDL;
rc = hwrm_ring_alloc_send_msg(bp, ring, type2, map_idx);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 429df1cf4a6a..c04089e7ac39 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -806,6 +806,7 @@ struct bnxt_db_info {
struct bnxt_tx_ring_info {
struct bnxt_napi *bnapi;
+ struct bnxt_cp_ring_info *tx_cpr;
u16 tx_prod;
u16 tx_cons;
u16 tx_hw_cons;
@@ -916,6 +917,7 @@ struct bnxt_tpa_idx_map {
struct bnxt_rx_ring_info {
struct bnxt_napi *bnapi;
+ struct bnxt_cp_ring_info *rx_cpr;
u16 rx_prod;
u16 rx_agg_prod;
u16 rx_sw_agg_prod;
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
index 675e37700289..18c06158fead 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
@@ -3941,7 +3941,7 @@ static int bnxt_run_loopback(struct bnxt *bp)
cpr = &rxr->bnapi->cp_ring;
if (bp->flags & BNXT_FLAG_CHIP_P5)
- cpr = &cpr->cp_ring_arr[BNXT_RX_HDL];
+ cpr = rxr->rx_cpr;
pkt_size = min(bp->dev->mtu + ETH_HLEN, bp->rx_copy_thresh);
skb = netdev_alloc_skb(bp->dev, pkt_size);
if (!skb)
--
2.30.1
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