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bnxt_en: Add completion ring pointer in TX and RX ring structures

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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@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2023-11-13 16:16:12 -08:00 committed by David S. Miller
parent d1eec61410
commit 7845b8dfc7
3 changed files with 19 additions and 25 deletions
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40
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View file

@ -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);

2
drivers/net/ethernet/broadcom/bnxt/bnxt.h
View file

@ -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;

2
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
View file

@ -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)