Implement support for qcfg provided rx page sizes. For that, implement the ndo_default_qcfg callback and validate the config on restart. Also, use the current config's value in bnxt_init_ring_struct to retain the correct size across resets.
Signed-off-by: Pavel Begunkov asml.silence@gmail.com --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 36 ++++++++++++++++++++++- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 1 + 2 files changed, 36 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 137e348d2b9c..3ffe4fe159d3 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -4325,6 +4325,7 @@ static void bnxt_init_ring_struct(struct bnxt *bp) struct bnxt_rx_ring_info *rxr; struct bnxt_tx_ring_info *txr; struct bnxt_ring_struct *ring; + struct netdev_rx_queue *rxq;
if (!bnapi) continue; @@ -4342,7 +4343,8 @@ static void bnxt_init_ring_struct(struct bnxt *bp) if (!rxr) goto skip_rx;
- rxr->rx_page_size = BNXT_RX_PAGE_SIZE; + rxq = __netif_get_rx_queue(bp->dev, i); + rxr->rx_page_size = rxq->qcfg.rx_page_size;
ring = &rxr->rx_ring_struct; rmem = &ring->ring_mem; @@ -15932,6 +15934,29 @@ static const struct netdev_stat_ops bnxt_stat_ops = { .get_base_stats = bnxt_get_base_stats, };
+static void bnxt_queue_default_qcfg(struct net_device *dev, + struct netdev_queue_config *qcfg) +{ + qcfg->rx_page_size = BNXT_RX_PAGE_SIZE; +} + +static int bnxt_validate_qcfg(struct bnxt *bp, struct netdev_queue_config *qcfg) +{ + /* Older chips need MSS calc so rx_page_size is not supported */ + if (!(bp->flags & BNXT_FLAG_CHIP_P5_PLUS) && + qcfg->rx_page_size != BNXT_RX_PAGE_SIZE) + return -EINVAL; + + if (!is_power_of_2(qcfg->rx_page_size)) + return -ERANGE; + + if (qcfg->rx_page_size < BNXT_RX_PAGE_SIZE || + qcfg->rx_page_size > BNXT_MAX_RX_PAGE_SIZE) + return -ERANGE; + + return 0; +} + static int bnxt_queue_mem_alloc(struct net_device *dev, struct netdev_queue_config *qcfg, void *qmem, int idx) @@ -15944,6 +15969,10 @@ static int bnxt_queue_mem_alloc(struct net_device *dev, if (!bp->rx_ring) return -ENETDOWN;
+ rc = bnxt_validate_qcfg(bp, qcfg); + if (rc < 0) + return rc; + rxr = &bp->rx_ring[idx]; clone = qmem; memcpy(clone, rxr, sizeof(*rxr)); @@ -15955,6 +15984,7 @@ static int bnxt_queue_mem_alloc(struct net_device *dev, clone->rx_sw_agg_prod = 0; clone->rx_next_cons = 0; clone->need_head_pool = false; + clone->rx_page_size = qcfg->rx_page_size;
rc = bnxt_alloc_rx_page_pool(bp, clone, rxr->page_pool->p.nid); if (rc) @@ -16081,6 +16111,8 @@ static void bnxt_copy_rx_ring(struct bnxt *bp, src_ring = &src->rx_agg_ring_struct; src_rmem = &src_ring->ring_mem;
+ dst->rx_page_size = src->rx_page_size; + WARN_ON(dst_rmem->nr_pages != src_rmem->nr_pages); WARN_ON(dst_rmem->page_size != src_rmem->page_size); WARN_ON(dst_rmem->flags != src_rmem->flags); @@ -16235,6 +16267,8 @@ static const struct netdev_queue_mgmt_ops bnxt_queue_mgmt_ops = { .ndo_queue_mem_free = bnxt_queue_mem_free, .ndo_queue_start = bnxt_queue_start, .ndo_queue_stop = bnxt_queue_stop, + .ndo_default_qcfg = bnxt_queue_default_qcfg, + .supported_params = QCFG_RX_PAGE_SIZE, };
static void bnxt_remove_one(struct pci_dev *pdev) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h index 4c880a9fba92..d245eefbbdda 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h @@ -760,6 +760,7 @@ struct nqe_cn { #endif
#define BNXT_RX_PAGE_SIZE (1 << BNXT_RX_PAGE_SHIFT) +#define BNXT_MAX_RX_PAGE_SIZE BIT(15)
#define BNXT_MAX_MTU 9500