diff options
| -rw-r--r-- | drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c | 109 | ||||
| -rw-r--r-- | drivers/net/ethernet/meta/fbnic/fbnic_txrx.c | 6 | ||||
| -rw-r--r-- | drivers/net/ethernet/meta/fbnic/fbnic_txrx.h | 13 |
3 files changed, 126 insertions, 2 deletions
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c b/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c index c1477aad98a0..0a751a2aaf73 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_ethtool.c @@ -191,6 +191,113 @@ static int fbnic_set_coalesce(struct net_device *netdev, return 0; } +static void +fbnic_get_ringparam(struct net_device *netdev, struct ethtool_ringparam *ring, + struct kernel_ethtool_ringparam *kernel_ring, + struct netlink_ext_ack *extack) +{ + struct fbnic_net *fbn = netdev_priv(netdev); + + ring->rx_max_pending = FBNIC_QUEUE_SIZE_MAX; + ring->rx_mini_max_pending = FBNIC_QUEUE_SIZE_MAX; + ring->rx_jumbo_max_pending = FBNIC_QUEUE_SIZE_MAX; + ring->tx_max_pending = FBNIC_QUEUE_SIZE_MAX; + + ring->rx_pending = fbn->rcq_size; + ring->rx_mini_pending = fbn->hpq_size; + ring->rx_jumbo_pending = fbn->ppq_size; + ring->tx_pending = fbn->txq_size; +} + +static void fbnic_set_rings(struct fbnic_net *fbn, + struct ethtool_ringparam *ring) +{ + fbn->rcq_size = ring->rx_pending; + fbn->hpq_size = ring->rx_mini_pending; + fbn->ppq_size = ring->rx_jumbo_pending; + fbn->txq_size = ring->tx_pending; +} + +static int +fbnic_set_ringparam(struct net_device *netdev, struct ethtool_ringparam *ring, + struct kernel_ethtool_ringparam *kernel_ring, + struct netlink_ext_ack *extack) + +{ + struct fbnic_net *fbn = netdev_priv(netdev); + struct fbnic_net *clone; + int err; + + ring->rx_pending = roundup_pow_of_two(ring->rx_pending); + ring->rx_mini_pending = roundup_pow_of_two(ring->rx_mini_pending); + ring->rx_jumbo_pending = roundup_pow_of_two(ring->rx_jumbo_pending); + ring->tx_pending = roundup_pow_of_two(ring->tx_pending); + + /* These are absolute minimums allowing the device and driver to operate + * but not necessarily guarantee reasonable performance. Settings below + * Rx queue size of 128 and BDQs smaller than 64 are likely suboptimal + * at best. + */ + if (ring->rx_pending < max(FBNIC_QUEUE_SIZE_MIN, FBNIC_RX_DESC_MIN) || + ring->rx_mini_pending < FBNIC_QUEUE_SIZE_MIN || + ring->rx_jumbo_pending < FBNIC_QUEUE_SIZE_MIN || + ring->tx_pending < max(FBNIC_QUEUE_SIZE_MIN, FBNIC_TX_DESC_MIN)) { + NL_SET_ERR_MSG_MOD(extack, "requested ring size too small"); + return -EINVAL; + } + + if (!netif_running(netdev)) { + fbnic_set_rings(fbn, ring); + return 0; + } + + clone = fbnic_clone_create(fbn); + if (!clone) + return -ENOMEM; + + fbnic_set_rings(clone, ring); + + err = fbnic_alloc_napi_vectors(clone); + if (err) + goto err_free_clone; + + err = fbnic_alloc_resources(clone); + if (err) + goto err_free_napis; + + fbnic_down_noidle(fbn); + err = fbnic_wait_all_queues_idle(fbn->fbd, true); + if (err) + goto err_start_stack; + + err = fbnic_set_netif_queues(clone); + if (err) + goto err_start_stack; + + /* Nothing can fail past this point */ + fbnic_flush(fbn); + + fbnic_clone_swap(fbn, clone); + + fbnic_up(fbn); + + fbnic_free_resources(clone); + fbnic_free_napi_vectors(clone); + fbnic_clone_free(clone); + + return 0; + +err_start_stack: + fbnic_flush(fbn); + fbnic_up(fbn); + fbnic_free_resources(clone); +err_free_napis: + fbnic_free_napi_vectors(clone); +err_free_clone: + fbnic_clone_free(clone); + return err; +} + static void fbnic_get_strings(struct net_device *dev, u32 sset, u8 *data) { int i; @@ -1351,6 +1458,8 @@ static const struct ethtool_ops fbnic_ethtool_ops = { .get_regs = fbnic_get_regs, .get_coalesce = fbnic_get_coalesce, .set_coalesce = fbnic_set_coalesce, + .get_ringparam = fbnic_get_ringparam, + .set_ringparam = fbnic_set_ringparam, .get_strings = fbnic_get_strings, .get_ethtool_stats = fbnic_get_ethtool_stats, .get_sset_count = fbnic_get_sset_count, diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c b/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c index aba4c65974ee..ac11389a764c 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c +++ b/drivers/net/ethernet/meta/fbnic/fbnic_txrx.c @@ -1221,7 +1221,7 @@ void fbnic_aggregate_ring_rx_counters(struct fbnic_net *fbn, fbn->rx_stats.rx.csum_complete += stats->rx.csum_complete; fbn->rx_stats.rx.csum_none += stats->rx.csum_none; /* Remember to add new stats here */ - BUILD_BUG_ON(sizeof(fbn->tx_stats.rx) / 8 != 3); + BUILD_BUG_ON(sizeof(fbn->rx_stats.rx) / 8 != 3); } void fbnic_aggregate_ring_tx_counters(struct fbnic_net *fbn, @@ -1316,7 +1316,9 @@ static int fbnic_alloc_nv_page_pool(struct fbnic_net *fbn, .dev = nv->dev, .dma_dir = DMA_BIDIRECTIONAL, .offset = 0, - .max_len = PAGE_SIZE + .max_len = PAGE_SIZE, + .napi = &nv->napi, + .netdev = fbn->netdev, }; struct page_pool *pp; diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_txrx.h b/drivers/net/ethernet/meta/fbnic/fbnic_txrx.h index 54368dc22328..f46616af41ea 100644 --- a/drivers/net/ethernet/meta/fbnic/fbnic_txrx.h +++ b/drivers/net/ethernet/meta/fbnic/fbnic_txrx.h @@ -24,9 +24,22 @@ struct fbnic_net; #define FBNIC_TX_DESC_WAKEUP (FBNIC_MAX_SKB_DESC * 2) #define FBNIC_TX_DESC_MIN roundup_pow_of_two(FBNIC_TX_DESC_WAKEUP) +/* To receive the worst case packet we need: + * 1 descriptor for primary metadata + * + 1 descriptor for optional metadata + * + 1 descriptor for headers + * + 4 descriptors for payload + */ +#define FBNIC_MAX_RX_PKT_DESC 7 +#define FBNIC_RX_DESC_MIN roundup_pow_of_two(FBNIC_MAX_RX_PKT_DESC * 2) + #define FBNIC_MAX_TXQS 128u #define FBNIC_MAX_RXQS 128u +/* These apply to TWQs, TCQ, RCQ */ +#define FBNIC_QUEUE_SIZE_MIN 16u +#define FBNIC_QUEUE_SIZE_MAX SZ_64K + #define FBNIC_TXQ_SIZE_DEFAULT 1024 #define FBNIC_HPQ_SIZE_DEFAULT 256 #define FBNIC_PPQ_SIZE_DEFAULT 256 |