diff options
Diffstat (limited to 'drivers/net/ethernet/google/gve/gve_tx.c')
| -rw-r--r-- | drivers/net/ethernet/google/gve/gve_tx.c | 82 |
1 files changed, 52 insertions, 30 deletions
diff --git a/drivers/net/ethernet/google/gve/gve_tx.c b/drivers/net/ethernet/google/gve/gve_tx.c index 4b9853adc113..4350ebd9c2bd 100644 --- a/drivers/net/ethernet/google/gve/gve_tx.c +++ b/drivers/net/ethernet/google/gve/gve_tx.c @@ -158,15 +158,16 @@ static int gve_clean_xdp_done(struct gve_priv *priv, struct gve_tx_ring *tx, u32 to_do) { struct gve_tx_buffer_state *info; - u32 clean_end = tx->done + to_do; u64 pkts = 0, bytes = 0; size_t space_freed = 0; u32 xsk_complete = 0; u32 idx; + int i; - for (; tx->done < clean_end; tx->done++) { + for (i = 0; i < to_do; i++) { idx = tx->done & tx->mask; info = &tx->info[idx]; + tx->done++; if (unlikely(!info->xdp.size)) continue; @@ -205,7 +206,10 @@ void gve_tx_stop_ring_gqi(struct gve_priv *priv, int idx) return; gve_remove_napi(priv, ntfy_idx); - gve_clean_tx_done(priv, tx, priv->tx_desc_cnt, false); + if (tx->q_num < priv->tx_cfg.num_queues) + gve_clean_tx_done(priv, tx, priv->tx_desc_cnt, false); + else + gve_clean_xdp_done(priv, tx, priv->tx_desc_cnt); netdev_tx_reset_queue(tx->netdev_txq); gve_tx_remove_from_block(priv, idx); } @@ -216,6 +220,7 @@ static void gve_tx_free_ring_gqi(struct gve_priv *priv, struct gve_tx_ring *tx, struct device *hdev = &priv->pdev->dev; int idx = tx->q_num; size_t bytes; + u32 qpl_id; u32 slots; slots = tx->mask + 1; @@ -223,9 +228,12 @@ static void gve_tx_free_ring_gqi(struct gve_priv *priv, struct gve_tx_ring *tx, tx->q_resources, tx->q_resources_bus); tx->q_resources = NULL; - if (!tx->raw_addressing) { - gve_tx_fifo_release(priv, &tx->tx_fifo); - gve_unassign_qpl(cfg->qpl_cfg, tx->tx_fifo.qpl->id); + if (tx->tx_fifo.qpl) { + if (tx->tx_fifo.base) + gve_tx_fifo_release(priv, &tx->tx_fifo); + + qpl_id = gve_tx_qpl_id(priv, tx->q_num); + gve_free_queue_page_list(priv, tx->tx_fifo.qpl, qpl_id); tx->tx_fifo.qpl = NULL; } @@ -256,6 +264,8 @@ static int gve_tx_alloc_ring_gqi(struct gve_priv *priv, int idx) { struct device *hdev = &priv->pdev->dev; + int qpl_page_cnt; + u32 qpl_id = 0; size_t bytes; /* Make sure everything is zeroed to start */ @@ -280,9 +290,14 @@ static int gve_tx_alloc_ring_gqi(struct gve_priv *priv, tx->raw_addressing = cfg->raw_addressing; tx->dev = hdev; if (!tx->raw_addressing) { - tx->tx_fifo.qpl = gve_assign_tx_qpl(cfg, idx); + qpl_id = gve_tx_qpl_id(priv, tx->q_num); + qpl_page_cnt = priv->tx_pages_per_qpl; + + tx->tx_fifo.qpl = gve_alloc_queue_page_list(priv, qpl_id, + qpl_page_cnt); if (!tx->tx_fifo.qpl) goto abort_with_desc; + /* map Tx FIFO */ if (gve_tx_fifo_init(priv, &tx->tx_fifo)) goto abort_with_qpl; @@ -302,8 +317,10 @@ abort_with_fifo: if (!tx->raw_addressing) gve_tx_fifo_release(priv, &tx->tx_fifo); abort_with_qpl: - if (!tx->raw_addressing) - gve_unassign_qpl(cfg->qpl_cfg, tx->tx_fifo.qpl->id); + if (!tx->raw_addressing) { + gve_free_queue_page_list(priv, tx->tx_fifo.qpl, qpl_id); + tx->tx_fifo.qpl = NULL; + } abort_with_desc: dma_free_coherent(hdev, bytes, tx->desc, tx->bus); tx->desc = NULL; @@ -320,12 +337,6 @@ int gve_tx_alloc_rings_gqi(struct gve_priv *priv, int err = 0; int i, j; - if (!cfg->raw_addressing && !cfg->qpls) { - netif_err(priv, drv, priv->dev, - "Cannot alloc QPL ring before allocing QPLs\n"); - return -EINVAL; - } - if (cfg->start_idx + cfg->num_rings > cfg->qcfg->max_queues) { netif_err(priv, drv, priv->dev, "Cannot alloc more than the max num of Tx rings\n"); @@ -826,9 +837,12 @@ int gve_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames, struct gve_tx_ring *tx; int i, err = 0, qid; - if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) + if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK) || !priv->xdp_prog) return -EINVAL; + if (!gve_get_napi_enabled(priv)) + return -ENETDOWN; + qid = gve_xdp_tx_queue_id(priv, smp_processor_id() % priv->num_xdp_queues); @@ -967,33 +981,41 @@ out: return sent; } +int gve_xsk_tx_poll(struct gve_notify_block *rx_block, int budget) +{ + struct gve_rx_ring *rx = rx_block->rx; + struct gve_priv *priv = rx->gve; + struct gve_tx_ring *tx; + int sent = 0; + + tx = &priv->tx[gve_xdp_tx_queue_id(priv, rx->q_num)]; + if (tx->xsk_pool) { + sent = gve_xsk_tx(priv, tx, budget); + + u64_stats_update_begin(&tx->statss); + tx->xdp_xsk_sent += sent; + u64_stats_update_end(&tx->statss); + if (xsk_uses_need_wakeup(tx->xsk_pool)) + xsk_set_tx_need_wakeup(tx->xsk_pool); + } + + return sent; +} + bool gve_xdp_poll(struct gve_notify_block *block, int budget) { struct gve_priv *priv = block->priv; struct gve_tx_ring *tx = block->tx; u32 nic_done; - bool repoll; u32 to_do; /* Find out how much work there is to be done */ nic_done = gve_tx_load_event_counter(priv, tx); to_do = min_t(u32, (nic_done - tx->done), budget); gve_clean_xdp_done(priv, tx, to_do); - repoll = nic_done != tx->done; - - if (tx->xsk_pool) { - int sent = gve_xsk_tx(priv, tx, budget); - - u64_stats_update_begin(&tx->statss); - tx->xdp_xsk_sent += sent; - u64_stats_update_end(&tx->statss); - repoll |= (sent == budget); - if (xsk_uses_need_wakeup(tx->xsk_pool)) - xsk_set_tx_need_wakeup(tx->xsk_pool); - } /* If we still have work we want to repoll */ - return repoll; + return nic_done != tx->done; } bool gve_tx_poll(struct gve_notify_block *block, int budget) |