diff options
Diffstat (limited to 'drivers/net/ethernet/intel/igc/igc_xdp.c')
| -rw-r--r-- | drivers/net/ethernet/intel/igc/igc_xdp.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/net/ethernet/intel/igc/igc_xdp.c b/drivers/net/ethernet/intel/igc/igc_xdp.c index e27af72aada8..c538e6b18aad 100644 --- a/drivers/net/ethernet/intel/igc/igc_xdp.c +++ b/drivers/net/ethernet/intel/igc/igc_xdp.c @@ -13,6 +13,8 @@ int igc_xdp_set_prog(struct igc_adapter *adapter, struct bpf_prog *prog, struct net_device *dev = adapter->netdev; bool if_running = netif_running(dev); struct bpf_prog *old_prog; + bool need_update; + unsigned int i; if (dev->mtu > ETH_DATA_LEN) { /* For now, the driver doesn't support XDP functionality with @@ -22,8 +24,14 @@ int igc_xdp_set_prog(struct igc_adapter *adapter, struct bpf_prog *prog, return -EOPNOTSUPP; } - if (if_running) - igc_close(dev); + need_update = !!adapter->xdp_prog != !!prog; + if (if_running && need_update) { + for (i = 0; i < adapter->num_rx_queues; i++) { + igc_disable_rx_ring(adapter->rx_ring[i]); + igc_disable_tx_ring(adapter->tx_ring[i]); + napi_disable(&adapter->rx_ring[i]->q_vector->napi); + } + } old_prog = xchg(&adapter->xdp_prog, prog); if (old_prog) @@ -34,8 +42,13 @@ int igc_xdp_set_prog(struct igc_adapter *adapter, struct bpf_prog *prog, else xdp_features_clear_redirect_target(dev); - if (if_running) - igc_open(dev); + if (if_running && need_update) { + for (i = 0; i < adapter->num_rx_queues; i++) { + napi_enable(&adapter->rx_ring[i]->q_vector->napi); + igc_enable_tx_ring(adapter->tx_ring[i]); + igc_enable_rx_ring(adapter->rx_ring[i]); + } + } return 0; } @@ -84,6 +97,7 @@ static int igc_xdp_enable_pool(struct igc_adapter *adapter, napi_disable(napi); } + igc_set_queue_napi(adapter, queue_id, NULL); set_bit(IGC_RING_FLAG_AF_XDP_ZC, &rx_ring->flags); set_bit(IGC_RING_FLAG_AF_XDP_ZC, &tx_ring->flags); @@ -133,6 +147,7 @@ static int igc_xdp_disable_pool(struct igc_adapter *adapter, u16 queue_id) xsk_pool_dma_unmap(pool, IGC_RX_DMA_ATTR); clear_bit(IGC_RING_FLAG_AF_XDP_ZC, &rx_ring->flags); clear_bit(IGC_RING_FLAG_AF_XDP_ZC, &tx_ring->flags); + igc_set_queue_napi(adapter, queue_id, napi); if (needs_reset) { napi_enable(napi); |