net: move skb_mark_napi_id() into core networking stack

We would like to automatically provide busy polling support
to all NAPI drivers, without them having to implement anything.

skb_mark_napi_id() can be called from napi_gro_receive() and
napi_get_frags().

Few drivers are still calling skb_mark_napi_id() because
they use netif_receive_skb(). They should eventually call
napi_gro_receive() instead. I will leave this to drivers
maintainers.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
index 53ce122..8a9b493 100644 (file)
--- a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
@@ -2024,7 +2024,6 @@ read_again:
                skb->dev = netdev;
                skb->protocol = eth_type_trans(skb, netdev);
                skb_record_rx_queue(skb, channel->queue_index);
-               skb_mark_napi_id(skb, napi);
 
                napi_gro_receive(napi, skb);
 

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index ca208a7..ab92229 100644 (file)
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -1094,8 +1094,6 @@ reuse_rx:
                        __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
                                               le16_to_cpu(cqe_fp->vlan_tag));
 
-               skb_mark_napi_id(skb, &fp->napi);
-
                napi_gro_receive(&fp->napi, skb);
 next_rx:
                rx_buf->data = NULL;

diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index b7b93e7..f650f29 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -1864,7 +1864,6 @@ static void do_gro(struct sge_eth_rxq *rxq, const struct pkt_gl *gl,
        skb->truesize += skb->data_len;
        skb->ip_summed = CHECKSUM_UNNECESSARY;
        skb_record_rx_queue(skb, rxq->rspq.idx);
-       skb_mark_napi_id(skb, &rxq->rspq.napi);
        pi = netdev_priv(skb->dev);
        if (pi->rxtstamp)
                cxgb4_sgetim_to_hwtstamp(adapter, skb_hwtstamps(skb),

diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index b6ad029..c29d624 100644 (file)
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -2184,7 +2184,6 @@ static void be_rx_compl_process_gro(struct be_rx_obj *rxo,
                skb_set_hash(skb, rxcp->rss_hash, PKT_HASH_TYPE_L3);
 
        skb->csum_level = rxcp->tunneled;
-       skb_mark_napi_id(skb, napi);
 
        if (rxcp->vlanf)
                __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);

diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index 635b3ac..6649ce4 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -1632,7 +1632,6 @@ static int i40e_clean_rx_irq_ps(struct i40e_ring *rx_ring, int budget)
                        continue;
                }
 #endif
-               skb_mark_napi_id(skb, &rx_ring->q_vector->napi);
                i40e_receive_skb(rx_ring, skb, vlan_tag);
 
                rx_desc->wb.qword1.status_error_len = 0;

diff --git a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
index 47e9a90..77968b1 100644 (file)
--- a/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40evf/i40e_txrx.c
@@ -1090,7 +1090,6 @@ static int i40e_clean_rx_irq_ps(struct i40e_ring *rx_ring, int budget)
                        continue;
                }
 #endif
-               skb_mark_napi_id(skb, &rx_ring->q_vector->napi);
                i40e_receive_skb(rx_ring, skb, vlan_tag);
 
                rx_desc->wb.qword1.status_error_len = 0;

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 47395ff..4089d77 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -1659,6 +1659,7 @@ static void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring,
 static void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector,
                         struct sk_buff *skb)
 {
+       skb_mark_napi_id(skb, &q_vector->napi);
        if (ixgbe_qv_busy_polling(q_vector))
                netif_receive_skb(skb);
        else
@@ -2123,7 +2124,6 @@ static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
                }
 
 #endif /* IXGBE_FCOE */
-               skb_mark_napi_id(skb, &q_vector->napi);
                ixgbe_rx_skb(q_vector, skb);
 
                /* update budget accounting */

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index 1feead3..41440b2 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -925,7 +925,6 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
                                                PKT_HASH_TYPE_L3);
 
                        skb_record_rx_queue(gro_skb, cq->ring);
-                       skb_mark_napi_id(gro_skb, &cq->napi);
 
                        if (ring->hwtstamp_rx_filter == HWTSTAMP_FILTER_ALL) {
                                timestamp = mlx4_en_get_cqe_ts(cqe);
@@ -988,8 +987,6 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
                                               timestamp);
                }
 
-               skb_mark_napi_id(skb, &cq->napi);
-
                napi_gro_receive(&cq->napi, skb);
 next:
                for (nr = 0; nr < priv->num_frags; nr++)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
index fe752f8..7c8c408 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
@@ -243,7 +243,6 @@ int mlx5e_poll_rx_cq(struct mlx5e_cq *cq, int budget)
                wqe            = mlx5_wq_ll_get_wqe(&rq->wq, wqe_counter);
                skb            = rq->skb[wqe_counter];
                prefetch(skb->data);
-               skb_mark_napi_id(skb, cq->napi);
                rq->skb[wqe_counter] = NULL;
 
                dma_unmap_single(rq->pdev,

diff --git a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
index 83651ac..acf8661 100644 (file)
--- a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
+++ b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
@@ -1488,7 +1488,6 @@ myri10ge_rx_done(struct myri10ge_slice_state *ss, int len, __wsum csum)
        }
        myri10ge_vlan_rx(mgp->dev, va, skb);
        skb_record_rx_queue(skb, ss - &mgp->ss[0]);
-       skb_mark_napi_id(skb, &ss->napi);
 
        if (polling) {
                int hlen;
@@ -1506,6 +1505,7 @@ myri10ge_rx_done(struct myri10ge_slice_state *ss, int len, __wsum csum)
                skb->data_len -= hlen;
                skb->tail += hlen;
                skb->protocol = eth_type_trans(skb, dev);
+               skb_mark_napi_id(skb, &ss->napi);
                netif_receive_skb(skb);
        }
        else

diff --git a/drivers/net/ethernet/sfc/rx.c b/drivers/net/ethernet/sfc/rx.c
index 809ea46..8956995 100644 (file)
--- a/drivers/net/ethernet/sfc/rx.c
+++ b/drivers/net/ethernet/sfc/rx.c
@@ -463,7 +463,6 @@ efx_rx_packet_gro(struct efx_channel *channel, struct efx_rx_buffer *rx_buf,
 
        skb_record_rx_queue(skb, channel->rx_queue.core_index);
 
-       skb_mark_napi_id(skb, &channel->napi_str);
        gro_result = napi_gro_frags(napi);
        if (gro_result != GRO_DROP)
                channel->irq_mod_score += 2;

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index d8838de..d1d14ce 100644 (file)
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -516,8 +516,6 @@ static void receive_buf(struct virtnet_info *vi, struct receive_queue *rq,
                skb_shinfo(skb)->gso_segs = 0;
        }
 
-       skb_mark_napi_id(skb, &rq->napi);
-
        napi_gro_receive(&rq->napi, skb);
        return;
 

diff --git a/net/core/dev.c b/net/core/dev.c
index 9300961..83b4874 100644 (file)
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4356,6 +4356,7 @@ static gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb)
 
 gro_result_t napi_gro_receive(struct napi_struct *napi, struct sk_buff *skb)
 {
+       skb_mark_napi_id(skb, napi);
        trace_napi_gro_receive_entry(skb);
 
        skb_gro_reset_offset(skb);
@@ -4390,6 +4391,7 @@ struct sk_buff *napi_get_frags(struct napi_struct *napi)
        if (!skb) {
                skb = napi_alloc_skb(napi, GRO_MAX_HEAD);
                napi->skb = skb;
+               skb_mark_napi_id(skb, napi);
        }
        return skb;
 }