diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_xsk.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_xsk.c | 129 |
1 files changed, 16 insertions, 113 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_xsk.c b/drivers/net/ethernet/intel/i40e/i40e_xsk.c index 870cf654e436..b5c182e688e3 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_xsk.c +++ b/drivers/net/ethernet/intel/i40e/i40e_xsk.c @@ -10,69 +10,6 @@ #include "i40e_xsk.h" /** - * i40e_alloc_xsk_umems - Allocate an array to store per ring UMEMs - * @vsi: Current VSI - * - * Returns 0 on success, <0 on failure - **/ -static int i40e_alloc_xsk_umems(struct i40e_vsi *vsi) -{ - if (vsi->xsk_umems) - return 0; - - vsi->num_xsk_umems_used = 0; - vsi->num_xsk_umems = vsi->alloc_queue_pairs; - vsi->xsk_umems = kcalloc(vsi->num_xsk_umems, sizeof(*vsi->xsk_umems), - GFP_KERNEL); - if (!vsi->xsk_umems) { - vsi->num_xsk_umems = 0; - return -ENOMEM; - } - - return 0; -} - -/** - * i40e_add_xsk_umem - Store a UMEM for a certain ring/qid - * @vsi: Current VSI - * @umem: UMEM to store - * @qid: Ring/qid to associate with the UMEM - * - * Returns 0 on success, <0 on failure - **/ -static int i40e_add_xsk_umem(struct i40e_vsi *vsi, struct xdp_umem *umem, - u16 qid) -{ - int err; - - err = i40e_alloc_xsk_umems(vsi); - if (err) - return err; - - vsi->xsk_umems[qid] = umem; - vsi->num_xsk_umems_used++; - - return 0; -} - -/** - * i40e_remove_xsk_umem - Remove a UMEM for a certain ring/qid - * @vsi: Current VSI - * @qid: Ring/qid associated with the UMEM - **/ -static void i40e_remove_xsk_umem(struct i40e_vsi *vsi, u16 qid) -{ - vsi->xsk_umems[qid] = NULL; - vsi->num_xsk_umems_used--; - - if (vsi->num_xsk_umems == 0) { - kfree(vsi->xsk_umems); - vsi->xsk_umems = NULL; - vsi->num_xsk_umems = 0; - } -} - -/** * i40e_xsk_umem_dma_map - DMA maps all UMEM memory for the netdev * @vsi: Current VSI * @umem: UMEM to DMA map @@ -140,6 +77,7 @@ static void i40e_xsk_umem_dma_unmap(struct i40e_vsi *vsi, struct xdp_umem *umem) static int i40e_xsk_umem_enable(struct i40e_vsi *vsi, struct xdp_umem *umem, u16 qid) { + struct net_device *netdev = vsi->netdev; struct xdp_umem_fq_reuse *reuseq; bool if_running; int err; @@ -150,12 +88,9 @@ static int i40e_xsk_umem_enable(struct i40e_vsi *vsi, struct xdp_umem *umem, if (qid >= vsi->num_queue_pairs) return -EINVAL; - if (vsi->xsk_umems) { - if (qid >= vsi->num_xsk_umems) - return -EINVAL; - if (vsi->xsk_umems[qid]) - return -EBUSY; - } + if (qid >= netdev->real_num_rx_queues || + qid >= netdev->real_num_tx_queues) + return -EINVAL; reuseq = xsk_reuseq_prepare(vsi->rx_rings[0]->count); if (!reuseq) @@ -173,16 +108,15 @@ static int i40e_xsk_umem_enable(struct i40e_vsi *vsi, struct xdp_umem *umem, err = i40e_queue_pair_disable(vsi, qid); if (err) return err; - } - err = i40e_add_xsk_umem(vsi, umem, qid); - if (err) - return err; - - if (if_running) { err = i40e_queue_pair_enable(vsi, qid); if (err) return err; + + /* Kick start the NAPI context so that receiving will start */ + err = i40e_xsk_async_xmit(vsi->netdev, qid); + if (err) + return err; } return 0; @@ -197,11 +131,13 @@ static int i40e_xsk_umem_enable(struct i40e_vsi *vsi, struct xdp_umem *umem, **/ static int i40e_xsk_umem_disable(struct i40e_vsi *vsi, u16 qid) { + struct net_device *netdev = vsi->netdev; + struct xdp_umem *umem; bool if_running; int err; - if (!vsi->xsk_umems || qid >= vsi->num_xsk_umems || - !vsi->xsk_umems[qid]) + umem = xdp_get_umem_from_qid(netdev, qid); + if (!umem) return -EINVAL; if_running = netif_running(vsi->netdev) && i40e_enabled_xdp_vsi(vsi); @@ -212,8 +148,7 @@ static int i40e_xsk_umem_disable(struct i40e_vsi *vsi, u16 qid) return err; } - i40e_xsk_umem_dma_unmap(vsi, vsi->xsk_umems[qid]); - i40e_remove_xsk_umem(vsi, qid); + i40e_xsk_umem_dma_unmap(vsi, umem); if (if_running) { err = i40e_queue_pair_enable(vsi, qid); @@ -225,36 +160,6 @@ static int i40e_xsk_umem_disable(struct i40e_vsi *vsi, u16 qid) } /** - * i40e_xsk_umem_query - Queries a certain ring/qid for its UMEM - * @vsi: Current VSI - * @umem: UMEM associated to the ring, if any - * @qid: Rx ring to associate UMEM to - * - * This function will store, if any, the UMEM associated to certain ring. - * - * Returns 0 on success, <0 on failure - **/ -int i40e_xsk_umem_query(struct i40e_vsi *vsi, struct xdp_umem **umem, - u16 qid) -{ - if (vsi->type != I40E_VSI_MAIN) - return -EINVAL; - - if (qid >= vsi->num_queue_pairs) - return -EINVAL; - - if (vsi->xsk_umems) { - if (qid >= vsi->num_xsk_umems) - return -EINVAL; - *umem = vsi->xsk_umems[qid]; - return 0; - } - - *umem = NULL; - return 0; -} - -/** * i40e_xsk_umem_setup - Enable/disassociate a UMEM to/from a ring/qid * @vsi: Current VSI * @umem: UMEM to enable/associate to a ring, or NULL to disable @@ -945,13 +850,11 @@ void i40e_xsk_clean_tx_ring(struct i40e_ring *tx_ring) **/ bool i40e_xsk_any_rx_ring_enabled(struct i40e_vsi *vsi) { + struct net_device *netdev = vsi->netdev; int i; - if (!vsi->xsk_umems) - return false; - for (i = 0; i < vsi->num_queue_pairs; i++) { - if (vsi->xsk_umems[i]) + if (xdp_get_umem_from_qid(netdev, i)) return true; } |