[PATCH net-next resend 04/13] nfp: reuse ring helpers on .ndo_open() path

[Jakub Kicinski]

Ring allocation helpers encapsulate all ring allocation and
initialization steps nicely.  Reuse them on .ndo_open() path.

Signed-off-by: Jakub Kicinski <jakub.kicin...@netronome.com>
---
 .../net/ethernet/netronome/nfp/nfp_net_common.c    | 60 ++++++++--------------
 1 file changed, 20 insertions(+), 40 deletions(-)

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c 
b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index b7b2851ebb6b..50aeaea9e318 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -2051,6 +2051,13 @@ static void nfp_net_open_stack(struct nfp_net *nn)
 static int nfp_net_netdev_open(struct net_device *netdev)
 {
        struct nfp_net *nn = netdev_priv(netdev);
+       struct nfp_net_ring_set rx = {
+               .mtu = nn->netdev->mtu,
+               .dcnt = nn->rxd_cnt,
+       };
+       struct nfp_net_ring_set tx = {
+               .dcnt = nn->txd_cnt,
+       };
        int err, r;
 
        if (nn->ctrl & NFP_NET_CFG_CTRL_ENABLE) {
@@ -2075,38 +2082,22 @@ static int nfp_net_netdev_open(struct net_device 
*netdev)
                goto err_free_exn;
        disable_irq(nn->irq_entries[NFP_NET_IRQ_LSC_IDX].vector);
 
-       nn->rx_rings = kcalloc(nn->num_rx_rings, sizeof(*nn->rx_rings),
-                              GFP_KERNEL);
-       if (!nn->rx_rings) {
-               err = -ENOMEM;
-               goto err_free_lsc;
-       }
-       nn->tx_rings = kcalloc(nn->num_tx_rings, sizeof(*nn->tx_rings),
-                              GFP_KERNEL);
-       if (!nn->tx_rings) {
-               err = -ENOMEM;
-               goto err_free_rx_rings;
-       }
-
        for (r = 0; r < nn->num_r_vecs; r++) {
                err = nfp_net_prepare_vector(nn, &nn->r_vecs[r], r);
                if (err)
                        goto err_cleanup_vec_p;
        }
-       for (r = 0; r < nn->num_tx_rings; r++) {
-               err = nfp_net_tx_ring_alloc(nn->r_vecs[r].tx_ring, nn->txd_cnt);
-               if (err)
-                       goto err_free_tx_ring_p;
+
+       nn->rx_rings = nfp_net_rx_ring_set_prepare(nn, &rx);
+       if (!nn->rx_rings) {
+               err = -ENOMEM;
+               goto err_cleanup_vec;
        }
-       for (r = 0; r < nn->num_rx_rings; r++) {
-               err = nfp_net_rx_ring_alloc(nn->r_vecs[r].rx_ring,
-                                           nn->fl_bufsz, nn->rxd_cnt);
-               if (err)
-                       goto err_flush_free_rx_ring_p;
 
-               err = nfp_net_rx_ring_bufs_alloc(nn, nn->r_vecs[r].rx_ring);
-               if (err)
-                       goto err_free_rx_ring_p;
+       nn->tx_rings = nfp_net_tx_ring_set_prepare(nn, &tx);
+       if (!nn->tx_rings) {
+               err = -ENOMEM;
+               goto err_free_rx_rings;
        }
 
        err = netif_set_real_num_tx_queues(netdev, nn->num_tx_rings);
@@ -2139,25 +2130,14 @@ static int nfp_net_netdev_open(struct net_device 
*netdev)
        return 0;
 
 err_free_rings:
-       r = nn->num_rx_rings;
-err_flush_free_rx_ring_p:
-       while (r--) {
-               nfp_net_rx_ring_bufs_free(nn, nn->r_vecs[r].rx_ring);
-err_free_rx_ring_p:
-               nfp_net_rx_ring_free(nn->r_vecs[r].rx_ring);
-       }
-       r = nn->num_tx_rings;
-err_free_tx_ring_p:
-       while (r--)
-               nfp_net_tx_ring_free(nn->r_vecs[r].tx_ring);
+       nfp_net_tx_ring_set_free(nn, &tx);
+err_free_rx_rings:
+       nfp_net_rx_ring_set_free(nn, &rx);
+err_cleanup_vec:
        r = nn->num_r_vecs;
 err_cleanup_vec_p:
        while (r--)
                nfp_net_cleanup_vector(nn, &nn->r_vecs[r]);
-       kfree(nn->tx_rings);
-err_free_rx_rings:
-       kfree(nn->rx_rings);
-err_free_lsc:
        nfp_net_aux_irq_free(nn, NFP_NET_CFG_LSC, NFP_NET_IRQ_LSC_IDX);
 err_free_exn:
        nfp_net_aux_irq_free(nn, NFP_NET_CFG_EXN, NFP_NET_IRQ_EXN_IDX);
-- 
1.9.1