From a98cb2581211023539887a11f8391dd615409ab8 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Thu, 7 Apr 2016 19:39:47 +0100 Subject: [PATCH] nfp: pass ring count as function parameter Soon ring resize will call this functions with values different than the current configuration we need to explicitly pass the ring count as parameter. Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller --- .../ethernet/netronome/nfp/nfp_net_common.c | 23 +++++++++++-------- 1 file changed, 14 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c index e7c420fdcb0d..c4f0c70e77ce 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c @@ -1407,17 +1407,18 @@ static void nfp_net_tx_ring_free(struct nfp_net_tx_ring *tx_ring) /** * nfp_net_tx_ring_alloc() - Allocate resource for a TX ring * @tx_ring: TX Ring structure to allocate + * @cnt: Ring buffer count * * Return: 0 on success, negative errno otherwise. */ -static int nfp_net_tx_ring_alloc(struct nfp_net_tx_ring *tx_ring) +static int nfp_net_tx_ring_alloc(struct nfp_net_tx_ring *tx_ring, u32 cnt) { struct nfp_net_r_vector *r_vec = tx_ring->r_vec; struct nfp_net *nn = r_vec->nfp_net; struct pci_dev *pdev = nn->pdev; int sz; - tx_ring->cnt = nn->txd_cnt; + tx_ring->cnt = cnt; tx_ring->size = sizeof(*tx_ring->txds) * tx_ring->cnt; tx_ring->txds = dma_zalloc_coherent(&pdev->dev, tx_ring->size, @@ -1470,18 +1471,20 @@ static void nfp_net_rx_ring_free(struct nfp_net_rx_ring *rx_ring) * nfp_net_rx_ring_alloc() - Allocate resource for a RX ring * @rx_ring: RX ring to allocate * @fl_bufsz: Size of buffers to allocate + * @cnt: Ring buffer count * * Return: 0 on success, negative errno otherwise. */ static int -nfp_net_rx_ring_alloc(struct nfp_net_rx_ring *rx_ring, unsigned int fl_bufsz) +nfp_net_rx_ring_alloc(struct nfp_net_rx_ring *rx_ring, unsigned int fl_bufsz, + u32 cnt) { struct nfp_net_r_vector *r_vec = rx_ring->r_vec; struct nfp_net *nn = r_vec->nfp_net; struct pci_dev *pdev = nn->pdev; int sz; - rx_ring->cnt = nn->rxd_cnt; + rx_ring->cnt = cnt; rx_ring->bufsz = fl_bufsz; rx_ring->size = sizeof(*rx_ring->rxds) * rx_ring->cnt; @@ -1507,7 +1510,8 @@ err_alloc: } static struct nfp_net_rx_ring * -nfp_net_shadow_rx_rings_prepare(struct nfp_net *nn, unsigned int fl_bufsz) +nfp_net_shadow_rx_rings_prepare(struct nfp_net *nn, unsigned int fl_bufsz, + u32 buf_cnt) { struct nfp_net_rx_ring *rings; unsigned int r; @@ -1519,7 +1523,7 @@ nfp_net_shadow_rx_rings_prepare(struct nfp_net *nn, unsigned int fl_bufsz) for (r = 0; r < nn->num_rx_rings; r++) { nfp_net_rx_ring_init(&rings[r], nn->rx_rings[r].r_vec, r); - if (nfp_net_rx_ring_alloc(&rings[r], fl_bufsz)) + if (nfp_net_rx_ring_alloc(&rings[r], fl_bufsz, buf_cnt)) goto err_free_prev; if (nfp_net_rx_ring_bufs_alloc(nn, &rings[r])) @@ -1878,12 +1882,12 @@ static int nfp_net_netdev_open(struct net_device *netdev) if (err) goto err_free_prev_vecs; - err = nfp_net_tx_ring_alloc(nn->r_vecs[r].tx_ring); + err = nfp_net_tx_ring_alloc(nn->r_vecs[r].tx_ring, nn->txd_cnt); if (err) goto err_cleanup_vec_p; err = nfp_net_rx_ring_alloc(nn->r_vecs[r].rx_ring, - nn->fl_bufsz); + nn->fl_bufsz, nn->rxd_cnt); if (err) goto err_free_tx_ring_p; @@ -2063,7 +2067,8 @@ static int nfp_net_change_mtu(struct net_device *netdev, int new_mtu) } /* Prepare new rings */ - tmp_rings = nfp_net_shadow_rx_rings_prepare(nn, new_fl_bufsz); + tmp_rings = nfp_net_shadow_rx_rings_prepare(nn, new_fl_bufsz, + nn->rxd_cnt); if (!tmp_rings) return -ENOMEM; -- 2.30.2