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Date: Thu, 7 Apr 2016 19:39:38 +0100
From: Jakub Kicinski <jakub.kicinski@...ronome.com>
To: netdev@...r.kernel.org
Cc: Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: [PATCH v5 net-next 05/15] nfp: allocate ring SW structs dynamically
To be able to switch rings more easily on config changes
allocate them dynamically, separately from nfp_net structure.
Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
---
drivers/net/ethernet/netronome/nfp/nfp_net.h | 6 ++---
.../net/ethernet/netronome/nfp/nfp_net_common.c | 28 +++++++++++++++++-----
.../net/ethernet/netronome/nfp/nfp_net_debugfs.c | 20 +++++++++-------
3 files changed, 37 insertions(+), 17 deletions(-)
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net.h b/drivers/net/ethernet/netronome/nfp/nfp_net.h
index 75683fb26734..fc005c982b7d 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net.h
@@ -472,6 +472,9 @@ struct nfp_net {
u32 rx_offset;
+ struct nfp_net_tx_ring *tx_rings;
+ struct nfp_net_rx_ring *rx_rings;
+
#ifdef CONFIG_PCI_IOV
unsigned int num_vfs;
struct vf_data_storage *vfinfo;
@@ -504,9 +507,6 @@ struct nfp_net {
int txd_cnt;
int rxd_cnt;
- struct nfp_net_tx_ring tx_rings[NFP_NET_MAX_TX_RINGS];
- struct nfp_net_rx_ring rx_rings[NFP_NET_MAX_RX_RINGS];
-
u8 num_irqs;
u8 num_r_vecs;
struct nfp_net_r_vector r_vecs[NFP_NET_MAX_TX_RINGS];
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
index 7cd20fcd631a..66fab7162b7c 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c
@@ -413,12 +413,6 @@ static void nfp_net_irqs_assign(struct net_device *netdev)
r_vec->irq_idx = NFP_NET_NON_Q_VECTORS + r;
cpumask_set_cpu(r, &r_vec->affinity_mask);
-
- r_vec->tx_ring = &nn->tx_rings[r];
- nfp_net_tx_ring_init(r_vec->tx_ring, r_vec, r);
-
- r_vec->rx_ring = &nn->rx_rings[r];
- nfp_net_rx_ring_init(r_vec->rx_ring, r_vec, r);
}
}
@@ -1503,6 +1497,12 @@ nfp_net_prepare_vector(struct nfp_net *nn, struct nfp_net_r_vector *r_vec,
struct msix_entry *entry = &nn->irq_entries[r_vec->irq_idx];
int err;
+ r_vec->tx_ring = &nn->tx_rings[idx];
+ nfp_net_tx_ring_init(r_vec->tx_ring, r_vec, idx);
+
+ r_vec->rx_ring = &nn->rx_rings[idx];
+ nfp_net_rx_ring_init(r_vec->rx_ring, r_vec, idx);
+
snprintf(r_vec->name, sizeof(r_vec->name),
"%s-rxtx-%d", nn->netdev->name, idx);
err = request_irq(entry->vector, r_vec->handler, 0, r_vec->name, r_vec);
@@ -1693,6 +1693,15 @@ static int nfp_net_netdev_open(struct net_device *netdev)
goto err_free_exn;
disable_irq(nn->irq_entries[NFP_NET_CFG_LSC].vector);
+ nn->rx_rings = kcalloc(nn->num_rx_rings, sizeof(*nn->rx_rings),
+ GFP_KERNEL);
+ if (!nn->rx_rings)
+ goto err_free_lsc;
+ nn->tx_rings = kcalloc(nn->num_tx_rings, sizeof(*nn->tx_rings),
+ GFP_KERNEL);
+ if (!nn->tx_rings)
+ 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)
@@ -1807,6 +1816,10 @@ err_free_tx_ring_p:
err_cleanup_vec_p:
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);
@@ -1852,6 +1865,9 @@ static int nfp_net_netdev_close(struct net_device *netdev)
nfp_net_cleanup_vector(nn, &nn->r_vecs[r]);
}
+ kfree(nn->rx_rings);
+ kfree(nn->tx_rings);
+
nfp_net_aux_irq_free(nn, NFP_NET_CFG_LSC, NFP_NET_IRQ_LSC_IDX);
nfp_net_aux_irq_free(nn, NFP_NET_CFG_EXN, NFP_NET_IRQ_EXN_IDX);
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_debugfs.c b/drivers/net/ethernet/netronome/nfp/nfp_net_debugfs.c
index 4c97c713121c..f86a1f13d27b 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_net_debugfs.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_debugfs.c
@@ -40,8 +40,9 @@ static struct dentry *nfp_dir;
static int nfp_net_debugfs_rx_q_read(struct seq_file *file, void *data)
{
- struct nfp_net_rx_ring *rx_ring = file->private;
int fl_rd_p, fl_wr_p, rx_rd_p, rx_wr_p, rxd_cnt;
+ struct nfp_net_r_vector *r_vec = file->private;
+ struct nfp_net_rx_ring *rx_ring;
struct nfp_net_rx_desc *rxd;
struct sk_buff *skb;
struct nfp_net *nn;
@@ -49,9 +50,10 @@ static int nfp_net_debugfs_rx_q_read(struct seq_file *file, void *data)
rtnl_lock();
- if (!rx_ring->r_vec || !rx_ring->r_vec->nfp_net)
+ if (!r_vec->nfp_net || !r_vec->rx_ring)
goto out;
- nn = rx_ring->r_vec->nfp_net;
+ nn = r_vec->nfp_net;
+ rx_ring = r_vec->rx_ring;
if (!netif_running(nn->netdev))
goto out;
@@ -115,7 +117,8 @@ static const struct file_operations nfp_rx_q_fops = {
static int nfp_net_debugfs_tx_q_read(struct seq_file *file, void *data)
{
- struct nfp_net_tx_ring *tx_ring = file->private;
+ struct nfp_net_r_vector *r_vec = file->private;
+ struct nfp_net_tx_ring *tx_ring;
struct nfp_net_tx_desc *txd;
int d_rd_p, d_wr_p, txd_cnt;
struct sk_buff *skb;
@@ -124,9 +127,10 @@ static int nfp_net_debugfs_tx_q_read(struct seq_file *file, void *data)
rtnl_lock();
- if (!tx_ring->r_vec || !tx_ring->r_vec->nfp_net)
+ if (!r_vec->nfp_net || !r_vec->tx_ring)
goto out;
- nn = tx_ring->r_vec->nfp_net;
+ nn = r_vec->nfp_net;
+ tx_ring = r_vec->tx_ring;
if (!netif_running(nn->netdev))
goto out;
@@ -207,13 +211,13 @@ void nfp_net_debugfs_adapter_add(struct nfp_net *nn)
for (i = 0; i < nn->num_rx_rings; i++) {
sprintf(int_name, "%d", i);
debugfs_create_file(int_name, S_IRUSR, rx,
- &nn->rx_rings[i], &nfp_rx_q_fops);
+ &nn->r_vecs[i], &nfp_rx_q_fops);
}
for (i = 0; i < nn->num_tx_rings; i++) {
sprintf(int_name, "%d", i);
debugfs_create_file(int_name, S_IRUSR, tx,
- &nn->tx_rings[i], &nfp_tx_q_fops);
+ &nn->r_vecs[i], &nfp_tx_q_fops);
}
}
--
1.9.1
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