diff options
| author | Jakub Kicinski | 2016-11-03 18:12:07 +0100 |
|---|---|---|
| committer | David S. Miller | 2016-11-04 19:56:16 +0100 |
| commit | ecd63a0217d5f1e8a92f7516f5586d1177b95de2 (patch) | |
| tree | 0a1cfbfedfc914e12cd14196fd71c2ad01716033 /drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c | |
| parent | debugfs: constify argument to debugfs_real_fops() (diff) | |
| download | kernel-qcow2-linux-ecd63a0217d5f1e8a92f7516f5586d1177b95de2.tar.gz kernel-qcow2-linux-ecd63a0217d5f1e8a92f7516f5586d1177b95de2.tar.xz kernel-qcow2-linux-ecd63a0217d5f1e8a92f7516f5586d1177b95de2.zip | |
nfp: add XDP support in the driver
Add XDP support. Separate stack's and XDP's TX rings logically.
Add functions for handling XDP_TX and cleanup of XDP's TX rings.
For XDP allocate all RX buffers as separate pages and map them
with DMA_BIDIRECTIONAL.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c index b87f1b73f200..1b26e9646574 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c @@ -176,7 +176,8 @@ static int nfp_net_set_ring_size(struct nfp_net *nn, u32 rxd_cnt, u32 txd_cnt) if (nn->txd_cnt != txd_cnt) reconfig_tx = &tx; - return nfp_net_ring_reconfig(nn, reconfig_rx, reconfig_tx); + return nfp_net_ring_reconfig(nn, &nn->xdp_prog, + reconfig_rx, reconfig_tx); } static int nfp_net_set_ringparam(struct net_device *netdev, @@ -639,14 +640,19 @@ static void nfp_net_get_channels(struct net_device *netdev, struct ethtool_channels *channel) { struct nfp_net *nn = netdev_priv(netdev); + unsigned int num_tx_rings; + + num_tx_rings = nn->num_tx_rings; + if (nn->xdp_prog) + num_tx_rings -= nn->num_rx_rings; channel->max_rx = min(nn->max_rx_rings, nn->max_r_vecs); channel->max_tx = min(nn->max_tx_rings, nn->max_r_vecs); channel->max_combined = min(channel->max_rx, channel->max_tx); channel->max_other = NFP_NET_NON_Q_VECTORS; - channel->combined_count = min(nn->num_rx_rings, nn->num_tx_rings); + channel->combined_count = min(nn->num_rx_rings, num_tx_rings); channel->rx_count = nn->num_rx_rings - channel->combined_count; - channel->tx_count = nn->num_tx_rings - channel->combined_count; + channel->tx_count = num_tx_rings - channel->combined_count; channel->other_count = NFP_NET_NON_Q_VECTORS; } @@ -666,10 +672,16 @@ static int nfp_net_set_num_rings(struct nfp_net *nn, unsigned int total_rx, if (nn->num_rx_rings != total_rx) reconfig_rx = ℞ - if (nn->num_tx_rings != total_tx) + if (nn->num_stack_tx_rings != total_tx || + (nn->xdp_prog && reconfig_rx)) reconfig_tx = &tx; - return nfp_net_ring_reconfig(nn, reconfig_rx, reconfig_tx); + /* nfp_net_check_config() will catch tx.n_rings > nn->max_tx_rings */ + if (nn->xdp_prog) + tx.n_rings += total_rx; + + return nfp_net_ring_reconfig(nn, &nn->xdp_prog, + reconfig_rx, reconfig_tx); } static int nfp_net_set_channels(struct net_device *netdev, |