diff options
| author | Jakub Kicinski | 2017-05-29 02:53:04 +0200 |
|---|---|---|
| committer | David S. Miller | 2017-05-30 17:27:08 +0200 |
| commit | 9ed9ea7084f34fcb1d962a4fbd012fe8a2942df8 (patch) | |
| tree | 7c45bae9e25e441c4858a9d05eadda48c558a4b8 /drivers/net/ethernet/netronome/nfp/nfp_net_common.c | |
| parent | nfp: don't add ring size to index calculations (diff) | |
| download | kernel-qcow2-linux-9ed9ea7084f34fcb1d962a4fbd012fe8a2942df8.tar.gz kernel-qcow2-linux-9ed9ea7084f34fcb1d962a4fbd012fe8a2942df8.tar.xz kernel-qcow2-linux-9ed9ea7084f34fcb1d962a4fbd012fe8a2942df8.zip | |
nfp: don't keep count for free buffers delayed kick
We only kick RX free buffer queue controller every NFP_NET_FL_BATCH
(currently 16) entries. This means that we will always kick the QC
when write ring index is divisable by NFP_NET_FL_BATCH. There is
no need to keep counts.
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_common.c')
| -rw-r--r-- | drivers/net/ethernet/netronome/nfp/nfp_net_common.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c index 68013d048e9d..c9a140376621 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_common.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_common.c @@ -1212,14 +1212,12 @@ static void nfp_net_rx_give_one(const struct nfp_net_dp *dp, dma_addr + dp->rx_dma_off); rx_ring->wr_p++; - rx_ring->wr_ptr_add++; - if (rx_ring->wr_ptr_add >= NFP_NET_FL_BATCH) { + if (!(rx_ring->wr_p % NFP_NET_FL_BATCH)) { /* Update write pointer of the freelist queue. Make * sure all writes are flushed before telling the hardware. */ wmb(); - nfp_qcp_wr_ptr_add(rx_ring->qcp_fl, rx_ring->wr_ptr_add); - rx_ring->wr_ptr_add = 0; + nfp_qcp_wr_ptr_add(rx_ring->qcp_fl, NFP_NET_FL_BATCH); } } @@ -1245,7 +1243,6 @@ static void nfp_net_rx_ring_reset(struct nfp_net_rx_ring *rx_ring) memset(rx_ring->rxds, 0, sizeof(*rx_ring->rxds) * rx_ring->cnt); rx_ring->wr_p = 0; rx_ring->rd_p = 0; - rx_ring->wr_ptr_add = 0; } /** |