diff options
| author |   Maciej Fijalkowski <maciej.fijalkowski@intel.com> | 2022-04-13 17:30:14 +0200 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2022-04-15 21:11:13 +0200 |
| commit | 4efad196163f4302c5cdc020899074b174eaf956 (patch) | |
| tree | abc469706d1a9aeb9eebaaf08be3a04eadf05d18 /drivers/net/ethernet/intel/ice/ice_xsk.c | |
| parent | stmmac, xsk: Diversify return values from xsk_wakeup call paths (diff) | |
| download | wireguard-linux-4efad196163f4302c5cdc020899074b174eaf956.tar.xz wireguard-linux-4efad196163f4302c5cdc020899074b174eaf956.zip | |
ice, xsk: Avoid refilling single Rx descriptors
Call alloc Rx routine for ZC driver only when the amount of unallocated
descriptors exceeds given threshold.
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20220413153015.453864-14-maciej.fijalkowski@intel.com
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_xsk.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_xsk.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_xsk.c b/drivers/net/ethernet/intel/ice/ice_xsk.c index 53c299eebd99..c26b408ba419 100644 --- a/drivers/net/ethernet/intel/ice/ice_xsk.c +++ b/drivers/net/ethernet/intel/ice/ice_xsk.c @@ -587,6 +587,7 @@ int ice_clean_rx_irq_zc(struct ice_rx_ring *rx_ring, int budget) unsigned int xdp_xmit = 0; struct bpf_prog *xdp_prog; bool failure = false; + int entries_to_alloc; /* ZC patch is enabled only when XDP program is set, * so here it can not be NULL @@ -678,7 +679,9 @@ construct_skb: ice_receive_skb(rx_ring, skb, vlan_tag); } - failure |= !ice_alloc_rx_bufs_zc(rx_ring, ICE_DESC_UNUSED(rx_ring)); + entries_to_alloc = ICE_DESC_UNUSED(rx_ring); + if (entries_to_alloc > ICE_RING_QUARTER(rx_ring)) + failure |= !ice_alloc_rx_bufs_zc(rx_ring, entries_to_alloc); ice_finalize_xdp_rx(xdp_ring, xdp_xmit); ice_update_rx_ring_stats(rx_ring, total_rx_packets, total_rx_bytes); |