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authorMaciej Fijalkowski <maciej.fijalkowski@intel.com>2022-04-13 17:30:14 +0200
committerDaniel Borkmann <daniel@iogearbox.net>2022-04-15 21:11:13 +0200
commit4efad196163f4302c5cdc020899074b174eaf956 (patch)
treeabc469706d1a9aeb9eebaaf08be3a04eadf05d18 /drivers/net/ethernet/intel/ice/ice_xsk.c
parenta817ead4154d86c74bf98936f3a385e8a21974ff (diff)
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.c5
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);