Commit c1550019 authored by Alexander Lobakin's avatar Alexander Lobakin Committed by Tony Nguyen

ixgbevf: switch to napi_build_skb()

napi_build_skb() reuses per-cpu NAPI skbuff_head cache in order
to save some cycles on freeing/allocating skbuff_heads on every
new Rx or completed Tx.
ixgbevf driver runs Tx completion polling cycle right before the Rx
one and uses napi_consume_skb() to feed the cache with skbuff_heads
of completed entries, so it's never empty and always warm at that
moment. Switch to the napi_build_skb() to relax mm pressure on
heavy Rx.
Signed-off-by: default avatarAlexander Lobakin <alexandr.lobakin@intel.com>
Reviewed-by: default avatarMichal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: default avatarKonrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
parent a3936336
...@@ -944,7 +944,7 @@ static struct sk_buff *ixgbevf_build_skb(struct ixgbevf_ring *rx_ring, ...@@ -944,7 +944,7 @@ static struct sk_buff *ixgbevf_build_skb(struct ixgbevf_ring *rx_ring,
net_prefetch(xdp->data_meta); net_prefetch(xdp->data_meta);
/* build an skb around the page buffer */ /* build an skb around the page buffer */
skb = build_skb(xdp->data_hard_start, truesize); skb = napi_build_skb(xdp->data_hard_start, truesize);
if (unlikely(!skb)) if (unlikely(!skb))
return NULL; return NULL;
......
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