From: Jason Xing <redacted>
Date: Mon, 25 Aug 2025 21:53:38 +0800
From: Jason Xing <kernelxing@tencent.com>
Support allocating and building skbs in batch.
[...]
+ base_len = max(NET_SKB_PAD, L1_CACHE_ALIGN(dev->needed_headroom));
+ if (!(dev->priv_flags & IFF_TX_SKB_NO_LINEAR))
+ base_len += dev->needed_tailroom;
+
+ if (xs->skb_count >= nb_pkts)
+ goto build;
+
+ if (xs->skb) {
+ i = 1;
+ xs->skb_count++;
+ }
+
+ xs->skb_count += kmem_cache_alloc_bulk(net_hotdata.skbuff_cache,
+ gfp_mask, nb_pkts - xs->skb_count,
+ (void **)&skbs[xs->skb_count]);
Have you tried napi_skb_cache_get_bulk()? Depending on the workload, it
may give better perf numbers.
+ if (xs->skb_count < nb_pkts)
+ nb_pkts = xs->skb_count;
Thanks,
Olek