From: Jason Xing <kernelxing@tencent.com>
Date: Tue, 18 Nov 2025 07:06:44 +0000 (+0800)
Subject: net: increase default NAPI_SKB_CACHE_BULK to 32
X-Git-Tag: v6.19-rc1~170^2~117^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=01d7385618992a9017198534870aec62f54f963a;p=thirdparty%2Fkernel%2Flinux.git

net: increase default NAPI_SKB_CACHE_BULK to 32

The previous value 16 is a bit conservative, so adjust it along with
NAPI_SKB_CACHE_SIZE, which can minimize triggering memory allocation
in napi_skb_cache_get*().

Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Link: https://patch.msgid.link/20251118070646.61344-3-kerneljasonxing@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index e4abf0e567767..b6fe7ab85c4a9 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -224,7 +224,7 @@ static void skb_under_panic(struct sk_buff *skb, unsigned int sz, void *addr)
 }
 
 #define NAPI_SKB_CACHE_SIZE	128
-#define NAPI_SKB_CACHE_BULK	16
+#define NAPI_SKB_CACHE_BULK	32
 #define NAPI_SKB_CACHE_HALF	(NAPI_SKB_CACHE_SIZE / 2)
 
 struct napi_alloc_cache {