netdev - [PATCH v3 net-next 02/14] net: init shinfo->gso_segs from qdisc_pkt_len

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Message-ID: <20251121083256.674562-3-edumazet@google.com>
Date: Fri, 21 Nov 2025 08:32:44 +0000
From: Eric Dumazet <edumazet@...gle.com>
To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
	Paolo Abeni <pabeni@...hat.com>
Cc: Simon Horman <horms@...nel.org>, Jamal Hadi Salim <jhs@...atatu.com>, 
	Cong Wang <xiyou.wangcong@...il.com>, Jiri Pirko <jiri@...nulli.us>, 
	"Toke Høiland-Jørgensen" <toke@...hat.com>, Kuniyuki Iwashima <kuniyu@...gle.com>, 
	Willem de Bruijn <willemb@...gle.com>, netdev@...r.kernel.org, eric.dumazet@...il.com, 
	Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH v3 net-next 02/14] net: init shinfo->gso_segs from qdisc_pkt_len_init()

Qdisc use shinfo->gso_segs for their pkts stats in bstats_update(),
but this field needs to be initialized for SKB_GSO_DODGY users.

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/core/dev.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index 46ce6c6107805132b1322128e86634eca91e3340..dba9eef8bd83dda89b5edd870b47373722264f48 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4071,7 +4071,7 @@ EXPORT_SYMBOL_GPL(validate_xmit_skb_list);
 
 static void qdisc_pkt_len_init(struct sk_buff *skb)
 {
-	const struct skb_shared_info *shinfo = skb_shinfo(skb);
+	struct skb_shared_info *shinfo = skb_shinfo(skb);
 
 	qdisc_skb_cb(skb)->pkt_len = skb->len;
 
@@ -4112,6 +4112,7 @@ static void qdisc_pkt_len_init(struct sk_buff *skb)
 			if (payload <= 0)
 				return;
 			gso_segs = DIV_ROUND_UP(payload, shinfo->gso_size);
+			shinfo->gso_segs = gso_segs;
 		}
 		qdisc_skb_cb(skb)->pkt_len += (gso_segs - 1) * hdr_len;
 	}
-- 
2.52.0.460.gd25c4c69ec-goog