diff options
| author | Eric Dumazet <edumazet@google.com> | 2025-11-21 08:32:48 +0000 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2025-11-25 16:10:32 +0100 |
| commit | c5d34f4583ea883b8d3441ded83e3a7207e0182d (patch) | |
| tree | d3748c3717b328899d9ce8fa4ffe7ae4542ed353 | |
| parent | 2773cb0b3120eb5c4b66d949eb99853d5bae1221 (diff) | |
net_sched: cake: use qdisc_pkt_segs()
Use new qdisc_pkt_segs() to avoid a cache line miss in cake_enqueue()
for non GSO packets.
cake_overhead() does not have to recompute it.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://patch.msgid.link/20251121083256.674562-7-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
| -rw-r--r-- | net/sched/sch_cake.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/net/sched/sch_cake.c b/net/sched/sch_cake.c index a20880034aa5..5948a149129c 100644 --- a/net/sched/sch_cake.c +++ b/net/sched/sch_cake.c @@ -1398,12 +1398,12 @@ static u32 cake_overhead(struct cake_sched_data *q, const struct sk_buff *skb) const struct skb_shared_info *shinfo = skb_shinfo(skb); unsigned int hdr_len, last_len = 0; u32 off = skb_network_offset(skb); + u16 segs = qdisc_pkt_segs(skb); u32 len = qdisc_pkt_len(skb); - u16 segs = 1; q->avg_netoff = cake_ewma(q->avg_netoff, off << 16, 8); - if (!shinfo->gso_size) + if (segs == 1) return cake_calc_overhead(q, len, off); /* borrowed from qdisc_pkt_len_segs_init() */ @@ -1430,12 +1430,6 @@ static u32 cake_overhead(struct cake_sched_data *q, const struct sk_buff *skb) hdr_len += sizeof(struct udphdr); } - if (unlikely(shinfo->gso_type & SKB_GSO_DODGY)) - segs = DIV_ROUND_UP(skb->len - hdr_len, - shinfo->gso_size); - else - segs = shinfo->gso_segs; - len = shinfo->gso_size + hdr_len; last_len = skb->len - shinfo->gso_size * (segs - 1); @@ -1788,7 +1782,7 @@ static s32 cake_enqueue(struct sk_buff *skb, struct Qdisc *sch, if (unlikely(len > b->max_skblen)) b->max_skblen = len; - if (skb_is_gso(skb) && q->rate_flags & CAKE_FLAG_SPLIT_GSO) { + if (qdisc_pkt_segs(skb) > 1 && q->rate_flags & CAKE_FLAG_SPLIT_GSO) { struct sk_buff *segs, *nskb; netdev_features_t features = netif_skb_features(skb); unsigned int slen = 0, numsegs = 0; |