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| author | Toke Høiland-Jørgensen <toke@redhat.com> | 2019-01-09 17:09:44 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-01-15 20:12:01 -0800 |
| commit | 8c6c37fdc20ec9ffaa342f827a8e20afe736fb0c (patch) | |
| tree | 98e514e9a434fefc86518fe11b91f6d4429bcbdc /net/sched | |
| parent | 37d9cf1a3ce35de3df6f7d209bfb1f50cf188cea (diff) | |
| download | linux-8c6c37fdc20ec9ffaa342f827a8e20afe736fb0c.tar.gz linux-8c6c37fdc20ec9ffaa342f827a8e20afe736fb0c.tar.bz2 linux-8c6c37fdc20ec9ffaa342f827a8e20afe736fb0c.zip | |
sch_cake: Correctly update parent qlen when splitting GSO packets
To ensure parent qdiscs have the same notion of the number of enqueued
packets even after splitting a GSO packet, update the qdisc tree with the
number of packets that was added due to the split.
Reported-by: Pete Heist <pete@heistp.net>
Tested-by: Pete Heist <pete@heistp.net>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
| -rw-r--r-- | net/sched/sch_cake.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/net/sched/sch_cake.c b/net/sched/sch_cake.c index b910cd5c56f7..73940293700d 100644 --- a/net/sched/sch_cake.c +++ b/net/sched/sch_cake.c @@ -1667,7 +1667,7 @@ static s32 cake_enqueue(struct sk_buff *skb, struct Qdisc *sch, if (skb_is_gso(skb) && q->rate_flags & CAKE_FLAG_SPLIT_GSO) { struct sk_buff *segs, *nskb; netdev_features_t features = netif_skb_features(skb); - unsigned int slen = 0; + unsigned int slen = 0, numsegs = 0; segs = skb_gso_segment(skb, features & ~NETIF_F_GSO_MASK); if (IS_ERR_OR_NULL(segs)) @@ -1683,6 +1683,7 @@ static s32 cake_enqueue(struct sk_buff *skb, struct Qdisc *sch, flow_queue_add(flow, segs); sch->q.qlen++; + numsegs++; slen += segs->len; q->buffer_used += segs->truesize; b->packets++; @@ -1696,7 +1697,7 @@ static s32 cake_enqueue(struct sk_buff *skb, struct Qdisc *sch, sch->qstats.backlog += slen; q->avg_window_bytes += slen; - qdisc_tree_reduce_backlog(sch, 1, len); + qdisc_tree_reduce_backlog(sch, 1-numsegs, len-slen); consume_skb(skb); } else { /* not splitting */ |