netem network emulator · Maintained

Maintainers

• M Stephen Hemminger <stephen@networkplumber.org>

Paths

• F net/sched/sch_netem.c

Last 30 days

Most active threads (last 7 days)

• WARM2d [PATCH net v6 0/9] net/sched: Fix packet loops in mirred and netem
  2026-05-25 12:26 · 2 replies in 7d · Jamal Hadi Salim <jhs@mojatatu.com>

Active reviewers (last 30 days)

• William Liu <hidden>
  4 attestations (2 Reported-by, 2 Reviewed-by) · last on 2026-05-25
• Stephen Hemminger <stephen@networkplumber.org>
  4 attestations (4 Reviewed-by) · last on 2026-05-25
• Savino Dicanosa <hidden>
  2 attestations (2 Reported-by) · last on 2026-05-25
• Victor Nogueira <hidden>
  2 attestations (2 Co-developed-by) · last on 2026-05-25
• Ji-Soo Chung <hidden>
  2 attestations (2 Reported-by) · last on 2026-05-25
• Gerlinde <hidden>
  2 attestations (2 Reported-by) · last on 2026-05-25
• zyc zyc <hidden>
  2 attestations (2 Reported-by) · last on 2026-05-25
• Manas Ghandat <hidden>
  2 attestations (2 Reported-by) · last on 2026-05-25

Recent patches

Most-recent 30 patches in this subsystem on netdev (capped at 30), ordered by date desc.

• WARM2d REVIEWED: 2 (1M) [PATCH net v6 4/9] net/sched: fix packet loop on netem when duplicate is on
  2026-05-25 · Jamal Hadi Salim <jhs@mojatatu.com>
• WARM2d REVIEWED: 1 (1M) [PATCH net v6 2/9] net/sched: Revert "net/sched: Restrict conditions for adding duplicating netems to qdisc tree"
  2026-05-25 · Jamal Hadi Salim <jhs@mojatatu.com>
• COOLING8d REVIEWED: 2 (1M) [PATCH net v5 4/9] net/sched: fix packet loop on netem when duplicate is on
  2026-05-14 · Jamal Hadi Salim <jhs@mojatatu.com>
• COOLING8d REVIEWED: 1 (1M) [PATCH net v5 2/9] net/sched: Revert "net/sched: Restrict conditions for adding duplicating netems to qdisc tree"
  2026-05-14 · Jamal Hadi Salim <jhs@mojatatu.com>
• COLD15d [PATCH v2 net-next 3/8] net/sched: annotate data-races around sch->qstats.backlog
  2026-05-10 · Eric Dumazet <edumazet@google.com>
• COLD15d [PATCH v2 net-next 2/8] net/sched: add qdisc_qlen_inc() and qdisc_qlen_dec()
  2026-05-10 · Eric Dumazet <edumazet@google.com>
• COOLING13d [PATCH net-next v5 5/5] net/sched: netem: add per-impairment extended statistics
  2026-05-09 · Stephen Hemminger <stephen@networkplumber.org>
• COOLING13d [PATCH net-next v5 4/5] net/sched: netem: handle multi-segment skb in corruption
  2026-05-09 · Stephen Hemminger <stephen@networkplumber.org>
• COOLING13d [PATCH net-next v5 3/5] net/sched: netem: replace pr_info with netlink extack error messages
  2026-05-09 · Stephen Hemminger <stephen@networkplumber.org>
• COOLING13d [PATCH net-next v5 2/5] net/sched: netem: remove useless VERSION
  2026-05-09 · Stephen Hemminger <stephen@networkplumber.org>
• COOLING13d [PATCH net-next v5 1/5] net/sched: netem: reorder struct netem_sched_data
  2026-05-09 · Stephen Hemminger <stephen@networkplumber.org>
• DORMANTno replies [PATCH v4 4/5] net/sched: netem: handle multi-segment skb in corruption
  2026-05-08 · Stephen Hemminger <stephen@networkplumber.org>
• COLD19d [PATCH v4 5/5] net/sched: netem: add per-impairment extended statistics
  2026-05-08 · Stephen Hemminger <stephen@networkplumber.org>
• COLD19d [PATCH v4 3/5] net/sched: netem: replace pr_info with netlink extack error messages
  2026-05-08 · Stephen Hemminger <stephen@networkplumber.org>
• COLD19d [PATCH v4 2/5] net/sched: netem: remove useless VERSION
  2026-05-08 · Stephen Hemminger <stephen@networkplumber.org>
• COLD19d [PATCH v4 1/5] net/sched: netem: reorder struct netem_sched_data
  2026-05-08 · Stephen Hemminger <stephen@networkplumber.org>
• COLD17d [PATCH net-next 3/8] net/sched: annotate data-races around sch->qstats.backlog
  2026-05-07 · Eric Dumazet <edumazet@google.com>
• COLD17d [PATCH net-next 2/8] net/sched: add qdisc_qlen_inc() and qdisc_qlen_dec()
  2026-05-07 · Eric Dumazet <edumazet@google.com>
• DORMANTno replies [PATCH net-next v3 5/5] net/sched: netem: add per-impairment extended statistics
  2026-05-05 · Stephen Hemminger <stephen@networkplumber.org>
• COLD22d [PATCH net-next v3 4/5] net/sched: netem: handle multi-segment skb in corruption
  2026-05-05 · Stephen Hemminger <stephen@networkplumber.org>
• COLD22d [PATCH net-next v3 3/5] net/sched: netem: replace pr_info with netlink extack error messages
  2026-05-05 · Stephen Hemminger <stephen@networkplumber.org>
• COLD22d [PATCH net-next v3 2/5] net/sched: netem: remove useless VERSION
  2026-05-05 · Stephen Hemminger <stephen@networkplumber.org>
• COLD22d [PATCH net-next v3 1/5] net/sched: netem: reorder struct netem_sched_data
  2026-05-05 · Stephen Hemminger <stephen@networkplumber.org>
• COLD22d [PATCH net-next v2 5/5] net/sched: netem: handle multi-segment skb in corruption
  2026-05-03 · Stephen Hemminger <stephen@networkplumber.org>
• COLD22d [PATCH net-next v2 4/5] net/sched: netem: add per-impairment extended statistics
  2026-05-03 · Stephen Hemminger <stephen@networkplumber.org>
• COLD22d [PATCH net-next v2 3/5] net/sched: netem: replace pr_info with netlink extack error messages
  2026-05-03 · Stephen Hemminger <stephen@networkplumber.org>
• COLD22d [PATCH net-next v2 2/5] net/sched: netem: remove useless VERSION
  2026-05-03 · Stephen Hemminger <stephen@networkplumber.org>
• COLD22d [PATCH net-next v2 1/5] net/sched: netem: reorder struct netem_sched_data
  2026-05-03 · Stephen Hemminger <stephen@networkplumber.org>
• DORMANTno replies [PATCH net-next 4/4] netem: add per-impairment extended statistics
  2026-05-02 · Stephen Hemminger <stephen@networkplumber.org>
• DORMANTno replies [PATCH net-next 3/4] net/sched: netem: replace pr_info with netlink extack error messages
  2026-05-02 · Stephen Hemminger <stephen@networkplumber.org>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• COLD53d REVIEWED: 1 (1M) [PATCH v3 2/7] net/sched: Revert "net/sched: Restrict conditions for adding duplicating netems to qdisc tree"
  2026-03-26 · Stephen Hemminger <stephen@networkplumber.org> · 1 Reviewed-by
• COLD53d REVIEWED: 1 (1M) [PATCH v3 4/7] net/sched: fix packet loop on netem when duplicate is on
  2026-03-26 · Stephen Hemminger <stephen@networkplumber.org> · 1 Reviewed-by
• COLD47d REVIEWED: 2 (2M) [PATCH net v4 1/8] net/sched: netem: fix probability gaps in 4-state loss model
  2026-04-06 · Stephen Hemminger <stephen@networkplumber.org> · 1 Reviewed-by
• COLD47d REVIEWED: 2 (2M) [PATCH net v4 2/8] net/sched: netem: fix queue limit check to include reordered packets
  2026-04-06 · Stephen Hemminger <stephen@networkplumber.org> · 1 Reviewed-by
• COLD47d REVIEWED: 2 (2M) [PATCH net v4 3/8] net/sched: netem: only reseed PRNG when seed is explicitly provided
  2026-04-06 · Stephen Hemminger <stephen@networkplumber.org> · 1 Reviewed-by
• COLD47d REVIEWED: 2 (2M) [PATCH net v4 6/8] net/sched: netem: null-terminate tfifo linear queue tail
  2026-04-06 · Stephen Hemminger <stephen@networkplumber.org> · 1 Reviewed-by
• COLD47d REVIEWED: 2 (2M) [PATCH net v4 7/8] net/sched: netem: check for invalid slot range
  2026-04-06 · Stephen Hemminger <stephen@networkplumber.org> · 1 Reviewed-by
• COLD47d REVIEWED: 2 (2M) [PATCH net v4 8/8] net/sched: netem: fix slot delay calculation overflow
  2026-04-06 · Stephen Hemminger <stephen@networkplumber.org> · 1 Reviewed-by
• COLD46d REVIEWED: 2 (2M) [PATTCH net v5 1/8] net/sched: netem: fix probability gaps in 4-state loss model
  2026-04-11 · Stephen Hemminger <stephen@networkplumber.org> · 1 Reviewed-by
• COLD46d REVIEWED: 2 (2M) [PATTCH net v5 2/8] net/sched: netem: fix queue limit check to include reordered packets
  2026-04-11 · Stephen Hemminger <stephen@networkplumber.org> · 1 Reviewed-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE198d [PATCH net-next 04/10] net_sched: use qdisc_skb_cb(skb)->pkt_segs in bstats_update()
  2025-11-10 · Eric Dumazet <edumazet@google.com>
• STALE196d [PATCH v2 net-next 05/14] net_sched: use qdisc_skb_cb(skb)->pkt_segs in bstats_update()
  2025-11-11 · Eric Dumazet <edumazet@google.com>
• STALE183d [PATCH v3 net-next 05/14] net_sched: use qdisc_skb_cb(skb)->pkt_segs in bstats_update()
  2025-11-21 · Eric Dumazet <edumazet@google.com>
• STALE72d [PATCH 04/12] net/sched: netem: restructure dequeue to avoid re-entrancy with child qdisc
  2026-03-13 · Stephen Hemminger <stephen@networkplumber.org>
• STALE72d [PATCH 05/12] net/sched: netem: fix probability gaps in 4-state loss model
  2026-03-13 · Stephen Hemminger <stephen@networkplumber.org>
• STALE72d [PATCH 06/12] net/sched: netem: fix slot delay calculation overflow
  2026-03-13 · Stephen Hemminger <stephen@networkplumber.org>
• STALE72d [PATCH 07/12] net/sched: netem: fix queue limit check to include reordered packets
  2026-03-13 · Stephen Hemminger <stephen@networkplumber.org>
• STALE72d [PATCH 08/12] net/sched: netem: null-terminate tfifo linear queue tail
  2026-03-13 · Stephen Hemminger <stephen@networkplumber.org>
• STALE72d [PATCH 09/12] net/sched: netem: only reseed PRNG when seed is explicitly provided
  2026-03-13 · Stephen Hemminger <stephen@networkplumber.org>
• STALE72d [PATCH 10/12] net/sched: netem: move state enums out of struct netem_sched_data
  2026-03-13 · Stephen Hemminger <stephen@networkplumber.org>