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From: Stephen Hemminger <stephen@networkplumber.org>
To: netdev@vger.kernel.org
Cc: Stephen Hemminger <stephen@networkplumber.org>
Subject: [PATCH 10/12] net/sched: netem: move state enums out of struct netem_sched_data
Date: Fri, 13 Mar 2026 14:15:10 -0700	[thread overview]
Message-ID: <20260313211646.12549-11-stephen@networkplumber.org> (raw)
In-Reply-To: <20260313211646.12549-1-stephen@networkplumber.org>

The _4_state_model and GE_state_model enum definitions are declared
as struct members but are never read or written. Only the enum
constants they define (TX_IN_GAP_PERIOD, GOOD_STATE, etc.) are used.

Move them to file scope as anonymous enums and remove the unused
struct fields, saving 8 bytes per netem instance.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 net/sched/sch_netem.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index dd98778ebbec..1957a15f6d1a 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -81,6 +81,18 @@ struct disttable {
 	s16 table[] __counted_by(size);
 };
 
+enum GE_state_model {
+	GOOD_STATE = 1,
+	BAD_STATE,
+};
+
+enum _4_state_model {
+	TX_IN_GAP_PERIOD = 1,
+	TX_IN_BURST_PERIOD,
+	LOST_IN_GAP_PERIOD,
+	LOST_IN_BURST_PERIOD,
+};
+
 struct netem_sched_data {
 	/* internal t(ime)fifo qdisc uses t_root and sch->limit */
 	struct rb_root t_root;
@@ -131,18 +143,6 @@ struct netem_sched_data {
 		CLG_GILB_ELL,
 	} loss_model;
 
-	enum {
-		TX_IN_GAP_PERIOD = 1,
-		TX_IN_BURST_PERIOD,
-		LOST_IN_GAP_PERIOD,
-		LOST_IN_BURST_PERIOD,
-	} _4_state_model;
-
-	enum {
-		GOOD_STATE = 1,
-		BAD_STATE,
-	} GE_state_model;
-
 	/* Correlated Loss Generation models */
 	struct clgstate {
 		/* state of the Markov chain */
-- 
2.51.0


  parent reply	other threads:[~2026-03-13 21:17 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-13 21:15 [PATCH 00/12] netem: fixes, cleanup, and selftest Stephen Hemminger
2026-03-13 21:15 ` [PATCH 01/12] selftests: net: add netem qdisc test Stephen Hemminger
2026-03-13 21:15 ` [PATCH 02/12] Revert "net/sched: Restrict conditions for adding duplicating netems to qdisc tree" Stephen Hemminger
2026-03-13 21:15 ` [PATCH 03/12] net/sched: netem: add per-CPU recursion guard for duplication Stephen Hemminger
2026-03-14 19:29   ` William Liu
2026-03-15 16:06     ` Stephen Hemminger
2026-03-15 16:19       ` Jamal Hadi Salim
2026-03-15 17:18         ` Stephen Hemminger
2026-03-16 17:52           ` Jamal Hadi Salim
2026-03-13 21:15 ` [PATCH 04/12] net/sched: netem: restructure dequeue to avoid re-entrancy with child qdisc Stephen Hemminger
2026-03-13 21:15 ` [PATCH 05/12] net/sched: netem: fix probability gaps in 4-state loss model Stephen Hemminger
2026-03-13 21:15 ` [PATCH 06/12] net/sched: netem: fix slot delay calculation overflow Stephen Hemminger
2026-03-13 21:15 ` [PATCH 07/12] net/sched: netem: fix queue limit check to include reordered packets Stephen Hemminger
2026-03-13 21:15 ` [PATCH 08/12] net/sched: netem: null-terminate tfifo linear queue tail Stephen Hemminger
2026-03-13 21:15 ` [PATCH 09/12] net/sched: netem: only reseed PRNG when seed is explicitly provided Stephen Hemminger
2026-03-13 21:15 ` Stephen Hemminger [this message]
2026-03-13 21:15 ` [PATCH 11/12] net/sched: netem: remove useless VERSION Stephen Hemminger
2026-03-13 21:15 ` [PATCH 12/12] net/sched: netem: replace pr_info with netlink extack error messages Stephen Hemminger
2026-03-14 14:09 ` [PATCH 00/12] netem: fixes, cleanup, and selftest Jakub Kicinski
2026-03-14 15:39   ` Stephen Hemminger
2026-03-14 15:51   ` Stephen Hemminger
2026-03-14 16:00     ` Jakub Kicinski

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