From: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Date: Mon, 9 Mar 2026 09:39:28 +0000 (+0000)
Subject: net: stmmac: reorder structs to reduce memory consumption
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=3357642e65e9454c3da64b62c0ed987ee4010008;p=thirdparty%2Flinux.git

net: stmmac: reorder structs to reduce memory consumption

Reorder some of the stmmac structures to allow them to pack better,
thereby using less memory. On aarch64, sizeof(struct stmmac_priv)
was 880, and with this change becomes 816, saving 64 bytes, which
is an 8% saving.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Tested-by: Mohd Ayaan Anwar <mohd.anwar@oss.qualcomm.com>
Link: https://patch.msgid.link/E1vzX5E-0000000CVs8-40w4@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index 9420da96a4ff..411cdd3ea034 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -108,37 +108,37 @@ struct stmmac_dma_cfg {
 
 #define AXI_BLEN	7
 struct stmmac_axi {
-	bool axi_lpi_en;
-	bool axi_xit_frm;
 	u32 axi_wr_osr_lmt;
 	u32 axi_rd_osr_lmt;
-	bool axi_kbbe;
 	u32 axi_blen_regval;
+	bool axi_lpi_en;
+	bool axi_xit_frm;
+	bool axi_kbbe;
 	bool axi_fb;
 	bool axi_mb;
 	bool axi_rb;
 };
 
 struct stmmac_rxq_cfg {
-	u8 mode_to_use;
 	u32 chan;
+	u32 prio;
+	u8 mode_to_use;
 	u8 pkt_route;
 	bool use_prio;
-	u32 prio;
 };
 
 struct stmmac_txq_cfg {
 	u32 weight;
-	bool coe_unsupported;
-	u8 mode_to_use;
 	/* Credit Base Shaper parameters */
 	u32 send_slope;
 	u32 idle_slope;
 	u32 high_credit;
 	u32 low_credit;
-	bool use_prio;
 	u32 prio;
 	int tbs_en;
+	bool use_prio;
+	bool coe_unsupported;
+	u8 mode_to_use;
 };
 
 struct stmmac_safety_feature_cfg {