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From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>,
	Alexei Starovoitov <ast@kernel.org>,
	Andrew Lunn <andrew+netdev@lunn.ch>,
	bpf@vger.kernel.org, Daniel Borkmann <daniel@iogearbox.net>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>,
	Jesper Dangaard Brouer <hawk@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-stm32@st-md-mailman.stormreply.com, netdev@vger.kernel.org,
	Paolo Abeni <pabeni@redhat.com>,
	Stanislav Fomichev <sdf@fomichev.me>
Subject: [PATCH net-next v3 01/15] net: stmmac: rearrange stmmac_tx_info members to pack better
Date: Fri, 13 Mar 2026 09:51:02 +0000	[thread overview]
Message-ID: <E1w0zAc-0000000D4Ey-36GC@rmk-PC.armlinux.org.uk> (raw)
In-Reply-To: <abPdzyXJHqt5v3bi@shell.armlinux.org.uk>

Rearrange the struct stmmac_tx_info members to pack better, essentially
by sorting by type size:

xsk_meta	embeds only a pointer - 32 or 64 bit
buf		dma address, 32 or 64 bit
len		normally 32 bit
buf_type	dependent on arch
map_as_page	normally 8 bit
last_segment	normally 8 bit
is_jumbo	normally 8 bit

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index bba9bb9c95bf..b096a9e090e3 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -47,13 +47,13 @@ enum stmmac_txbuf_type {
 };
 
 struct stmmac_tx_info {
+	struct xsk_tx_metadata_compl xsk_meta;
 	dma_addr_t buf;
-	bool map_as_page;
 	unsigned len;
+	enum stmmac_txbuf_type buf_type;
+	bool map_as_page;
 	bool last_segment;
 	bool is_jumbo;
-	enum stmmac_txbuf_type buf_type;
-	struct xsk_tx_metadata_compl xsk_meta;
 };
 
 #define STMMAC_TBS_AVAIL	BIT(0)
-- 
2.47.3


  reply	other threads:[~2026-03-13  9:51 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-13  9:50 [PATCH net-next v3 00/15] net: stmmac: clean up descriptor handling part 1 Russell King (Oracle)
2026-03-13  9:51 ` Russell King (Oracle) [this message]
2026-03-13  9:51 ` [PATCH net-next v3 02/15] net: stmmac: helpers for filling tx_q->tx_skbuff_dma Russell King (Oracle)
2026-03-13  9:51 ` [PATCH net-next v3 03/15] net: stmmac: clean up stmmac_clear_rx_descriptors() Russell King (Oracle)
2026-03-13  9:51 ` [PATCH net-next v3 04/15] net: stmmac: add helper to get hardware receive descriptor Russell King (Oracle)
2026-03-13  9:51 ` [PATCH net-next v3 05/15] net: stmmac: add helper to get size of a " Russell King (Oracle)
2026-03-13  9:51 ` [PATCH net-next v3 06/15] net: stmmac: add helper to set receive tail pointer Russell King (Oracle)
2026-03-13  9:51 ` [PATCH net-next v3 07/15] net: stmmac: remove rx_tail_addr Russell King (Oracle)
2026-03-13  9:51 ` [PATCH net-next v3 08/15] net: stmmac: use consistent tests for receive buffer size Russell King (Oracle)
2026-03-13  9:51 ` [PATCH net-next v3 09/15] net: stmmac: add helper to set " Russell King (Oracle)
2026-03-13  9:51 ` [PATCH net-next v3 10/15] net: stmmac: simplify stmmac_set_queue_rx_buf_size() Russell King (Oracle)
2026-03-13  9:51 ` [PATCH net-next v3 11/15] net: stmmac: add helper to get hardware transmit descriptor Russell King (Oracle)
2026-03-13 12:12   ` Russell King (Oracle)
2026-03-13  9:51 ` [PATCH net-next v3 12/15] net: stmmac: add helper to get size of a " Russell King (Oracle)
2026-03-13  9:52 ` [PATCH net-next v3 13/15] net: stmmac: add helper to set transmit tail pointer Russell King (Oracle)
2026-03-13  9:52 ` [PATCH net-next v3 14/15] net: stmmac: remove tx_tail_addr Russell King (Oracle)
2026-03-13  9:52 ` [PATCH net-next v3 15/15] net: stmmac: use queue rather than ->queue_index Russell King (Oracle)

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