From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>,
Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>,
linux-arm-kernel@lists.infradead.org,
linux-stm32@st-md-mailman.stormreply.com, netdev@vger.kernel.org,
Paolo Abeni <pabeni@redhat.com>, Sam Edwards <cfsworks@gmail.com>
Subject: [PATCH net-next] net: stmmac: enable RPS and RBU interrupts
Date: Fri, 10 Apr 2026 14:07:51 +0100 [thread overview]
Message-ID: <E1wBBaR-0000000GZHR-1dbM@rmk-PC.armlinux.org.uk> (raw)
Enable receive process stopped and receive buffer unavailable
interrupts, so that the statistic counters can be updated.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
Since we are seeing receive buffer exhaustion on several platforms,
let's enable the interrupts so the statistics we publish via ethtool -S
actually work to aid diagnosis. I've been in two minds about whether
to send this patch, but given the problems with stmmac at the moment,
I think it should be merged.
drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h
index af6580332d49..43b036d4e95b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.h
@@ -99,6 +99,8 @@ static inline u32 dma_chanx_base_addr(const struct dwmac4_addrs *addrs,
#define DMA_CHAN_INTR_ENA_NIE_4_10 BIT(15)
#define DMA_CHAN_INTR_ENA_AIE_4_10 BIT(14)
#define DMA_CHAN_INTR_ENA_FBE BIT(12)
+#define DMA_CHAN_INTR_ENA_RPS BIT(8)
+#define DMA_CHAN_INTR_ENA_RBU BIT(7)
#define DMA_CHAN_INTR_ENA_RIE BIT(6)
#define DMA_CHAN_INTR_ENA_TIE BIT(0)
@@ -107,6 +109,8 @@ static inline u32 dma_chanx_base_addr(const struct dwmac4_addrs *addrs,
DMA_CHAN_INTR_ENA_TIE)
#define DMA_CHAN_INTR_ABNORMAL (DMA_CHAN_INTR_ENA_AIE | \
+ DMA_CHAN_INTR_ENA_RPS | \
+ DMA_CHAN_INTR_ENA_RBU | \
DMA_CHAN_INTR_ENA_FBE)
/* DMA default interrupt mask for 4.00 */
#define DMA_CHAN_INTR_DEFAULT_MASK (DMA_CHAN_INTR_NORMAL | \
@@ -117,6 +121,8 @@ static inline u32 dma_chanx_base_addr(const struct dwmac4_addrs *addrs,
DMA_CHAN_INTR_ENA_TIE)
#define DMA_CHAN_INTR_ABNORMAL_4_10 (DMA_CHAN_INTR_ENA_AIE_4_10 | \
+ DMA_CHAN_INTR_ENA_RPS | \
+ DMA_CHAN_INTR_ENA_RBU | \
DMA_CHAN_INTR_ENA_FBE)
/* DMA default interrupt mask for 4.10a */
#define DMA_CHAN_INTR_DEFAULT_MASK_4_10 (DMA_CHAN_INTR_NORMAL_4_10 | \
--
2.47.3
reply other threads:[~2026-04-10 13:07 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=E1wBBaR-0000000GZHR-1dbM@rmk-PC.armlinux.org.uk \
--to=rmk+kernel@armlinux.org.uk \
--cc=alexandre.torgue@foss.st.com \
--cc=andrew+netdev@lunn.ch \
--cc=andrew@lunn.ch \
--cc=cfsworks@gmail.com \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=kuba@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-stm32@st-md-mailman.stormreply.com \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox