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Message-Id: <20240925180017.82891-2-jdamato@fastly.com>
Date: Wed, 25 Sep 2024 18:00:17 +0000
From: Joe Damato <jdamato@...tly.com>
To: netdev@...r.kernel.org
Cc: Joe Damato <jdamato@...tly.com>,
Tony Nguyen <anthony.l.nguyen@...el.com>,
Przemek Kitszel <przemyslaw.kitszel@...el.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Alexander Lobakin <aleksander.lobakin@...el.com>,
intel-wired-lan@...ts.osuosl.org (moderated list:INTEL ETHERNET DRIVERS),
linux-kernel@...r.kernel.org (open list)
Subject: [RFC net-next 1/1] idpf: Don't hard code napi_struct size
The sizeof(struct napi_struct) can change. Don't hardcode the size to
400 bytes and instead use "sizeof(struct napi_struct)".
While fixing this, also move other calculations into compile time
defines.
Signed-off-by: Joe Damato <jdamato@...tly.com>
---
drivers/net/ethernet/intel/idpf/idpf_txrx.h | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.h b/drivers/net/ethernet/intel/idpf/idpf_txrx.h
index f0537826f840..d5e904ddcb6e 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_txrx.h
+++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.h
@@ -437,9 +437,13 @@ struct idpf_q_vector {
cpumask_var_t affinity_mask;
__cacheline_group_end_aligned(cold);
};
-libeth_cacheline_set_assert(struct idpf_q_vector, 112,
- 424 + 2 * sizeof(struct dim),
- 8 + sizeof(cpumask_var_t));
+
+#define IDPF_Q_VECTOR_RO_SZ (112)
+#define IDPF_Q_VECTOR_RW_SZ (sizeof(struct napi_struct) + 24 + \
+ 2 * sizeof(struct dim))
+#define IDPF_Q_VECTOR_COLD_SZ (8 + sizeof(cpumask_var_t))
+libeth_cacheline_set_assert(struct idpf_q_vector, IDPF_Q_VECTOR_RO_SZ,
+ IDPF_Q_VECTOR_RW_SZ, IDPF_Q_VECTOR_COLD_SZ);
struct idpf_rx_queue_stats {
u64_stats_t packets;
--
2.25.1
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