Re: [Intel-wired-lan] [net-next v3] idpf: Don't hard code napi_struct size

From: Tony Nguyen
Date: Tue Oct 08 2024 - 13:25:01 EST




On 10/8/2024 2:14 AM, Paolo Abeni wrote:
On 10/4/24 12:54, Joe Damato wrote:
The sizeof(struct napi_struct) can change. Don't hardcode the size to
400 bytes and instead use "sizeof(struct napi_struct)".

Suggested-by: Alexander Lobakin <aleksander.lobakin@xxxxxxxxx>
Signed-off-by: Joe Damato <jdamato@xxxxxxxxxx>
---
  drivers/net/ethernet/intel/idpf/idpf_txrx.h | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/idpf/idpf_txrx.h b/drivers/net/ethernet/intel/idpf/idpf_txrx.h
index f0537826f840..9c1fe84108ed 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_txrx.h
+++ b/drivers/net/ethernet/intel/idpf/idpf_txrx.h
@@ -438,7 +438,8 @@ struct idpf_q_vector {
      __cacheline_group_end_aligned(cold);
  };
  libeth_cacheline_set_assert(struct idpf_q_vector, 112,
-                424 + 2 * sizeof(struct dim),
+                24 + sizeof(struct napi_struct) +
+                2 * sizeof(struct dim),
                  8 + sizeof(cpumask_var_t));
  struct idpf_rx_queue_stats {

@Tony: I'm assuming you want this one to go via your tree first, please LMK otherwise.

Hi Paolo,

This seems straightforward and we'd see the issues compile-time so I think it's ok for you to take directly.

Reviewed-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>

Thanks,
Tony