Re: [RFC net-next v2 4/9] netdev-genl: Dump napi_defer_hard_irqs

[Joe Damato]

On Sun, Sep 08, 2024 at 04:06:38PM +0000, Joe Damato wrote:
> Support dumping defer_hard_irqs for a NAPI ID.
> 
> Signed-off-by: Joe Damato <jdamato@xxxxxxxxxx>
> ---
>  Documentation/netlink/specs/netdev.yaml | 8 ++++++++
>  include/uapi/linux/netdev.h             | 1 +
>  net/core/netdev-genl.c                  | 5 +++++
>  tools/include/uapi/linux/netdev.h       | 1 +
>  4 files changed, 15 insertions(+)

[...]

> diff --git a/net/core/netdev-genl.c b/net/core/netdev-genl.c
> index 9561841b9d2d..f1e505ad069f 100644
> --- a/net/core/netdev-genl.c
> +++ b/net/core/netdev-genl.c
> @@ -160,6 +160,7 @@ static int
>  netdev_nl_napi_fill_one(struct sk_buff *rsp, struct napi_struct *napi,
>  			const struct genl_info *info)
>  {
> +	int napi_defer_hard_irqs;

I've already made this a u32 in my rfcv2 branch.

>  	void *hdr;
>  	pid_t pid;
>  
> @@ -191,6 +192,10 @@ netdev_nl_napi_fill_one(struct sk_buff *rsp, struct napi_struct *napi,
>  			goto nla_put_failure;
>  	}
>  
> +	napi_defer_hard_irqs = napi_get_defer_hard_irqs(napi);
> +	if (nla_put_s32(rsp, NETDEV_A_NAPI_DEFER_HARD_IRQS, napi_defer_hard_irqs))
> +		goto nla_put_failure;
> +
>  	genlmsg_end(rsp, hdr);
>  
>  	return 0;