linux-kernel - Re: [PATCH net-next] net: openvswitch: allow providing upcall pid for the 'execute' command

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Message-ID: <20250701192136.6b8f9569@kernel.org>
Date: Tue, 1 Jul 2025 19:21:36 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Ilya Maximets <i.maximets@....org>
Cc: netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>, Eric
 Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Simon
 Horman <horms@...nel.org>, dev@...nvswitch.org,
 linux-kernel@...r.kernel.org, Eelco Chaudron <echaudro@...hat.com>, Aaron
 Conole <aconole@...hat.com>
Subject: Re: [PATCH net-next] net: openvswitch: allow providing upcall pid
 for the 'execute' command

On Sat, 28 Jun 2025 00:01:33 +0200 Ilya Maximets wrote:
> @@ -616,6 +618,7 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
>  	struct sw_flow_actions *sf_acts;
>  	struct datapath *dp;
>  	struct vport *input_vport;
> +	u32 upcall_pid = 0;
>  	u16 mru = 0;
>  	u64 hash;
>  	int len;
> @@ -651,6 +654,10 @@ static int ovs_packet_cmd_execute(struct sk_buff *skb, struct genl_info *info)
>  			       !!(hash & OVS_PACKET_HASH_L4_BIT));
>  	}
>  
> +	if (a[OVS_PACKET_ATTR_UPCALL_PID])
> +		upcall_pid = nla_get_u32(a[OVS_PACKET_ATTR_UPCALL_PID]);
> +	OVS_CB(packet)->upcall_pid = upcall_pid;

sorry for a late nit:

	OVS_CB(packet)->upcall_pid =
		nla_get_u32_default(a[OVS_PACKET_ATTR_UPCALL_PID], 0);

?