linux-kernel - [PATCH net-next] net/packet: Add getsockopt support for PACKET_COPY

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Date: Fri,  8 Mar 2024 11:23:29 +0000
From: Juntong Deng <juntong.deng@...look.com>
To: willemdebruijn.kernel@...il.com,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com
Cc: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH net-next] net/packet: Add getsockopt support for PACKET_COPY_THRESH

Currently getsockopt does not support PACKET_COPY_THRESH,
and we are unable to get the value of PACKET_COPY_THRESH
socket option through getsockopt.

This patch adds getsockopt support for PACKET_COPY_THRESH.

Signed-off-by: Juntong Deng <juntong.deng@...look.com>
---
 net/packet/af_packet.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 0db31ca4982d..65042edd1a97 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -4090,6 +4090,9 @@ static int packet_getsockopt(struct socket *sock, int level, int optname,
 	case PACKET_VNET_HDR_SZ:
 		val = READ_ONCE(po->vnet_hdr_sz);
 		break;
+	case PACKET_COPY_THRESH:
+		val = pkt_sk(sk)->copy_thresh;
+		break;
 	case PACKET_VERSION:
 		val = po->tp_version;
 		break;
-- 
2.39.2