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From: Volker Diels-Grabsch <v@njh.eu>
To: passt-dev@passt.top
Cc: Volker Diels-Grabsch <v@njh.eu>
Subject: [PATCH v5 1/5] Show debug message whenever we learn a new guest MAC address
Date: Thu, 11 Sep 2025 22:18:57 +0200	[thread overview]
Message-ID: <20250911201900.237677-2-v@njh.eu> (raw)

Signed-off-by: Volker Diels-Grabsch <v@njh.eu>
---
 tap.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tap.c b/tap.c
index 7ba6399..3c08126 100644
--- a/tap.c
+++ b/tap.c
@@ -1096,7 +1096,11 @@ void tap_add_packet(struct ctx *c, struct iov_tail *data,
 		return;
 
 	if (memcmp(c->guest_mac, eh->h_source, ETH_ALEN)) {
+		char bufmac[ETH_ADDRSTRLEN];
+
 		memcpy(c->guest_mac, eh->h_source, ETH_ALEN);
+		debug("Guest MAC address: %s",
+		      eth_ntop(c->guest_mac, bufmac, sizeof(bufmac)));
 		proto_update_l2_buf(c->guest_mac, NULL);
 	}
 
-- 
@@ -1096,7 +1096,11 @@ void tap_add_packet(struct ctx *c, struct iov_tail *data,
 		return;
 
 	if (memcmp(c->guest_mac, eh->h_source, ETH_ALEN)) {
+		char bufmac[ETH_ADDRSTRLEN];
+
 		memcpy(c->guest_mac, eh->h_source, ETH_ALEN);
+		debug("Guest MAC address: %s",
+		      eth_ntop(c->guest_mac, bufmac, sizeof(bufmac)));
 		proto_update_l2_buf(c->guest_mac, NULL);
 	}
 
-- 
2.47.3


             reply	other threads:[~2025-09-11 20:19 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-11 20:18 Volker Diels-Grabsch [this message]
2025-09-11 20:18 ` [PATCH v5 2/5] Improve clarity of comment Volker Diels-Grabsch
2025-09-11 20:19 ` [PATCH v5 3/5] Introduce constant MAC_BROADCAST Volker Diels-Grabsch
2025-09-11 20:19 ` [PATCH v5 4/5] Fix --no-icmp description and make it imply --no-ndp Volker Diels-Grabsch
2025-09-11 20:19 ` [PATCH v5 5/5] Send an initial ARP and NDP request to resolve the guest IP address Volker Diels-Grabsch

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