tap: make tap_update_mac() generic

Use ethhdr rather than tap_hdr.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-ID: <20240303135114.1023026-9-lvivier@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

4 files changed, 12 insertions, 12 deletions

diff --git a/tap.c b/tap.c
index f971461..c7b9372 100644
--- a/tap.c
+++ b/tap.c
@@ -419,18 +419,18 @@ size_t tap_send_frames(const struct ctx *c, const struct iovec *iov, size_t n)
 }
 
 /**
- * tap_update_mac() - Update tap L2 header with new Ethernet addresses
- * @taph:	Tap headers to update
+ * eth_update_mac() - Update tap L2 header with new Ethernet addresses
+ * @eh:		Ethernet headers to update
  * @eth_d:	Ethernet destination address, NULL if unchanged
  * @eth_s:	Ethernet source address, NULL if unchanged
  */
-void tap_update_mac(struct tap_hdr *taph,
+void eth_update_mac(struct ethhdr *eh,
 		    const unsigned char *eth_d, const unsigned char *eth_s)
 {
 	if (eth_d)
-		memcpy(taph->eh.h_dest, eth_d, sizeof(taph->eh.h_dest));
+		memcpy(eh->h_dest, eth_d, sizeof(eh->h_dest));
 	if (eth_s)
-		memcpy(taph->eh.h_source, eth_s, sizeof(taph->eh.h_source));
+		memcpy(eh->h_source, eth_s, sizeof(eh->h_source));
 }
 
 PACKET_POOL_DECL(pool_l4, UIO_MAXIOV, pkt_buf);
diff --git a/tap.h b/tap.h
index 466d914..437b9aa 100644
--- a/tap.h
+++ b/tap.h
@@ -74,7 +74,7 @@ void tap_icmp6_send(const struct ctx *c,
 		    const void *in, size_t len);
 int tap_send(const struct ctx *c, const void *data, size_t len);
 size_t tap_send_frames(const struct ctx *c, const struct iovec *iov, size_t n);
-void tap_update_mac(struct tap_hdr *taph,
+void eth_update_mac(struct ethhdr *eh,
 		    const unsigned char *eth_d, const unsigned char *eth_s);
 void tap_listen_handler(struct ctx *c, uint32_t events);
 void tap_handler_pasta(struct ctx *c, uint32_t events,
diff --git a/tcp.c b/tcp.c
index a7156ee..db42d53 100644
--- a/tcp.c
+++ b/tcp.c
@@ -981,10 +981,10 @@ void tcp_update_l2_buf(const unsigned char *eth_d, const unsigned char *eth_s)
 		struct tcp4_l2_buf_t *b4 = &tcp4_l2_buf[i];
 		struct tcp6_l2_buf_t *b6 = &tcp6_l2_buf[i];
 
-		tap_update_mac(&b4->taph, eth_d, eth_s);
-		tap_update_mac(&b6->taph, eth_d, eth_s);
-		tap_update_mac(&b4f->taph, eth_d, eth_s);
-		tap_update_mac(&b6f->taph, eth_d, eth_s);
+		eth_update_mac(&b4->taph.eh, eth_d, eth_s);
+		eth_update_mac(&b6->taph.eh, eth_d, eth_s);
+		eth_update_mac(&b4f->taph.eh, eth_d, eth_s);
+		eth_update_mac(&b6f->taph.eh, eth_d, eth_s);
 	}
 }
 
diff --git a/udp.c b/udp.c
index 2fd6792..1f46afb 100644
--- a/udp.c
+++ b/udp.c
@@ -288,8 +288,8 @@ void udp_update_l2_buf(const unsigned char *eth_d, const unsigned char *eth_s)
 		struct udp4_l2_buf_t *b4 = &udp4_l2_buf[i];
 		struct udp6_l2_buf_t *b6 = &udp6_l2_buf[i];
 
-		tap_update_mac(&b4->taph, eth_d, eth_s);
-		tap_update_mac(&b6->taph, eth_d, eth_s);
+		eth_update_mac(&b4->taph.eh, eth_d, eth_s);
+		eth_update_mac(&b6->taph.eh, eth_d, eth_s);
 	}
 }