drivers: Move wired_multicast_membership() to a common file

This continues refactoring of the common parts of wired drivers code
into a shared file, so that they can be reused by other drivers.

Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>

src/drivers/driver_macsec_qca.c

@@ -76,34 +76,6 @@ struct macsec_qca_data {
 };
 
 
-static int macsec_qca_multicast_membership(int sock, int ifindex,
-					   const u8 *addr, int add)
-{
-#ifdef __linux__
-	struct packet_mreq mreq;
-
-	if (sock < 0)
-		return -1;
-
-	os_memset(&mreq, 0, sizeof(mreq));
-	mreq.mr_ifindex = ifindex;
-	mreq.mr_type = PACKET_MR_MULTICAST;
-	mreq.mr_alen = ETH_ALEN;
-	os_memcpy(mreq.mr_address, addr, ETH_ALEN);
-
-	if (setsockopt(sock, SOL_PACKET,
-		       add ? PACKET_ADD_MEMBERSHIP : PACKET_DROP_MEMBERSHIP,
-		       &mreq, sizeof(mreq)) < 0) {
-		wpa_printf(MSG_ERROR, "setsockopt: %s", strerror(errno));
-		return -1;
-	}
-	return 0;
-#else /* __linux__ */
-	return -1;
-#endif /* __linux__ */
-}
-
-
 static int macsec_qca_get_ssid(void *priv, u8 *ssid)
 {
 	ssid[0] = 0;
@@ -341,9 +313,9 @@ static void * macsec_qca_init(void *ctx, const char *ifname)
 		drv->common.iff_up = 1;
 	}
 
-	if (macsec_qca_multicast_membership(drv->common.pf_sock,
-					    if_nametoindex(drv->common.ifname),
-					    pae_group_addr, 1) == 0) {
+	if (wired_multicast_membership(drv->common.pf_sock,
+				       if_nametoindex(drv->common.ifname),
+				       pae_group_addr, 1) == 0) {
 		wpa_printf(MSG_DEBUG,
 			   "%s: Added multicast membership with packet socket",
 			   __func__);
@@ -392,9 +364,9 @@ static void macsec_qca_deinit(void *priv)
 	int flags;
 
 	if (drv->common.membership &&
-	    macsec_qca_multicast_membership(drv->common.pf_sock,
-					    if_nametoindex(drv->common.ifname),
-					    pae_group_addr, 0) < 0) {
+	    wired_multicast_membership(drv->common.pf_sock,
+				       if_nametoindex(drv->common.ifname),
+				       pae_group_addr, 0) < 0) {
 		wpa_printf(MSG_DEBUG,
 			   "%s: Failed to remove PAE multicast group (PACKET)",
 			   __func__);

src/drivers/driver_wired.c

@@ -76,34 +76,6 @@ struct dhcp_message {
 };
 
 
-static int wired_multicast_membership(int sock, int ifindex,
-				      const u8 *addr, int add)
-{
-#ifdef __linux__
-	struct packet_mreq mreq;
-
-	if (sock < 0)
-		return -1;
-
-	os_memset(&mreq, 0, sizeof(mreq));
-	mreq.mr_ifindex = ifindex;
-	mreq.mr_type = PACKET_MR_MULTICAST;
-	mreq.mr_alen = ETH_ALEN;
-	os_memcpy(mreq.mr_address, addr, ETH_ALEN);
-
-	if (setsockopt(sock, SOL_PACKET,
-		       add ? PACKET_ADD_MEMBERSHIP : PACKET_DROP_MEMBERSHIP,
-		       &mreq, sizeof(mreq)) < 0) {
-		wpa_printf(MSG_ERROR, "setsockopt: %s", strerror(errno));
-		return -1;
-	}
-	return 0;
-#else /* __linux__ */
-	return -1;
-#endif /* __linux__ */
-}
-
-
 #ifdef __linux__
 static void handle_data(void *ctx, unsigned char *buf, size_t len)
 {

src/drivers/driver_wired_common.c

@@ -0,0 +1,57 @@
+/*
+ * Common functions for Wired Ethernet driver interfaces
+ * Copyright (c) 2005-2009, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2004, Gunter Burchardt <tira@isx.de>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "eloop.h"
+#include "driver.h"
+#include "driver_wired_common.h"
+
+#include <sys/ioctl.h>
+#include <net/if.h>
+#ifdef __linux__
+#include <netpacket/packet.h>
+#include <net/if_arp.h>
+#include <net/if.h>
+#endif /* __linux__ */
+#if defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__)
+#include <net/if_dl.h>
+#include <net/if_media.h>
+#endif /* defined(__FreeBSD__) || defined(__DragonFly__) || defined(__FreeBSD_kernel__) */
+#ifdef __sun__
+#include <sys/sockio.h>
+#endif /* __sun__ */
+
+
+int wired_multicast_membership(int sock, int ifindex, const u8 *addr, int add)
+{
+#ifdef __linux__
+	struct packet_mreq mreq;
+
+	if (sock < 0)
+		return -1;
+
+	os_memset(&mreq, 0, sizeof(mreq));
+	mreq.mr_ifindex = ifindex;
+	mreq.mr_type = PACKET_MR_MULTICAST;
+	mreq.mr_alen = ETH_ALEN;
+	os_memcpy(mreq.mr_address, addr, ETH_ALEN);
+
+	if (setsockopt(sock, SOL_PACKET,
+		       add ? PACKET_ADD_MEMBERSHIP : PACKET_DROP_MEMBERSHIP,
+		       &mreq, sizeof(mreq)) < 0) {
+		wpa_printf(MSG_ERROR, "setsockopt: %s", strerror(errno));
+		return -1;
+	}
+	return 0;
+#else /* __linux__ */
+	return -1;
+#endif /* __linux__ */
+}

src/drivers/driver_wired_common.h

@@ -22,4 +22,6 @@ struct driver_wired_common_data {
 static const u8 pae_group_addr[ETH_ALEN] =
 { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x03 };
 
+int wired_multicast_membership(int sock, int ifindex, const u8 *addr, int add);
+
 #endif /* DRIVER_WIRED_COMMON_H */

src/drivers/drivers.mak

@@ -15,11 +15,17 @@ DRV_AP_LIBS =
 ifdef CONFIG_DRIVER_WIRED
 DRV_CFLAGS += -DCONFIG_DRIVER_WIRED
 DRV_OBJS += ../src/drivers/driver_wired.o
+NEED_DRV_WIRED_COMMON=1
 endif
 
 ifdef CONFIG_DRIVER_MACSEC_QCA
 DRV_CFLAGS += -DCONFIG_DRIVER_MACSEC_QCA
 DRV_OBJS += ../src/drivers/driver_macsec_qca.o
+NEED_DRV_WIRED_COMMON=1
+endif
+
+ifdef NEED_DRV_WIRED_COMMON
+DRV_OBJS += ../src/drivers/driver_wired_common.o
 endif
 
 ifdef CONFIG_DRIVER_NL80211

src/drivers/drivers.mk

@@ -15,6 +15,11 @@ DRV_AP_LIBS =
 ifdef CONFIG_DRIVER_WIRED
 DRV_CFLAGS += -DCONFIG_DRIVER_WIRED
 DRV_OBJS += src/drivers/driver_wired.c
+NEED_DRV_WIRED_COMMON=1
+endif
+
+ifdef NEED_DRV_WIRED_COMMON
+DRV_OBJS += src/drivers/driver_wired_common.c
 endif
 
 ifdef CONFIG_DRIVER_NL80211