Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit a9c2910a authored by Andrew Lunn's avatar Andrew Lunn Committed by Greg Kroah-Hartman
Browse files

Staging: batman-adv: Allow the MAC address to be set 



Some embedded devices have very limited sources of entropy for the
random number generator. It has been observed that the random MAC
address on the interface bat0 is not always random. When testing with
a collection of identical hardware, sometimes the bat0 device the same
MAC address on multiple devices, causing mayhem. This patch allows the
MAC address to be set by the user.

Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarSimon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent e7017195

drivers/staging/batman-adv/soft-interface.c

+11 −2
Original line number Diff line number Diff line
@@ -145,9 +145,18 @@ struct net_device_stats *interface_stats(struct net_device *dev) 
	return &priv->stats;

}



int interface_set_mac_addr(struct net_device *dev, void *addr)

int interface_set_mac_addr(struct net_device *dev, void *p)

{

	return -EBUSY;

	struct sockaddr *addr = p;



	if (!is_valid_ether_addr(addr->sa_data))

		return -EADDRNOTAVAIL;



	hna_local_remove(dev->dev_addr, "mac address changed");

	memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);

	hna_local_add(dev->dev_addr);



	return 0;

}



int interface_change_mtu(struct net_device *dev, int new_mtu)

drivers/staging/batman-adv/translation-table.c

+15 −0
Original line number Diff line number Diff line
@@ -211,6 +211,21 @@ static void hna_local_del(struct hna_local_entry *hna_local_entry, 
	_hna_local_del(hna_local_entry);

}



void hna_local_remove(uint8_t *addr, char *message)

{

	struct hna_local_entry *hna_local_entry;

	unsigned long flags;



	spin_lock_irqsave(&hna_local_hash_lock, flags);



	hna_local_entry = (struct hna_local_entry *)

		hash_find(hna_local_hash, addr);

	if (hna_local_entry)

		hna_local_del(hna_local_entry, message);



	spin_unlock_irqrestore(&hna_local_hash_lock, flags);

}



void hna_local_purge(struct work_struct *work)

{

	struct hna_local_entry *hna_local_entry;

drivers/staging/batman-adv/translation-table.h

+1 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 


int hna_local_init(void);

void hna_local_add(uint8_t *addr);

void hna_local_remove(uint8_t *addr, char *message);

int hna_local_fill_buffer(unsigned char *buff, int buff_len);

int hna_local_fill_buffer_text(unsigned char *buff, int buff_len);

void hna_local_purge(struct work_struct *work);