You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
2.7 KiB
64 lines
2.7 KiB
From 455f3e76cfc0d893585a5f358b9ddbe9c1e1e53b Mon Sep 17 00:00:00 2001
|
|
From: Arend Van Spriel <arend.vanspriel@broadcom.com>
|
|
Date: Wed, 28 Feb 2018 21:15:20 +0100
|
|
Subject: [PATCH] brcmfmac: fix P2P_DEVICE ethernet address generation
|
|
|
|
The firmware has a requirement that the P2P_DEVICE address should
|
|
be different from the address of the primary interface. When not
|
|
specified by user-space, the driver generates the MAC address for
|
|
the P2P_DEVICE interface using the MAC address of the primary
|
|
interface and setting the locally administered bit. However, the MAC
|
|
address of the primary interface may already have that bit set causing
|
|
the creation of the P2P_DEVICE interface to fail with -EBUSY. Fix this
|
|
by using a random address instead to determine the P2P_DEVICE address.
|
|
|
|
Cc: stable@vger.kernel.org # 3.10.y
|
|
Reported-by: Hans de Goede <hdegoede@redhat.com>
|
|
Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com>
|
|
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com>
|
|
Reviewed-by: Franky Lin <franky.lin@broadcom.com>
|
|
Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
|
|
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
|
|
---
|
|
.../net/wireless/broadcom/brcm80211/brcmfmac/p2p.c | 24 ++++++++++------------
|
|
1 file changed, 11 insertions(+), 13 deletions(-)
|
|
|
|
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
|
|
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
|
|
@@ -462,25 +462,23 @@ static int brcmf_p2p_set_firmware(struct
|
|
* @dev_addr: optional device address.
|
|
*
|
|
* P2P needs mac addresses for P2P device and interface. If no device
|
|
- * address it specified, these are derived from the primary net device, ie.
|
|
- * the permanent ethernet address of the device.
|
|
+ * address it specified, these are derived from a random ethernet
|
|
+ * address.
|
|
*/
|
|
static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p, u8 *dev_addr)
|
|
{
|
|
- struct brcmf_if *pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp;
|
|
- bool local_admin = false;
|
|
+ bool random_addr = false;
|
|
|
|
- if (!dev_addr || is_zero_ether_addr(dev_addr)) {
|
|
- dev_addr = pri_ifp->mac_addr;
|
|
- local_admin = true;
|
|
- }
|
|
+ if (!dev_addr || is_zero_ether_addr(dev_addr))
|
|
+ random_addr = true;
|
|
|
|
- /* Generate the P2P Device Address. This consists of the device's
|
|
- * primary MAC address with the locally administered bit set.
|
|
+ /* Generate the P2P Device Address obtaining a random ethernet
|
|
+ * address with the locally administered bit set.
|
|
*/
|
|
- memcpy(p2p->dev_addr, dev_addr, ETH_ALEN);
|
|
- if (local_admin)
|
|
- p2p->dev_addr[0] |= 0x02;
|
|
+ if (random_addr)
|
|
+ eth_random_addr(p2p->dev_addr);
|
|
+ else
|
|
+ memcpy(p2p->dev_addr, dev_addr, ETH_ALEN);
|
|
|
|
/* Generate the P2P Interface Address. If the discovery and connection
|
|
* BSSCFGs need to simultaneously co-exist, then this address must be
|
|
|