netdev - [net-next 7/8] ixgbe: Deny MACVLAN requests from VFs with admin set MAC

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue,  1 May 2012 01:51:08 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	Greg Rose <gregory.v.rose@...el.com>, netdev@...r.kernel.org,
	gospo@...hat.com, sassmann@...hat.com,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 7/8] ixgbe: Deny MACVLAN requests from VFs with admin set MAC

From: Greg Rose <gregory.v.rose@...el.com>

If the host VMM administrator has set the virtual function device's
MAC address then also deny VF requests for MACVLAN filters.

Signed-off-by: Greg Rose <gregory.v.rose@...el.com>
Tested-by: Garrett, Robert <robertx.e.garrett@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
index 88a58cb..3985637 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
@@ -635,6 +635,12 @@ static int ixgbe_rcv_msg_from_vf(struct ixgbe_adapter *adapter, u32 vf)
 		}
 		break;
 	case IXGBE_VF_SET_MACVLAN:
+		if (adapter->vfinfo[vf].pf_set_mac) {
+			e_warn(drv, "VF %d requested MACVLAN filter but is "
+				    "administratively denied\n", vf);
+			retval = -1;
+			break;
+		}
 		index = (msgbuf[0] & IXGBE_VT_MSGINFO_MASK) >>
 			IXGBE_VT_MSGINFO_SHIFT;
 		/*
-- 
1.7.7.6

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html