aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/ethernet/intel/ixgbevf/vf.c
diff options
context:
space:
mode:
authorHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>2015-08-28 06:59:03 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2015-10-23 05:52:26 -0700
commit8443c1a4b192089e62642d847ebac3e4d15134c3 (patch)
treeff4cdd7c9cb594e103086418c0e9cd8592757c1d /drivers/net/ethernet/intel/ixgbevf/vf.c
parent54011e4db839504791cf8317fc48949c683587d4 (diff)
downloadlinux-linaro-stable-8443c1a4b192089e62642d847ebac3e4d15134c3.tar.gz
ixgbe, ixgbevf: Add new mbox API xcast mode
The limitation of the number of multicast address for VF is not enough for the large scale server with SR-IOV feature. IPv6 requires the multicast MAC address for each IP address to handle the Neighbor Solicitation message. We couldn't assign over 30 IPv6 addresses to a single VF. This patch introduces the new mailbox API, IXGBE_VF_UPDATE_XCAST_MODE, to update multicast mode of VF. This adds 3 modes; - NONE only L2 exact match addresses or Flow Director enabled - MULTI BAM and ROMPE set - ALLMULTI BAM, ROMPE and MPE set If a guest VF user wants over 30 MAC multicast addresses, set IFF_ALLMULTI to request PF to update xcast mode to enable VF multicast promiscuous mode. On the other hand, enabling VF multicast promiscuous mode may affect security and performance in the network of the NIC. Only trusted VF can enable multicast promiscuous mode. The behavior of untrusted VF is the same as previous version. Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbevf/vf.c')
-rw-r--r--drivers/net/ethernet/intel/ixgbevf/vf.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ixgbevf/vf.c b/drivers/net/ethernet/intel/ixgbevf/vf.c
index d1339b050627..427f3605cbfc 100644
--- a/drivers/net/ethernet/intel/ixgbevf/vf.c
+++ b/drivers/net/ethernet/intel/ixgbevf/vf.c
@@ -469,6 +469,46 @@ static s32 ixgbevf_update_mc_addr_list_vf(struct ixgbe_hw *hw,
}
/**
+ * ixgbevf_update_xcast_mode - Update Multicast mode
+ * @hw: pointer to the HW structure
+ * @netdev: pointer to net device structure
+ * @xcast_mode: new multicast mode
+ *
+ * Updates the Multicast Mode of VF.
+ **/
+static s32 ixgbevf_update_xcast_mode(struct ixgbe_hw *hw,
+ struct net_device *netdev, int xcast_mode)
+{
+ struct ixgbe_mbx_info *mbx = &hw->mbx;
+ u32 msgbuf[2];
+ s32 err;
+
+ switch (hw->api_version) {
+ case ixgbe_mbox_api_12:
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ msgbuf[0] = IXGBE_VF_UPDATE_XCAST_MODE;
+ msgbuf[1] = xcast_mode;
+
+ err = mbx->ops.write_posted(hw, msgbuf, 2);
+ if (err)
+ return err;
+
+ err = mbx->ops.read_posted(hw, msgbuf, 2);
+ if (err)
+ return err;
+
+ msgbuf[0] &= ~IXGBE_VT_MSGTYPE_CTS;
+ if (msgbuf[0] == (IXGBE_VF_UPDATE_XCAST_MODE | IXGBE_VT_MSGTYPE_NACK))
+ return -EPERM;
+
+ return 0;
+}
+
+/**
* ixgbevf_set_vfta_vf - Set/Unset VLAN filter table address
* @hw: pointer to the HW structure
* @vlan: 12 bit VLAN ID
@@ -727,6 +767,7 @@ static const struct ixgbe_mac_operations ixgbevf_mac_ops = {
.check_link = ixgbevf_check_mac_link_vf,
.set_rar = ixgbevf_set_rar_vf,
.update_mc_addr_list = ixgbevf_update_mc_addr_list_vf,
+ .update_xcast_mode = ixgbevf_update_xcast_mode,
.set_uc_addr = ixgbevf_set_uc_addr_vf,
.set_vfta = ixgbevf_set_vfta_vf,
};