net: add DCNA attribute to the BCN interface for DCB

Adds the Backward Congestion Notification Address (BCNA) attribute to the
Backward Congestion Notification (BCN) interface for Data Center Bridging
(DCB), which was missing.  Receive the BCNA attribute in the ixgbe driver.
The BCNA attribute is for a switch to inform the endstation about the physical
port identification in order to support BCN on aggregated links.

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: Eric W Multanen <eric.w.multanen@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index fc88fc4d4f63..5dbfe5fdc0d6 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -140,6 +140,8 @@ static struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
         [DCB_BCN_ATTR_RP_6]         = {.type = NLA_U8},
         [DCB_BCN_ATTR_RP_7]         = {.type = NLA_U8},
         [DCB_BCN_ATTR_RP_ALL]       = {.type = NLA_FLAG},
+        [DCB_BCN_ATTR_BCNA_0]       = {.type = NLA_U32},
+        [DCB_BCN_ATTR_BCNA_1]       = {.type = NLA_U32},
         [DCB_BCN_ATTR_ALPHA]        = {.type = NLA_U32},
         [DCB_BCN_ATTR_BETA]         = {.type = NLA_U32},
         [DCB_BCN_ATTR_GD]           = {.type = NLA_U32},
@@ -922,7 +924,7 @@ static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
                         goto err_bcn;
         }
 
-        for (i = DCB_BCN_ATTR_ALPHA; i <= DCB_BCN_ATTR_RI; i++) {
+        for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
                 if (!getall && !bcn_tb[i])
                         continue;
 
@@ -980,7 +982,7 @@ static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
                         data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
         }
 
-        for (i = DCB_BCN_ATTR_ALPHA; i <= DCB_BCN_ATTR_RI; i++) {
+        for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
                 if (data[i] == NULL)
                         continue;
                 value_int = nla_get_u32(data[i]);