1 files changed, 131 insertions, 0 deletions

diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c
index 19ac2b985485..2ff908498924 100644
--- a/net/dcb/dcbnl.c
+++ b/net/dcb/dcbnl.c
@@ -66,6 +66,7 @@ static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
         [DCB_ATTR_PFC_STATE]   = {.type = NLA_U8},
         [DCB_ATTR_BCN]         = {.type = NLA_NESTED},
         [DCB_ATTR_APP]         = {.type = NLA_NESTED},
+        [DCB_ATTR_IEEE]        = {.type = NLA_NESTED},
 };
 
 /* DCB priority flow control to User Priority nested attributes */
@@ -167,6 +168,17 @@ static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = {
         [DCB_APP_ATTR_PRIORITY]     = {.type = NLA_U8},
 };
 
+/* IEEE 802.1Qaz nested attributes. */
+static const struct nla_policy dcbnl_ieee_policy[DCB_ATTR_IEEE_MAX + 1] = {
+        [DCB_ATTR_IEEE_ETS]         = {.len = sizeof(struct ieee_ets)},
+        [DCB_ATTR_IEEE_PFC]         = {.len = sizeof(struct ieee_pfc)},
+        [DCB_ATTR_IEEE_APP_TABLE]   = {.type = NLA_NESTED},
+};
+
+static const struct nla_policy dcbnl_ieee_app[DCB_ATTR_IEEE_APP_MAX + 1] = {
+        [DCB_ATTR_IEEE_APP]         = {.len = sizeof(struct dcb_app)},
+};
+
 /* standard netlink reply call */
 static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid,
                        u32 seq, u16 flags)
@@ -1118,6 +1130,117 @@ err:
         return ret;
 }
 
+/* Handle IEEE 802.1Qaz SET commands. If any requested operation can not
+ * be completed the entire msg is aborted and error value is returned.
+ * No attempt is made to reconcile the case where only part of the
+ * cmd can be completed.
+ */
+static int dcbnl_ieee_set(struct net_device *netdev, struct nlattr **tb,
+                          u32 pid, u32 seq, u16 flags)
+{
+        const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
+        struct nlattr *ieee[DCB_ATTR_IEEE_MAX + 1];
+        int err = -EOPNOTSUPP;
+
+        if (!ops)
+                goto err;
+
+        err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
+                               tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
+        if (err)
+                goto err;
+
+        if (ieee[DCB_ATTR_IEEE_ETS] && ops->ieee_setets) {
+                struct ieee_ets *ets = nla_data(ieee[DCB_ATTR_IEEE_ETS]);
+                err = ops->ieee_setets(netdev, ets);
+                if (err)
+                        goto err;
+        }
+
+        if (ieee[DCB_ATTR_IEEE_PFC] && ops->ieee_setets) {
+                struct ieee_pfc *pfc = nla_data(ieee[DCB_ATTR_IEEE_PFC]);
+                err = ops->ieee_setpfc(netdev, pfc);
+                if (err)
+                        goto err;
+        }
+
+        if (ieee[DCB_ATTR_IEEE_APP_TABLE] && ops->ieee_setapp) {
+                struct nlattr *attr;
+                int rem;
+
+                nla_for_each_nested(attr, ieee[DCB_ATTR_IEEE_APP_TABLE], rem) {
+                        struct dcb_app *app_data;
+                        if (nla_type(attr) != DCB_ATTR_IEEE_APP)
+                                continue;
+                        app_data = nla_data(attr);
+                        err = ops->ieee_setapp(netdev, app_data);
+                        if (err)
+                                goto err;
+                }
+        }
+
+err:
+        dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_SET, DCB_ATTR_IEEE,
+                    pid, seq, flags);
+        return err;
+}
+
+
+/* Handle IEEE 802.1Qaz GET commands. */
+static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb,
+                          u32 pid, u32 seq, u16 flags)
+{
+        struct sk_buff *skb;
+        struct nlmsghdr *nlh;
+        struct dcbmsg *dcb;
+        struct nlattr *ieee;
+        const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
+        int err;
+
+        if (!ops)
+                return -EOPNOTSUPP;
+
+        skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+        if (!skb)
+                return -ENOBUFS;
+
+        nlh = NLMSG_NEW(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+
+        dcb = NLMSG_DATA(nlh);
+        dcb->dcb_family = AF_UNSPEC;
+        dcb->cmd = DCB_CMD_IEEE_GET;
+
+        NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name);
+
+        ieee = nla_nest_start(skb, DCB_ATTR_IEEE);
+        if (!ieee)
+                goto nla_put_failure;
+
+        if (ops->ieee_getets) {
+                struct ieee_ets ets;
+                err = ops->ieee_getets(netdev, &ets);
+                if (!err)
+                        NLA_PUT(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets);
+        }
+
+        if (ops->ieee_getpfc) {
+                struct ieee_pfc pfc;
+                err = ops->ieee_getpfc(netdev, &pfc);
+                if (!err)
+                        NLA_PUT(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc);
+        }
+
+        nla_nest_end(skb, ieee);
+        nlmsg_end(skb, nlh);
+
+        return rtnl_unicast(skb, &init_net, pid);
+nla_put_failure:
+        nlmsg_cancel(skb, nlh);
+nlmsg_failure:
+        kfree_skb(skb);
+        return -1;
+}
+
 static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 {
         struct net *net = sock_net(skb->sk);
@@ -1223,6 +1346,14 @@ static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
                 ret = dcbnl_setapp(netdev, tb, pid, nlh->nlmsg_seq,
                                    nlh->nlmsg_flags);
                 goto out;
+        case DCB_CMD_IEEE_SET:
+                ret = dcbnl_ieee_set(netdev, tb, pid, nlh->nlmsg_seq,
+                                 nlh->nlmsg_flags);
+                goto out;
+        case DCB_CMD_IEEE_GET:
+                ret = dcbnl_ieee_get(netdev, tb, pid, nlh->nlmsg_seq,
+                                 nlh->nlmsg_flags);
+                goto out;
         default:
                 goto errout;
         }