zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/net/dcb/Kconfig b/ap/os/linux/linux-3.4.x/net/dcb/Kconfig
new file mode 100644
index 0000000..4066d59
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/dcb/Kconfig
@@ -0,0 +1,22 @@
+config DCB
+ bool "Data Center Bridging support"
+ default n
+ ---help---
+ This enables support for configuring Data Center Bridging (DCB)
+ features on DCB capable Ethernet adapters via rtnetlink. Say 'Y'
+ if you have a DCB capable Ethernet adapter which supports this
+ interface and you are connected to a DCB capable switch.
+
+ DCB is a collection of Ethernet enhancements which allow DCB capable
+ NICs and switches to support network traffic with differing
+ requirements (highly reliable, no drops vs. best effort vs. low
+ latency) to co-exist on Ethernet.
+
+ DCB features include:
+ Enhanced Transmission Selection (aka Priority Grouping) - provides a
+ framework for assigning bandwidth guarantees to traffic classes.
+ Priority-based Flow Control (PFC) - a MAC control pause frame which
+ works at the granularity of the 802.1p priority instead of the
+ link (802.3x).
+
+ If unsure, say N.
diff --git a/ap/os/linux/linux-3.4.x/net/dcb/Makefile b/ap/os/linux/linux-3.4.x/net/dcb/Makefile
new file mode 100644
index 0000000..c1282c9
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/dcb/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_DCB) += dcbnl.o dcbevent.o
diff --git a/ap/os/linux/linux-3.4.x/net/dcb/dcbevent.c b/ap/os/linux/linux-3.4.x/net/dcb/dcbevent.c
new file mode 100644
index 0000000..1d9eb7c
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/dcb/dcbevent.c
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2010, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * Author: John Fastabend <john.r.fastabend@intel.com>
+ */
+
+#include <linux/rtnetlink.h>
+#include <linux/notifier.h>
+#include <linux/export.h>
+
+static ATOMIC_NOTIFIER_HEAD(dcbevent_notif_chain);
+
+int register_dcbevent_notifier(struct notifier_block *nb)
+{
+ return atomic_notifier_chain_register(&dcbevent_notif_chain, nb);
+}
+EXPORT_SYMBOL(register_dcbevent_notifier);
+
+int unregister_dcbevent_notifier(struct notifier_block *nb)
+{
+ return atomic_notifier_chain_unregister(&dcbevent_notif_chain, nb);
+}
+EXPORT_SYMBOL(unregister_dcbevent_notifier);
+
+int call_dcbevent_notifiers(unsigned long val, void *v)
+{
+ return atomic_notifier_call_chain(&dcbevent_notif_chain, val, v);
+}
diff --git a/ap/os/linux/linux-3.4.x/net/dcb/dcbnl.c b/ap/os/linux/linux-3.4.x/net/dcb/dcbnl.c
new file mode 100644
index 0000000..2f9517d
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/dcb/dcbnl.c
@@ -0,0 +1,2266 @@
+/*
+ * Copyright (c) 2008-2011, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * Author: Lucy Liu <lucy.liu@intel.com>
+ */
+
+#include <linux/netdevice.h>
+#include <linux/netlink.h>
+#include <linux/slab.h>
+#include <net/netlink.h>
+#include <net/rtnetlink.h>
+#include <linux/dcbnl.h>
+#include <net/dcbevent.h>
+#include <linux/rtnetlink.h>
+#include <linux/module.h>
+#include <net/sock.h>
+
+/**
+ * Data Center Bridging (DCB) is a collection of Ethernet enhancements
+ * intended to allow network traffic with differing requirements
+ * (highly reliable, no drops vs. best effort vs. low latency) to operate
+ * and co-exist on Ethernet. Current DCB features are:
+ *
+ * Enhanced Transmission Selection (aka Priority Grouping [PG]) - provides a
+ * framework for assigning bandwidth guarantees to traffic classes.
+ *
+ * Priority-based Flow Control (PFC) - provides a flow control mechanism which
+ * can work independently for each 802.1p priority.
+ *
+ * Congestion Notification - provides a mechanism for end-to-end congestion
+ * control for protocols which do not have built-in congestion management.
+ *
+ * More information about the emerging standards for these Ethernet features
+ * can be found at: http://www.ieee802.org/1/pages/dcbridges.html
+ *
+ * This file implements an rtnetlink interface to allow configuration of DCB
+ * features for capable devices.
+ */
+
+MODULE_AUTHOR("Lucy Liu, <lucy.liu@intel.com>");
+MODULE_DESCRIPTION("Data Center Bridging netlink interface");
+MODULE_LICENSE("GPL");
+
+/**************** DCB attribute policies *************************************/
+
+/* DCB netlink attributes policy */
+static const struct nla_policy dcbnl_rtnl_policy[DCB_ATTR_MAX + 1] = {
+ [DCB_ATTR_IFNAME] = {.type = NLA_NUL_STRING, .len = IFNAMSIZ - 1},
+ [DCB_ATTR_STATE] = {.type = NLA_U8},
+ [DCB_ATTR_PFC_CFG] = {.type = NLA_NESTED},
+ [DCB_ATTR_PG_CFG] = {.type = NLA_NESTED},
+ [DCB_ATTR_SET_ALL] = {.type = NLA_U8},
+ [DCB_ATTR_PERM_HWADDR] = {.type = NLA_FLAG},
+ [DCB_ATTR_CAP] = {.type = NLA_NESTED},
+ [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_ATTR_DCBX] = {.type = NLA_U8},
+ [DCB_ATTR_FEATCFG] = {.type = NLA_NESTED},
+};
+
+/* DCB priority flow control to User Priority nested attributes */
+static const struct nla_policy dcbnl_pfc_up_nest[DCB_PFC_UP_ATTR_MAX + 1] = {
+ [DCB_PFC_UP_ATTR_0] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_1] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_2] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_3] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_4] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_5] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_6] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_7] = {.type = NLA_U8},
+ [DCB_PFC_UP_ATTR_ALL] = {.type = NLA_FLAG},
+};
+
+/* DCB priority grouping nested attributes */
+static const struct nla_policy dcbnl_pg_nest[DCB_PG_ATTR_MAX + 1] = {
+ [DCB_PG_ATTR_TC_0] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_1] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_2] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_3] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_4] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_5] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_6] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_7] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_TC_ALL] = {.type = NLA_NESTED},
+ [DCB_PG_ATTR_BW_ID_0] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BW_ID_1] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BW_ID_2] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BW_ID_3] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BW_ID_4] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BW_ID_5] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BW_ID_6] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BW_ID_7] = {.type = NLA_U8},
+ [DCB_PG_ATTR_BW_ID_ALL] = {.type = NLA_FLAG},
+};
+
+/* DCB traffic class nested attributes. */
+static const struct nla_policy dcbnl_tc_param_nest[DCB_TC_ATTR_PARAM_MAX + 1] = {
+ [DCB_TC_ATTR_PARAM_PGID] = {.type = NLA_U8},
+ [DCB_TC_ATTR_PARAM_UP_MAPPING] = {.type = NLA_U8},
+ [DCB_TC_ATTR_PARAM_STRICT_PRIO] = {.type = NLA_U8},
+ [DCB_TC_ATTR_PARAM_BW_PCT] = {.type = NLA_U8},
+ [DCB_TC_ATTR_PARAM_ALL] = {.type = NLA_FLAG},
+};
+
+/* DCB capabilities nested attributes. */
+static const struct nla_policy dcbnl_cap_nest[DCB_CAP_ATTR_MAX + 1] = {
+ [DCB_CAP_ATTR_ALL] = {.type = NLA_FLAG},
+ [DCB_CAP_ATTR_PG] = {.type = NLA_U8},
+ [DCB_CAP_ATTR_PFC] = {.type = NLA_U8},
+ [DCB_CAP_ATTR_UP2TC] = {.type = NLA_U8},
+ [DCB_CAP_ATTR_PG_TCS] = {.type = NLA_U8},
+ [DCB_CAP_ATTR_PFC_TCS] = {.type = NLA_U8},
+ [DCB_CAP_ATTR_GSP] = {.type = NLA_U8},
+ [DCB_CAP_ATTR_BCN] = {.type = NLA_U8},
+ [DCB_CAP_ATTR_DCBX] = {.type = NLA_U8},
+};
+
+/* DCB capabilities nested attributes. */
+static const struct nla_policy dcbnl_numtcs_nest[DCB_NUMTCS_ATTR_MAX + 1] = {
+ [DCB_NUMTCS_ATTR_ALL] = {.type = NLA_FLAG},
+ [DCB_NUMTCS_ATTR_PG] = {.type = NLA_U8},
+ [DCB_NUMTCS_ATTR_PFC] = {.type = NLA_U8},
+};
+
+/* DCB BCN nested attributes. */
+static const struct nla_policy dcbnl_bcn_nest[DCB_BCN_ATTR_MAX + 1] = {
+ [DCB_BCN_ATTR_RP_0] = {.type = NLA_U8},
+ [DCB_BCN_ATTR_RP_1] = {.type = NLA_U8},
+ [DCB_BCN_ATTR_RP_2] = {.type = NLA_U8},
+ [DCB_BCN_ATTR_RP_3] = {.type = NLA_U8},
+ [DCB_BCN_ATTR_RP_4] = {.type = NLA_U8},
+ [DCB_BCN_ATTR_RP_5] = {.type = NLA_U8},
+ [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},
+ [DCB_BCN_ATTR_GI] = {.type = NLA_U32},
+ [DCB_BCN_ATTR_TMAX] = {.type = NLA_U32},
+ [DCB_BCN_ATTR_TD] = {.type = NLA_U32},
+ [DCB_BCN_ATTR_RMIN] = {.type = NLA_U32},
+ [DCB_BCN_ATTR_W] = {.type = NLA_U32},
+ [DCB_BCN_ATTR_RD] = {.type = NLA_U32},
+ [DCB_BCN_ATTR_RU] = {.type = NLA_U32},
+ [DCB_BCN_ATTR_WRTT] = {.type = NLA_U32},
+ [DCB_BCN_ATTR_RI] = {.type = NLA_U32},
+ [DCB_BCN_ATTR_C] = {.type = NLA_U32},
+ [DCB_BCN_ATTR_ALL] = {.type = NLA_FLAG},
+};
+
+/* DCB APP nested attributes. */
+static const struct nla_policy dcbnl_app_nest[DCB_APP_ATTR_MAX + 1] = {
+ [DCB_APP_ATTR_IDTYPE] = {.type = NLA_U8},
+ [DCB_APP_ATTR_ID] = {.type = NLA_U16},
+ [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)},
+};
+
+/* DCB number of traffic classes nested attributes. */
+static const struct nla_policy dcbnl_featcfg_nest[DCB_FEATCFG_ATTR_MAX + 1] = {
+ [DCB_FEATCFG_ATTR_ALL] = {.type = NLA_FLAG},
+ [DCB_FEATCFG_ATTR_PG] = {.type = NLA_U8},
+ [DCB_FEATCFG_ATTR_PFC] = {.type = NLA_U8},
+ [DCB_FEATCFG_ATTR_APP] = {.type = NLA_U8},
+};
+
+static LIST_HEAD(dcb_app_list);
+static DEFINE_SPINLOCK(dcb_lock);
+
+/* standard netlink reply call */
+static int dcbnl_reply(u8 value, u8 event, u8 cmd, u8 attr, u32 pid,
+ u32 seq, u16 flags)
+{
+ struct sk_buff *dcbnl_skb;
+ struct dcbmsg *dcb;
+ struct nlmsghdr *nlh;
+ int ret = -EINVAL;
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb)
+ return ret;
+
+ nlh = NLMSG_NEW(dcbnl_skb, pid, seq, event, sizeof(*dcb), flags);
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = cmd;
+ dcb->dcb_pad = 0;
+
+ ret = nla_put_u8(dcbnl_skb, attr, value);
+ if (ret)
+ goto err;
+
+ /* end the message, assign the nlmsg_len. */
+ nlmsg_end(dcbnl_skb, nlh);
+ ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
+ if (ret)
+ return -EINVAL;
+
+ return 0;
+nlmsg_failure:
+err:
+ kfree_skb(dcbnl_skb);
+ return ret;
+}
+
+static int dcbnl_getstate(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ int ret = -EINVAL;
+
+ /* if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->getstate) */
+ if (!netdev->dcbnl_ops->getstate)
+ return ret;
+
+ ret = dcbnl_reply(netdev->dcbnl_ops->getstate(netdev), RTM_GETDCB,
+ DCB_CMD_GSTATE, DCB_ATTR_STATE, pid, seq, flags);
+
+ return ret;
+}
+
+static int dcbnl_getpfccfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct sk_buff *dcbnl_skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1], *nest;
+ u8 value;
+ int ret = -EINVAL;
+ int i;
+ int getall = 0;
+
+ if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->getpfccfg)
+ return ret;
+
+ ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
+ tb[DCB_ATTR_PFC_CFG],
+ dcbnl_pfc_up_nest);
+ if (ret)
+ goto err_out;
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb)
+ goto err_out;
+
+ nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = DCB_CMD_PFC_GCFG;
+
+ nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PFC_CFG);
+ if (!nest)
+ goto err;
+
+ if (data[DCB_PFC_UP_ATTR_ALL])
+ getall = 1;
+
+ for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
+ if (!getall && !data[i])
+ continue;
+
+ netdev->dcbnl_ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0,
+ &value);
+ ret = nla_put_u8(dcbnl_skb, i, value);
+
+ if (ret) {
+ nla_nest_cancel(dcbnl_skb, nest);
+ goto err;
+ }
+ }
+ nla_nest_end(dcbnl_skb, nest);
+
+ nlmsg_end(dcbnl_skb, nlh);
+
+ ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
+ if (ret)
+ goto err_out;
+
+ return 0;
+nlmsg_failure:
+err:
+ kfree_skb(dcbnl_skb);
+err_out:
+ return -EINVAL;
+}
+
+static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct sk_buff *dcbnl_skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ u8 perm_addr[MAX_ADDR_LEN];
+ int ret = -EINVAL;
+
+ if (!netdev->dcbnl_ops->getpermhwaddr)
+ return ret;
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb)
+ goto err_out;
+
+ nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = DCB_CMD_GPERM_HWADDR;
+
+ memset(perm_addr, 0, sizeof(perm_addr));
+ netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr);
+
+ ret = nla_put(dcbnl_skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr),
+ perm_addr);
+
+ nlmsg_end(dcbnl_skb, nlh);
+
+ ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
+ if (ret)
+ goto err_out;
+
+ return 0;
+
+nlmsg_failure:
+ kfree_skb(dcbnl_skb);
+err_out:
+ return -EINVAL;
+}
+
+static int dcbnl_getcap(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct sk_buff *dcbnl_skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ struct nlattr *data[DCB_CAP_ATTR_MAX + 1], *nest;
+ u8 value;
+ int ret = -EINVAL;
+ int i;
+ int getall = 0;
+
+ if (!tb[DCB_ATTR_CAP] || !netdev->dcbnl_ops->getcap)
+ return ret;
+
+ ret = nla_parse_nested(data, DCB_CAP_ATTR_MAX, tb[DCB_ATTR_CAP],
+ dcbnl_cap_nest);
+ if (ret)
+ goto err_out;
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb)
+ goto err_out;
+
+ nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = DCB_CMD_GCAP;
+
+ nest = nla_nest_start(dcbnl_skb, DCB_ATTR_CAP);
+ if (!nest)
+ goto err;
+
+ if (data[DCB_CAP_ATTR_ALL])
+ getall = 1;
+
+ for (i = DCB_CAP_ATTR_ALL+1; i <= DCB_CAP_ATTR_MAX; i++) {
+ if (!getall && !data[i])
+ continue;
+
+ if (!netdev->dcbnl_ops->getcap(netdev, i, &value)) {
+ ret = nla_put_u8(dcbnl_skb, i, value);
+
+ if (ret) {
+ nla_nest_cancel(dcbnl_skb, nest);
+ goto err;
+ }
+ }
+ }
+ nla_nest_end(dcbnl_skb, nest);
+
+ nlmsg_end(dcbnl_skb, nlh);
+
+ ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
+ if (ret)
+ goto err_out;
+
+ return 0;
+nlmsg_failure:
+err:
+ kfree_skb(dcbnl_skb);
+err_out:
+ return -EINVAL;
+}
+
+static int dcbnl_getnumtcs(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct sk_buff *dcbnl_skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1], *nest;
+ u8 value;
+ int ret = -EINVAL;
+ int i;
+ int getall = 0;
+
+ if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->getnumtcs)
+ return ret;
+
+ ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
+ dcbnl_numtcs_nest);
+ if (ret) {
+ ret = -EINVAL;
+ goto err_out;
+ }
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb) {
+ ret = -EINVAL;
+ goto err_out;
+ }
+
+ nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = DCB_CMD_GNUMTCS;
+
+ nest = nla_nest_start(dcbnl_skb, DCB_ATTR_NUMTCS);
+ if (!nest) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ if (data[DCB_NUMTCS_ATTR_ALL])
+ getall = 1;
+
+ for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
+ if (!getall && !data[i])
+ continue;
+
+ ret = netdev->dcbnl_ops->getnumtcs(netdev, i, &value);
+ if (!ret) {
+ ret = nla_put_u8(dcbnl_skb, i, value);
+
+ if (ret) {
+ nla_nest_cancel(dcbnl_skb, nest);
+ ret = -EINVAL;
+ goto err;
+ }
+ } else {
+ goto err;
+ }
+ }
+ nla_nest_end(dcbnl_skb, nest);
+
+ nlmsg_end(dcbnl_skb, nlh);
+
+ ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
+ if (ret) {
+ ret = -EINVAL;
+ goto err_out;
+ }
+
+ return 0;
+nlmsg_failure:
+err:
+ kfree_skb(dcbnl_skb);
+err_out:
+ return ret;
+}
+
+static int dcbnl_setnumtcs(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct nlattr *data[DCB_NUMTCS_ATTR_MAX + 1];
+ int ret = -EINVAL;
+ u8 value;
+ int i;
+
+ if (!tb[DCB_ATTR_NUMTCS] || !netdev->dcbnl_ops->setnumtcs)
+ return ret;
+
+ ret = nla_parse_nested(data, DCB_NUMTCS_ATTR_MAX, tb[DCB_ATTR_NUMTCS],
+ dcbnl_numtcs_nest);
+
+ if (ret) {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ for (i = DCB_NUMTCS_ATTR_ALL+1; i <= DCB_NUMTCS_ATTR_MAX; i++) {
+ if (data[i] == NULL)
+ continue;
+
+ value = nla_get_u8(data[i]);
+
+ ret = netdev->dcbnl_ops->setnumtcs(netdev, i, value);
+
+ if (ret)
+ goto operr;
+ }
+
+operr:
+ ret = dcbnl_reply(!!ret, RTM_SETDCB, DCB_CMD_SNUMTCS,
+ DCB_ATTR_NUMTCS, pid, seq, flags);
+
+err:
+ return ret;
+}
+
+static int dcbnl_getpfcstate(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ int ret = -EINVAL;
+
+ if (!netdev->dcbnl_ops->getpfcstate)
+ return ret;
+
+ ret = dcbnl_reply(netdev->dcbnl_ops->getpfcstate(netdev), RTM_GETDCB,
+ DCB_CMD_PFC_GSTATE, DCB_ATTR_PFC_STATE,
+ pid, seq, flags);
+
+ return ret;
+}
+
+static int dcbnl_setpfcstate(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ int ret = -EINVAL;
+ u8 value;
+
+ if (!tb[DCB_ATTR_PFC_STATE] || !netdev->dcbnl_ops->setpfcstate)
+ return ret;
+
+ value = nla_get_u8(tb[DCB_ATTR_PFC_STATE]);
+
+ netdev->dcbnl_ops->setpfcstate(netdev, value);
+
+ ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SSTATE, DCB_ATTR_PFC_STATE,
+ pid, seq, flags);
+
+ return ret;
+}
+
+static int dcbnl_getapp(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct sk_buff *dcbnl_skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ struct nlattr *app_nest;
+ struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
+ u16 id;
+ u8 up, idtype;
+ int ret = -EINVAL;
+
+ if (!tb[DCB_ATTR_APP])
+ goto out;
+
+ ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
+ dcbnl_app_nest);
+ if (ret)
+ goto out;
+
+ ret = -EINVAL;
+ /* all must be non-null */
+ if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
+ (!app_tb[DCB_APP_ATTR_ID]))
+ goto out;
+
+ /* either by eth type or by socket number */
+ idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
+ if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
+ (idtype != DCB_APP_IDTYPE_PORTNUM))
+ goto out;
+
+ id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
+
+ if (netdev->dcbnl_ops->getapp) {
+ up = netdev->dcbnl_ops->getapp(netdev, idtype, id);
+ } else {
+ struct dcb_app app = {
+ .selector = idtype,
+ .protocol = id,
+ };
+ up = dcb_getapp(netdev, &app);
+ }
+
+ /* send this back */
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb)
+ goto out;
+
+ nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = DCB_CMD_GAPP;
+
+ app_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_APP);
+ if (!app_nest)
+ goto out_cancel;
+
+ ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_IDTYPE, idtype);
+ if (ret)
+ goto out_cancel;
+
+ ret = nla_put_u16(dcbnl_skb, DCB_APP_ATTR_ID, id);
+ if (ret)
+ goto out_cancel;
+
+ ret = nla_put_u8(dcbnl_skb, DCB_APP_ATTR_PRIORITY, up);
+ if (ret)
+ goto out_cancel;
+
+ nla_nest_end(dcbnl_skb, app_nest);
+ nlmsg_end(dcbnl_skb, nlh);
+
+ ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
+ if (ret)
+ goto nlmsg_failure;
+
+ goto out;
+
+out_cancel:
+ nla_nest_cancel(dcbnl_skb, app_nest);
+nlmsg_failure:
+ kfree_skb(dcbnl_skb);
+out:
+ return ret;
+}
+
+static int dcbnl_setapp(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ int err, ret = -EINVAL;
+ u16 id;
+ u8 up, idtype;
+ struct nlattr *app_tb[DCB_APP_ATTR_MAX + 1];
+
+ if (!tb[DCB_ATTR_APP])
+ goto out;
+
+ ret = nla_parse_nested(app_tb, DCB_APP_ATTR_MAX, tb[DCB_ATTR_APP],
+ dcbnl_app_nest);
+ if (ret)
+ goto out;
+
+ ret = -EINVAL;
+ /* all must be non-null */
+ if ((!app_tb[DCB_APP_ATTR_IDTYPE]) ||
+ (!app_tb[DCB_APP_ATTR_ID]) ||
+ (!app_tb[DCB_APP_ATTR_PRIORITY]))
+ goto out;
+
+ /* either by eth type or by socket number */
+ idtype = nla_get_u8(app_tb[DCB_APP_ATTR_IDTYPE]);
+ if ((idtype != DCB_APP_IDTYPE_ETHTYPE) &&
+ (idtype != DCB_APP_IDTYPE_PORTNUM))
+ goto out;
+
+ id = nla_get_u16(app_tb[DCB_APP_ATTR_ID]);
+ up = nla_get_u8(app_tb[DCB_APP_ATTR_PRIORITY]);
+
+ if (netdev->dcbnl_ops->setapp) {
+ err = netdev->dcbnl_ops->setapp(netdev, idtype, id, up);
+ } else {
+ struct dcb_app app;
+ app.selector = idtype;
+ app.protocol = id;
+ app.priority = up;
+ err = dcb_setapp(netdev, &app);
+ }
+
+ ret = dcbnl_reply(err, RTM_SETDCB, DCB_CMD_SAPP, DCB_ATTR_APP,
+ pid, seq, flags);
+out:
+ return ret;
+}
+
+static int __dcbnl_pg_getcfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags, int dir)
+{
+ struct sk_buff *dcbnl_skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ struct nlattr *pg_nest, *param_nest, *data;
+ struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
+ struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
+ u8 prio, pgid, tc_pct, up_map;
+ int ret = -EINVAL;
+ int getall = 0;
+ int i;
+
+ if (!tb[DCB_ATTR_PG_CFG] ||
+ !netdev->dcbnl_ops->getpgtccfgtx ||
+ !netdev->dcbnl_ops->getpgtccfgrx ||
+ !netdev->dcbnl_ops->getpgbwgcfgtx ||
+ !netdev->dcbnl_ops->getpgbwgcfgrx)
+ return ret;
+
+ ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
+ tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
+
+ if (ret)
+ goto err_out;
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb)
+ goto err_out;
+
+ nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = (dir) ? DCB_CMD_PGRX_GCFG : DCB_CMD_PGTX_GCFG;
+
+ pg_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_PG_CFG);
+ if (!pg_nest)
+ goto err;
+
+ if (pg_tb[DCB_PG_ATTR_TC_ALL])
+ getall = 1;
+
+ for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
+ if (!getall && !pg_tb[i])
+ continue;
+
+ if (pg_tb[DCB_PG_ATTR_TC_ALL])
+ data = pg_tb[DCB_PG_ATTR_TC_ALL];
+ else
+ data = pg_tb[i];
+ ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
+ data, dcbnl_tc_param_nest);
+ if (ret)
+ goto err_pg;
+
+ param_nest = nla_nest_start(dcbnl_skb, i);
+ if (!param_nest)
+ goto err_pg;
+
+ pgid = DCB_ATTR_VALUE_UNDEFINED;
+ prio = DCB_ATTR_VALUE_UNDEFINED;
+ tc_pct = DCB_ATTR_VALUE_UNDEFINED;
+ up_map = DCB_ATTR_VALUE_UNDEFINED;
+
+ if (dir) {
+ /* Rx */
+ netdev->dcbnl_ops->getpgtccfgrx(netdev,
+ i - DCB_PG_ATTR_TC_0, &prio,
+ &pgid, &tc_pct, &up_map);
+ } else {
+ /* Tx */
+ netdev->dcbnl_ops->getpgtccfgtx(netdev,
+ i - DCB_PG_ATTR_TC_0, &prio,
+ &pgid, &tc_pct, &up_map);
+ }
+
+ if (param_tb[DCB_TC_ATTR_PARAM_PGID] ||
+ param_tb[DCB_TC_ATTR_PARAM_ALL]) {
+ ret = nla_put_u8(dcbnl_skb,
+ DCB_TC_ATTR_PARAM_PGID, pgid);
+ if (ret)
+ goto err_param;
+ }
+ if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING] ||
+ param_tb[DCB_TC_ATTR_PARAM_ALL]) {
+ ret = nla_put_u8(dcbnl_skb,
+ DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
+ if (ret)
+ goto err_param;
+ }
+ if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO] ||
+ param_tb[DCB_TC_ATTR_PARAM_ALL]) {
+ ret = nla_put_u8(dcbnl_skb,
+ DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
+ if (ret)
+ goto err_param;
+ }
+ if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT] ||
+ param_tb[DCB_TC_ATTR_PARAM_ALL]) {
+ ret = nla_put_u8(dcbnl_skb, DCB_TC_ATTR_PARAM_BW_PCT,
+ tc_pct);
+ if (ret)
+ goto err_param;
+ }
+ nla_nest_end(dcbnl_skb, param_nest);
+ }
+
+ if (pg_tb[DCB_PG_ATTR_BW_ID_ALL])
+ getall = 1;
+ else
+ getall = 0;
+
+ for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
+ if (!getall && !pg_tb[i])
+ continue;
+
+ tc_pct = DCB_ATTR_VALUE_UNDEFINED;
+
+ if (dir) {
+ /* Rx */
+ netdev->dcbnl_ops->getpgbwgcfgrx(netdev,
+ i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
+ } else {
+ /* Tx */
+ netdev->dcbnl_ops->getpgbwgcfgtx(netdev,
+ i - DCB_PG_ATTR_BW_ID_0, &tc_pct);
+ }
+ ret = nla_put_u8(dcbnl_skb, i, tc_pct);
+
+ if (ret)
+ goto err_pg;
+ }
+
+ nla_nest_end(dcbnl_skb, pg_nest);
+
+ nlmsg_end(dcbnl_skb, nlh);
+
+ ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
+ if (ret)
+ goto err_out;
+
+ return 0;
+
+err_param:
+ nla_nest_cancel(dcbnl_skb, param_nest);
+err_pg:
+ nla_nest_cancel(dcbnl_skb, pg_nest);
+nlmsg_failure:
+err:
+ kfree_skb(dcbnl_skb);
+err_out:
+ ret = -EINVAL;
+ return ret;
+}
+
+static int dcbnl_pgtx_getcfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 0);
+}
+
+static int dcbnl_pgrx_getcfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ return __dcbnl_pg_getcfg(netdev, tb, pid, seq, flags, 1);
+}
+
+static int dcbnl_setstate(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ int ret = -EINVAL;
+ u8 value;
+
+ if (!tb[DCB_ATTR_STATE] || !netdev->dcbnl_ops->setstate)
+ return ret;
+
+ value = nla_get_u8(tb[DCB_ATTR_STATE]);
+
+ ret = dcbnl_reply(netdev->dcbnl_ops->setstate(netdev, value),
+ RTM_SETDCB, DCB_CMD_SSTATE, DCB_ATTR_STATE,
+ pid, seq, flags);
+
+ return ret;
+}
+
+static int dcbnl_setpfccfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct nlattr *data[DCB_PFC_UP_ATTR_MAX + 1];
+ int i;
+ int ret = -EINVAL;
+ u8 value;
+
+ if (!tb[DCB_ATTR_PFC_CFG] || !netdev->dcbnl_ops->setpfccfg)
+ return ret;
+
+ ret = nla_parse_nested(data, DCB_PFC_UP_ATTR_MAX,
+ tb[DCB_ATTR_PFC_CFG],
+ dcbnl_pfc_up_nest);
+ if (ret)
+ goto err;
+
+ for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
+ if (data[i] == NULL)
+ continue;
+ value = nla_get_u8(data[i]);
+ netdev->dcbnl_ops->setpfccfg(netdev,
+ data[i]->nla_type - DCB_PFC_UP_ATTR_0, value);
+ }
+
+ ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_PFC_SCFG, DCB_ATTR_PFC_CFG,
+ pid, seq, flags);
+err:
+ return ret;
+}
+
+static int dcbnl_setall(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ int ret = -EINVAL;
+
+ if (!tb[DCB_ATTR_SET_ALL] || !netdev->dcbnl_ops->setall)
+ return ret;
+
+ ret = dcbnl_reply(netdev->dcbnl_ops->setall(netdev), RTM_SETDCB,
+ DCB_CMD_SET_ALL, DCB_ATTR_SET_ALL, pid, seq, flags);
+
+ return ret;
+}
+
+static int __dcbnl_pg_setcfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags, int dir)
+{
+ struct nlattr *pg_tb[DCB_PG_ATTR_MAX + 1];
+ struct nlattr *param_tb[DCB_TC_ATTR_PARAM_MAX + 1];
+ int ret = -EINVAL;
+ int i;
+ u8 pgid;
+ u8 up_map;
+ u8 prio;
+ u8 tc_pct;
+
+ if (!tb[DCB_ATTR_PG_CFG] ||
+ !netdev->dcbnl_ops->setpgtccfgtx ||
+ !netdev->dcbnl_ops->setpgtccfgrx ||
+ !netdev->dcbnl_ops->setpgbwgcfgtx ||
+ !netdev->dcbnl_ops->setpgbwgcfgrx)
+ return ret;
+
+ ret = nla_parse_nested(pg_tb, DCB_PG_ATTR_MAX,
+ tb[DCB_ATTR_PG_CFG], dcbnl_pg_nest);
+ if (ret)
+ goto err;
+
+ for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
+ if (!pg_tb[i])
+ continue;
+
+ ret = nla_parse_nested(param_tb, DCB_TC_ATTR_PARAM_MAX,
+ pg_tb[i], dcbnl_tc_param_nest);
+ if (ret)
+ goto err;
+
+ pgid = DCB_ATTR_VALUE_UNDEFINED;
+ prio = DCB_ATTR_VALUE_UNDEFINED;
+ tc_pct = DCB_ATTR_VALUE_UNDEFINED;
+ up_map = DCB_ATTR_VALUE_UNDEFINED;
+
+ if (param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO])
+ prio =
+ nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_STRICT_PRIO]);
+
+ if (param_tb[DCB_TC_ATTR_PARAM_PGID])
+ pgid = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_PGID]);
+
+ if (param_tb[DCB_TC_ATTR_PARAM_BW_PCT])
+ tc_pct = nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_BW_PCT]);
+
+ if (param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING])
+ up_map =
+ nla_get_u8(param_tb[DCB_TC_ATTR_PARAM_UP_MAPPING]);
+
+ /* dir: Tx = 0, Rx = 1 */
+ if (dir) {
+ /* Rx */
+ netdev->dcbnl_ops->setpgtccfgrx(netdev,
+ i - DCB_PG_ATTR_TC_0,
+ prio, pgid, tc_pct, up_map);
+ } else {
+ /* Tx */
+ netdev->dcbnl_ops->setpgtccfgtx(netdev,
+ i - DCB_PG_ATTR_TC_0,
+ prio, pgid, tc_pct, up_map);
+ }
+ }
+
+ for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
+ if (!pg_tb[i])
+ continue;
+
+ tc_pct = nla_get_u8(pg_tb[i]);
+
+ /* dir: Tx = 0, Rx = 1 */
+ if (dir) {
+ /* Rx */
+ netdev->dcbnl_ops->setpgbwgcfgrx(netdev,
+ i - DCB_PG_ATTR_BW_ID_0, tc_pct);
+ } else {
+ /* Tx */
+ netdev->dcbnl_ops->setpgbwgcfgtx(netdev,
+ i - DCB_PG_ATTR_BW_ID_0, tc_pct);
+ }
+ }
+
+ ret = dcbnl_reply(0, RTM_SETDCB,
+ (dir ? DCB_CMD_PGRX_SCFG : DCB_CMD_PGTX_SCFG),
+ DCB_ATTR_PG_CFG, pid, seq, flags);
+
+err:
+ return ret;
+}
+
+static int dcbnl_pgtx_setcfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 0);
+}
+
+static int dcbnl_pgrx_setcfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ return __dcbnl_pg_setcfg(netdev, tb, pid, seq, flags, 1);
+}
+
+static int dcbnl_bcn_getcfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct sk_buff *dcbnl_skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ struct nlattr *bcn_nest;
+ struct nlattr *bcn_tb[DCB_BCN_ATTR_MAX + 1];
+ u8 value_byte;
+ u32 value_integer;
+ int ret = -EINVAL;
+ bool getall = false;
+ int i;
+
+ if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->getbcnrp ||
+ !netdev->dcbnl_ops->getbcncfg)
+ return ret;
+
+ ret = nla_parse_nested(bcn_tb, DCB_BCN_ATTR_MAX,
+ tb[DCB_ATTR_BCN], dcbnl_bcn_nest);
+
+ if (ret)
+ goto err_out;
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb)
+ goto err_out;
+
+ nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = DCB_CMD_BCN_GCFG;
+
+ bcn_nest = nla_nest_start(dcbnl_skb, DCB_ATTR_BCN);
+ if (!bcn_nest)
+ goto err;
+
+ if (bcn_tb[DCB_BCN_ATTR_ALL])
+ getall = true;
+
+ for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
+ if (!getall && !bcn_tb[i])
+ continue;
+
+ netdev->dcbnl_ops->getbcnrp(netdev, i - DCB_BCN_ATTR_RP_0,
+ &value_byte);
+ ret = nla_put_u8(dcbnl_skb, i, value_byte);
+ if (ret)
+ goto err_bcn;
+ }
+
+ for (i = DCB_BCN_ATTR_BCNA_0; i <= DCB_BCN_ATTR_RI; i++) {
+ if (!getall && !bcn_tb[i])
+ continue;
+
+ netdev->dcbnl_ops->getbcncfg(netdev, i,
+ &value_integer);
+ ret = nla_put_u32(dcbnl_skb, i, value_integer);
+ if (ret)
+ goto err_bcn;
+ }
+
+ nla_nest_end(dcbnl_skb, bcn_nest);
+
+ nlmsg_end(dcbnl_skb, nlh);
+
+ ret = rtnl_unicast(dcbnl_skb, &init_net, pid);
+ if (ret)
+ goto err_out;
+
+ return 0;
+
+err_bcn:
+ nla_nest_cancel(dcbnl_skb, bcn_nest);
+nlmsg_failure:
+err:
+ kfree_skb(dcbnl_skb);
+err_out:
+ ret = -EINVAL;
+ return ret;
+}
+
+static int dcbnl_bcn_setcfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct nlattr *data[DCB_BCN_ATTR_MAX + 1];
+ int i;
+ int ret = -EINVAL;
+ u8 value_byte;
+ u32 value_int;
+
+ if (!tb[DCB_ATTR_BCN] || !netdev->dcbnl_ops->setbcncfg ||
+ !netdev->dcbnl_ops->setbcnrp)
+ return ret;
+
+ ret = nla_parse_nested(data, DCB_BCN_ATTR_MAX,
+ tb[DCB_ATTR_BCN],
+ dcbnl_pfc_up_nest);
+ if (ret)
+ goto err;
+
+ for (i = DCB_BCN_ATTR_RP_0; i <= DCB_BCN_ATTR_RP_7; i++) {
+ if (data[i] == NULL)
+ continue;
+ value_byte = nla_get_u8(data[i]);
+ netdev->dcbnl_ops->setbcnrp(netdev,
+ data[i]->nla_type - DCB_BCN_ATTR_RP_0, value_byte);
+ }
+
+ 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]);
+ netdev->dcbnl_ops->setbcncfg(netdev,
+ i, value_int);
+ }
+
+ ret = dcbnl_reply(0, RTM_SETDCB, DCB_CMD_BCN_SCFG, DCB_ATTR_BCN,
+ pid, seq, flags);
+err:
+ return ret;
+}
+
+static int dcbnl_build_peer_app(struct net_device *netdev, struct sk_buff* skb,
+ int app_nested_type, int app_info_type,
+ int app_entry_type)
+{
+ struct dcb_peer_app_info info;
+ struct dcb_app *table = NULL;
+ const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
+ u16 app_count;
+ int err;
+
+
+ /**
+ * retrieve the peer app configuration form the driver. If the driver
+ * handlers fail exit without doing anything
+ */
+ err = ops->peer_getappinfo(netdev, &info, &app_count);
+ if (!err && app_count) {
+ table = kmalloc(sizeof(struct dcb_app) * app_count, GFP_KERNEL);
+ if (!table)
+ return -ENOMEM;
+
+ err = ops->peer_getapptable(netdev, table);
+ }
+
+ if (!err) {
+ u16 i;
+ struct nlattr *app;
+
+ /**
+ * build the message, from here on the only possible failure
+ * is due to the skb size
+ */
+ err = -EMSGSIZE;
+
+ app = nla_nest_start(skb, app_nested_type);
+ if (!app)
+ goto nla_put_failure;
+
+ if (app_info_type)
+ NLA_PUT(skb, app_info_type, sizeof(info), &info);
+
+ for (i = 0; i < app_count; i++)
+ NLA_PUT(skb, app_entry_type, sizeof(struct dcb_app),
+ &table[i]);
+
+ nla_nest_end(skb, app);
+ }
+ err = 0;
+
+nla_put_failure:
+ kfree(table);
+ return err;
+}
+
+/* Handle IEEE 802.1Qaz GET commands. */
+static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev)
+{
+ struct nlattr *ieee, *app;
+ struct dcb_app_type *itr;
+ const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
+ int dcbx;
+ int err = -EMSGSIZE;
+
+ 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;
+ memset(&ets, 0, sizeof(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;
+ memset(&pfc, 0, sizeof(pfc));
+ err = ops->ieee_getpfc(netdev, &pfc);
+ if (!err)
+ NLA_PUT(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc);
+ }
+
+ app = nla_nest_start(skb, DCB_ATTR_IEEE_APP_TABLE);
+ if (!app)
+ goto nla_put_failure;
+
+ spin_lock(&dcb_lock);
+ list_for_each_entry(itr, &dcb_app_list, list) {
+ if (itr->ifindex == netdev->ifindex) {
+ err = nla_put(skb, DCB_ATTR_IEEE_APP, sizeof(itr->app),
+ &itr->app);
+ if (err) {
+ spin_unlock(&dcb_lock);
+ goto nla_put_failure;
+ }
+ }
+ }
+
+ if (netdev->dcbnl_ops->getdcbx)
+ dcbx = netdev->dcbnl_ops->getdcbx(netdev);
+ else
+ dcbx = -EOPNOTSUPP;
+
+ spin_unlock(&dcb_lock);
+ nla_nest_end(skb, app);
+
+ /* get peer info if available */
+ if (ops->ieee_peer_getets) {
+ struct ieee_ets ets;
+ memset(&ets, 0, sizeof(ets));
+ err = ops->ieee_peer_getets(netdev, &ets);
+ if (!err)
+ NLA_PUT(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets);
+ }
+
+ if (ops->ieee_peer_getpfc) {
+ struct ieee_pfc pfc;
+ memset(&pfc, 0, sizeof(pfc));
+ err = ops->ieee_peer_getpfc(netdev, &pfc);
+ if (!err)
+ NLA_PUT(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc);
+ }
+
+ if (ops->peer_getappinfo && ops->peer_getapptable) {
+ err = dcbnl_build_peer_app(netdev, skb,
+ DCB_ATTR_IEEE_PEER_APP,
+ DCB_ATTR_IEEE_APP_UNSPEC,
+ DCB_ATTR_IEEE_APP);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ nla_nest_end(skb, ieee);
+ if (dcbx >= 0) {
+ err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ return 0;
+
+nla_put_failure:
+ return err;
+}
+
+static int dcbnl_cee_pg_fill(struct sk_buff *skb, struct net_device *dev,
+ int dir)
+{
+ u8 pgid, up_map, prio, tc_pct;
+ const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
+ int i = dir ? DCB_ATTR_CEE_TX_PG : DCB_ATTR_CEE_RX_PG;
+ struct nlattr *pg = nla_nest_start(skb, i);
+
+ if (!pg)
+ goto nla_put_failure;
+
+ for (i = DCB_PG_ATTR_TC_0; i <= DCB_PG_ATTR_TC_7; i++) {
+ struct nlattr *tc_nest = nla_nest_start(skb, i);
+
+ if (!tc_nest)
+ goto nla_put_failure;
+
+ pgid = DCB_ATTR_VALUE_UNDEFINED;
+ prio = DCB_ATTR_VALUE_UNDEFINED;
+ tc_pct = DCB_ATTR_VALUE_UNDEFINED;
+ up_map = DCB_ATTR_VALUE_UNDEFINED;
+
+ if (!dir)
+ ops->getpgtccfgrx(dev, i - DCB_PG_ATTR_TC_0,
+ &prio, &pgid, &tc_pct, &up_map);
+ else
+ ops->getpgtccfgtx(dev, i - DCB_PG_ATTR_TC_0,
+ &prio, &pgid, &tc_pct, &up_map);
+
+ NLA_PUT_U8(skb, DCB_TC_ATTR_PARAM_PGID, pgid);
+ NLA_PUT_U8(skb, DCB_TC_ATTR_PARAM_UP_MAPPING, up_map);
+ NLA_PUT_U8(skb, DCB_TC_ATTR_PARAM_STRICT_PRIO, prio);
+ NLA_PUT_U8(skb, DCB_TC_ATTR_PARAM_BW_PCT, tc_pct);
+ nla_nest_end(skb, tc_nest);
+ }
+
+ for (i = DCB_PG_ATTR_BW_ID_0; i <= DCB_PG_ATTR_BW_ID_7; i++) {
+ tc_pct = DCB_ATTR_VALUE_UNDEFINED;
+
+ if (!dir)
+ ops->getpgbwgcfgrx(dev, i - DCB_PG_ATTR_BW_ID_0,
+ &tc_pct);
+ else
+ ops->getpgbwgcfgtx(dev, i - DCB_PG_ATTR_BW_ID_0,
+ &tc_pct);
+ NLA_PUT_U8(skb, i, tc_pct);
+ }
+ nla_nest_end(skb, pg);
+ return 0;
+
+nla_put_failure:
+ return -EMSGSIZE;
+}
+
+static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev)
+{
+ struct nlattr *cee, *app;
+ struct dcb_app_type *itr;
+ const struct dcbnl_rtnl_ops *ops = netdev->dcbnl_ops;
+ int dcbx, i, err = -EMSGSIZE;
+ u8 value;
+
+ NLA_PUT_STRING(skb, DCB_ATTR_IFNAME, netdev->name);
+
+ cee = nla_nest_start(skb, DCB_ATTR_CEE);
+ if (!cee)
+ goto nla_put_failure;
+
+ /* local pg */
+ if (ops->getpgtccfgtx && ops->getpgbwgcfgtx) {
+ err = dcbnl_cee_pg_fill(skb, netdev, 1);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ if (ops->getpgtccfgrx && ops->getpgbwgcfgrx) {
+ err = dcbnl_cee_pg_fill(skb, netdev, 0);
+ if (err)
+ goto nla_put_failure;
+ }
+
+ /* local pfc */
+ if (ops->getpfccfg) {
+ struct nlattr *pfc_nest = nla_nest_start(skb, DCB_ATTR_CEE_PFC);
+
+ if (!pfc_nest)
+ goto nla_put_failure;
+
+ for (i = DCB_PFC_UP_ATTR_0; i <= DCB_PFC_UP_ATTR_7; i++) {
+ ops->getpfccfg(netdev, i - DCB_PFC_UP_ATTR_0, &value);
+ NLA_PUT_U8(skb, i, value);
+ }
+ nla_nest_end(skb, pfc_nest);
+ }
+
+ /* local app */
+ spin_lock(&dcb_lock);
+ app = nla_nest_start(skb, DCB_ATTR_CEE_APP_TABLE);
+ if (!app)
+ goto dcb_unlock;
+
+ list_for_each_entry(itr, &dcb_app_list, list) {
+ if (itr->ifindex == netdev->ifindex) {
+ struct nlattr *app_nest = nla_nest_start(skb,
+ DCB_ATTR_APP);
+ if (!app_nest)
+ goto dcb_unlock;
+
+ err = nla_put_u8(skb, DCB_APP_ATTR_IDTYPE,
+ itr->app.selector);
+ if (err)
+ goto dcb_unlock;
+
+ err = nla_put_u16(skb, DCB_APP_ATTR_ID,
+ itr->app.protocol);
+ if (err)
+ goto dcb_unlock;
+
+ err = nla_put_u8(skb, DCB_APP_ATTR_PRIORITY,
+ itr->app.priority);
+ if (err)
+ goto dcb_unlock;
+
+ nla_nest_end(skb, app_nest);
+ }
+ }
+ nla_nest_end(skb, app);
+
+ if (netdev->dcbnl_ops->getdcbx)
+ dcbx = netdev->dcbnl_ops->getdcbx(netdev);
+ else
+ dcbx = -EOPNOTSUPP;
+
+ spin_unlock(&dcb_lock);
+
+ /* features flags */
+ if (ops->getfeatcfg) {
+ struct nlattr *feat = nla_nest_start(skb, DCB_ATTR_CEE_FEAT);
+ if (!feat)
+ goto nla_put_failure;
+
+ for (i = DCB_FEATCFG_ATTR_ALL + 1; i <= DCB_FEATCFG_ATTR_MAX;
+ i++)
+ if (!ops->getfeatcfg(netdev, i, &value))
+ NLA_PUT_U8(skb, i, value);
+
+ nla_nest_end(skb, feat);
+ }
+
+ /* peer info if available */
+ if (ops->cee_peer_getpg) {
+ struct cee_pg pg;
+ memset(&pg, 0, sizeof(pg));
+ err = ops->cee_peer_getpg(netdev, &pg);
+ if (!err)
+ NLA_PUT(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg);
+ }
+
+ if (ops->cee_peer_getpfc) {
+ struct cee_pfc pfc;
+ memset(&pfc, 0, sizeof(pfc));
+ err = ops->cee_peer_getpfc(netdev, &pfc);
+ if (!err)
+ NLA_PUT(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc);
+ }
+
+ if (ops->peer_getappinfo && ops->peer_getapptable) {
+ err = dcbnl_build_peer_app(netdev, skb,
+ DCB_ATTR_CEE_PEER_APP_TABLE,
+ DCB_ATTR_CEE_PEER_APP_INFO,
+ DCB_ATTR_CEE_PEER_APP);
+ if (err)
+ goto nla_put_failure;
+ }
+ nla_nest_end(skb, cee);
+
+ /* DCBX state */
+ if (dcbx >= 0) {
+ err = nla_put_u8(skb, DCB_ATTR_DCBX, dcbx);
+ if (err)
+ goto nla_put_failure;
+ }
+ return 0;
+
+dcb_unlock:
+ spin_unlock(&dcb_lock);
+nla_put_failure:
+ return err;
+}
+
+static int dcbnl_notify(struct net_device *dev, int event, int cmd,
+ u32 seq, u32 pid, int dcbx_ver)
+{
+ struct net *net = dev_net(dev);
+ struct sk_buff *skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ const struct dcbnl_rtnl_ops *ops = dev->dcbnl_ops;
+ int err;
+
+ if (!ops)
+ return -EOPNOTSUPP;
+
+ skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!skb)
+ return -ENOBUFS;
+
+ nlh = nlmsg_put(skb, pid, 0, event, sizeof(*dcb), 0);
+ if (nlh == NULL) {
+ nlmsg_free(skb);
+ return -EMSGSIZE;
+ }
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = cmd;
+
+ if (dcbx_ver == DCB_CAP_DCBX_VER_IEEE)
+ err = dcbnl_ieee_fill(skb, dev);
+ else
+ err = dcbnl_cee_fill(skb, dev);
+
+ if (err < 0) {
+ /* Report error to broadcast listeners */
+ nlmsg_cancel(skb, nlh);
+ kfree_skb(skb);
+ rtnl_set_sk_err(net, RTNLGRP_DCB, err);
+ } else {
+ /* End nlmsg and notify broadcast listeners */
+ nlmsg_end(skb, nlh);
+ rtnl_notify(skb, net, 0, RTNLGRP_DCB, NULL, GFP_KERNEL);
+ }
+
+ return err;
+}
+
+int dcbnl_ieee_notify(struct net_device *dev, int event, int cmd,
+ u32 seq, u32 pid)
+{
+ return dcbnl_notify(dev, event, cmd, seq, pid, DCB_CAP_DCBX_VER_IEEE);
+}
+EXPORT_SYMBOL(dcbnl_ieee_notify);
+
+int dcbnl_cee_notify(struct net_device *dev, int event, int cmd,
+ u32 seq, u32 pid)
+{
+ return dcbnl_notify(dev, event, cmd, seq, pid, DCB_CAP_DCBX_VER_CEE);
+}
+EXPORT_SYMBOL(dcbnl_cee_notify);
+
+/* 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)
+ return err;
+
+ if (!tb[DCB_ATTR_IEEE])
+ return -EINVAL;
+
+ err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
+ tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
+ if (err)
+ return 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_setpfc) {
+ 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]) {
+ 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);
+ if (ops->ieee_setapp)
+ err = ops->ieee_setapp(netdev, app_data);
+ else
+ err = dcb_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);
+ dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_SET, seq, 0);
+ return err;
+}
+
+static int dcbnl_ieee_get(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct net *net = dev_net(netdev);
+ struct sk_buff *skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ 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_put(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+ if (nlh == NULL) {
+ nlmsg_free(skb);
+ return -EMSGSIZE;
+ }
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = DCB_CMD_IEEE_GET;
+
+ err = dcbnl_ieee_fill(skb, netdev);
+
+ if (err < 0) {
+ nlmsg_cancel(skb, nlh);
+ kfree_skb(skb);
+ } else {
+ nlmsg_end(skb, nlh);
+ err = rtnl_unicast(skb, net, pid);
+ }
+
+ return err;
+}
+
+static int dcbnl_ieee_del(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)
+ return -EOPNOTSUPP;
+
+ if (!tb[DCB_ATTR_IEEE])
+ return -EINVAL;
+
+ err = nla_parse_nested(ieee, DCB_ATTR_IEEE_MAX,
+ tb[DCB_ATTR_IEEE], dcbnl_ieee_policy);
+ if (err)
+ return err;
+
+ if (ieee[DCB_ATTR_IEEE_APP_TABLE]) {
+ 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);
+ if (ops->ieee_delapp)
+ err = ops->ieee_delapp(netdev, app_data);
+ else
+ err = dcb_ieee_delapp(netdev, app_data);
+ if (err)
+ goto err;
+ }
+ }
+
+err:
+ dcbnl_reply(err, RTM_SETDCB, DCB_CMD_IEEE_DEL, DCB_ATTR_IEEE,
+ pid, seq, flags);
+ dcbnl_ieee_notify(netdev, RTM_SETDCB, DCB_CMD_IEEE_DEL, seq, 0);
+ return err;
+}
+
+
+/* DCBX configuration */
+static int dcbnl_getdcbx(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ int ret;
+
+ if (!netdev->dcbnl_ops->getdcbx)
+ return -EOPNOTSUPP;
+
+ ret = dcbnl_reply(netdev->dcbnl_ops->getdcbx(netdev), RTM_GETDCB,
+ DCB_CMD_GDCBX, DCB_ATTR_DCBX, pid, seq, flags);
+
+ return ret;
+}
+
+static int dcbnl_setdcbx(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ int ret;
+ u8 value;
+
+ if (!netdev->dcbnl_ops->setdcbx)
+ return -EOPNOTSUPP;
+
+ if (!tb[DCB_ATTR_DCBX])
+ return -EINVAL;
+
+ value = nla_get_u8(tb[DCB_ATTR_DCBX]);
+
+ ret = dcbnl_reply(netdev->dcbnl_ops->setdcbx(netdev, value),
+ RTM_SETDCB, DCB_CMD_SDCBX, DCB_ATTR_DCBX,
+ pid, seq, flags);
+
+ return ret;
+}
+
+static int dcbnl_getfeatcfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct sk_buff *dcbnl_skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1], *nest;
+ u8 value;
+ int ret, i;
+ int getall = 0;
+
+ if (!netdev->dcbnl_ops->getfeatcfg)
+ return -EOPNOTSUPP;
+
+ if (!tb[DCB_ATTR_FEATCFG])
+ return -EINVAL;
+
+ ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
+ dcbnl_featcfg_nest);
+ if (ret)
+ goto err_out;
+
+ dcbnl_skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!dcbnl_skb) {
+ ret = -ENOBUFS;
+ goto err_out;
+ }
+
+ nlh = NLMSG_NEW(dcbnl_skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = DCB_CMD_GFEATCFG;
+
+ nest = nla_nest_start(dcbnl_skb, DCB_ATTR_FEATCFG);
+ if (!nest) {
+ ret = -EMSGSIZE;
+ goto nla_put_failure;
+ }
+
+ if (data[DCB_FEATCFG_ATTR_ALL])
+ getall = 1;
+
+ for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
+ if (!getall && !data[i])
+ continue;
+
+ ret = netdev->dcbnl_ops->getfeatcfg(netdev, i, &value);
+ if (!ret)
+ ret = nla_put_u8(dcbnl_skb, i, value);
+
+ if (ret) {
+ nla_nest_cancel(dcbnl_skb, nest);
+ goto nla_put_failure;
+ }
+ }
+ nla_nest_end(dcbnl_skb, nest);
+
+ nlmsg_end(dcbnl_skb, nlh);
+
+ return rtnl_unicast(dcbnl_skb, &init_net, pid);
+nla_put_failure:
+ nlmsg_cancel(dcbnl_skb, nlh);
+nlmsg_failure:
+ kfree_skb(dcbnl_skb);
+err_out:
+ return ret;
+}
+
+static int dcbnl_setfeatcfg(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct nlattr *data[DCB_FEATCFG_ATTR_MAX + 1];
+ int ret, i;
+ u8 value;
+
+ if (!netdev->dcbnl_ops->setfeatcfg)
+ return -ENOTSUPP;
+
+ if (!tb[DCB_ATTR_FEATCFG])
+ return -EINVAL;
+
+ ret = nla_parse_nested(data, DCB_FEATCFG_ATTR_MAX, tb[DCB_ATTR_FEATCFG],
+ dcbnl_featcfg_nest);
+
+ if (ret)
+ goto err;
+
+ for (i = DCB_FEATCFG_ATTR_ALL+1; i <= DCB_FEATCFG_ATTR_MAX; i++) {
+ if (data[i] == NULL)
+ continue;
+
+ value = nla_get_u8(data[i]);
+
+ ret = netdev->dcbnl_ops->setfeatcfg(netdev, i, value);
+
+ if (ret)
+ goto err;
+ }
+err:
+ dcbnl_reply(ret, RTM_SETDCB, DCB_CMD_SFEATCFG, DCB_ATTR_FEATCFG,
+ pid, seq, flags);
+
+ return ret;
+}
+
+/* Handle CEE DCBX GET commands. */
+static int dcbnl_cee_get(struct net_device *netdev, struct nlattr **tb,
+ u32 pid, u32 seq, u16 flags)
+{
+ struct net *net = dev_net(netdev);
+ struct sk_buff *skb;
+ struct nlmsghdr *nlh;
+ struct dcbmsg *dcb;
+ 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_put(skb, pid, seq, RTM_GETDCB, sizeof(*dcb), flags);
+ if (nlh == NULL) {
+ nlmsg_free(skb);
+ return -EMSGSIZE;
+ }
+
+ dcb = NLMSG_DATA(nlh);
+ dcb->dcb_family = AF_UNSPEC;
+ dcb->cmd = DCB_CMD_CEE_GET;
+
+ err = dcbnl_cee_fill(skb, netdev);
+
+ if (err < 0) {
+ nlmsg_cancel(skb, nlh);
+ nlmsg_free(skb);
+ } else {
+ nlmsg_end(skb, nlh);
+ err = rtnl_unicast(skb, net, pid);
+ }
+ return err;
+}
+
+static int dcb_doit(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+ struct net *net = sock_net(skb->sk);
+ struct net_device *netdev;
+ struct dcbmsg *dcb = (struct dcbmsg *)NLMSG_DATA(nlh);
+ struct nlattr *tb[DCB_ATTR_MAX + 1];
+ u32 pid = skb ? NETLINK_CB(skb).pid : 0;
+ int ret = -EINVAL;
+
+ if (!net_eq(net, &init_net))
+ return -EINVAL;
+
+ ret = nlmsg_parse(nlh, sizeof(*dcb), tb, DCB_ATTR_MAX,
+ dcbnl_rtnl_policy);
+ if (ret < 0)
+ return ret;
+
+ if (!tb[DCB_ATTR_IFNAME])
+ return -EINVAL;
+
+ netdev = dev_get_by_name(&init_net, nla_data(tb[DCB_ATTR_IFNAME]));
+ if (!netdev)
+ return -EINVAL;
+
+ if (!netdev->dcbnl_ops)
+ goto errout;
+
+ switch (dcb->cmd) {
+ case DCB_CMD_GSTATE:
+ ret = dcbnl_getstate(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_PFC_GCFG:
+ ret = dcbnl_getpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_GPERM_HWADDR:
+ ret = dcbnl_getperm_hwaddr(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_PGTX_GCFG:
+ ret = dcbnl_pgtx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_PGRX_GCFG:
+ ret = dcbnl_pgrx_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_BCN_GCFG:
+ ret = dcbnl_bcn_getcfg(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_SSTATE:
+ ret = dcbnl_setstate(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_PFC_SCFG:
+ ret = dcbnl_setpfccfg(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+
+ case DCB_CMD_SET_ALL:
+ ret = dcbnl_setall(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_PGTX_SCFG:
+ ret = dcbnl_pgtx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_PGRX_SCFG:
+ ret = dcbnl_pgrx_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_GCAP:
+ ret = dcbnl_getcap(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_GNUMTCS:
+ ret = dcbnl_getnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_SNUMTCS:
+ ret = dcbnl_setnumtcs(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_PFC_GSTATE:
+ ret = dcbnl_getpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_PFC_SSTATE:
+ ret = dcbnl_setpfcstate(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_BCN_SCFG:
+ ret = dcbnl_bcn_setcfg(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_GAPP:
+ ret = dcbnl_getapp(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_SAPP:
+ 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;
+ case DCB_CMD_IEEE_DEL:
+ ret = dcbnl_ieee_del(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_GDCBX:
+ ret = dcbnl_getdcbx(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_SDCBX:
+ ret = dcbnl_setdcbx(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_GFEATCFG:
+ ret = dcbnl_getfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_SFEATCFG:
+ ret = dcbnl_setfeatcfg(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ case DCB_CMD_CEE_GET:
+ ret = dcbnl_cee_get(netdev, tb, pid, nlh->nlmsg_seq,
+ nlh->nlmsg_flags);
+ goto out;
+ default:
+ goto errout;
+ }
+errout:
+ ret = -EINVAL;
+out:
+ dev_put(netdev);
+ return ret;
+}
+
+/**
+ * dcb_getapp - retrieve the DCBX application user priority
+ *
+ * On success returns a non-zero 802.1p user priority bitmap
+ * otherwise returns 0 as the invalid user priority bitmap to
+ * indicate an error.
+ */
+u8 dcb_getapp(struct net_device *dev, struct dcb_app *app)
+{
+ struct dcb_app_type *itr;
+ u8 prio = 0;
+
+ spin_lock(&dcb_lock);
+ list_for_each_entry(itr, &dcb_app_list, list) {
+ if (itr->app.selector == app->selector &&
+ itr->app.protocol == app->protocol &&
+ itr->ifindex == dev->ifindex) {
+ prio = itr->app.priority;
+ break;
+ }
+ }
+ spin_unlock(&dcb_lock);
+
+ return prio;
+}
+EXPORT_SYMBOL(dcb_getapp);
+
+/**
+ * dcb_setapp - add CEE dcb application data to app list
+ *
+ * Priority 0 is an invalid priority in CEE spec. This routine
+ * removes applications from the app list if the priority is
+ * set to zero.
+ */
+int dcb_setapp(struct net_device *dev, struct dcb_app *new)
+{
+ struct dcb_app_type *itr;
+ struct dcb_app_type event;
+
+ event.ifindex = dev->ifindex;
+ memcpy(&event.app, new, sizeof(event.app));
+ if (dev->dcbnl_ops->getdcbx)
+ event.dcbx = dev->dcbnl_ops->getdcbx(dev);
+
+ spin_lock(&dcb_lock);
+ /* Search for existing match and replace */
+ list_for_each_entry(itr, &dcb_app_list, list) {
+ if (itr->app.selector == new->selector &&
+ itr->app.protocol == new->protocol &&
+ itr->ifindex == dev->ifindex) {
+ if (new->priority)
+ itr->app.priority = new->priority;
+ else {
+ list_del(&itr->list);
+ kfree(itr);
+ }
+ goto out;
+ }
+ }
+ /* App type does not exist add new application type */
+ if (new->priority) {
+ struct dcb_app_type *entry;
+ entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC);
+ if (!entry) {
+ spin_unlock(&dcb_lock);
+ return -ENOMEM;
+ }
+
+ memcpy(&entry->app, new, sizeof(*new));
+ entry->ifindex = dev->ifindex;
+ list_add(&entry->list, &dcb_app_list);
+ }
+out:
+ spin_unlock(&dcb_lock);
+ call_dcbevent_notifiers(DCB_APP_EVENT, &event);
+ return 0;
+}
+EXPORT_SYMBOL(dcb_setapp);
+
+/**
+ * dcb_ieee_getapp_mask - retrieve the IEEE DCB application priority
+ *
+ * Helper routine which on success returns a non-zero 802.1Qaz user
+ * priority bitmap otherwise returns 0 to indicate the dcb_app was
+ * not found in APP list.
+ */
+u8 dcb_ieee_getapp_mask(struct net_device *dev, struct dcb_app *app)
+{
+ struct dcb_app_type *itr;
+ u8 prio = 0;
+
+ spin_lock(&dcb_lock);
+ list_for_each_entry(itr, &dcb_app_list, list) {
+ if (itr->app.selector == app->selector &&
+ itr->app.protocol == app->protocol &&
+ itr->ifindex == dev->ifindex) {
+ prio |= 1 << itr->app.priority;
+ }
+ }
+ spin_unlock(&dcb_lock);
+
+ return prio;
+}
+EXPORT_SYMBOL(dcb_ieee_getapp_mask);
+
+/**
+ * dcb_ieee_setapp - add IEEE dcb application data to app list
+ *
+ * This adds Application data to the list. Multiple application
+ * entries may exists for the same selector and protocol as long
+ * as the priorities are different.
+ */
+int dcb_ieee_setapp(struct net_device *dev, struct dcb_app *new)
+{
+ struct dcb_app_type *itr, *entry;
+ struct dcb_app_type event;
+ int err = 0;
+
+ event.ifindex = dev->ifindex;
+ memcpy(&event.app, new, sizeof(event.app));
+ if (dev->dcbnl_ops->getdcbx)
+ event.dcbx = dev->dcbnl_ops->getdcbx(dev);
+
+ spin_lock(&dcb_lock);
+ /* Search for existing match and abort if found */
+ list_for_each_entry(itr, &dcb_app_list, list) {
+ if (itr->app.selector == new->selector &&
+ itr->app.protocol == new->protocol &&
+ itr->app.priority == new->priority &&
+ itr->ifindex == dev->ifindex) {
+ err = -EEXIST;
+ goto out;
+ }
+ }
+
+ /* App entry does not exist add new entry */
+ entry = kmalloc(sizeof(struct dcb_app_type), GFP_ATOMIC);
+ if (!entry) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ memcpy(&entry->app, new, sizeof(*new));
+ entry->ifindex = dev->ifindex;
+ list_add(&entry->list, &dcb_app_list);
+out:
+ spin_unlock(&dcb_lock);
+ if (!err)
+ call_dcbevent_notifiers(DCB_APP_EVENT, &event);
+ return err;
+}
+EXPORT_SYMBOL(dcb_ieee_setapp);
+
+/**
+ * dcb_ieee_delapp - delete IEEE dcb application data from list
+ *
+ * This removes a matching APP data from the APP list
+ */
+int dcb_ieee_delapp(struct net_device *dev, struct dcb_app *del)
+{
+ struct dcb_app_type *itr;
+ struct dcb_app_type event;
+ int err = -ENOENT;
+
+ event.ifindex = dev->ifindex;
+ memcpy(&event.app, del, sizeof(event.app));
+ if (dev->dcbnl_ops->getdcbx)
+ event.dcbx = dev->dcbnl_ops->getdcbx(dev);
+
+ spin_lock(&dcb_lock);
+ /* Search for existing match and remove it. */
+ list_for_each_entry(itr, &dcb_app_list, list) {
+ if (itr->app.selector == del->selector &&
+ itr->app.protocol == del->protocol &&
+ itr->app.priority == del->priority &&
+ itr->ifindex == dev->ifindex) {
+ list_del(&itr->list);
+ kfree(itr);
+ err = 0;
+ goto out;
+ }
+ }
+
+out:
+ spin_unlock(&dcb_lock);
+ if (!err)
+ call_dcbevent_notifiers(DCB_APP_EVENT, &event);
+ return err;
+}
+EXPORT_SYMBOL(dcb_ieee_delapp);
+
+static void dcb_flushapp(void)
+{
+ struct dcb_app_type *app;
+ struct dcb_app_type *tmp;
+
+ spin_lock(&dcb_lock);
+ list_for_each_entry_safe(app, tmp, &dcb_app_list, list) {
+ list_del(&app->list);
+ kfree(app);
+ }
+ spin_unlock(&dcb_lock);
+}
+
+static int __init dcbnl_init(void)
+{
+ INIT_LIST_HEAD(&dcb_app_list);
+
+ rtnl_register(PF_UNSPEC, RTM_GETDCB, dcb_doit, NULL, NULL);
+ rtnl_register(PF_UNSPEC, RTM_SETDCB, dcb_doit, NULL, NULL);
+
+ return 0;
+}
+module_init(dcbnl_init);
+
+static void __exit dcbnl_exit(void)
+{
+ rtnl_unregister(PF_UNSPEC, RTM_GETDCB);
+ rtnl_unregister(PF_UNSPEC, RTM_SETDCB);
+ dcb_flushapp();
+}
+module_exit(dcbnl_exit);