[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/net/batman-adv/netlink.c b/src/kernel/linux/v4.14/net/batman-adv/netlink.c
new file mode 100644
index 0000000..edb35bc
--- /dev/null
+++ b/src/kernel/linux/v4.14/net/batman-adv/netlink.c
@@ -0,0 +1,640 @@
+/* Copyright (C) 2016-2017 B.A.T.M.A.N. contributors:
+ *
+ * Matthias Schiffer
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "netlink.h"
+#include "main.h"
+
+#include <linux/atomic.h>
+#include <linux/byteorder/generic.h>
+#include <linux/cache.h>
+#include <linux/errno.h>
+#include <linux/export.h>
+#include <linux/fs.h>
+#include <linux/genetlink.h>
+#include <linux/if_ether.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/netlink.h>
+#include <linux/printk.h>
+#include <linux/rculist.h>
+#include <linux/rcupdate.h>
+#include <linux/skbuff.h>
+#include <linux/stddef.h>
+#include <linux/types.h>
+#include <net/genetlink.h>
+#include <net/netlink.h>
+#include <net/sock.h>
+#include <uapi/linux/batman_adv.h>
+
+#include "bat_algo.h"
+#include "bridge_loop_avoidance.h"
+#include "gateway_client.h"
+#include "hard-interface.h"
+#include "originator.h"
+#include "packet.h"
+#include "soft-interface.h"
+#include "tp_meter.h"
+#include "translation-table.h"
+
+struct genl_family batadv_netlink_family;
+
+/* multicast groups */
+enum batadv_netlink_multicast_groups {
+ BATADV_NL_MCGRP_TPMETER,
+};
+
+static const struct genl_multicast_group batadv_netlink_mcgrps[] = {
+ [BATADV_NL_MCGRP_TPMETER] = { .name = BATADV_NL_MCAST_GROUP_TPMETER },
+};
+
+static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
+ [BATADV_ATTR_VERSION] = { .type = NLA_STRING },
+ [BATADV_ATTR_ALGO_NAME] = { .type = NLA_STRING },
+ [BATADV_ATTR_MESH_IFINDEX] = { .type = NLA_U32 },
+ [BATADV_ATTR_MESH_IFNAME] = { .type = NLA_STRING },
+ [BATADV_ATTR_MESH_ADDRESS] = { .len = ETH_ALEN },
+ [BATADV_ATTR_HARD_IFINDEX] = { .type = NLA_U32 },
+ [BATADV_ATTR_HARD_IFNAME] = { .type = NLA_STRING },
+ [BATADV_ATTR_HARD_ADDRESS] = { .len = ETH_ALEN },
+ [BATADV_ATTR_ORIG_ADDRESS] = { .len = ETH_ALEN },
+ [BATADV_ATTR_TPMETER_RESULT] = { .type = NLA_U8 },
+ [BATADV_ATTR_TPMETER_TEST_TIME] = { .type = NLA_U32 },
+ [BATADV_ATTR_TPMETER_BYTES] = { .type = NLA_U64 },
+ [BATADV_ATTR_TPMETER_COOKIE] = { .type = NLA_U32 },
+ [BATADV_ATTR_ACTIVE] = { .type = NLA_FLAG },
+ [BATADV_ATTR_TT_ADDRESS] = { .len = ETH_ALEN },
+ [BATADV_ATTR_TT_TTVN] = { .type = NLA_U8 },
+ [BATADV_ATTR_TT_LAST_TTVN] = { .type = NLA_U8 },
+ [BATADV_ATTR_TT_CRC32] = { .type = NLA_U32 },
+ [BATADV_ATTR_TT_VID] = { .type = NLA_U16 },
+ [BATADV_ATTR_TT_FLAGS] = { .type = NLA_U32 },
+ [BATADV_ATTR_FLAG_BEST] = { .type = NLA_FLAG },
+ [BATADV_ATTR_LAST_SEEN_MSECS] = { .type = NLA_U32 },
+ [BATADV_ATTR_NEIGH_ADDRESS] = { .len = ETH_ALEN },
+ [BATADV_ATTR_TQ] = { .type = NLA_U8 },
+ [BATADV_ATTR_THROUGHPUT] = { .type = NLA_U32 },
+ [BATADV_ATTR_BANDWIDTH_UP] = { .type = NLA_U32 },
+ [BATADV_ATTR_BANDWIDTH_DOWN] = { .type = NLA_U32 },
+ [BATADV_ATTR_ROUTER] = { .len = ETH_ALEN },
+ [BATADV_ATTR_BLA_OWN] = { .type = NLA_FLAG },
+ [BATADV_ATTR_BLA_ADDRESS] = { .len = ETH_ALEN },
+ [BATADV_ATTR_BLA_VID] = { .type = NLA_U16 },
+ [BATADV_ATTR_BLA_BACKBONE] = { .len = ETH_ALEN },
+ [BATADV_ATTR_BLA_CRC] = { .type = NLA_U16 },
+};
+
+/**
+ * batadv_netlink_get_ifindex - Extract an interface index from a message
+ * @nlh: Message header
+ * @attrtype: Attribute which holds an interface index
+ *
+ * Return: interface index, or 0.
+ */
+int
+batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype)
+{
+ struct nlattr *attr = nlmsg_find_attr(nlh, GENL_HDRLEN, attrtype);
+
+ return (attr && nla_len(attr) == sizeof(u32)) ? nla_get_u32(attr) : 0;
+}
+
+/**
+ * batadv_netlink_mesh_info_put - fill in generic information about mesh
+ * interface
+ * @msg: netlink message to be sent back
+ * @soft_iface: interface for which the data should be taken
+ *
+ * Return: 0 on success, < 0 on error
+ */
+static int
+batadv_netlink_mesh_info_put(struct sk_buff *msg, struct net_device *soft_iface)
+{
+ struct batadv_priv *bat_priv = netdev_priv(soft_iface);
+ struct batadv_hard_iface *primary_if = NULL;
+ struct net_device *hard_iface;
+ int ret = -ENOBUFS;
+
+ if (nla_put_string(msg, BATADV_ATTR_VERSION, BATADV_SOURCE_VERSION) ||
+ nla_put_string(msg, BATADV_ATTR_ALGO_NAME,
+ bat_priv->algo_ops->name) ||
+ nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, soft_iface->ifindex) ||
+ nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, soft_iface->name) ||
+ nla_put(msg, BATADV_ATTR_MESH_ADDRESS, ETH_ALEN,
+ soft_iface->dev_addr) ||
+ nla_put_u8(msg, BATADV_ATTR_TT_TTVN,
+ (u8)atomic_read(&bat_priv->tt.vn)))
+ goto out;
+
+#ifdef CONFIG_BATMAN_ADV_BLA
+ if (nla_put_u16(msg, BATADV_ATTR_BLA_CRC,
+ ntohs(bat_priv->bla.claim_dest.group)))
+ goto out;
+#endif
+
+ primary_if = batadv_primary_if_get_selected(bat_priv);
+ if (primary_if && primary_if->if_status == BATADV_IF_ACTIVE) {
+ hard_iface = primary_if->net_dev;
+
+ if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
+ hard_iface->ifindex) ||
+ nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
+ hard_iface->name) ||
+ nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN,
+ hard_iface->dev_addr))
+ goto out;
+ }
+
+ ret = 0;
+
+ out:
+ if (primary_if)
+ batadv_hardif_put(primary_if);
+
+ return ret;
+}
+
+/**
+ * batadv_netlink_get_mesh_info - handle incoming BATADV_CMD_GET_MESH_INFO
+ * netlink request
+ * @skb: received netlink message
+ * @info: receiver information
+ *
+ * Return: 0 on success, < 0 on error
+ */
+static int
+batadv_netlink_get_mesh_info(struct sk_buff *skb, struct genl_info *info)
+{
+ struct net *net = genl_info_net(info);
+ struct net_device *soft_iface;
+ struct sk_buff *msg = NULL;
+ void *msg_head;
+ int ifindex;
+ int ret;
+
+ if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
+ return -EINVAL;
+
+ ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
+ if (!ifindex)
+ return -EINVAL;
+
+ soft_iface = dev_get_by_index(net, ifindex);
+ if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ msg_head = genlmsg_put(msg, info->snd_portid, info->snd_seq,
+ &batadv_netlink_family, 0,
+ BATADV_CMD_GET_MESH_INFO);
+ if (!msg_head) {
+ ret = -ENOBUFS;
+ goto out;
+ }
+
+ ret = batadv_netlink_mesh_info_put(msg, soft_iface);
+
+ out:
+ if (soft_iface)
+ dev_put(soft_iface);
+
+ if (ret) {
+ if (msg)
+ nlmsg_free(msg);
+ return ret;
+ }
+
+ genlmsg_end(msg, msg_head);
+ return genlmsg_reply(msg, info);
+}
+
+/**
+ * batadv_netlink_tp_meter_put - Fill information of started tp_meter session
+ * @msg: netlink message to be sent back
+ * @cookie: tp meter session cookie
+ *
+ * Return: 0 on success, < 0 on error
+ */
+static int
+batadv_netlink_tp_meter_put(struct sk_buff *msg, u32 cookie)
+{
+ if (nla_put_u32(msg, BATADV_ATTR_TPMETER_COOKIE, cookie))
+ return -ENOBUFS;
+
+ return 0;
+}
+
+/**
+ * batadv_netlink_tpmeter_notify - send tp_meter result via netlink to client
+ * @bat_priv: the bat priv with all the soft interface information
+ * @dst: destination of tp_meter session
+ * @result: reason for tp meter session stop
+ * @test_time: total time ot the tp_meter session
+ * @total_bytes: bytes acked to the receiver
+ * @cookie: cookie of tp_meter session
+ *
+ * Return: 0 on success, < 0 on error
+ */
+int batadv_netlink_tpmeter_notify(struct batadv_priv *bat_priv, const u8 *dst,
+ u8 result, u32 test_time, u64 total_bytes,
+ u32 cookie)
+{
+ struct sk_buff *msg;
+ void *hdr;
+ int ret;
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
+
+ hdr = genlmsg_put(msg, 0, 0, &batadv_netlink_family, 0,
+ BATADV_CMD_TP_METER);
+ if (!hdr) {
+ ret = -ENOBUFS;
+ goto err_genlmsg;
+ }
+
+ if (nla_put_u32(msg, BATADV_ATTR_TPMETER_COOKIE, cookie))
+ goto nla_put_failure;
+
+ if (nla_put_u32(msg, BATADV_ATTR_TPMETER_TEST_TIME, test_time))
+ goto nla_put_failure;
+
+ if (nla_put_u64_64bit(msg, BATADV_ATTR_TPMETER_BYTES, total_bytes,
+ BATADV_ATTR_PAD))
+ goto nla_put_failure;
+
+ if (nla_put_u8(msg, BATADV_ATTR_TPMETER_RESULT, result))
+ goto nla_put_failure;
+
+ if (nla_put(msg, BATADV_ATTR_ORIG_ADDRESS, ETH_ALEN, dst))
+ goto nla_put_failure;
+
+ genlmsg_end(msg, hdr);
+
+ genlmsg_multicast_netns(&batadv_netlink_family,
+ dev_net(bat_priv->soft_iface), msg, 0,
+ BATADV_NL_MCGRP_TPMETER, GFP_KERNEL);
+
+ return 0;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ ret = -EMSGSIZE;
+
+err_genlmsg:
+ nlmsg_free(msg);
+ return ret;
+}
+
+/**
+ * batadv_netlink_tp_meter_start - Start a new tp_meter session
+ * @skb: received netlink message
+ * @info: receiver information
+ *
+ * Return: 0 on success, < 0 on error
+ */
+static int
+batadv_netlink_tp_meter_start(struct sk_buff *skb, struct genl_info *info)
+{
+ struct net *net = genl_info_net(info);
+ struct net_device *soft_iface;
+ struct batadv_priv *bat_priv;
+ struct sk_buff *msg = NULL;
+ u32 test_length;
+ void *msg_head;
+ int ifindex;
+ u32 cookie;
+ u8 *dst;
+ int ret;
+
+ if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
+ return -EINVAL;
+
+ if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
+ return -EINVAL;
+
+ if (!info->attrs[BATADV_ATTR_TPMETER_TEST_TIME])
+ return -EINVAL;
+
+ ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
+ if (!ifindex)
+ return -EINVAL;
+
+ dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);
+
+ test_length = nla_get_u32(info->attrs[BATADV_ATTR_TPMETER_TEST_TIME]);
+
+ soft_iface = dev_get_by_index(net, ifindex);
+ if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
+ if (!msg) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ msg_head = genlmsg_put(msg, info->snd_portid, info->snd_seq,
+ &batadv_netlink_family, 0,
+ BATADV_CMD_TP_METER);
+ if (!msg_head) {
+ ret = -ENOBUFS;
+ goto out;
+ }
+
+ bat_priv = netdev_priv(soft_iface);
+ batadv_tp_start(bat_priv, dst, test_length, &cookie);
+
+ ret = batadv_netlink_tp_meter_put(msg, cookie);
+
+ out:
+ if (soft_iface)
+ dev_put(soft_iface);
+
+ if (ret) {
+ if (msg)
+ nlmsg_free(msg);
+ return ret;
+ }
+
+ genlmsg_end(msg, msg_head);
+ return genlmsg_reply(msg, info);
+}
+
+/**
+ * batadv_netlink_tp_meter_start - Cancel a running tp_meter session
+ * @skb: received netlink message
+ * @info: receiver information
+ *
+ * Return: 0 on success, < 0 on error
+ */
+static int
+batadv_netlink_tp_meter_cancel(struct sk_buff *skb, struct genl_info *info)
+{
+ struct net *net = genl_info_net(info);
+ struct net_device *soft_iface;
+ struct batadv_priv *bat_priv;
+ int ifindex;
+ u8 *dst;
+ int ret = 0;
+
+ if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
+ return -EINVAL;
+
+ if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
+ return -EINVAL;
+
+ ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
+ if (!ifindex)
+ return -EINVAL;
+
+ dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);
+
+ soft_iface = dev_get_by_index(net, ifindex);
+ if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ bat_priv = netdev_priv(soft_iface);
+ batadv_tp_stop(bat_priv, dst, BATADV_TP_REASON_CANCEL);
+
+out:
+ if (soft_iface)
+ dev_put(soft_iface);
+
+ return ret;
+}
+
+/**
+ * batadv_netlink_dump_hardif_entry - Dump one hard interface into a message
+ * @msg: Netlink message to dump into
+ * @portid: Port making netlink request
+ * @seq: Sequence number of netlink message
+ * @hard_iface: Hard interface to dump
+ *
+ * Return: error code, or 0 on success
+ */
+static int
+batadv_netlink_dump_hardif_entry(struct sk_buff *msg, u32 portid, u32 seq,
+ struct batadv_hard_iface *hard_iface)
+{
+ struct net_device *net_dev = hard_iface->net_dev;
+ void *hdr;
+
+ hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, NLM_F_MULTI,
+ BATADV_CMD_GET_HARDIFS);
+ if (!hdr)
+ return -EMSGSIZE;
+
+ if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
+ net_dev->ifindex) ||
+ nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
+ net_dev->name) ||
+ nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN,
+ net_dev->dev_addr))
+ goto nla_put_failure;
+
+ if (hard_iface->if_status == BATADV_IF_ACTIVE) {
+ if (nla_put_flag(msg, BATADV_ATTR_ACTIVE))
+ goto nla_put_failure;
+ }
+
+ genlmsg_end(msg, hdr);
+ return 0;
+
+ nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return -EMSGSIZE;
+}
+
+/**
+ * batadv_netlink_dump_hardifs - Dump all hard interface into a messages
+ * @msg: Netlink message to dump into
+ * @cb: Parameters from query
+ *
+ * Return: error code, or length of reply message on success
+ */
+static int
+batadv_netlink_dump_hardifs(struct sk_buff *msg, struct netlink_callback *cb)
+{
+ struct net *net = sock_net(cb->skb->sk);
+ struct net_device *soft_iface;
+ struct batadv_hard_iface *hard_iface;
+ int ifindex;
+ int portid = NETLINK_CB(cb->skb).portid;
+ int seq = cb->nlh->nlmsg_seq;
+ int skip = cb->args[0];
+ int i = 0;
+
+ ifindex = batadv_netlink_get_ifindex(cb->nlh,
+ BATADV_ATTR_MESH_IFINDEX);
+ if (!ifindex)
+ return -EINVAL;
+
+ soft_iface = dev_get_by_index(net, ifindex);
+ if (!soft_iface)
+ return -ENODEV;
+
+ if (!batadv_softif_is_valid(soft_iface)) {
+ dev_put(soft_iface);
+ return -ENODEV;
+ }
+
+ rcu_read_lock();
+
+ list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {
+ if (hard_iface->soft_iface != soft_iface)
+ continue;
+
+ if (i++ < skip)
+ continue;
+
+ if (batadv_netlink_dump_hardif_entry(msg, portid, seq,
+ hard_iface)) {
+ i--;
+ break;
+ }
+ }
+
+ rcu_read_unlock();
+
+ dev_put(soft_iface);
+
+ cb->args[0] = i;
+
+ return msg->len;
+}
+
+static const struct genl_ops batadv_netlink_ops[] = {
+ {
+ .cmd = BATADV_CMD_GET_MESH_INFO,
+ .flags = GENL_ADMIN_PERM,
+ .policy = batadv_netlink_policy,
+ .doit = batadv_netlink_get_mesh_info,
+ },
+ {
+ .cmd = BATADV_CMD_TP_METER,
+ .flags = GENL_ADMIN_PERM,
+ .policy = batadv_netlink_policy,
+ .doit = batadv_netlink_tp_meter_start,
+ },
+ {
+ .cmd = BATADV_CMD_TP_METER_CANCEL,
+ .flags = GENL_ADMIN_PERM,
+ .policy = batadv_netlink_policy,
+ .doit = batadv_netlink_tp_meter_cancel,
+ },
+ {
+ .cmd = BATADV_CMD_GET_ROUTING_ALGOS,
+ .flags = GENL_ADMIN_PERM,
+ .policy = batadv_netlink_policy,
+ .dumpit = batadv_algo_dump,
+ },
+ {
+ .cmd = BATADV_CMD_GET_HARDIFS,
+ .flags = GENL_ADMIN_PERM,
+ .policy = batadv_netlink_policy,
+ .dumpit = batadv_netlink_dump_hardifs,
+ },
+ {
+ .cmd = BATADV_CMD_GET_TRANSTABLE_LOCAL,
+ .flags = GENL_ADMIN_PERM,
+ .policy = batadv_netlink_policy,
+ .dumpit = batadv_tt_local_dump,
+ },
+ {
+ .cmd = BATADV_CMD_GET_TRANSTABLE_GLOBAL,
+ .flags = GENL_ADMIN_PERM,
+ .policy = batadv_netlink_policy,
+ .dumpit = batadv_tt_global_dump,
+ },
+ {
+ .cmd = BATADV_CMD_GET_ORIGINATORS,
+ .flags = GENL_ADMIN_PERM,
+ .policy = batadv_netlink_policy,
+ .dumpit = batadv_orig_dump,
+ },
+ {
+ .cmd = BATADV_CMD_GET_NEIGHBORS,
+ .flags = GENL_ADMIN_PERM,
+ .policy = batadv_netlink_policy,
+ .dumpit = batadv_hardif_neigh_dump,
+ },
+ {
+ .cmd = BATADV_CMD_GET_GATEWAYS,
+ .flags = GENL_ADMIN_PERM,
+ .policy = batadv_netlink_policy,
+ .dumpit = batadv_gw_dump,
+ },
+ {
+ .cmd = BATADV_CMD_GET_BLA_CLAIM,
+ .flags = GENL_ADMIN_PERM,
+ .policy = batadv_netlink_policy,
+ .dumpit = batadv_bla_claim_dump,
+ },
+ {
+ .cmd = BATADV_CMD_GET_BLA_BACKBONE,
+ .flags = GENL_ADMIN_PERM,
+ .policy = batadv_netlink_policy,
+ .dumpit = batadv_bla_backbone_dump,
+ },
+
+};
+
+struct genl_family batadv_netlink_family __ro_after_init = {
+ .hdrsize = 0,
+ .name = BATADV_NL_NAME,
+ .version = 1,
+ .maxattr = BATADV_ATTR_MAX,
+ .netnsok = true,
+ .module = THIS_MODULE,
+ .ops = batadv_netlink_ops,
+ .n_ops = ARRAY_SIZE(batadv_netlink_ops),
+ .mcgrps = batadv_netlink_mcgrps,
+ .n_mcgrps = ARRAY_SIZE(batadv_netlink_mcgrps),
+};
+
+/**
+ * batadv_netlink_register - register batadv genl netlink family
+ */
+void __init batadv_netlink_register(void)
+{
+ int ret;
+
+ ret = genl_register_family(&batadv_netlink_family);
+ if (ret)
+ pr_warn("unable to register netlink family");
+}
+
+/**
+ * batadv_netlink_unregister - unregister batadv genl netlink family
+ */
+void batadv_netlink_unregister(void)
+{
+ genl_unregister_family(&batadv_netlink_family);
+}