msm8996-common: Import IPACM back

 * QC package: LA.UM.6.5.r1-05300-8x96.0

 * Squashed with commits 08e2a5b9b, 055b183 and 8fcf57b

Change-Id: I2f7a792dc0155986e065d1bf79e1f08370c3d79c
Signed-off-by: Davide Garberi <dade.garberi@gmail.com>

1 files changed, 745 insertions, 0 deletions

diff --git a/data-ipa-cfg-mgr/ipacm/src/IPACM_OffloadManager.cpp b/data-ipa-cfg-mgr/ipacm/src/IPACM_OffloadManager.cpp
new file mode 100644
index 0000000..853cc89
--- /dev/null
+++ b/data-ipa-cfg-mgr/ipacm/src/IPACM_OffloadManager.cpp
@@ -0,0 +1,745 @@
+/*
+Copyright (c) 2017, The Linux Foundation. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+* Redistributions of source code must retain the above copyright
+  notice, this list of conditions and the following disclaimer.
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the following
+  disclaimer in the documentation and/or other materials provided
+  with the distribution.
+* Neither the name of The Linux Foundation nor the names of its
+  contributors may be used to endorse or promote products derived
+  from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.Z
+*/
+/*!
+  @file
+  IPACM_OffloadManager.cpp
+
+  @brief
+  This file implements the basis Iface functionality.
+
+  @Author
+  Skylar Chang
+
+*/
+#include <IPACM_OffloadManager.h>
+#include <sys/ioctl.h>
+#include <net/if.h>
+#include <string.h>
+#include "IPACM_ConntrackClient.h"
+#include "IPACM_ConntrackListener.h"
+#include "IPACM_Iface.h"
+#include "IPACM_Config.h"
+#include <unistd.h>
+
+const char *IPACM_OffloadManager::DEVICE_NAME = "/dev/wwan_ioctl";
+
+/* NatApp class Implementation */
+IPACM_OffloadManager *IPACM_OffloadManager::pInstance = NULL;
+
+IPACM_OffloadManager::IPACM_OffloadManager()
+{
+	default_gw_index = INVALID_IFACE;
+	upstream_v4_up = false;
+	upstream_v6_up = false;
+	memset(event_cache, 0, MAX_EVENT_CACHE*sizeof(framework_event_cache));
+	latest_cache_index = 0;
+	elrInstance = NULL;
+	touInstance = NULL;
+	return ;
+}
+
+RET IPACM_OffloadManager::registerEventListener(IpaEventListener* eventlistener)
+{
+	RET result = SUCCESS;
+	if (elrInstance == NULL) {
+		IPACMDBG_H("get registerEventListener \n");
+		elrInstance = eventlistener;
+	} else {
+		IPACMDBG_H("already have EventListener previously, override \n");
+		elrInstance = eventlistener;
+		result = FAIL_INPUT_CHECK;
+	}
+	return SUCCESS;
+}
+
+RET IPACM_OffloadManager::unregisterEventListener(IpaEventListener* )
+{
+	RET result = SUCCESS;
+	if (elrInstance)
+		elrInstance = NULL;
+	else {
+		IPACMDBG_H("already unregisterEventListener previously \n");
+		result = SUCCESS_DUPLICATE_CONFIG;
+	}
+	return SUCCESS;
+}
+
+RET IPACM_OffloadManager::registerCtTimeoutUpdater(ConntrackTimeoutUpdater* timeoutupdater)
+{
+	RET result = SUCCESS;
+	if (touInstance == NULL)
+	{
+		IPACMDBG_H("get ConntrackTimeoutUpdater \n");
+		touInstance = timeoutupdater;
+	} else {
+		IPACMDBG_H("already have ConntrackTimeoutUpdater previously, override \n");
+		touInstance = timeoutupdater;
+		result = FAIL_INPUT_CHECK;
+	}
+	return SUCCESS;
+}
+
+RET IPACM_OffloadManager::unregisterCtTimeoutUpdater(ConntrackTimeoutUpdater* )
+{
+	RET result = SUCCESS;
+	if (touInstance)
+		touInstance = NULL;
+	else {
+		IPACMDBG_H("already unregisterCtTimeoutUpdater previously \n");
+		result = SUCCESS_DUPLICATE_CONFIG;
+	}
+	return SUCCESS;
+}
+
+RET IPACM_OffloadManager::provideFd(int fd, unsigned int groups)
+{
+	IPACM_ConntrackClient *cc;
+	int on = 1, rel;
+	struct sockaddr_nl	local;
+	unsigned int addr_len;
+
+	cc = IPACM_ConntrackClient::GetInstance();
+
+	if(!cc)
+	{
+		IPACMERR("Init failed: cc %p\n", cc);
+		return FAIL_HARDWARE;
+	}
+
+	/* check socket name */
+	memset(&local, 0, sizeof(struct sockaddr_nl));
+	addr_len = sizeof(local);
+	getsockname(fd, (struct sockaddr *)&local, (socklen_t *)&addr_len);
+	IPACMDBG_H(" FD %d, nl_pad %d nl_pid %u\n", fd, local.nl_pad, local.nl_pid);
+
+	/* add the check if getting FDs already or not */
+	if(cc->fd_tcp > -1 && cc->fd_udp > -1) {
+		IPACMDBG_H("has valid FDs fd_tcp %d, fd_udp %d, ignore fd %d.\n", cc->fd_tcp, cc->fd_udp, fd);
+		return SUCCESS;
+	}
+
+	if (groups == cc->subscrips_tcp) {
+		cc->fd_tcp = dup(fd);
+		IPACMDBG_H("Received fd %d with groups %d.\n", fd, groups);
+		/* set netlink buf */
+		rel = setsockopt(cc->fd_tcp, SOL_NETLINK, NETLINK_NO_ENOBUFS, &on, sizeof(int) );
+		if (rel == -1)
+		{
+			IPACMERR( "setsockopt returned error code %d ( %s )", errno, strerror( errno ) );
+		}
+	} else if (groups == cc->subscrips_udp) {
+		cc->fd_udp = dup(fd);
+		IPACMDBG_H("Received fd %d with groups %d.\n", fd, groups);
+		/* set netlink buf */
+		rel = setsockopt(cc->fd_tcp, SOL_NETLINK, NETLINK_NO_ENOBUFS, &on, sizeof(int) );
+		if (rel == -1)
+		{
+			IPACMERR( "setsockopt returned error code %d ( %s )", errno, strerror( errno ) );
+		}
+	} else {
+		IPACMERR("Received unexpected fd with groups %d.\n", groups);
+	}
+	if(cc->fd_tcp >0 && cc->fd_udp >0) {
+		IPACMDBG_H(" Got both fds from framework, start conntrack listener thread.\n");
+		CtList->CreateConnTrackThreads();
+	}
+	return SUCCESS;
+}
+
+RET IPACM_OffloadManager::clearAllFds()
+{
+
+	/* IPACM needs to kee old FDs, can't clear */
+	IPACMDBG_H("Still use old Fds, can't clear \n");
+	return SUCCESS;
+}
+
+bool IPACM_OffloadManager::isStaApSupported()
+{
+	return true;
+}
+
+
+RET IPACM_OffloadManager::setLocalPrefixes(std::vector<Prefix> &/* prefixes */)
+{
+	return SUCCESS;
+}
+
+RET IPACM_OffloadManager::addDownstream(const char * downstream_name, const Prefix &prefix)
+{
+	int index;
+	ipacm_cmd_q_data evt;
+	ipacm_event_ipahal_stream *evt_data;
+
+	IPACMDBG_H("addDownstream name(%s), ip-family(%d) \n", downstream_name, prefix.fam);
+
+	if (prefix.fam == V4) {
+		IPACMDBG_H("subnet info v4Addr (%x) v4Mask (%x)\n", prefix.v4Addr, prefix.v4Mask);
+	} else {
+		IPACMDBG_H("subnet info v6Addr: %08x:%08x:%08x:%08x \n",
+							prefix.v6Addr[0], prefix.v6Addr[1], prefix.v6Addr[2], prefix.v6Addr[3]);
+		IPACMDBG_H("subnet info v6Mask: %08x:%08x:%08x:%08x \n",
+							prefix.v6Mask[0], prefix.v6Mask[1], prefix.v6Mask[2], prefix.v6Mask[3]);
+	}
+
+	/* check if netdev valid on device */
+	if(ipa_get_if_index(downstream_name, &index))
+	{
+		IPACMERR("fail to get iface index.\n");
+		return FAIL_INPUT_CHECK;
+	}
+	/* Iface is valid, add to list if not present */
+	if (std::find(valid_ifaces.begin(), valid_ifaces.end(), std::string(downstream_name)) == valid_ifaces.end())
+	{
+		/* Iface is new, add it to the list */
+		valid_ifaces.push_back(downstream_name);
+		IPACMDBG_H("add iface(%s) to list\n", downstream_name);
+	}
+
+	/* check if downstream netdev driver finished its configuration on IPA-HW */
+	if (IPACM_Iface::ipacmcfg->CheckNatIfaces(downstream_name))
+	{
+		IPACMDBG_H("addDownstream name(%s) currently not support in ipa \n", downstream_name);
+		/* copy to the cache */
+		for(int i = 0; i < MAX_EVENT_CACHE ;i++)
+		{
+			if(event_cache[latest_cache_index].valid == false)
+			{
+				//do the copy
+				event_cache[latest_cache_index].valid = true;
+				event_cache[latest_cache_index].event = IPA_DOWNSTREAM_ADD;
+				memcpy(event_cache[latest_cache_index].dev_name, downstream_name, sizeof(event_cache[latest_cache_index].dev_name));
+				memcpy(&event_cache[latest_cache_index].prefix_cache, &prefix, sizeof(event_cache[latest_cache_index].prefix_cache));
+				if (prefix.fam == V4) {
+					IPACMDBG_H("cache event(%d) subnet info v4Addr (%x) v4Mask (%x) dev(%s) on entry (%d)\n",
+						event_cache[latest_cache_index].event,
+						event_cache[latest_cache_index].prefix_cache.v4Addr,
+						event_cache[latest_cache_index].prefix_cache.v4Mask,
+						event_cache[latest_cache_index].dev_name,
+						latest_cache_index);
+				} else {
+					IPACMDBG_H("cache event (%d) v6Addr: %08x:%08x:%08x:%08x \n",
+						event_cache[latest_cache_index].event,
+						event_cache[latest_cache_index].prefix_cache.v6Addr[0],
+						event_cache[latest_cache_index].prefix_cache.v6Addr[1],
+						event_cache[latest_cache_index].prefix_cache.v6Addr[2],
+						event_cache[latest_cache_index].prefix_cache.v6Addr[3]);
+					IPACMDBG_H("subnet v6Mask: %08x:%08x:%08x:%08x dev(%s) on entry(%d), \n",
+						event_cache[latest_cache_index].prefix_cache.v6Mask[0],
+						event_cache[latest_cache_index].prefix_cache.v6Mask[1],
+						event_cache[latest_cache_index].prefix_cache.v6Mask[2],
+						event_cache[latest_cache_index].prefix_cache.v6Mask[3],
+						event_cache[latest_cache_index].dev_name,
+						latest_cache_index);
+				}
+				latest_cache_index = (latest_cache_index + 1)% MAX_EVENT_CACHE;
+				break;
+			}
+			latest_cache_index = (latest_cache_index + 1)% MAX_EVENT_CACHE;
+			if(i == MAX_EVENT_CACHE - 1)
+			{
+				IPACMDBG_H(" run out of event cache (%d)\n", i);
+		return FAIL_HARDWARE;
+	}
+		}
+
+		return SUCCESS;
+	}
+
+	evt_data = (ipacm_event_ipahal_stream*)malloc(sizeof(ipacm_event_ipahal_stream));
+	if(evt_data == NULL)
+	{
+		IPACMERR("Failed to allocate memory.\n");
+		return FAIL_HARDWARE;
+	}
+	memset(evt_data, 0, sizeof(*evt_data));
+
+	evt_data->if_index = index;
+	memcpy(&evt_data->prefix, &prefix, sizeof(evt_data->prefix));
+
+	memset(&evt, 0, sizeof(ipacm_cmd_q_data));
+	evt.evt_data = (void*)evt_data;
+	evt.event = IPA_DOWNSTREAM_ADD;
+
+	IPACMDBG_H("Posting event IPA_DOWNSTREAM_ADD\n");
+	IPACM_EvtDispatcher::PostEvt(&evt);
+
+	return SUCCESS;
+}
+
+RET IPACM_OffloadManager::removeDownstream(const char * downstream_name, const Prefix &prefix)
+{
+	int index;
+	ipacm_cmd_q_data evt;
+	ipacm_event_ipahal_stream *evt_data;
+
+	IPACMDBG_H("removeDownstream name(%s), ip-family(%d) \n", downstream_name, prefix.fam);
+	if(strnlen(downstream_name, sizeof(downstream_name)) == 0)
+	{
+		IPACMERR("iface length is 0.\n");
+		return FAIL_HARDWARE;
+	}
+	if (std::find(valid_ifaces.begin(), valid_ifaces.end(), std::string(downstream_name)) == valid_ifaces.end())
+	{
+		IPACMERR("iface is not present in list.\n");
+		return FAIL_HARDWARE;
+	}
+
+	if(ipa_get_if_index(downstream_name, &index))
+	{
+		IPACMERR("netdev(%s) already removed, ignored\n", downstream_name);
+		return SUCCESS;
+	}
+
+	evt_data = (ipacm_event_ipahal_stream*)malloc(sizeof(ipacm_event_ipahal_stream));
+	if(evt_data == NULL)
+	{
+		IPACMERR("Failed to allocate memory.\n");
+		return FAIL_HARDWARE;
+	}
+	memset(evt_data, 0, sizeof(*evt_data));
+
+	evt_data->if_index = index;
+	memcpy(&evt_data->prefix, &prefix, sizeof(evt_data->prefix));
+
+	memset(&evt, 0, sizeof(ipacm_cmd_q_data));
+	evt.evt_data = (void*)evt_data;
+	evt.event = IPA_DOWNSTREAM_DEL;
+
+	IPACMDBG_H("Posting event IPA_DOWNSTREAM_DEL\n");
+	IPACM_EvtDispatcher::PostEvt(&evt);
+
+	return SUCCESS;
+}
+
+RET IPACM_OffloadManager::setUpstream(const char *upstream_name, const Prefix& gw_addr_v4 , const Prefix& gw_addr_v6)
+{
+	int index;
+	RET result = SUCCESS;
+
+	/* if interface name is NULL, default route is removed */
+	if(upstream_name != NULL)
+	{
+		IPACMDBG_H("setUpstream upstream_name(%s), ipv4-fam(%d) ipv6-fam(%d)\n", upstream_name, gw_addr_v4.fam, gw_addr_v6.fam);
+	}
+	else
+	{
+		IPACMDBG_H("setUpstream clean upstream_name for ipv4-fam(%d) ipv6-fam(%d)\n", gw_addr_v4.fam, gw_addr_v6.fam);
+	}
+	if(upstream_name == NULL)
+	{
+		if (default_gw_index == INVALID_IFACE) {
+			IPACMERR("no previous upstream set before\n");
+			return FAIL_INPUT_CHECK;
+		}
+		if (gw_addr_v4.fam == V4 && upstream_v4_up == true) {
+			IPACMDBG_H("clean upstream for ipv4-fam(%d) upstream_v4_up(%d)\n", gw_addr_v4.fam, upstream_v4_up);
+			post_route_evt(IPA_IP_v4, default_gw_index, IPA_WAN_UPSTREAM_ROUTE_DEL_EVENT, gw_addr_v4);
+			upstream_v4_up = false;
+		}
+		if (gw_addr_v6.fam == V6 && upstream_v6_up == true) {
+			IPACMDBG_H("clean upstream for ipv6-fam(%d) upstream_v6_up(%d)\n", gw_addr_v6.fam, upstream_v6_up);
+			post_route_evt(IPA_IP_v6, default_gw_index, IPA_WAN_UPSTREAM_ROUTE_DEL_EVENT, gw_addr_v6);
+			upstream_v6_up = false;
+		}
+		default_gw_index = INVALID_IFACE;
+	}
+	else
+	{
+		/* check if netdev valid on device */
+		if(ipa_get_if_index(upstream_name, &index))
+		{
+			IPACMERR("fail to get iface index.\n");
+			return FAIL_INPUT_CHECK;
+		}
+
+		/* check if downstream netdev driver finished its configuration on IPA-HW */
+		if (IPACM_Iface::ipacmcfg->CheckNatIfaces(upstream_name))
+		{
+			IPACMDBG_H("setUpstream name(%s) currently not support in ipa \n", upstream_name);
+			/* copy to the cache */
+			for(int i = 0; i < MAX_EVENT_CACHE ;i++)
+			{
+				if(event_cache[latest_cache_index].valid == false)
+				{
+					//do the copy
+					event_cache[latest_cache_index].valid = true;
+					event_cache[latest_cache_index].event = IPA_WAN_UPSTREAM_ROUTE_ADD_EVENT;
+					memcpy(event_cache[latest_cache_index].dev_name, upstream_name, sizeof(event_cache[latest_cache_index].dev_name));
+					memcpy(&event_cache[latest_cache_index].prefix_cache, &gw_addr_v4, sizeof(event_cache[latest_cache_index].prefix_cache));
+					memcpy(&event_cache[latest_cache_index].prefix_cache_v6, &gw_addr_v6, sizeof(event_cache[latest_cache_index].prefix_cache_v6));
+					if (gw_addr_v4.fam == V4) {
+						IPACMDBG_H("cache event(%d) ipv4 fateway: (%x) dev(%s) on entry (%d)\n",
+							event_cache[latest_cache_index].event,
+							event_cache[latest_cache_index].prefix_cache.v4Addr,
+							event_cache[latest_cache_index].dev_name,
+							latest_cache_index);
+		}
+
+					if (gw_addr_v6.fam == V6)
+		{
+						IPACMDBG_H("cache event (%d) ipv6 gateway: %08x:%08x:%08x:%08x dev(%s) on entry(%d)\n",
+							event_cache[latest_cache_index].event,
+							event_cache[latest_cache_index].prefix_cache_v6.v6Addr[0],
+							event_cache[latest_cache_index].prefix_cache_v6.v6Addr[1],
+							event_cache[latest_cache_index].prefix_cache_v6.v6Addr[2],
+							event_cache[latest_cache_index].prefix_cache_v6.v6Addr[3],
+							event_cache[latest_cache_index].dev_name,
+							latest_cache_index);
+					}
+					latest_cache_index = (latest_cache_index + 1)% MAX_EVENT_CACHE;
+					break;
+				}
+				latest_cache_index = (latest_cache_index + 1)% MAX_EVENT_CACHE;
+				if(i == MAX_EVENT_CACHE - 1)
+				{
+					IPACMDBG_H(" run out of event cache (%d) \n", i);
+					return FAIL_HARDWARE;
+				}
+			}
+			return SUCCESS;
+		}
+
+		/* reset the stats when switch from LTE->STA */
+		if (index != default_gw_index) {
+			IPACMDBG_H(" interface switched to %s\n", upstream_name);
+			if(memcmp(upstream_name, "wlan0", sizeof("wlan0")) == 0)
+			{
+				IPACMDBG_H("switch to STA mode, need reset wlan-fw stats\n");
+				resetTetherStats(upstream_name);
+			}
+		}
+
+		if (gw_addr_v4.fam == V4 && gw_addr_v6.fam == V6) {
+
+			if (upstream_v4_up == false) {
+				IPACMDBG_H("IPV4 gateway: 0x%x \n", gw_addr_v4.v4Addr);
+				/* posting route add event for both IPv4 and IPv6 */
+				post_route_evt(IPA_IP_v4, index, IPA_WAN_UPSTREAM_ROUTE_ADD_EVENT, gw_addr_v4);
+				upstream_v4_up = true;
+			} else {
+				IPACMDBG_H("already setupstream iface(%s) ipv4 previously\n", upstream_name);
+			}
+
+			if (upstream_v6_up == false) {
+				IPACMDBG_H("IPV6 gateway: %08x:%08x:%08x:%08x \n",
+						gw_addr_v6.v6Addr[0], gw_addr_v6.v6Addr[1], gw_addr_v6.v6Addr[2], gw_addr_v6.v6Addr[3]);
+				/* check v6-address valid or not */
+				if((gw_addr_v6.v6Addr[0] == 0) && (gw_addr_v6.v6Addr[1] ==0) && (gw_addr_v6.v6Addr[2] == 0) && (gw_addr_v6.v6Addr[3] == 0))
+				{
+					IPACMDBG_H("Invliad ipv6-address, ignored v6-setupstream\n");
+				} else {
+					post_route_evt(IPA_IP_v6, index, IPA_WAN_UPSTREAM_ROUTE_ADD_EVENT, gw_addr_v6);
+					upstream_v6_up = true;
+				}
+			} else {
+				IPACMDBG_H("already setupstream iface(%s) ipv6 previously\n", upstream_name);
+			}
+		} else if (gw_addr_v4.fam == V4 ) {
+			IPACMDBG_H("check upstream_v6_up (%d) v4_up (%d), default gw index (%d)\n", upstream_v6_up, upstream_v4_up, default_gw_index);
+			if (upstream_v6_up == true && default_gw_index != INVALID_IFACE ) {
+				/* clean up previous V6 upstream event */
+				IPACMDBG_H(" Post clean-up v6 default gw on iface %d\n", default_gw_index);
+				post_route_evt(IPA_IP_v6, default_gw_index, IPA_WAN_UPSTREAM_ROUTE_DEL_EVENT, gw_addr_v6);
+				upstream_v6_up = false;
+			}
+
+			if (upstream_v4_up == false) {
+				IPACMDBG_H("IPV4 gateway: %x \n", gw_addr_v4.v4Addr);
+				/* posting route add event for both IPv4 and IPv6 */
+				post_route_evt(IPA_IP_v4, index, IPA_WAN_UPSTREAM_ROUTE_ADD_EVENT, gw_addr_v4);
+				upstream_v4_up = true;
+			} else {
+				IPACMDBG_H("already setupstream iface(%s) ipv4 previously\n", upstream_name);
+				result = SUCCESS_DUPLICATE_CONFIG;
+			}
+		} else if (gw_addr_v6.fam == V6) {
+			IPACMDBG_H("check upstream_v6_up (%d) v4_up (%d), default gw index (%d)\n", upstream_v6_up, upstream_v4_up, default_gw_index);
+			if (upstream_v4_up == true && default_gw_index != INVALID_IFACE ) {
+				/* clean up previous V4 upstream event */
+				IPACMDBG_H(" Post clean-up v4 default gw on iface %d\n", default_gw_index);
+				post_route_evt(IPA_IP_v4, default_gw_index, IPA_WAN_UPSTREAM_ROUTE_DEL_EVENT, gw_addr_v4);
+				upstream_v4_up = false;
+			}
+
+			if (upstream_v6_up == false) {
+				IPACMDBG_H("IPV6 gateway: %08x:%08x:%08x:%08x \n",
+						gw_addr_v6.v6Addr[0], gw_addr_v6.v6Addr[1], gw_addr_v6.v6Addr[2], gw_addr_v6.v6Addr[3]);
+				/* check v6-address valid or not */
+				if((gw_addr_v6.v6Addr[0] == 0) && (gw_addr_v6.v6Addr[1] ==0) && (gw_addr_v6.v6Addr[2] == 0) && (gw_addr_v6.v6Addr[3] == 0))
+				{
+					IPACMDBG_H("Invliad ipv6-address, ignored v6-setupstream\n");
+				} else {
+					post_route_evt(IPA_IP_v6, index, IPA_WAN_UPSTREAM_ROUTE_ADD_EVENT, gw_addr_v6);
+					upstream_v6_up = true;
+				}
+			} else {
+				IPACMDBG_H("already setupstream iface(%s) ipv6 previously\n", upstream_name);
+				result = SUCCESS_DUPLICATE_CONFIG;
+			}
+		}
+		default_gw_index = index;
+		IPACMDBG_H("Change degault_gw netdev to (%s)\n", upstream_name);
+	}
+	return result;
+}
+
+RET IPACM_OffloadManager::stopAllOffload()
+{
+	Prefix v4gw, v6gw;
+	RET result = SUCCESS;
+
+	memset(&v4gw, 0, sizeof(v4gw));
+	memset(&v6gw, 0, sizeof(v6gw));
+	v4gw.fam = V4;
+	v6gw.fam = V6;
+	IPACMDBG_H("posting setUpstream(NULL), ipv4-fam(%d) ipv6-fam(%d)\n", v4gw.fam, v6gw.fam);
+	result = setUpstream(NULL, v4gw, v6gw);
+
+	/* reset the event cache */
+	default_gw_index = INVALID_IFACE;
+	upstream_v4_up = false;
+	upstream_v6_up = false;
+	memset(event_cache, 0, MAX_EVENT_CACHE*sizeof(framework_event_cache));
+	latest_cache_index = 0;
+	valid_ifaces.clear();
+	return result;
+}
+
+RET IPACM_OffloadManager::setQuota(const char * upstream_name /* upstream */, uint64_t mb/* limit */)
+{
+	wan_ioctl_set_data_quota quota;
+	int fd = -1;
+
+	if ((fd = open(DEVICE_NAME, O_RDWR)) < 0)
+	{
+		IPACMERR("Failed opening %s.\n", DEVICE_NAME);
+		return FAIL_HARDWARE;
+	}
+
+	quota.quota_mbytes = mb;
+	quota.set_quota = true;
+
+    memset(quota.interface_name, 0, IFNAMSIZ);
+    if (strlcpy(quota.interface_name, upstream_name, IFNAMSIZ) >= IFNAMSIZ) {
+		IPACMERR("String truncation occurred on upstream");
+		close(fd);
+		return FAIL_INPUT_CHECK;
+	}
+
+	IPACMDBG_H("SET_DATA_QUOTA %s %llu", quota.interface_name, (long long)mb);
+
+	if (ioctl(fd, WAN_IOC_SET_DATA_QUOTA, &quota) < 0) {
+        IPACMERR("IOCTL WAN_IOCTL_SET_DATA_QUOTA call failed: %s", strerror(errno));
+		close(fd);
+		return FAIL_TRY_AGAIN;
+	}
+
+	close(fd);
+	return SUCCESS;
+}
+
+RET IPACM_OffloadManager::getStats(const char * upstream_name /* upstream */,
+		bool reset /* reset */, OffloadStatistics& offload_stats/* ret */)
+{
+	int fd = -1;
+	wan_ioctl_query_tether_stats_all stats;
+
+	if ((fd = open(DEVICE_NAME, O_RDWR)) < 0) {
+        IPACMERR("Failed opening %s.\n", DEVICE_NAME);
+        return FAIL_HARDWARE;
+    }
+
+    memset(&stats, 0, sizeof(stats));
+    if (strlcpy(stats.upstreamIface, upstream_name, IFNAMSIZ) >= IFNAMSIZ) {
+		IPACMERR("String truncation occurred on upstream\n");
+		close(fd);
+		return FAIL_INPUT_CHECK;
+	}
+	stats.reset_stats = reset;
+	stats.ipa_client = IPACM_CLIENT_MAX;
+
+	if (ioctl(fd, WAN_IOC_QUERY_TETHER_STATS_ALL, &stats) < 0) {
+        IPACMERR("IOCTL WAN_IOC_QUERY_TETHER_STATS_ALL call failed: %s \n", strerror(errno));
+		close(fd);
+		return FAIL_TRY_AGAIN;
+	}
+	/* feedback to IPAHAL*/
+	offload_stats.tx = stats.tx_bytes;
+	offload_stats.rx = stats.rx_bytes;
+
+	IPACMDBG_H("send getStats tx:%llu rx:%llu \n", (long long)offload_stats.tx, (long long)offload_stats.rx);
+	close(fd);
+	return SUCCESS;
+}
+
+int IPACM_OffloadManager::post_route_evt(enum ipa_ip_type iptype, int index, ipa_cm_event_id event, const Prefix &gw_addr)
+{
+	ipacm_cmd_q_data evt;
+	ipacm_event_data_iptype *evt_data_route;
+
+	evt_data_route = (ipacm_event_data_iptype*)malloc(sizeof(ipacm_event_data_iptype));
+	if(evt_data_route == NULL)
+	{
+		IPACMERR("Failed to allocate memory.\n");
+		return -EFAULT;
+	}
+	memset(evt_data_route, 0, sizeof(*evt_data_route));
+
+	evt_data_route->if_index = index;
+	evt_data_route->if_index_tether = 0;
+	evt_data_route->iptype = iptype;
+
+	IPACMDBG_H("gw_addr.v4Addr: %d, gw_addr.v6Addr: %08x:%08x:%08x:%08x \n",
+			gw_addr.v4Addr,gw_addr.v6Addr[0],gw_addr.v6Addr[1],gw_addr.v6Addr[2],gw_addr.v6Addr[3]);
+
+#ifdef IPA_WAN_MSG_IPv6_ADDR_GW_LEN
+	evt_data_route->ipv4_addr_gw = gw_addr.v4Addr;
+	evt_data_route->ipv6_addr_gw[0] = gw_addr.v6Addr[0];
+	evt_data_route->ipv6_addr_gw[1] = gw_addr.v6Addr[1];
+	evt_data_route->ipv6_addr_gw[2] = gw_addr.v6Addr[2];
+	evt_data_route->ipv6_addr_gw[3] = gw_addr.v6Addr[3];
+	IPACMDBG_H("default gw ipv4 (%x)\n", evt_data_route->ipv4_addr_gw);
+	IPACMDBG_H("IPV6 gateway: %08x:%08x:%08x:%08x \n",
+					evt_data_route->ipv6_addr_gw[0], evt_data_route->ipv6_addr_gw[1], evt_data_route->ipv6_addr_gw[2], evt_data_route->ipv6_addr_gw[3]);
+#endif
+	IPACMDBG_H("Received WAN_UPSTREAM_ROUTE_ADD: fid(%d) tether_fid(%d) ip-type(%d)\n", evt_data_route->if_index,
+			evt_data_route->if_index_tether, evt_data_route->iptype);
+
+	memset(&evt, 0, sizeof(evt));
+	evt.evt_data = (void*)evt_data_route;
+	evt.event = event;
+
+	IPACM_EvtDispatcher::PostEvt(&evt);
+
+	return 0;
+}
+
+int IPACM_OffloadManager::ipa_get_if_index(const char * if_name, int * if_index)
+{
+	int fd;
+	struct ifreq ifr;
+
+	if((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
+	{
+		IPACMERR("get interface index socket create failed \n");
+		return IPACM_FAILURE;
+	}
+
+	if(strnlen(if_name, sizeof(if_name)) >= sizeof(ifr.ifr_name)) {
+		IPACMERR("interface name overflows: len %zu\n", strnlen(if_name, sizeof(if_name)));
+		close(fd);
+		return IPACM_FAILURE;
+	}
+
+	memset(&ifr, 0, sizeof(struct ifreq));
+	(void)strlcpy(ifr.ifr_name, if_name, sizeof(ifr.ifr_name));
+	IPACMDBG_H("interface name (%s)\n", if_name);
+
+	if(ioctl(fd,SIOCGIFINDEX , &ifr) < 0)
+	{
+		IPACMERR("call_ioctl_on_dev: ioctl failed, interface name (%s):\n", ifr.ifr_name);
+		close(fd);
+		return IPACM_FAILURE;
+	}
+
+	*if_index = ifr.ifr_ifindex;
+	IPACMDBG_H("Interface netdev index %d\n", *if_index);
+	close(fd);
+	return IPACM_SUCCESS;
+}
+
+int IPACM_OffloadManager::resetTetherStats(const char * upstream_name /* upstream */)
+{
+	int fd = -1;
+	wan_ioctl_reset_tether_stats stats;
+
+	if ((fd = open(DEVICE_NAME, O_RDWR)) < 0) {
+        IPACMERR("Failed opening %s.\n", DEVICE_NAME);
+        return FAIL_HARDWARE;
+    }
+
+    memset(stats.upstreamIface, 0, IFNAMSIZ);
+    if (strlcpy(stats.upstreamIface, upstream_name, IFNAMSIZ) >= IFNAMSIZ) {
+		IPACMERR("String truncation occurred on upstream\n");
+		close(fd);
+		return FAIL_INPUT_CHECK;
+	}
+	stats.reset_stats = true;
+
+	if (ioctl(fd, WAN_IOC_RESET_TETHER_STATS, &stats) < 0) {
+        IPACMERR("IOCTL WAN_IOC_RESET_TETHER_STATS call failed: %s", strerror(errno));
+		close(fd);
+		return FAIL_HARDWARE;
+	}
+	IPACMDBG_H("Reset Interface %s stats\n", upstream_name);
+	close(fd);
+	return IPACM_SUCCESS;
+}
+
+IPACM_OffloadManager* IPACM_OffloadManager::GetInstance()
+{
+	if(pInstance == NULL)
+		pInstance = new IPACM_OffloadManager();
+
+	return pInstance;
+}
+
+bool IPACM_OffloadManager::search_framwork_cache(char * interface_name)
+{
+	bool rel = false;
+
+	/* IPACM needs to kee old FDs, can't clear */
+	IPACMDBG_H("check netdev(%s)\n", interface_name);
+
+	for(int i = 0; i < MAX_EVENT_CACHE ;i++)
+	{
+		if(event_cache[i].valid == true)
+		{
+			//do the compare
+			if (strncmp(event_cache[i].dev_name,
+					interface_name,
+					sizeof(event_cache[i].dev_name)) == 0)
+			{
+				IPACMDBG_H("found netdev (%s) in entry (%d) with event (%d)\n", interface_name, i, event_cache[i].event);
+				/* post event again */
+				if (event_cache[i].event == IPA_DOWNSTREAM_ADD)
+					addDownstream(interface_name, event_cache[i].prefix_cache);
+				else if (event_cache[i].event == IPA_WAN_UPSTREAM_ROUTE_ADD_EVENT)
+					setUpstream(interface_name, event_cache[i].prefix_cache, event_cache[i].prefix_cache_v6);
+				else
+					IPACMERR("wrong event cached (%d)", event_cache[i].event);
+				event_cache[i].valid = false;
+				rel = true;
+			}
+		}
+	}
+	IPACMDBG_H(" not found netdev (%s) has cached event\n", interface_name);
+	return rel;
+}