ipacm/src/IPACM_Routing.cpp

/*
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/*!
	@file
	IPACM_Routing.cpp

	@brief
	This file implements the IPACM routing functionality.

	@Author

*/

#include <unistd.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>

#include "IPACM_Routing.h"
#include <IPACM_Log.h>

const char *IPACM_Routing::DEVICE_NAME = "/dev/ipa";

IPACM_Routing::IPACM_Routing()
{
	m_fd = open(DEVICE_NAME, O_RDWR);
	if (0 == m_fd)
	{
		IPACMERR("Failed opening %s.\n", DEVICE_NAME);
	}
}

IPACM_Routing::~IPACM_Routing()
{
	close(m_fd);
}

bool IPACM_Routing::DeviceNodeIsOpened()
{
	int res = fcntl(m_fd, F_GETFL);

	if (m_fd > 0 && res >= 0) return true;
	else return false;

}

bool IPACM_Routing::AddRoutingRule(struct ipa_ioc_add_rt_rule *ruleTable)
{
	int retval = 0, cnt=0;
	bool isInvalid = false;

	if (!DeviceNodeIsOpened())
	{
		IPACMERR("Device is not opened\n");
		return false;
	}

	for(cnt=0; cnt<ruleTable->num_rules; cnt++)
	{
		if(ruleTable->rules[cnt].rule.dst > IPA_CLIENT_MAX)
		{
			IPACMERR("Invalid dst pipe, Rule:%d  dst_pipe:%d\n", cnt, ruleTable->rules[cnt].rule.dst);
			isInvalid = true;
		}
	}

	if(isInvalid)
	{
		return false;
	}

	retval = ioctl(m_fd, IPA_IOC_ADD_RT_RULE, ruleTable);
	if (retval)
	{
		IPACMERR("Failed adding routing rule %p\n", ruleTable);
		return false;
	}

	for(cnt=0; cnt<ruleTable->num_rules; cnt++)
	{
		IPACMDBG("Rule:%d  dst_pipe:%d\n", cnt, ruleTable->rules[cnt].rule.dst);
	}

	IPACMDBG_H("Added routing rule %p\n", ruleTable);
	return true;
}

bool IPACM_Routing::DeleteRoutingRule(struct ipa_ioc_del_rt_rule *ruleTable)
{
	int retval = 0;

	if (!DeviceNodeIsOpened()) return false;

	retval = ioctl(m_fd, IPA_IOC_DEL_RT_RULE, ruleTable);
	if (retval)
	{
		IPACMERR("Failed deleting routing rule table %p\n", ruleTable);
		return false;
	}

	IPACMDBG_H("Deleted routing rule %p\n", ruleTable);
	return true;
}

bool IPACM_Routing::Commit(enum ipa_ip_type ip)
{
	int retval = 0;

	if (!DeviceNodeIsOpened()) return false;

	retval = ioctl(m_fd, IPA_IOC_COMMIT_RT, ip);
	if (retval)
	{
		IPACMERR("Failed commiting routing rules.\n");
		return false;
	}

	IPACMDBG_H("Commited routing rules to IPA HW.\n");
	return true;
}

bool IPACM_Routing::Reset(enum ipa_ip_type ip)
{
	int retval = 0;

	if (!DeviceNodeIsOpened()) return false;

	retval = ioctl(m_fd, IPA_IOC_RESET_RT, ip);
	retval |= ioctl(m_fd, IPA_IOC_COMMIT_RT, ip);
	if (retval)
	{
		IPACMERR("Failed resetting routing block.\n");
		return false;
	}

	IPACMDBG_H("Reset command issued to IPA routing block.\n");
	return true;
}

bool IPACM_Routing::GetRoutingTable(struct ipa_ioc_get_rt_tbl *routingTable)
{
	int retval = 0;

	if (!DeviceNodeIsOpened()) return false;

	retval = ioctl(m_fd, IPA_IOC_GET_RT_TBL, routingTable);
	if (retval)
	{
		IPACMERR("IPA_IOCTL_GET_RT_TBL ioctl failed, routingTable =0x%p, retval=0x%x.\n", routingTable, retval);
		return false;
	}
	IPACMDBG_H("IPA_IOCTL_GET_RT_TBL ioctl issued to IPA routing block.\n");
	/* put routing table right after successfully get routing table */
	PutRoutingTable(routingTable->hdl);

	return true;
}

bool IPACM_Routing::PutRoutingTable(uint32_t routingTableHandle)
{
	int retval = 0;

	if (!DeviceNodeIsOpened()) return false;

	retval = ioctl(m_fd, IPA_IOC_PUT_RT_TBL, routingTableHandle);
	if (retval)
	{
		IPACMERR("IPA_IOCTL_PUT_RT_TBL ioctl failed.\n");
		return false;
	}

	IPACMDBG_H("IPA_IOCTL_PUT_RT_TBL ioctl issued to IPA routing block.\n");
	return true;
}

bool IPACM_Routing::DeleteRoutingHdl(uint32_t rt_rule_hdl, ipa_ip_type ip)
{
	const uint8_t NUM_RULES = 1;
	struct ipa_ioc_del_rt_rule *rt_rule;
	struct ipa_rt_rule_del *rt_rule_entry;
	bool res = true;
	int len = 0;

	if (rt_rule_hdl == 0)
	{
		IPACMERR(" No route handle passed. Ignoring it\n");
		return res;
	}

	len = (sizeof(struct ipa_ioc_del_rt_rule)) + (NUM_RULES * sizeof(struct ipa_rt_rule_del));
	rt_rule = (struct ipa_ioc_del_rt_rule *)malloc(len);
	if (rt_rule == NULL)
	{
		IPACMERR("unable to allocate memory for del route rule\n");
		return false;
	}

	memset(rt_rule, 0, len);
	rt_rule->commit = 1;
	rt_rule->num_hdls = NUM_RULES;
	rt_rule->ip = ip;

	rt_rule_entry = &rt_rule->hdl[0];
	rt_rule_entry->status = -1;
	rt_rule_entry->hdl = rt_rule_hdl;

	IPACMDBG_H("Deleting Route hdl:(0x%x) with ip type: %d\n", rt_rule_entry->hdl, ip);
	if ((false == DeleteRoutingRule(rt_rule)) ||
			(rt_rule_entry->status))
	{
		PERROR("Routing rule deletion failed!\n");
		goto fail;
		res = false;
	}

fail:
	free(rt_rule);

	return res;
}

bool IPACM_Routing::ModifyRoutingRule(struct ipa_ioc_mdfy_rt_rule *mdfyRules)
{
	int retval = 0, cnt;

	if (!DeviceNodeIsOpened())
	{
		IPACMERR("Device is not opened\n");
		return false;
	}

	retval = ioctl(m_fd, IPA_IOC_MDFY_RT_RULE, mdfyRules);
	if (retval)
	{
		IPACMERR("Failed modifying routing rules %p\n", mdfyRules);
		return false;
	}

	for(cnt=0; cnt<mdfyRules->num_rules; cnt++)
	{
		if(mdfyRules->rules[cnt].status != 0)
		{
			IPACMERR("Unable to modify rule: %d\n", cnt);
		}
	}

	IPACMDBG_H("Modified routing rules %p\n", mdfyRules);
	return true;
}