Merge "core: Add API to retrieve mtu size" into jellybean (22d8f165) · Commits · e / os / android_system_core

include/netutils/ifc.h

+4 −1

Original line number	Diff line number	Diff line
		/*
		* Copyright 2008, The Android Open Source Project
		* Copyright (C) 2011, Code Aurora Forum. All rights reserved.
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		@@ -61,10 +62,12 @@ extern int ifc_remove_route(const char ifname, const char dst,
		int prefix_length, const char *gw);
		extern int ifc_get_info(const char name, in_addr_t addr, int *prefixLength,
		unsigned *flags);

		extern int ifc_configure(const char *ifname, in_addr_t address,
		uint32_t prefixLength, in_addr_t gateway,
		in_addr_t dns1, in_addr_t dns2);
		extern int ifc_get_mtu(const char name, int mtuSz);
		extern in_addr_t prefixLengthToIpv4Netmask(int prefix_length);
		extern int ipv4NetmaskToPrefixLength(in_addr_t mask);

		__END_DECLS

+19 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright 2008, The Android Open Source Project
		* Copyright (C) 2011, Code Aurora Forum. All rights reserved.
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		@@ -981,3 +982,21 @@ int ifc_remove_route(const char ifname, const chardst, int prefix_length, cons
		{
		return ifc_act_on_route(SIOCDELRT, ifname, dst, prefix_length, gw);
		}

		int ifc_get_mtu(const char name, int mtuSz)
		{
		struct ifreq ifr;
		ifc_init_ifr(name, &ifr);

		if (mtuSz != NULL) {
		if(ioctl(ifc_ctl_sock, SIOCGIFMTU, &ifr) < 0) {
		*mtuSz = 0;
		return -2;
		} else {
		*mtuSz = ifr.ifr_mtu;
		return 0;
		}
		}

		return -1;
		}