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[ip6-address] use larger data fields when checking against constants (#4519)

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This commit changes methods in `Ip6::Address` class to use larger
fields (`m16` or `m32`) for comparing portions of address sequence
against constant values when possible.
This commit is contained in:
Abtin Keshavarzian
2020-02-03 09:11:35 -08:00
committed by Jonathan Hui
parent cd0ef26c02
commit 16b6c8df89
1 changed files with 5 additions and 6 deletions
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src/core/net/ip6_address.cpp
+5 -6
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@@ -62,7 +62,7 @@ bool Address::IsLoopback(void) const
bool Address::IsLinkLocal(void) const
{
return (mFields.m8[0] == 0xfe) && ((mFields.m8[1] & 0xc0) == 0x80);
return (mFields.m16[0] & HostSwap16(0xffc0)) == HostSwap16(0xfe80);
}
bool Address::IsMulticast(void) const
@@ -117,15 +117,14 @@ bool Address::IsRealmLocalAllMplForwarders(void) const
bool Address::IsRoutingLocator(void) const
{
return (mFields.m16[4] == HostSwap16(0x0000) && mFields.m16[5] == HostSwap16(0x00ff) &&
mFields.m16[6] == HostSwap16(0xfe00) && mFields.m8[14] < kAloc16Mask &&
(mFields.m8[14] & kRloc16ReservedBitMask) == 0);
return (mFields.m32[2] == HostSwap32(0x000000ff) && mFields.m16[6] == HostSwap16(0xfe00) &&
mFields.m8[14] < kAloc16Mask && (mFields.m8[14] & kRloc16ReservedBitMask) == 0);
}
bool Address::IsAnycastRoutingLocator(void) const
{
return (mFields.m16[4] == HostSwap16(0x0000) && mFields.m16[5] == HostSwap16(0x00ff) &&
mFields.m16[6] == HostSwap16(0xfe00) && mFields.m8[14] == kAloc16Mask);
return (mFields.m32[2] == HostSwap32(0x000000ff) && mFields.m16[6] == HostSwap16(0xfe00) &&
mFields.m8[14] == kAloc16Mask);
}
bool Address::IsAnycastServiceLocator(void) const