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Some micro-optimizations, including a memcpy that is faster than Linux for most distro/compiler versions.

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This commit is contained in:
Adam Ierymenko 2017-12-15 11:03:20 -08:00
parent cb8e7b4d5e
commit 0608704626
22 changed files with 163 additions and 81 deletions
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8
controller/EmbeddedNetworkController.cpp
View File

@ -333,14 +333,14 @@ static bool _parseRule(json &r,ZT_VirtualNetworkRule &rule)
} else if (t == "MATCH_IPV6_SOURCE") {
rule.t |= ZT_NETWORK_RULE_MATCH_IPV6_SOURCE;
InetAddress ip(OSUtils::jsonString(r["ip"],"::0").c_str());
memcpy(rule.v.ipv6.ip,reinterpret_cast<struct sockaddr_in6 *>(&ip)->sin6_addr.s6_addr,16);
ZT_FAST_MEMCPY(rule.v.ipv6.ip,reinterpret_cast<struct sockaddr_in6 *>(&ip)->sin6_addr.s6_addr,16);
rule.v.ipv6.mask = Utils::ntoh(reinterpret_cast<struct sockaddr_in6 *>(&ip)->sin6_port) & 0xff;
if (rule.v.ipv6.mask > 128) rule.v.ipv6.mask = 128;
return true;
} else if (t == "MATCH_IPV6_DEST") {
rule.t |= ZT_NETWORK_RULE_MATCH_IPV6_DEST;
InetAddress ip(OSUtils::jsonString(r["ip"],"::0").c_str());
memcpy(rule.v.ipv6.ip,reinterpret_cast<struct sockaddr_in6 *>(&ip)->sin6_addr.s6_addr,16);
ZT_FAST_MEMCPY(rule.v.ipv6.ip,reinterpret_cast<struct sockaddr_in6 *>(&ip)->sin6_addr.s6_addr,16);
rule.v.ipv6.mask = Utils::ntoh(reinterpret_cast<struct sockaddr_in6 *>(&ip)->sin6_port) & 0xff;
if (rule.v.ipv6.mask > 128) rule.v.ipv6.mask = 128;
return true;
@ -1520,8 +1520,8 @@ void EmbeddedNetworkController::_request(
InetAddress ipRangeEnd(OSUtils::jsonString(pool["ipRangeEnd"],"").c_str());
if ( (ipRangeStart.ss_family == AF_INET6) && (ipRangeEnd.ss_family == AF_INET6) ) {
uint64_t s[2],e[2],x[2],xx[2];
memcpy(s,ipRangeStart.rawIpData(),16);
memcpy(e,ipRangeEnd.rawIpData(),16);
ZT_FAST_MEMCPY(s,ipRangeStart.rawIpData(),16);
ZT_FAST_MEMCPY(e,ipRangeEnd.rawIpData(),16);
s[0] = Utils::ntoh(s[0]);
s[1] = Utils::ntoh(s[1]);
e[0] = Utils::ntoh(e[0]);

6
make-linux.mk
View File

@ -66,9 +66,9 @@ ifeq ($(ZT_DEBUG),1)
node/Salsa20.o node/SHA512.o node/C25519.o node/Poly1305.o: CXXFLAGS=-Wall -O2 -g -pthread $(INCLUDES) $(DEFS)
else
override DEFS+=-D_FORTIFY_SOURCE=2
CFLAGS?=-Os -fstack-protector
CFLAGS?=-O3 -fstack-protector
override CFLAGS+=-Wall -Wno-deprecated -fPIE -pthread $(INCLUDES) -DNDEBUG $(DEFS)
CXXFLAGS?=-Os -fstack-protector
CXXFLAGS?=-O3 -fstack-protector
override CXXFLAGS+=-Wall -Wno-deprecated -Wno-unused-result -Wreorder -fPIE -std=c++11 -pthread $(INCLUDES) -DNDEBUG $(DEFS)
override LDFLAGS+=-pie -Wl,-z,relro,-z,now
STRIP?=strip
@ -241,7 +241,7 @@ zerotier-idtool: one
zerotier-cli: one
libzerotiercore.a: FORCE
make CFLAGS="-Os -fstack-protector -fPIC" CXXFLAGS="-Os -std=c++11 -fstack-protector -fPIC" $(CORE_OBJS)
make CFLAGS="-O3 -fstack-protector -fPIC" CXXFLAGS="-O3 -std=c++11 -fstack-protector -fPIC" $(CORE_OBJS)
ar rcs libzerotiercore.a $(CORE_OBJS)
ranlib libzerotiercore.a

8
node/Buffer.hpp
View File

@ -116,9 +116,9 @@ public:
if (unlikely(b._l > C))
throw ZT_EXCEPTION_OUT_OF_BOUNDS;
if (C2 == C) {
memcpy(this,&b,sizeof(Buffer<C>));
ZT_FAST_MEMCPY(this,&b,sizeof(Buffer<C>));
} else {
memcpy(_b,b._b,_l = b._l);
ZT_FAST_MEMCPY(_b,b._b,_l = b._l);
}
return *this;
}
@ -127,7 +127,7 @@ public:
{
if (unlikely(l > C))
throw ZT_EXCEPTION_OUT_OF_BOUNDS;
memcpy(_b,b,l);
ZT_FAST_MEMCPY(_b,b,l);
_l = l;
}
@ -281,7 +281,7 @@ public:
{
if (unlikely((_l + l) > C))
throw ZT_EXCEPTION_OUT_OF_BOUNDS;
memcpy(_b + _l,b,l);
ZT_FAST_MEMCPY(_b + _l,b,l);
_l += l;
}

10
node/Capability.hpp
View File

@ -94,7 +94,7 @@ public:
_maxCustodyChainLength = (mccl > 0) ? ((mccl < ZT_MAX_CAPABILITY_CUSTODY_CHAIN_LENGTH) ? mccl : (unsigned int)ZT_MAX_CAPABILITY_CUSTODY_CHAIN_LENGTH) : 1;
_ruleCount = (ruleCount < ZT_MAX_CAPABILITY_RULES) ? ruleCount : ZT_MAX_CAPABILITY_RULES;
if (_ruleCount)
memcpy(_rules,rules,sizeof(ZT_VirtualNetworkRule) * _ruleCount);
ZT_FAST_MEMCPY(_rules,rules,sizeof(ZT_VirtualNetworkRule) * _ruleCount);
}
/**
@ -320,16 +320,16 @@ public:
break;
case ZT_NETWORK_RULE_MATCH_MAC_SOURCE:
case ZT_NETWORK_RULE_MATCH_MAC_DEST:
memcpy(rules[ruleCount].v.mac,b.field(p,6),6);
ZT_FAST_MEMCPY(rules[ruleCount].v.mac,b.field(p,6),6);
break;
case ZT_NETWORK_RULE_MATCH_IPV4_SOURCE:
case ZT_NETWORK_RULE_MATCH_IPV4_DEST:
memcpy(&(rules[ruleCount].v.ipv4.ip),b.field(p,4),4);
ZT_FAST_MEMCPY(&(rules[ruleCount].v.ipv4.ip),b.field(p,4),4);
rules[ruleCount].v.ipv4.mask = (uint8_t)b[p + 4];
break;
case ZT_NETWORK_RULE_MATCH_IPV6_SOURCE:
case ZT_NETWORK_RULE_MATCH_IPV6_DEST:
memcpy(rules[ruleCount].v.ipv6.ip,b.field(p,16),16);
ZT_FAST_MEMCPY(rules[ruleCount].v.ipv6.ip,b.field(p,16),16);
rules[ruleCount].v.ipv6.mask = (uint8_t)b[p + 16];
break;
case ZT_NETWORK_RULE_MATCH_IP_TOS:
@ -452,7 +452,7 @@ public:
if (b.template at<uint16_t>(p) != ZT_C25519_SIGNATURE_LEN)
throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_INVALID_CRYPTOGRAPHIC_TOKEN;
p += 2;
memcpy(_custody[i].signature.data,b.field(p,ZT_C25519_SIGNATURE_LEN),ZT_C25519_SIGNATURE_LEN); p += ZT_C25519_SIGNATURE_LEN;
ZT_FAST_MEMCPY(_custody[i].signature.data,b.field(p,ZT_C25519_SIGNATURE_LEN),ZT_C25519_SIGNATURE_LEN); p += ZT_C25519_SIGNATURE_LEN;
} else {
p += 2 + b.template at<uint16_t>(p);
}

6
node/CertificateOfMembership.hpp
View File

@ -119,7 +119,7 @@ public:
CertificateOfMembership(const CertificateOfMembership &c)
{
memcpy(this,&c,sizeof(CertificateOfMembership));
ZT_FAST_MEMCPY(this,&c,sizeof(CertificateOfMembership));
}
/**
@ -147,7 +147,7 @@ public:
inline CertificateOfMembership &operator=(const CertificateOfMembership &c)
{
memcpy(this,&c,sizeof(CertificateOfMembership));
ZT_FAST_MEMCPY(this,&c,sizeof(CertificateOfMembership));
return *this;
}
@ -329,7 +329,7 @@ public:
p += ZT_ADDRESS_LENGTH;
if (_signedBy) {
memcpy(_signature.data,b.field(p,(unsigned int)_signature.size()),_signature.size());
ZT_FAST_MEMCPY(_signature.data,b.field(p,(unsigned int)_signature.size()),_signature.size());
p += (unsigned int)_signature.size();
}

8
node/CertificateOfOwnership.hpp
View File

@ -115,11 +115,11 @@ public:
if (_thingCount >= ZT_CERTIFICATEOFOWNERSHIP_MAX_THINGS) return;
if (ip.ss_family == AF_INET) {
_thingTypes[_thingCount] = THING_IPV4_ADDRESS;
memcpy(_thingValues[_thingCount],&(reinterpret_cast<const struct sockaddr_in *>(&ip)->sin_addr.s_addr),4);
ZT_FAST_MEMCPY(_thingValues[_thingCount],&(reinterpret_cast<const struct sockaddr_in *>(&ip)->sin_addr.s_addr),4);
++_thingCount;
} else if (ip.ss_family == AF_INET6) {
_thingTypes[_thingCount] = THING_IPV6_ADDRESS;
memcpy(_thingValues[_thingCount],reinterpret_cast<const struct sockaddr_in6 *>(&ip)->sin6_addr.s6_addr,16);
ZT_FAST_MEMCPY(_thingValues[_thingCount],reinterpret_cast<const struct sockaddr_in6 *>(&ip)->sin6_addr.s6_addr,16);
++_thingCount;
}
}
@ -198,7 +198,7 @@ public:
for(unsigned int i=0,j=_thingCount;i<j;++i) {
if (i < ZT_CERTIFICATEOFOWNERSHIP_MAX_THINGS) {
_thingTypes[i] = (uint8_t)b[p++];
memcpy(_thingValues[i],b.field(p,ZT_CERTIFICATEOFOWNERSHIP_MAX_THING_VALUE_SIZE),ZT_CERTIFICATEOFOWNERSHIP_MAX_THING_VALUE_SIZE);
ZT_FAST_MEMCPY(_thingValues[i],b.field(p,ZT_CERTIFICATEOFOWNERSHIP_MAX_THING_VALUE_SIZE),ZT_CERTIFICATEOFOWNERSHIP_MAX_THING_VALUE_SIZE);
p += ZT_CERTIFICATEOFOWNERSHIP_MAX_THING_VALUE_SIZE;
}
}
@ -209,7 +209,7 @@ public:
if (b.template at<uint16_t>(p) != ZT_C25519_SIGNATURE_LEN)
throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_INVALID_CRYPTOGRAPHIC_TOKEN;
p += 2;
memcpy(_signature.data,b.field(p,ZT_C25519_SIGNATURE_LEN),ZT_C25519_SIGNATURE_LEN); p += ZT_C25519_SIGNATURE_LEN;
ZT_FAST_MEMCPY(_signature.data,b.field(p,ZT_C25519_SIGNATURE_LEN),ZT_C25519_SIGNATURE_LEN); p += ZT_C25519_SIGNATURE_LEN;
} else {
p += 2 + b.template at<uint16_t>(p);
}

2
node/Dictionary.hpp
View File

@ -81,7 +81,7 @@ public:
if (s) {
if (len > (C-1))
len = C-1;
memcpy(_d,s,len);
ZT_FAST_MEMCPY(_d,s,len);
_d[len] = (char)0;
} else {
_d[0] = (char)0;

4
node/Identity.hpp
View File

@ -249,7 +249,7 @@ public:
if (b[p++] != 0)
throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_INVALID_TYPE;
memcpy(_publicKey.data,b.field(p,(unsigned int)_publicKey.size()),(unsigned int)_publicKey.size());
ZT_FAST_MEMCPY(_publicKey.data,b.field(p,(unsigned int)_publicKey.size()),(unsigned int)_publicKey.size());
p += (unsigned int)_publicKey.size();
unsigned int privateKeyLength = (unsigned int)b[p++];
@ -257,7 +257,7 @@ public:
if (privateKeyLength != ZT_C25519_PRIVATE_KEY_LEN)
throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_INVALID_CRYPTOGRAPHIC_TOKEN;
_privateKey = new C25519::Private();
memcpy(_privateKey->data,b.field(p,ZT_C25519_PRIVATE_KEY_LEN),ZT_C25519_PRIVATE_KEY_LEN);
ZT_FAST_MEMCPY(_privateKey->data,b.field(p,ZT_C25519_PRIVATE_KEY_LEN),ZT_C25519_PRIVATE_KEY_LEN);
p += ZT_C25519_PRIVATE_KEY_LEN;
}

16
node/InetAddress.cpp
View File

@ -115,13 +115,13 @@ void InetAddress::set(const void *ipBytes,unsigned int ipLen,unsigned int port)
memset(this,0,sizeof(InetAddress));
if (ipLen == 4) {
uint32_t ipb[1];
memcpy(ipb,ipBytes,4);
ZT_FAST_MEMCPY(ipb,ipBytes,4);
ss_family = AF_INET;
reinterpret_cast<struct sockaddr_in *>(this)->sin_addr.s_addr = ipb[0];
reinterpret_cast<struct sockaddr_in *>(this)->sin_port = Utils::hton((uint16_t)port);
} else if (ipLen == 16) {
ss_family = AF_INET6;
memcpy(reinterpret_cast<struct sockaddr_in6 *>(this)->sin6_addr.s6_addr,ipBytes,16);
ZT_FAST_MEMCPY(reinterpret_cast<struct sockaddr_in6 *>(this)->sin6_addr.s6_addr,ipBytes,16);
reinterpret_cast<struct sockaddr_in6 *>(this)->sin6_port = Utils::hton((uint16_t)port);
}
}
@ -154,7 +154,7 @@ char *InetAddress::toIpString(char buf[64]) const
case AF_INET6: {
uint16_t a[8];
memcpy(a,reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr,16);
ZT_FAST_MEMCPY(a,reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr,16);
char *p = buf;
for(int i=0;i<8;++i) {
Utils::hex(Utils::ntoh(a[i]),p);
@ -199,7 +199,7 @@ bool InetAddress::fromString(const char *ipSlashPort)
struct sockaddr_in6 *const in6 = reinterpret_cast<struct sockaddr_in6 *>(this);
in6->sin6_family = AF_INET6;
memcpy(in6->sin6_addr.s6_addr,a,16);
ZT_FAST_MEMCPY(in6->sin6_addr.s6_addr,a,16);
in6->sin6_port = Utils::hton((uint16_t)port);
return true;
@ -212,7 +212,7 @@ bool InetAddress::fromString(const char *ipSlashPort)
struct sockaddr_in *const in = reinterpret_cast<struct sockaddr_in *>(this);
in->sin_family = AF_INET;
memcpy(&(in->sin_addr.s_addr),a,4);
ZT_FAST_MEMCPY(&(in->sin_addr.s_addr),a,4);
in->sin_port = Utils::hton((uint16_t)port);
return true;
@ -238,7 +238,7 @@ InetAddress InetAddress::netmask() const
nm[0] = 0;
nm[1] = 0;
}
memcpy(reinterpret_cast<struct sockaddr_in6 *>(&r)->sin6_addr.s6_addr,nm,16);
ZT_FAST_MEMCPY(reinterpret_cast<struct sockaddr_in6 *>(&r)->sin6_addr.s6_addr,nm,16);
} break;
}
return r;
@ -264,10 +264,10 @@ InetAddress InetAddress::network() const
case AF_INET6: {
uint64_t nm[2];
const unsigned int bits = netmaskBits();
memcpy(nm,reinterpret_cast<struct sockaddr_in6 *>(&r)->sin6_addr.s6_addr,16);
ZT_FAST_MEMCPY(nm,reinterpret_cast<struct sockaddr_in6 *>(&r)->sin6_addr.s6_addr,16);
nm[0] &= Utils::hton((uint64_t)((bits >= 64) ? 0xffffffffffffffffULL : (0xffffffffffffffffULL << (64 - bits))));
nm[1] &= Utils::hton((uint64_t)((bits <= 64) ? 0ULL : (0xffffffffffffffffULL << (128 - bits))));
memcpy(reinterpret_cast<struct sockaddr_in6 *>(&r)->sin6_addr.s6_addr,nm,16);
ZT_FAST_MEMCPY(reinterpret_cast<struct sockaddr_in6 *>(&r)->sin6_addr.s6_addr,nm,16);
} break;
}
return r;

34
node/InetAddress.hpp
View File

@ -91,8 +91,8 @@ struct InetAddress : public sockaddr_storage
};
InetAddress() { memset(this,0,sizeof(InetAddress)); }
InetAddress(const InetAddress &a) { memcpy(this,&a,sizeof(InetAddress)); }
InetAddress(const InetAddress *a) { memcpy(this,a,sizeof(InetAddress)); }
InetAddress(const InetAddress &a) { ZT_FAST_MEMCPY(this,&a,sizeof(InetAddress)); }
InetAddress(const InetAddress *a) { ZT_FAST_MEMCPY(this,a,sizeof(InetAddress)); }
InetAddress(const struct sockaddr_storage &ss) { *this = ss; }
InetAddress(const struct sockaddr_storage *ss) { *this = ss; }
InetAddress(const struct sockaddr &sa) { *this = sa; }
@ -108,28 +108,28 @@ struct InetAddress : public sockaddr_storage
inline InetAddress &operator=(const InetAddress &a)
{
if (&a != this)
memcpy(this,&a,sizeof(InetAddress));
ZT_FAST_MEMCPY(this,&a,sizeof(InetAddress));
return *this;
}
inline InetAddress &operator=(const InetAddress *a)
{
if (a != this)
memcpy(this,a,sizeof(InetAddress));
ZT_FAST_MEMCPY(this,a,sizeof(InetAddress));
return *this;
}
inline InetAddress &operator=(const struct sockaddr_storage &ss)
{
if (reinterpret_cast<const InetAddress *>(&ss) != this)
memcpy(this,&ss,sizeof(InetAddress));
ZT_FAST_MEMCPY(this,&ss,sizeof(InetAddress));
return *this;
}
inline InetAddress &operator=(const struct sockaddr_storage *ss)
{
if (reinterpret_cast<const InetAddress *>(ss) != this)
memcpy(this,ss,sizeof(InetAddress));
ZT_FAST_MEMCPY(this,ss,sizeof(InetAddress));
return *this;
}
@ -137,7 +137,7 @@ struct InetAddress : public sockaddr_storage
{
if (reinterpret_cast<const InetAddress *>(&sa) != this) {
memset(this,0,sizeof(InetAddress));
memcpy(this,&sa,sizeof(struct sockaddr_in));
ZT_FAST_MEMCPY(this,&sa,sizeof(struct sockaddr_in));
}
return *this;
}
@ -146,7 +146,7 @@ struct InetAddress : public sockaddr_storage
{
if (reinterpret_cast<const InetAddress *>(sa) != this) {
memset(this,0,sizeof(InetAddress));
memcpy(this,sa,sizeof(struct sockaddr_in));
ZT_FAST_MEMCPY(this,sa,sizeof(struct sockaddr_in));
}
return *this;
}
@ -155,7 +155,7 @@ struct InetAddress : public sockaddr_storage
{
if (reinterpret_cast<const InetAddress *>(&sa) != this) {
memset(this,0,sizeof(InetAddress));
memcpy(this,&sa,sizeof(struct sockaddr_in6));
ZT_FAST_MEMCPY(this,&sa,sizeof(struct sockaddr_in6));
}
return *this;
}
@ -164,7 +164,7 @@ struct InetAddress : public sockaddr_storage
{
if (reinterpret_cast<const InetAddress *>(sa) != this) {
memset(this,0,sizeof(InetAddress));
memcpy(this,sa,sizeof(struct sockaddr_in6));
ZT_FAST_MEMCPY(this,sa,sizeof(struct sockaddr_in6));
}
return *this;
}
@ -175,10 +175,10 @@ struct InetAddress : public sockaddr_storage
memset(this,0,sizeof(InetAddress));
switch(sa.sa_family) {
case AF_INET:
memcpy(this,&sa,sizeof(struct sockaddr_in));
ZT_FAST_MEMCPY(this,&sa,sizeof(struct sockaddr_in));
break;
case AF_INET6:
memcpy(this,&sa,sizeof(struct sockaddr_in6));
ZT_FAST_MEMCPY(this,&sa,sizeof(struct sockaddr_in6));
break;
}
}
@ -191,10 +191,10 @@ struct InetAddress : public sockaddr_storage
memset(this,0,sizeof(InetAddress));
switch(sa->sa_family) {
case AF_INET:
memcpy(this,sa,sizeof(struct sockaddr_in));
ZT_FAST_MEMCPY(this,sa,sizeof(struct sockaddr_in));
break;
case AF_INET6:
memcpy(this,sa,sizeof(struct sockaddr_in6));
ZT_FAST_MEMCPY(this,sa,sizeof(struct sockaddr_in6));
break;
}
}
@ -388,7 +388,7 @@ struct InetAddress : public sockaddr_storage
break;
case AF_INET6:
r.ss_family = AF_INET6;
memcpy(reinterpret_cast<struct sockaddr_in6 *>(&r)->sin6_addr.s6_addr,reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr,16);
ZT_FAST_MEMCPY(reinterpret_cast<struct sockaddr_in6 *>(&r)->sin6_addr.s6_addr,reinterpret_cast<const struct sockaddr_in6 *>(this)->sin6_addr.s6_addr,16);
break;
}
return r;
@ -537,12 +537,12 @@ struct InetAddress : public sockaddr_storage
return (unsigned int)(b.template at<uint16_t>(p) + 3); // other addresses begin with 16-bit non-inclusive length
case 0x04:
ss_family = AF_INET;
memcpy(&(reinterpret_cast<struct sockaddr_in *>(this)->sin_addr.s_addr),b.field(p,4),4); p += 4;
ZT_FAST_MEMCPY(&(reinterpret_cast<struct sockaddr_in *>(this)->sin_addr.s_addr),b.field(p,4),4); p += 4;
reinterpret_cast<struct sockaddr_in *>(this)->sin_port = Utils::hton(b.template at<uint16_t>(p)); p += 2;
break;
case 0x06:
ss_family = AF_INET6;
memcpy(reinterpret_cast<struct sockaddr_in6 *>(this)->sin6_addr.s6_addr,b.field(p,16),16); p += 16;
ZT_FAST_MEMCPY(reinterpret_cast<struct sockaddr_in6 *>(this)->sin6_addr.s6_addr,b.field(p,16),16); p += 16;
reinterpret_cast<struct sockaddr_in *>(this)->sin_port = Utils::hton(b.template at<uint16_t>(p)); p += 2;
break;
default:

6
node/Network.cpp
View File

@ -983,7 +983,7 @@ uint64_t Network::handleConfigChunk(void *tPtr,const uint64_t packetId,const Add
return false;
c->haveChunkIds[c->haveChunks++] = chunkId;
memcpy(c->data.unsafeData() + chunkIndex,chunkData,chunkLen);
ZT_FAST_MEMCPY(c->data.unsafeData() + chunkIndex,chunkData,chunkLen);
c->haveBytes += chunkLen;
if (c->haveBytes == totalLength) {
@ -1385,7 +1385,7 @@ void Network::_externalConfig(ZT_VirtualNetworkConfig *ec) const
ec->assignedAddressCount = 0;
for(unsigned int i=0;i<ZT_MAX_ZT_ASSIGNED_ADDRESSES;++i) {
if (i < _config.staticIpCount) {
memcpy(&(ec->assignedAddresses[i]),&(_config.staticIps[i]),sizeof(struct sockaddr_storage));
ZT_FAST_MEMCPY(&(ec->assignedAddresses[i]),&(_config.staticIps[i]),sizeof(struct sockaddr_storage));
++ec->assignedAddressCount;
} else {
memset(&(ec->assignedAddresses[i]),0,sizeof(struct sockaddr_storage));
@ -1395,7 +1395,7 @@ void Network::_externalConfig(ZT_VirtualNetworkConfig *ec) const
ec->routeCount = 0;
for(unsigned int i=0;i<ZT_MAX_NETWORK_ROUTES;++i) {
if (i < _config.routeCount) {
memcpy(&(ec->routes[i]),&(_config.routes[i]),sizeof(ZT_VirtualNetworkRoute));
ZT_FAST_MEMCPY(&(ec->routes[i]),&(_config.routes[i]),sizeof(ZT_VirtualNetworkRoute));
++ec->routeCount;
} else {
memset(&(ec->routes[i]),0,sizeof(ZT_VirtualNetworkRoute));

4
node/NetworkConfig.hpp
View File

@ -234,12 +234,12 @@ public:
NetworkConfig(const NetworkConfig &nc)
{
memcpy(this,&nc,sizeof(NetworkConfig));
ZT_FAST_MEMCPY(this,&nc,sizeof(NetworkConfig));
}
inline NetworkConfig &operator=(const NetworkConfig &nc)
{
memcpy(this,&nc,sizeof(NetworkConfig));
ZT_FAST_MEMCPY(this,&nc,sizeof(NetworkConfig));
return *this;
}

4
node/Node.cpp
View File

@ -66,7 +66,7 @@ Node::Node(void *uptr,void *tptr,const struct ZT_Node_Callbacks *callbacks,int64
{
if (callbacks->version != 0)
throw ZT_EXCEPTION_INVALID_ARGUMENT;
memcpy(&_cb,callbacks,sizeof(ZT_Node_Callbacks));
ZT_FAST_MEMCPY(&_cb,callbacks,sizeof(ZT_Node_Callbacks));
// Initialize non-cryptographic PRNG from a good random source
Utils::getSecureRandom((void *)_prngState,sizeof(_prngState));
@ -441,7 +441,7 @@ ZT_PeerList *Node::peers() const
SharedPtr<Path> bestp(pi->second->getBestPath(_now,false));
p->pathCount = 0;
for(std::vector< SharedPtr<Path> >::iterator path(paths.begin());path!=paths.end();++path) {
memcpy(&(p->paths[p->pathCount].address),&((*path)->address()),sizeof(struct sockaddr_storage));
ZT_FAST_MEMCPY(&(p->paths[p->pathCount].address),&((*path)->address()),sizeof(struct sockaddr_storage));
p->paths[p->pathCount].lastSend = (*path)->lastOut();
p->paths[p->pathCount].lastReceive = (*path)->lastIn();
p->paths[p->pathCount].trustedPathId = RR->topology->getOutboundPathTrust((*path)->address());

2
node/OutboundMulticast.cpp
View File

@ -78,7 +78,7 @@ void OutboundMulticast::init(
if (!disableCompression)
_packet.compress();
memcpy(_frameData,payload,_frameLen);
ZT_FAST_MEMCPY(_frameData,payload,_frameLen);
}
void OutboundMulticast::sendOnly(const RuntimeEnvironment *RR,void *tPtr,const Address &toAddr)

28
node/Packet.cpp
View File

@ -387,27 +387,27 @@ static void LZ4_write32(void* memPtr, U32 value) { ((unalign*)memPtr)->u32 = val
static inline U16 LZ4_read16(const void* memPtr)
{
U16 val; memcpy(&val, memPtr, sizeof(val)); return val;
U16 val; ZT_FAST_MEMCPY(&val, memPtr, sizeof(val)); return val;
}
static inline U32 LZ4_read32(const void* memPtr)
{
U32 val; memcpy(&val, memPtr, sizeof(val)); return val;
U32 val; ZT_FAST_MEMCPY(&val, memPtr, sizeof(val)); return val;
}
static inline reg_t LZ4_read_ARCH(const void* memPtr)
{
reg_t val; memcpy(&val, memPtr, sizeof(val)); return val;
reg_t val; ZT_FAST_MEMCPY(&val, memPtr, sizeof(val)); return val;
}
static inline void LZ4_write16(void* memPtr, U16 value)
{
memcpy(memPtr, &value, sizeof(value));
ZT_FAST_MEMCPY(memPtr, &value, sizeof(value));
}
static inline void LZ4_write32(void* memPtr, U32 value)
{
memcpy(memPtr, &value, sizeof(value));
ZT_FAST_MEMCPY(memPtr, &value, sizeof(value));
}
#endif /* LZ4_FORCE_MEMORY_ACCESS */
@ -435,7 +435,7 @@ static inline void LZ4_writeLE16(void* memPtr, U16 value)
static inline void LZ4_copy8(void* dst, const void* src)
{
memcpy(dst,src,8);
ZT_FAST_MEMCPY(dst,src,8);
}
/* customized variant of memcpy, which can overwrite up to 8 bytes beyond dstEnd */
@ -830,7 +830,7 @@ _last_literals:
} else {
*op++ = (BYTE)(lastRun<<ML_BITS);
}
memcpy(op, anchor, lastRun);
ZT_FAST_MEMCPY(op, anchor, lastRun);
op += lastRun;
}
@ -956,7 +956,7 @@ FORCE_INLINE int LZ4_decompress_generic(
if ((!endOnInput) && (cpy != oend)) goto _output_error; /* Error : block decoding must stop exactly there */
if ((endOnInput) && ((ip+length != iend) || (cpy > oend))) goto _output_error; /* Error : input must be consumed */
}
memcpy(op, ip, length);
ZT_FAST_MEMCPY(op, ip, length);
ip += length;
op += length;
break; /* Necessarily EOF, due to parsing restrictions */
@ -995,14 +995,14 @@ FORCE_INLINE int LZ4_decompress_generic(
/* match encompass external dictionary and current block */
size_t const copySize = (size_t)(lowPrefix-match);
size_t const restSize = length - copySize;
memcpy(op, dictEnd - copySize, copySize);
ZT_FAST_MEMCPY(op, dictEnd - copySize, copySize);
op += copySize;
if (restSize > (size_t)(op-lowPrefix)) { /* overlap copy */
BYTE* const endOfMatch = op + restSize;
const BYTE* copyFrom = lowPrefix;
while (op < endOfMatch) *op++ = *copyFrom++;
} else {
memcpy(op, lowPrefix, restSize);
ZT_FAST_MEMCPY(op, lowPrefix, restSize);
op += restSize;
} }
continue;
@ -1017,7 +1017,7 @@ FORCE_INLINE int LZ4_decompress_generic(
op[2] = match[2];
op[3] = match[3];
match += dec32table[offset];
memcpy(op+4, match, 4);
ZT_FAST_MEMCPY(op+4, match, 4);
match -= dec64;
} else { LZ4_copy8(op, match); match+=8; }
op += 8;
@ -1095,7 +1095,7 @@ void Packet::armor(const void *key,bool encryptPayload,unsigned int counter)
s20.crypt12(payload,payload,payloadLen);
uint64_t mac[2];
Poly1305::compute(mac,payload,payloadLen,macKey);
memcpy(data + ZT_PACKET_IDX_MAC,mac,8);
ZT_FAST_MEMCPY(data + ZT_PACKET_IDX_MAC,mac,8);
}
}
@ -1167,7 +1167,7 @@ bool Packet::compress()
if ((cl > 0)&&(cl < pl)) {
data[ZT_PACKET_IDX_VERB] |= (char)ZT_PROTO_VERB_FLAG_COMPRESSED;
setSize((unsigned int)cl + ZT_PACKET_IDX_PAYLOAD);
memcpy(data + ZT_PACKET_IDX_PAYLOAD,buf,cl);
ZT_FAST_MEMCPY(data + ZT_PACKET_IDX_PAYLOAD,buf,cl);
return true;
}
}
@ -1187,7 +1187,7 @@ bool Packet::uncompress()
int ucl = LZ4_decompress_safe((const char *)data + ZT_PACKET_IDX_PAYLOAD,buf,compLen,sizeof(buf));
if ((ucl > 0)&&(ucl <= (int)(capacity() - ZT_PACKET_IDX_PAYLOAD))) {
setSize((unsigned int)ucl + ZT_PACKET_IDX_PAYLOAD);
memcpy(data + ZT_PACKET_IDX_PAYLOAD,buf,ucl);
ZT_FAST_MEMCPY(data + ZT_PACKET_IDX_PAYLOAD,buf,ucl);
} else {
return false;
}

4
node/Path.hpp
View File

@ -73,10 +73,10 @@ public:
_k[1] = (uint64_t)reinterpret_cast<const struct sockaddr_in *>(&r)->sin_port;
_k[2] = (uint64_t)l;
} else if (r.ss_family == AF_INET6) {
memcpy(_k,reinterpret_cast<const struct sockaddr_in6 *>(&r)->sin6_addr.s6_addr,16);
ZT_FAST_MEMCPY(_k,reinterpret_cast<const struct sockaddr_in6 *>(&r)->sin6_addr.s6_addr,16);
_k[2] = ((uint64_t)reinterpret_cast<const struct sockaddr_in6 *>(&r)->sin6_port << 32) ^ (uint64_t)l;
} else {
memcpy(_k,&r,std::min(sizeof(_k),sizeof(InetAddress)));
ZT_FAST_MEMCPY(_k,&r,std::min(sizeof(_k),sizeof(InetAddress)));
_k[2] += (uint64_t)l;
}
}

2
node/Revocation.hpp
View File

@ -166,7 +166,7 @@ public:
if (b[p++] == 1) {
if (b.template at<uint16_t>(p) == ZT_C25519_SIGNATURE_LEN) {
p += 2;
memcpy(_signature.data,b.field(p,ZT_C25519_SIGNATURE_LEN),ZT_C25519_SIGNATURE_LEN);
ZT_FAST_MEMCPY(_signature.data,b.field(p,ZT_C25519_SIGNATURE_LEN),ZT_C25519_SIGNATURE_LEN);
p += ZT_C25519_SIGNATURE_LEN;
} else throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_INVALID_CRYPTOGRAPHIC_TOKEN;
} else {

2
node/Tag.hpp
View File

@ -163,7 +163,7 @@ public:
if (b.template at<uint16_t>(p) != ZT_C25519_SIGNATURE_LEN)
throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_INVALID_CRYPTOGRAPHIC_TOKEN;
p += 2;
memcpy(_signature.data,b.field(p,ZT_C25519_SIGNATURE_LEN),ZT_C25519_SIGNATURE_LEN); p += ZT_C25519_SIGNATURE_LEN;
ZT_FAST_MEMCPY(_signature.data,b.field(p,ZT_C25519_SIGNATURE_LEN),ZT_C25519_SIGNATURE_LEN); p += ZT_C25519_SIGNATURE_LEN;
} else {
p += 2 + b.template at<uint16_t>(p);
}

38
node/Utils.hpp
View File

@ -40,6 +40,44 @@
#include "Constants.hpp"
// So it's 2017 and this still helps on most Linux versions. It shouldn't but it does. Go figure.
#if defined(__LINUX__) && ((defined(_MSC_VER) || defined(__GNUC__)) && (defined(__amd64) || defined(__amd64__) || defined(__x86_64) || defined(__x86_64__) || defined(__AMD64) || defined(__AMD64__) || defined(_M_X64)))
#include <emmintrin.h>
static inline void ZT_FAST_MEMCPY(void *a,const void *b,unsigned long k)
{
char *aa = reinterpret_cast<char *>(a);
const char *bb = reinterpret_cast<const char *>(b);
while (likely(k >= 128)) {
__m128i t1 = _mm_loadu_si128(reinterpret_cast<const __m128i *>(bb)); bb += 16;
__m128i t2 = _mm_loadu_si128(reinterpret_cast<const __m128i *>(bb)); bb += 16;
__m128i t3 = _mm_loadu_si128(reinterpret_cast<const __m128i *>(bb)); bb += 16;
__m128i t4 = _mm_loadu_si128(reinterpret_cast<const __m128i *>(bb)); bb += 16;
_mm_storeu_si128(reinterpret_cast<__m128i *>(aa),t1); aa += 16;
_mm_storeu_si128(reinterpret_cast<__m128i *>(aa),t2); aa += 16;
_mm_storeu_si128(reinterpret_cast<__m128i *>(aa),t3); aa += 16;
_mm_storeu_si128(reinterpret_cast<__m128i *>(aa),t4); aa += 16;
__m128i t5 = _mm_loadu_si128(reinterpret_cast<const __m128i *>(bb)); bb += 16;
__m128i t6 = _mm_loadu_si128(reinterpret_cast<const __m128i *>(bb)); bb += 16;
__m128i t7 = _mm_loadu_si128(reinterpret_cast<const __m128i *>(bb)); bb += 16;
__m128i t8 = _mm_loadu_si128(reinterpret_cast<const __m128i *>(bb)); bb += 16;
_mm_storeu_si128(reinterpret_cast<__m128i *>(aa),t5); aa += 16;
_mm_storeu_si128(reinterpret_cast<__m128i *>(aa),t6); aa += 16;
_mm_storeu_si128(reinterpret_cast<__m128i *>(aa),t7); aa += 16;
_mm_storeu_si128(reinterpret_cast<__m128i *>(aa),t8); aa += 16;
k -= 128;
}
while (likely(k >= 16)) {
__m128i t1 = _mm_loadu_si128(reinterpret_cast<const __m128i *>(bb)); bb += 16;
_mm_storeu_si128(reinterpret_cast<__m128i *>(aa),t1); aa += 16;
k -= 16;
}
for(unsigned long i=0;i<k;++i)
aa[i] = bb[i];
}
#else
#define ZT_FAST_MEMCPY(a,b,c) memcpy(a,b,c)
#endif
namespace ZeroTier {
/**

4
node/World.hpp
View File

@ -217,8 +217,8 @@ public:
_id = b.template at<uint64_t>(p); p += 8;
_ts = b.template at<uint64_t>(p); p += 8;
memcpy(_updatesMustBeSignedBy.data,b.field(p,ZT_C25519_PUBLIC_KEY_LEN),ZT_C25519_PUBLIC_KEY_LEN); p += ZT_C25519_PUBLIC_KEY_LEN;
memcpy(_signature.data,b.field(p,ZT_C25519_SIGNATURE_LEN),ZT_C25519_SIGNATURE_LEN); p += ZT_C25519_SIGNATURE_LEN;
ZT_FAST_MEMCPY(_updatesMustBeSignedBy.data,b.field(p,ZT_C25519_PUBLIC_KEY_LEN),ZT_C25519_PUBLIC_KEY_LEN); p += ZT_C25519_PUBLIC_KEY_LEN;
ZT_FAST_MEMCPY(_signature.data,b.field(p,ZT_C25519_SIGNATURE_LEN),ZT_C25519_SIGNATURE_LEN); p += ZT_C25519_SIGNATURE_LEN;
const unsigned int numRoots = (unsigned int)b[p++];
if (numRoots > ZT_WORLD_MAX_ROOTS)
throw ZT_EXCEPTION_INVALID_SERIALIZED_DATA_OVERFLOW;

44
selftest.cpp
View File

@ -660,6 +660,50 @@ static int testOther()
std::cout << " " << InetAddress("").toString(buf);
std::cout << std::endl;
std::cout << "[other] Benchmarking memcpy... "; std::cout.flush();
{
unsigned char *bb = (unsigned char *)::malloc(1234567);
unsigned char *cc = (unsigned char *)::malloc(1234567);
for(unsigned int i=0;i<1234567;++i)
bb[i] = (unsigned char)i;
double bytes = 0.0;
uint64_t start = OSUtils::now();
for(unsigned int i=0;i<20000;++i) {
++bb[i];
++bb[i+1];
memcpy(cc,bb,1234567);
bytes += 1234567.0;
}
if (cc[0] != bb[0])
abort();
uint64_t end = OSUtils::now();
std::cout << ((bytes / 1048576.0) / ((long double)(end - start) / 1024.0)) << " MiB/second" << std::endl;
::free((void *)bb);
::free((void *)cc);
}
std::cout << "[other] Benchmarking ZT_FAST_MEMCPY... "; std::cout.flush();
{
unsigned char *bb = (unsigned char *)::malloc(1234567);
unsigned char *cc = (unsigned char *)::malloc(1234567);
for(unsigned int i=0;i<1234567;++i)
bb[i] = (unsigned char)i;
double bytes = 0.0;
uint64_t start = OSUtils::now();
for(unsigned int i=0;i<20000;++i) {
++bb[0];
++bb[1234566];
ZT_FAST_MEMCPY(cc,bb,1234567);
bytes += 1234567.0;
}
if (cc[0] != bb[0])
abort();
uint64_t end = OSUtils::now();
std::cout << ((bytes / 1048576.0) / ((long double)(end - start) / 1024.0)) << " MiB/second" << std::endl;
::free((void *)bb);
::free((void *)cc);
}
#if 0
std::cout << "[other] Testing Hashtable... "; std::cout.flush();
{

4
service/OneService.cpp
View File

@ -1971,7 +1971,7 @@ public:
// After setting up tap, fall through to CONFIG_UPDATE since we also want to do this...
case ZT_VIRTUAL_NETWORK_CONFIG_OPERATION_CONFIG_UPDATE:
memcpy(&(n.config),nwc,sizeof(ZT_VirtualNetworkConfig));
ZT_FAST_MEMCPY(&(n.config),nwc,sizeof(ZT_VirtualNetworkConfig));
if (n.tap) { // sanity check
#ifdef __WINDOWS__
// wait for up to 5 seconds for the WindowsEthernetTap to actually be initialized
@ -2298,7 +2298,7 @@ public:
else return 0;
const std::vector<InetAddress> *l = lh->get(ztaddr);
if ((l)&&(l->size() > 0)) {
memcpy(result,&((*l)[(unsigned long)_node->prng() % l->size()]),sizeof(struct sockaddr_storage));
ZT_FAST_MEMCPY(result,&((*l)[(unsigned long)_node->prng() % l->size()]),sizeof(struct sockaddr_storage));
return 1;
} else return 0;
}