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respect SO_BROADCAST for received and sent datagrams.

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- check if the destination address is specified in IPv4's SendData()
 - minor cleanups to IPv4's TRACE()s.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20681 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Hugo Santos 2007-04-13 21:33:13 +00:00
parent 7e99a484fb
commit 49f3c71e21
4 changed files with 68 additions and 40 deletions
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20
headers/private/net/ProtocolUtilities.h
View File

@ -50,13 +50,14 @@ public:
status_t InitCheck() const;
status_t Enqueue(net_buffer *buffer);
status_t EnqueueClone(net_buffer *buffer);
net_buffer *Dequeue(bool clone);
status_t BlockingDequeue(bool clone, bigtime_t timeout,
net_buffer **_buffer);
status_t SocketDequeue(uint32 flags, net_buffer **_buffer);
void Clear();
status_t SocketEnqueue(net_buffer *buffer);
status_t SocketDequeue(uint32 flags, net_buffer **_buffer);
size_t AvailableData() const;
void WakeAll();
@ -65,7 +66,7 @@ public:
protected:
status_t _Enqueue(net_buffer *buffer);
status_t _EnqueueClone(net_buffer *buffer);
status_t _SocketEnqueue(net_buffer *buffer);
net_buffer *_Dequeue(bool clone);
void _Clear();
@ -141,15 +142,22 @@ DECL_DATAGRAM_SOCKET(inline status_t)::_Enqueue(net_buffer *buffer)
}
DECL_DATAGRAM_SOCKET(inline status_t)::EnqueueClone(net_buffer *_buffer)
DECL_DATAGRAM_SOCKET(inline status_t)::SocketEnqueue(net_buffer *_buffer)
{
AutoLocker _(fLock);
return _EnqueueClone(_buffer);
return _SocketEnqueue(_buffer);
}
DECL_DATAGRAM_SOCKET(inline status_t)::_EnqueueClone(net_buffer *_buffer)
DECL_DATAGRAM_SOCKET(inline status_t)::_SocketEnqueue(net_buffer *_buffer)
{
if (_buffer->flags & MSG_BCAST) {
// only deliver datagrams sent to a broadcast address
// to sockets with SO_BROADCAST on.
if (!(fSocket->options & SO_BROADCAST))
return B_OK;
}
net_buffer *buffer = ModuleBundle::Buffer()->clone(_buffer, false);
if (buffer == NULL)
return B_NO_MEMORY;

82
src/add-ons/kernel/network/protocols/ipv4/ipv4.cpp
View File

@ -31,9 +31,14 @@
//#define TRACE_IPV4
#ifdef TRACE_IPV4
# define TRACE(x) dprintf x
# define TRACE(format, args...) \
dprintf("IPv4 [%llu] " format "\n", system_time() , ##args)
# define TRACE_SK(protocol, format, args...) \
dprintf("IPv4 [%llu] %p " format "\n", system_time(), \
protocol , ##args)
#else
# define TRACE(x) ;
# define TRACE(args...) do { } while (0)
# define TRACE_SK(args...) do { } while (0)
#endif
struct ipv4_header {
@ -211,17 +216,17 @@ FragmentPacket::AddFragment(uint16 start, uint16 end, net_buffer *buffer,
return B_OK;
}
TRACE((" previous: %p, next: %p\n", previous, next));
TRACE(" previous: %p, next: %p", previous, next);
// If we have parts of the data already, truncate as needed
if (previous != NULL && previous->fragment.end > start) {
TRACE((" remove header %d bytes\n", previous->fragment.end - start));
TRACE(" remove header %d bytes", previous->fragment.end - start);
gBufferModule->remove_header(buffer, previous->fragment.end - start);
start = previous->fragment.end;
}
if (next != NULL && next->fragment.start < end) {
TRACE((" remove trailer %d bytes\n", next->fragment.start - end));
TRACE(" remove trailer %d bytes", next->fragment.start - end);
gBufferModule->remove_trailer(buffer, next->fragment.start - end);
end = next->fragment.start;
}
@ -238,7 +243,7 @@ FragmentPacket::AddFragment(uint16 start, uint16 end, net_buffer *buffer,
buffer->fragment.end = end;
status_t status = gBufferModule->merge(buffer, previous, false);
TRACE((" merge previous: %s\n", strerror(status)));
TRACE(" merge previous: %s", strerror(status));
if (status < B_OK) {
fFragments.Insert(next, previous);
return status;
@ -254,7 +259,7 @@ FragmentPacket::AddFragment(uint16 start, uint16 end, net_buffer *buffer,
fBytesLeft -= IP_MAXPACKET - end;
}
TRACE((" hole length: %d\n", (int)fBytesLeft));
TRACE(" hole length: %d", (int)fBytesLeft);
return B_OK;
} else if (next != NULL && next->fragment.start == end) {
@ -264,7 +269,7 @@ FragmentPacket::AddFragment(uint16 start, uint16 end, net_buffer *buffer,
buffer->fragment.end = next->fragment.end;
status_t status = gBufferModule->merge(buffer, next, true);
TRACE((" merge next: %s\n", strerror(status)));
TRACE(" merge next: %s", strerror(status));
if (status < B_OK) {
fFragments.Insert((net_buffer *)previous->link.next, next);
return status;
@ -280,14 +285,14 @@ FragmentPacket::AddFragment(uint16 start, uint16 end, net_buffer *buffer,
fBytesLeft -= IP_MAXPACKET - end;
}
TRACE((" hole length: %d\n", (int)fBytesLeft));
TRACE(" hole length: %d", (int)fBytesLeft);
return B_OK;
}
// We couldn't merge the fragments, so we need to add it as is
TRACE((" new fragment: %p, bytes %d-%d\n", buffer, start, end));
TRACE(" new fragment: %p, bytes %d-%d", buffer, start, end);
buffer->fragment.start = start;
buffer->fragment.end = end;
@ -301,7 +306,7 @@ FragmentPacket::AddFragment(uint16 start, uint16 end, net_buffer *buffer,
fBytesLeft -= IP_MAXPACKET - end;
}
TRACE((" hole length: %d\n", (int)fBytesLeft));
TRACE(" hole length: %d", (int)fBytesLeft);
return B_OK;
}
@ -373,7 +378,7 @@ FragmentPacket::Hash(void *_packet, const void *_key, uint32 range)
FragmentPacket::StaleTimer(struct net_timer *timer, void *data)
{
FragmentPacket *packet = (FragmentPacket *)data;
TRACE(("Assembling FragmentPacket %p timed out!\n", packet));
TRACE("Assembling FragmentPacket %p timed out!", packet);
BenaphoreLocker locker(&sFragmentLock);
@ -464,8 +469,8 @@ reassemble_fragments(const ipv4_header &header, net_buffer **_buffer)
uint16 end = start + header.TotalLength() - header.HeaderLength();
bool lastFragment = (fragmentOffset & IP_MORE_FRAGMENTS) == 0;
TRACE((" Received IPv4 %sfragment of size %d, offset %d.\n",
lastFragment ? "last ": "", end - start, start));
TRACE(" Received IPv4 %sfragment of size %d, offset %d.",
lastFragment ? "last ": "", end - start, start);
// Remove header unless this is the first fragment
if (start != 0)
@ -500,8 +505,7 @@ static status_t
send_fragments(ipv4_protocol *protocol, struct net_route *route,
net_buffer *buffer, uint32 mtu)
{
TRACE(("ipv4 needs to fragment (size %lu, MTU %lu)...\n",
buffer->size, mtu));
TRACE_SK(protocol, "SendFragments(%lu bytes, mtu %lu)", buffer->size, mtu);
NetBufferHeaderReader<ipv4_header> originalHeader(buffer);
if (originalHeader.Status() < B_OK)
@ -581,7 +585,7 @@ raw_receive_data(net_buffer *buffer)
{
BenaphoreLocker locker(sRawSocketsLock);
TRACE(("ipv4:raw_receive_data(): protocol %i\n", buffer->protocol));
TRACE("RawReceiveData(%i)", buffer->protocol);
RawSocketList::Iterator iterator = sRawSockets.GetIterator();
@ -589,7 +593,7 @@ raw_receive_data(net_buffer *buffer)
RawSocket *raw = iterator.Next();
if (raw->Socket()->protocol == buffer->protocol)
raw->EnqueueClone(buffer);
raw->SocketEnqueue(buffer);
}
}
@ -662,6 +666,8 @@ ipv4_open(net_protocol *_protocol)
return status;
}
TRACE_SK(protocol, "Open()");
protocol->raw = raw;
BenaphoreLocker locker(sRawSocketsLock);
@ -678,6 +684,8 @@ ipv4_close(net_protocol *_protocol)
if (raw == NULL)
return B_ERROR;
TRACE_SK(protocol, "Close()");
BenaphoreLocker locker(sRawSocketsLock);
sRawSockets.Remove(raw);
delete raw;
@ -859,7 +867,8 @@ ipv4_send_routed_data(net_protocol *_protocol, struct net_route *route,
ipv4_protocol *protocol = (ipv4_protocol *)_protocol;
net_interface *interface = route->interface;
TRACE(("someone tries to send some actual routed data!\n"));
TRACE_SK(protocol, "SendRoutedData(%p, %p [%ld bytes])", route, buffer,
buffer->size);
sockaddr_in &source = *(sockaddr_in *)&buffer->source;
sockaddr_in &destination = *(sockaddr_in *)&buffer->destination;
@ -908,12 +917,12 @@ ipv4_send_routed_data(net_protocol *_protocol, struct net_route *route,
*IPChecksumField(buffer) = gBufferModule->checksum(buffer, 0,
sizeof(ipv4_header), true);
TRACE(("header chksum: %ld, buffer checksum: %ld\n",
TRACE_SK(protocol, " SendRoutedData(): header chksum: %ld, buffer checksum: %ld",
gBufferModule->checksum(buffer, 0, sizeof(ipv4_header), true),
gBufferModule->checksum(buffer, 0, buffer->size, true)));
gBufferModule->checksum(buffer, 0, buffer->size, true));
TRACE(("destination-IP: buffer=%p addr=%p %08lx\n", buffer, &buffer->destination,
ntohl(destination.sin_addr.s_addr)));
TRACE_SK(protocol, " SendRoutedData(): destination: %08lx",
ntohl(destination.sin_addr.s_addr));
uint32 mtu = route->mtu ? route->mtu : interface->mtu;
if (buffer->size > mtu) {
@ -928,7 +937,17 @@ ipv4_send_routed_data(net_protocol *_protocol, struct net_route *route,
status_t
ipv4_send_data(net_protocol *protocol, net_buffer *buffer)
{
TRACE(("someone tries to send some actual data!\n"));
TRACE_SK(protocol, "SendData(%p [%ld bytes])", buffer, buffer->size);
sockaddr_in &destination = *(sockaddr_in *)&buffer->destination;
if (destination.sin_len == 0 || destination.sin_addr.s_addr == INADDR_ANY)
return EDESTADDRREQ;
else if (destination.sin_addr.s_addr == INADDR_BROADCAST) {
// TODO check for local broadcast addresses as well?
if (protocol && !(protocol->socket->options & SO_BROADCAST))
return B_BAD_VALUE;
}
net_route *route = NULL;
status_t status = sDatalinkModule->get_buffer_route(sDomain, buffer,
@ -958,7 +977,8 @@ ipv4_read_data(net_protocol *_protocol, size_t numBytes, uint32 flags,
if (raw == NULL)
return B_ERROR;
TRACE(("read is waiting for data...\n"));
TRACE_SK(protocol, "ReadData(%lu, 0x%lx)", numBytes, flags);
return raw->SocketDequeue(flags, _buffer);
}
@ -1003,7 +1023,7 @@ ipv4_get_mtu(net_protocol *protocol, const struct sockaddr *address)
status_t
ipv4_receive_data(net_buffer *buffer)
{
TRACE(("IPv4 received a packet (%p) of %ld size!\n", buffer, buffer->size));
TRACE("ReceiveData(%p [%ld bytes])", buffer, buffer->size);
NetBufferHeaderReader<ipv4_header> bufferHeader(buffer);
if (bufferHeader.Status() < B_OK)
@ -1040,8 +1060,8 @@ ipv4_receive_data(net_buffer *buffer)
uint32 matchedAddressType;
if (!sDatalinkModule->is_local_address(sDomain, (sockaddr*)&destination,
&buffer->interface, &matchedAddressType)) {
TRACE(("this packet was not for us %lx -> %lx\n",
ntohl(header.source), ntohl(header.destination)));
TRACE(" ReceiveData(): packet was not for us %lx -> %lx",
ntohl(header.source), ntohl(header.destination));
return B_ERROR;
}
if (matchedAddressType != 0) {
@ -1061,15 +1081,15 @@ ipv4_receive_data(net_buffer *buffer)
if ((fragmentOffset & IP_MORE_FRAGMENTS) != 0
|| (fragmentOffset & IP_FRAGMENT_OFFSET_MASK) != 0) {
// this is a fragment
TRACE((" Found a Fragment!\n"));
TRACE(" ReceiveData(): Found a Fragment!");
status = reassemble_fragments(header, &buffer);
TRACE((" -> %s!\n", strerror(status)));
TRACE(" ReceiveData(): -> %s", strerror(status));
if (status != B_OK)
return status;
if (buffer == NULL) {
// buffer was put into fragment packet
TRACE((" Not yet assembled...\n"));
TRACE(" ReceiveData(): Not yet assembled.");
return B_OK;
}
}

2
src/add-ons/kernel/network/protocols/udp/udp.cpp
View File

@ -938,7 +938,7 @@ UdpEndpoint::StoreData(net_buffer *buffer)
{
TRACE_EP("StoreData(%p [%ld bytes])", buffer, buffer->size);
return EnqueueClone(buffer);
return SocketEnqueue(buffer);
}

2
src/add-ons/kernel/network/stack/link.cpp
View File

@ -169,7 +169,7 @@ LinkProtocol::_Unregister()
status_t
LinkProtocol::_MonitorData(net_device_monitor *monitor, net_buffer *packet)
{
return ((LinkProtocol *)monitor->cookie)->EnqueueClone(packet);
return ((LinkProtocol *)monitor->cookie)->SocketEnqueue(packet);
}