21e9e801e2
[udp] Avoid reusing auto-allocated ports after connection close.
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This duplicates a fix made to tcp.c in commit
d5735c631c
2008-07-10 04:21:10 +01:00
aa160211c2
[udp] Verify local socket address (if specified) for UDP sockets
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UDP sockets can be used for multicast, at which point it becomes
plausible that we could receive packets that aren't destined for us
but that still match on a port number.
2008-06-10 00:01:29 +01:00
f6a8158eed
Make seek information part of the xfer metadata, rather than an entirely
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separate xfer method.
Add missing .alloc_iob entries to several xfer_interface_operations
structures.
2008-01-08 16:46:55 +00:00
df868476e7
Various warnings fixups for OpenBSD with gcc-3.3.5.
2007-12-07 00:11:43 +00:00
423e9d72f3
udp_open_promisc() calls udp_open_common() with peer==NULL.
2007-11-28 11:56:14 +00:00
b34d4d0449
Separate the "is data ready" function of xfer_seek() into an
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xfer_window() function, which can return a scalar rather than a
boolean.
2007-07-08 14:11:07 +01:00
ca4c6f9eee
Kill off unused request() method in data-xfer interface.
2007-07-08 02:10:54 +01:00
389c63d7c4
convert to zalloc
2007-07-06 21:08:41 +02:00
5de837cc67
Mildly ugly hack to force correct linkage.
2007-06-28 18:06:25 +01:00
07dc294de8
Update DHCP to use data-xfer interface (not yet tested).
2007-06-27 23:20:36 +01:00
f77815f2b1
Kill off hotplug.h and just make net devices normal reference-counted
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structures.
DHCP still broken and #if 0'd out.
2007-06-27 14:48:31 +01:00
e381714c07
Partial migration of UDP to data-xfer interface. (Will not link at
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present; DHCP is broken).
2007-06-20 01:13:35 +01:00
3e2c6b6736
pkbuff->iobuf changeover
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Achieved via Perl using:
perl -pi -e 's/pk_buff/io_buffer/g; s/Packet buffer/I\/O buffer/ig; ' \
-e 's/pkbuff\.h/iobuf.h/g; s/pkb_/iob_/g; s/_pkb/_iob/g; ' \
-e 's/pkb/iobuf/g; s/PKB/IOB/g;'
2007-05-19 18:39:40 +00:00
ff5aac826a
hoffmeis: Fixing situation where absence of a newdata() handler for UDP
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connections might break things. Only-sending applications like syslog()
do not need a newdata() handler, so added a check if that handler exists.
2007-04-09 17:34:10 +00:00
f11da20f25
When a network device is specified to tcpip_tx() or it's children, treat
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it as a fallback network device rather than an explicitly forced network
device.
Clear routing table entries before re-attempting DHCP.
2007-01-16 04:09:13 +00:00
bcdb6fad3e
Improve debug messages
2007-01-16 03:19:40 +00:00
753e156844
Allow udp_{send,sendto,sendto_via} to be called outside of the
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udp_senddata() callback. This will simplify any UDP protocols that don't
need the temporary buffer.
2007-01-10 02:46:39 +00:00
c821a7b20d
Add udp_sendto_via() to allow e.g. DHCP to transmit without first having
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to set up dummy routing entries.
2007-01-10 02:31:38 +00:00
f008b77ba2
Allow an explicit network device to be specified for IP-layer
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transmissions.
2007-01-10 02:25:11 +00:00
18e5353bed
Rename pkb_available() to pkb_tailroom() for consistency with Linux's
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skb_tailroom(). Add pkb_headroom().
2007-01-09 20:56:31 +00:00
20681d6168
Allow empty checksums on received packets
2007-01-04 05:17:28 +00:00
94fc68895d
Improve consistency between TCP and UDP RX datapaths
2007-01-03 21:13:11 +00:00
a0525a4ed3
Verify checksums on the RX datapath.
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Simplify checksum generation on the TX datapath.
2007-01-03 20:48:52 +00:00
88e38fa148
We don't actually have a stdio.h header file. Our printf() functions are
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defined in vsprintf.h. (This may change, since vsprintf.h is a
non-standard name, but for now it's the one to use.)
There should be no need to include vsprintf.h just for DBG() statements,
since include/compiler.h forces it in for a debug build anyway.
2006-09-27 10:58:14 +00:00
6ac78f6aff
added stdio.h to includes for DBG compilation
2006-09-27 05:57:06 +00:00
ee9ae8130a
Remove _PROTOCOL macros for gcc 3.2 compatibility
2006-08-09 04:42:14 +00:00
a3d508b648
Clarified packet ownership transfer between a few functions.
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Added a large number of missing calls to free_pkb(). In the case of UDP,
no received packets were ever freed, which lead to memory exhaustion
remarkably quickly once pxelinux started up.
In general, any function with _rx() in its name which accepts a pk_buff
*must* either call free_pkb() or pass the pkb to another _rx() function
(e.g. the next layer up the stack). Since the UDP (and TCP) layers don't
pass packet buffers up to the higher-layer protocols (the
"applications"), they must free the packet buffer after calling the
application's newdata() method.
2006-08-09 01:24:32 +00:00
eb24eece0e
Convert some trivial functions to static inlines.
2006-08-03 23:42:03 +00:00
ffe0e24249
Make the UDP senddata() methods return a status code.
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udp_connect() now follows the standard BSD sockets semantics and simply
sets the default address for outgoing packets; it doesn't filter incoming
packets.
2006-08-03 23:10:14 +00:00
a0a872f7f1
Updated PXE UDP implementation to use the new Etherboot UDP API.
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Updated PXE API dispatcher to use copy_{to,from}_user, and moved to
arch/i386 since the implementation is quite architecture-dependent.
(The individual PXE API calls can be largely
architecture-independent.)
2006-08-02 23:08:10 +00:00
467e9627cc
Added features that will be required for PXE UDP support.
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Introduced struct sockaddr_tcpip, to simplify code that deals with
both IPv4 and IPv6 addresses.
Reorganised parts of tcpip.c and udp.c.
2006-08-02 00:02:21 +00:00
1ebb68e49a
Renamed trans_{rx,tx}() to tcpip_{rx,tx}(), since they are specific to
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the TCP/IP protocol suite (rather than being general transport-layer
functions).
2006-08-01 14:22:04 +00:00
3a0e293123
Renamed tcpip_if.[ch] to tcpip.[ch]
2006-08-01 14:18:09 +00:00
21c3d63c2e
We shouldn't need to allocate a TX packet buffer when calling newdata();
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if the application wants to send data then it will have to use the normal
senddata() mechanism.
2006-08-01 14:13:58 +00:00
29b358dd39
conn->local_port is now network-endian; do not swap when comparing
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against value in header.
Temporarily disable RX checksumming; it's broken and is holding up
work on higher-layer protocols
.
2006-07-20 00:03:01 +00:00
2c0eb6eb1d
Correct TCP/IP checksum generation.
2006-07-19 23:38:05 +00:00
13dbf5494d
Minor edits
2006-07-19 21:05:58 +00:00
a38010fb0e
Make udp_send() call udp_sendto(), rather than vice-versa.
2006-07-19 20:38:49 +00:00
7c84b74185
A small but very critical bug.
2006-07-19 20:16:46 +00:00
82f3295794
Use more standardised format specifiers in debug messages (e.g. %p for
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a pointer).
2006-07-19 18:45:18 +00:00
ab633f6a73
Reserve space for lower-layer headers when allocating packet buffer.
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Use pkb_available() rather than pkb_len() (which will always return 0
on a freshly allocated buffer).
udp_send() should assume that the buffer has already been allocated.
2006-07-19 18:21:30 +00:00
bf515d3d65
Minor edit in net/udp.c
2006-07-19 16:27:54 +00:00
ab577e1a3a
The following edits were made: \
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1. Updated UDP send data code\
2. Corrected internet checksum\
3. Moved udp_buffer() and udp_buflen() to udp.c from udp.h
2006-07-19 16:25:23 +00:00
5f651f8622
Added fragment reassembly code
2006-06-30 08:52:03 +00:00
c9ea710930
Renamed net/interface.c and include/gpxe/interface.h to net/tcpip_if.c and include/gpxe/tcpip_if.h respectively. Made changes in the other files.
2006-06-28 15:43:08 +00:00
a6c6b3d739
Fixed whitespaces; updated UDP code
2006-06-28 07:46:28 +00:00
74339b3c6e
updated UDP interface
2006-06-25 05:13:17 +00:00
Michael Brown