linux.git/net/ipv4/af_inet.c, branch v2.6.20

[INET]: style updates for the inet_sock->is_icsk assignment fix

2007-01-09T22:37:06+00:00

A quick patch to change the inet_sock->is_icsk assignment to better fit with
existing kernel coding style.

Signed-off-by: Paul Moore 
Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: David S. Miller

[INET]: Fix incorrect "inet_sock->is_icsk" assignment.

2007-01-09T08:29:51+00:00

The inet_create() and inet6_create() functions incorrectly set the
inet_sock->is_icsk field.  Both functions assume that the is_icsk field is
large enough to hold at least a INET_PROTOSW_ICSK value when it is actually
only a single bit.  This patch corrects the assignment by doing a boolean
comparison whose result will safely fit into a single bit field.

Signed-off-by: Paul Moore 
Signed-off-by: David S. Miller

[IPV6]: Assorted trivial endianness annotations.

2006-12-03T05:22:50+00:00

Signed-off-by: Al Viro 
Signed-off-by: David S. Miller

[NET]: Supporting UDP-Lite (RFC 3828) in Linux

2006-12-03T05:22:46+00:00

This is a revision of the previously submitted patch, which alters
the way files are organized and compiled in the following manner:

	* UDP and UDP-Lite now use separate object files
	* source file dependencies resolved via header files
	  net/ipv{4,6}/udp_impl.h
	* order of inclusion files in udp.c/udplite.c adapted
	  accordingly

[NET/IPv4]: Support for the UDP-Lite protocol (RFC 3828)

This patch adds support for UDP-Lite to the IPv4 stack, provided as an
extension to the existing UDPv4 code:
        * generic routines are all located in net/ipv4/udp.c
        * UDP-Lite specific routines are in net/ipv4/udplite.c
        * MIB/statistics support in /proc/net/snmp and /proc/net/udplite
        * shared API with extensions for partial checksum coverage

[NET/IPv6]: Extension for UDP-Lite over IPv6

It extends the existing UDPv6 code base with support for UDP-Lite
in the same manner as per UDPv4. In particular,
        * UDPv6 generic and shared code is in net/ipv6/udp.c
        * UDP-Litev6 specific extensions are in net/ipv6/udplite.c
        * MIB/statistics support in /proc/net/snmp6 and /proc/net/udplite6
        * support for IPV6_ADDRFORM
        * aligned the coding style of protocol initialisation with af_inet6.c
        * made the error handling in udpv6_queue_rcv_skb consistent;
          to return `-1' on error on all error cases
        * consolidation of shared code

[NET]: UDP-Lite Documentation and basic XFRM/Netfilter support

The UDP-Lite patch further provides
        * API documentation for UDP-Lite
        * basic xfrm support
        * basic netfilter support for IPv4 and IPv6 (LOG target)

Signed-off-by: Gerrit Renker 
Signed-off-by: David S. Miller

[NET]: Size listen hash tables using backlog hint

2006-12-03T05:21:44+00:00

We currently allocate a fixed size (TCP_SYNQ_HSIZE=512) slots hash table for
each LISTEN socket, regardless of various parameters (listen backlog for
example)

On x86_64, this means order-1 allocations (might fail), even for 'small'
sockets, expecting few connections. On the contrary, a huge server wanting a
backlog of 50000 is slowed down a bit because of this fixed limit.

This patch makes the sizing of listen hash table a dynamic parameter,
depending of :
- net.core.somaxconn tunable (default is 128)
- net.ipv4.tcp_max_syn_backlog tunable (default : 256, 1024 or 128)
- backlog value given by user application  (2nd parameter of listen())

For large allocations (bigger than PAGE_SIZE), we use vmalloc() instead of
kmalloc().

We still limit memory allocation with the two existing tunables (somaxconn &
tcp_max_syn_backlog). So for standard setups, this patch actually reduce RAM
usage.

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

[IPV4]: struct ip_options annotations

2006-09-29T01:01:53+00:00

->faddr is net-endian; annotated as such, variables inferred to be net-endian
annotated.

Signed-off-by: Al Viro 
Signed-off-by: David S. Miller

[IPV4]: Fix order in inet_init failure path.

2006-09-29T01:01:48+00:00

This is just a minor buglet I came across by accident - when inet_init
fails to register raw_prot, it jumps to out_unregister_udp_proto which
should unregister UDP _and_ TCP.

Signed-off-by: Olaf Kirch 
Signed-off-by: David S. Miller

[IPV4]: ip_route_connect() ipv4 address arguments annotated

2006-09-29T00:54:06+00:00

annotated address arguments (port number left alone for now); ditto
for inferred net-endian variables in callers.

Signed-off-by: Al Viro 
Signed-off-by: David S. Miller

[NET]: Use BUILD_BUG_ON() for checking size of skb->cb.

2006-09-22T22:18:15+00:00

Signed-off-by: YOSHIFUJI Hideaki 
Signed-off-by: David S. Miller

[NET/IPV4/IPV6]: Change some sysctl variables to __read_mostly

2006-09-22T21:55:03+00:00

Change net/core, ipv4 and ipv6 sysctl variables to __read_mostly.

Couldn't actually measure any performance increase while testing (.3%
I consider noise), but seems like the right thing to do.

Signed-off-by: Brian Haley 
Signed-off-by: David S. Miller