linux/net
Gerrit Renker 7c559a9e44 [DCCP]: Add socket option to query the current MPS
This enables applications to query the current value of the Maximum
Packet Size via a socket option, suggested as a SHOULD in (RFC 4340,
p. 102).

This socket option is useful to avoid the annoying bail-out via
`-EMSGSIZE'.  In particular, as fragmentation is not currently
supported (and its use is partly discouraged in RFC 4340).

With this option, it is possible to size buffers accordingly, e.g.

	int buflen = dccp_get_cur_mps(sockfd);

	/* or */
	if (msgsize > dccp_get_cur_mps(sockfd))
		die("message is too large for this path");

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:54:31 -07:00
..
9p 9p: fix bad error path in conversion routines 2007-08-23 10:25:05 -05:00
802 [NET]: Move hardware header operations out of netdevice. 2007-10-10 16:52:52 -07:00
8021q [NET]: Move hardware header operations out of netdevice. 2007-10-10 16:52:52 -07:00
appletalk [NET]: Move hardware header operations out of netdevice. 2007-10-10 16:52:52 -07:00
atm [ATM] net/atm/lec.c: printk warning fix 2007-10-10 16:52:54 -07:00
ax25 [NET]: Move hardware header operations out of netdevice. 2007-10-10 16:52:52 -07:00
bluetooth [BLUETOOTH]: Make hidp_setup_input() return int 2007-10-10 16:52:39 -07:00
bridge [NETFILTER]: bridge: remove broken netfilter binary sysctls 2007-10-10 16:53:41 -07:00
core [NETNS]: Simplify the network namespace list locking rules. 2007-10-10 16:52:55 -07:00
dccp [DCCP]: Add socket option to query the current MPS 2007-10-10 16:54:31 -07:00
decnet [NET]: Wrap netdevice hardware header creation. 2007-10-10 16:52:50 -07:00
econet [NET]: Wrap netdevice hardware header creation. 2007-10-10 16:52:50 -07:00
ethernet [NET]: Move hardware header operations out of netdevice. 2007-10-10 16:52:52 -07:00
ieee80211 [IEEE80211]: Fix softmac lockdep reports. 2007-10-10 16:52:22 -07:00
ipv4 [TCP]: Wrap-safed reordering detection FRTO check 2007-10-10 16:54:00 -07:00
ipv6 [NETFILTER]: ctnetlink: use netlink policy 2007-10-10 16:53:35 -07:00
ipx [NET]: Make the device list and device lookups per namespace. 2007-10-10 16:49:10 -07:00
irda [NET]: Introduce and use print_mac() and DECLARE_MAC_BUF() 2007-10-10 16:51:42 -07:00
iucv [NET]: Make socket creation namespace safe. 2007-10-10 16:49:07 -07:00
key [NET]: Make socket creation namespace safe. 2007-10-10 16:49:07 -07:00
lapb [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
llc [NET]: Introduce and use print_mac() and DECLARE_MAC_BUF() 2007-10-10 16:51:42 -07:00
mac80211 [MAC80211]: add sta_notify callback 2007-10-10 16:54:21 -07:00
netfilter [NETFILTER]: x_tables: add xt_time match 2007-10-10 16:53:40 -07:00
netlabel [NETLINK]: Introduce nested and byteorder flag to netlink attribute 2007-10-10 16:49:16 -07:00
netlink [NETLINK]: the temp variable name max is ambiguous 2007-10-10 16:51:25 -07:00
netrom [NET]: Move hardware header operations out of netdevice. 2007-10-10 16:52:52 -07:00
packet [NET]: Move hardware header operations out of netdevice. 2007-10-10 16:52:52 -07:00
rfkill [RFKILL]: Add support for hardware-only rfkill buttons 2007-10-10 16:54:11 -07:00
rose [NET]: Move hardware header operations out of netdevice. 2007-10-10 16:52:52 -07:00
rxrpc [NET]: Make socket creation namespace safe. 2007-10-10 16:49:07 -07:00
sched [PKT_SCHED]: Add stateless NAT 2007-10-10 16:53:11 -07:00
sctp [SCTP]: Tie ADD-IP and AUTH functionality as required by spec. 2007-10-10 16:51:33 -07:00
sunrpc [NET]: Make /proc/net per network namespace 2007-10-10 16:49:06 -07:00
tipc [NET]: Wrap netdevice hardware header creation. 2007-10-10 16:52:50 -07:00
unix [NET]: Make socket creation namespace safe. 2007-10-10 16:49:07 -07:00
wanrouter [NET]: Make /proc/net per network namespace 2007-10-10 16:49:06 -07:00
wireless [WIRELESS]: Fix Kconfig. 2007-10-10 16:52:52 -07:00
x25 [NET]: Make the device list and device lookups per namespace. 2007-10-10 16:49:10 -07:00
xfrm [NET]: Make the loopback device per network namespace. 2007-10-10 16:52:49 -07:00
Kconfig [NET]: Add network namespace clone & unshare support. 2007-10-10 16:52:46 -07:00
Makefile 9p: Reorganization of 9p file system code 2007-07-14 15:13:40 -05:00
TUNABLE
compat.c O_CLOEXEC for SCM_RIGHTS 2007-07-16 09:05:45 -07:00
nonet.c
socket.c [NET]: Make the device list and device lookups per namespace. 2007-10-10 16:49:10 -07:00
sysctl_net.c Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00