05a14fc121
The original code which became rtnl_dump_done only shows netlink errors if the protocol is NETLINK_SOCK_DIAG, but netlink dumps always appends the length which contains any error encountered during the dump. Update rtnl_dump_done to always show the error if there is one. As an *example* without this patch, dumping a route object that exceeds the internal buffer size terminates with no message to the user -- the dump just ends because the NLMSG_DONE attribute was received. With this patch the user at least gets a message that the dump was aborted. $ ip ro ls default via 10.0.2.2 dev eth0 10.0.2.0/24 dev eth0 proto kernel scope link src 10.0.2.15 10.10.0.0/16 dev veth1 proto kernel scope link src 10.10.0.1 172.16.1.0/24 dev br0.11 proto kernel scope link src 172.16.1.1 Error: Buffer too small for object Dump terminated The point of this patch is to notify the user of a failure versus silently exiting on a partial dump. Because the NLMSG_DONE attribute was received, the entire dump needs to be restarted to use a larger buffer for EMSGSIZE errors. That could be done automatically but it has other user impacts (e.g., duplicate output if the dump is restarted) and should be the subject of a different patch. Signed-off-by: David Ahern <dsahern@gmail.com> |
||
|---|---|---|
| bash-completion | ||
| bridge | ||
| devlink | ||
| doc | ||
| etc/iproute2 | ||
| examples | ||
| genl | ||
| include | ||
| ip | ||
| lib | ||
| man | ||
| misc | ||
| netem | ||
| schema | ||
| tc | ||
| testsuite | ||
| tipc | ||
| .gitignore | ||
| COPYING | ||
| Makefile | ||
| README | ||
| README.decnet | ||
| README.devel | ||
| README.distribution | ||
| README.iproute2+tc | ||
| README.lnstat | ||
| configure | ||
README
This is a set of utilities for Linux networking.
Information:
http://www.linuxfoundation.org/collaborate/workgroups/networking/iproute2
Download:
http://www.kernel.org/pub/linux/utils/net/iproute2/
Repository:
git://git.kernel.org/pub/scm/linux/kernel/git/shemminger/iproute2.git
How to compile this.
--------------------
1. libdbm
arpd needs to have the db4 development libraries. For Debian
users this is the package with a name like libdb4.x-dev.
DBM_INCLUDE points to the directory with db_185.h which
is the include file used by arpd to get to the old format Berkeley
database routines. Often this is in the db-devel package.
2. make
The makefile will automatically build a Config file which
contains whether or not ATM is available, etc.
3. To make documentation, cd to doc/ directory , then
look at start of Makefile and set correct values for
PAGESIZE=a4 , ie: a4 , letter ... (string)
PAGESPERPAGE=2 , ie: 1 , 2 ... (numeric)
and make there. It assumes, that latex, dvips and psnup
are in your path.
4. This package includes matching sanitized kernel headers because
the build environment may not have up to date versions. See Makefile
if you have special requirements and need to point at different
kernel include files.
Stephen Hemminger
stephen@networkplumber.org
Alexey Kuznetsov
kuznet@ms2.inr.ac.ru