Note: The code for this is not upstream yet.
Extends the link api to allow address family modules to fill a link
message and implements a AF_INET address family link module which
uses the new interface.
This feature isn't upstream yet. It's required to test a patch in
my local tree.
Makes the link parser understand IFLA_AF_SPEC and call the address
family specific parser.
Adds a family argument which allows to request link dumps for a certain
address family. This allows to f.e. dump ipv6 specific statistics and data.
nl-link-list --family inet6
Introduces a new API to handle address familiy specific link data such as
IFLA_PROTINFO. It provides entry hooks for parsing IFLA_PROTINFO attributes
and allows to include the parsed data when a link object is dumped.
- parse IFLA_IFALIAS if available
- provides API to access/change ifalias
rtnl_link_get_ifalias(link)
rtnl_link_set_ifalias(link, alias)
- extends nl-link-set to test functionality
Manually editing etc/libnl/classid before adding tc objects is a pain.
This patch adds code to attempt auto generating a unique tc id which
will then be assigned to the provided name and added to the classid
file.
This will make the following commands work with prior definitions of
the names "top" and "test"
sudo sbin/nl-qdisc-add --dev eth0 --parent root --id top htb
sudo sbin/nl-class-add --dev eth0 --parent top --id test htb --rate 100mbit
It will generate the following ids automatically:
4001: top
4001:1 test
- Fixes a bunch of bugs related to ematches
- Adds support for the nbyte ematch
- Adds a bison/flex parser for ematch expressions, expressions
may look like this:
ip.length > 256 && pattern(ip6.src = 3ffe::/16)
documenation on syntax follows
- adds ematch support to the basic classifier (--ematch EXPR)
The netlink message buffer is preallocated to a page and later
expanded as needed. Everything was properly paded and zeroed
out except for the unused part at the end. Use calloc() to
allocate the buffer.
This patch includes various bugfixes in the packet location parser.
Namely it removes two memory leaks if parsing fails. The parser is
correctly quit if an allocation error occurs and it is no longer
possible to add duplicates.
It removes the possibility to differ between net and host byteorder.
This is better done in the actual classifiers as it makes more sense
to specify this together with the value to compare against.
The patch also extends the API to add new packet locations via
rtnl_pktloc_add().
It introduces reference counting, therefore you now have to give
back packet locations with rtnl_pktloc_put() after looking them up
with rtnl_pktloc_lookup(). But you are allowed to keep using them
if the packet location file has been reread.
The packet location file now also understands "eth", "ip", and
"tcp" for "link", "net", and "transport".
A --list option has been added to nl-pktloc-lookup to list all
packet location definitions
A --u32=VALUE option has been added to let nl-pktloc-lookup print
the definition in iproute2's u32 selector style.
A manual page has been written for nl-pktloc-lookup.
Finally, nl-pktloc-lookup has been made installable.
So far all common tc atttributes were accessed via specific functions, i.e.
rtnl_class_set_parent(), rtnl_qdisc_set_parent(), rtnl_cls_set_parent()
which implied a lot of code duplication. Since all tc objects are derived
from struct rtnl_tc and these common attributes are already stored in there
this patch removes all type specific functions and makes rtnl_tc_* attribute
functions public.
rtnl_qdisc_set_parent(qdisc, 10);
becomes:
rtnl_tc_set_parent((struct rtnl_tc *) qdisc, 10);
This patch also adds the following new attributes to tc objects therefore
removing them as tc specific attributes:
- mtu
- mpu
- overhead
This allows for the rate table calculations to be unified as well taking into
account the new kernel behavior to take care of overhead automatically.
Dumping objects as environment variables has never been implemented
completely and only increases the size of the library for no real
purpose. Integration into scripts is better achieved by implementing
a python module anyway.
Adds a cli based tool to add/update traffic classes. This tool requires
each class to be supported via the respetive qdisc module in
pkglibdir/cli/qdisc/$name.so.
Syntax:
nl-class-add --dev eth2 --parent 1: --id 1:1 htb --rate 100mbit
nl-class-add --update --dev eth2 --id 1:1 htb --rate 200mbit
A database to resolve qdisc/class names to classid values and vice versa.
The function rtnl_tc_handle2str() and rtnl_tc_str2handle() will resolve
names automatically.
A CLI based tool nl-classid-lookup is provided to integrate the database
into existing iproute2 scripts.
Adds a cli based tool to add/update/replace qdiscs. This tool requires
each qdisc to be supported via a dynamic loadable module in
pkglibdir/cli/qdisc/$name.so.
So far HTB and blackhole have been implemented.
Syntax:
nl-qdisc-add --dev eth2 --parent root --id 1: htb --r2q=5
nl-qdisc-add --update-only --dev eth2 --id 1: htb --r2q=10
I have a patch against commit d378220c96
extending libnl with a facility to receive generic netlink messages sent
to multicast groups.
Essentially it add one new function genl_ctrl_resolve_grp which
prototype looks like this
int genl_ctrl_resolve_grp(struct nl_sock *sk, const char *family_name,
const char *grp_name)
It resolves the family name and the group name to group id. Then
the returned id can be used in nl_socket_add_membership to subscribe
to multicast messages.
Besides that it adds two more functions
uint32_t nl_socket_get_peer_groups(struct nl_sock *sk)
void nl_socket_set_peer_groups(struct nl_sock *sk, uint32_t groups)
allowing to modify the socket peer groups field. So it's possible to
multicast messages from the user space using the legacy interface.
Looks like there is no way (or I was not able to find one?) to modify
the netlink socket destination group from the user space, when the
group id is greater then 32.
