This patchset introduces a cgroup controller for the networking subsystem as a whole. As of now, this controller will be used for:
* Limiting the specific ports that a process in a cgroup is allowed to bind to or listen on. For example, you can say that all the processes in a cgroup can only bind to ports 1000-2000, and listen on ports 1000-1100, which guarantees that the remaining ports will be available for other processes. * Restricting which DSCP values processes can use with their sockets. For example, you can say that all the processes in a cgroup can only send packets with a DSCP tag between 48 and 63 (corresponding to TOS values of 192 to 255). * Limiting the total number of udp ports that can be used by a process in a cgroup. For example, you can say that all the processes in one cgroup are allowed to use a total of up to 100 udp ports. Since the total number of udp ports that can be used by all processes is limited, this is useful for rationing out the ports to different process groups. In the future, more networking-related properties may be added to this controller. Anoop Naravaram (5): net: create the networking cgroup controller net: add bind/listen ranges to net cgroup net: add udp limit to net cgroup net: add dscp ranges to net cgroup net: add test for net cgroup Documentation/cgroup-v1/net.txt | 95 +++++ include/linux/cgroup_subsys.h | 4 + include/net/net_cgroup.h | 103 ++++++ net/Kconfig | 10 + net/core/Makefile | 1 + net/core/net_cgroup.c | 706 ++++++++++++++++++++++++++++++++++++++ net/ipv4/af_inet.c | 8 + net/ipv4/inet_connection_sock.c | 7 + net/ipv4/ip_sockglue.c | 13 + net/ipv4/udp.c | 8 + net/ipv6/af_inet6.c | 7 + net/ipv6/datagram.c | 9 + net/ipv6/ipv6_sockglue.c | 8 + scripts/cgroup/net_cgroup_test.py | 359 +++++++++++++++++++ 14 files changed, 1338 insertions(+) create mode 100644 Documentation/cgroup-v1/net.txt create mode 100644 include/net/net_cgroup.h create mode 100644 net/core/net_cgroup.c create mode 100755 scripts/cgroup/net_cgroup_test.py -- 2.8.0.rc3.226.g39d4020
