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2012-11-19mlx4_en: Remove remnants of LRO supportBen Hutchings3-25/+4
Commit fa37a9586f92051de03a13e55e5ec3880bb6783e ('mlx4_en: Moving to work with GRO') left behind the Kconfig depends/select, some dead code and comments referring to LRO. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-19net: remove unnecessary wireless includesJohannes Berg1-2/+0
The wireless and wext includes in net-sysfs.c aren't needed, so remove them. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-19net/ethernet: remove useless is_valid_ether_addr from drivers ndo_openJoachim Eastwood13-62/+1
If ndo_validate_addr is set to the generic eth_validate_addr function there is no point in calling is_valid_ether_addr from driver ndo_open if ndo_open is not used elsewhere in the driver. With this change is_valid_ether_addr will be called from the generic eth_validate_addr function. So there should be no change in the actual behavior. Signed-off-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-19net: rds: use this_cpu_* per-cpu helperShan Wei2-12/+14
Signed-off-by: Shan Wei <davidshan@tencent.com> Reviewed-by: Christoph Lameter <cl@linux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-19net: core: use this_cpu_ptr per-cpu helperShan Wei1-3/+1
flush_tasklet is a struct, not a pointer in percpu var. so use this_cpu_ptr to get the member pointer. Signed-off-by: Shan Wei <davidshan@tencent.com> Reviewed-by: Christoph Lameter <cl@linux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-19vhost: Remove duplicate inclusion of linux/vhost.hSachin Kamat1-1/+0
linux/vhost.h was included twice. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-19net/macb: move to circ_buf macros and fix initial conditionNicolas Ferre1-10/+7
Move to circular buffers management macro and correct an error with circular buffer initial condition. Without this patch, the macb_tx_ring_avail() function was not reporting the proper ring availability at startup: macb macb: eth0: BUG! Tx Ring full when queue awake! macb macb: eth0: tx_head = 0, tx_tail = 0 And hanginig forever... I remove the macb_tx_ring_avail() function and use the proven macros from circ_buf.h. CIRC_CNT() is used in the "consumer" part of the driver: macb_tx_interrupt() to match advice from Documentation/circular-buffers.txt. Reported-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Tested-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-19netfilter: Remove the spurious \ in __ip_vs_lblc_initEric W. Biederman1-1/+1
In (464dc801c76a net: Don't export sysctls to unprivileged users) I typoed and introduced a spurious backslash. Delete it. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-19qeth: Remove BUG_ONsStefan Raspl3-14/+10
Remove BUG_ONs or convert to WARN_ON_ONCE/WARN_ONs since a failure within a networking device driver is no reason to shut down the entire machine. Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-19qeth: Consolidate tracing of card featuresStefan Raspl4-3/+16
Trace all supported and enabled card features to s390dbf. Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-19qeth: Clarify card type naming for virtual NICsStefan Raspl1-8/+8
So far, virtual NICs whether attached to a VSWITCH or a guest LAN were always displayed as guest LANs in the device driver attributes and messages, while in fact it is a virtual NIC. Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-19claw: remove BUG_ONsUrsula Braun1-2/+0
Remove BUG_ON's in claw driver, since the checked error conditions are null pointer accesses. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-19ctcm: remove BUG_ONsUrsula Braun2-5/+0
Remove BUG_ON's in ctcm driver, since the checked error conditions are null pointer accesses. Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-19qeth: Remove unused variableStefan Raspl1-2/+1
Eliminate a variable that is never modified. Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com> Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com> Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-19net: Allow userns root to control tun and tap devicesEric W. Biederman1-2/+3
Allow an unpriviled user who has created a user namespace, and then created a network namespace to effectively use the new network namespace, by reducing capable(CAP_NET_ADMIN) calls to ns_capable(net->user_ns,CAP_NET_ADMIN) calls. Allow setting of the tun iff flags. Allow creating of tun devices. Allow adding a new queue to a tun device. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18net: Make CAP_NET_BIND_SERVICE per user namespaceEric W. Biederman3-6/+10
Allow privileged users in any user namespace to bind to privileged sockets in network namespaces they control. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18net: Enable a userns root rtnl calls that are safe for unprivilged usersEric W. Biederman9-54/+4
- Only allow moving network devices to network namespaces you have CAP_NET_ADMIN privileges over. - Enable creating/deleting/modifying interfaces - Enable adding/deleting addresses - Enable adding/setting/deleting neighbour entries - Enable adding/removing routes - Enable adding/removing fib rules - Enable setting the forwarding state - Enable adding/removing ipv6 address labels - Enable setting bridge parameter Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18net: Enable some sysctls that are safe for the userns rootEric W. Biederman4-22/+1
- Enable the per device ipv4 sysctls: net/ipv4/conf/<if>/forwarding net/ipv4/conf/<if>/mc_forwarding net/ipv4/conf/<if>/accept_redirects net/ipv4/conf/<if>/secure_redirects net/ipv4/conf/<if>/shared_media net/ipv4/conf/<if>/rp_filter net/ipv4/conf/<if>/send_redirects net/ipv4/conf/<if>/accept_source_route net/ipv4/conf/<if>/accept_local net/ipv4/conf/<if>/src_valid_mark net/ipv4/conf/<if>/proxy_arp net/ipv4/conf/<if>/medium_id net/ipv4/conf/<if>/bootp_relay net/ipv4/conf/<if>/log_martians net/ipv4/conf/<if>/tag net/ipv4/conf/<if>/arp_filter net/ipv4/conf/<if>/arp_announce net/ipv4/conf/<if>/arp_ignore net/ipv4/conf/<if>/arp_accept net/ipv4/conf/<if>/arp_notify net/ipv4/conf/<if>/proxy_arp_pvlan net/ipv4/conf/<if>/disable_xfrm net/ipv4/conf/<if>/disable_policy net/ipv4/conf/<if>/force_igmp_version net/ipv4/conf/<if>/promote_secondaries net/ipv4/conf/<if>/route_localnet - Enable the global ipv4 sysctl: net/ipv4/ip_forward - Enable the per device ipv6 sysctls: net/ipv6/conf/<if>/forwarding net/ipv6/conf/<if>/hop_limit net/ipv6/conf/<if>/mtu net/ipv6/conf/<if>/accept_ra net/ipv6/conf/<if>/accept_redirects net/ipv6/conf/<if>/autoconf net/ipv6/conf/<if>/dad_transmits net/ipv6/conf/<if>/router_solicitations net/ipv6/conf/<if>/router_solicitation_interval net/ipv6/conf/<if>/router_solicitation_delay net/ipv6/conf/<if>/force_mld_version net/ipv6/conf/<if>/use_tempaddr net/ipv6/conf/<if>/temp_valid_lft net/ipv6/conf/<if>/temp_prefered_lft net/ipv6/conf/<if>/regen_max_retry net/ipv6/conf/<if>/max_desync_factor net/ipv6/conf/<if>/max_addresses net/ipv6/conf/<if>/accept_ra_defrtr net/ipv6/conf/<if>/accept_ra_pinfo net/ipv6/conf/<if>/accept_ra_rtr_pref net/ipv6/conf/<if>/router_probe_interval net/ipv6/conf/<if>/accept_ra_rt_info_max_plen net/ipv6/conf/<if>/proxy_ndp net/ipv6/conf/<if>/accept_source_route net/ipv6/conf/<if>/optimistic_dad net/ipv6/conf/<if>/mc_forwarding net/ipv6/conf/<if>/disable_ipv6 net/ipv6/conf/<if>/accept_dad net/ipv6/conf/<if>/force_tllao - Enable the global ipv6 sysctls: net/ipv6/bindv6only net/ipv6/icmp/ratelimit Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18net: Allow the userns root to control vlans.Eric W. Biederman1-6/+6
Allow an unpriviled user who has created a user namespace, and then created a network namespace to effectively use the new network namespace, by reducing capable(CAP_NET_ADMIN) and capable(CAP_NET_RAW) calls to be ns_capable(net->user_ns, CAP_NET_ADMIN), or capable(net->user_ns, CAP_NET_RAW) calls. Allow the vlan ioctls: SET_VLAN_INGRESS_PRIORITY_CMD SET_VLAN_EGRESS_PRIORITY_CMD SET_VLAN_FLAG_CMD SET_VLAN_NAME_TYPE_CMD ADD_VLAN_CMD DEL_VLAN_CMD Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18net: Allow userns root to control the network bridge code.Eric W. Biederman3-18/+19
Allow an unpriviled user who has created a user namespace, and then created a network namespace to effectively use the new network namespace, by reducing capable(CAP_NET_ADMIN) and capable(CAP_NET_RAW) calls to be ns_capable(net->user_ns, CAP_NET_ADMIN), or capable(net->user_ns, CAP_NET_RAW) calls. Allow setting bridge paramters via sysfs. Allow all of the bridge ioctls: BRCTL_ADD_IF BRCTL_DEL_IF BRCTL_SET_BRDIGE_FORWARD_DELAY BRCTL_SET_BRIDGE_HELLO_TIME BRCTL_SET_BRIDGE_MAX_AGE BRCTL_SET_BRIDGE_AGING_TIME BRCTL_SET_BRIDGE_STP_STATE BRCTL_SET_BRIDGE_PRIORITY BRCTL_SET_PORT_PRIORITY BRCTL_SET_PATH_COST BRCTL_ADD_BRIDGE BRCTL_DEL_BRDIGE Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18net: Allow userns root to control llc, netfilter, netlink, packet, and xfrmEric W. Biederman8-9/+9
Allow an unpriviled user who has created a user namespace, and then created a network namespace to effectively use the new network namespace, by reducing capable(CAP_NET_ADMIN) and capable(CAP_NET_RAW) calls to be ns_capable(net->user_ns, CAP_NET_ADMIN), or capable(net->user_ns, CAP_NET_RAW) calls. Allow creation of af_key sockets. Allow creation of llc sockets. Allow creation of af_packet sockets. Allow sending xfrm netlink control messages. Allow binding to netlink multicast groups. Allow sending to netlink multicast groups. Allow adding and dropping netlink multicast groups. Allow sending to all netlink multicast groups and port ids. Allow reading the netfilter SO_IP_SET socket option. Allow sending netfilter netlink messages. Allow setting and getting ip_vs netfilter socket options. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18net: Allow userns root to control ipv6Eric W. Biederman12-25/+28
Allow an unpriviled user who has created a user namespace, and then created a network namespace to effectively use the new network namespace, by reducing capable(CAP_NET_ADMIN) and capable(CAP_NET_RAW) calls to be ns_capable(net->user_ns, CAP_NET_ADMIN), or capable(net->user_ns, CAP_NET_RAW) calls. Settings that merely control a single network device are allowed. Either the network device is a logical network device where restrictions make no difference or the network device is hardware NIC that has been explicity moved from the initial network namespace. In general policy and network stack state changes are allowed while resource control is left unchanged. Allow the SIOCSIFADDR ioctl to add ipv6 addresses. Allow the SIOCDIFADDR ioctl to delete ipv6 addresses. Allow the SIOCADDRT ioctl to add ipv6 routes. Allow the SIOCDELRT ioctl to delete ipv6 routes. Allow creation of ipv6 raw sockets. Allow setting the IPV6_JOIN_ANYCAST socket option. Allow setting the IPV6_FL_A_RENEW parameter of the IPV6_FLOWLABEL_MGR socket option. Allow setting the IPV6_TRANSPARENT socket option. Allow setting the IPV6_HOPOPTS socket option. Allow setting the IPV6_RTHDRDSTOPTS socket option. Allow setting the IPV6_DSTOPTS socket option. Allow setting the IPV6_IPSEC_POLICY socket option. Allow setting the IPV6_XFRM_POLICY socket option. Allow sending packets with the IPV6_2292HOPOPTS control message. Allow sending packets with the IPV6_2292DSTOPTS control message. Allow sending packets with the IPV6_RTHDRDSTOPTS control message. Allow setting the multicast routing socket options on non multicast routing sockets. Allow the SIOCADDTUNNEL, SIOCCHGTUNNEL, and SIOCDELTUNNEL ioctls for setting up, changing and deleting tunnels over ipv6. Allow the SIOCADDTUNNEL, SIOCCHGTUNNEL, SIOCDELTUNNEL ioctls for setting up, changing and deleting ipv6 over ipv4 tunnels. Allow the SIOCADDPRL, SIOCDELPRL, SIOCCHGPRL ioctls for adding, deleting, and changing the potential router list for ISATAP tunnels. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18net: Allow userns root to control ipv4Eric W. Biederman14-27/+30
Allow an unpriviled user who has created a user namespace, and then created a network namespace to effectively use the new network namespace, by reducing capable(CAP_NET_ADMIN) and capable(CAP_NET_RAW) calls to be ns_capable(net->user_ns, CAP_NET_ADMIN), or capable(net->user_ns, CAP_NET_RAW) calls. Settings that merely control a single network device are allowed. Either the network device is a logical network device where restrictions make no difference or the network device is hardware NIC that has been explicity moved from the initial network namespace. In general policy and network stack state changes are allowed while resource control is left unchanged. Allow creating raw sockets. Allow the SIOCSARP ioctl to control the arp cache. Allow the SIOCSIFFLAG ioctl to allow setting network device flags. Allow the SIOCSIFADDR ioctl to allow setting a netdevice ipv4 address. Allow the SIOCSIFBRDADDR ioctl to allow setting a netdevice ipv4 broadcast address. Allow the SIOCSIFDSTADDR ioctl to allow setting a netdevice ipv4 destination address. Allow the SIOCSIFNETMASK ioctl to allow setting a netdevice ipv4 netmask. Allow the SIOCADDRT and SIOCDELRT ioctls to allow adding and deleting ipv4 routes. Allow the SIOCADDTUNNEL, SIOCCHGTUNNEL and SIOCDELTUNNEL ioctls for adding, changing and deleting gre tunnels. Allow the SIOCADDTUNNEL, SIOCCHGTUNNEL and SIOCDELTUNNEL ioctls for adding, changing and deleting ipip tunnels. Allow the SIOCADDTUNNEL, SIOCCHGTUNNEL and SIOCDELTUNNEL ioctls for adding, changing and deleting ipsec virtual tunnel interfaces. Allow setting the MRT_INIT, MRT_DONE, MRT_ADD_VIF, MRT_DEL_VIF, MRT_ADD_MFC, MRT_DEL_MFC, MRT_ASSERT, MRT_PIM, MRT_TABLE socket options on multicast routing sockets. Allow setting and receiving IPOPT_CIPSO, IP_OPT_SEC, IP_OPT_SID and arbitrary ip options. Allow setting IP_SEC_POLICY/IP_XFRM_POLICY ipv4 socket option. Allow setting the IP_TRANSPARENT ipv4 socket option. Allow setting the TCP_REPAIR socket option. Allow setting the TCP_CONGESTION socket option. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18net: Allow userns root control of the core of the network stack.Eric W. Biederman4-13/+28
Allow an unpriviled user who has created a user namespace, and then created a network namespace to effectively use the new network namespace, by reducing capable(CAP_NET_ADMIN) and capable(CAP_NET_RAW) calls to be ns_capable(net->user_ns, CAP_NET_ADMIN), or capable(net->user_ns, CAP_NET_RAW) calls. Settings that merely control a single network device are allowed. Either the network device is a logical network device where restrictions make no difference or the network device is hardware NIC that has been explicity moved from the initial network namespace. In general policy and network stack state changes are allowed while resource control is left unchanged. Allow ethtool ioctls. Allow binding to network devices. Allow setting the socket mark. Allow setting the socket priority. Allow setting the network device alias via sysfs. Allow setting the mtu via sysfs. Allow changing the network device flags via sysfs. Allow setting the network device group via sysfs. Allow the following network device ioctls. SIOCGMIIPHY SIOCGMIIREG SIOCSIFNAME SIOCSIFFLAGS SIOCSIFMETRIC SIOCSIFMTU SIOCSIFHWADDR SIOCSIFSLAVE SIOCADDMULTI SIOCDELMULTI SIOCSIFHWBROADCAST SIOCSMIIREG SIOCBONDENSLAVE SIOCBONDRELEASE SIOCBONDSETHWADDR SIOCBONDCHANGEACTIVE SIOCBRADDIF SIOCBRDELIF SIOCSHWTSTAMP Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18net: Allow userns root to force the scm credsEric W. Biederman1-3/+3
If the user calling sendmsg has the appropriate privieleges in their user namespace allow them to set the uid, gid, and pid in the SCM_CREDENTIALS control message to any valid value. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18user_ns: get rid of duplicate code in net_ctl_permissionsZhao Hongjiang1-2/+2
Get rid of duplicate code in net_ctl_permissions and fix the comment. Signed-off-by: Zhao Hongjiang <zhaohongjiang@huawei.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18net: Update the per network namespace sysctls to be available to the network namespace ownerEric W. Biederman1-1/+11
- Allow anyone with CAP_NET_ADMIN rights in the user namespace of the the netowrk namespace to change sysctls. - Allow anyone the uid of the user namespace root the same permissions over the network namespace sysctls as the global root. - Allow anyone with gid of the user namespace root group the same permissions over the network namespace sysctl as the global root group. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18net: Push capable(CAP_NET_ADMIN) into the rtnl methodsEric W. Biederman17-1/+102
- In rtnetlink_rcv_msg convert the capable(CAP_NET_ADMIN) check to ns_capable(net->user-ns, CAP_NET_ADMIN). Allowing unprivileged users to make netlink calls to modify their local network namespace. - In the rtnetlink doit methods add capable(CAP_NET_ADMIN) so that calls that are not safe for unprivileged users are still protected. Later patches will remove the extra capable calls from methods that are safe for unprivilged users. Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18net: Don't export sysctls to unprivileged usersEric W. Biederman22-4/+98
In preparation for supporting the creation of network namespaces by unprivileged users, modify all of the per net sysctl exports and refuse to allow them to unprivileged users. This makes it safe for unprivileged users in general to access per net sysctls, and allows sysctls to be exported to unprivileged users on an individual basis as they are deemed safe. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18sysctl: Pass useful parameters to sysctl permissionsEric W. Biederman3-8/+7
- Current is implicitly avaiable so passing current->nsproxy isn't useful. - The ctl_table_header is needed to find how the sysctl table is connected to the rest of sysctl. - ctl_table_root is avaiable in the ctl_table_header so no need to it. With these changes it becomes possible to write a version of net_sysctl_permission that takes into account the network namespace of the sysctl table, an important feature in extending the user namespace. Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18userns: make each net (net_ns) belong to a user_nsEric W. Biederman3-7/+20
The user namespace which creates a new network namespace owns that namespace and all resources created in it. This way we can target capability checks for privileged operations against network resources to the user_ns which created the network namespace in which the resource lives. Privilege to the user namespace which owns the network namespace, or any parent user namespace thereof, provides the same privilege to the network resource. This patch is reworked from a version originally by Serge E. Hallyn <serge.hallyn@canonical.com> Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18netns: Deduplicate and fix copy_net_ns when !CONFIG_NET_NSEric W. Biederman2-13/+9
The copy of copy_net_ns used when the network stack is not built is broken as it does not return -EINVAL when attempting to create a new network namespace. We don't even have a previous network namespace. Since we need a copy of copy_net_ns in net/net_namespace.h that is available when the networking stack is not built at all move the correct version of copy_net_ns from net_namespace.c into net_namespace.h Leaving us with just 2 versions of copy_net_ns. One version for when we compile in network namespace suport and another stub for all other occasions. Acked-by: Serge Hallyn <serge.hallyn@canonical.com> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18ipv6: Preserve ipv6 functionality needed by NETVlad Yasevich2-3/+3
Some pieces of network use core pieces of IPv6 stack. Keep them available while letting new GSO offload pieces depend on CONFIG_INET. Signed-off-by: Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18qlcnic: fix sparse warningsSony Chacko3-53/+65
qlcnic_hw.c:1337:17: warning: cast removes address space of expression qlcnic_hw.c:1337:17: warning: incorrect type in argument 2 (different address spaces) qlcnic_hw.c:1337:17: expected void volatile [noderef] <asn:2>*addr qlcnic_hw.c:1337:17: got void *<noident> qlcnic_hw.c:1337:17: warning: cast removes address space of expression qlcnic_hw.c:1337:17: warning: incorrect type in argument 1 (different address spaces) qlcnic_hw.c:1337:17: expected void const volatile [noderef] <asn:2>*addr qlcnic_hw.c:1337:17: got void *<noident> The above warnings are originating from the macros QLCNIC_RD_DUMP_REG and QLCNIC_WR_DUMP_REG. The warnings are fixed and macros are replaced with equivalent functions in the only file from where it is called. The following warnings are fixed by making the functions static. qlcnic_hw.c:543:5: warning: symbol 'qlcnic_set_fw_loopback' was not declared. Should it be static? qlcnic_init.c:1853:6: warning: symbol 'qlcnic_process_rcv_diag' was not declared. Should it be static? Signed-off-by: Sony Chacko <sony.chacko@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-18qlcnic: fix compiler warningsSony Chacko5-25/+17
Fix the following warnings: qlcnic_main.c: In function 'qlcnic_update_cmd_producer': qlcnic_main.c:119:51: warning: unused parameter 'adapter' [-Wunused-parameter] qlcnic_main.c:119: warning: unused parameter adapter qlcnic_init.c: In function qlcnic_process_lro qlcnic_init.c:1586: warning: unused parameter sds_ring qlcnic_init.c: In function qlcnic_process_rcv_diag qlcnic_init.c:1854: warning: unused parameter sds_ring qlcnic_init.c: In function qlcnic_fetch_mac qlcnic_init.c:1938: warning: unused parameter adapter warning: 'pci_using_dac' may be used uninitialized in this function [-Wmaybe-uninitialized] qlcnic_main.c:1569:10: note: 'pci_using_dac' was declared here Signed-off-by: Sony Chacko <sony.chacko@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-17PPC: net: bpf_jit_comp: add VLAN instructions for BPF JITDaniel Borkmann1-0/+14
This patch is a follow-up for patch "net: filter: add vlan tag access" to support the new VLAN_TAG/VLAN_TAG_PRESENT accessors in BPF JIT. Signed-off-by: Daniel Borkmann <daniel.borkmann@tik.ee.ethz.ch> Cc: Matt Evans <matt@ozlabs.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Matt Evans <matt@ozlabs.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-17PPC: net: bpf_jit_comp: add XOR instruction for BPF JITDaniel Borkmann3-0/+20
This patch is a follow-up for patch "filter: add XOR instruction for use with X/K" that implements BPF PowerPC JIT parts for the BPF XOR operation. Signed-off-by: Daniel Borkmann <daniel.borkmann@tik.ee.ethz.ch> Cc: Matt Evans <matt@ozlabs.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Matt Evans <matt@ozlabs.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-17pch_gbe, ptp_pch: Fix the dependency direction between these driversBen Hutchings2-2/+1
In commit a24006ed12616bde1bbdb26868495906a212d8dc ('ptp: Enable clock drivers along with associated net/PHY drivers') I wrongly made PTP_1588_CLOCK_PCH depend on PCH_GBE. The dependency is really the other way around. Therefore make PCH_GBE select PTP_1588_CLOCK_PCH and remove the 'default y' from the latter. Reported-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Acked-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-17vxlan: remove unused variable.Rami Rosen1-1/+0
This patch removes addrexceeded member from vxlan_dev struct as it is unused. Signed-off-by: Rami Rosen <ramirose@gmail.com> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-17sctp: use bitmap_weightAkinobu Mita1-6/+2
Use bitmap_weight to count the total number of bits set in bitmap. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Vlad Yasevich <vyasevich@gmail.com> Cc: Sridhar Samudrala <sri@us.ibm.com> Cc: linux-sctp@vger.kernel.org Cc: netdev@vger.kernel.org Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-16Linux 3.7-rc6Linus Torvalds1-1/+1
2012-11-16revert "mm: fix-up zone present pages"Andrew Morton6-58/+1
Revert commit 7f1290f2f2a4 ("mm: fix-up zone present pages") That patch tried to fix a issue when calculating zone->present_pages, but it caused a regression on 32bit systems with HIGHMEM. With that change, reset_zone_present_pages() resets all zone->present_pages to zero, and fixup_zone_present_pages() is called to recalculate zone->present_pages when the boot allocator frees core memory pages into buddy allocator. Because highmem pages are not freed by bootmem allocator, all highmem zones' present_pages becomes zero. Various options for improving the situation are being discussed but for now, let's return to the 3.6 code. Cc: Jianguo Wu <wujianguo@huawei.com> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Petr Tesarik <ptesarik@suse.cz> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Minchan Kim <minchan.kim@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Acked-by: David Rientjes <rientjes@google.com> Tested-by: Chris Clayton <chris2553@googlemail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-11-16tmpfs: change final i_blocks BUG to WARNINGHugh Dickins1-1/+1
Under a particular load on one machine, I have hit shmem_evict_inode()'s BUG_ON(inode->i_blocks), enough times to narrow it down to a particular race between swapout and eviction. It comes from the "if (freed > 0)" asymmetry in shmem_recalc_inode(), and the lack of coherent locking between mapping's nrpages and shmem's swapped count. There's a window in shmem_writepage(), between lowering nrpages in shmem_delete_from_page_cache() and then raising swapped count, when the freed count appears to be +1 when it should be 0, and then the asymmetry stops it from being corrected with -1 before hitting the BUG. One answer is coherent locking: using tree_lock throughout, without info->lock; reasonable, but the raw_spin_lock in percpu_counter_add() on used_blocks makes that messier than expected. Another answer may be a further effort to eliminate the weird shmem_recalc_inode() altogether, but previous attempts at that failed. So far undecided, but for now change the BUG_ON to WARN_ON: in usual circumstances it remains a useful consistency check. Signed-off-by: Hugh Dickins <hughd@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-11-16tmpfs: fix shmem_getpage_gfp() VM_BUG_ONHugh Dickins1-2/+14
Fuzzing with trinity hit the "impossible" VM_BUG_ON(error) (which Fedora has converted to WARNING) in shmem_getpage_gfp(): WARNING: at mm/shmem.c:1151 shmem_getpage_gfp+0xa5c/0xa70() Pid: 29795, comm: trinity-child4 Not tainted 3.7.0-rc2+ #49 Call Trace: warn_slowpath_common+0x7f/0xc0 warn_slowpath_null+0x1a/0x20 shmem_getpage_gfp+0xa5c/0xa70 shmem_fault+0x4f/0xa0 __do_fault+0x71/0x5c0 handle_pte_fault+0x97/0xae0 handle_mm_fault+0x289/0x350 __do_page_fault+0x18e/0x530 do_page_fault+0x2b/0x50 page_fault+0x28/0x30 tracesys+0xe1/0xe6 Thanks to Johannes for pointing to truncation: free_swap_and_cache() only does a trylock on the page, so the page lock we've held since before confirming swap is not enough to protect against truncation. What cleanup is needed in this case? Just delete_from_swap_cache(), which takes care of the memcg uncharge. Signed-off-by: Hugh Dickins <hughd@google.com> Reported-by: Dave Jones <davej@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-11-16mm: highmem: don't treat PKMAP_ADDR(LAST_PKMAP) as a highmem addressWill Deacon1-1/+1
kmap_to_page returns the corresponding struct page for a virtual address of an arbitrary mapping. This works by checking whether the address falls in the pkmap region and using the pkmap page tables instead of the linear mapping if appropriate. Unfortunately, the bounds checking means that PKMAP_ADDR(LAST_PKMAP) is incorrectly treated as a highmem address and we can end up walking off the end of pkmap_page_table and subsequently passing junk to pte_page. This patch fixes the bound check to stay within the pkmap tables. Signed-off-by: Will Deacon <will.deacon@arm.com> Cc: Mel Gorman <mgorman@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-11-16mm: revert "mm: vmscan: scale number of pages reclaimed by reclaim/compaction based on failures"Mel Gorman1-25/+0
Jiri Slaby reported the following: (It's an effective revert of "mm: vmscan: scale number of pages reclaimed by reclaim/compaction based on failures".) Given kswapd had hours of runtime in ps/top output yesterday in the morning and after the revert it's now 2 minutes in sum for the last 24h, I would say, it's gone. The intention of the patch in question was to compensate for the loss of lumpy reclaim. Part of the reason lumpy reclaim worked is because it aggressively reclaimed pages and this patch was meant to be a sane compromise. When compaction fails, it gets deferred and both compaction and reclaim/compaction is deferred avoid excessive reclaim. However, since commit c654345924f7 ("mm: remove __GFP_NO_KSWAPD"), kswapd is woken up each time and continues reclaiming which was not taken into account when the patch was developed. Attempts to address the problem ended up just changing the shape of the problem instead of fixing it. The release window gets closer and while a THP allocation failing is not a major problem, kswapd chewing up a lot of CPU is. This patch reverts commit 83fde0f22872 ("mm: vmscan: scale number of pages reclaimed by reclaim/compaction based on failures") and will be revisited in the future. Signed-off-by: Mel Gorman <mgorman@suse.de> Cc: Zdenek Kabelac <zkabelac@redhat.com> Tested-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Cc: Jiri Slaby <jirislaby@gmail.com> Cc: Rik van Riel <riel@redhat.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Johannes Hirte <johannes.hirte@fem.tu-ilmenau.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-11-16rapidio: fix kernel-doc warningsRandy Dunlap2-1/+3
Fix rapidio kernel-doc warnings: Warning(drivers/rapidio/rio.c:415): No description found for parameter 'local' Warning(drivers/rapidio/rio.c:415): Excess function parameter 'lstart' description in 'rio_map_inb_region' Warning(include/linux/rio.h:290): No description found for parameter 'switches' Warning(include/linux/rio.h:290): No description found for parameter 'destid_table' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Matt Porter <mporter@kernel.crashing.org> Acked-by: Alexandre Bounine <alexandre.bounine@idt.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-11-16swapfile: fix name leak in swapoffXiaotian Feng1-2/+2
There's a name leak introduced by commit 91a27b2a7567 ("vfs: define struct filename and have getname() return it"). Add the missing putname. [akpm@linux-foundation.org: cleanup] Signed-off-by: Xiaotian Feng <dannyfeng@tencent.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-11-16memcg: fix hotplugged memory zone oopsHugh Dickins4-18/+38
When MEMCG is configured on (even when it's disabled by boot option), when adding or removing a page to/from its lru list, the zone pointer used for stats updates is nowadays taken from the struct lruvec. (On many configurations, calculating zone from page is slower.) But we have no code to update all the lruvecs (per zone, per memcg) when a memory node is hotadded. Here's an extract from the oops which results when running numactl to bind a program to a newly onlined node: BUG: unable to handle kernel NULL pointer dereference at 0000000000000f60 IP: __mod_zone_page_state+0x9/0x60 Pid: 1219, comm: numactl Not tainted 3.6.0-rc5+ #180 Bochs Bochs Process numactl (pid: 1219, threadinfo ffff880039abc000, task ffff8800383c4ce0) Call Trace: __pagevec_lru_add_fn+0xdf/0x140 pagevec_lru_move_fn+0xb1/0x100 __pagevec_lru_add+0x1c/0x30 lru_add_drain_cpu+0xa3/0x130 lru_add_drain+0x2f/0x40 ... The natural solution might be to use a memcg callback whenever memory is hotadded; but that solution has not been scoped out, and it happens that we do have an easy location at which to update lruvec->zone. The lruvec pointer is discovered either by mem_cgroup_zone_lruvec() or by mem_cgroup_page_lruvec(), and both of those do know the right zone. So check and set lruvec->zone in those; and remove the inadequate attempt to set lruvec->zone from lruvec_init(), which is called before NODE_DATA(node) has been allocated in such cases. Ah, there was one exceptionr. For no particularly good reason, mem_cgroup_force_empty_list() has its own code for deciding lruvec. Change it to use the standard mem_cgroup_zone_lruvec() and mem_cgroup_get_lru_size() too. In fact it was already safe against such an oops (the lru lists in danger could only be empty), but we're better proofed against future changes this way. I've marked this for stable (3.6) since we introduced the problem in 3.5 (now closed to stable); but I have no idea if this is the only fix needed to get memory hotadd working with memcg in 3.6, and received no answer when I enquired twice before. Reported-by: Tang Chen <tangchen@cn.fujitsu.com> Signed-off-by: Hugh Dickins <hughd@google.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Konstantin Khlebnikov <khlebnikov@openvz.org> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-11-16mips, arc: fix build failureDavid Rientjes1-0/+1
Using a cross-compiler to fix another issue, the following build error occurred for mips defconfig: arch/mips/fw/arc/misc.c: In function 'ArcHalt': arch/mips/fw/arc/misc.c:25:2: error: implicit declaration of function 'local_irq_disable' Fix it up by including irqflags.h. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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