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2011-12-09udp_diag: Implement the dump-all functionalityPavel Emelyanov1-0/+54
Do the same as TCP does -- iterate the given udp_table, filter sockets with bytecode and dump sockets into reply message. The same filtering as for TCP applies, though only some of the state bits really matter. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-09udp_diag: Implement the get_exact dumping functionalityPavel Emelyanov1-1/+51
Do the same as TCP does -- lookup a socket in the given udp_table, check cookie, fill the reply message with existing inet socket dumping helper and send one back. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-09udp_diag: Basic skeletonPavel Emelyanov1-0/+95
Introduce the transport level diag handler module for UDP (and UDP-lite) sockets and register (empty for now) callbacks in the inet_diag module. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-09udp: Export code sk lookup routinesPavel Emelyanov2-2/+4
The UDP diag get_exact handler will require them to find a socket by provided net, [sd]addr-s, [sd]ports and device. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-09inet_diag: Generalize inet_diag dump and get_exact callsPavel Emelyanov3-7/+34
Introduce two callbacks in inet_diag_handler -- one for dumping all sockets (with filters) and the other one for dumping a single sk. Replace direct calls to icsk handlers with indirect calls to callbacks provided by handlers. Make existing TCP and DCCP handlers use provided helpers for icsk-s. The UDP diag module will provide its own. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-09inet_diag: Introduce the inet socket dumping routinePavel Emelyanov1-19/+34
The existing inet_csk_diag_fill dumps the inet connection sock info into the netlink inet_diag_message. Prepare this routine to be able to dump only the inet_sock part of a socket if the icsk part is missing. This will be used by UDP diag module when dumping UDP sockets. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-09inet_diag: Introduce the byte-code run on an inet socketPavel Emelyanov1-24/+31
The upcoming UDP module will require exactly this ability, so just move the existing code to provide one. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-09inet_diag: Split inet_diag_get_exact into partsPavel Emelyanov1-12/+16
Similar to previous patch: the 1st part locks the inet handler and will get generalized and the 2nd one dumps icsk-s and will be used by TCP and DCCP handlers. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-09inet_diag: Split inet_diag_get_exact into partsPavel Emelyanov1-16/+22
The 1st part locks the inet handler and the 2nd one dump the inet connection sock. In the next patches the 1st part will be generalized to call the socket dumping routine indirectly (i.e. TCP/UDP/DCCP) and the 2nd part will be used by TCP and DCCP handlers. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-09inet_diag: Export inet diag cookie checking routinePavel Emelyanov1-5/+14
The netlink diag susbsys stores sk address bits in the nl message as a "cookie" and uses one when dumps details about particular socket. The same will be required for udp diag module, so introduce a heler in inet_diag module Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-09inet_diag: Reduce the number of args for bytecode run routinePavel Emelyanov1-6/+8
Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-09inet_diag: Remove indirect sizeof from inet diag handlersPavel Emelyanov3-5/+2
There's an info_size value stored on inet_diag_handler, but for existing code this value is effectively constant, so just use sizeof(struct tcp_info) where required. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-09sch_red: generalize accurate MAX_P support to RED/GRED/CHOKEEric Dumazet3-7/+32
Now RED uses a Q0.32 number to store max_p (max probability), allow RED/GRED/CHOKE to use/report full resolution at config/dump time. Old tc binaries are non aware of new attributes, and still set/get Plog. New tc binary set/get both Plog and max_p for backward compatibility, they display "probability value" if they get max_p from new kernels. # tc -d qdisc show dev ... ... qdisc red 10: parent 1:1 limit 360Kb min 30Kb max 90Kb ecn ewma 5 probability 0.09 Scell_log 15 Make sure we avoid potential divides by 0 in reciprocal_value(), if (max_th - min_th) is big. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-09Revert "net: netprio_cgroup: make net_prio_subsys static"John Fastabend1-1/+1
This reverts commit 865d9f9f748fdc1943679ea65d9ee1dc55e4a6ae. This commit breaks the build with CONFIG_NETPRIO_CGROUP=y so revert it. It does build as a module though. The SUBSYS macro in the cgroup core code automatically defines a subsys structure as extern. Long term we should fix the macro. And I need to fully build test things. Tested with CONFIG_NETPRIO_CGROUP={y|m|n} with and without CONFIG_CGROUPS defined. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> CC: Neil Horman <nhorman@tuxdriver.com> Reported-By: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-08sock_diag: off by one checksDan Carpenter1-2/+2
These tests are off by one because sock_diag_handlers[] only has AF_MAX elements. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-08net: netprio_cgroup: make net_prio_subsys staticJohn Fastabend1-1/+1
net_prio_subsys can be made static this removes the sparse warning it was throwing. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-08vlan: add 802.1q netpoll supportBenjamin LaHaise2-0/+64
Add netpoll support to 802.1q vlan devices. Based on the netpoll support in the bridging code. Tested on a forced_eth device with netconsole. Signed-off-by: Benjamin LaHaise <bcrl@kvack.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-08sch_red: Adaptative RED AQMEric Dumazet1-0/+21
Adaptative RED AQM for linux, based on paper from Sally FLoyd, Ramakrishna Gummadi, and Scott Shenker, August 2001 : http://icir.org/floyd/papers/adaptiveRed.pdf Goal of Adaptative RED is to make max_p a dynamic value between 1% and 50% to reach the target average queue : (max_th - min_th) / 2 Every 500 ms: if (avg > target and max_p <= 0.5) increase max_p : max_p += alpha; else if (avg < target and max_p >= 0.01) decrease max_p : max_p *= beta; target :[min_th + 0.4*(min_th - max_th), min_th + 0.6*(min_th - max_th)]. alpha : min(0.01, max_p / 4) beta : 0.9 max_P is a Q0.32 fixed point number (unsigned, with 32 bits mantissa) Changes against our RED implementation are : max_p is no longer a negative power of two (1/(2^Plog)), but a Q0.32 fixed point number, to allow full range described in Adatative paper. To deliver a random number, we now use a reciprocal divide (thats really a multiply), but this operation is done once per marked/droped packet when in RED_BETWEEN_TRESH window, so added cost (compared to previous AND operation) is near zero. dump operation gives current max_p value in a new TCA_RED_MAX_P attribute. Example on a 10Mbit link : tc qdisc add dev $DEV parent 1:1 handle 10: est 1sec 8sec red \ limit 400000 min 30000 max 90000 avpkt 1000 \ burst 55 ecn adaptative bandwidth 10Mbit # tc -s -d qdisc show dev eth3 ... qdisc red 10: parent 1:1 limit 400000b min 30000b max 90000b ecn adaptative ewma 5 max_p=0.113335 Scell_log 15 Sent 50414282 bytes 34504 pkt (dropped 35, overlimits 1392 requeues 0) rate 9749Kbit 831pps backlog 72056b 16p requeues 0 marked 1357 early 35 pdrop 0 other 0 Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-08vlan: introduce functions to do mass addition/deletion of vids by another deviceJiri Pirko1-0/+44
Introduce functions handy to copy vlan ids from one driver's list to another. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-08vlan: introduce vid list with reference countingJiri Pirko3-71/+217
This allows to keep track of vids needed to be in rx vlan filters of devices even if they are used in bond/team etc. vlan_info as well as vlan_group previously was, is allocated when first vid is added and dealocated whan last vid is deleted. vlan_group definition is moved to private header. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-08net: introduce vlan_vid_[add/del] and use them instead of direct ↵Jiri Pirko2-9/+28
[add/kill]_vid ndo calls This patch adds wrapper for ndo_vlan_rx_add_vid/ndo_vlan_rx_kill_vid functions. Check for NETIF_F_HW_VLAN_FILTER feature is done in this wrapper. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-08vlan: rename vlan_dev_info to vlan_dev_privJiri Pirko7-84/+84
As this structure is priv, name it approprietely. Also for pointer to it use name "vlan". Signed-off-by: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-08bridge: add local MAC address to forwarding table (v2)stephen hemminger4-5/+25
If user has configured a MAC address that is not one of the existing ports of the bridge, then we need to add a special entry in the forwarding table. This forwarding table entry has no outgoing port so it has to be treated a little differently. The special entry is reported by the netlink interface with ifindex of bridge, but ignored by the old interface since there is no usable way to put it in the ABI. Reported-by: Koki Sanagi <sanagi.koki@jp.fujitsu.com> Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-08bridge: rearrange fdb notifications (v2)stephen hemminger1-19/+20
Pass bridge to fdb_notify so it can determine correct namespace based on namespace of bridge rather than namespace of destination port. Also makes next patch easier. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-08bridge: refactor fdb_notifystephen hemminger1-4/+7
Move fdb_notify outside of fdb_create. This fixes the problem that notification of local entries are not flagged correctly. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller3-31/+25
2011-12-06caif: Replace BUG_ON with WARN_ON.Roar Førde1-6/+4
BUG_ON is too strict in a number of circumstances, use WARN_ON instead. Protocol errors should not halt the system. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06caif: Bad assert triggering false positive.sjur.brandeland@stericsson.com1-1/+1
Fix bad assert on fragment size triggering false positive. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06ipv6: Move xfrm_lookup() call down into icmp6_dst_alloc().David S. Miller3-28/+11
And return error pointers. Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06ipv6: Make third arg to anycast_dst_alloc() bool.David S. Miller3-3/+3
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06net: Silence seq_scale() unused warningStephen Boyd1-0/+2
On a CONFIG_NET=y build net/core/secure_seq.c:22: warning: 'seq_scale' defined but not used Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06sock_diag: Move the sock_ code to net/core/Pavel Emelyanov3-100/+158
This patch moves the sock_ code from inet_diag.c to generic sock_diag.c file and provides necessary request_module-s calls and a pointer on inet_diag_compat dumping routine. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06inet_diag: Cleanup type2proto last userPavel Emelyanov1-23/+24
Now all the code works with sock_diag_req-compatible structs, so it's possible to stop using the inet_diag_type2proto in inet_csk_diag_fill. Pass the inet_diag_req into it and use the sdiag_protocol field. At the same time remove the explicit ext argument, since it's also on the req. However, this conversion is still required in _compat code, so just move this routine, not remove. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06inet_diag: Introduce socket family checksPavel Emelyanov1-1/+11
The new API will specify family to work with. Teach the existing socket walking code to bypass not interesting ones. To preserve compatibility with existing behavior the _compat code sets interesting family to AF_UNSPEC to dump them all. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06inet_diag: Switch the _dump to work with new headerPavel Emelyanov1-18/+53
Make inet_diag_dumo work with given header instead of calculating one from the nl message. The SOCK_DIAG_BY_FAMILY just passes skb's one through, the compat code converts the old header to new one. Also fix the bytecode calculation to find one at proper offset. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06inet_diag: Switch the _get_exact to work with new headerPavel Emelyanov1-7/+22
Make inet_diag_get_exact work with given header instead of calculating one from the nl message. The SOCK_DIAG_BY_FAMILY just passes skb's one through, the compat code converts the old header to new one. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06inet_diag: Introduce new inet_diag_req headerPavel Emelyanov1-7/+7
This one coinsides with the sock_diag_req in the beginning and contains only used fields from its previous analogue. The existing code is patched to use the _compat version of it for now. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06sock_diag: Initial skeletonPavel Emelyanov1-2/+100
When receiving the SOCK_DIAG_BY_FAMILY message we have to find the handler for provided family and pass the nl message to it. This patch describes an infrastructure to work with such nandlers and implements stubs for AF_INET(6) ones. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06inet_diag: Switch from _GETSOCK to IPPROTO_ numbersPavel Emelyanov3-15/+27
Sorry, but the vger didn't let this message go to the list. Re-sending it with less spam-filter-prone subject. When dumping the AF_INET/AF_INET6 sockets user will also specify the protocol, so prepare the protocol diag handlers to work with IPPROTO_ constants. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06inet_diag: Move byte-code finding up the call-stackPavel Emelyanov1-19/+17
Current code calculates it at fixed offset. This offset will change, so move the BC calculation upper to make the further patching simpler. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06sock_diag: Introduce new message typePavel Emelyanov1-2/+15
This type will run the family+protocol based socket dumping. Also prepare the stub function for it. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06inet_diag: Partly rename inet_ to sock_Pavel Emelyanov3-16/+21
The ultimate goal is to get the sock_diag module, that works in family+protocol terms. Currently this is suitable to do on the inet_diag basis, so rename parts of the code. It will be moved to sock_diag.c later. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06Merge branch 'for-davem' of ↵David S. Miller40-678/+565
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next
2011-12-06ipv4:correct description for tcp_max_syn_backlogPeter Pan(潘卫平)1-3/+4
Since commit c5ed63d66f24(tcp: fix three tcp sysctls tuning), sysctl_max_syn_backlog is determined by tcp_hashinfo->ehash_mask, and the minimal value is 128, and it will increase in proportion to the memory of machine. The original description for tcp_max_syn_backlog and sysctl_max_syn_backlog are out of date. Changelog: V2: update description for sysctl_max_syn_backlog Signed-off-by: Weiping Pan <panweiping3@gmail.com> Reviewed-by: Shan Wei <shanwei88@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06openvswitch: small potential memory leak in ovs_vport_alloc()Dan Carpenter1-1/+3
We're unlikely to hit this leak, but the static checkers complain if we don't take care of it. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Jesse Gross <jesse@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06Merge branch 'master' of ↵John W. Linville40-678/+565
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem
2011-12-06ipv4: arp: Cleanup in arp.cIgor Maravic1-10/+10
Use "IS_ENABLED(CONFIG_FOO)" macro instead of "defined(CONFIG_FOO) || defined(CONFIG_FOO_MODULE)" Signed-off-by: Igor Maravic <igorm@etf.rs> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-05tcp: remove TCP_OFF and TCP_PAGE macrosEric Dumazet1-13/+10
As mentioned by Joe Perches, TCP_OFF() and TCP_PAGE() macros are useless. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-05bql: fix CONFIG_XPS=n buildEric Dumazet1-2/+0
netdev_queue_release() should be called even if CONFIG_XPS=n to properly release device reference. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-05tcp: fix tcp_trim_head()Eric Dumazet1-5/+8
commit f07d960df3 (tcp: avoid frag allocation for small frames) breaked assumption in tcp stack that skb is either linear (skb->data_len == 0), or fully fragged (skb->data_len == skb->len) tcp_trim_head() made this assumption, we must fix it. Thanks to Vijay for providing a very detailed explanation. Reported-by: Vijay Subramanian <subramanian.vijay@gmail.com> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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