summaryrefslogtreecommitdiff
path: root/net
AgeCommit message (Collapse)Author
2012-07-12mac80211: add time synchronisation with BSS for assocJohannes Berg
Some drivers (iwlegacy, iwlwifi and rt2x00) today use the bss_conf.last_tsf value. By itself though that value is completely worthless since it may be ancient. What really is needed is synchronisation between some device time and the TSF. To clarify this, rename bss_conf.last_tsf to sync_tsf and add sync_device_ts which is obtained from rx_status which gets a new field device_timestamp for this purpose. This is intentionally not using the mactime field since that is used for other things and in IBSS is expected to sync with the IBSS's TSF which isn't necessarily true for the device timestamp. Also, since we have the information and it's useful even before the connection has been established, give all the timing details to the driver before authenticating. Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-12mac80211: redesign scan RXJohannes Berg
Scan receive is rather inefficient when there are multiple virtual interfaces. We iterate all of the virtual interfaces and then notify cfg80211 about each beacon many times. Redesign scan RX to happen before everything else. Then we can also get rid of IEEE80211_RX_IN_SCAN since we don't have to accept frames into the RX handlers for scanning or scheduled scanning any more. Overall, this simplifies the code. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-12mac80211: track scheduled scan virtual interfaceJohannes Berg
Instead of tracking whether or not we're in a scheduled scan, track the virtual interface (sdata) in an RCU-protected pointer to make it usable from RX to check the MAC address. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-12mac80211: make scan_sdata pointer usable with RCUJohannes Berg
Making the scan_sdata pointer usable with RCU makes it possible to dereference it in the RX path to see if a received frame actually matches the interface that is scanning. This is just preparations, making the pointer __rcu. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-12mac80211: fix invalid band deref building preq IEsArik Nemtsov
The function building probe-request IEs does not validate the band is supported before dereferencing it. This can result in a panic when all bands are traversed, as done during sched-scan start. Warn when this happens and return an empty probe request. Also fix sched-scan to not waste memory on unsupported bands. Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-12nl80211: move scan API to wdevJohannes Berg
The new P2P Device will have to be able to scan for P2P search, so move scanning to use struct wireless_dev instead of struct net_device. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-12nl80211: send interface after creationJohannes Berg
After a new virtual interface is created, reply to userspace with a message detailing it so it knows the new wdev identifier. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-12cfg80211: use wireless_dev for interface managementJohannes Berg
In order to be able to create P2P Device wdevs, move the virtual interface management over to wireless_dev structures. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-07-12net: Remove checks for dst_ops->redirect being NULL.David S. Miller
No longer necessary. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-12net: Add dummy dst_ops->redirect method where needed.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-12ipv6: Use icmpv6_notify() to propagate redirect, instead of rt6_redirect().David S. Miller
And delete rt6_redirect(), since it is no longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-12ipv6: Add redirect support to all protocol icmp error handlers.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-12ipv6: Add ip6_redirect() and ip6_sk_redirect() helper functions.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-12ipv6: Pull main logic of rt6_redirect() into rt6_do_redirect().David S. Miller
Hook it into dst_ops->redirect as well. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11ipv6: Move bulk of redirect handling into rt6_redirect().David S. Miller
This sets things up so that we can have the protocol error handlers call down into the ipv6 route code for redirects just as ipv4 already does. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11ipv6: Export ndisc option parsing from ndisc.cDavid S. Miller
This is going to be used internally by the rt6 redirect code. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11ipv4: Kill ip_rt_redirect().David S. Miller
No longer needed, as the protocol handlers now all properly propagate the redirect back into the routing code. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11ipv4: Add redirect support to all protocol icmp error handlers.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11ipv4: Add ipv4_redirect() and ipv4_sk_redirect() helper functions.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11ipv4: Generalize ip_do_redirect() and hook into new dst_ops->redirect.David S. Miller
All of the redirect acceptance policy is now contained within. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11ipv4: Rearrange arguments to ip_rt_redirect()David S. Miller
Pass in the SKB rather than just the IP addresses, so that policy and other aspects can reside in ip_rt_redirect() rather then icmp_redirect(). Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11ipv4: Pull redirect instantiation out into a helper function.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11ipv4: Deliver ICMP redirects to sockets too.David S. Miller
And thus, we can remove the ping_err() hack. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11ipv4: Pull icmp socket delivery out into a helper function.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11tcp: TCP Small QueuesEric Dumazet
This introduce TSQ (TCP Small Queues) TSQ goal is to reduce number of TCP packets in xmit queues (qdisc & device queues), to reduce RTT and cwnd bias, part of the bufferbloat problem. sk->sk_wmem_alloc not allowed to grow above a given limit, allowing no more than ~128KB [1] per tcp socket in qdisc/dev layers at a given time. TSO packets are sized/capped to half the limit, so that we have two TSO packets in flight, allowing better bandwidth use. As a side effect, setting the limit to 40000 automatically reduces the standard gso max limit (65536) to 40000/2 : It can help to reduce latencies of high prio packets, having smaller TSO packets. This means we divert sock_wfree() to a tcp_wfree() handler, to queue/send following frames when skb_orphan() [2] is called for the already queued skbs. Results on my dev machines (tg3/ixgbe nics) are really impressive, using standard pfifo_fast, and with or without TSO/GSO. Without reduction of nominal bandwidth, we have reduction of buffering per bulk sender : < 1ms on Gbit (instead of 50ms with TSO) < 8ms on 100Mbit (instead of 132 ms) I no longer have 4 MBytes backlogged in qdisc by a single netperf session, and both side socket autotuning no longer use 4 Mbytes. As skb destructor cannot restart xmit itself ( as qdisc lock might be taken at this point ), we delegate the work to a tasklet. We use one tasklest per cpu for performance reasons. If tasklet finds a socket owned by the user, it sets TSQ_OWNED flag. This flag is tested in a new protocol method called from release_sock(), to eventually send new segments. [1] New /proc/sys/net/ipv4/tcp_limit_output_bytes tunable [2] skb_orphan() is usually called at TX completion time, but some drivers call it in their start_xmit() handler. These drivers should at least use BQL, or else a single TCP session can still fill the whole NIC TX ring, since TSQ will have no effect. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Dave Taht <dave.taht@bufferbloat.net> Cc: Tom Herbert <therbert@google.com> Cc: Matt Mathis <mattmathis@google.com> Cc: Yuchung Cheng <ycheng@google.com> Cc: Nandita Dukkipati <nanditad@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11tcp: Fix out of bounds access to tcpm_valsAlexander Duyck
The recent patch "tcp: Maintain dynamic metrics in local cache." introduced an out of bounds access due to what appears to be a typo. I believe this change should resolve the issue by replacing the access to RTAX_CWND with TCP_METRIC_CWND. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11mac80211: Fix the Problem of Unreachable Mesh STA from DSChun-Yeow Yeoh
This patch fixes the problem of unreachable mesh STA from Distribution System (DS) due to the introduction of previous patch solving the mesh STA joining from one MBSS to another MBSS. Reported-by: Georgiewskiy Yuriy <bottleman@icf.org.ru> Signed-off-by: Chun-Yeow Yeoh <yeohchunyeow@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-07-11Bluetooth: debug: Print amp_mgr refcntAndrei Emeltchenko
Improve debug output. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-11Bluetooth: debug: Use standard hex object specifiers in hci_eventAndrei Emeltchenko
To help debugging printed hex object use standard bluetooth specifiers in hci_event. The patch changes format from 0x%04x to 0x%4.4x; print manufacturer id and handle in hex instead of int; print opcode always in 0x%4.4x format; status in 0x%2.2x. Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-11bridge: fix endianLi RongQing
mld->mld_maxdelay is net endian, so we should use ntohs, not htons CC: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller
Conflicts: net/batman-adv/bridge_loop_avoidance.c net/batman-adv/bridge_loop_avoidance.h net/batman-adv/soft-interface.c net/mac80211/mlme.c With merge help from Antonio Quartulli (batman-adv) and Stephen Rothwell (drivers/net/usb/qmi_wwan.c). The net/mac80211/mlme.c conflict seemed easy enough, accounting for a conversion to some new tracing macros. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10net: Fix memory leak - vlan_info structAmir Hanania
In driver reload test there is a memory leak. The structure vlan_info was not freed when the driver was removed. It was not released since the nr_vids var is one after last vlan was removed. The nr_vids is one, since vlan zero is added to the interface when the interface is being set, but the vlan zero is not deleted at unregister. Fix - delete vlan zero when we unregister the device. Signed-off-by: Amir Hanania <amir.hanania@intel.com> Acked-by: John Fastabend <john.r.fastabend@intel.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10Merge tag 'batman-adv-fix-for-davem' of git://git.open-mesh.org/linux-mergeDavid S. Miller
Included changes: - fix a bug generated by the wrong interaction between the GW feature and the Bridge Loop Avoidance
2012-07-10net: Fix non-kernel-doc comments with kernel-doc start markerBen Hutchings
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10net: Fix (nearly-)kernel-doc comments for various functionsBen Hutchings
Fix incorrect start markers, wrapped summary lines, missing section breaks, incorrect separators, and some name mismatches. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10net: Properly define functions with no parametersBen Hutchings
Defining a function with no parameters as 'T foo()' is the deprecated K&R style, and is not strictly equivalent to defining it as 'T foo(void)'. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10ipv4: Remove inetpeer from routes.David S. Miller
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10ipv4: Calling ->cow_metrics() now is a bug.David S. Miller
Nothing every writes to ipv4 metrics any longer. PMTU is stored in rt->rt_pmtu. Dynamic TCP metrics are stored in a special TCP metrics cache, completely outside of the routes. Therefore ->cow_metrics() can simply nothing more than a WARN_ON trigger so we can catch anyone who tries to add new writes to ipv4 route metrics. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10ipv4: Kill dst_copy_metrics() call from ipv4_blackhole_route().David S. Miller
Blackhole routes have a COW metrics operation that returns NULL always, therefore this dst_copy_metrics() call did absolutely nothing. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10ipv4: Enforce max MTU metric at route insertion time.David S. Miller
Rather than at every struct rtable creation. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10ipv4: Maintain redirect and PMTU info in struct rtable again.David S. Miller
Maintaining this in the inetpeer entries was not the right way to do this at all. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10rtnetlink: Remove ts/tsage args to rtnl_put_cacheinfo().David S. Miller
Nobody provides non-zero values any longer. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10inet: Kill FLOWI_FLAG_PRECOW_METRICS.David S. Miller
No longer needed. TCP writes metrics, but now in it's own special cache that does not dirty the route metrics. Therefore there is no longer any reason to pre-cow metrics in this way. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10inet: Minimize use of cached route inetpeer.David S. Miller
Only use it in the absolutely required cases: 1) COW'ing metrics 2) ipv4 PMTU 3) ipv4 redirects Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10inet: Remove ->get_peer() method.David S. Miller
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10tcp: Remove tw->tw_peerDavid S. Miller
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10tcp: Move timestamps from inetpeer to metrics cache.David S. Miller
With help from Lin Ming. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10net: Don't report route RTT metric value in cache dumps.David S. Miller
We don't maintain it dynamically any longer, so reporting it would be extremely misleading. Report zero instead. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10tcp: Maintain dynamic metrics in local cache.David S. Miller
Maintain a local hash table of TCP dynamic metrics blobs. Computed TCP metrics are no longer maintained in the route metrics. The table uses RCU and an extremely simple hash so that it has low latency and low overhead. A simple hash is legitimate because we only make metrics blobs for fully established connections. Some tweaking of the default hash table sizes, metric timeouts, and the hash chain length limit certainly could use some tweaking. But the basic design seems sound. With help from Eric Dumazet and Joe Perches. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-10tcp: Abstract back handling peer aliveness test into helper function.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-02 00:40:35 +0000