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2012-07-11net: Fix non-kernel-doc comments with kernel-doc start markerBen Hutchings4-17/+8
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11net: Fix (nearly-)kernel-doc comments for various functionsBen Hutchings46-103/+163
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>
2012-07-11net: Properly define functions with no parametersBen Hutchings1-1/+1
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>
2012-07-11ipv4: Remove inetpeer from routes.David S. Miller2-61/+6
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11ipv4: Calling ->cow_metrics() now is a bug.David S. Miller1-28/+2
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>
2012-07-11ipv4: Kill dst_copy_metrics() call from ipv4_blackhole_route().David S. Miller1-1/+0
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>
2012-07-11ipv4: Enforce max MTU metric at route insertion time.David S. Miller2-6/+3
Rather than at every struct rtable creation. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11ipv4: Maintain redirect and PMTU info in struct rtable again.David S. Miller3-149/+40
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>
2012-07-11rtnetlink: Remove ts/tsage args to rtnl_put_cacheinfo().David S. Miller4-8/+4
Nobody provides non-zero values any longer. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11inet: Kill FLOWI_FLAG_PRECOW_METRICS.David S. Miller3-11/+4
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>
2012-07-11inet: Minimize use of cached route inetpeer.David S. Miller5-22/+35
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>
2012-07-11inet: Remove ->get_peer() method.David S. Miller2-32/+0
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11tcp: Remove tw->tw_peerDavid S. Miller1-14/+2
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11tcp: Move timestamps from inetpeer to metrics cache.David S. Miller7-123/+144
With help from Lin Ming. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11net: Don't report route RTT metric value in cache dumps.David S. Miller2-18/+15
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>
2012-07-11tcp: Maintain dynamic metrics in local cache.David S. Miller2-93/+464
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>
2012-07-11tcp: Abstract back handling peer aliveness test into helper function.David S. Miller3-2/+12
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-11tcp: Move dynamnic metrics handling into seperate file.David S. Miller3-187/+195
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-09small cleanup in ax25_addr_parse()Dan Carpenter1-2/+4
The comments were wrong here because "AX25_MAX_DIGIS" is 8 but the comments say 6. Also I've changed the "7" to "AX25_ADDR_LEN". Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-09sctp: refactor sctp_packet_append_chunk and clenup some memory leaksNeil Horman1-27/+52
While doing some recent work on sctp sack bundling I noted that sctp_packet_append_chunk was pretty inefficient. Specifially, it was called recursively while trying to bundle auth and sack chunks. Because of that we call sctp_packet_bundle_sack and sctp_packet_bundle_auth a total of 4 times for every call to sctp_packet_append_chunk, knowing that at least 3 of those calls will do nothing. So lets refactor sctp_packet_bundle_auth to have an outer part that does the attempted bundling, and an inner part that just does the chunk appends. This saves us several calls per iteration that we just don't need. Also, noticed that the auth and sack bundling fail to free the chunks they allocate if the append fails, so make sure we add that in Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: Vlad Yasevich <vyasevich@gmail.com> CC: "David S. Miller" <davem@davemloft.net> CC: linux-sctp@vger.kernel.org Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-08Merge branch 'for-davem' of git://gitorious.org/linux-can/linux-can-nextDavid S. Miller5-3/+254
2012-07-08Merge branch 'master' of git://1984.lsi.us.es/nf-nextDavid S. Miller13-256/+540
2012-07-06ipv6: fix a bad cast in ip6_dst_lookup_tail()Eric Dumazet1-1/+1
Fix a bug in ip6_dst_lookup_tail(), where typeof(dst) is "struct dst_entry **", not "struct dst_entry *" Reported-by: Fengguang Wu <wfg@linux.intel.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-06ipv6: remove redundant declarationsEric Dumazet1-3/+0
remove redundant declarations, they belong in include/net/tcp.h Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-06ipv4: Avoid overhead when no custom FIB rules are installed.David S. Miller3-12/+33
If the user hasn't actually installed any custom rules, or fiddled with the default ones, don't go through the whole FIB rules layer. It's just pure overhead. Instead do what we do with CONFIG_IP_MULTIPLE_TABLES disabled, check the individual tables by hand, one by one. Also, move fib_num_tclassid_users into the ipv4 network namespace. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-06ipv6: Initialize the neighbour pointer of rt6_info on allocationSteffen Klassert1-1/+1
git commit 97cac082 (ipv6: Store route neighbour in rt6_info struct) added a neighbour pointer to rt6_info. Currently we don't initialize this pointer at allocation time. We assume this pointer to be valid if it is not a null pointer, so initialize it on allocation. Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller13-40/+60
2012-07-056lowpan: revert 'reuse eth_mac_addr()'alex.bluesman.smirnov@gmail.com1-2/+14
This reverts the commit cdf49c283e2e105da86ca575ad35b453f5ff24ea which replaces lowpan '.ndo_set_mac_address' method by ethernet's one. Accorind to the IEEE 802.15.4 standard, device has 8-byte length address, so this hook loses the last 2 bytes which may rise a compatibility problems with other IEEE 802.15.4 standard implementations. Signed-off-by: Alexander Smirnov <alex.bluesman.smirnov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05dccp: remove unnecessary codes in ipv6.cRongQing.Li1-16/+5
opt always equals np->opts, so it is meaningless to define opt, and check if opt does not equal np->opts and then try to free opt. Signed-off-by: RongQing.Li <roy.qing.li@gmail.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05ipv6: remove unnecessary codes in tcp_ipv6.cRongQing.Li1-13/+3
opt always equals np->opts, so it is meaningless to define opt, and check if opt does not equal np->opts and then try to free opt. Signed-off-by: RongQing.Li <roy.qing.li@gmail.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05net-next: Add netif_get_num_default_rss_queuesYuval Mintz1-0/+11
Most multi-queue networking driver consider the number of online cpus when configuring RSS queues. This patch adds a wrapper to the number of cpus, setting an upper limit on the number of cpus a driver should consider (by default) when allocating resources for his queues. Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05ipv4: defer fib_compute_spec_dst() callEric Dumazet1-3/+12
ip_options_compile() can avoid calling fib_compute_spec_dst() by default, and perform the call only if needed. David suggested to add a helper to make the call only once. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05net: Kill dst->_neighbour, accessors, and final uses.David S. Miller1-18/+0
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05xfrm: No need to copy generic neighbour pointer.David S. Miller1-3/+0
Nobody reads it any longer. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05ipv4: No need to set generic neighbour pointer.David S. Miller1-59/+3
Nobody reads it any longer. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05ipv6: Store route neighbour in rt6_info struct.David S. Miller3-18/+33
This makes for a simplified conversion away from dst_get_neighbour*(). All code outside of ipv6 will use neigh lookups via dst_neigh_lookup*(). Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05net: Pass neighbours and dest address into NETEVENT_REDIRECT events.David S. Miller1-1/+6
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05decnet: Use neighbours privately in dn_route struct.David S. Miller2-8/+30
This allows an easy conversion away from dst_get_neighbour*(). Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05neigh: Convert over to dst_neigh_lookup_skb().David S. Miller1-3/+16
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05br_netfilter: Convert to dst_neigh_lookup_skb().David S. Miller1-13/+23
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05sch_teql: Convert over to dev_neigh_lookup_skb().David S. Miller1-25/+22
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05net: Add optional SKB arg to dst_ops->neigh_lookup().David S. Miller5-13/+33
Causes the handler to use the daddr in the ipv4/ipv6 header when the route gateway is unspecified (local subnet). Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05net: Do delayed neigh confirmation.David S. Miller4-9/+17
When a dst_confirm() happens, mark the confirmation as pending in the dst. Then on the next packet out, when we have the neigh in-hand, do the update. This removes the dependency in dst_confirm() of dst's having an attached neigh. While we're here, remove the explicit 'dst' NULL check, all except 2 or 3 call sites ensure it's not NULL. So just fix those cases up. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05sunrpc: Don't do a dst_confirm() on an input routes.David S. Miller1-3/+0
xs_udp_data_ready() is operating on received packets, and tries to do a dst_confirm() on the dst attached to the SKB. This isn't right, dst confirmation is for output routes, not input rights. It's for resetting the timers on the nexthop neighbour entry for the route, indicating that we've got good evidence that we've successfully reached it. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05ipv4: Don't report neigh uptodate state in rtcache procfs.David S. Miller1-10/+2
Soon routes will not have a cached neigh attached, nor will we be able to necessarily go directly to a neigh from an arbitrary route. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05ipv4: Make neigh lookups directly in output packet path.David S. Miller3-14/+16
Do not use the dst cached neigh, we'll be getting rid of that. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05ipv4: Fix crashes in ip_options_compile().David S. Miller1-3/+6
The spec_dst uses should be guarded by skb_rtable() being non-NULL not just the SKB being non-null. Reported-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-04netfilter: nfnetlink_queue: do not allow to set unsupported flag bitsKrishna Kumar1-0/+5
Allow setting of only supported flag bits in queue->flags. Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-07-04netfilter: nfnetlink: check callbacks before using those in nfnetlink_rcv_msgTomasz Bursztyka1-1/+3
nfnetlink_rcv_msg() might call a NULL callback which will cause NULL pointer dereference. Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2012-07-04netfilter: nf_ct_tcp: missing per-net support for cttimeoutPablo Neira Ayuso1-1/+1
This patch adds missing per-net support for the cttimeout infrastructure to TCP. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Acked-by: Gao feng <gaofeng@cn.fujitsu.com>
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