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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>
2012-07-10tcp: Move dynamnic metrics handling into seperate file.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-09small cleanup in ax25_addr_parse()Dan Carpenter
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>
2012-07-08sctp: refactor sctp_packet_append_chunk and clenup some memory leaksNeil Horman
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>
2012-07-07Merge branch 'for-davem' of git://gitorious.org/linux-can/linux-can-nextDavid S. Miller
2012-07-07Merge branch 'master' of git://1984.lsi.us.es/nf-nextDavid S. Miller
2012-07-06ipv6: fix a bad cast in ip6_dst_lookup_tail()Eric Dumazet
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>
2012-07-05ipv6: remove redundant declarationsEric Dumazet
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>
2012-07-05ipv4: Avoid overhead when no custom FIB rules are installed.David S. Miller
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>
2012-07-05ipv6: Initialize the neighbour pointer of rt6_info on allocationSteffen Klassert
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. Miller
2012-07-056lowpan: revert 'reuse eth_mac_addr()'alex.bluesman.smirnov@gmail.com
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.Li
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.Li
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 Mintz
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 Dumazet
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. Miller
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05xfrm: No need to copy generic neighbour pointer.David S. Miller
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. Miller
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. Miller
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. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05decnet: Use neighbours privately in dn_route struct.David S. Miller
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. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05br_netfilter: Convert to dst_neigh_lookup_skb().David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05sch_teql: Convert over to dev_neigh_lookup_skb().David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-05net: Add optional SKB arg to dst_ops->neigh_lookup().David S. Miller
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. Miller
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. Miller
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. Miller
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. Miller
Do not use the dst cached neigh, we'll be getting rid of that. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-04ipv4: Fix crashes in ip_options_compile().David S. Miller
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 Kumar
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 Bursztyka
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 Ayuso
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>
2012-07-04netfilter: nf_conntrack: generalize nf_ct_l4proto_netPablo Neira Ayuso
This patch generalizes nf_ct_l4proto_net by splitting it into chunks and moving the corresponding protocol part to where it really belongs to. To clarify, note that we follow two different approaches to support per-net depending if it's built-in or run-time loadable protocol tracker. Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Acked-by: Gao feng <gaofeng@cn.fujitsu.com>
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