27 May, 2011
1 commit
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…nel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
seqlock: Get rid of SEQLOCK_UNLOCKED* 'irq-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
irq: Remove smp_affinity_list when unregister irq proc
25 May, 2011
1 commit
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In igmp_group_dropped() we call ip_mc_clear_src(), which resets the number
of source filters per mulitcast. However, igmp_group_dropped() is also
called on NETDEV_DOWN, NETDEV_PRE_TYPE_CHANGE and NETDEV_UNREGISTER, which
means that the group might get added back on NETDEV_UP, NETDEV_REGISTER and
NETDEV_POST_TYPE_CHANGE respectively, leaving us with broken source
filters.To fix that, we must clear the source filters only when there are no users
in the ip_mc_list, i.e. in ip_mc_dec_group() and on device destroy.Acked-by: David L Stevens
Signed-off-by: Veaceslav Falico
Signed-off-by: David S. Miller
24 May, 2011
3 commits
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All static seqlock should be initialized with the lockdep friendly
__SEQLOCK_UNLOCKED() macro.Remove legacy SEQLOCK_UNLOCKED() macro.
Signed-off-by: Eric Dumazet
Cc: David Miller
Link: http://lkml.kernel.org/r/%3C1306238888.3026.31.camel%40edumazet-laptop%3E
Signed-off-by: Thomas Gleixner -
The %pK format specifier is designed to hide exposed kernel pointers,
specifically via /proc interfaces. Exposing these pointers provides an
easy target for kernel write vulnerabilities, since they reveal the
locations of writable structures containing easily triggerable function
pointers. The behavior of %pK depends on the kptr_restrict sysctl.If kptr_restrict is set to 0, no deviation from the standard %p behavior
occurs. If kptr_restrict is set to 1, the default, if the current user
(intended to be a reader via seq_printf(), etc.) does not have CAP_SYSLOG
(currently in the LSM tree), kernel pointers using %pK are printed as 0's.
If kptr_restrict is set to 2, kernel pointers using %pK are printed as
0's regardless of privileges. Replacing with 0's was chosen over the
default "(null)", which cannot be parsed by userland %p, which expects
"(nil)".The supporting code for kptr_restrict and %pK are currently in the -mm
tree. This patch converts users of %p in net/ to %pK. Cases of printing
pointers to the syslog are not covered, since this would eliminate useful
information for postmortem debugging and the reading of the syslog is
already optionally protected by the dmesg_restrict sysctl.Signed-off-by: Dan Rosenberg
Cc: James Morris
Cc: Eric Dumazet
Cc: Thomas Graf
Cc: Eugene Teo
Cc: Kees Cook
Cc: Ingo Molnar
Cc: David S. Miller
Cc: Peter Zijlstra
Cc: Eric Paris
Signed-off-by: Andrew Morton
Signed-off-by: David S. Miller -
net/ipv4/ping.c: In function ‘ping_v4_unhash’:
net/ipv4/ping.c:140:28: warning: variable ‘hslot’ set but not usedSigned-off-by: Eric Dumazet
CC: Vasiliy Kulikov
Acked-by: Vasiliy Kulikov
Signed-off-by: David S. Miller
23 May, 2011
4 commits
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (27 commits)
bnx2x: allow device properly initialize after hotplug
bnx2x: fix DMAE timeout according to hw specifications
bnx2x: properly handle CFC DEL in cnic flow
bnx2x: call dev_kfree_skb_any instead of dev_kfree_skb
net: filter: move forward declarations to avoid compile warnings
pktgen: refactor pg_init() code
pktgen: use vzalloc_node() instead of vmalloc_node() + memset()
net: skb_trim explicitely check the linearity instead of data_len
ipv4: Give backtrace in ip_rt_bug().
net: avoid synchronize_rcu() in dev_deactivate_many
net: remove synchronize_net() from netdev_set_master()
rtnetlink: ignore NETDEV_RELEASE and NETDEV_JOIN event
net: rename NETDEV_BONDING_DESLAVE to NETDEV_RELEASE
bridge: call NETDEV_JOIN notifiers when add a slave
netpoll: disable netpoll when enslave a device
macvlan: Forward unicast frames in bridge mode to lowerdev
net: Remove linux/prefetch.h include from linux/skbuff.h
ipv4: Include linux/prefetch.h in fib_trie.c
netlabel: Remove prefetches from list handlers.
drivers/net: add prefetch header for prefetch users
...Fixed up prefetch parts: removed a few duplicate prefetch.h includes,
fixed the location of the igb prefetch.h, took my version of the
skbuff.h code without the extra parentheses etc. -
After discovering that wide use of prefetch on modern CPUs
could be a net loss instead of a win, net drivers which were
relying on the implicit inclusion of prefetch.h via the list
headers showed up in the resulting cleanup fallout. Give
them an explicit include via the following $0.02 script.=========================================
#!/bin/bash
MANUAL=""
for i in `git grep -l 'prefetch(.*)' .` ; do
grep -q '' $i
if [ $? = 0 ] ; then
continue
fi( echo '?^#include '
echo .
echo w
echo q
) | ed -s $i > /dev/null 2>&1
if [ $? != 0 ]; then
echo $i needs manual fixup
MANUAL="$i $MANUAL"
fi
done
echo ------------------- 8\
[ Fixed up some incorrect #include placements, and added some
non-network drivers and the fib_trie.c case - Linus ]
Signed-off-by: Linus Torvalds -
Add a stack backtrace to the ip_rt_bug path for debugging
Signed-off-by: Dave Jones
Signed-off-by: David S. Miller -
Signed-off-by: David S. Miller
21 May, 2011
1 commit
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1446 commits)
macvlan: fix panic if lowerdev in a bond
tg3: Add braces around 5906 workaround.
tg3: Fix NETIF_F_LOOPBACK error
macvlan: remove one synchronize_rcu() call
networking: NET_CLS_ROUTE4 depends on INET
irda: Fix error propagation in ircomm_lmp_connect_response()
irda: Kill set but unused variable 'bytes' in irlan_check_command_param()
irda: Kill set but unused variable 'clen' in ircomm_connect_indication()
rxrpc: Fix set but unused variable 'usage' in rxrpc_get_transport()
be2net: Kill set but unused variable 'req' in lancer_fw_download()
irda: Kill set but unused vars 'saddr' and 'daddr' in irlan_provider_connect_indication()
atl1c: atl1c_resume() is only used when CONFIG_PM_SLEEP is defined.
rxrpc: Fix set but unused variable 'usage' in rxrpc_get_peer().
rxrpc: Kill set but unused variable 'local' in rxrpc_UDP_error_handler()
rxrpc: Kill set but unused variable 'sp' in rxrpc_process_connection()
rxrpc: Kill set but unused variable 'sp' in rxrpc_rotate_tx_window()
pkt_sched: Kill set but unused variable 'protocol' in tc_classify()
isdn: capi: Use pr_debug() instead of ifdefs.
tg3: Update version to 3.119
tg3: Apply rx_discards fix to 5719/5720
...Fix up trivial conflicts in arch/x86/Kconfig and net/mac80211/agg-tx.c
as per Davem.
20 May, 2011
4 commits
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* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (78 commits)
Revert "rcu: Decrease memory-barrier usage based on semi-formal proof"
net,rcu: convert call_rcu(prl_entry_destroy_rcu) to kfree
batman,rcu: convert call_rcu(softif_neigh_free_rcu) to kfree_rcu
batman,rcu: convert call_rcu(neigh_node_free_rcu) to kfree()
batman,rcu: convert call_rcu(gw_node_free_rcu) to kfree_rcu
net,rcu: convert call_rcu(kfree_tid_tx) to kfree_rcu()
net,rcu: convert call_rcu(xt_osf_finger_free_rcu) to kfree_rcu()
net/mac80211,rcu: convert call_rcu(work_free_rcu) to kfree_rcu()
net,rcu: convert call_rcu(wq_free_rcu) to kfree_rcu()
net,rcu: convert call_rcu(phonet_device_rcu_free) to kfree_rcu()
perf,rcu: convert call_rcu(swevent_hlist_release_rcu) to kfree_rcu()
perf,rcu: convert call_rcu(free_ctx) to kfree_rcu()
net,rcu: convert call_rcu(__nf_ct_ext_free_rcu) to kfree_rcu()
net,rcu: convert call_rcu(net_generic_release) to kfree_rcu()
net,rcu: convert call_rcu(netlbl_unlhsh_free_addr6) to kfree_rcu()
net,rcu: convert call_rcu(netlbl_unlhsh_free_addr4) to kfree_rcu()
security,rcu: convert call_rcu(sel_netif_free) to kfree_rcu()
net,rcu: convert call_rcu(xps_dev_maps_release) to kfree_rcu()
net,rcu: convert call_rcu(xps_map_release) to kfree_rcu()
net,rcu: convert call_rcu(rps_map_release) to kfree_rcu()
... -
v3 -> v4: fix return boolean false instead of 0 for ic_is_init_dev
Currently the ip auto configuration has a hardcoded delay of 1 second.
When (ethernet) link takes longer to come up (e.g. more than 3 seconds),
nfs root may not be found.Remove the hardcoded delay, and wait for carrier on at least one network
device.Signed-off-by: Micha Nelissen
Cc: David Miller
Signed-off-by: David S. Miller -
The characters in a line should be no more than 80.
Signed-off-by: Changli Gao
Signed-off-by: David S. Miller -
As these functions are only used in this file.
Signed-off-by: Changli Gao
Signed-off-by: David S. Miller
19 May, 2011
4 commits
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Signed-off-by: David S. Miller
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This will next trickle down to rt_bind_peer().
Signed-off-by: David S. Miller
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This way the caller can get at the fully resolved fl4->{daddr,saddr}
etc.Signed-off-by: David S. Miller
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It's way past it's usefulness. And this gets rid of a bunch
of stray ->rt_{dst,src} references.Even the comment documenting the macro was inaccurate (stated
default was 1 when it's 0).If reintroduced, it should be done properly, with dynamic debug
facilities.Signed-off-by: David S. Miller
18 May, 2011
2 commits
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Noticed by Joe Perches.
Signed-off-by: David S. Miller
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If CONFIG_PROC_SYSCTL=n the building process fails:
ping.c:(.text+0x52af3): undefined reference to `inet_get_ping_group_range_net'
Moved inet_get_ping_group_range_net() to ping.c.
Reported-by: Randy Dunlap
Signed-off-by: Vasiliy Kulikov
Acked-by: Eric Dumazet
Acked-by: Randy Dunlap
Signed-off-by: David S. Miller
17 May, 2011
2 commits
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Commit 6623e3b24a5e (ipv4: IP defragmentation must be ECN aware) was an
attempt to not lose "Congestion Experienced" (CE) indications when
performing datagram defragmentation.Stefanos Harhalakis raised the point that RFC 3168 requirements were not
completely met by this commit.In particular, we MUST detect invalid combinations and eventually drop
illegal frames.Reported-by: Stefanos Harhalakis
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller -
At these points we have a fully filled in value via the IP
header the form of ip_hdr(skb)->saddrSigned-off-by: David S. Miller
16 May, 2011
1 commit
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udp_ioctl() really handles UDP and UDPLite protocols.
1) It can increment UDP_MIB_INERRORS in case first_packet_length() finds
a frame with bad checksum.2) It has a dependency on sizeof(struct udphdr), not applicable to
ICMP/PINGIf ping sockets need to handle SIOCINQ/SIOCOUTQ ioctl, this should be
done differently.Signed-off-by: Eric Dumazet
CC: Vasiliy Kulikov
Acked-by: Vasiliy Kulikov
Signed-off-by: David S. Miller
15 May, 2011
1 commit
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ping_table is not __read_mostly, since it contains one rwlock,
and is static to ping.cping_port_rover & ping_v4_lookup are static
Signed-off-by: Eric Dumazet
Acked-by: Vasiliy Kulikov
Signed-off-by: David S. Miller
14 May, 2011
5 commits
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At this point iph->daddr equals what rt->rt_dst would hold.
Signed-off-by: David S. Miller
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Pass in the sk_buff so that we can fetch the necessary keys from
the packet header when working with input routes.Signed-off-by: David S. Miller
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This will allow ip_options_build() to reliably look at the values of
iph->{daddr,saddr}Signed-off-by: David S. Miller
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This code block executes when opt->srr_is_hit is set. It will be
set only by ip_options_rcv_srr().ip_options_rcv_srr() walks until it hits a matching nexthop in the SRR
option addresses, and when it matches one 1) looks up the route for
that nexthop and 2) on route lookup success it writes that nexthop
value into iph->daddr.ip_forward_options() runs later, and again walks the SRR option
addresses looking for the option matching the destination of the route
stored in skb_rtable(). This route will be the same exact one looked
up for the nexthop by ip_options_rcv_srr().Therefore "rt->rt_dst == iph->daddr" must be true.
All it really needs to do is record the route's source address in the
matching SRR option adddress. It need not write iph->daddr again,
since that has already been done by ip_options_rcv_srr() as detailed
above.Signed-off-by: David S. Miller
-
This patch adds IPPROTO_ICMP socket kind. It makes it possible to send
ICMP_ECHO messages and receive the corresponding ICMP_ECHOREPLY messages
without any special privileges. In other words, the patch makes it
possible to implement setuid-less and CAP_NET_RAW-less /bin/ping. In
order not to increase the kernel's attack surface, the new functionality
is disabled by default, but is enabled at bootup by supporting Linux
distributions, optionally with restriction to a group or a group range
(see below).Similar functionality is implemented in Mac OS X:
http://www.manpagez.com/man/4/icmp/A new ping socket is created with
socket(PF_INET, SOCK_DGRAM, PROT_ICMP)
Message identifiers (octets 4-5 of ICMP header) are interpreted as local
ports. Addresses are stored in struct sockaddr_in. No port numbers are
reserved for privileged processes, port 0 is reserved for API ("let the
kernel pick a free number"). There is no notion of remote ports, remote
port numbers provided by the user (e.g. in connect()) are ignored.Data sent and received include ICMP headers. This is deliberate to:
1) Avoid the need to transport headers values like sequence numbers by
other means.
2) Make it easier to port existing programs using raw sockets.ICMP headers given to send() are checked and sanitized. The type must be
ICMP_ECHO and the code must be zero (future extensions might relax this,
see below). The id is set to the number (local port) of the socket, the
checksum is always recomputed.ICMP reply packets received from the network are demultiplexed according
to their id's, and are returned by recv() without any modifications.
IP header information and ICMP errors of those packets may be obtained
via ancillary data (IP_RECVTTL, IP_RETOPTS, and IP_RECVERR). ICMP source
quenches and redirects are reported as fake errors via the error queue
(IP_RECVERR); the next hop address for redirects is saved to ee_info (in
network order).socket(2) is restricted to the group range specified in
"/proc/sys/net/ipv4/ping_group_range". It is "1 0" by default, meaning
that nobody (not even root) may create ping sockets. Setting it to "100
100" would grant permissions to the single group (to either make
/sbin/ping g+s and owned by this group or to grant permissions to the
"netadmins" group), "0 4294967295" would enable it for the world, "100
4294967295" would enable it for the users, but not daemons.The existing code might be (in the unlikely case anyone needs it)
extended rather easily to handle other similar pairs of ICMP messages
(Timestamp/Reply, Information Request/Reply, Address Mask Request/Reply
etc.).Userspace ping util & patch for it:
http://openwall.info/wiki/people/segoon/pingFor Openwall GNU/*/Linux it was the last step on the road to the
setuid-less distro. A revision of this patch (for RHEL5/OpenVZ kernels)
is in use in Owl-current, such as in the 2011/03/12 LiveCD ISOs:
http://mirrors.kernel.org/openwall/Owl/current/iso/Initially this functionality was written by Pavel Kankovsky for
Linux 2.4.32, but unfortunately it was never made public.All ping options (-b, -p, -Q, -R, -s, -t, -T, -M, -I), are tested with
the patch.PATCH v3:
- switched to flowi4.
- minor changes to be consistent with raw sockets code.PATCH v2:
- changed ping_debug() to pr_debug().
- removed CONFIG_IP_PING.
- removed ping_seq_fops.owner field (unused for procfs).
- switched to proc_net_fops_create().
- switched to %pK in seq_printf().PATCH v1:
- fixed checksumming bug.
- CAP_NET_RAW may not create icmp sockets anymore.RFC v2:
- minor cleanups.
- introduced sysctl'able group range to restrict socket(2).Signed-off-by: Vasiliy Kulikov
Signed-off-by: David S. Miller
13 May, 2011
4 commits
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I swear none of my compilers warned about this, yet it is so
obvious.> net/ipv4/ip_forward.c: In function 'ip_forward':
> net/ipv4/ip_forward.c:87: warning: 'iph' may be used uninitialized in this functionReported-by: Stephen Rothwell
Signed-off-by: David S. Miller -
No matter what kind of header mangling occurs due to IP options
processing, rt->rt_dst will always equal iph->daddr in the packet.So we can safely use iph->daddr instead of rt->rt_dst here.
Signed-off-by: David S. Miller
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We already copy the 4-byte nexthop from the options block into
local variable "nexthop" for the route lookup.Re-use that variable instead of memcpy()'ing again when assigning
to iph->daddr after the route lookup succeeds.Signed-off-by: David S. Miller
-
All call sites conditionalize the call to ip_options_rcv_srr()
with a check of opt->srr, so no need to check it again there.Signed-off-by: David S. Miller
12 May, 2011
1 commit
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Conflicts:
drivers/net/benet/be_main.c
11 May, 2011
6 commits
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As it is, we assign the outer modes output function to the dst entry
when we create the xfrm bundle. This leads to two problems on interfamily
scenarios. We might insert ipv4 packets into ip6_fragment when called
from xfrm6_output. The system crashes if we try to fragment an ipv4
packet with ip6_fragment. This issue was introduced with git commit
ad0081e4 (ipv6: Fragment locally generated tunnel-mode IPSec6 packets
as needed). The second issue is, that we might insert ipv4 packets in
netfilter6 and vice versa on interfamily scenarios.With this patch we assign the inner mode output function to the dst entry
when we create the xfrm bundle. So xfrm4_output/xfrm6_output from the inner
mode is used and the right fragmentation and netfilter functions are called.
We switch then to outer mode with the output_finish functions.Signed-off-by: Steffen Klassert
Signed-off-by: David S. Miller -
Commit e67f88dd12f6 (net: dont hold rtnl mutex during netlink dump
callbacks) switched rtnl protection to RCU, but we forgot to adjust two
rcu_dereference() lockdep annotations :inet_get_link_af_size() or inet_fill_link_af() might be called with
rcu_read_lock or rtnl held, so use rcu_dereference_rtnl()
instead of rtnl_dereference()Reported-by: Valdis Kletnieks
Signed-off-by: Eric Dumazet
Signed-off-by: David S. Miller -
Rearrange xfrm4_dst_lookup() so that it works by calling a helper
function __xfrm_dst_lookup() that takes an explicit flow key storage
area as an argument.Use this new helper in xfrm4_get_saddr() so we can fetch the selected
source address from the flow instead of from rt->rt_srcSigned-off-by: David S. Miller
-
We already track and pass around the correct flow key,
so simply use it in udp_send_skb().Signed-off-by: David S. Miller
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On input packets, rt->rt_src always equals ip_hdr(skb)->saddr
Anything that mangles or otherwise changes the IP header must
relookup the route found at skb_rtable(). Therefore this
invariant must always hold true.Signed-off-by: David S. Miller
-
This eliminates an access to rt->rt_src.
Signed-off-by: David S. Miller
