- 18 Jun, 2006 40 commits
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Michael Chan authored
Herbert Xu pointed out that it is unsafe to call netif_tx_disable() from LLTX drivers because it uses dev->xmit_lock to synchronize whereas LLTX drivers use private locks. Convert tg3 to non-LLTX to fix this issue. tg3 is a lockless driver where hard_start_xmit and tx completion handling can run concurrently under normal conditions. A tx_lock is only needed to prevent netif_stop_queue and netif_wake_queue race condtions when the queue is full. So whether we use LLTX or non-LLTX, it makes practically no difference. Signed-off-by:
Michael Chan <mchan@broadcom.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Michael Chan authored
Remove tx_lock where it is unnecessary. tg3 runs lockless and so it requires interrupts to be disabled and sync'ed, netif_queue and NAPI poll to be stopped before the device can be reconfigured. After stopping everything, it is no longer necessary to get the tx_lock. Signed-off-by:
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David S. Miller authored
A lot of people have asked for a way to disable tcp_cwnd_restart(), and it seems reasonable to add a sysctl to do that. Signed-off-by: -
Michael Chan authored
Update driver version to 1.4.42. Signed-off-by:
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Michael Chan authored
Use CPU native page size to determine various ring sizes. This allows order-0 memory allocations on all systems. Added check to limit the page size to 16K since that's the maximum rx ring size that will be used. This will prevent using unnecessarily large page sizes on some architectures with large page sizes. [Suggested by David Miller] Signed-off-by:
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Michael Chan authored
Change bnx2_fw.h to use compressed text for all CPU images. Signed-off-by:
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Michael Chan authored
Add functions to decompress firmware before loading to the internal CPUs. Compressing the firmware reduces the driver size significantly. Added file name length sanity check in the gzip header to prevent going past the end of buffer [suggested by DaveM]. Signed-off-by:
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Michael Chan authored
Allow WOL settings on 5708 B2 and newer chips that have the problem fixed. Signed-off-by:
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Michael Chan authored
Add a counter for packets dropped by firmware. Signed-off-by:
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Luca De Cicco authored
RTT_min is updated each time a timeout event occurs in order to cope with hard handovers in wireless scenarios such as UMTS. Signed-off-by:
Luca De Cicco <ldecicco@gmail.com> Signed-off-by:
Stephen Hemminger <shemminger@dxpl.pdx.osdl.net> Signed-off-by:
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Luca De Cicco authored
The bandwidth estimate filter is now initialized with the first sample in order to have better performances in the case of small file transfers. Signed-off-by:
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Luca De Cicco authored
Cleanup some comments and add more references Signed-off-by:
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Stephen Hemminger authored
Need to update send sequence number tracking after first ack. Rework of patch from Luca De Cicco. Signed-off-by:
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Stephen Hemminger authored
The sysctl net.ipv4.ip_autoconfig is a legacy value that is not used. Signed-off-by:
Stephen Hemminger <shemminger@osdl.org> Signed-off-by:
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Alexey Dobriyan authored
Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by:
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Nick Fedchik authored
This cleans the STIR421x part of the irda-usb code. We also no longer try to load all existing firmwares but only the matching one (according to the USB id we get from the dongle). Signed-off-by:
Nick Fedchik <nfedchik@atlantic-link.com.ua> Signed-off-by:
Samuel Ortiz <samuel@sortiz.org> Signed-off-by:
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Alexey Dobriyan authored
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Herbert Xu authored
It's better to warn and fail rather than rarely triggering BUG on paths that incorrectly call skb_trim/__skb_trim on a non-linear skb. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Herbert Xu authored
I found a few more spots where pskb_trim_rcsum could be used but were not. This patch changes them to use it. Also, sk_filter can get paged skb data. Therefore we must use pskb_trim instead of skb_trim. Signed-off-by:
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Herbert Xu authored
In ppp_receive_nonmp_frame, we call pskb_may_pull(skb, skb->len) if the tailroom is >= 124. This is pointless because this pskb_may_pull is only needed if the skb is non-linear. However, if it is non-linear then the tailroom would be zero. So it can be safely removed. Signed-off-by:
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Herbert Xu authored
The linearisation operation doesn't need to be super-optimised. So we can replace __skb_linearize with __pskb_pull_tail which does the same thing but is more general. Also, most users of skb_linearize end up testing whether the skb is linear or not so it helps to make skb_linearize do just that. Some callers of skb_linearize also use it to copy cloned data, so it's useful to have a new function skb_linearize_cow to copy the data if it's either non-linear or cloned. Last but not least, I've removed the gfp argument since nobody uses it anymore. If it's ever needed we can easily add it back. Misc bugs fixed by this patch: * via-velocity error handling (also, no SG => no frags) Signed-off-by:
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Herbert Xu authored
Various drivers use xmit_lock internally to synchronise with their transmission routines. They do so without setting xmit_lock_owner. This is fine as long as netpoll is not in use. With netpoll it is possible for deadlocks to occur if xmit_lock_owner isn't set. This is because if a printk occurs while xmit_lock is held and xmit_lock_owner is not set can cause netpoll to attempt to take xmit_lock recursively. While it is possible to resolve this by getting netpoll to use trylock, it is suboptimal because netpoll's sole objective is to maximise the chance of getting the printk out on the wire. So delaying or dropping the message is to be avoided as much as possible. So the only alternative is to always set xmit_lock_owner. The following patch does this by introducing the netif_tx_lock family of functions that take care of setting/unsetting xmit_lock_owner. I renamed xmit_lock to _xmit_lock to indicate that it should not be used directly. I didn't provide irq versions of the netif_tx_lock functions since xmit_lock is meant to be a BH-disabling lock. This is pretty much a straight text substitution except for a small bug fix in winbond. It currently uses netif_stop_queue/spin_unlock_wait to stop transmission. This is unsafe as an IRQ can potentially wake up the queue. So it is safer to use netif_tx_disable. The hamradio bits used spin_lock_irq but it is unnecessary as xmit_lock must never be taken in an IRQ handler. Signed-off-by:
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Patrick McHardy authored
hashlimit does: if (!ht->rnd) get_random_bytes(&ht->rnd, 4); ignoring that 0 is also a valid random number. Signed-off-by:Patrick McHardy <kaber@trash.net> Signed-off-by:
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Patrick McHardy authored
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Patrick McHardy authored
create_proc_entry must not be called with locks held. Use a mutex instead to protect data only changed in user context. Signed-off-by:
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James Morris authored
Add new per-packet access controls to SELinux, replacing the old packet controls. Packets are labeled with the iptables SECMARK and CONNSECMARK targets, then security policy for the packets is enforced with these controls. To allow for a smooth transition to the new controls, the old code is still present, but not active by default. To restore previous behavior, the old controls may be activated at runtime by writing a '1' to /selinux/compat_net, and also via the kernel boot parameter selinux_compat_net. Switching between the network control models requires the security load_policy permission. The old controls will probably eventually be removed and any continued use is discouraged. With this patch, the new secmark controls for SElinux are disabled by default, so existing behavior is entirely preserved, and the user is not affected at all. It also provides a config option to enable the secmark controls by default (which can always be overridden at boot and runtime). It is also noted in the kconfig help that the user will need updated userspace if enabling secmark controls for SELinux and that they'll probably need the SECMARK and CONNMARK targets, and conntrack protocol helpers, although such decisions are beyond the scope of kernel configuration. Signed-off-by:
James Morris <jmorris@namei.org> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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James Morris authored
Add a new xtables target, CONNSECMARK, which is used to specify rules for copying security marks from packets to connections, and for copyying security marks back from connections to packets. This is similar to the CONNMARK target, but is more limited in scope in that it only allows copying of security marks to and from packets, as this is all it needs to do. A typical scenario would be to apply a security mark to a 'new' packet with SECMARK, then copy that to its conntrack via CONNMARK, and then restore the security mark from the connection to established and related packets on that connection. Signed-off-by:
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James Morris authored
Add a secmark field to IP and NF conntracks, so that security markings on packets can be copied to their associated connections, and also copied back to packets as required. This is similar to the network mark field currently used with conntrack, although it is intended for enforcement of security policy rather than network policy. Signed-off-by:
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James Morris authored
Add a SECMARK target to xtables, allowing the admin to apply security marks to packets via both iptables and ip6tables. The target currently handles SELinux security marking, but can be extended for other purposes as needed. Signed-off-by:
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James Morris authored
Add a secmark field to the skbuff structure, to allow security subsystems to place security markings on network packets. This is similar to the nfmark field, except is intended for implementing security policy, rather than than networking policy. This patch was already acked in principle by Dave Miller. Signed-off-by:
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James Morris authored
Add and export new functions to the in-kernel SELinux API in support of the new secmark-based packet controls. Signed-off-by:
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James Morris authored
Secmark implements a new scheme for adding security markings to packets via iptables, as well as changes to SELinux to use these markings for security policy enforcement. The rationale for this scheme is explained and discussed in detail in the original threads: http://thread.gmane.org/gmane.linux.network/34927/ http://thread.gmane.org/gmane.linux.network/35244/ Examples of policy and rulesets, as well as a full archive of patches for iptables and SELinux userland, may be found at: http://people.redhat.com/jmorris/selinux/secmark/ The code has been tested with various compilation options and in several scenarios, including with 'complicated' protocols such as FTP and also with the new generic conntrack code with IPv6 connection tracking. This patch: Add support for a new object class ('packet'), and associated permissions ('send', 'recv', 'relabelto'). These are used to enforce security policy for network packets labeled with SECMARK, and for adding labeling rules. Signed-off-by:
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Christopher J. PeBenito authored
Add a security class for appletalk sockets so that they can be distinguished in SELinux policy. Please apply. Signed-off-by:
Stephen Smalley <sds@tycho.nsa.gov> Acked-by:
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David S. Miller authored
Assignment used as truth value in xfrm_del_sa() and xfrm_get_policy(). Wrong argument type declared for security_xfrm_state_delete() when SELINUX is disabled. Signed-off-by: -
Dave Jones authored
Just spotted this typo in a new option. Signed-off-by:
Dave Jones <davej@redhat.com> Signed-off-by:
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Catherine Zhang authored
This patch contains a fix for the previous patch that adds security contexts to IPsec policies and security associations. In the previous patch, no authorization (besides the check for write permissions to SAD and SPD) is required to delete IPsec policies and security assocations with security contexts. Thus a user authorized to change SAD and SPD can bypass the IPsec policy authorization by simply deleteing policies with security contexts. To fix this security hole, an additional authorization check is added for removing security policies and security associations with security contexts. Note that if no security context is supplied on add or present on policy to be deleted, the SELinux module allows the change unconditionally. The hook is called on deletion when no context is present, which we may want to change. At present, I left it up to the module. LSM changes: The patch adds two new LSM hooks: xfrm_policy_delete and xfrm_state_delete. The new hooks are necessary to authorize deletion of IPsec policies that have security contexts. The existing hooks xfrm_policy_free and xfrm_state_free lack the context to do the authorization, so I decided to split authorization of deletion and memory management of security data, as is typical in the LSM interface. Use: The new delete hooks are checked when xfrm_policy or xfrm_state are deleted by either the xfrm_user interface (xfrm_get_policy, xfrm_del_sa) or the pfkey interface (pfkey_spddelete, pfkey_delete). SELinux changes: The new policy_delete and state_delete functions are added. Signed-off-by:
Catherine Zhang <cxzhang@watson.ibm.com> Signed-off-by:
Trent Jaeger <tjaeger@cse.psu.edu> Acked-by:
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Andreas Schwab authored
cn_queue.c:130: warning: value computed is not used There is no point in testing the atomic value if the result is thrown away. From Evgeniy: It was created to put implicit smp barrier, but it is not needed there. Signed-off-by:
Andreas Schwab <schwab@suse.de> Signed-off-by:
Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by:
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David S. Miller authored
It is typed wrong, and it's only assigned and used once. So just pass in iph->daddr directly which fixes both problems. Based upon a patch by Alexey Dobriyan. Signed-off-by: -
Alexey Dobriyan authored
All users pass 32-bit values as addresses and internally they're compared with 32-bit entities. So, change "laddr" and "raddr" types to __be32. Signed-off-by:
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Alexey Dobriyan authored
All users except two expect 32-bit big-endian value. One is of ->multiaddr = ->multiaddr variety. And last one is "%08lX". Signed-off-by:
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