- 07 12月, 2011 9 次提交
-
-
由 Pavel Emelyanov 提交于
The new API will specify family to work with. Teach the existing socket walking code to bypass not interesting ones. To preserve compatibility with existing behavior the _compat code sets interesting family to AF_UNSPEC to dump them all. Signed-off-by: NPavel Emelyanov <xemul@parallels.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
由 Pavel Emelyanov 提交于
Make inet_diag_dumo work with given header instead of calculating one from the nl message. The SOCK_DIAG_BY_FAMILY just passes skb's one through, the compat code converts the old header to new one. Also fix the bytecode calculation to find one at proper offset. Signed-off-by: NPavel Emelyanov <xemul@parallels.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
由 Pavel Emelyanov 提交于
Make inet_diag_get_exact work with given header instead of calculating one from the nl message. The SOCK_DIAG_BY_FAMILY just passes skb's one through, the compat code converts the old header to new one. Signed-off-by: NPavel Emelyanov <xemul@parallels.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
由 Pavel Emelyanov 提交于
This one coinsides with the sock_diag_req in the beginning and contains only used fields from its previous analogue. The existing code is patched to use the _compat version of it for now. Signed-off-by: NPavel Emelyanov <xemul@parallels.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
由 Pavel Emelyanov 提交于
When receiving the SOCK_DIAG_BY_FAMILY message we have to find the handler for provided family and pass the nl message to it. This patch describes an infrastructure to work with such nandlers and implements stubs for AF_INET(6) ones. Signed-off-by: NPavel Emelyanov <xemul@parallels.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
由 Pavel Emelyanov 提交于
Sorry, but the vger didn't let this message go to the list. Re-sending it with less spam-filter-prone subject. When dumping the AF_INET/AF_INET6 sockets user will also specify the protocol, so prepare the protocol diag handlers to work with IPPROTO_ constants. Signed-off-by: NPavel Emelyanov <xemul@parallels.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
由 Pavel Emelyanov 提交于
Current code calculates it at fixed offset. This offset will change, so move the BC calculation upper to make the further patching simpler. Signed-off-by: NPavel Emelyanov <xemul@parallels.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
由 Pavel Emelyanov 提交于
This type will run the family+protocol based socket dumping. Also prepare the stub function for it. Signed-off-by: NPavel Emelyanov <xemul@parallels.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
由 Pavel Emelyanov 提交于
The ultimate goal is to get the sock_diag module, that works in family+protocol terms. Currently this is suitable to do on the inet_diag basis, so rename parts of the code. It will be moved to sock_diag.c later. Signed-off-by: NPavel Emelyanov <xemul@parallels.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 23 11月, 2011 2 次提交
-
-
由 Alexey Dobriyan 提交于
C assignment can handle struct in6_addr copying. Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
由 Maciej Żenczykowski 提交于
Signed-off-by: NMaciej Żenczykowski <maze@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 14 11月, 2011 1 次提交
-
-
由 Maciej Żenczykowski 提交于
commit 3ceca749 added a TOS attribute. Unfortunately TOS and TCLASS are both present in a dual-stack v6 socket, furthermore they can have different values. As such one cannot in a sane way expose both through a single attribute. Signed-off-by: NMaciej Żenczyowski <maze@google.com> CC: Murali Raja <muralira@google.com> CC: Stephen Hemminger <shemminger@vyatta.com> CC: Eric Dumazet <eric.dumazet@gmail.com> CC: David S. Miller <davem@davemloft.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 13 10月, 2011 1 次提交
-
-
由 Murali Raja 提交于
This patch exposes the tos value for the TCP sockets when the TOS flag is requested in the ext_flags for the inet_diag request. This would mainly be used to expose TOS values for both for TCP and UDP sockets. Currently it is supported for TCP. When netlink support for UDP would be added the support to expose the TOS values would alse be done. For IPV4 tos value is exposed and for IPV6 tclass value is exposed. Signed-off-by: NMurali Raja <muralira@google.com> Acked-by: NStephen Hemminger <shemminger@vyatta.com> Acked-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 18 6月, 2011 1 次提交
-
-
由 Eric Dumazet 提交于
A malicious user or buggy application can inject code and trigger an infinite loop in inet_diag_bc_audit() Also make sure each instruction is aligned on 4 bytes boundary, to avoid unaligned accesses. Reported-by: NDan Rosenberg <drosenberg@vsecurity.com> Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 10 6月, 2011 1 次提交
-
-
由 Greg Rose 提交于
The message size allocated for rtnl ifinfo dumps was limited to a single page. This is not enough for additional interface info available with devices that support SR-IOV and caused a bug in which VF info would not be displayed if more than approximately 40 VFs were created per interface. Implement a new function pointer for the rtnl_register service that will calculate the amount of data required for the ifinfo dump and allocate enough data to satisfy the request. Signed-off-by: NGreg Rose <gregory.v.rose@intel.com> Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
-
- 23 4月, 2011 1 次提交
-
-
由 Eric Dumazet 提交于
Add const qualifiers to structs iphdr, ipv6hdr and in6_addr pointers where possible, to make code intention more obvious. Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 20 1月, 2011 1 次提交
-
-
由 David S. Miller 提交于
This reverts commit 0ab03c2b. It breaks several things including the avahi daemon. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 10 1月, 2011 1 次提交
-
-
由 Jan Engelhardt 提交于
Due to NLM_F_DUMP is composed of two bits, NLM_F_ROOT | NLM_F_MATCH, when doing "if (x & NLM_F_DUMP)", it tests for _either_ of the bits being set. Because NLM_F_MATCH's value overlaps with NLM_F_EXCL, non-dump requests with NLM_F_EXCL set are mistaken as dump requests. Substitute the condition to test for _all_ bits being set. Signed-off-by: NJan Engelhardt <jengelh@medozas.de> Acked-by: NPablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 05 11月, 2010 1 次提交
-
-
由 Nelson Elhage 提交于
We were using nlmsg_find_attr() to look up the bytecode by attribute when auditing, but then just using the first attribute when actually running bytecode. So, if we received a message with two attribute elements, where only the second had type INET_DIAG_REQ_BYTECODE, we would validate and run different bytecode strings. Fix this by consistently using nlmsg_find_attr everywhere. Signed-off-by: NNelson Elhage <nelhage@ksplice.com> Signed-off-by: NThomas Graf <tgraf@infradead.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 24 9月, 2010 1 次提交
-
-
由 Eric Dumazet 提交于
Change "return (EXPR);" to "return EXPR;" return is not a function, parentheses are not required. Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 30 3月, 2010 1 次提交
-
-
由 Tejun Heo 提交于
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: NTejun Heo <tj@kernel.org> Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
-
- 20 1月, 2010 1 次提交
-
-
由 Roel Kluin 提交于
The s-port should be compared. Signed-off-by: NRoel Kluin <roel.kluin@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 19 10月, 2009 1 次提交
-
-
由 Eric Dumazet 提交于
In order to have better cache layouts of struct sock (separate zones for rx/tx paths), we need this preliminary patch. Goal is to transfert fields used at lookup time in the first read-mostly cache line (inside struct sock_common) and move sk_refcnt to a separate cache line (only written by rx path) This patch adds inet_ prefix to daddr, rcv_saddr, dport, num, saddr, sport and id fields. This allows a future patch to define these fields as macros, like sk_refcnt, without name clashes. Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 13 10月, 2009 1 次提交
-
-
由 Eric Dumazet 提交于
Storing the mask (size - 1) instead of the size allows fast path to be a bit faster. Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 18 6月, 2009 1 次提交
-
-
由 Eric Dumazet 提交于
commit 2b85a34e (net: No more expensive sock_hold()/sock_put() on each tx) changed initial sk_wmem_alloc value. We need to take into account this offset when reporting sk_wmem_alloc to user, in PROC_FS files or various ioctls (SIOCOUTQ/TIOCOUTQ) Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 28 4月, 2009 1 次提交
-
-
由 Arnaldo Carvalho de Melo 提交于
These are later assigned to other values without being used meanwhile. Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 24 11月, 2008 1 次提交
-
-
由 Eric Dumazet 提交于
This is the last step to be able to perform full RCU lookups in __inet_lookup() : After established/timewait tables, we add RCU lookups to listening hash table. The only trick here is that a socket of a given type (TCP ipv4, TCP ipv6, ...) can now flight between two different tables (established and listening) during a RCU grace period, so we must use different 'nulls' end-of-chain values for two tables. We define a large value : #define LISTENING_NULLS_BASE (1U << 29) So that slots in listening table are guaranteed to have different end-of-chain values than slots in established table. A reader can still detect it finished its lookup in the right chain. Signed-off-by: NEric Dumazet <dada1@cosmosbay.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 22 11月, 2008 1 次提交
-
-
由 David S. Miller 提交于
They are no longer a rwlocks. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 20 11月, 2008 1 次提交
-
-
由 Eric Dumazet 提交于
This patch prepares RCU migration of listening_hash table for TCP/DCCP protocols. listening_hash table being small (32 slots per protocol), we add a spinlock for each slot, instead of a single rwlock for whole table. This should reduce hold time of readers, and writers concurrency. Signed-off-by: NEric Dumazet <dada1@cosmosbay.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 17 11月, 2008 1 次提交
-
-
由 Eric Dumazet 提交于
RCU was added to UDP lookups, using a fast infrastructure : - sockets kmem_cache use SLAB_DESTROY_BY_RCU and dont pay the price of call_rcu() at freeing time. - hlist_nulls permits to use few memory barriers. This patch uses same infrastructure for TCP/DCCP established and timewait sockets. Thanks to SLAB_DESTROY_BY_RCU, no slowdown for applications using short lived TCP connections. A followup patch, converting rwlocks to spinlocks will even speedup this case. __inet_lookup_established() is pretty fast now we dont have to dirty a contended cache line (read_lock/read_unlock) Only established and timewait hashtable are converted to RCU (bind table and listen table are still using traditional locking) Signed-off-by: NEric Dumazet <dada1@cosmosbay.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 17 10月, 2008 1 次提交
-
-
由 Johannes Berg 提交于
Some code here depends on CONFIG_KMOD to not try to load protocol modules or similar, replace by CONFIG_MODULES where more than just request_module depends on CONFIG_KMOD and and also use try_then_request_module in ebtables. Signed-off-by: NJohannes Berg <johannes@sipsolutions.net> Signed-off-by: NRusty Russell <rusty@rustcorp.com.au> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 28 8月, 2008 1 次提交
-
-
由 Andi Kleen 提交于
Skip quickly over empty buckets in inet_diag. Signed-off-by: NAndi Kleen <ak@linux.intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 12 6月, 2008 1 次提交
-
-
由 Adrian Bunk 提交于
This patch removes CVS keywords that weren't updated for a long time from comments. Signed-off-by: NAdrian Bunk <bunk@kernel.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 01 2月, 2008 3 次提交
-
-
由 Pavel Emelyanov 提交于
Add a net argument to inet6_lookup and propagate it further. Actually, this is tcp-v6 implementation of what was done for tcp-v4 sockets in a previous patch. Signed-off-by: NPavel Emelyanov <xemul@openvz.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
由 Pavel Emelyanov 提交于
Add a net argument to inet_lookup and propagate it further into lookup calls. Plus tune the __inet_check_established. The dccp and inet_diag, which use that lookup functions pass the init_net into them. Signed-off-by: NPavel Emelyanov <xemul@openvz.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
由 Arnaldo Carvalho de Melo 提交于
Fixes: http://bugzilla.kernel.org/show_bug.cgi?id=9825 The inet_diag_lock_handler function uses ERR_PTR to encode errors but its callers were testing against NULL. This only happens when the only inet_diag modular user, DCCP, is not built into the kernel or available as a module. Also there was a problem with not dropping the mutex lock when a handler was not found, also fixed in this patch. This caused an OOPS and ss would then hang on subsequent calls, as &inet_diag_table_mutex was being left locked. Thanks to spike at ml.yaroslavl.ru for report it after trying 'ss -d' on a kernel that doesn't have DCCP available. This bug was introduced in cset d523a328 ("Fix inet_diag dead-lock regression"), after 2.6.24-rc3, so just 2.6.24 seems to be affected. Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Acked-by: NHerbert Xu <herbert@gondor.apana.org.au> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 29 1月, 2008 1 次提交
-
-
由 Denis V. Lunev 提交于
Create a specific helper for netlink kernel socket disposal. This just let the code look better and provides a ground for proper disposal inside a namespace. Signed-off-by: NDenis V. Lunev <den@openvz.org> Tested-by: NAlexey Dobriyan <adobriyan@openvz.org> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-
- 03 12月, 2007 1 次提交
-
-
由 Herbert Xu 提交于
The inet_diag register fix broke inet_diag module loading because the loaded module had to take the same mutex that's already held by the loader in order to register the new handler. This patch fixes it by introducing a separate mutex to protect the handling of handlers. Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
-
- 29 11月, 2007 1 次提交
-
-
由 Pavel Emelyanov 提交于
The following race is possible when one cpu unregisters the handler while other one is trying to receive a message and call this one: CPU1: CPU2: inet_diag_rcv() inet_diag_unregister() mutex_lock(&inet_diag_mutex); netlink_rcv_skb(skb, &inet_diag_rcv_msg); if (inet_diag_table[nlh->nlmsg_type] == NULL) /* false handler is still registered */ ... netlink_dump_start(idiagnl, skb, nlh, inet_diag_dump, NULL); cb = kzalloc(sizeof(*cb), GFP_KERNEL); /* sleep here freeing memory * or preempt * or sleep later on nlk->cb_mutex */ spin_lock(&inet_diag_register_lock); inet_diag_table[type] = NULL; ... spin_unlock(&inet_diag_register_lock); synchronize_rcu(); /* CPU1 is sleeping - RCU quiescent * state is passed */ return; /* inet_diag_dump is finally called: */ inet_diag_dump() handler = inet_diag_table[cb->nlh->nlmsg_type]; BUG_ON(handler == NULL); /* OOPS! While we slept the unregister has set * handler to NULL :( */ Grep showed, that the register/unregister functions are called from init/fini module callbacks for tcp_/dccp_diag, so it's OK to use the inet_diag_mutex to synchronize manipulations with the inet_diag_table and the access to it. Besides, as Herbert pointed out, asynchronous dumps should hold this mutex as well, and thus, we provide the mutex as cb_mutex one. Signed-off-by: NPavel Emelyanov <xemul@openvz.org> Signed-off-by: NHerbert Xu <herbert@gondor.apana.org.au>
-
- 07 11月, 2007 1 次提交
-
-
由 Eric Dumazet 提交于
As done two years ago on IP route cache table (commit 22c047cc) , we can avoid using one lock per hash bucket for the huge TCP/DCCP hash tables. On a typical x86_64 platform, this saves about 2MB or 4MB of ram, for litle performance differences. (we hit a different cache line for the rwlock, but then the bucket cache line have a better sharing factor among cpus, since we dirty it less often). For netstat or ss commands that want a full scan of hash table, we perform fewer memory accesses. Using a 'small' table of hashed rwlocks should be more than enough to provide correct SMP concurrency between different buckets, without using too much memory. Sizing of this table depends on num_possible_cpus() and various CONFIG settings. This patch provides some locking abstraction that may ease a future work using a different model for TCP/DCCP table. Signed-off-by: NEric Dumazet <dada1@cosmosbay.com> Acked-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
-