- 28 Jan, 2008 40 commits
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Eric Dumazet authored
Avoid an expensive divide (as done in commit 18030477e70a826b91608aee40a987bbd368fec6 but lost in commit 23821d2653111d20e75472c8c5003df1a55309a8) Signed-off-by:
Eric Dumazet <dada1@cosmosbay.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Ilpo Järvinen authored
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Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by:
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Ilpo Järvinen authored
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Ilpo Järvinen authored
These were manually selected from indent's results which as is are too noisy to be of any use without human reason. In addition, some extra newlines between function and its comment were removed too. Signed-off-by:
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Ilpo Järvinen authored
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Ilpo Järvinen authored
The snd_up check should be enough. I suspect this has been there to provide a minor optimization in clean_rtx_queue which used to have a small if (!->sacked) block which could skip snd_up check among the other work. Signed-off-by:
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Ilpo Järvinen authored
SACK reneging can be precalculated to a FLAG in clean_rtx_queue which has the right skb looked up. This will help a bit in future because skb->sacked access will be changed eventually, changing it already won't hurt any. Signed-off-by:
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Ilpo Järvinen authored
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Ilpo Järvinen authored
There's very little need to have the packets_out incrementing in a separate function. Also name the combined function appropriately. Signed-off-by:
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Ilpo Järvinen authored
Earlier resolution for NewReno's sacked_out should now keep it small enough for this to become invariant-like check. Signed-off-by:
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Rami Rosen authored
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Rami Rosen <ramirose@gmail.com> Signed-off-by:
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Hideo Aoki authored
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Takahiro Yasui <tyasui@redhat.com> Signed-off-by:
Hideo Aoki <haoki@redhat.com> Signed-off-by:
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Hideo Aoki authored
This patch introduces new memory accounting functions for each network protocol. Most of them are renamed from memory accounting functions for stream protocols. At the same time, some stream memory accounting functions are removed since other functions do same thing. Renaming: sk_stream_free_skb() -> sk_wmem_free_skb() __sk_stream_mem_reclaim() -> __sk_mem_reclaim() sk_stream_mem_reclaim() -> sk_mem_reclaim() sk_stream_mem_schedule -> __sk_mem_schedule() sk_stream_pages() -> sk_mem_pages() sk_stream_rmem_schedule() -> sk_rmem_schedule() sk_stream_wmem_schedule() -> sk_wmem_schedule() sk_charge_skb() -> sk_mem_charge() Removeing sk_stream_rfree(): consolidates into sock_rfree() sk_stream_set_owner_r(): consolidates into skb_set_owner_r() sk_stream_mem_schedule() The following functions are added. sk_has_account(): check if the protocol supports accounting sk_mem_uncharge(): do the opposite of sk_mem_charge() In addition, to achieve consolidation, updating sk_wmem_queued is removed from sk_mem_charge(). Next, to consolidate memory accounting functions, this patch adds memory accounting calls to network core functions. Moreover, present memory accounting call is renamed to new accounting call. Finally we replace present memory accounting calls with new interface in TCP and SCTP. Signed-off-by: -
Gui Jianfeng authored
There are useless codes in fib6_del_route(). The following patch has been tested, every thing looks fine, as usual. Signed-off-by:
Gui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by:
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Rami Rosen authored
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Rami Rosen authored
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Jorge Boncompte authored
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Jorge Boncompte <jorge@dti2.net> Signed-off-by:
Chas Williams <chas@cmf.nrl.navy.mil> Signed-off-by:
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Joonwoo Park authored
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Joonwoo Park <joonwpark81@gmail.com> Signed-off-by:
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Chas Williams authored
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Eric Kinzie authored
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Adrian Bunk authored
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Adrian Bunk <bunk@stusta.de> Signed-off-by:
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Kay Sievers authored
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Kay Sievers <kay.sievers@vrfy.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by:
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Robert P. J. Day authored
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Herbert Xu authored
Let's nip the code duplication in the bud :) Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Herbert Xu authored
When netfilter is off the transport-mode async resumption doesn't work because we don't push back the IP header. This patch fixes that by moving most of the code outside of ifdef NETFILTER since the only part that's not common is the short-circuit in the protocol handler. Signed-off-by:
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Herbert Xu authored
When the output transform returns EINPROGRESS due to async operation we'll free the skb the straight away as if it were an error. This patch fixes that so that the skb is freed when the async operation completes. Signed-off-by:
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David S. Miller authored
Reported by Denis V. Lunev Signed-off-by: -
Masahide NAKAMURA authored
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Masahide NAKAMURA <nakam@linux-ipv6.org> Signed-off-by:
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Ilpo Järvinen authored
While checking Gavin's patch I noticed that the returned seq_rtt is not used by the caller. Signed-off-by:
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Ilpo Järvinen authored
If snd_wnd - snd_nxt wasn't multiple of MSS, skb was split on odd boundary by the callers of tcp_window_allows. We try really hard to avoid unnecessary modulos. Therefore the old caller side check "if (skb->len < limit)" was too wide as well because limit is not bound in any way to skb->len and can cause spurious testing for trimming in the middle of the queue while we only wanted that to happen at the tail of the queue. A simple additional caller side check for tcp_write_queue_tail would likely have resulted 2 x modulos because the limit would have to be first calculated from window, however, doing that unnecessary modulo is not mandatory. After a minor change to the algorithm, simply determine first if the modulo is needed at all and at that point immediately decide also from which value it should be calculated from. This approach also kills some duplicated code. Signed-off-by:
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Michael Chan authored
print_mac() used many most net drivers and format_addr() used by net-sysfs.c are very similar and they can be intergrated. format_addr() is also identically redefined in the qla4xxx iscsi driver. Export a new function sysfs_format_mac() to be used by net-sysfs, qla4xxx and others in the future. Both print_mac() and sysfs_format_mac() call _format_mac_addr() to do the formatting. Changed print_mac() to use unsigned char * to be consistent with net_device struct's dev_addr. Added buffer length overrun checking as suggested by Joe Perches. Signed-off-by:
Michael Chan <mchan@broadcom.com> Signed-off-by:
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Eric Dumazet authored
sk_forward_alloc being signed, we should take care of divides by SK_STREAM_MEM_QUANTUM we do in sk_stream_pages() and __sk_stream_mem_reclaim() This patchs introduces SK_STREAM_MEM_QUANTUM_SHIFT, defined as ilog2(SK_STREAM_MEM_QUANTUM), to be able to use right shifts instead of plain divides. This should help compiler to choose right shifts instead of expensive divides (as seen with CONFIG_CC_OPTIMIZE_FOR_SIZE=y on x86) Signed-off-by:
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Masahide NAKAMURA authored
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Eric W. Biederman authored
I'm actually surprised at how much was involved. At first glance it appears that the neighbour table data structures are already split by network device so all that should be needed is to modify the user interface commands to filter the set of neighbours by the network namespace of their devices. However a couple things turned up while I was reading through the code. The proxy neighbour table allows entries with no network device, and the neighbour parms are per network device (except for the defaults) so they now need a per network namespace default. So I updated the two structures (which surprised me) with their very own network namespace parameter. Updated the relevant lookup and destroy routines with a network namespace parameter and modified the code that interacts with users to filter out neighbour table entries for devices of other namespaces. I'm a little concerned that we can modify and display the global table configuration and from all network namespaces. But this appears good enough for now. I keep thinking modifying the neighbour table to have per network namespace instances of each table type would should be cleaner. The hash table is already dynamically sized so there are it is not a limiter. The default parameter would be straight forward to take care of. However when I look at the how the network table is built and used I still find some assumptions that there is only a single neighbour table for each type of table in the kernel. The netlink operations, neigh_seq_start, the non-core network users that call neigh_lookup. So while it might be doable it would require more refactoring than my current approach of just doing a little extra filtering in the code. Signed-off-by:
Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by:
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Paul Moore authored
According to RFC4303, section 3.3.3 we need to drop outgoing packets which cause the replay counter to overflow: 3.3.3. Sequence Number Generation The sender's counter is initialized to 0 when an SA is established. The sender increments the sequence number (or ESN) counter for this SA and inserts the low-order 32 bits of the value into the Sequence Number field. Thus, the first packet sent using a given SA will contain a sequence number of 1. If anti-replay is enabled (the default), the sender checks to ensure that the counter has not cycled before inserting the new value in the Sequence Number field. In other words, the sender MUST NOT send a packet on an SA if doing so would cause the sequence number to cycle. An attempt to transmit a packet that would result in sequence number overflow is an auditable event. The audit log entry for this event SHOULD include the SPI value, current date/time, Source Address, Destination Address, and (in IPv6) the cleartext Flow ID. Signed-off-by:
Paul Moore <paul.moore@hp.com> Acked-by:
James Morris <jmorris@namei.org> Signed-off-by:
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Paul Moore authored
This patch adds a number of new IPsec audit events to meet the auditing requirements of RFC4303. This includes audit hooks for the following events: * Could not find a valid SA [sections 2.1, 3.4.2] . xfrm_audit_state_notfound() . xfrm_audit_state_notfound_simple() * Sequence number overflow [section 3.3.3] . xfrm_audit_state_replay_overflow() * Replayed packet [section 3.4.3] . xfrm_audit_state_replay() * Integrity check failure [sections 3.4.4.1, 3.4.4.2] . xfrm_audit_state_icvfail() While RFC4304 deals only with ESP most of the changes in this patch apply to IPsec in general, i.e. both AH and ESP. The one case, integrity check failure, where ESP specific code had to be modified the same was done to the AH code for the sake of consistency. Signed-off-by:
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Eric Dumazet authored
tcp_win_from_space() being signed, compiler might emit an integer divide to compute tcp_win_from_space()/2 . Using right shifts is OK here and less expensive. Signed-off-by:
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Eric Dumazet authored
tcp_mtu_to_mss() being signed, compiler might emit an integer divide to compute tcp_mtu_to_mss()/2 . Using a right shift is OK here and less expensive. Signed-off-by:
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David S. Miller authored
Down into the only scope where it is used. Signed-off-by: -
Eric Dumazet authored
Because sk_wmem_queued, sk_sndbuf are signed, a divide per two may force compiler to use an integer divide. We can instead use a right shift. Signed-off-by:
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