- 28 Jan, 2008 40 commits
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Michael Chan authored
If the MTU requires more than 1 page for the SKB, enable the page ring and calculate the size of the page ring. This will guarantee order-0 allocation regardless of the MTU size. Fixup loopback test packet size so that we don't deal with the pages during loopback test. Signed-off-by:
Michael Chan <mchan@broadcom.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Michael Chan authored
Add function to reuse a page in case of allocation or other errors. Add code to construct the completed SKB with the additional data in the pages. Signed-off-by:
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Michael Chan authored
Add new fields to keep track of the pages and the page rings. Add functions to allocate and free pages. Signed-off-by:
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Michael Chan authored
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Michael Chan authored
Factor out the common functions that will be used to initialize the normal RX rings and the page rings. Change the copybreak constant RX_COPY_THRESH to 128. This same constant will be used for the max. size of the linear SKB when pages are used. Copybreak will be turned off when pages are used. Signed-off-by:
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Michael Chan authored
Add a new function to handle new SKB allocation and to prepare the completed SKB. This makes it easier to add support for non-linear SKB. Signed-off-by:
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Michael Chan authored
Define the various ring constants to make the code cleaner. Signed-off-by:
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Andrew Morton authored
Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Michal Schmidt authored
Once created, an IP tunnel can't be bound to another device. (reported as https://bugzilla.redhat.com/show_bug.cgi?id=419671) To reproduce: # create a tunnel: ip tunnel add tunneltest0 mode ipip remote 10.0.0.1 dev eth0 # try to change the bounding device from eth0 to eth1: ip tunnel change tunneltest0 dev eth1 # show the result: ip tunnel show tunneltest0 tunneltest0: ip/ip remote 10.0.0.1 local any dev eth0 ttl inherit Notice the bound device has not changed from eth0 to eth1. This patch fixes it. When changing the binding, it also recalculates the MTU according to the new bound device's MTU. If the change is acceptable, I'll do the same for GRE and SIT tunnels. Signed-off-by:
Michal Schmidt <mschmidt@redhat.com> Signed-off-by:
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Pavel Emelyanov authored
The LOOPBACK_OVERHEAD is not used in this file at all. Signed-off-by:
Pavel Emelyanov <xemul@openvz.org> Signed-off-by:
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Denis V. Lunev authored
Signed-off-by:
Denis V. Lunev <den@openvz.org> Signed-off-by:
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Harvey Harrison authored
X86_32 was the last user of the FASTCALL macro, now that it uses regparm(3) by default, this macro expands to nothing. Signed-off-by:
Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by:
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Herbert Xu authored
RFC 4301 requires us to relookup ICMP traffic that does not match any policies using the reverse of its payload. This patch implements this for ICMP traffic that originates from or terminates on localhost. This is activated on outbound with the new policy flag XFRM_POLICY_ICMP, and on inbound by the new state flag XFRM_STATE_ICMP. On inbound the policy check is now performed by the ICMP protocol so that it can repeat the policy check where necessary. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Herbert Xu authored
RFC 4301 requires us to relookup ICMP traffic that does not match any policies using the reverse of its payload. This patch adds the functions xfrm_decode_session_reverse and xfrmX_policy_check_reverse so we can get the reverse flow to perform such a lookup. Signed-off-by:
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Herbert Xu authored
This patch introduces an enum for bits in the flags argument of xfrm_lookup. This is so that we can cram more information into it later. Since all current users use just the values 0 and 1, XFRM_LOOKUP_WAIT has been added with the value 1 << 0 to represent the current meaning of flags. The test in __xfrm_lookup has been changed accordingly. Signed-off-by:
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Gerrit Renker authored
Signed-off-by:
Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by:
Ian McDonald <ian.mcdonald@jandi.co.nz> Signed-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
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Gerrit Renker authored
This hooks up the TFRC Loss Interval database with CCID 3 packet reception. In addition, it makes the CCID-specific computation of the first loss interval (which requires access to all the guts of CCID3) local to ccid3.c. The patch also fixes an omission in the DCCP code, that of a default / fallback RTT value (defined in section 3.4 of RFC 4340 as 0.2 sec); while at it, the upper bound of 4 seconds for an RTT sample has been reduced to match the initial TCP RTO value of 3 seconds from[RFC 1122, 4.2.3.1]. Signed-off-by:
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Gerrit Renker authored
This moves two inlines back to packet_history.h: these are not private to packet_history.c, but are needed by CCID3/4 to detect whether a new loss is indicated, or whether a loss is already pending. Signed-off-by:
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Gerrit Renker authored
Each time feedback is sent two lines are printed: ccid3_hc_rx_send_feedback: client ... - entry ccid3_hc_rx_send_feedback: Interval ...usec, X_recv=..., 1/p=... The first line is redundant and thus removed. Further, documentation of ccid3_hc_rx_sock (capitalisation) is made consistent. Signed-off-by:
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Gerrit Renker authored
A ringbuffer-based implementation of loss interval history is easier to maintain, allocate, and update. The `swap' routine to keep the RX history sorted is due to and was written by Arnaldo Carvalho de Melo, simplifying an earlier macro-based variant. Details: * access to the Loss Interval Records via macro wrappers (with safety checks); * simplified, on-demand allocation of entries (no extra memory consumption on lossless links); cache allocation is local to the module / exported as service; * provision of RFC-compliant algorithm to re-compute average loss interval; * provision of comprehensive, new loss detection algorithm - support for all cases of loss, including re-ordered/duplicate packets; - waiting for NDUPACK=3 packets to fill the hole; - updating loss records when a late-arriving packet fills a hole. Signed-off-by:
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Gerrit Renker authored
This moves the inlines (which were previously declared as macros) back into packet_history.h since the loss detection code needs to be able to read entries from the RX history in order to create the relevant loss entries: it needs at least tfrc_rx_hist_loss_prev() and tfrc_rx_hist_last_rcv(), which in turn require the definition of the other inlines (macros). Signed-off-by:
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Gerrit Renker authored
This separates RX/TX initialisation and puts all packet history / loss intervals initialisation into tfrc.c. The organisation is uniform: slab declaration -> {rx,tx}_init() -> {rx,tx}_exit() Signed-off-by: -
Denis V. Lunev authored
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Denis V. Lunev authored
Recently David Miller and Herbert Xu pointed out that struct net becomes overbloated and un-maintainable. There are two solutions: - provide a pointer to a network subsystem definition from struct net. This costs an additional dereferrence - place sub-system definition into the structure itself. This will speedup run-time access at the cost of recompilation time The second approach looks better for us. Other sub-systems will follow. Signed-off-by:
Daniel Lezcano <dlezcano@fr.ibm.com> Signed-off-by:
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Denis V. Lunev authored
Signed-off-by:
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Daniel Lezcano authored
This patchset makes the different protocols to return an error code, so the af_inet6 module can check the initialization was correct or not. The raw6 was taken into account to be consistent with the rest of the protocols, but the registration is at the same place. Because the raw6 has its own init function, the proto and the ops structure can be moved inside the raw6.c file. Signed-off-by:
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Daniel Lezcano authored
This patch makes the inet6_register_protosw to return an error code. The different protocols can be aware the registration was successful or not and can pass the error to the initial caller, af_inet6. Signed-off-by:
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Daniel Lezcano authored
This patch makes the frag_init to return an error code, so the af_inet6 module can handle the error. Signed-off-by:
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Daniel Lezcano authored
This patch factorize the code for the differents init functions for rthdr, nodata, destopt in a single function exthdrs_init. This function returns an error so the af_inet6 module can check correctly the initialization. Signed-off-by:
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Daniel Lezcano authored
This patch makes the flowlab subsystem to return an error code and makes some cleanup with procfs ifdefs. The af_inet6 will use the flowlabel init return code to check the initialization was correct. Signed-off-by:
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Pavel Emelyanov authored
This includes: * moving neigh_sysctl_(un)register calls inside devinet_sysctl_(un)register ones, as they are always called in pairs; * making __devinet_sysctl_unregister() to unregister the ipv4_devconf struct, while original devinet_sysctl_unregister() works with the in_device to handle both - devconf and neigh sysctls; * make stubs for CONFIG_SYSCTL=n case to get rid of in-code ifdefs. Signed-off-by:
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Pavel Emelyanov authored
This is essentially IN_DEV_ANDCONF with proper arguments. Signed-off-by:
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Pavel Emelyanov authored
Make the INET_TWDR_TWKILL_SLOTS vs sizeof(twdr->thread_slots) check nicer. Signed-off-by:
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Pavel Emelyanov authored
The sizeof(struct tcp_skb_cb) should not be less than the sizeof(skb->cb). This is checked in net/ipv4/tcp.c, but this check can be made more gracefully. Signed-off-by:
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Eric Dumazet authored
nl_pid_hash_alloc() is renamed to nl_pid_hash_zalloc(). It is now returning zeroed memory to its callers. Signed-off-by:
Eric Dumazet <dada1@cosmosbay.com> Signed-off-by:
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Eric Dumazet authored
This cleanup shrinks size of net/core/dst.o on i386 from 1299 to 1289 bytes. (This is because dev_hold()/dev_put() are doing atomic_inc()/atomic_dec() and force compiler to re-evaluate memory contents.) Signed-off-by:
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Herbert Xu authored
This patch adds the xfrm_input_state helper function which returns the current xfrm state being processed on the input path given an sk_buff. This is currently only used by xfrm_input but will be used by ESP upon asynchronous resumption. Signed-off-by:
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Gerrit Renker authored
Signed-off-by:
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Gerrit Renker authored
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Gerrit Renker authored
Moved up the comment "Receiver routines" above the first occurrence of RX history routines. Signed-off-by:
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