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path: root/sys/netinet/ip_carp.c
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2005-09-29Rework of multicast deletion code.Marco Pfatschbacher
The previous code could wrongly delete multicast groups on the parent interface. Now we forward only remembered delete requests to the carpdev. OK mcbride, mickey. "Get it in" deraadt.
2005-08-31Comment out KASSERT(mc != NULL) in carp_ether_delmulti. Because we mess withRyan Thomas McBride
the multicast list elsewhere, it can occur under certain conditions (PR4475). ok deraadt@ mpf@
2005-07-31Introduce bpf_mtap_af and bpf_mtap_hdr to be used when passing a mbuf chainChristopher Pascoe
to bpf with either an address family or other header added. These helpers only allocate a much smaller struct m_hdr on the stack when needed, rather than leaving 256 byte struct mbufs on the stack in deep call paths. Also removes a fair bit of duplicated code. commit now, tune after deraadt@
2005-06-19Don't reflect CARP's internal state via IFF_UP (which a user can modify), useChristopher Pascoe
IFF_RUNNING instead. Also, do not blindly restore flags onto an interface when returning to the running state. This eliminates the possibility that the kernel will bring the interface back up after a link state change on the physical interface, even though the user may have done an "ifconfig carpN down" in the meantime. Similarly two link state down events on the physical interface in succession could result in us never coming out of the INIT state. The master/backup state is still reported via link state information, so bgpd/ospfd, etc, should function as before. This also addresses PR4238. ok mpf@, ok with the idea etc henning@
2005-05-27only access if_linkstatehooks inside splnet.Marco Pfatschbacher
with pascoe@
2005-04-20Introduce if_linkstatehooks.Marco Pfatschbacher
This converts if_link_state_change() to a generic usable callback with dohooks(). OK henning@, camield@ Tested by camield@ and Alexey E. Suslikov
2005-03-15- stop tearing down routes when the carp interface goes to backup in theRyan Thomas McBride
carpdev case; block outgoing packets in carp_output() instead. - unbreak the "bow out on 'ifconfig down'" behaviour, allows instant failover on graceful halt/reboot to work again. ok mpf@ henning@
2005-03-13fix a potential crash that could occur when CARP_LOG is being used.Patrick Latifi
ok mcbride
2005-03-05Remove code which enforces a advskew=0 for the caseMarco Pfatschbacher
that carp shares the IP addresse with its physical interface. It's neither supported nor needed, since we have carpdev now. ok mcbride@
2005-03-01Unbreak arp_input with carp; add back the call to carp_iamatch()Ryan Thomas McBride
which was removed in rev 1.57. This makes arpbalance work again, and ensures that only one carp host will reply to a given arp request. ok mpf@ pascoe@ dhartmei@ deraadt@
2005-02-28Remove unused variable if_flags in struct carp_softc, ok mickey@Ryan Thomas McBride
2005-02-08build w/o INET6; ok mpf@, mcbride@Markus Friedl
2005-02-07Unrevert the changes introduced in 1.96 and accidentally removed in 1.97Ryan Thomas McBride
with an id10t error by yours truly.
2005-02-07Prevent carp from attaching to other carp interfaces, which theRyan Thomas McBride
ifp->if_flags & IFF_MULTICAST checks no longer protect against. ok pascoe@ mpf@
2005-02-07There is no SIOCDIFADDR call into interfaces on address deletion, soChristopher Pascoe
use our carp_addr_updated callback to detect deletion and reconfigure appropriately. ok mcbride@
2005-01-29Check the carpdev link state when we attach to it, makes a firewallRyan Thomas McBride
with an interface down avoid preempting after a reboot. Pointed out by Stephen Marley <stephen.marley@catwoman.cl-is.com> ok pascoe@ mpf@
2005-01-18Rewriting the lladdr can now be done without using mbuf tags.Marco Pfatschbacher
Advertisements run through the carp interface first. So we just take the address from ifp0. While we're there, also remove carp_macmatch6, which isn't used anymore. Proposed by mcbride@ ok mcbride@, pascoe@
2005-01-06spacingTheo de Raadt
2005-01-06Attach multicast to the carp interface for IPv6 (makes it consistent withRyan Thomas McBride
IPv4, and will allow us to get rid of carp_fix_lladdr() and the carp mbuf tag later). ok pascoe@ mpf@
2005-01-06Error path cleanups for carp_output. Use ENOBUFS instead of ENOMEM whenChristopher Pascoe
unable to tag a packet, and free mbuf chain on all failures. ok mcbride@
2005-01-06Tag all packets sent via a CARP interface for link local addressChristopher Pascoe
substitution. With this change and the previous ARP changes, all Ethernet packets sent via a CARP interface should now have the virtual MAC address as the source. ok mcbride@ niklas@
2005-01-04Move processing of ARP packets for CARP addresses to the carp interfaceChristopher Pascoe
instead of processing them in the parent interface. This causes us to send ARP packets on a carpdev with its virtual MAC address as the source, rather than the parent's physical address. Permits us to fail over cleanly when connected to devices that use the source MAC address on a received ARP request to generate an ARP entry for the requesting host, rather than going through the who-has/is-at procedure. ok niklas@ mcbride@
2004-12-22Instead of running carp_setroute synchronously, use if_addrhooks to get aChristopher Pascoe
callback after in_ifinit has run. This lets us correct any routes that in_ifinit has incorrectly added for our interface. Also be more explicit with the routing checks/changes that we make. This makes it possible to have different prefix lengths on a CARP interface and the physical interface it is bound to. ok mcbride@
2004-12-19#define sc_if sc_ac.ac_if, makes things a little more readable, andRyan Thomas McBride
kills a couple of ugly line wraps. From Max Laier. ok pascoe@
2004-12-19Make it possible for carp to work on fddi and token ring again.Ryan Thomas McBride
ok pascoe@ mpf@
2004-12-18Decrement carp_suppress_preempt when detaching an interface that hasChristopher Pascoe
been experiencing output errors. ok mcbride@
2004-12-17Temporary fix to get IPv6 working again.Marco Pfatschbacher
v6 advertisements are still received the old-fashioned way. ok mcbride@
2004-12-17Reorder code in the ethernet output path, and enhance unicast addressChristopher Pascoe
matching in the bridge receive path to make CARP operate correctly on physical interfaces that are participating in a bridge. ok mcbride@ henning@ dlg@
2004-12-17Remember to decrement carp_suppress_preempt when detaching.Ryan Thomas McBride
ok pascoe@
2004-12-15Add IFF_NOARP to carp interface, we want arp requests to be handled viaRyan Thomas McBride
carp_iamatch() on the physical interface. ok pascoe@ mpf@
2004-12-15* fix the multicast memberships removalPatrick Latifi
* less hardcoding in format strings for easier maintenance mcbride ok
2004-12-10Add carp_set_enaddr(), call carp_set_state() after changing the vhidRyan Thomas McBride
to trigger a gratuitous arp and update arp tables on other hosts.
2004-12-10Rename carp_output() to carp_fix_lladdr().Ryan Thomas McBride
2004-12-08* knfPatrick Latifi
* M_WAITOK -> M_NOWAIT * FREE() only when necessary * join_multicast6 for ip6 addresses mcbride ok
2004-12-08Remove code duplication duplication. Use carpdetach() in carp_clone_destroy().Ryan Thomas McBride
2004-12-08Merge in more fixes from a pre-carpdev diff from Chris Pascoe.Ryan Thomas McBride
2004-12-08Check if_type in carp_carpdev_state() to make sure we're notRyan Thomas McBride
dealing with a carp interface.
2004-12-07Convert carp(4) to behave more like a regular interface, much in the sameRyan Thomas McBride
style as vlan(4). carp interfaces no longer require the physical interface to be on the same subnet as the carp interface, or even that the physical interface has an adress at all, so CARP can now be used on /30 networks. ok deraadt@ henning@
2004-11-30Use %s, not %d to print the interface name. From Max Laier.Ryan Thomas McBride
2004-11-28Reverse bogus sc == NULL check in CARP_LOG(), from Max Laier.Ryan Thomas McBride
2004-11-17Improved logging for advertisement failures: Add some carpstats.carps_onomem++Ryan Thomas McBride
when sending advertisements fail due to ENOBUGS, and some CARP_LOG for other failures. From camield@
2004-11-16Call arprequest/ether_output at splsoftnet(). From Chris Pascoe.Ryan Thomas McBride
ok henning@
2004-10-28define IFT_CARP, and set if_type to that on carp interfaces insteadHenning Brauer
of hiding under IFT_PROPVIRTUAL, ryan daniel ok
2004-10-06Unbreak tcpdump on the carp interface; variable shadowing pointed out byRyan Thomas McBride
Patrick Latifi (diff based on his).
2004-10-05Call ip_output at splsoftnet() when sending advertisements; also don't stopRyan Thomas McBride
sending advertisements if we can't tag the mbuf. Problem report and fix from Chris Pascoe, thanks. ok henning@
2004-09-18Oops, copy a pointer to ac_if, not the first bytes of the struct itself.Ryan Thomas McBride
Actually this doesn't matter right now, as the first bytes of struct ifnet are a pointer to the softc, which has ac_if at the beginning and thus by fluke the pointer is correct. This also makes the sc to ifp conversion for carp_macmatch6().
2004-09-18Store the carp interface ifp in PACKET_TAG_CARP instead of a pointer toRyan Thomas McBride
carp_softc.
2004-09-16Clean up CARP_LOG macro and include the physical interfaceRyan Thomas McBride
that bogus packets arrive on.
2004-08-31Prevent backup CARP hosts from replying to arp requests, fixes strangenessRyan Thomas McBride
with some layer-3 switches. From Bill Marquette. ok henning@ mickey@ dhartmei@ and deraadt@
2004-06-24This moves access to wall and uptime variables in MI code,Thorsten Lockert
encapsulating all such access into wall-defined functions that makes sure locking is done as needed. It also cleans up some uses of wall time vs. uptime some places, but there is sure to be more of these needed as well, particularily in MD code. Also, many current calls to microtime() should probably be changed to getmicrotime(), or to the {,get}microuptime() versions. ok art@ deraadt@ aaron@ matthieu@ beck@ sturm@ millert@ others "Oh, that is not your problem!" from miod@
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