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authorPaul Jakma <paul.jakma@sun.com>2007-02-22 17:48:42 +0000
committerPaul Jakma <paul.jakma@sun.com>2007-02-22 17:48:42 +0000
commitf2c31acb6f97688af0f368211536829324145919 (patch)
tree6f9887992eeb0890fdf673f9c0794e7d1384edbb /bgpd/.cvsignore
parent553bdfe376c49886cbdc2d306fea7b003bead31f (diff)
[bgpd] Peer delete can race with reconfig leading to crash
2007-02-22 Paul Jakma <paul.jakma@sun.com> * bgp_fsm.c: (bgp_fsm_change_status) Handle state change into clearing or greater here. Simpler. (bgp_event) Clearing state change work moved to previous * bgp_route.c: (bgp_clear_route_node) Clearing adj-in here is too late, as it leaves a race between a peer being deleted and an identical peer being configured before clearing completes, leading to a crash. Simplest fix is to clean peers Adj-in up-front, rather than queueing such work. (bgp_clear_route_table) Clear peer's Adj-In and Adj-Out up-front here, rather than queueing such work. Extensive comment added on the various bits of indexed data that exist and how they need to be dealt with. (bgp_clear_route) Update comment.
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