path: root/net/rxrpc/net_ns.c
AgeCommit message (Collapse)Author
2017-11-24rxrpc: Fix conn expiry timersDavid Howells
Fix the rxrpc connection expiry timers so that connections for closed AF_RXRPC sockets get deleted in a more timely fashion, freeing up the transport UDP port much more quickly. (1) Replace the delayed work items with work items plus timers so that timer_reduce() can be used to shorten them and so that the timer doesn't requeue the work item if the net namespace is dead. (2) Don't use queue_delayed_work() as that won't alter the timeout if the timer is already running. (3) Don't rearm the timers if the network namespace is dead. Signed-off-by: David Howells <dhowells@redhat.com>
2017-11-24rxrpc: Fix service endpoint expiryDavid Howells
RxRPC service endpoints expire like they're supposed to by the following means: (1) Mark dead rxrpc_net structs (with ->live) rather than twiddling the global service conn timeout, otherwise the first rxrpc_net struct to die will cause connections on all others to expire immediately from then on. (2) Mark local service endpoints for which the socket has been closed (->service_closed) so that the expiration timeout can be much shortened for service and client connections going through that endpoint. (3) rxrpc_put_service_conn() needs to schedule the reaper when the usage count reaches 1, not 0, as idle conns have a 1 count. (4) The accumulator for the earliest time we might want to schedule for should be initialised to jiffies + MAX_JIFFY_OFFSET, not ULONG_MAX as the comparison functions use signed arithmetic. (5) Simplify the expiration handling, adding the expiration value to the idle timestamp each time rather than keeping track of the time in the past before which the idle timestamp must go to be expired. This is much easier to read. (6) Ignore the timeouts if the net namespace is dead. (7) Restart the service reaper work item rather the client reaper. Signed-off-by: David Howells <dhowells@redhat.com>
2017-06-04rxrpc: remove redundant proc_remove callColin Ian King
The proc_remove call is dead code as it occurs after a return and hence can never be called. Remove it. Detected by CoverityScan, CID#1437743 ("Logically dead code") Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-25rxrpc: Support network namespacingDavid Howells
Support network namespacing in AF_RXRPC with the following changes: (1) All the local endpoint, peer and call lists, locks, counters, etc. are moved into the per-namespace record. (2) All the connection tracking is moved into the per-namespace record with the exception of the client connection ID tree, which is kept global so that connection IDs are kept unique per-machine. (3) Each namespace gets its own epoch. This allows each network namespace to pretend to be a separate client machine. (4) The /proc/net/rxrpc_xxx files are now called /proc/net/rxrpc/xxx and the contents reflect the namespace. fs/afs/ should be okay with this patch as it explicitly requires the current net namespace to be init_net to permit a mount to proceed at the moment. It will, however, need updating so that cells, IP addresses and DNS records are per-namespace also. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>