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Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Andreas Schneider <asn@cryptomilk.org>
Autobuild-Date(master): Thu Nov 8 11:03:11 CET 2018 on sn-devel-144
The system_<os>.c files contain a lot of duplication, making
maintenance difficult. These functions are being merged into
system_socket.c and system.c.
Bring across ctdb_sys_open_capture_socket(),
ctdb_sys_close_capture_socket() and ctdb_sys_read_tcp_packet().
Remove empty system_<os>.c files.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The system_<os>.c files contain a lot of duplication, making
maintenance difficult. These functions are being merged into
system_socket.c and system.c.
Bring across tcp_checksum(), renamed to ip_checksum().
uint16_checksum() becomes static.
Use the BSD struct tcphdr field names for portability. See the
comment in the code for more details about how we get this to compile
on older glibc versions.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This avoids other potential users from unnecessarily setting up file
descriptors and such.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This replaces ctdb_killtcp(), which did the initialisation inside a
loop. The new logic is inverted, making it more natural.
The variable containing all the state is called "state" in
anticipation of the next commit that will convert this to a tevent_req
computation. This will mean less churn.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
One less use of trbt_tree_t. The code is easier to read and is
significantly smaller.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Testing indicates that these are good reliable defaults that can kill
many connections in a reasonable amount of time.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Autobuild-User(master): Amitay Isaacs <amitay@samba.org>
Autobuild-Date(master): Fri Apr 1 08:10:54 CEST 2016 on sn-devel-144
This made sense when connections were individually queued in the
daemon. However, they're now done in batch so just keep an overall
count.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
When previously killing TCP connections via the daemon there was some
latency due to each kill being sent to the daemon via a separate
control. This probably meant that when doing a 2-way kill the tickle
ACKs sent to the client end of a connection would not interfere with
listening for the reply ACK from the server end. Now that there is no
latency, the tickle ACK or RST sent to the client end can be seen as
the reply to the server end tickle ACK, and vice-versa.
To avoid this, throw away packets that look like we sent them.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The end of the connection in parentheses is not the end being killed.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
Since they're being done in batch, just schedule an event to traverse
all the connections.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
The handler won't be called unless there is something to read.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
This will allow killing of TCP connections without daemon involvement.
It looks strange that the common code for daemon and helper is in the
server directory. Having it in the server directory means less
temporary changes to the build configuration. This code will move
into the helper itself and will no longer be used by the daemon.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
