qemu/nbd
Vladimir Sementsov-Ogievskiy 0cfae925d2 nbd/server: refactor negotiation functions parameters
Instead of passing currently negotiating option and its length to
many of negotiation functions let's just store them on NBDClient
struct to be state-variables of negotiation phase.

This unifies semantics of negotiation functions and allows
tracking changes of remaining option length in future patches.

Asssert that optlen is back to 0 after negotiation (including
old-style connections which don't negotiate), although we need
more patches before we can assert optlen is 0 between options
during negotiation.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20171122101958.17065-2-vsementsov@virtuozzo.com>
[eblake: rebase, commit message tweak, assert !optlen after
negotiation completes]
Signed-off-by: Eric Blake <eblake@redhat.com>
2018-01-17 20:14:12 -06:00
..
Makefile.objs nbd: Split nbd.c 2016-01-15 18:58:02 +01:00
client.c nbd: rename nbd_option and nbd_opt_reply 2018-01-10 12:11:23 -06:00
common.c nbd: Expose constants and structs for structured read 2017-10-30 21:07:21 +01:00
nbd-internal.h nbd: Minimal structured read for client 2017-10-30 21:48:41 +01:00
server.c nbd/server: refactor negotiation functions parameters 2018-01-17 20:14:12 -06:00
trace-events nbd/server: Implement sparse reads atop structured reply 2018-01-08 09:12:23 -06:00