Previously COMPAREANDWRITE was only sending verify instance data which
can cause targets to generate COMMAND ABORTED/NOT ENOUGH UNSOLICITED
DATA errors due to the buffer being obviously too small to contain
verify AND write instance data.
The buffer size check has been modified and compareandwrite tests
updated to pass a larger buffer with interesting write instance data.
The iSCSI protocol adds padding to a data packet if the data size is not
a multiple of four. The iovector provided by QEMU does not include such
padding, and libiscsi then complains that there was a protocol error.
This patch fixes this by reading the padding in a separate "recv"
system call. These packets anyway do not happen in the data path,
where the packet size is a multiple of 512.
This fixes QEMU's scsi-generic backend, which triggered the problem when
the target sent a 66-byte INQUIRY response.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
scsi_set_uint64 should just use scsi_set_uint32, similar to
what scsi_get_uint64 does. This avoids problems on architectures
where "uint32_t" requires more alignment than "char", e.g. ARM.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The ABI version was changed many times since the first release, but no
one noticed. Now that I am packaging a newer version of libiscsi
I need to bump the soname from 1 to 2, which will be (posthumously)
the ABI for 1.9.0. Declare the next version to have ABI version 3.
Please do not hesitate to ask for review of header-file patches to
catch ABI changes (which should be avoided!).
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This patch finally introduces a small allocation pool
which recycles all the small portions of memory that
are used for headers and pdu structures. This was
the initial idea behind wrapping all memory functions
in libiscsi.
The results of booting are test system up to the login
prompt are quite impressive:
BEFORE:
libiscsi:5 memory is clean at iscsi_destroy_context() after 10712 mallocs, 18 realloc(s) and 10712 free(s)
AFTER:
libiscsi:5 memory is clean at iscsi_destroy_context() after 41 mallocs, 18 realloc(s), 41 free(s) and 10584 reused small allocations
Signed-off-by: Peter Lieven <pl@kamp.de>
