| Message ID | 1493725969-19518-7-git-send-email-amarnath.valluri@intel.com |
|---|---|
| State | New |
| Headers | show |
Hi On Tue, May 2, 2017 at 3:53 PM Amarnath Valluri <amarnath.valluri@intel.com> wrote: > Provide base implementation of realloc_buffer(), so that backend > implementations > can resue. > > I doubt that base class facility helps at this point, and would suggest moving it to tpm-tis only. > Signed-off-by: Amarnath Valluri <amarnath.valluri@intel.com> > --- > backends/tpm.c | 9 ++++++++- > hw/tpm/tpm_passthrough.c | 12 ------------ > 2 files changed, 8 insertions(+), 13 deletions(-) > > diff --git a/backends/tpm.c b/backends/tpm.c > index 4a6358e..f048c1d 100644 > --- a/backends/tpm.c > +++ b/backends/tpm.c > @@ -88,8 +88,15 @@ bool tpm_backend_had_startup_error(TPMBackend *s) > size_t tpm_backend_realloc_buffer(TPMBackend *s, TPMSizedBuffer *sb) > { > TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); > + if (!k->ops->realloc_buffer) { > + size_t wanted_size = 4096; /* Linux tpm.c buffer size */ > > - assert(k->ops->realloc_buffer); > + if (sb->size != wanted_size) { > + sb->buffer = g_realloc(sb->buffer, wanted_size); > + sb->size = wanted_size; > + } > + return sb->size; > + } > > return k->ops->realloc_buffer(sb); > } > diff --git a/hw/tpm/tpm_passthrough.c b/hw/tpm/tpm_passthrough.c > index 2efced1..a7da0f8 100644 > --- a/hw/tpm/tpm_passthrough.c > +++ b/hw/tpm/tpm_passthrough.c > @@ -258,17 +258,6 @@ static bool > tpm_passthrough_get_startup_error(TPMBackend *tb) > return tpm_pt->had_startup_error; > } > > -static size_t tpm_passthrough_realloc_buffer(TPMSizedBuffer *sb) > -{ > - size_t wanted_size = 4096; /* Linux tpm.c buffer size */ > - > - if (sb->size != wanted_size) { > - sb->buffer = g_realloc(sb->buffer, wanted_size); > - sb->size = wanted_size; > - } > - return sb->size; > -} > - > static void tpm_passthrough_cancel_cmd(TPMBackend *tb) > { > TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb); > @@ -470,7 +459,6 @@ static const TPMDriverOps tpm_passthrough_driver = { > .opts = tpm_passthrough_cmdline_opts, > .desc = tpm_passthrough_create_desc, > .create = tpm_passthrough_create, > - .realloc_buffer = tpm_passthrough_realloc_buffer, > .reset = tpm_passthrough_reset, > .had_startup_error = tpm_passthrough_get_startup_error, > .cancel_cmd = tpm_passthrough_cancel_cmd, > -- > 2.7.4 > > -- Marc-André Lureau
On 05/02/2017 06:54 PM, Marc-André Lureau wrote: > Hi > > On Tue, May 2, 2017 at 3:53 PM Amarnath Valluri > <amarnath.valluri@intel.com <mailto:amarnath.valluri@intel.com>> wrote: > > Provide base implementation of realloc_buffer(), so that backend > implementations > can resue. > > > I doubt that base class facility helps at this point, and would > suggest moving it to tpm-tis only. The intention here is to provided the default implementation in base class, still backends can overwrite with their suitable reallocation size. - Amarnath
On Thu, May 4, 2017 at 1:23 PM Amarnath Valluri <amarnath.valluri@intel.com> wrote: > > > On 05/02/2017 06:54 PM, Marc-André Lureau wrote: > > Hi > > On Tue, May 2, 2017 at 3:53 PM Amarnath Valluri < > amarnath.valluri@intel.com> wrote: > >> Provide base implementation of realloc_buffer(), so that backend >> implementations >> can resue. >> >> > I doubt that base class facility helps at this point, and would suggest > moving it to tpm-tis only. > > The intention here is to provided the default implementation in base > class, still backends can overwrite with their suitable reallocation size. > > But no other backend uses it.
diff --git a/backends/tpm.c b/backends/tpm.c index 4a6358e..f048c1d 100644 --- a/backends/tpm.c +++ b/backends/tpm.c @@ -88,8 +88,15 @@ bool tpm_backend_had_startup_error(TPMBackend *s) size_t tpm_backend_realloc_buffer(TPMBackend *s, TPMSizedBuffer *sb) { TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + if (!k->ops->realloc_buffer) { + size_t wanted_size = 4096; /* Linux tpm.c buffer size */ - assert(k->ops->realloc_buffer); + if (sb->size != wanted_size) { + sb->buffer = g_realloc(sb->buffer, wanted_size); + sb->size = wanted_size; + } + return sb->size; + } return k->ops->realloc_buffer(sb); } diff --git a/hw/tpm/tpm_passthrough.c b/hw/tpm/tpm_passthrough.c index 2efced1..a7da0f8 100644 --- a/hw/tpm/tpm_passthrough.c +++ b/hw/tpm/tpm_passthrough.c @@ -258,17 +258,6 @@ static bool tpm_passthrough_get_startup_error(TPMBackend *tb) return tpm_pt->had_startup_error; } -static size_t tpm_passthrough_realloc_buffer(TPMSizedBuffer *sb) -{ - size_t wanted_size = 4096; /* Linux tpm.c buffer size */ - - if (sb->size != wanted_size) { - sb->buffer = g_realloc(sb->buffer, wanted_size); - sb->size = wanted_size; - } - return sb->size; -} - static void tpm_passthrough_cancel_cmd(TPMBackend *tb) { TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb); @@ -470,7 +459,6 @@ static const TPMDriverOps tpm_passthrough_driver = { .opts = tpm_passthrough_cmdline_opts, .desc = tpm_passthrough_create_desc, .create = tpm_passthrough_create, - .realloc_buffer = tpm_passthrough_realloc_buffer, .reset = tpm_passthrough_reset, .had_startup_error = tpm_passthrough_get_startup_error, .cancel_cmd = tpm_passthrough_cancel_cmd,
Provide base implementation of realloc_buffer(), so that backend implementations can resue. Signed-off-by: Amarnath Valluri <amarnath.valluri@intel.com> --- backends/tpm.c | 9 ++++++++- hw/tpm/tpm_passthrough.c | 12 ------------ 2 files changed, 8 insertions(+), 13 deletions(-)