Re: [Xen-devel] [PATCH v4 07/18] xen/pvcalls: implement socket command
On Thu, Jun 22, 2017 at 11:29:44AM -0700, Stefano Stabellini wrote: > On Thu, 22 Jun 2017, Roger Pau Monné wrote: > > On Wed, Jun 21, 2017 at 01:16:56PM -0700, Stefano Stabellini wrote: > > > On Tue, 20 Jun 2017, Roger Pau Monné wrote: > > > > On Thu, Jun 15, 2017 at 12:09:36PM -0700, Stefano Stabellini wrote: > > > > > Just reply with success to the other end for now. Delay the allocation > > > > > of the actual socket to bind and/or connect. > > > > > > > > > > Signed-off-by: Stefano Stabellini> > > > > CC: boris.ostrov...@oracle.com > > > > > CC: jgr...@suse.com > > > > > --- > > > > > drivers/xen/pvcalls-back.c | 27 +++ > > > > > 1 file changed, 27 insertions(+) > > > > > > > > > > diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c > > > > > index 437c2ad..953458b 100644 > > > > > --- a/drivers/xen/pvcalls-back.c > > > > > +++ b/drivers/xen/pvcalls-back.c > > > > > @@ -12,12 +12,17 @@ > > > > > * GNU General Public License for more details. > > > > > */ > > > > > > > > > > +#include > > > > > #include > > > > > #include > > > > > #include > > > > > #include > > > > > #include > > > > > #include > > > > > +#include > > > > > +#include > > > > > +#include > > > > > +#include > > > > > > > > > > #include > > > > > #include > > > > > @@ -54,6 +59,28 @@ struct pvcalls_fedata { > > > > > static int pvcalls_back_socket(struct xenbus_device *dev, > > > > > struct xen_pvcalls_request *req) > > > > > { > > > > > + struct pvcalls_fedata *fedata; > > > > > + int ret; > > > > > + struct xen_pvcalls_response *rsp; > > > > > + > > > > > + fedata = dev_get_drvdata(>dev); > > > > > + > > > > > + if (req->u.socket.domain != AF_INET || > > > > > + req->u.socket.type != SOCK_STREAM || > > > > > + (req->u.socket.protocol != IPPROTO_IP && > > > > > + req->u.socket.protocol != AF_INET)) > > > > > + ret = -EAFNOSUPPORT; > > > > > > > > Sorry for jumping into this out of the blue, but shouldn't all the > > > > constants used above be part of the protocol? AF_INET/SOCK_STREAM/... > > > > are all part of POSIX, but their specific value is not defined in the > > > > standard, hence we should have XEN_AF_INET/XEN_SOCK_STREAM/... Or am I > > > > just missing something? > > > > > > The values of these constants for the pvcalls protocol are defined by > > > docs/misc/pvcalls.markdown under "Socket families and address format". > > > > > > They happen to be the same as the ones defined by Linux as AF_INET, > > > SOCK_STREAM, etc, so in Linux I am just using those, but that is just an > > > implementation detail internal to the Linux kernel driver. What is > > > important from the protocol ABI perspective are the values defined by > > > docs/misc/pvcalls.markdown. > > > > Oh I see. I still think this should be part of the public pvcalls.h > > header, and that the error codes should be the ones defined in > > public/errno.h (or else also added to the pvcalls header). > > This was done differently in the past, but now that we have a formal > process, a person in charge of new PV drivers reviews, and design > documents with clearly spelled out ABIs, I consider the design docs > under docs/misc as the official specification. We don't need headers > anymore, they are redundant. In fact, we cannot have two specifications, > and the design docs are certainly the official ones (we don't want the > specs to be written as header files in C). To me, the headers under > xen/include/public/io/ are optional helpers. It doesn't matter what's in > there, or if frontends and backends use them or not. > > There is really an argument for removing those headers, because they > might get out of sync with the spec by mistake, and in those cases, then > we really end up with two specifications for the same protocol. I would > be in favor of `git rm'ing all files under xen/include/public/io/ for > which we have a complete design doc under docs/misc. Thanks for the clarification. I agree that it would be good to remove those headers, it's confusing and it's likely that they will get out of sync. Roger. ___ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH v4 07/18] xen/pvcalls: implement socket command
On Thu, 22 Jun 2017, Andrew Cooper wrote: > On 22/06/17 19:29, Stefano Stabellini wrote: > > On Thu, 22 Jun 2017, Roger Pau Monné wrote: > >> On Wed, Jun 21, 2017 at 01:16:56PM -0700, Stefano Stabellini wrote: > >>> On Tue, 20 Jun 2017, Roger Pau Monné wrote: > On Thu, Jun 15, 2017 at 12:09:36PM -0700, Stefano Stabellini wrote: > > Just reply with success to the other end for now. Delay the allocation > > of the actual socket to bind and/or connect. > > > > Signed-off-by: Stefano Stabellini> > CC: boris.ostrov...@oracle.com > > CC: jgr...@suse.com > > --- > > drivers/xen/pvcalls-back.c | 27 +++ > > 1 file changed, 27 insertions(+) > > > > diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c > > index 437c2ad..953458b 100644 > > --- a/drivers/xen/pvcalls-back.c > > +++ b/drivers/xen/pvcalls-back.c > > @@ -12,12 +12,17 @@ > > * GNU General Public License for more details. > > */ > > > > +#include > > #include > > #include > > #include > > #include > > #include > > #include > > +#include > > +#include > > +#include > > +#include > > > > #include > > #include > > @@ -54,6 +59,28 @@ struct pvcalls_fedata { > > static int pvcalls_back_socket(struct xenbus_device *dev, > > struct xen_pvcalls_request *req) > > { > > + struct pvcalls_fedata *fedata; > > + int ret; > > + struct xen_pvcalls_response *rsp; > > + > > + fedata = dev_get_drvdata(>dev); > > + > > + if (req->u.socket.domain != AF_INET || > > + req->u.socket.type != SOCK_STREAM || > > + (req->u.socket.protocol != IPPROTO_IP && > > +req->u.socket.protocol != AF_INET)) > > + ret = -EAFNOSUPPORT; > Sorry for jumping into this out of the blue, but shouldn't all the > constants used above be part of the protocol? AF_INET/SOCK_STREAM/... > are all part of POSIX, but their specific value is not defined in the > standard, hence we should have XEN_AF_INET/XEN_SOCK_STREAM/... Or am I > just missing something? > >>> The values of these constants for the pvcalls protocol are defined by > >>> docs/misc/pvcalls.markdown under "Socket families and address format". > >>> > >>> They happen to be the same as the ones defined by Linux as AF_INET, > >>> SOCK_STREAM, etc, so in Linux I am just using those, but that is just an > >>> implementation detail internal to the Linux kernel driver. What is > >>> important from the protocol ABI perspective are the values defined by > >>> docs/misc/pvcalls.markdown. > >> Oh I see. I still think this should be part of the public pvcalls.h > >> header, and that the error codes should be the ones defined in > >> public/errno.h (or else also added to the pvcalls header). > > This was done differently in the past, but now that we have a formal > > process, a person in charge of new PV drivers reviews, and design > > documents with clearly spelled out ABIs, I consider the design docs > > under docs/misc as the official specification. We don't need headers > > anymore, they are redundant. In fact, we cannot have two specifications, > > and the design docs are certainly the official ones (we don't want the > > specs to be written as header files in C). To me, the headers under > > xen/include/public/io/ are optional helpers. It doesn't matter what's in > > there, or if frontends and backends use them or not. > > > > There is really an argument for removing those headers, because they > > might get out of sync with the spec by mistake, and in those cases, then > > we really end up with two specifications for the same protocol. I would > > be in favor of `git rm'ing all files under xen/include/public/io/ for > > which we have a complete design doc under docs/misc. > > +1. > > Specifications should not be written in C. The mess that is the net and > block protocol ABIs are perfect examples of why. > > Its fine (and indeed recommended) to provide a header file which > describes the specified protocol, but the authoritative spec should be > in text from. > > I would really prefer if more people started using ../docs/specs/. The > migration v2 documents are currently lonely there... I didn't realize we had a docs/specs. Feel free to move pvcalls and 9pfs under there.___ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH v4 07/18] xen/pvcalls: implement socket command
On 22/06/17 19:29, Stefano Stabellini wrote: > On Thu, 22 Jun 2017, Roger Pau Monné wrote: >> On Wed, Jun 21, 2017 at 01:16:56PM -0700, Stefano Stabellini wrote: >>> On Tue, 20 Jun 2017, Roger Pau Monné wrote: On Thu, Jun 15, 2017 at 12:09:36PM -0700, Stefano Stabellini wrote: > Just reply with success to the other end for now. Delay the allocation > of the actual socket to bind and/or connect. > > Signed-off-by: Stefano Stabellini> CC: boris.ostrov...@oracle.com > CC: jgr...@suse.com > --- > drivers/xen/pvcalls-back.c | 27 +++ > 1 file changed, 27 insertions(+) > > diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c > index 437c2ad..953458b 100644 > --- a/drivers/xen/pvcalls-back.c > +++ b/drivers/xen/pvcalls-back.c > @@ -12,12 +12,17 @@ > * GNU General Public License for more details. > */ > > +#include > #include > #include > #include > #include > #include > #include > +#include > +#include > +#include > +#include > > #include > #include > @@ -54,6 +59,28 @@ struct pvcalls_fedata { > static int pvcalls_back_socket(struct xenbus_device *dev, > struct xen_pvcalls_request *req) > { > + struct pvcalls_fedata *fedata; > + int ret; > + struct xen_pvcalls_response *rsp; > + > + fedata = dev_get_drvdata(>dev); > + > + if (req->u.socket.domain != AF_INET || > + req->u.socket.type != SOCK_STREAM || > + (req->u.socket.protocol != IPPROTO_IP && > + req->u.socket.protocol != AF_INET)) > + ret = -EAFNOSUPPORT; Sorry for jumping into this out of the blue, but shouldn't all the constants used above be part of the protocol? AF_INET/SOCK_STREAM/... are all part of POSIX, but their specific value is not defined in the standard, hence we should have XEN_AF_INET/XEN_SOCK_STREAM/... Or am I just missing something? >>> The values of these constants for the pvcalls protocol are defined by >>> docs/misc/pvcalls.markdown under "Socket families and address format". >>> >>> They happen to be the same as the ones defined by Linux as AF_INET, >>> SOCK_STREAM, etc, so in Linux I am just using those, but that is just an >>> implementation detail internal to the Linux kernel driver. What is >>> important from the protocol ABI perspective are the values defined by >>> docs/misc/pvcalls.markdown. >> Oh I see. I still think this should be part of the public pvcalls.h >> header, and that the error codes should be the ones defined in >> public/errno.h (or else also added to the pvcalls header). > This was done differently in the past, but now that we have a formal > process, a person in charge of new PV drivers reviews, and design > documents with clearly spelled out ABIs, I consider the design docs > under docs/misc as the official specification. We don't need headers > anymore, they are redundant. In fact, we cannot have two specifications, > and the design docs are certainly the official ones (we don't want the > specs to be written as header files in C). To me, the headers under > xen/include/public/io/ are optional helpers. It doesn't matter what's in > there, or if frontends and backends use them or not. > > There is really an argument for removing those headers, because they > might get out of sync with the spec by mistake, and in those cases, then > we really end up with two specifications for the same protocol. I would > be in favor of `git rm'ing all files under xen/include/public/io/ for > which we have a complete design doc under docs/misc. +1. Specifications should not be written in C. The mess that is the net and block protocol ABIs are perfect examples of why. Its fine (and indeed recommended) to provide a header file which describes the specified protocol, but the authoritative spec should be in text from. I would really prefer if more people started using ../docs/specs/. The migration v2 documents are currently lonely there... ~Andrew ___ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH v4 07/18] xen/pvcalls: implement socket command
On Thu, 22 Jun 2017, Roger Pau Monné wrote: > On Wed, Jun 21, 2017 at 01:16:56PM -0700, Stefano Stabellini wrote: > > On Tue, 20 Jun 2017, Roger Pau Monné wrote: > > > On Thu, Jun 15, 2017 at 12:09:36PM -0700, Stefano Stabellini wrote: > > > > Just reply with success to the other end for now. Delay the allocation > > > > of the actual socket to bind and/or connect. > > > > > > > > Signed-off-by: Stefano Stabellini> > > > CC: boris.ostrov...@oracle.com > > > > CC: jgr...@suse.com > > > > --- > > > > drivers/xen/pvcalls-back.c | 27 +++ > > > > 1 file changed, 27 insertions(+) > > > > > > > > diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c > > > > index 437c2ad..953458b 100644 > > > > --- a/drivers/xen/pvcalls-back.c > > > > +++ b/drivers/xen/pvcalls-back.c > > > > @@ -12,12 +12,17 @@ > > > > * GNU General Public License for more details. > > > > */ > > > > > > > > +#include > > > > #include > > > > #include > > > > #include > > > > #include > > > > #include > > > > #include > > > > +#include > > > > +#include > > > > +#include > > > > +#include > > > > > > > > #include > > > > #include > > > > @@ -54,6 +59,28 @@ struct pvcalls_fedata { > > > > static int pvcalls_back_socket(struct xenbus_device *dev, > > > > struct xen_pvcalls_request *req) > > > > { > > > > + struct pvcalls_fedata *fedata; > > > > + int ret; > > > > + struct xen_pvcalls_response *rsp; > > > > + > > > > + fedata = dev_get_drvdata(>dev); > > > > + > > > > + if (req->u.socket.domain != AF_INET || > > > > + req->u.socket.type != SOCK_STREAM || > > > > + (req->u.socket.protocol != IPPROTO_IP && > > > > +req->u.socket.protocol != AF_INET)) > > > > + ret = -EAFNOSUPPORT; > > > > > > Sorry for jumping into this out of the blue, but shouldn't all the > > > constants used above be part of the protocol? AF_INET/SOCK_STREAM/... > > > are all part of POSIX, but their specific value is not defined in the > > > standard, hence we should have XEN_AF_INET/XEN_SOCK_STREAM/... Or am I > > > just missing something? > > > > The values of these constants for the pvcalls protocol are defined by > > docs/misc/pvcalls.markdown under "Socket families and address format". > > > > They happen to be the same as the ones defined by Linux as AF_INET, > > SOCK_STREAM, etc, so in Linux I am just using those, but that is just an > > implementation detail internal to the Linux kernel driver. What is > > important from the protocol ABI perspective are the values defined by > > docs/misc/pvcalls.markdown. > > Oh I see. I still think this should be part of the public pvcalls.h > header, and that the error codes should be the ones defined in > public/errno.h (or else also added to the pvcalls header). This was done differently in the past, but now that we have a formal process, a person in charge of new PV drivers reviews, and design documents with clearly spelled out ABIs, I consider the design docs under docs/misc as the official specification. We don't need headers anymore, they are redundant. In fact, we cannot have two specifications, and the design docs are certainly the official ones (we don't want the specs to be written as header files in C). To me, the headers under xen/include/public/io/ are optional helpers. It doesn't matter what's in there, or if frontends and backends use them or not. There is really an argument for removing those headers, because they might get out of sync with the spec by mistake, and in those cases, then we really end up with two specifications for the same protocol. I would be in favor of `git rm'ing all files under xen/include/public/io/ for which we have a complete design doc under docs/misc.___ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH v4 07/18] xen/pvcalls: implement socket command
On Wed, Jun 21, 2017 at 01:16:56PM -0700, Stefano Stabellini wrote: > On Tue, 20 Jun 2017, Roger Pau Monné wrote: > > On Thu, Jun 15, 2017 at 12:09:36PM -0700, Stefano Stabellini wrote: > > > Just reply with success to the other end for now. Delay the allocation > > > of the actual socket to bind and/or connect. > > > > > > Signed-off-by: Stefano Stabellini> > > CC: boris.ostrov...@oracle.com > > > CC: jgr...@suse.com > > > --- > > > drivers/xen/pvcalls-back.c | 27 +++ > > > 1 file changed, 27 insertions(+) > > > > > > diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c > > > index 437c2ad..953458b 100644 > > > --- a/drivers/xen/pvcalls-back.c > > > +++ b/drivers/xen/pvcalls-back.c > > > @@ -12,12 +12,17 @@ > > > * GNU General Public License for more details. > > > */ > > > > > > +#include > > > #include > > > #include > > > #include > > > #include > > > #include > > > #include > > > +#include > > > +#include > > > +#include > > > +#include > > > > > > #include > > > #include > > > @@ -54,6 +59,28 @@ struct pvcalls_fedata { > > > static int pvcalls_back_socket(struct xenbus_device *dev, > > > struct xen_pvcalls_request *req) > > > { > > > + struct pvcalls_fedata *fedata; > > > + int ret; > > > + struct xen_pvcalls_response *rsp; > > > + > > > + fedata = dev_get_drvdata(>dev); > > > + > > > + if (req->u.socket.domain != AF_INET || > > > + req->u.socket.type != SOCK_STREAM || > > > + (req->u.socket.protocol != IPPROTO_IP && > > > + req->u.socket.protocol != AF_INET)) > > > + ret = -EAFNOSUPPORT; > > > > Sorry for jumping into this out of the blue, but shouldn't all the > > constants used above be part of the protocol? AF_INET/SOCK_STREAM/... > > are all part of POSIX, but their specific value is not defined in the > > standard, hence we should have XEN_AF_INET/XEN_SOCK_STREAM/... Or am I > > just missing something? > > The values of these constants for the pvcalls protocol are defined by > docs/misc/pvcalls.markdown under "Socket families and address format". > > They happen to be the same as the ones defined by Linux as AF_INET, > SOCK_STREAM, etc, so in Linux I am just using those, but that is just an > implementation detail internal to the Linux kernel driver. What is > important from the protocol ABI perspective are the values defined by > docs/misc/pvcalls.markdown. Oh I see. I still think this should be part of the public pvcalls.h header, and that the error codes should be the ones defined in public/errno.h (or else also added to the pvcalls header). Roger. ___ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH v4 07/18] xen/pvcalls: implement socket command
On Tue, 20 Jun 2017, Roger Pau Monné wrote: > On Thu, Jun 15, 2017 at 12:09:36PM -0700, Stefano Stabellini wrote: > > Just reply with success to the other end for now. Delay the allocation > > of the actual socket to bind and/or connect. > > > > Signed-off-by: Stefano Stabellini> > CC: boris.ostrov...@oracle.com > > CC: jgr...@suse.com > > --- > > drivers/xen/pvcalls-back.c | 27 +++ > > 1 file changed, 27 insertions(+) > > > > diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c > > index 437c2ad..953458b 100644 > > --- a/drivers/xen/pvcalls-back.c > > +++ b/drivers/xen/pvcalls-back.c > > @@ -12,12 +12,17 @@ > > * GNU General Public License for more details. > > */ > > > > +#include > > #include > > #include > > #include > > #include > > #include > > #include > > +#include > > +#include > > +#include > > +#include > > > > #include > > #include > > @@ -54,6 +59,28 @@ struct pvcalls_fedata { > > static int pvcalls_back_socket(struct xenbus_device *dev, > > struct xen_pvcalls_request *req) > > { > > + struct pvcalls_fedata *fedata; > > + int ret; > > + struct xen_pvcalls_response *rsp; > > + > > + fedata = dev_get_drvdata(>dev); > > + > > + if (req->u.socket.domain != AF_INET || > > + req->u.socket.type != SOCK_STREAM || > > + (req->u.socket.protocol != IPPROTO_IP && > > +req->u.socket.protocol != AF_INET)) > > + ret = -EAFNOSUPPORT; > > Sorry for jumping into this out of the blue, but shouldn't all the > constants used above be part of the protocol? AF_INET/SOCK_STREAM/... > are all part of POSIX, but their specific value is not defined in the > standard, hence we should have XEN_AF_INET/XEN_SOCK_STREAM/... Or am I > just missing something? The values of these constants for the pvcalls protocol are defined by docs/misc/pvcalls.markdown under "Socket families and address format". They happen to be the same as the ones defined by Linux as AF_INET, SOCK_STREAM, etc, so in Linux I am just using those, but that is just an implementation detail internal to the Linux kernel driver. What is important from the protocol ABI perspective are the values defined by docs/misc/pvcalls.markdown.___ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH v4 07/18] xen/pvcalls: implement socket command
On Thu, Jun 15, 2017 at 12:09:36PM -0700, Stefano Stabellini wrote: > Just reply with success to the other end for now. Delay the allocation > of the actual socket to bind and/or connect. > > Signed-off-by: Stefano Stabellini> CC: boris.ostrov...@oracle.com > CC: jgr...@suse.com > --- > drivers/xen/pvcalls-back.c | 27 +++ > 1 file changed, 27 insertions(+) > > diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c > index 437c2ad..953458b 100644 > --- a/drivers/xen/pvcalls-back.c > +++ b/drivers/xen/pvcalls-back.c > @@ -12,12 +12,17 @@ > * GNU General Public License for more details. > */ > > +#include > #include > #include > #include > #include > #include > #include > +#include > +#include > +#include > +#include > > #include > #include > @@ -54,6 +59,28 @@ struct pvcalls_fedata { > static int pvcalls_back_socket(struct xenbus_device *dev, > struct xen_pvcalls_request *req) > { > + struct pvcalls_fedata *fedata; > + int ret; > + struct xen_pvcalls_response *rsp; > + > + fedata = dev_get_drvdata(>dev); > + > + if (req->u.socket.domain != AF_INET || > + req->u.socket.type != SOCK_STREAM || > + (req->u.socket.protocol != IPPROTO_IP && > + req->u.socket.protocol != AF_INET)) > + ret = -EAFNOSUPPORT; Sorry for jumping into this out of the blue, but shouldn't all the constants used above be part of the protocol? AF_INET/SOCK_STREAM/... are all part of POSIX, but their specific value is not defined in the standard, hence we should have XEN_AF_INET/XEN_SOCK_STREAM/... Or am I just missing something? Roger. ___ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH v4 07/18] xen/pvcalls: implement socket command
On 06/15/2017 03:09 PM, Stefano Stabellini wrote: > Just reply with success to the other end for now. Delay the allocation > of the actual socket to bind and/or connect. > > Signed-off-by: Stefano Stabellini> CC: boris.ostrov...@oracle.com > CC: jgr...@suse.com Reviewed-by: Boris Ostrovsky ___ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
[Xen-devel] [PATCH v4 07/18] xen/pvcalls: implement socket command
Just reply with success to the other end for now. Delay the allocation of the actual socket to bind and/or connect. Signed-off-by: Stefano StabelliniCC: boris.ostrov...@oracle.com CC: jgr...@suse.com --- drivers/xen/pvcalls-back.c | 27 +++ 1 file changed, 27 insertions(+) diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c index 437c2ad..953458b 100644 --- a/drivers/xen/pvcalls-back.c +++ b/drivers/xen/pvcalls-back.c @@ -12,12 +12,17 @@ * GNU General Public License for more details. */ +#include #include #include #include #include #include #include +#include +#include +#include +#include #include #include @@ -54,6 +59,28 @@ struct pvcalls_fedata { static int pvcalls_back_socket(struct xenbus_device *dev, struct xen_pvcalls_request *req) { + struct pvcalls_fedata *fedata; + int ret; + struct xen_pvcalls_response *rsp; + + fedata = dev_get_drvdata(>dev); + + if (req->u.socket.domain != AF_INET || + req->u.socket.type != SOCK_STREAM || + (req->u.socket.protocol != IPPROTO_IP && +req->u.socket.protocol != AF_INET)) + ret = -EAFNOSUPPORT; + else + ret = 0; + + /* leave the actual socket allocation for later */ + + rsp = RING_GET_RESPONSE(>ring, fedata->ring.rsp_prod_pvt++); + rsp->req_id = req->req_id; + rsp->cmd = req->cmd; + rsp->u.socket.id = req->u.socket.id; + rsp->ret = ret; + return 0; } -- 1.9.1 ___ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel