* Re: [PATCH net-next] netvsc: Use the new in-place consumption APIs in the rx path
2016-06-10 1:34 [PATCH net-next] netvsc: Use the new in-place consumption APIs in the rx path K. Y. Srinivasan
@ 2016-06-10 0:12 ` Linus Torvalds
2016-06-10 0:16 ` KY Srinivasan
0 siblings, 1 reply; 4+ messages in thread
From: Linus Torvalds @ 2016-06-10 0:12 UTC (permalink / raw)
To: K. Y. Srinivasan
Cc: davem, netdev, lkml, devel, olaf, apw, jasowang, leann.ogasawara
Srinivasan,
these are all sent through linuxonhyperv.com, and fail DMARC because
they have a microsoft.com address but no valid DKIM.
Please fix your email setup. You need to go through the real
microsoft smtp servers if you use a microsoft.com address. Or you need
to get linuxonhyperv.com fixed as a smtp server with the proper MS
email signing.
Linus
On Thu, Jun 9, 2016 at 6:34 PM, K. Y. Srinivasan <kys@microsoft.com> wrote:
> Use the new APIs for eliminating a copy on the receive path. These new APIs also
> help in minimizing the number of memory barriers we end up issuing (in the
> ringbuffer code) since we can better control when we want to expose the ring
> state to the host.
>
> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
> Tested-by: Dexuan Cui <decui@microsoft.com>
> Tested-by: Simon Xiao <sixiao@microsoft.com>
> ---
> drivers/net/hyperv/netvsc.c | 88 +++++++++++++++++++++++++++++--------------
> 1 files changed, 59 insertions(+), 29 deletions(-)
>
> diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
> index 719cb35..8cd4c19 100644
> --- a/drivers/net/hyperv/netvsc.c
> +++ b/drivers/net/hyperv/netvsc.c
> @@ -1141,6 +1141,39 @@ static inline void netvsc_receive_inband(struct hv_device *hdev,
> }
> }
>
> +static void netvsc_process_raw_pkt(struct hv_device *device,
> + struct vmbus_channel *channel,
> + struct netvsc_device *net_device,
> + struct net_device *ndev,
> + u64 request_id,
> + struct vmpacket_descriptor *desc)
> +{
> + struct nvsp_message *nvmsg;
> +
> + nvmsg = (struct nvsp_message *)((unsigned long)
> + desc + (desc->offset8 << 3));
> +
> + switch (desc->type) {
> + case VM_PKT_COMP:
> + netvsc_send_completion(net_device, channel, device, desc);
> + break;
> +
> + case VM_PKT_DATA_USING_XFER_PAGES:
> + netvsc_receive(net_device, channel, device, desc);
> + break;
> +
> + case VM_PKT_DATA_INBAND:
> + netvsc_receive_inband(device, net_device, nvmsg);
> + break;
> +
> + default:
> + netdev_err(ndev, "unhandled packet type %d, tid %llx\n",
> + desc->type, request_id);
> + break;
> + }
> +}
> +
> +
> void netvsc_channel_cb(void *context)
> {
> int ret;
> @@ -1153,7 +1186,7 @@ void netvsc_channel_cb(void *context)
> unsigned char *buffer;
> int bufferlen = NETVSC_PACKET_SIZE;
> struct net_device *ndev;
> - struct nvsp_message *nvmsg;
> + bool need_to_commit = false;
>
> if (channel->primary_channel != NULL)
> device = channel->primary_channel->device_obj;
> @@ -1167,39 +1200,36 @@ void netvsc_channel_cb(void *context)
> buffer = get_per_channel_state(channel);
>
> do {
> + desc = get_next_pkt_raw(channel);
> + if (desc != NULL) {
> + netvsc_process_raw_pkt(device,
> + channel,
> + net_device,
> + ndev,
> + desc->trans_id,
> + desc);
> +
> + put_pkt_raw(channel, desc);
> + need_to_commit = true;
> + continue;
> + }
> + if (need_to_commit) {
> + need_to_commit = false;
> + commit_rd_index(channel);
> + }
> +
> ret = vmbus_recvpacket_raw(channel, buffer, bufferlen,
> &bytes_recvd, &request_id);
> if (ret == 0) {
> if (bytes_recvd > 0) {
> desc = (struct vmpacket_descriptor *)buffer;
> - nvmsg = (struct nvsp_message *)((unsigned long)
> - desc + (desc->offset8 << 3));
> - switch (desc->type) {
> - case VM_PKT_COMP:
> - netvsc_send_completion(net_device,
> - channel,
> - device, desc);
> - break;
> -
> - case VM_PKT_DATA_USING_XFER_PAGES:
> - netvsc_receive(net_device, channel,
> - device, desc);
> - break;
> -
> - case VM_PKT_DATA_INBAND:
> - netvsc_receive_inband(device,
> - net_device,
> - nvmsg);
> - break;
> -
> - default:
> - netdev_err(ndev,
> - "unhandled packet type %d, "
> - "tid %llx len %d\n",
> - desc->type, request_id,
> - bytes_recvd);
> - break;
> - }
> + netvsc_process_raw_pkt(device,
> + channel,
> + net_device,
> + ndev,
> + request_id,
> + desc);
> +
>
> } else {
> /*
> --
> 1.7.4.1
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* RE: [PATCH net-next] netvsc: Use the new in-place consumption APIs in the rx path
2016-06-10 0:12 ` Linus Torvalds
@ 2016-06-10 0:16 ` KY Srinivasan
2016-07-01 17:06 ` KY Srinivasan
0 siblings, 1 reply; 4+ messages in thread
From: KY Srinivasan @ 2016-06-10 0:16 UTC (permalink / raw)
To: Linus Torvalds
Cc: davem@davemloft.net, netdev@vger.kernel.org, lkml,
devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com,
jasowang@redhat.com, leann.ogasawara@canonical.com
> -----Original Message-----
> From: Linus Torvalds [mailto:torvalds@linux-foundation.org]
> Sent: Thursday, June 9, 2016 5:12 PM
> To: KY Srinivasan <kys@microsoft.com>
> Cc: davem@davemloft.net; netdev@vger.kernel.org; lkml <linux-
> kernel@vger.kernel.org>; devel@linuxdriverproject.org; olaf@aepfle.de;
> apw@canonical.com; jasowang@redhat.com;
> leann.ogasawara@canonical.com
> Subject: Re: [PATCH net-next] netvsc: Use the new in-place consumption APIs in
> the rx path
>
> Srinivasan,
>
> these are all sent through linuxonhyperv.com, and fail DMARC because
> they have a microsoft.com address but no valid DKIM.
>
> Please fix your email setup. You need to go through the real
> microsoft smtp servers if you use a microsoft.com address. Or you need
> to get linuxonhyperv.com fixed as a smtp server with the proper MS
> email signing.
>
> Linus
Thanks Linus, we will fix our email setup.
Regards,
K. Y
>
> On Thu, Jun 9, 2016 at 6:34 PM, K. Y. Srinivasan <kys@microsoft.com> wrote:
> > Use the new APIs for eliminating a copy on the receive path. These new APIs
> also
> > help in minimizing the number of memory barriers we end up issuing (in the
> > ringbuffer code) since we can better control when we want to expose the ring
> > state to the host.
> >
> > Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> > Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
> > Tested-by: Dexuan Cui <decui@microsoft.com>
> > Tested-by: Simon Xiao <sixiao@microsoft.com>
> > ---
> > drivers/net/hyperv/netvsc.c | 88 +++++++++++++++++++++++++++++---------
> -----
> > 1 files changed, 59 insertions(+), 29 deletions(-)
> >
> > diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
> > index 719cb35..8cd4c19 100644
> > --- a/drivers/net/hyperv/netvsc.c
> > +++ b/drivers/net/hyperv/netvsc.c
> > @@ -1141,6 +1141,39 @@ static inline void netvsc_receive_inband(struct
> hv_device *hdev,
> > }
> > }
> >
> > +static void netvsc_process_raw_pkt(struct hv_device *device,
> > + struct vmbus_channel *channel,
> > + struct netvsc_device *net_device,
> > + struct net_device *ndev,
> > + u64 request_id,
> > + struct vmpacket_descriptor *desc)
> > +{
> > + struct nvsp_message *nvmsg;
> > +
> > + nvmsg = (struct nvsp_message *)((unsigned long)
> > + desc + (desc->offset8 << 3));
> > +
> > + switch (desc->type) {
> > + case VM_PKT_COMP:
> > + netvsc_send_completion(net_device, channel, device, desc);
> > + break;
> > +
> > + case VM_PKT_DATA_USING_XFER_PAGES:
> > + netvsc_receive(net_device, channel, device, desc);
> > + break;
> > +
> > + case VM_PKT_DATA_INBAND:
> > + netvsc_receive_inband(device, net_device, nvmsg);
> > + break;
> > +
> > + default:
> > + netdev_err(ndev, "unhandled packet type %d, tid %llx\n",
> > + desc->type, request_id);
> > + break;
> > + }
> > +}
> > +
> > +
> > void netvsc_channel_cb(void *context)
> > {
> > int ret;
> > @@ -1153,7 +1186,7 @@ void netvsc_channel_cb(void *context)
> > unsigned char *buffer;
> > int bufferlen = NETVSC_PACKET_SIZE;
> > struct net_device *ndev;
> > - struct nvsp_message *nvmsg;
> > + bool need_to_commit = false;
> >
> > if (channel->primary_channel != NULL)
> > device = channel->primary_channel->device_obj;
> > @@ -1167,39 +1200,36 @@ void netvsc_channel_cb(void *context)
> > buffer = get_per_channel_state(channel);
> >
> > do {
> > + desc = get_next_pkt_raw(channel);
> > + if (desc != NULL) {
> > + netvsc_process_raw_pkt(device,
> > + channel,
> > + net_device,
> > + ndev,
> > + desc->trans_id,
> > + desc);
> > +
> > + put_pkt_raw(channel, desc);
> > + need_to_commit = true;
> > + continue;
> > + }
> > + if (need_to_commit) {
> > + need_to_commit = false;
> > + commit_rd_index(channel);
> > + }
> > +
> > ret = vmbus_recvpacket_raw(channel, buffer, bufferlen,
> > &bytes_recvd, &request_id);
> > if (ret == 0) {
> > if (bytes_recvd > 0) {
> > desc = (struct vmpacket_descriptor *)buffer;
> > - nvmsg = (struct nvsp_message *)((unsigned long)
> > - desc + (desc->offset8 << 3));
> > - switch (desc->type) {
> > - case VM_PKT_COMP:
> > - netvsc_send_completion(net_device,
> > - channel,
> > - device, desc);
> > - break;
> > -
> > - case VM_PKT_DATA_USING_XFER_PAGES:
> > - netvsc_receive(net_device, channel,
> > - device, desc);
> > - break;
> > -
> > - case VM_PKT_DATA_INBAND:
> > - netvsc_receive_inband(device,
> > - net_device,
> > - nvmsg);
> > - break;
> > -
> > - default:
> > - netdev_err(ndev,
> > - "unhandled packet type %d, "
> > - "tid %llx len %d\n",
> > - desc->type, request_id,
> > - bytes_recvd);
> > - break;
> > - }
> > + netvsc_process_raw_pkt(device,
> > + channel,
> > + net_device,
> > + ndev,
> > + request_id,
> > + desc);
> > +
> >
> > } else {
> > /*
> > --
> > 1.7.4.1
> >
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH net-next] netvsc: Use the new in-place consumption APIs in the rx path
@ 2016-06-10 1:34 K. Y. Srinivasan
2016-06-10 0:12 ` Linus Torvalds
0 siblings, 1 reply; 4+ messages in thread
From: K. Y. Srinivasan @ 2016-06-10 1:34 UTC (permalink / raw)
To: davem, netdev, linux-kernel, devel, olaf, apw, jasowang,
leann.ogasawara
Cc: K. Y. Srinivasan
Use the new APIs for eliminating a copy on the receive path. These new APIs also
help in minimizing the number of memory barriers we end up issuing (in the
ringbuffer code) since we can better control when we want to expose the ring
state to the host.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Tested-by: Dexuan Cui <decui@microsoft.com>
Tested-by: Simon Xiao <sixiao@microsoft.com>
---
drivers/net/hyperv/netvsc.c | 88 +++++++++++++++++++++++++++++--------------
1 files changed, 59 insertions(+), 29 deletions(-)
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
index 719cb35..8cd4c19 100644
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -1141,6 +1141,39 @@ static inline void netvsc_receive_inband(struct hv_device *hdev,
}
}
+static void netvsc_process_raw_pkt(struct hv_device *device,
+ struct vmbus_channel *channel,
+ struct netvsc_device *net_device,
+ struct net_device *ndev,
+ u64 request_id,
+ struct vmpacket_descriptor *desc)
+{
+ struct nvsp_message *nvmsg;
+
+ nvmsg = (struct nvsp_message *)((unsigned long)
+ desc + (desc->offset8 << 3));
+
+ switch (desc->type) {
+ case VM_PKT_COMP:
+ netvsc_send_completion(net_device, channel, device, desc);
+ break;
+
+ case VM_PKT_DATA_USING_XFER_PAGES:
+ netvsc_receive(net_device, channel, device, desc);
+ break;
+
+ case VM_PKT_DATA_INBAND:
+ netvsc_receive_inband(device, net_device, nvmsg);
+ break;
+
+ default:
+ netdev_err(ndev, "unhandled packet type %d, tid %llx\n",
+ desc->type, request_id);
+ break;
+ }
+}
+
+
void netvsc_channel_cb(void *context)
{
int ret;
@@ -1153,7 +1186,7 @@ void netvsc_channel_cb(void *context)
unsigned char *buffer;
int bufferlen = NETVSC_PACKET_SIZE;
struct net_device *ndev;
- struct nvsp_message *nvmsg;
+ bool need_to_commit = false;
if (channel->primary_channel != NULL)
device = channel->primary_channel->device_obj;
@@ -1167,39 +1200,36 @@ void netvsc_channel_cb(void *context)
buffer = get_per_channel_state(channel);
do {
+ desc = get_next_pkt_raw(channel);
+ if (desc != NULL) {
+ netvsc_process_raw_pkt(device,
+ channel,
+ net_device,
+ ndev,
+ desc->trans_id,
+ desc);
+
+ put_pkt_raw(channel, desc);
+ need_to_commit = true;
+ continue;
+ }
+ if (need_to_commit) {
+ need_to_commit = false;
+ commit_rd_index(channel);
+ }
+
ret = vmbus_recvpacket_raw(channel, buffer, bufferlen,
&bytes_recvd, &request_id);
if (ret == 0) {
if (bytes_recvd > 0) {
desc = (struct vmpacket_descriptor *)buffer;
- nvmsg = (struct nvsp_message *)((unsigned long)
- desc + (desc->offset8 << 3));
- switch (desc->type) {
- case VM_PKT_COMP:
- netvsc_send_completion(net_device,
- channel,
- device, desc);
- break;
-
- case VM_PKT_DATA_USING_XFER_PAGES:
- netvsc_receive(net_device, channel,
- device, desc);
- break;
-
- case VM_PKT_DATA_INBAND:
- netvsc_receive_inband(device,
- net_device,
- nvmsg);
- break;
-
- default:
- netdev_err(ndev,
- "unhandled packet type %d, "
- "tid %llx len %d\n",
- desc->type, request_id,
- bytes_recvd);
- break;
- }
+ netvsc_process_raw_pkt(device,
+ channel,
+ net_device,
+ ndev,
+ request_id,
+ desc);
+
} else {
/*
--
1.7.4.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* RE: [PATCH net-next] netvsc: Use the new in-place consumption APIs in the rx path
2016-06-10 0:16 ` KY Srinivasan
@ 2016-07-01 17:06 ` KY Srinivasan
0 siblings, 0 replies; 4+ messages in thread
From: KY Srinivasan @ 2016-07-01 17:06 UTC (permalink / raw)
To: Linus Torvalds
Cc: davem@davemloft.net, netdev@vger.kernel.org, lkml,
devel@linuxdriverproject.org, olaf@aepfle.de, apw@canonical.com,
jasowang@redhat.com, leann.ogasawara@canonical.com
> -----Original Message-----
> From: KY Srinivasan
> Sent: Thursday, June 9, 2016 5:16 PM
> To: 'Linus Torvalds' <torvalds@linux-foundation.org>
> Cc: davem@davemloft.net; netdev@vger.kernel.org; lkml <linux-
> kernel@vger.kernel.org>; devel@linuxdriverproject.org; olaf@aepfle.de;
> apw@canonical.com; jasowang@redhat.com;
> leann.ogasawara@canonical.com
> Subject: RE: [PATCH net-next] netvsc: Use the new in-place consumption APIs in
> the rx path
>
>
>
> > -----Original Message-----
> > From: Linus Torvalds [mailto:torvalds@linux-foundation.org]
> > Sent: Thursday, June 9, 2016 5:12 PM
> > To: KY Srinivasan <kys@microsoft.com>
> > Cc: davem@davemloft.net; netdev@vger.kernel.org; lkml <linux-
> > kernel@vger.kernel.org>; devel@linuxdriverproject.org; olaf@aepfle.de;
> > apw@canonical.com; jasowang@redhat.com;
> > leann.ogasawara@canonical.com
> > Subject: Re: [PATCH net-next] netvsc: Use the new in-place consumption APIs
> in
> > the rx path
> >
> > Srinivasan,
> >
> > these are all sent through linuxonhyperv.com, and fail DMARC because
> > they have a microsoft.com address but no valid DKIM.
> >
> > Please fix your email setup. You need to go through the real
> > microsoft smtp servers if you use a microsoft.com address. Or you need
> > to get linuxonhyperv.com fixed as a smtp server with the proper MS
> > email signing.
> >
> > Linus
>
> Thanks Linus, we will fix our email setup.
We have now addressed this issue (kind of). We will continue to send our patches from
linuxonhyperv.com; however the "from" address will be example@exchange.microsoft.com.
We are working on the longer term solution that won't need this weird "from" address.
David, based on this comment from Linus, you have deferred this patch -
as far as I know there were no other comments for me to address.
Should I resend the patch.
Regards,
K. Y
>
> Regards,
>
> K. Y
> >
> > On Thu, Jun 9, 2016 at 6:34 PM, K. Y. Srinivasan <kys@microsoft.com> wrote:
> > > Use the new APIs for eliminating a copy on the receive path. These new
> APIs
> > also
> > > help in minimizing the number of memory barriers we end up issuing (in
> the
> > > ringbuffer code) since we can better control when we want to expose the
> ring
> > > state to the host.
> > >
> > > Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
> > > Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
> > > Tested-by: Dexuan Cui <decui@microsoft.com>
> > > Tested-by: Simon Xiao <sixiao@microsoft.com>
> > > ---
> > > drivers/net/hyperv/netvsc.c | 88 +++++++++++++++++++++++++++++-------
> --
> > -----
> > > 1 files changed, 59 insertions(+), 29 deletions(-)
> > >
> > > diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
> > > index 719cb35..8cd4c19 100644
> > > --- a/drivers/net/hyperv/netvsc.c
> > > +++ b/drivers/net/hyperv/netvsc.c
> > > @@ -1141,6 +1141,39 @@ static inline void netvsc_receive_inband(struct
> > hv_device *hdev,
> > > }
> > > }
> > >
> > > +static void netvsc_process_raw_pkt(struct hv_device *device,
> > > + struct vmbus_channel *channel,
> > > + struct netvsc_device *net_device,
> > > + struct net_device *ndev,
> > > + u64 request_id,
> > > + struct vmpacket_descriptor *desc)
> > > +{
> > > + struct nvsp_message *nvmsg;
> > > +
> > > + nvmsg = (struct nvsp_message *)((unsigned long)
> > > + desc + (desc->offset8 << 3));
> > > +
> > > + switch (desc->type) {
> > > + case VM_PKT_COMP:
> > > + netvsc_send_completion(net_device, channel, device, desc);
> > > + break;
> > > +
> > > + case VM_PKT_DATA_USING_XFER_PAGES:
> > > + netvsc_receive(net_device, channel, device, desc);
> > > + break;
> > > +
> > > + case VM_PKT_DATA_INBAND:
> > > + netvsc_receive_inband(device, net_device, nvmsg);
> > > + break;
> > > +
> > > + default:
> > > + netdev_err(ndev, "unhandled packet type %d, tid %llx\n",
> > > + desc->type, request_id);
> > > + break;
> > > + }
> > > +}
> > > +
> > > +
> > > void netvsc_channel_cb(void *context)
> > > {
> > > int ret;
> > > @@ -1153,7 +1186,7 @@ void netvsc_channel_cb(void *context)
> > > unsigned char *buffer;
> > > int bufferlen = NETVSC_PACKET_SIZE;
> > > struct net_device *ndev;
> > > - struct nvsp_message *nvmsg;
> > > + bool need_to_commit = false;
> > >
> > > if (channel->primary_channel != NULL)
> > > device = channel->primary_channel->device_obj;
> > > @@ -1167,39 +1200,36 @@ void netvsc_channel_cb(void *context)
> > > buffer = get_per_channel_state(channel);
> > >
> > > do {
> > > + desc = get_next_pkt_raw(channel);
> > > + if (desc != NULL) {
> > > + netvsc_process_raw_pkt(device,
> > > + channel,
> > > + net_device,
> > > + ndev,
> > > + desc->trans_id,
> > > + desc);
> > > +
> > > + put_pkt_raw(channel, desc);
> > > + need_to_commit = true;
> > > + continue;
> > > + }
> > > + if (need_to_commit) {
> > > + need_to_commit = false;
> > > + commit_rd_index(channel);
> > > + }
> > > +
> > > ret = vmbus_recvpacket_raw(channel, buffer, bufferlen,
> > > &bytes_recvd, &request_id);
> > > if (ret == 0) {
> > > if (bytes_recvd > 0) {
> > > desc = (struct vmpacket_descriptor *)buffer;
> > > - nvmsg = (struct nvsp_message *)((unsigned long)
> > > - desc + (desc->offset8 << 3));
> > > - switch (desc->type) {
> > > - case VM_PKT_COMP:
> > > - netvsc_send_completion(net_device,
> > > - channel,
> > > - device, desc);
> > > - break;
> > > -
> > > - case VM_PKT_DATA_USING_XFER_PAGES:
> > > - netvsc_receive(net_device, channel,
> > > - device, desc);
> > > - break;
> > > -
> > > - case VM_PKT_DATA_INBAND:
> > > - netvsc_receive_inband(device,
> > > - net_device,
> > > - nvmsg);
> > > - break;
> > > -
> > > - default:
> > > - netdev_err(ndev,
> > > - "unhandled packet type %d, "
> > > - "tid %llx len %d\n",
> > > - desc->type, request_id,
> > > - bytes_recvd);
> > > - break;
> > > - }
> > > + netvsc_process_raw_pkt(device,
> > > + channel,
> > > + net_device,
> > > + ndev,
> > > + request_id,
> > > + desc);
> > > +
> > >
> > > } else {
> > > /*
> > > --
> > > 1.7.4.1
> > >
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2016-07-01 19:40 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-06-10 1:34 [PATCH net-next] netvsc: Use the new in-place consumption APIs in the rx path K. Y. Srinivasan
2016-06-10 0:12 ` Linus Torvalds
2016-06-10 0:16 ` KY Srinivasan
2016-07-01 17:06 ` KY Srinivasan
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