.../Drivers/DwEmacSnpDxe/EmacDxeUtil.c | 22 ++++++++++++------- 1 file changed, 14 insertions(+), 8 deletions(-)
From: Yang Wang <wangyzhaoz@163.com>
If IrqStat is NULL, the interrupt status will not be
read from the device.When the interrupt status is read,
it will also be cleared.
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Ran Wang <wangran@bosc.ac.cn>
Signed-off-by: Yang Wang <wangyzhaoz@163.com>
---
.../Drivers/DwEmacSnpDxe/EmacDxeUtil.c | 22 ++++++++++++-------
1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c b/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c
index 3b982ce984..26d3ff6138 100755
--- a/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c
+++ b/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c
@@ -500,24 +500,30 @@ EmacGetDmaStatus (
UINT32 ErrorBit;
UINT32 Mask = 0;
+ if (IrqStat != NULL) {
+ *IrqStat = 0;
+ }
+
DmaStatus = MmioRead32 (MacBaseAddress +
DW_EMAC_DMAGRP_STATUS_OFST);
if (DmaStatus & DW_EMAC_DMAGRP_STATUS_NIS_SET_MSK) {
Mask |= DW_EMAC_DMAGRP_STATUS_NIS_SET_MSK;
// Rx interrupt
if (DmaStatus & DW_EMAC_DMAGRP_STATUS_RI_SET_MSK) {
- *IrqStat |= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;
- Mask |= DW_EMAC_DMAGRP_STATUS_RI_SET_MSK;
- } else {
- *IrqStat &= ~EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;
+ if (IrqStat != NULL) {
+ *IrqStat |= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;
+ Mask |= DW_EMAC_DMAGRP_STATUS_RI_SET_MSK;
+ }
}
+
// Tx interrupt
if (DmaStatus & DW_EMAC_DMAGRP_STATUS_TI_SET_MSK) {
- *IrqStat |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;
- Mask |= DW_EMAC_DMAGRP_STATUS_TI_SET_MSK;
- } else {
- *IrqStat &= ~EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;
+ if (IrqStat != NULL) {
+ *IrqStat |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;
+ Mask |= DW_EMAC_DMAGRP_STATUS_TI_SET_MSK;
+ }
}
+
// Tx Buffer
if (DmaStatus & DW_EMAC_DMAGRP_STATUS_TU_SET_MSK){
Mask |= DW_EMAC_DMAGRP_STATUS_TU_SET_MSK;
--
2.25.1
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On Fri, Jul 28, 2023 at 5:00 AM wangy <wangyzhaoz@163.com> wrote: > > From: Yang Wang <wangyzhaoz@163.com> > > If IrqStat is NULL, the interrupt status will not be > read from the device.When the interrupt status is read, > it will also be cleared. Let's improve the commit message a bit, something like: The EFI spec (see UEFI 2.10, 24.1.12) requires EFI_SIMPLE_NETWORK.GetStatus() to handle NULL InterruptStatus pointers by not reading nor clearing the interrupt status from the device. However, EmacGetDmaStatus (part of the DwEmacSnpDxe GetStatus() implementation) did not correctly handle NULL IrqStat, despite already being tagged as an OPTIONAL argument. This made calling GetStatus() with a NULL pointer (for example, the call in MnpRecycleTxBuf) either corrupt memory or straight-up crash. Make it EFI spec compliant, by adding proper NULL pointer checks around RI_SET_MSK and TI_SET_MSK retrieval/clearing. -- In any case, take my: Acked-by: Pedro Falcato <pedro.falcato@gmail.com> > Cc: Leif Lindholm <quic_llindhol@quicinc.com> > Cc: Ard Biesheuvel <ardb@kernel.org> > Cc: Ran Wang <wangran@bosc.ac.cn> > > Signed-off-by: Yang Wang <wangyzhaoz@163.com> > --- > .../Drivers/DwEmacSnpDxe/EmacDxeUtil.c | 22 ++++++++++++------- > 1 file changed, 14 insertions(+), 8 deletions(-) > > diff --git a/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c b/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c > index 3b982ce984..26d3ff6138 100755 > --- a/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c > +++ b/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c > @@ -500,24 +500,30 @@ EmacGetDmaStatus ( > UINT32 ErrorBit; > UINT32 Mask = 0; > > + if (IrqStat != NULL) { > + *IrqStat = 0; > + } > + > DmaStatus = MmioRead32 (MacBaseAddress + > DW_EMAC_DMAGRP_STATUS_OFST); > if (DmaStatus & DW_EMAC_DMAGRP_STATUS_NIS_SET_MSK) { > Mask |= DW_EMAC_DMAGRP_STATUS_NIS_SET_MSK; > // Rx interrupt > if (DmaStatus & DW_EMAC_DMAGRP_STATUS_RI_SET_MSK) { > - *IrqStat |= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT; > - Mask |= DW_EMAC_DMAGRP_STATUS_RI_SET_MSK; > - } else { > - *IrqStat &= ~EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT; > + if (IrqStat != NULL) { > + *IrqStat |= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT; > + Mask |= DW_EMAC_DMAGRP_STATUS_RI_SET_MSK; > + } > } > + > // Tx interrupt > if (DmaStatus & DW_EMAC_DMAGRP_STATUS_TI_SET_MSK) { > - *IrqStat |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT; > - Mask |= DW_EMAC_DMAGRP_STATUS_TI_SET_MSK; > - } else { > - *IrqStat &= ~EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT; > + if (IrqStat != NULL) { > + *IrqStat |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT; > + Mask |= DW_EMAC_DMAGRP_STATUS_TI_SET_MSK; > + } > } > + > // Tx Buffer > if (DmaStatus & DW_EMAC_DMAGRP_STATUS_TU_SET_MSK){ > Mask |= DW_EMAC_DMAGRP_STATUS_TU_SET_MSK; > -- > 2.25.1 > > > > ------------ > Groups.io Links: You receive all messages sent to this group. > View/Reply Online (#107311): https://edk2.groups.io/g/devel/message/107311 > Mute This Topic: https://groups.io/mt/100404855/5946980 > Group Owner: devel+owner@edk2.groups.io > Unsubscribe: https://edk2.groups.io/g/devel/unsub [pedro.falcato@gmail.com] > ------------ > > -- Pedro -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#107376): https://edk2.groups.io/g/devel/message/107376 Mute This Topic: https://groups.io/mt/100404855/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=-=-=-=-=-=-=-=-=-=-=-
Hi Pedro Falcato, At 2023-07-29 03:40:15, "Pedro Falcato" <pedro.falcato@gmail.com> wrote: >On Fri, Jul 28, 2023 at 5:00 AM wangy <wangyzhaoz@163.com> wrote: >> >> From: Yang Wang <wangyzhaoz@163.com> >> >> If IrqStat is NULL, the interrupt status will not be >> read from the device.When the interrupt status is read, >> it will also be cleared. > >Let's improve the commit message a bit, something like: > >The EFI spec (see UEFI 2.10, 24.1.12) requires >EFI_SIMPLE_NETWORK.GetStatus() to handle NULL InterruptStatus pointers >by not reading nor clearing the interrupt status from the device. > >However, EmacGetDmaStatus (part of the DwEmacSnpDxe GetStatus() >implementation) did not correctly handle NULL IrqStat, despite already >being tagged as an OPTIONAL argument. This made calling GetStatus() >with a NULL pointer (for example, the call in MnpRecycleTxBuf) either >corrupt memory or straight-up crash. > >Make it EFI spec compliant, by adding proper NULL pointer checks >around RI_SET_MSK and TI_SET_MSK retrieval/clearing. > >-- > >In any case, take my: > >Acked-by: Pedro Falcato <pedro.falcato@gmail.com> Ok,Thanks. I will send an improved V3 PATCH. Regards, Yang > >> Cc: Leif Lindholm <quic_llindhol@quicinc.com> >> Cc: Ard Biesheuvel <ardb@kernel.org> >> Cc: Ran Wang <wangran@bosc.ac.cn> >> >> Signed-off-by: Yang Wang <wangyzhaoz@163.com> >> --- >> .../Drivers/DwEmacSnpDxe/EmacDxeUtil.c | 22 ++++++++++++------- >> 1 file changed, 14 insertions(+), 8 deletions(-) >> >> diff --git a/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c b/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c >> index 3b982ce984..26d3ff6138 100755 >> --- a/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c >> +++ b/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c >> @@ -500,24 +500,30 @@ EmacGetDmaStatus ( >> UINT32 ErrorBit; >> UINT32 Mask = 0; >> >> + if (IrqStat != NULL) { >> + *IrqStat = 0; >> + } >> + >> DmaStatus = MmioRead32 (MacBaseAddress + >> DW_EMAC_DMAGRP_STATUS_OFST); >> if (DmaStatus & DW_EMAC_DMAGRP_STATUS_NIS_SET_MSK) { >> Mask |= DW_EMAC_DMAGRP_STATUS_NIS_SET_MSK; >> // Rx interrupt >> if (DmaStatus & DW_EMAC_DMAGRP_STATUS_RI_SET_MSK) { >> - *IrqStat |= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT; >> - Mask |= DW_EMAC_DMAGRP_STATUS_RI_SET_MSK; >> - } else { >> - *IrqStat &= ~EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT; >> + if (IrqStat != NULL) { >> + *IrqStat |= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT; >> + Mask |= DW_EMAC_DMAGRP_STATUS_RI_SET_MSK; >> + } >> } >> + >> // Tx interrupt >> if (DmaStatus & DW_EMAC_DMAGRP_STATUS_TI_SET_MSK) { >> - *IrqStat |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT; >> - Mask |= DW_EMAC_DMAGRP_STATUS_TI_SET_MSK; >> - } else { >> - *IrqStat &= ~EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT; >> + if (IrqStat != NULL) { >> + *IrqStat |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT; >> + Mask |= DW_EMAC_DMAGRP_STATUS_TI_SET_MSK; >> + } >> } >> + >> // Tx Buffer >> if (DmaStatus & DW_EMAC_DMAGRP_STATUS_TU_SET_MSK){ >> Mask |= DW_EMAC_DMAGRP_STATUS_TU_SET_MSK; >> -- >> 2.25.1 >> >> >> >> ------------ >> Groups.io Links: You receive all messages sent to this group. >> View/Reply Online (#107311): https://edk2.groups.io/g/devel/message/107311 >> Mute This Topic: https://groups.io/mt/100404855/5946980 >> Group Owner: devel+owner@edk2.groups.io >> Unsubscribe: https://edk2.groups.io/g/devel/unsub [pedro.falcato@gmail.com] >> ------------ >> >> > > >-- >Pedro -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#107392): https://edk2.groups.io/g/devel/message/107392 Mute This Topic: https://groups.io/mt/100404855/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=-=-=-=-=-=-=-=-=-=-=-
On Fri, 28 Jul 2023 at 21:40, Pedro Falcato <pedro.falcato@gmail.com> wrote: > > On Fri, Jul 28, 2023 at 5:00 AM wangy <wangyzhaoz@163.com> wrote: > > > > From: Yang Wang <wangyzhaoz@163.com> > > > > If IrqStat is NULL, the interrupt status will not be > > read from the device.When the interrupt status is read, > > it will also be cleared. > > Let's improve the commit message a bit, something like: > > The EFI spec (see UEFI 2.10, 24.1.12) requires > EFI_SIMPLE_NETWORK.GetStatus() to handle NULL InterruptStatus pointers > by not reading nor clearing the interrupt status from the device. > > However, EmacGetDmaStatus (part of the DwEmacSnpDxe GetStatus() > implementation) did not correctly handle NULL IrqStat, despite already > being tagged as an OPTIONAL argument. This made calling GetStatus() > with a NULL pointer (for example, the call in MnpRecycleTxBuf) either > corrupt memory or straight-up crash. > > Make it EFI spec compliant, by adding proper NULL pointer checks > around RI_SET_MSK and TI_SET_MSK retrieval/clearing. > > -- > > In any case, take my: > > Acked-by: Pedro Falcato <pedro.falcato@gmail.com> > Thanks, I've pushed this as 4f316893c9ed..cbab3c40f76e with the suggested update for the commit message. > > Cc: Leif Lindholm <quic_llindhol@quicinc.com> > > Cc: Ard Biesheuvel <ardb@kernel.org> > > Cc: Ran Wang <wangran@bosc.ac.cn> > > > > Signed-off-by: Yang Wang <wangyzhaoz@163.com> > > --- > > .../Drivers/DwEmacSnpDxe/EmacDxeUtil.c | 22 ++++++++++++------- > > 1 file changed, 14 insertions(+), 8 deletions(-) > > > > diff --git a/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c b/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c > > index 3b982ce984..26d3ff6138 100755 > > --- a/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c > > +++ b/Silicon/Synopsys/DesignWare/Drivers/DwEmacSnpDxe/EmacDxeUtil.c > > @@ -500,24 +500,30 @@ EmacGetDmaStatus ( > > UINT32 ErrorBit; > > UINT32 Mask = 0; > > > > + if (IrqStat != NULL) { > > + *IrqStat = 0; > > + } > > + > > DmaStatus = MmioRead32 (MacBaseAddress + > > DW_EMAC_DMAGRP_STATUS_OFST); > > if (DmaStatus & DW_EMAC_DMAGRP_STATUS_NIS_SET_MSK) { > > Mask |= DW_EMAC_DMAGRP_STATUS_NIS_SET_MSK; > > // Rx interrupt > > if (DmaStatus & DW_EMAC_DMAGRP_STATUS_RI_SET_MSK) { > > - *IrqStat |= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT; > > - Mask |= DW_EMAC_DMAGRP_STATUS_RI_SET_MSK; > > - } else { > > - *IrqStat &= ~EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT; > > + if (IrqStat != NULL) { > > + *IrqStat |= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT; > > + Mask |= DW_EMAC_DMAGRP_STATUS_RI_SET_MSK; > > + } > > } > > + > > // Tx interrupt > > if (DmaStatus & DW_EMAC_DMAGRP_STATUS_TI_SET_MSK) { > > - *IrqStat |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT; > > - Mask |= DW_EMAC_DMAGRP_STATUS_TI_SET_MSK; > > - } else { > > - *IrqStat &= ~EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT; > > + if (IrqStat != NULL) { > > + *IrqStat |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT; > > + Mask |= DW_EMAC_DMAGRP_STATUS_TI_SET_MSK; > > + } > > } > > + > > // Tx Buffer > > if (DmaStatus & DW_EMAC_DMAGRP_STATUS_TU_SET_MSK){ > > Mask |= DW_EMAC_DMAGRP_STATUS_TU_SET_MSK; > > -- > > 2.25.1 > > > > > > > > ------------ > > Groups.io Links: You receive all messages sent to this group. > > View/Reply Online (#107311): https://edk2.groups.io/g/devel/message/107311 > > Mute This Topic: https://groups.io/mt/100404855/5946980 > > Group Owner: devel+owner@edk2.groups.io > > Unsubscribe: https://edk2.groups.io/g/devel/unsub [pedro.falcato@gmail.com] > > ------------ > > > > > > > -- > Pedro -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#107377): https://edk2.groups.io/g/devel/message/107377 Mute This Topic: https://groups.io/mt/100404855/1787277 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [importer@patchew.org] -=-=-=-=-=-=-=-=-=-=-=-
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