Hi, Gentle ping for reviews.
>-----Original Message----- >From: Vamsi Krishna <[email protected]> >Sent: Thursday, July 10, 2025 2:21 PM >To: [email protected]; [email protected]; Pavan Nikhilesh >Bhagavatula <[email protected]>; [email protected]; >[email protected]; [email protected] >Cc: Jerin Jacob <[email protected]>; [email protected]; Vamsi Krishna >Attunuru <[email protected]> >Subject: [PATCH v0 1/1] doc: announce inter-device DMA capability support in >dmadev > >From: Vamsi Attunuru <[email protected]> > >Modern DMA hardware supports data transfer between multiple DMA >devices, enabling data communication across isolated domains or containers. >To facilitate this, the ``dmadev`` library requires changes to allow devices to >register with or unregisters from DMA groups for inter-device communication. >This feature is planned for inclusion in DPDK 25.11. > >Signed-off-by: Vamsi Attunuru <[email protected]> >--- > doc/guides/rel_notes/deprecation.rst | 7 +++++++ > 1 file changed, 7 insertions(+) > >diff --git a/doc/guides/rel_notes/deprecation.rst >b/doc/guides/rel_notes/deprecation.rst >index e2d4125308..46836244dd 100644 >--- a/doc/guides/rel_notes/deprecation.rst >+++ b/doc/guides/rel_notes/deprecation.rst >@@ -152,3 +152,10 @@ Deprecation Notices > * bus/vmbus: Starting DPDK 25.11, all the vmbus API defined in > ``drivers/bus/vmbus/rte_bus_vmbus.h`` will become internal to DPDK. > Those API functions are used internally by DPDK core and netvsc PMD. >+ >+* dmadev: a new capability flag ``RTE_DMA_CAPA_INTER_DEV`` will be >+added >+ to advertise DMA device's inter-device DMA copy capability. To enable >+ this functionality, a few dmadev APIs will be added to configure the >+DMA >+ access groups, facilitating coordinated data communication between >devices. >+ A new ``dev_idx`` field will be added to the ``struct >+rte_dma_vchan_conf`` >+ structure to configure a vchan for data transfers between any two DMA >devices. >-- >2.34.1
