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Satish Kharat says: ==================== enic: SR-IOV V2 admin channel and MBOX protocol This series adds the admin channel infrastructure and mailbox (MBOX) protocol needed for V2 SR-IOV support in the enic driver. The V2 SR-IOV design uses a direct PF-VF communication channel built on dedicated WQ/RQ/CQ hardware resources and an MSI-X interrupt. This series touches enic_remove(), which is also modified by a fix already applied to net: enic: fix tx_hang_reset use-after-free on device removal https://git.kernel.org/netdev/net/c/ec680ea4ba1b That fix was previously carried at the head of this series (patch 1 in v10-v12); it has been split out and applied to net separately. This net-next series no longer includes it and applies cleanly on current net-next, which already contains that fix (via the net -> net-next merge); the overlapping enic_remove() teardown-ordering change is incorporated in this series. Firmware capability and admin channel infrastructure (patches 1-4): - Probe-time firmware feature check for V2 SR-IOV support - Admin channel open/close, RQ buffer management, CQ service with MSI-X interrupt and workqueue-based polling MBOX protocol and VF enable (patches 5-10): - MBOX message types, core send/receive, PF and VF handlers - V2 SR-IOV enable wiring with admin channel setup - V2 VF probe with admin channel and PF registration Patch 11 completes reset recovery for V2 VFs: the reset paths added earlier in the series re-establish the admin channel only for the PF, which left a VF unregistered and unable to exchange MBOX traffic after a reset taken on the VF. Known follow-ups (not blocking this series; the V2 PF data path is not yet activated and V2 VFs are brought up only in a later series that wires .sriov_configure): - Full request/reply correlation by msg_num requires the MBOX peer to echo the request number; this series retains the existing single-outstanding-request model with reply-type gating. - PF-side registration synchronization, initial link-state retry, and admin control-message throttling will be completed alongside the .sriov_configure enablement. ==================== Link: https://patch.msgid.link/20260812-enic-sriov-v2-admin-channel-v2-v13-0-b3809e448aba@cisco.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linux kernel ============ The Linux kernel is the core of any Linux operating system. It manages hardware, system resources, and provides the fundamental services for all other software. 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