kernel/drivers/net/ethernet/pensando, branch linux-6.18.y

ionic: Rate limit unknown xcvr type messages

2026-02-26T22:59:23Z

[ Upstream commit cdb1634de3bf197c0d86487d1fb84c128a79cc7c ] Running ethtool repeatedly with a transceiver unknown to the driver or firmware will cause the driver to spam the kernel logs with "unknown xcvr type" messages which can distract from real issues; and this isn't interesting information outside of debugging. Fix this by rate limiting the output so that there are still notifications but not so many that they flood the log. Using dev_dbg_once() would reduce the number of messages further, but this would miss the case where a different unknown transceiver type is plugged in, and its status is requested. Fixes: 4d03e00a2140 ("ionic: Add initial ethtool support") Signed-off-by: Eric Joyner Reviewed-by: Brett Creeley Link: https://patch.msgid.link/20260206224651.1491-1-eric.joyner@amd.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

net: ionic: map SKB after pseudo-header checksum prep

2025-11-04T01:19:21Z

The TSO path called ionic_tx_map_skb() before preparing the TCP pseudo checksum (ionic_tx_tcp_[inner_]pseudo_csum()), which may perform skb_cow_head() and might modifies bytes in the linear header area. Mapping first and then mutating the header risks: - Using a stale DMA address if skb_cow_head() relocates the head, and/or - Device reading stale header bytes on weakly-ordered systems (CPU writes after mapping are not guaranteed visible without an explicit dma_sync_single_for_device()). Reorder the TX path to perform all header mutations (including skb_cow_head()) *before* DMA mapping. Mapping is now done only after the skb layout and header contents are final. This removes the need for any post-mapping dma_sync and prevents on-wire corruption observed under VLAN+TSO load after repeated runs. This change is purely an ordering fix; no functional behavior change otherwise. Fixes: 0f3154e6bcb3 ("ionic: Add Tx and Rx handling") Signed-off-by: Mohammad Heib Reviewed-by: Brett Creeley Link: https://patch.msgid.link/20251031155203.203031-2-mheib@redhat.com Signed-off-by: Jakub Kicinski

net: ionic: add dma_wmb() before ringing TX doorbell

2025-11-04T01:19:21Z

The TX path currently writes descriptors and then immediately writes to the MMIO doorbell register to notify the NIC. On weakly ordered architectures, descriptor writes may still be pending in CPU or DMA write buffers when the doorbell is issued, leading to the device fetching stale or incomplete descriptors. Add a dma_wmb() in ionic_txq_post() to ensure all descriptor writes are visible to the device before the doorbell MMIO write. Fixes: 0f3154e6bcb3 ("ionic: Add Tx and Rx handling") Signed-off-by: Mohammad Heib Link: https://patch.msgid.link/20251031155203.203031-1-mheib@redhat.com Signed-off-by: Jakub Kicinski

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

2025-10-04T01:35:22Z

Pull rdma updates from Jason Gunthorpe: "A new Pensando ionic driver, a new Gen 3 HW support for Intel irdma, and lots of small bnxt_re improvements. - Small bug fixes and improves to hfi1, efa, mlx5, erdma, rdmarvt, siw - Allow userspace access to IB service records through the rdmacm - Optimize dma mapping for erdma - Fix shutdown of the GSI QP in mana - Support relaxed ordering MR and fix a corruption bug with mlx5 DMA Data Direct - Many improvement to bnxt_re: - Debugging features and counters - Improve performance of some commands - Change flow_label reporting in completions - Mirror vnic - RDMA flow support - New RDMA driver for Pensando Ethernet devices: ionic - Gen 3 hardware support for the Intel irdma driver - Fix rdma routing resolution with VRFs" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (85 commits) RDMA/ionic: Fix memory leak of admin q_wr RDMA/siw: Always report immediate post SQ errors RDMA/bnxt_re: improve clarity in ALLOC_PAGE handler RDMA/irdma: Remove unused struct irdma_cq fields RDMA/irdma: Fix positive vs negative error codes in irdma_post_send() RDMA/bnxt_re: Remove non-statistics counters from hw_counters RDMA/bnxt_re: Add debugfs info entry for device and resource information RDMA/bnxt_re: Fix incorrect errno used in function comments RDMA: Use %pe format specifier for error pointers RDMA/ionic: Use ether_addr_copy instead of memcpy RDMA/ionic: Fix build failure on SPARC due to xchg() operand size RDMA/rxe: Fix race in do_task() when draining IB/sa: Fix sa_local_svc_timeout_ms read race IB/ipoib: Ignore L3 master device RDMA/core: Use route entry flag to decide on loopback traffic RDMA/core: Resolve MAC of next-hop device without ARP support RDMA/core: Squash a single user static function RDMA/irdma: Update Kconfig RDMA/irdma: Extend CQE Error and Flush Handling for GEN3 Devices RDMA/irdma: Add Atomic Operations support ...

ionic: use int type for err in ionic_get_module_eeprom_by_page

2025-09-14T20:19:21Z

The variable 'err' is declared as u32, but it is used to store negative error codes such as -EINVAL. Changing the type of 'err' to int ensures proper representation of negative error codes and aligns with standard kernel error handling conventions. Also, there is no need to initialize 'err' since it is always set before being used. Signed-off-by: Alok Tiwari Reviewed-by: Shannon Nelson Reviewed-by: Brett Creeley Link: https://patch.msgid.link/20250912141426.3922545-1-alok.a.tiwari@oracle.com Signed-off-by: Jakub Kicinski

net: ionic: Provide doorbell and CMB region information

2025-09-11T06:18:36Z

The RDMA device needs information of controller memory bar and doorbell capability to share with user context. Discover CMB regions and express doorbell capabilities on device init. Reviewed-by: Shannon Nelson Co-developed-by: Pablo Cascón Signed-off-by: Pablo Cascón Co-developed-by: Allen Hubbe Signed-off-by: Allen Hubbe Signed-off-by: Abhijit Gangurde Link: https://patch.msgid.link/20250903061606.4139957-7-abhijit.gangurde@amd.com Signed-off-by: Leon Romanovsky

net: ionic: Provide interrupt allocation support for the RDMA driver

2025-09-11T06:18:36Z

RDMA driver needs an interrupt for an event queue. Export function from net driver to allocate an interrupt. Reviewed-by: Shannon Nelson Signed-off-by: Abhijit Gangurde Link: https://patch.msgid.link/20250903061606.4139957-6-abhijit.gangurde@amd.com Signed-off-by: Leon Romanovsky

net: ionic: Provide RDMA reset support for the RDMA driver

2025-09-11T06:18:36Z

The Ethernet driver holds the privilege to execute the device commands. Export the function to execute RDMA reset command for use by RDMA driver. Reviewed-by: Shannon Nelson Signed-off-by: Abhijit Gangurde Link: https://patch.msgid.link/20250903061606.4139957-5-abhijit.gangurde@amd.com Signed-off-by: Leon Romanovsky

net: ionic: Export the APIs from net driver to support device commands

2025-09-11T06:18:35Z

RDMA driver needs to establish admin queues to support admin operations. Export the APIs to send device commands for the RDMA driver. Reviewed-by: Shannon Nelson Signed-off-by: Abhijit Gangurde Link: https://patch.msgid.link/20250903061606.4139957-4-abhijit.gangurde@amd.com Signed-off-by: Leon Romanovsky

net: ionic: Update LIF identity with additional RDMA capabilities

2025-09-11T06:18:35Z

Firmware sends the RDMA capability in a response for LIF_IDENTIFY device command. Update the LIF indentify with additional RDMA capabilities used by driver and firmware. Reviewed-by: Shannon Nelson Reviewed-by: Simon Horman Signed-off-by: Abhijit Gangurde Link: https://patch.msgid.link/20250903061606.4139957-3-abhijit.gangurde@amd.com Signed-off-by: Leon Romanovsky