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

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: Create an auxiliary device for rdma driver

2025-09-11T06:18:35Z

To support RDMA capable ethernet device, create an auxiliary device in the ionic Ethernet driver. The RDMA device is modeled as an auxiliary device to the Ethernet device. Reviewed-by: Shannon Nelson Signed-off-by: Abhijit Gangurde Link: https://patch.msgid.link/20250903061606.4139957-2-abhijit.gangurde@amd.com Signed-off-by: Leon Romanovsky

ionic: clean dbpage in de-init

2025-06-13T09:31:06Z

Since the kern_dbpage gets set up in ionic_lif_init() and that function's error path will clean it if needed, the kern_dbpage on teardown should be cleaned in ionic_lif_deinit(), not in ionic_lif_free(). As it is currently we get a double call to iounmap() on kern_dbpage if the PCI ionic fails setting up the lif. One example of this is when firmware isn't responding to AdminQ requests and ionic's first AdminQ call fails to setup the NotifyQ. Signed-off-by: Shannon Nelson Reviewed-by: Simon Horman Reviewed-by: Joe Damato Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2024-12-19T19:35:07Z

Cross-merge networking fixes after downstream PR (net-6.13-rc4). No conflicts. Adjacent changes: drivers/net/ethernet/renesas/rswitch.h 32fd46f5b69e ("net: renesas: rswitch: remove speed from gwca structure") 922b4b955a03 ("net: renesas: rswitch: rework ts tags management") Signed-off-by: Jakub Kicinski

ionic: Fix netdev notifier unregister on failure

2024-12-15T22:33:31Z

If register_netdev() fails, then the driver leaks the netdev notifier. Fix this by calling ionic_lif_unregister() on register_netdev() failure. This will also call ionic_lif_unregister_phc() if it has already been registered. Fixes: 30b87ab4c0b3 ("ionic: remove lif list concept") Signed-off-by: Brett Creeley Signed-off-by: Shannon Nelson Reviewed-by: Jacob Keller Link: https://patch.msgid.link/20241212213157.12212-2-shannon.nelson@amd.com Signed-off-by: Jakub Kicinski

ionic: remove the unused nb_work

2024-12-15T21:51:35Z

Remove the empty and unused nb_work and associated ionic_lif_notify_work() function. v2: separated from previous net patch Link: https://lore.kernel.org/netdev/20241210174828.69525-2-shannon.nelson@amd.com/ Signed-off-by: Brett Creeley Signed-off-by: Shannon Nelson Reviewed-by: Jacob Keller Reviewed-by: Kalesh AP Link: https://patch.msgid.link/20241212212042.9348-1-shannon.nelson@amd.com Signed-off-by: Jakub Kicinski

ionic: Use VLAN_ETH_HLEN when possible

2024-12-12T11:06:33Z

Replace when ETH_HLEN and VLAN_HLEN are used together with VLAN_ETH_HLEN since it's the same value and uses 1 define instead of 2. Signed-off-by: Brett Creeley Signed-off-by: Shannon Nelson Reviewed-by: Jacob Keller Reviewed-by: Kalesh AP Signed-off-by: Paolo Abeni

ionic: Allow XDP program to be hot swapped

2024-09-10T02:18:15Z

Using examples of other driver(s), add the ability to hot-swap an XDP program without having to reconfigure the queues. To prevent the q->xdp_prog to be read/written more than once use READ_ONCE() and WRITE_ONCE() on the q->xdp_prog. The q->xdp_prog was being checked in multiple different for loops in the hot path. The change to allow xdp_prog hot swapping created the possibility for many READ_ONCE(q->xdp_prog) calls during a single napi callback. Refactor the Rx napi handling to allow a previous READ_ONCE(q->xdp_prog) (or NULL for hwstamp_rxq) to be passed into the relevant functions. Also, move other Rx related hotpath handling into the newly created ionic_rx_cq_service() function to reduce the scope of the xdp_prog local variable and put all Rx handling in one function similar to Tx. Signed-off-by: Brett Creeley Signed-off-by: Shannon Nelson Link: https://patch.msgid.link/20240906232623.39651-8-brett.creeley@amd.com Signed-off-by: Jakub Kicinski

ionic: convert Rx queue buffers to use page_pool

2024-09-10T02:18:15Z

Our home-grown buffer management needs to go away and we need to be playing nicely with the page_pool infrastructure. This converts the Rx traffic queues to use page_pool. Also, since ionic_rx_buf_size() was removed, redefine IONIC_PAGE_SIZE to account for IONIC_MAX_BUF_LEN being the largest allowed buffer to prevent overflowing u16 variables, which could happen when PAGE_SIZE is defined as >= 64KB. include/linux/minmax.h:93:37: warning: conversion from 'long unsigned int' to 'u16' {aka 'short unsigned int'} changes value from '65536' to '0' [-Woverflow] Signed-off-by: Shannon Nelson Signed-off-by: Brett Creeley Link: https://patch.msgid.link/20240906232623.39651-7-brett.creeley@amd.com Signed-off-by: Jakub Kicinski