[PATCH v4 04/14] net: ionic: Provide RDMA reset support for the RDMA driver
From: Abhijit Gangurde <abhijit.gangurde@amd.com>
Date: 2025-07-23 17:32:29
Also in:
linux-doc, linux-rdma, lkml
Subsystem:
networking drivers, pensando ethernet drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Brett Creeley, Linus Torvalds
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 <redacted> Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com> --- .../net/ethernet/pensando/ionic/ionic_api.h | 9 ++++++++ .../net/ethernet/pensando/ionic/ionic_aux.c | 22 +++++++++++++++++++ 2 files changed, 31 insertions(+)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_api.h b/drivers/net/ethernet/pensando/ionic/ionic_api.h
index d75902ca34af..e0b766d1769f 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_api.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_api.h@@ -54,4 +54,13 @@ int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx); */ int ionic_error_to_errno(enum ionic_status_code code); +/** + * ionic_request_rdma_reset - request reset or disable the device or lif + * @lif: Logical interface + * + * The reset is triggered asynchronously. It will wait until reset request + * completes or times out. + */ +void ionic_request_rdma_reset(struct ionic_lif *lif); + #endif /* _IONIC_API_H_ */
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_aux.c b/drivers/net/ethernet/pensando/ionic/ionic_aux.c
index 781218c3feba..6cd4c718836c 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_aux.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_aux.c@@ -93,3 +93,25 @@ void ionic_auxbus_unregister(struct ionic_lif *lif) out: mutex_unlock(&lif->adev_lock); } + +void ionic_request_rdma_reset(struct ionic_lif *lif) +{ + struct ionic *ionic = lif->ionic; + int err; + + union ionic_dev_cmd cmd = { + .cmd.opcode = IONIC_CMD_RDMA_RESET_LIF, + .cmd.lif_index = cpu_to_le16(lif->index), + }; + + mutex_lock(&ionic->dev_cmd_lock); + + ionic_dev_cmd_go(&ionic->idev, &cmd); + err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); + + mutex_unlock(&ionic->dev_cmd_lock); + + if (err) + pr_warn("%s request_reset: error %d\n", __func__, err); +} +EXPORT_SYMBOL_NS(ionic_request_rdma_reset, "NET_IONIC");
--
2.43.0