Message-ID: <Zhzny769lYYmLUs0@mev-dev>
Date: Mon, 15 Apr 2024 10:39:39 +0200
From: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
To: Jiri Pirko <jiri@...nulli.us>
Cc: intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
	jacob.e.keller@...el.com, michal.kubiak@...el.com,
	maciej.fijalkowski@...el.com, sridhar.samudrala@...el.com,
	przemyslaw.kitszel@...el.com, wojciech.drewek@...el.com,
	pio.raczynski@...il.com, jiri@...dia.com,
	nex.sw.ncis.osdt.itp.upstreaming@...el.com,
	mateusz.polchlopek@...el.com,
	Piotr Raczynski <piotr.raczynski@...el.com>
Subject: Re: [iwl-next v3 3/7] ice: add basic devlink subfunctions support

On Fri, Apr 12, 2024 at 09:12:18AM +0200, Jiri Pirko wrote:
> Fri, Apr 12, 2024 at 08:30:49AM CEST, michal.swiatkowski@...ux.intel.com wrote:
> >From: Piotr Raczynski <piotr.raczynski@...el.com>
> >
> >Implement devlink port handlers responsible for ethernet type devlink
> >subfunctions. Create subfunction devlink port and setup all resources
> >needed for a subfunction netdev to operate. Configure new VSI for each
> >new subfunction, initialize and configure interrupts and Tx/Rx resources.
> >Set correct MAC filters and create new netdev.
> >
> >For now, subfunction is limited to only one Tx/Rx queue pair.
> >
> >Only allocate new subfunction VSI with devlink port new command.
> >This makes sure that real resources are configured only when a new
> >subfunction gets activated. Allocate and free subfunction MSIX
> >interrupt vectors using new API calls with pci_msix_alloc_irq_at
> >and pci_msix_free_irq.
> >
> >Support both automatic and manual subfunction numbers. If no subfunction
> >number is provided, use xa_alloc to pick a number automatically. This
> >will find the first free index and use that as the number. This reduces
> >burden on users in the simple case where a specific number is not
> >required. It may also be slightly faster to check that a number exists
> >since xarray lookup should be faster than a linear scan of the dyn_ports
> >xarray.
> >
> >Reviewed-by: Wojciech Drewek <wojciech.drewek@...el.com>
> >Co-developed-by: Jacob Keller <jacob.e.keller@...el.com>
> >Signed-off-by: Jacob Keller <jacob.e.keller@...el.com>
> >Signed-off-by: Piotr Raczynski <piotr.raczynski@...el.com>
> >Signed-off-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
> >---
> > .../net/ethernet/intel/ice/devlink/devlink.c  |   3 +
> > .../ethernet/intel/ice/devlink/devlink_port.c | 454 ++++++++++++++++++
> > .../ethernet/intel/ice/devlink/devlink_port.h |  30 ++
> > drivers/net/ethernet/intel/ice/ice.h          |   4 +
> > drivers/net/ethernet/intel/ice/ice_lib.c      |   5 +-
> > drivers/net/ethernet/intel/ice/ice_lib.h      |   2 +
> > drivers/net/ethernet/intel/ice/ice_main.c     |  12 +-
> > 7 files changed, 506 insertions(+), 4 deletions(-)
> >
> >diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink.c b/drivers/net/ethernet/intel/ice/devlink/devlink.c
> >index b179eaccc774..661af04c8eef 100644
> >--- a/drivers/net/ethernet/intel/ice/devlink/devlink.c
> >+++ b/drivers/net/ethernet/intel/ice/devlink/devlink.c
> >@@ -6,6 +6,7 @@
> > #include "ice.h"
> > #include "ice_lib.h"
> > #include "devlink.h"
> >+#include "devlink_port.h"
> > #include "ice_eswitch.h"
> > #include "ice_fw_update.h"
> > #include "ice_dcb_lib.h"
> >@@ -1281,6 +1282,8 @@ static const struct devlink_ops ice_devlink_ops = {
> > 
> > 	.rate_leaf_parent_set = ice_devlink_set_parent,
> > 	.rate_node_parent_set = ice_devlink_set_parent,
> >+
> >+	.port_new = ice_devlink_port_new,
> > };
> > 
> > static int
> >diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink_port.c b/drivers/net/ethernet/intel/ice/devlink/devlink_port.c
> >index 13e6790d3cae..f5e305a71bd0 100644
> >--- a/drivers/net/ethernet/intel/ice/devlink/devlink_port.c
> >+++ b/drivers/net/ethernet/intel/ice/devlink/devlink_port.c
> >@@ -5,6 +5,9 @@
> > 
> > #include "ice.h"
> > #include "devlink.h"
> >+#include "devlink_port.h"
> >+#include "ice_lib.h"
> >+#include "ice_fltr.h"
> > 
> > static int ice_active_port_option = -1;
> > 
> >@@ -428,3 +431,454 @@ void ice_devlink_destroy_vf_port(struct ice_vf *vf)
> > 	devl_rate_leaf_destroy(&vf->devlink_port);
> > 	devlink_port_unregister(&vf->devlink_port);
> > }
> >+
> >+/**
> >+ * ice_activate_dynamic_port - Activate a dynamic port
> >+ * @dyn_port: dynamic port instance to activate
> >+ * @extack: extack for reporting error messages
> >+ *
> >+ * Activate the dynamic port based on its flavour.
> >+ *
> >+ * Return: zero on success or an error code on failure.
> >+ */
> >+static int
> >+ice_activate_dynamic_port(struct ice_dynamic_port *dyn_port,
> >+			  struct netlink_ext_ack *extack)
> >+{
> >+	dyn_port->active = true;
> >+	return 0;
> 
> This is odd. You do dummy activation, the actual activation function is
> added later on in this patchset. Could you please reorder the patches so
> this one is the last one? When user does activation, everything should
> work now.
> 

Ok, I will reorder the changes.

> 
> >+
> >+}
> >+
> >+/**
> >+ * ice_deactivate_dynamic_port - Deactivate a dynamic port
> >+ * @dyn_port: dynamic port instance to deactivate
> >+ *
> >+ * Undo activation of a dynamic port.
> >+ */
> >+static void ice_deactivate_dynamic_port(struct ice_dynamic_port *dyn_port)
> >+{
> >+	dyn_port->active = false;
> >+}
> >+
> >+/**
> >+ * ice_dealloc_dynamic_port - Deallocate and remove a dynamic port
> >+ * @dyn_port: dynamic port instance to deallocate
> >+ *
> >+ * Free resources associated with a dynamically added devlink port. Will
> >+ * deactivate the port if its currently active.
> >+ */
> >+static void ice_dealloc_dynamic_port(struct ice_dynamic_port *dyn_port)
> >+{
> >+	struct devlink_port *devlink_port = &dyn_port->devlink_port;
> >+	struct ice_pf *pf = dyn_port->pf;
> >+
> >+	if (dyn_port->active)
> >+		ice_deactivate_dynamic_port(dyn_port);
> >+
> >+	xa_erase(&pf->sf_nums, devlink_port->attrs.pci_sf.sf);
> >+	devl_port_unregister(devlink_port);
> >+	ice_vsi_free(dyn_port->vsi);
> >+	xa_erase(&pf->dyn_ports, dyn_port->vsi->idx);
> >+	kfree(dyn_port);
> >+}
> >+
> >+/**
> >+ * ice_dealloc_all_dynamic_ports - Deallocate all dynamic devlink ports
> >+ * @pf: pointer to the pf structure
> >+ */
> >+void ice_dealloc_all_dynamic_ports(struct ice_pf *pf)
> >+{
> >+	struct ice_dynamic_port *dyn_port;
> >+	unsigned long index;
> >+
> >+	xa_for_each(&pf->dyn_ports, index, dyn_port)
> >+		ice_dealloc_dynamic_port(dyn_port);
> >+}
> >+
> >+/**
> >+ * ice_devlink_port_new_check_attr - Check that new port attributes are valid
> >+ * @pf: pointer to the PF structure
> >+ * @new_attr: the attributes for the new port
> >+ * @extack: extack for reporting error messages
> >+ *
> >+ * Check that the attributes for the new port are valid before continuing to
> >+ * allocate the devlink port.
> >+ *
> >+ * Return: zero on success or an error code on failure.
> >+ */
> >+static int
> >+ice_devlink_port_new_check_attr(struct ice_pf *pf,
> >+				const struct devlink_port_new_attrs *new_attr,
> >+				struct netlink_ext_ack *extack)
> >+{
> >+	if (new_attr->flavour != DEVLINK_PORT_FLAVOUR_PCI_SF) {
> >+		NL_SET_ERR_MSG_MOD(extack, "Flavour other than pcisf is not supported");
> >+		return -EOPNOTSUPP;
> >+	}
> >+
> >+	if (new_attr->controller_valid) {
> >+		NL_SET_ERR_MSG_MOD(extack, "Setting controller is not supported");
> >+		return -EOPNOTSUPP;
> >+	}
> >+
> >+	if (new_attr->port_index_valid) {
> >+		NL_SET_ERR_MSG_MOD(extack, "Port index");
> 
> Odd error message, please fix.
>

Sure, I will rephrase.

> 
> >+		return -EOPNOTSUPP;
> >+	}
> >+
> >+	if (new_attr->pfnum != pf->hw.bus.func) {
> >+		NL_SET_ERR_MSG_MOD(extack, "Incorrect pfnum supplied");
> >+		return -EINVAL;
> >+	}
> >+
> >+	if (!pci_msix_can_alloc_dyn(pf->pdev)) {
> >+		NL_SET_ERR_MSG_MOD(extack, "Dynamic MSIX-X interrupt allocation is not supported");
> >+		return -EOPNOTSUPP;
> >+	}
> >+
> >+	return 0;
> >+}
> >+
> >+/**
> >+ * ice_devlink_port_del - devlink handler for port delete
> >+ * @devlink: pointer to devlink
> >+ * @port: devlink port to be deleted
> >+ * @extack: pointer to extack
> >+ *
> >+ * Deletes devlink port and deallocates all resources associated with
> >+ * created subfunction.
> >+ *
> >+ * Return: zero on success or an error code on failure.
> >+ */
> >+static int
> >+ice_devlink_port_del(struct devlink *devlink, struct devlink_port *port,
> >+		     struct netlink_ext_ack *extack)
> >+{
> >+	struct ice_dynamic_port *dyn_port;
> >+
> >+	dyn_port = ice_devlink_port_to_dyn(port);
> >+	ice_dealloc_dynamic_port(dyn_port);
> >+
> >+	return 0;
> >+}
> >+
> >+/**
> >+ * ice_devlink_port_fn_hw_addr_set - devlink handler for mac address set
> >+ * @port: pointer to devlink port
> >+ * @hw_addr: hw address to set
> >+ * @hw_addr_len: hw address length
> >+ * @extack: extack for reporting error messages
> >+ *
> >+ * Sets mac address for the port, verifies arguments and copies address
> >+ * to the subfunction structure.
> >+ *
> >+ * Return: zero on success or an error code on failure.
> >+ */
> >+static int
> >+ice_devlink_port_fn_hw_addr_set(struct devlink_port *port, const u8 *hw_addr,
> >+				int hw_addr_len,
> >+				struct netlink_ext_ack *extack)
> >+{
> >+	struct ice_dynamic_port *dyn_port;
> >+
> >+	dyn_port = ice_devlink_port_to_dyn(port);
> >+
> >+	if (hw_addr_len != ETH_ALEN || !is_valid_ether_addr(hw_addr)) {
> >+		NL_SET_ERR_MSG_MOD(extack, "Invalid ethernet address");
> >+		return -EADDRNOTAVAIL;
> >+	}
> >+
> >+	if (ether_addr_equal(dyn_port->hw_addr, hw_addr)) {
> >+		NL_SET_ERR_MSG_MOD(extack, "Address already set");
> 
> Is this message necessary? It will print out a warning for user.
>

Right, will remove the message.

> 
> >+		return 0;
> >+	}
> >+
> >+	ether_addr_copy(dyn_port->hw_addr, hw_addr);
> >+
> >+	return 0;
> >+}
> >+
> >+/**
> >+ * ice_devlink_port_fn_hw_addr_get - devlink handler for mac address get
> >+ * @port: pointer to devlink port
> >+ * @hw_addr: hw address to set
> >+ * @hw_addr_len: hw address length
> >+ * @extack: extack for reporting error messages
> >+ *
> >+ * Returns mac address for the port.
> >+ *
> >+ * Return: zero on success or an error code on failure.
> >+ */
> >+static int
> >+ice_devlink_port_fn_hw_addr_get(struct devlink_port *port, u8 *hw_addr,
> >+				int *hw_addr_len,
> >+				struct netlink_ext_ack *extack)
> >+{
> >+	struct ice_dynamic_port *dyn_port;
> >+
> >+	dyn_port = ice_devlink_port_to_dyn(port);
> >+
> >+	ether_addr_copy(hw_addr, dyn_port->hw_addr);
> >+	*hw_addr_len = ETH_ALEN;
> >+
> >+	return 0;
> >+}
> >+
> >+/**
> >+ * ice_devlink_port_fn_state_set - devlink handler for port state set
> >+ * @port: pointer to devlink port
> >+ * @state: state to set
> >+ * @extack: extack for reporting error messages
> >+ *
> >+ * Activates or deactivates the port.
> >+ *
> >+ * Return: zero on success or an error code on failure.
> >+ */
> >+static int
> >+ice_devlink_port_fn_state_set(struct devlink_port *port,
> >+			      enum devlink_port_fn_state state,
> >+			      struct netlink_ext_ack *extack)
> >+{
> >+	struct ice_dynamic_port *dyn_port;
> >+
> >+	dyn_port = ice_devlink_port_to_dyn(port);
> >+
> >+	switch (state) {
> >+	case DEVLINK_PORT_FN_STATE_ACTIVE:
> >+		if (!dyn_port->active)
> >+			return ice_activate_dynamic_port(dyn_port, extack);
> >+		break;
> >+	case DEVLINK_PORT_FN_STATE_INACTIVE:
> >+		if (dyn_port->active)
> >+			ice_deactivate_dynamic_port(dyn_port);
> >+		break;
> >+	}
> >+
> >+	return 0;
> >+}
> >+
> >+/**
> >+ * ice_devlink_port_fn_state_get - devlink handler for port state get
> >+ * @port: pointer to devlink port
> >+ * @state: admin configured state of the port
> >+ * @opstate: current port operational state
> >+ * @extack: extack for reporting error messages
> >+ *
> >+ * Gets port state.
> >+ *
> >+ * Return: zero on success or an error code on failure.
> >+ */
> >+static int
> >+ice_devlink_port_fn_state_get(struct devlink_port *port,
> >+			      enum devlink_port_fn_state *state,
> >+			      enum devlink_port_fn_opstate *opstate,
> >+			      struct netlink_ext_ack *extack)
> >+{
> >+	struct ice_dynamic_port *dyn_port;
> >+
> >+	dyn_port = ice_devlink_port_to_dyn(port);
> >+
> >+	if (dyn_port->active) {
> >+		*state = DEVLINK_PORT_FN_STATE_ACTIVE;
> >+		*opstate = DEVLINK_PORT_FN_OPSTATE_ATTACHED;
> 
> Interesting. This means that you don't distinguish between admin state
> and operational state. Meaning, when user does activate, you atomically
> achive the hw attachment and it is ready to go before activation cmd
> returns, correct? I'm just making sure I understand the code.
> 

I am setting the dyn_port->active after the activation heppens, so it is
true, when active is set it is ready to go.

Do you mean that dyn_port->active should be set even before the activation is
finished? I mean when user only call devlink to active the port?

> 
> >+	} else {
> >+		*state = DEVLINK_PORT_FN_STATE_INACTIVE;
> >+		*opstate = DEVLINK_PORT_FN_OPSTATE_DETACHED;
> >+	}
> >+
> >+	return 0;
> >+}
> >+
> >+static const struct devlink_port_ops ice_devlink_port_sf_ops = {
> >+	.port_del = ice_devlink_port_del,
> >+	.port_fn_hw_addr_get = ice_devlink_port_fn_hw_addr_get,
> >+	.port_fn_hw_addr_set = ice_devlink_port_fn_hw_addr_set,
> >+	.port_fn_state_get = ice_devlink_port_fn_state_get,
> >+	.port_fn_state_set = ice_devlink_port_fn_state_set,
> >+};
> >+
> >+/**
> >+ * ice_reserve_sf_num - Reserve a subfunction number for this port
> >+ * @pf: pointer to the pf structure
> >+ * @new_attr: devlink port attributes requested
> >+ * @extack: extack for reporting error messages
> >+ * @sfnum: on success, the sf number reserved
> >+ *
> >+ * Reserve a subfunction number for this port. Only called for
> >+ * DEVLINK_PORT_FLAVOUR_PCI_SF ports.
> >+ *
> >+ * Return: zero on success or an error code on failure.
> >+ */
> >+static int
> >+ice_reserve_sf_num(struct ice_pf *pf,
> >+		   const struct devlink_port_new_attrs *new_attr,
> >+		   struct netlink_ext_ack *extack, u32 *sfnum)
> >+{
> >+	int err;
> >+
> >+	/* If user didn't request an explicit number, pick one */
> >+	if (!new_attr->sfnum_valid)
> >+		return xa_alloc(&pf->sf_nums, sfnum, NULL, xa_limit_32b,
> >+				GFP_KERNEL);
> >+
> >+	/* Otherwise, check and use the number provided */
> >+	err = xa_insert(&pf->sf_nums, new_attr->sfnum, NULL, GFP_KERNEL);
> >+	if (err) {
> >+		if (err == -EBUSY)
> >+			NL_SET_ERR_MSG_MOD(extack, "Subfunction with given sfnum already exists");
> >+		return err;
> >+	}
> >+
> >+	*sfnum = new_attr->sfnum;
> >+
> >+	return 0;
> >+}
> >+
> >+/**
> >+ * ice_devlink_create_sf_port - Register PCI subfunction devlink port
> >+ * @dyn_port: the dynamic port instance structure for this subfunction
> >+ * @sfnum: the subfunction number to use for the port
> >+ *
> >+ * Register PCI subfunction flavour devlink port for a dynamically added
> >+ * subfunction port.
> >+ *
> >+ * Return: zero on success or an error code on failure.
> >+ */
> >+static int
> >+ice_devlink_create_sf_port(struct ice_dynamic_port *dyn_port, u32 sfnum)
> >+{
> >+	struct devlink_port_attrs attrs = {};
> >+	struct devlink_port *devlink_port;
> >+	struct devlink *devlink;
> >+	struct ice_vsi *vsi;
> >+	struct device *dev;
> >+	struct ice_pf *pf;
> >+	int err;
> >+
> >+	vsi = dyn_port->vsi;
> >+	pf = dyn_port->pf;
> >+	dev = ice_pf_to_dev(pf);
> >+
> >+	devlink_port = &dyn_port->devlink_port;
> >+
> >+	attrs.flavour = DEVLINK_PORT_FLAVOUR_PCI_SF;
> >+	attrs.pci_sf.pf = pf->hw.bus.func;
> >+	attrs.pci_sf.sf = sfnum;
> >+
> >+	devlink_port_attrs_set(devlink_port, &attrs);
> >+	devlink = priv_to_devlink(pf);
> >+
> >+	err = devl_port_register_with_ops(devlink, devlink_port, vsi->idx,
> >+					  &ice_devlink_port_sf_ops);
> >+	if (err) {
> >+		dev_err(dev, "Failed to create devlink port for Subfunction %d",
> >+			vsi->idx);
> >+		return err;
> >+	}
> >+
> >+	return 0;
> >+}
> >+
> >+/**
> >+ * ice_alloc_dynamic_port - Allocate new dynamic port
> >+ * @pf: pointer to the pf structure
> >+ * @new_attr: devlink port attributes requested
> >+ * @extack: extack for reporting error messages
> >+ * @devlink_port: index of newly created devlink port
> >+ *
> >+ * Allocate a new dynamic port instance and prepare it for configuration
> >+ * with devlink.
> >+ *
> >+ * Return: zero on success or an error code on failure.
> >+ */
> >+static int
> >+ice_alloc_dynamic_port(struct ice_pf *pf,
> >+		       const struct devlink_port_new_attrs *new_attr,
> >+		       struct netlink_ext_ack *extack,
> >+		       struct devlink_port **devlink_port)
> >+{
> >+	struct ice_dynamic_port *dyn_port;
> >+	struct ice_vsi *vsi;
> >+	u32 sfnum;
> >+	int err;
> >+
> >+	if (new_attr->flavour == DEVLINK_PORT_FLAVOUR_PCI_SF) {
> 
> Pointless check, this is already sanitized in
> ice_devlink_port_new_check_attr()
>

Sorry, probably you pointed this out previously and I forgot to remove
the check. It will be fixed in next version.

> 
> >+		err = ice_reserve_sf_num(pf, new_attr, extack, &sfnum);
> >+		if (err)
> >+			return err;
> >+	}
> >+
> >+	dyn_port = kzalloc(sizeof(*dyn_port), GFP_KERNEL);
> >+	if (!dyn_port) {
> >+		err = -ENOMEM;
> >+		goto unroll_reserve_sf_num;
> >+	}
> >+
> >+	vsi = ice_vsi_alloc(pf);
> >+	if (!vsi) {
> >+		NL_SET_ERR_MSG_MOD(extack, "Unable to allocate VSI");
> >+		err = -ENOMEM;
> >+		goto unroll_dyn_port_alloc;
> >+	}
> >+
> >+	dyn_port->vsi = vsi;
> >+	dyn_port->pf = pf;
> >+	eth_random_addr(dyn_port->hw_addr);
> >+
> >+	err = xa_insert(&pf->dyn_ports, vsi->idx, dyn_port, GFP_KERNEL);
> >+	if (err) {
> >+		NL_SET_ERR_MSG_MOD(extack, "Port index reservation failed");
> >+		goto unroll_vsi_alloc;
> >+	}
> >+
> >+	err = ice_devlink_create_sf_port(dyn_port, sfnum);
> >+	if (err) {
> >+		NL_SET_ERR_MSG_MOD(extack, "Port registration failed");
> >+		goto unroll_xa_insert;
> >+	}
> >+
> >+	*devlink_port = &dyn_port->devlink_port;
> >+
> >+	return 0;
> >+
> >+unroll_xa_insert:
> >+	xa_erase(&pf->dyn_ports, vsi->idx);
> >+unroll_vsi_alloc:
> >+	ice_vsi_free(vsi);
> >+unroll_dyn_port_alloc:
> >+	kfree(dyn_port);
> >+unroll_reserve_sf_num:
> >+	if (new_attr->flavour == DEVLINK_PORT_FLAVOUR_PCI_SF)
> 
> Pointless check, this is already sanitized in
> ice_devlink_port_new_check_attr()
>

Will fix.

> 
> >+		xa_erase(&pf->sf_nums, sfnum);
> >+
> >+	return err;
> >+}
> >+
> >+/**
> >+ * ice_devlink_port_new - devlink handler for the new port
> >+ * @devlink: pointer to devlink
> >+ * @new_attr: pointer to the port new attributes
> >+ * @extack: extack for reporting error messages
> >+ * @devlink_port: pointer to a new port
> >+ *
> >+ * Creates new devlink port, checks new port attributes and reject
> >+ * any unsupported parameters, allocates new subfunction for that port.
> >+ *
> >+ * Return: zero on success or an error code on failure.
> >+ */
> >+int
> >+ice_devlink_port_new(struct devlink *devlink,
> >+		     const struct devlink_port_new_attrs *new_attr,
> >+		     struct netlink_ext_ack *extack,
> >+		     struct devlink_port **devlink_port)
> >+{
> >+	struct ice_pf *pf = devlink_priv(devlink);
> >+	int err;
> >+
> >+	err = ice_devlink_port_new_check_attr(pf, new_attr, extack);
> >+	if (err)
> >+		return err;
> >+
> >+	return ice_alloc_dynamic_port(pf, new_attr, extack, devlink_port);
> >+}
> >diff --git a/drivers/net/ethernet/intel/ice/devlink/devlink_port.h b/drivers/net/ethernet/intel/ice/devlink/devlink_port.h
> >index 9223bcdb6444..30146fef64b9 100644
> >--- a/drivers/net/ethernet/intel/ice/devlink/devlink_port.h
> >+++ b/drivers/net/ethernet/intel/ice/devlink/devlink_port.h
> >@@ -4,9 +4,39 @@
> > #ifndef _DEVLINK_PORT_H_
> > #define _DEVLINK_PORT_H_
> > 
> >+#include "../ice.h"
> >+
> >+/**
> >+ * struct ice_dynamic_port - Track dynamically added devlink port instance
> >+ * @hw_addr: the HW address for this port
> >+ * @active: true if the port has been activated
> >+ * @devlink_port: the associated devlink port structure
> >+ * @pf: pointer to the PF private structure
> >+ * @vsi: the VSI associated with this port
> >+ *
> >+ * An instance of a dynamically added devlink port. Each port flavour
> >+ */
> >+struct ice_dynamic_port {
> >+	u8 hw_addr[ETH_ALEN];
> >+	u8 active : 1;
> 
> Hmm, odd whitespace to my eye. Shouldn't this be:
> 	u8 active: 1;
> ?

Agree, will fix.

> 
> 
> >+	struct devlink_port devlink_port;
> >+	struct ice_pf *pf;
> >+	struct ice_vsi *vsi;
> >+};
> >+
> >+void ice_dealloc_all_dynamic_ports(struct ice_pf *pf);
> >+
> > int ice_devlink_create_pf_port(struct ice_pf *pf);
> > void ice_devlink_destroy_pf_port(struct ice_pf *pf);
> > int ice_devlink_create_vf_port(struct ice_vf *vf);
> > void ice_devlink_destroy_vf_port(struct ice_vf *vf);
> > 
> >+#define ice_devlink_port_to_dyn(p) \
> >+	container_of(port, struct ice_dynamic_port, devlink_port)
> >+
> >+int
> >+ice_devlink_port_new(struct devlink *devlink,
> >+		     const struct devlink_port_new_attrs *new_attr,
> >+		     struct netlink_ext_ack *extack,
> >+		     struct devlink_port **devlink_port);
> > #endif /* _DEVLINK_PORT_H_ */
> >diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
> >index 5f7757a44b72..edc93d14464c 100644
> >--- a/drivers/net/ethernet/intel/ice/ice.h
> >+++ b/drivers/net/ethernet/intel/ice/ice.h
> >@@ -649,6 +649,9 @@ struct ice_pf {
> > 	struct ice_eswitch eswitch;
> > 	struct ice_esw_br_port *br_port;
> > 
> >+	struct xarray dyn_ports;
> >+	struct xarray sf_nums;
> >+
> > #define ICE_INVALID_AGG_NODE_ID		0
> > #define ICE_PF_AGG_NODE_ID_START	1
> > #define ICE_MAX_PF_AGG_NODES		32
> >@@ -905,6 +908,7 @@ int ice_vsi_open(struct ice_vsi *vsi);
> > void ice_set_ethtool_ops(struct net_device *netdev);
> > void ice_set_ethtool_repr_ops(struct net_device *netdev);
> > void ice_set_ethtool_safe_mode_ops(struct net_device *netdev);
> >+void ice_set_ethtool_sf_ops(struct net_device *netdev);
> > u16 ice_get_avail_txq_count(struct ice_pf *pf);
> > u16 ice_get_avail_rxq_count(struct ice_pf *pf);
> > int ice_vsi_recfg_qs(struct ice_vsi *vsi, int new_rx, int new_tx, bool locked);
> >diff --git a/drivers/net/ethernet/intel/ice/ice_lib.c b/drivers/net/ethernet/intel/ice/ice_lib.c
> >index cff0bb6ba428..3e5c0651534b 100644
> >--- a/drivers/net/ethernet/intel/ice/ice_lib.c
> >+++ b/drivers/net/ethernet/intel/ice/ice_lib.c
> >@@ -7,6 +7,7 @@
> > #include "ice_lib.h"
> > #include "ice_fltr.h"
> > #include "ice_dcb_lib.h"
> >+#include "ice_type.h"
> > #include "ice_vsi_vlan_ops.h"
> > 
> > /**
> >@@ -440,7 +441,7 @@ static int ice_vsi_alloc_ring_stats(struct ice_vsi *vsi)
> >  * This deallocates the VSI's queue resources, removes it from the PF's
> >  * VSI array if necessary, and deallocates the VSI
> >  */
> >-static void ice_vsi_free(struct ice_vsi *vsi)
> >+void ice_vsi_free(struct ice_vsi *vsi)
> > {
> > 	struct ice_pf *pf = NULL;
> > 	struct device *dev;
> >@@ -612,7 +613,7 @@ ice_vsi_alloc_def(struct ice_vsi *vsi, struct ice_channel *ch)
> >  *
> >  * returns a pointer to a VSI on success, NULL on failure.
> >  */
> >-static struct ice_vsi *ice_vsi_alloc(struct ice_pf *pf)
> >+struct ice_vsi *ice_vsi_alloc(struct ice_pf *pf)
> > {
> > 	struct device *dev = ice_pf_to_dev(pf);
> > 	struct ice_vsi *vsi = NULL;
> >diff --git a/drivers/net/ethernet/intel/ice/ice_lib.h b/drivers/net/ethernet/intel/ice/ice_lib.h
> >index a57213062b7f..198cfd1fdca0 100644
> >--- a/drivers/net/ethernet/intel/ice/ice_lib.h
> >+++ b/drivers/net/ethernet/intel/ice/ice_lib.h
> >@@ -103,6 +103,8 @@ void ice_dis_vsi(struct ice_vsi *vsi, bool locked);
> > 
> > int ice_vsi_rebuild(struct ice_vsi *vsi, u32 vsi_flags);
> > int ice_vsi_cfg(struct ice_vsi *vsi, struct ice_vsi_cfg_params *params);
> >+struct ice_vsi *ice_vsi_alloc(struct ice_pf *pf);
> >+void ice_vsi_free(struct ice_vsi *vsi);
> > 
> > bool ice_is_reset_in_progress(unsigned long *state);
> > int ice_wait_for_reset(struct ice_pf *pf, unsigned long timeout);
> >diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
> >index 058d2a8836b0..29552598ddb6 100644
> >--- a/drivers/net/ethernet/intel/ice/ice_main.c
> >+++ b/drivers/net/ethernet/intel/ice/ice_main.c
> >@@ -3964,6 +3964,9 @@ static void ice_deinit_pf(struct ice_pf *pf)
> > 
> > 	if (pf->ptp.clock)
> > 		ptp_clock_unregister(pf->ptp.clock);
> >+
> >+	xa_destroy(&pf->dyn_ports);
> >+	xa_destroy(&pf->sf_nums);
> > }
> > 
> > /**
> >@@ -4057,6 +4060,9 @@ static int ice_init_pf(struct ice_pf *pf)
> > 	hash_init(pf->vfs.table);
> > 	ice_mbx_init_snapshot(&pf->hw);
> > 
> >+	xa_init(&pf->dyn_ports);
> >+	xa_init(&pf->sf_nums);
> >+
> > 	return 0;
> > }
> > 
> >@@ -5376,6 +5382,7 @@ static void ice_remove(struct pci_dev *pdev)
> > 		ice_remove_arfs(pf);
> > 
> > 	devl_lock(priv_to_devlink(pf));
> >+	ice_dealloc_all_dynamic_ports(pf);
> > 	ice_deinit_devlink(pf);
> > 
> > 	ice_unload(pf);
> >@@ -6670,7 +6677,8 @@ static int ice_up_complete(struct ice_vsi *vsi)
> > 
> > 	if (vsi->port_info &&
> > 	    (vsi->port_info->phy.link_info.link_info & ICE_AQ_LINK_UP) &&
> >-	    vsi->netdev && vsi->type == ICE_VSI_PF) {
> >+	    ((vsi->netdev && vsi->type == ICE_VSI_PF) ||
> >+	     (vsi->netdev && vsi->type == ICE_VSI_SF))) {
> > 		ice_print_link_msg(vsi, true);
> > 		netif_tx_start_all_queues(vsi->netdev);
> > 		netif_carrier_on(vsi->netdev);
> >@@ -7368,7 +7376,7 @@ int ice_vsi_open(struct ice_vsi *vsi)
> > 
> > 	ice_vsi_cfg_netdev_tc(vsi, vsi->tc_cfg.ena_tc);
> > 
> >-	if (vsi->type == ICE_VSI_PF) {
> >+	if (vsi->type == ICE_VSI_PF || vsi->type == ICE_VSI_SF) {
> > 		/* Notify the stack of the actual queue counts. */
> > 		err = netif_set_real_num_tx_queues(vsi->netdev, vsi->num_txq);
> > 		if (err)
> 
> These 2 last hunks seem somewhat disconnected from the rest of the
> patch. Could that be a separate patch perhaps?
>

Ok, will split it.

Thanks for carefully review,
Michal

> 
> >-- 
> >2.42.0
> >
> >

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