[Intel-wired-lan] [PATCH net-next v1] iavf: Add waiting for response from PF in set mac

[Nguyen, Anthony L <anthony.l.nguyen@intel.com>]

On Mon, 2022-01-24 at 16:45 +0100, Mateusz Palczewski wrote:
> 
<snip>

> +enum iavf_critical_section_t {
> +???????__IAVF_IN_CRITICAL_TASK?????????/* cannot be interrupted */
> +};

This was removed by maintainer request. Please don't re-add it. Use the
crit_lock.

> ?#define IAVF_CLOUD_FIELD_OMAC??????????0x01
> ?#define IAVF_CLOUD_FIELD_IMAC??????????0x02
> ?#define IAVF_CLOUD_FIELD_IVLAN?0x04
> @@ -240,6 +245,7 @@ struct iavf_adapter {
> ????????struct work_struct adminq_task;
> ????????struct delayed_work client_task;
> ????????wait_queue_head_t down_waitqueue;
> +???????wait_queue_head_t vc_waitqueue;
> ????????struct iavf_q_vector *q_vectors;
> ????????struct list_head vlan_filter_list;
> ????????struct list_head mac_filter_list;
> @@ -283,6 +289,7 @@ struct iavf_adapter {
> ?#define IAVF_FLAG_LEGACY_RX????????????????????BIT(15)
> ?#define IAVF_FLAG_REINIT_ITR_NEEDED????????????BIT(16)
> ?#define IAVF_FLAG_QUEUES_DISABLED??????????????BIT(17)
> +#define IAVF_FLAG_INITIAL_MAC_SET??????????????BIT(23)
> ?/* duplicates for common code */
> ?#define IAVF_FLAG_DCB_ENABLED??????????????????0
> ????????/* flags for admin queue service task */
> @@ -550,6 +557,8 @@ void iavf_enable_vlan_stripping_v2(struct
> iavf_adapter *adapter, u16 tpid);
> ?void iavf_disable_vlan_stripping_v2(struct iavf_adapter *adapter,
> u16 tpid);
> ?void iavf_enable_vlan_insertion_v2(struct iavf_adapter *adapter, u16
> tpid);
> ?void iavf_disable_vlan_insertion_v2(struct iavf_adapter *adapter,
> u16 tpid);
> +int iavf_replace_primary_mac(struct iavf_adapter *adapter,
> +??????????????????????????? const u8 *new_mac);
> ?void
> ?iavf_set_vlan_offload_features(struct iavf_adapter *adapter,
> ?????????????????????????????? netdev_features_t prev_features,
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c
> b/drivers/net/ethernet/intel/iavf/iavf_main.c
> index a4c12a3..c816ecb 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_main.c
> +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
> @@ -873,6 +873,7 @@ struct iavf_mac_filter *iavf_add_filter(struct
> iavf_adapter *adapter,
> ?
> ????????????????list_add_tail(&f->list, &adapter->mac_filter_list);
> ????????????????f->add = true;
> +???????????????f->add_handled = false;
> ????????????????f->is_new_mac = true;
> ????????????????f->is_primary = false;
> ????????????????adapter->aq_required |= IAVF_FLAG_AQ_ADD_MAC_FILTER;
> @@ -884,47 +885,128 @@ struct iavf_mac_filter *iavf_add_filter(struct
> iavf_adapter *adapter,
> ?}
> ?
> ?/**
> - * iavf_set_mac - NDO callback to set port mac address
> - * @netdev: network interface device structure
> - * @p: pointer to an address structure
> + * iavf_replace_primary_mac - Replace current primary address
> + * @adapter: board private structure
> + * @new_mac: new mac address to be applied
> ? *
> - * Returns 0 on success, negative on failure
> + * Replace current dev_addr and send request to PF for removal of
> previous
> + * primary mac address filter and addition of new primary mac
> filter.
> + * Return 0 for success, -ENOMEM for failure.
> + *
> + * Do not call this with mac_vlan_list_lock!
> ? **/
> -static int iavf_set_mac(struct net_device *netdev, void *p)
> +int iavf_replace_primary_mac(struct iavf_adapter *adapter,
> +??????????????????????????? const u8 *new_mac)
> ?{
> -???????struct iavf_adapter *adapter = netdev_priv(netdev);
> ????????struct iavf_hw *hw = &adapter->hw;
> ????????struct iavf_mac_filter *f;
> -???????struct sockaddr *addr = p;
> -
> -???????if (!is_valid_ether_addr(addr->sa_data))
> -???????????????return -EADDRNOTAVAIL;
> -
> -???????if (ether_addr_equal(netdev->dev_addr, addr->sa_data))
> -???????????????return 0;
> ?
> ????????spin_lock_bh(&adapter->mac_vlan_list_lock);
> ?
> +???????list_for_each_entry(f, &adapter->mac_filter_list, list) {
> +???????????????f->is_primary = false;
> +???????}
> +
> ????????f = iavf_find_filter(adapter, hw->mac.addr);
> ????????if (f) {
> ????????????????f->remove = true;
> -???????????????f->is_primary = true;
> ????????????????adapter->aq_required |= IAVF_FLAG_AQ_DEL_MAC_FILTER;