netdev - Re: [PATCH net-next v9 2/4] net: Introduce generic failover module

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Message-ID: <20180502161542.GI19250@nanopsycho>
Date:   Wed, 2 May 2018 18:15:42 +0200
From:   Jiri Pirko <jiri@...nulli.us>
To:     Sridhar Samudrala <sridhar.samudrala@...el.com>
Cc:     mst@...hat.com, stephen@...workplumber.org, davem@...emloft.net,
        netdev@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        virtio-dev@...ts.oasis-open.org, jesse.brandeburg@...el.com,
        alexander.h.duyck@...el.com, kubakici@...pl, jasowang@...hat.com,
        loseweigh@...il.com, aaron.f.brown@...el.com
Subject: Re: [PATCH net-next v9 2/4] net: Introduce generic failover module

Sat, Apr 28, 2018 at 11:06:01AM CEST, jiri@...nulli.us wrote:
>Fri, Apr 27, 2018 at 07:06:58PM CEST, sridhar.samudrala@...el.com wrote:

[...]


>>+
>>+	err = netdev_rx_handler_register(slave_dev, net_failover_handle_frame,
>>+					 failover_dev);
>>+	if (err) {
>>+		netdev_err(slave_dev, "can not register failover rx handler (err = %d)\n",
>>+			   err);
>>+		goto err_handler_register;
>>+	}
>>+
>>+	err = netdev_upper_dev_link(slave_dev, failover_dev, NULL);
>
>Please use netdev_master_upper_dev_link().

Don't forget to fillup struct netdev_lag_upper_info - NETDEV_LAG_TX_TYPE_ACTIVEBACKUP


Also, please call netdev_lower_state_changed() when the active slave
device changes from primary->backup of backup->primary and whenever link
state of a slave changes

[...]