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Commit ab6b85c1 authored by Vasu Dev's avatar Vasu Dev Committed by David S. Miller
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fcoe: consolidates netdev related config and cleanup for spma mode 



Currently fcoe_netdev_config adds netdev pkt handler for fcoe pkts,
fcoe_if_create adds netdev pkt handler for fip packets, a secondary
MAC address is added by fcoe_netdev_config and then later cleanup
for these netdev related config/adds is done only during
fcoe_if_destroy and no cleanup done on error during fcoe interface
creation after above netdev config calling in fcoe_if_create.

So this patch adds single func for above mentioned cleanup the
fcoe_netdev_cleanup and then calls this func on either fcoe interface
destroy or exiting from fcoe_if_create due to an error after fcoe/fip
related above netdev config is done.

Moved netdev pkt handler addition code blocks for fip pkts close to
similar code block for foce pkt in fcoe_netdev_config, so that added
fcoe_netdev_cleanup could be called on error from fcoe_netdev_config
to undo these both additions for fcoe/fip pkt handlers. This move
required reference to fcoe_fip_recv in fcoe_netdev_config, so moved
fip related functions fcoe_fip_recv, fcoe_fip_send and
fcoe_update_src_mac above fcoe_netdev_config.

This consolidation will enable spma mode support in next patch to
easily add or delete spma mode mac address beside fixing current
no cleanup issue during error.

Signed-off-by: default avatarVasu Dev <vasu.dev@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent aca6bee7

drivers/scsi/fcoe/fcoe.c

+94 −79
Original line number Diff line number Diff line
@@ -135,6 +135,58 @@ static struct scsi_host_template fcoe_shost_template = { 
	.max_sectors = 0xffff,

};



/**

 * fcoe_fip_recv - handle a received FIP frame.

 * @skb: the receive skb

 * @dev: associated &net_device

 * @ptype: the &packet_type structure which was used to register this handler.

 * @orig_dev: original receive &net_device, in case @dev is a bond.

 *

 * Returns: 0 for success

 */

static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *dev,

			 struct packet_type *ptype,

			 struct net_device *orig_dev)

{

	struct fcoe_softc *fc;



	fc = container_of(ptype, struct fcoe_softc, fip_packet_type);

	fcoe_ctlr_recv(&fc->ctlr, skb);

	return 0;

}



/**

 * fcoe_fip_send() - send an Ethernet-encapsulated FIP frame.

 * @fip: FCoE controller.

 * @skb: FIP Packet.

 */

static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)

{

	skb->dev = fcoe_from_ctlr(fip)->real_dev;

	dev_queue_xmit(skb);

}



/**

 * fcoe_update_src_mac() - Update Ethernet MAC filters.

 * @fip: FCoE controller.

 * @old: Unicast MAC address to delete if the MAC is non-zero.

 * @new: Unicast MAC address to add.

 *

 * Remove any previously-set unicast MAC filter.

 * Add secondary FCoE MAC address filter for our OUI.

 */

static void fcoe_update_src_mac(struct fcoe_ctlr *fip, u8 *old, u8 *new)

{

	struct fcoe_softc *fc;



	fc = fcoe_from_ctlr(fip);

	rtnl_lock();

	if (!is_zero_ether_addr(old))

		dev_unicast_delete(fc->real_dev, old, ETH_ALEN);

	dev_unicast_add(fc->real_dev, new, ETH_ALEN);

	rtnl_unlock();

}



/**

 * fcoe_lport_config() - sets up the fc_lport

 * @lp: ptr to the fc_lport
@@ -167,6 +219,29 @@ static int fcoe_lport_config(struct fc_lport *lp) 
	return 0;

}



/**

 * fcoe_netdev_cleanup() - clean up netdev configurations

 * @fc: ptr to the fcoe_softc

 */

void fcoe_netdev_cleanup(struct fcoe_softc *fc)

{

	u8 flogi_maddr[ETH_ALEN];



	/* Don't listen for Ethernet packets anymore */

	dev_remove_pack(&fc->fcoe_packet_type);

	dev_remove_pack(&fc->fip_packet_type);



	/* Delete secondary MAC addresses */

	rtnl_lock();

	memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN);

	dev_unicast_delete(fc->real_dev, flogi_maddr, ETH_ALEN);

	if (!is_zero_ether_addr(fc->ctlr.data_src_addr))

		dev_unicast_delete(fc->real_dev,

				   fc->ctlr.data_src_addr, ETH_ALEN);

	dev_mc_delete(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0);

	rtnl_unlock();

}



/**

 * fcoe_netdev_config() - Set up netdev for SW FCoE

 * @lp : ptr to the fc_lport
@@ -267,6 +342,11 @@ static int fcoe_netdev_config(struct fc_lport *lp, struct net_device *netdev) 
	fc->fcoe_packet_type.dev = fc->real_dev;

	dev_add_pack(&fc->fcoe_packet_type);



	fc->fip_packet_type.func = fcoe_fip_recv;

	fc->fip_packet_type.type = htons(ETH_P_FIP);

	fc->fip_packet_type.dev = fc->real_dev;

	dev_add_pack(&fc->fip_packet_type);



	return 0;

}
@@ -334,7 +414,6 @@ static int fcoe_if_destroy(struct net_device *netdev) 
{

	struct fc_lport *lp = NULL;

	struct fcoe_softc *fc;

	u8 flogi_maddr[ETH_ALEN];



	BUG_ON(!netdev);
@@ -353,9 +432,10 @@ static int fcoe_if_destroy(struct net_device *netdev) 
	/* Remove the instance from fcoe's list */

	fcoe_hostlist_remove(lp);



	/* Don't listen for Ethernet packets anymore */

	dev_remove_pack(&fc->fcoe_packet_type);

	dev_remove_pack(&fc->fip_packet_type);

	/* clean up netdev configurations */

	fcoe_netdev_cleanup(fc);



	/* tear-down the FCoE controller */

	fcoe_ctlr_destroy(&fc->ctlr);



	/* Cleanup the fc_lport */
@@ -370,16 +450,6 @@ static int fcoe_if_destroy(struct net_device *netdev) 
	if (lp->emp)

		fc_exch_mgr_free(lp->emp);



	/* Delete secondary MAC addresses */

	rtnl_lock();

	memcpy(flogi_maddr, (u8[6]) FC_FCOE_FLOGI_MAC, ETH_ALEN);

	dev_unicast_delete(fc->real_dev, flogi_maddr, ETH_ALEN);

	if (!is_zero_ether_addr(fc->ctlr.data_src_addr))

		dev_unicast_delete(fc->real_dev,

				   fc->ctlr.data_src_addr, ETH_ALEN);

	dev_mc_delete(fc->real_dev, FIP_ALL_ENODE_MACS, ETH_ALEN, 0);

	rtnl_unlock();



	/* Free the per-CPU revieve threads */

	fcoe_percpu_clean(lp);
@@ -438,58 +508,6 @@ static struct libfc_function_template fcoe_libfc_fcn_templ = { 
	.ddp_done = fcoe_ddp_done,

};



/**

 * fcoe_fip_recv - handle a received FIP frame.

 * @skb: the receive skb

 * @dev: associated &net_device

 * @ptype: the &packet_type structure which was used to register this handler.

 * @orig_dev: original receive &net_device, in case @dev is a bond.

 *

 * Returns: 0 for success

 */

static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *dev,

			 struct packet_type *ptype,

			 struct net_device *orig_dev)

{

	struct fcoe_softc *fc;



	fc = container_of(ptype, struct fcoe_softc, fip_packet_type);

	fcoe_ctlr_recv(&fc->ctlr, skb);

	return 0;

}



/**

 * fcoe_fip_send() - send an Ethernet-encapsulated FIP frame.

 * @fip: FCoE controller.

 * @skb: FIP Packet.

 */

static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)

{

	skb->dev = fcoe_from_ctlr(fip)->real_dev;

	dev_queue_xmit(skb);

}



/**

 * fcoe_update_src_mac() - Update Ethernet MAC filters.

 * @fip: FCoE controller.

 * @old: Unicast MAC address to delete if the MAC is non-zero.

 * @new: Unicast MAC address to add.

 *

 * Remove any previously-set unicast MAC filter.

 * Add secondary FCoE MAC address filter for our OUI.

 */

static void fcoe_update_src_mac(struct fcoe_ctlr *fip, u8 *old, u8 *new)

{

	struct fcoe_softc *fc;



	fc = fcoe_from_ctlr(fip);

	rtnl_lock();

	if (!is_zero_ether_addr(old))

		dev_unicast_delete(fc->real_dev, old, ETH_ALEN);

	dev_unicast_add(fc->real_dev, new, ETH_ALEN);

	rtnl_unlock();

}



/**

 * fcoe_if_create() - this function creates the fcoe interface

 * @netdev: pointer the associated netdevice
@@ -531,13 +549,6 @@ static int fcoe_if_create(struct net_device *netdev) 
		goto out_host_put;

	}



	/* configure lport network properties */

	rc = fcoe_netdev_config(lp, netdev);

	if (rc) {

		FC_DBG("Could not configure netdev for lport\n");

		goto out_host_put;

	}



	/*

	 * Initialize FIP.

	 */
@@ -545,23 +556,25 @@ static int fcoe_if_create(struct net_device *netdev) 
	fc->ctlr.send = fcoe_fip_send;

	fc->ctlr.update_mac = fcoe_update_src_mac;



	fc->fip_packet_type.func = fcoe_fip_recv;

	fc->fip_packet_type.type = htons(ETH_P_FIP);

	fc->fip_packet_type.dev = fc->real_dev;

	dev_add_pack(&fc->fip_packet_type);

	/* configure lport network properties */

	rc = fcoe_netdev_config(lp, netdev);

	if (rc) {

		FC_DBG("Could not configure netdev for the interface\n");

		goto out_netdev_cleanup;

	}



	/* configure lport scsi host properties */

	rc = fcoe_shost_config(lp, shost, &netdev->dev);

	if (rc) {

		FC_DBG("Could not configure shost for lport\n");

		goto out_host_put;

		goto out_netdev_cleanup;

	}



	/* lport exch manager allocation */

	rc = fcoe_em_config(lp);

	if (rc) {

		FC_DBG("Could not configure em for lport\n");

		goto out_host_put;

		goto out_netdev_cleanup;

	}



	/* Initialize the library */
@@ -587,6 +600,8 @@ static int fcoe_if_create(struct net_device *netdev) 


out_lp_destroy:

	fc_exch_mgr_free(lp->emp); /* Free the EM */

out_netdev_cleanup:

	fcoe_netdev_cleanup(fc);

out_host_put:

	scsi_host_put(lp->host);

	return rc;