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fcoe: Use default VLAN for FIP VLAN discovery

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FC-BB-6 states: FIP protocols shall be performed on a per-VLAN basis. It
is recommended to use the FIP VLAN discovery protocol on the default
VLAN.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Acked-by: Johannes Thumshirn <jth@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke 2016-07-04 10:29:23 +02:00 committed by Martin K. Petersen
parent b195d5e2bf
commit d242e6680e
2 changed files with 49 additions and 1 deletions
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49
drivers/scsi/fcoe/fcoe.c
View File

@ -92,6 +92,8 @@ static struct fcoe_interface
static int fcoe_fip_recv(struct sk_buff *, struct net_device *,
struct packet_type *, struct net_device *);
static int fcoe_fip_vlan_recv(struct sk_buff *, struct net_device *,
struct packet_type *, struct net_device *);
static void fcoe_fip_send(struct fcoe_ctlr *, struct sk_buff *);
static void fcoe_update_src_mac(struct fc_lport *, u8 *);
@ -363,6 +365,12 @@ static int fcoe_interface_setup(struct fcoe_interface *fcoe,
fcoe->fip_packet_type.dev = netdev;
dev_add_pack(&fcoe->fip_packet_type);
if (netdev != real_dev) {
fcoe->fip_vlan_packet_type.func = fcoe_fip_vlan_recv;
fcoe->fip_vlan_packet_type.type = htons(ETH_P_FIP);
fcoe->fip_vlan_packet_type.dev = real_dev;
dev_add_pack(&fcoe->fip_vlan_packet_type);
}
return 0;
}
@ -450,6 +458,8 @@ static void fcoe_interface_remove(struct fcoe_interface *fcoe)
*/
__dev_remove_pack(&fcoe->fcoe_packet_type);
__dev_remove_pack(&fcoe->fip_packet_type);
if (netdev != fcoe->realdev)
__dev_remove_pack(&fcoe->fip_vlan_packet_type);
synchronize_net();
/* Delete secondary MAC addresses */
@ -519,6 +529,29 @@ static int fcoe_fip_recv(struct sk_buff *skb, struct net_device *netdev,
return 0;
}
/**
* fcoe_fip_vlan_recv() - Handler for received FIP VLAN discovery frames
* @skb: The receive skb
* @netdev: The associated net device
* @ptype: The packet_type structure which was used to register this handler
* @orig_dev: The original net_device the the skb was received on.
* (in case dev is a bond)
*
* Returns: 0 for success
*/
static int fcoe_fip_vlan_recv(struct sk_buff *skb, struct net_device *netdev,
struct packet_type *ptype,
struct net_device *orig_dev)
{
struct fcoe_interface *fcoe;
struct fcoe_ctlr *ctlr;
fcoe = container_of(ptype, struct fcoe_interface, fip_vlan_packet_type);
ctlr = fcoe_to_ctlr(fcoe);
fcoe_ctlr_recv(ctlr, skb);
return 0;
}
/**
* fcoe_port_send() - Send an Ethernet-encapsulated FIP/FCoE frame
* @port: The FCoE port
@ -539,7 +572,21 @@ static void fcoe_port_send(struct fcoe_port *port, struct sk_buff *skb)
*/
static void fcoe_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb)
{
skb->dev = fcoe_from_ctlr(fip)->netdev;
struct fcoe_interface *fcoe = fcoe_from_ctlr(fip);
struct fip_frame {
struct ethhdr eth;
struct fip_header fip;
} __packed *frame;
/*
* Use default VLAN for FIP VLAN discovery protocol
*/
frame = (struct fip_frame *)skb->data;
if (frame->fip.fip_op == ntohs(FIP_OP_VLAN) &&
fcoe->realdev != fcoe->netdev)
skb->dev = fcoe->realdev;
else
skb->dev = fcoe->netdev;
fcoe_port_send(lport_priv(fip->lp), skb);
}

1
drivers/scsi/fcoe/fcoe.h
View File

@ -80,6 +80,7 @@ struct fcoe_interface {
struct net_device *realdev;
struct packet_type fcoe_packet_type;
struct packet_type fip_packet_type;
struct packet_type fip_vlan_packet_type;
struct fc_exch_mgr *oem;
u8 removed;
u8 priority;