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Subject[PATCH] fcoe: provide translation table between Ethernet and FC port speeds
Date
Provide a translation table between Ethernet and FC port speeds so odd
speeds (from a Ethernet POV) like 8 Gbit are correctly mapped to sysfs
and open-fcoe's fcoeadm.

Before:
Description: BCM57840 NetXtreme II 10/20-Gigabit Ethernet
Revision: 11
Manufacturer: Broadcom Corporation
Serial Number: 6CC2173EA1D0

Driver: bnx2x 1.712.30-0
Number of Ports: 1

Symbolic Name: bnx2fc (QLogic BCM57840) v2.10.3 over eth2
OS Device Name: host1
Node Name: 0x20006cc2173ea1d1
Port Name: 0x10006cc2173ea1d1
FabricName: 0x100000c0dd0ce717
Speed: unknown
Supported Speed: 1 Gbit, 10 Gbit
MaxFrameSize: 2048 bytes
FC-ID (Port ID): 0x660702
State: Online

After:
Description: BCM57840 NetXtreme II 10/20-Gigabit Ethernet
Revision: 11
Manufacturer: Broadcom Corporation
Serial Number: 6CC2173EA1D0

Driver: bnx2x 1.712.30-0
Number of Ports: 1

Symbolic Name: bnx2fc (QLogic BCM57840) v2.10.3 over eth2
OS Device Name: host1
Node Name: 0x20006cc2173ea1d1
Port Name: 0x10006cc2173ea1d1
FabricName: 0x100000c0dd0ce717
Speed: 8 Gbit
Supported Speed: 1 Gbit, 10 Gbit
MaxFrameSize: 2048 bytes
FC-ID (Port ID): 0x660701
State: Online

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
---
drivers/scsi/fcoe/fcoe_transport.c | 48 ++++++++++++++++++++++++--------------
1 file changed, 31 insertions(+), 17 deletions(-)

diff --git a/drivers/scsi/fcoe/fcoe_transport.c b/drivers/scsi/fcoe/fcoe_transport.c
index 7028dd3..3e7f0e7 100644
--- a/drivers/scsi/fcoe/fcoe_transport.c
+++ b/drivers/scsi/fcoe/fcoe_transport.c
@@ -83,6 +83,36 @@ static struct notifier_block libfcoe_notifier = {
.notifier_call = libfcoe_device_notification,
};

+static const struct {
+ u32 fc_port_speed;
+ u32 eth_port_speed;
+} fcoe_port_speed_mapping[] = {
+ { FC_PORTSPEED_1GBIT, SPEED_1000 },
+ { FC_PORTSPEED_2GBIT, 2000 },
+ { FC_PORTSPEED_4GBIT, 4000 },
+ { FC_PORTSPEED_8GBIT, 8000 },
+ { FC_PORTSPEED_10GBIT, SPEED_10000 },
+ { FC_PORTSPEED_16GBIT, 16000 },
+ { FC_PORTSPEED_20GBIT, SPEED_20000 },
+ { FC_PORTSPEED_25GBIT, SPEED_25000 },
+ { FC_PORTSPEED_32GBIT, 32000 },
+ { FC_PORTSPEED_40GBIT, SPEED_40000 },
+ { FC_PORTSPEED_50GBIT, SPEED_50000 },
+ { FC_PORTSPEED_100GBIT, SPEED_100000 },
+};
+
+static inline u32 eth2fc_speed(u32 eth_port_speed)
+{
+ int i;
+
+ for (i = 0; i <= ARRAY_SIZE(fcoe_port_speed_mapping); i++) {
+ if (fcoe_port_speed_mapping[i].eth_port_speed == eth_port_speed)
+ return fcoe_port_speed_mapping[i].fc_port_speed;
+ }
+
+ return FC_PORTSPEED_UNKNOWN;
+}
+
/**
* fcoe_link_speed_update() - Update the supported and actual link speeds
* @lport: The local port to update speeds for
@@ -126,23 +156,7 @@ int fcoe_link_speed_update(struct fc_lport *lport)
SUPPORTED_40000baseLR4_Full))
lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;

- switch (ecmd.base.speed) {
- case SPEED_1000:
- lport->link_speed = FC_PORTSPEED_1GBIT;
- break;
- case SPEED_10000:
- lport->link_speed = FC_PORTSPEED_10GBIT;
- break;
- case SPEED_20000:
- lport->link_speed = FC_PORTSPEED_20GBIT;
- break;
- case SPEED_40000:
- lport->link_speed = FC_PORTSPEED_40GBIT;
- break;
- default:
- lport->link_speed = FC_PORTSPEED_UNKNOWN;
- break;
- }
+ lport->link_speed = eth2fc_speed(ecmd.base.speed);
return 0;
}
return -1;
--
1.8.5.6
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