diff options
author | Yi Zou <yi.zou@intel.com> | 2009-08-31 12:34:28 (GMT) |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2009-09-01 08:24:40 (GMT) |
commit | 6ee1652051f14d1c110f48a5b3ee037d63d0c2fa (patch) | |
tree | 2abd6fcb4eddfb093f5d46a0faa9e601e38f6cb7 /drivers/net/ixgbe/ixgbe_fcoe.c | |
parent | 579496865cf4ea429146382d62047ffdbaab0dee (diff) | |
download | linux-fsl-qoriq-6ee1652051f14d1c110f48a5b3ee037d63d0c2fa.tar.xz |
ixgbe: Add support for dcbnl_rtnl_ops.setapp/getapp
Add support for dcbnl_rtnl_ops.setapp/getapp to set or get the current user
priority bitmap for the given application protocol. Currently, 82599 only
supports setapp/getapp for Fiber Channel over Ethernet (FCoE) protocol.
Signed-off-by: Yi Zou <yi.zou@intel.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ixgbe/ixgbe_fcoe.c')
-rw-r--r-- | drivers/net/ixgbe/ixgbe_fcoe.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/drivers/net/ixgbe/ixgbe_fcoe.c b/drivers/net/ixgbe/ixgbe_fcoe.c index 26fe46f..0607cff 100644 --- a/drivers/net/ixgbe/ixgbe_fcoe.c +++ b/drivers/net/ixgbe/ixgbe_fcoe.c @@ -27,6 +27,9 @@ #include "ixgbe.h" +#ifdef CONFIG_IXGBE_DCB +#include "ixgbe_dcb_82599.h" +#endif /* CONFIG_IXGBE_DCB */ #include <linux/if_ether.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_device.h> @@ -648,3 +651,64 @@ int ixgbe_fcoe_disable(struct net_device *netdev) out_disable: return rc; } + +#ifdef CONFIG_IXGBE_DCB +/** + * ixgbe_fcoe_getapp - retrieves current user priority bitmap for FCoE + * @adapter : ixgbe adapter + * + * Finds out the corresponding user priority bitmap from the current + * traffic class that FCoE belongs to. Returns 0 as the invalid user + * priority bitmap to indicate an error. + * + * Returns : 802.1p user priority bitmap for FCoE + */ +u8 ixgbe_fcoe_getapp(struct ixgbe_adapter *adapter) +{ + int i; + u8 tc; + u32 up2tc; + + up2tc = IXGBE_READ_REG(&adapter->hw, IXGBE_RTTUP2TC); + for (i = 0; i < MAX_USER_PRIORITY; i++) { + tc = (u8)(up2tc >> (i * IXGBE_RTTUP2TC_UP_SHIFT)); + tc &= (MAX_TRAFFIC_CLASS - 1); + if (adapter->fcoe.tc == tc) + return 1 << i; + } + + return 0; +} + +/** + * ixgbe_fcoe_setapp - sets the user priority bitmap for FCoE + * @adapter : ixgbe adapter + * @up : 802.1p user priority bitmap + * + * Finds out the traffic class from the input user priority + * bitmap for FCoE. + * + * Returns : 0 on success otherwise returns 1 on error + */ +u8 ixgbe_fcoe_setapp(struct ixgbe_adapter *adapter, u8 up) +{ + int i; + u32 up2tc; + + /* valid user priority bitmap must not be 0 */ + if (up) { + /* from user priority to the corresponding traffic class */ + up2tc = IXGBE_READ_REG(&adapter->hw, IXGBE_RTTUP2TC); + for (i = 0; i < MAX_USER_PRIORITY; i++) { + if (up & (1 << i)) { + up2tc >>= (i * IXGBE_RTTUP2TC_UP_SHIFT); + up2tc &= (MAX_TRAFFIC_CLASS - 1); + adapter->fcoe.tc = (u8)up2tc; + return 0; + } + } + } + + return 1; +} +#endif /* CONFIG_IXGBE_DCB */ |