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ixgbe: Add function for obtaining FCoE TC based on FCoE user priority

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In upcoming patches it will become increasingly common to need to determine
the FCoE traffic class in order to determine the correct queues for FCoE.
In order to make this easier I am adding a function for obtaining the FCoE
traffic class based on the user priority.

Cc: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck 2012-06-02 00:11:02 +00:00 • committed by Jeff Kirsher
parent 02debdc9b9
commit 800bd607c3
4 changed files with 22 additions and 15 deletions
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7
drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c
View file

@ -49,8 +49,8 @@ static inline bool ixgbe_cache_ring_rss(struct ixgbe_adapter *adapter)
return true;
}
#ifdef CONFIG_IXGBE_DCB
#ifdef CONFIG_IXGBE_DCB
/* ixgbe_get_first_reg_idx - Return first register index associated with ring */
static void ixgbe_get_first_reg_idx(struct ixgbe_adapter *adapter, u8 tc,
unsigned int *tx, unsigned int *rx)
@ -343,13 +343,10 @@ static inline bool ixgbe_set_dcb_queues(struct ixgbe_adapter *adapter)
* configuration later.
*/
if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
u8 prio_tc[MAX_USER_PRIORITY] = {0};
int tc;
u8 tc = ixgbe_fcoe_get_tc(adapter);
struct ixgbe_ring_feature *f =
&adapter->ring_feature[RING_F_FCOE];
ixgbe_dcb_unpack_map(&adapter->dcb_cfg, DCB_TX_CONFIG, prio_tc);
tc = prio_tc[adapter->fcoe.up];
f->indices = dev->tc_to_txq[tc].count;
f->offset = dev->tc_to_txq[tc].offset;
}