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dcb: Add dcb_ieee_getapp_mask() for drivers to query APP settings

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With multiple APP entries per selector and protocol drivers
or stacks may want to pick a specific value or stripe traffic
across many priorities. Also if an APP entry in use is
deleted the stack/driver may want to choose from the existing
APP entries.

To facilitate this and avoid having duplicate code to walk
the APP ring provide a routine dcb_ieee_getapp_mask() to
return a u8 bitmask of all priorities set for the specified
selector and protocol. This routine and bitmask is a helper
for DCB kernel users.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Fastabend
2011-06-21 07:34:53 +00:00
committed by David S. Miller
parent f9ae7e4b51
commit a364c8cf80
2 changed files with 27 additions and 0 deletions
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include/net/dcbnl.h
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@@ -32,6 +32,7 @@ u8 dcb_setapp(struct net_device *, struct dcb_app *);
u8 dcb_getapp(struct net_device *, struct dcb_app *);
int dcb_ieee_setapp(struct net_device *, struct dcb_app *);
int dcb_ieee_delapp(struct net_device *, struct dcb_app *);
u8 dcb_ieee_getapp_mask(struct net_device *, struct dcb_app *);
int dcbnl_notify(struct net_device *dev, int event, int cmd, u32 seq, u32 pid);