netdev - [PATCH] netdev: create an "is_napi

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Message-ID: <20071113230636.GJ8421@austin.ibm.com>
Date:	Tue, 13 Nov 2007 17:06:36 -0600
From:	linas@...tin.ibm.com (Linas Vepstas)
To:	Jeff Garzik <jeff@...zik.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	NetDev <netdev@...r.kernel.org>, e1000-devel@...ts.sourceforge.net
Subject: [PATCH] netdev: create an "is_napi_enabled()" call


In certain rare cases, it can be nice to be able to check
if napi is enabled or not. Create an is_napi_enabled() call.

Signed-off-by: Linas Vepstas <linas@...tin.ibm.com>
-------
Actually, I'm confused about whether I'd mailed this previously.
It might be a duplicate submission.

 include/linux/netdevice.h |   11 +++++++++++
 1 file changed, 11 insertions(+)

Index: linux-2.6.23-rc8-mm1/include/linux/netdevice.h
===================================================================
--- linux-2.6.23-rc8-mm1.orig/include/linux/netdevice.h	2007-11-09 17:36:51.000000000 -0600
+++ linux-2.6.23-rc8-mm1/include/linux/netdevice.h	2007-11-09 17:40:19.000000000 -0600
@@ -384,6 +384,17 @@ static inline void napi_enable(struct na
 	clear_bit(NAPI_STATE_SCHED, &n->state);
 }
 
+/**
+ *	is_napi_enabled - return non-zero if napi enabled
+ *	@n: napi context
+ *
+ * Return true if napi is enabled.
+ */
+static inline bool is_napi_enabled(struct napi_struct *n)
+{
+	return !test_bit(NAPI_STATE_SCHED, &n->state);
+}
+
 /*
  *	The DEVICE structure.
  *	Actually, this whole structure is a big mistake.  It mixes I/O
-
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