linux-kernel - [15/65] ah: Dont return NET_XMIT

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Date:	Wed, 01 Feb 2012 12:55:55 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Nick Bowler <nbowler@...iptictech.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [15/65] ah: Dont return NET_XMIT_DROP on input.

3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Nick Bowler <nbowler@...iptictech.com>

commit 4b90a603a1b21d63cf743cc833680cb195a729f6 upstream.

When the ahash driver returns -EBUSY, AH4/6 input functions return
NET_XMIT_DROP, presumably copied from the output code path.  But
returning transmit codes on input doesn't make a lot of sense.
Since NET_XMIT_DROP is a positive int, this gets interpreted as
the next header type (i.e., success).  As that can only end badly,
remove the check.

Signed-off-by: Nick Bowler <nbowler@...iptictech.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 net/ipv4/ah4.c |    2 --
 net/ipv6/ah6.c |    2 --
 2 files changed, 4 deletions(-)

--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -369,8 +369,6 @@ static int ah_input(struct xfrm_state *x
 		if (err == -EINPROGRESS)
 			goto out;

-		if (err == -EBUSY)
-			err = NET_XMIT_DROP;
 		goto out_free;
 	}

--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -581,8 +581,6 @@ static int ah6_input(struct xfrm_state *
 		if (err == -EINPROGRESS)
 			goto out;

-		if (err == -EBUSY)
-			err = NET_XMIT_DROP;
 		goto out_free;
 	}

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