From: David Woodhouse <dwmw2@infradead.org>
To: netdev@vger.kernel.org
Cc: chas@cmf.nrl.navy.mil, krzysiek@podlesie.net,
David Woodhouse <dwmw2@infradead.org>,
David Woodhouse <David.Woodhouse@intel.com>
Subject: [PATCH 08/17] br2684: don't send frames on not-ready vcc
Date: Fri, 30 Nov 2012 00:35:27 +0000 [thread overview]
Message-ID: <1354235736-26833-9-git-send-email-dwmw2@infradead.org> (raw)
In-Reply-To: <1354235736-26833-1-git-send-email-dwmw2@infradead.org>
Avoid submitting packets to a vcc which is being closed. Things go badly
wrong when the ->pop method gets later called after everything's been
torn down.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Acked-by: Krzysztof Mazur <krzysiek@podlesie.net>
---
net/atm/br2684.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index 8eb6fbe..c483021 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -249,6 +249,12 @@ static int br2684_xmit_vcc(struct sk_buff *skb, struct net_device *dev,
skb_debug(skb);
ATM_SKB(skb)->vcc = atmvcc = brvcc->atmvcc;
+ if (test_bit(ATM_VF_RELEASED, &atmvcc->flags) ||
+ test_bit(ATM_VF_CLOSE, &atmvcc->flags) ||
+ !test_bit(ATM_VF_READY, &atmvcc->flags)) {
+ dev_kfree_skb(skb);
+ return 0;
+ }
pr_debug("atm_skb(%p)->vcc(%p)->dev(%p)\n", skb, atmvcc, atmvcc->dev);
atomic_add(skb->truesize, &sk_atm(atmvcc)->sk_wmem_alloc);
ATM_SKB(skb)->atm_options = atmvcc->atm_options;
--
1.8.0
next prev parent reply other threads:[~2012-11-30 0:36 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-30 0:35 [PATCH 00/17] ATM fixes for pppoatm/br2684 David Woodhouse
2012-11-30 0:35 ` [PATCH 01/17] atm: add owner of push() callback to atmvcc David Woodhouse
2012-11-30 0:35 ` [PATCH 02/17] pppoatm: allow assign only on a connected socket David Woodhouse
2012-11-30 0:35 ` [PATCH 03/17] pppoatm: fix module_put() race David Woodhouse
2012-11-30 0:35 ` [PATCH 04/17] pppoatm: take ATM socket lock in pppoatm_send() David Woodhouse
2012-11-30 0:35 ` [PATCH 05/17] pppoatm: drop frames to not-ready vcc David Woodhouse
2012-11-30 10:27 ` Krzysztof Mazur
2012-11-30 0:35 ` [PATCH 06/17] pppoatm: do not inline pppoatm_may_send() David Woodhouse
2012-11-30 0:35 ` [PATCH 07/17] solos-pci: Wait for pending TX to complete when releasing vcc David Woodhouse
2012-12-02 0:17 ` [PATCH v2 " David Woodhouse
2012-11-30 0:35 ` David Woodhouse [this message]
2012-11-30 0:35 ` [PATCH 09/17] atm: Add release_cb() callback to vcc David Woodhouse
2012-11-30 0:35 ` [PATCH 10/17] pppoatm: fix missing wakeup in pppoatm_send() David Woodhouse
2012-11-30 0:35 ` [PATCH 11/17] br2684: fix module_put() race David Woodhouse
2012-11-30 0:35 ` [PATCH 12/17] solos-pci: Fix leak of skb received for unknown vcc David Woodhouse
2012-11-30 0:35 ` [PATCH 13/17] br2684: allow assign only on a connected socket David Woodhouse
2012-11-30 0:35 ` [PATCH 14/17] pppoatm: optimise PPP channel wakeups after sock_owned_by_user() David Woodhouse
2012-11-30 0:35 ` [PATCH 15/17] solos-pci: clean up pclose() function David Woodhouse
2012-11-30 0:35 ` [PATCH 16/17] solos-pci: use GFP_KERNEL where possible, not GFP_ATOMIC David Woodhouse
2012-11-30 0:35 ` [PATCH 17/17] solos-pci: remove list_vccs() debugging function David Woodhouse
2012-11-30 10:44 ` [PATCH 00/17] ATM fixes for pppoatm/br2684 Krzysztof Mazur
2012-11-30 20:22 ` David Woodhouse
2012-12-01 16:43 ` David Miller
2012-12-01 16:44 ` David Miller
2012-12-01 16:48 ` David Woodhouse
2012-12-01 17:02 ` Chas Williams (CONTRACTOR)
2012-12-01 17:21 ` David Woodhouse
2012-12-02 1:57 ` Chas Williams (CONTRACTOR)
2012-12-02 2:17 ` David Miller
2012-12-01 17:33 ` David Woodhouse
2012-12-02 0:40 ` David Woodhouse
2012-12-02 1:49 ` David Miller
2012-12-02 8:14 ` David Woodhouse
2012-12-02 21:29 ` Checking struct size against sizeof(skb->cb) (was Re: [PATCH 00/17] ATM fixes for pppoatm/br2684) David Woodhouse
2012-12-20 14:03 ` skb->cb size checks " David Woodhouse
2012-12-02 0:35 ` [PATCH 00/17] ATM fixes for pppoatm/br2684 David Woodhouse
2012-12-02 1:47 ` David Miller
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