netdev - [net-next PATCH 6/7] ixgbe: dcb, do not tag tc_prio

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20100519020011.18654.3836.stgit@localhost.localdomain>
Date:	Tue, 18 May 2010 19:00:11 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, gospo@...hat.com,
	John Fastabend <john.r.fastabend@...el.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next PATCH 6/7] ixgbe: dcb, do not tag tc_prio_control frames

From: John Fastabend <john.r.fastabend@...el.com>

The network stack indicate packets should not be DCB
tagged by setting the priority to TC_PRIO_CONTROL. One
usage for this is lldp frames which are not suppossed
to be tagged.

Signed-off-by: John Fastabend <john.r.fastabend@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---

 drivers/net/ixgbe/ixgbe_main.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index d80bb1a..caf1114 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -6075,7 +6075,8 @@ static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb,
 		}
 		tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
 		tx_flags |= IXGBE_TX_FLAGS_VLAN;
-	} else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
+	} else if (adapter->flags & IXGBE_FLAG_DCB_ENABLED &&
+		   skb->priority != TC_PRIO_CONTROL) {
 		tx_flags |= ((skb->queue_mapping & 0x7) << 13);
 		tx_flags <<= IXGBE_TX_FLAGS_VLAN_SHIFT;
 		tx_flags |= IXGBE_TX_FLAGS_VLAN;

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html