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bnx2x: Allow vfs to disable txvlan offload

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[ Upstream commit 92f85f05ca ]

VF clients are configured as enforced, meaning firmware is validating
the correctness of their ethertype/vid during transmission.
Once txvlan is disabled, VF would start getting SKBs for transmission
here vlan is on the payload - but it'll pass the packet's ethertype
instead of the vid, leading to firmware declaring it as malicious.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mintz, Yuval
2017-06-09 17:17:01 +03:00
committed by Greg Kroah-Hartman
parent 30b1cd1847
commit d85cbd9470
1 changed files with 15 additions and 4 deletions
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19
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
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@@ -3943,15 +3943,26 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
/* when transmitting in a vf, start bd must hold the ethertype
* for fw to enforce it
*/
u16 vlan_tci = 0;
#ifndef BNX2X_STOP_ON_ERROR
if (IS_VF(bp))
if (IS_VF(bp)) {
#endif
tx_start_bd->vlan_or_ethertype =
cpu_to_le16(ntohs(eth->h_proto));
/* Still need to consider inband vlan for enforced */
if (__vlan_get_tag(skb, &vlan_tci)) {
tx_start_bd->vlan_or_ethertype =
cpu_to_le16(ntohs(eth->h_proto));
} else {
tx_start_bd->bd_flags.as_bitfield |=
(X_ETH_INBAND_VLAN <<
ETH_TX_BD_FLAGS_VLAN_MODE_SHIFT);
tx_start_bd->vlan_or_ethertype =
cpu_to_le16(vlan_tci);
}
#ifndef BNX2X_STOP_ON_ERROR
else
} else {
/* used by FW for packet accounting */
tx_start_bd->vlan_or_ethertype = cpu_to_le16(pkt_prod);
}
#endif
}