be2net: fix a Tx stall bug caused by a specific ipv6 packet
The ASIC could lockup in the transmit path when it tries
to insert VLAN in a specific ipv6 packet.
1) Identify the packet which can cause this.
2) Check if the firmware provides a workaround to prevent this.
3) If workaround is not present, drop the packet.
4) If the firmware provides a workaround, insert the VLAN tag in the
packet and inform the firmware to skip further VLAN insertions.
Signed-off-by: Ajit Khaparde <ajit.khaparde@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.h b/drivers/net/ethernet/emulex/benet/be_cmds.h
index 9697086..07fd927 100644
--- a/drivers/net/ethernet/emulex/benet/be_cmds.h
+++ b/drivers/net/ethernet/emulex/benet/be_cmds.h
@@ -84,6 +84,9 @@
#define ASYNC_EVENT_QOS_SPEED 0x1
#define ASYNC_EVENT_COS_PRIORITY 0x2
#define ASYNC_EVENT_PVID_STATE 0x3
+#define ASYNC_EVENT_CODE_QNQ 0x6
+#define ASYNC_DEBUG_EVENT_TYPE_QNQ 1
+
struct be_async_event_trailer {
u32 code;
};
@@ -144,6 +147,16 @@
struct be_async_event_trailer trailer;
} __packed;
+/* async event indicating outer VLAN tag in QnQ */
+struct be_async_event_qnq {
+ u8 valid; /* Indicates if outer VLAN is valid */
+ u8 rsvd0;
+ u16 vlan_tag;
+ u32 event_tag;
+ u8 rsvd1[4];
+ struct be_async_event_trailer trailer;
+} __packed;
+
struct be_mcc_mailbox {
struct be_mcc_wrb wrb;
struct be_mcc_compl compl;