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-rw-r--r--drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c5
-rw-r--r--drivers/net/ethernet/intel/ixgbe/ixgbe_main.c3
-rw-r--r--drivers/net/ethernet/intel/ixgbe/ixgbe_type.h1
3 files changed, 8 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c
index df1647fa892a..2a653ec954f5 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c
@@ -517,6 +517,7 @@ int ixgbe_fso(struct ixgbe_ring *tx_ring,
u32 vlan_macip_lens;
u32 fcoe_sof_eof = 0;
u32 mss_l4len_idx;
+ u32 type_tucmd = IXGBE_ADVTXT_TUCMD_FCOE;
u8 sof, eof;
if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_type != SKB_GSO_FCOE)) {
@@ -593,6 +594,8 @@ int ixgbe_fso(struct ixgbe_ring *tx_ring,
skb_shinfo(skb)->gso_size);
first->bytecount += (first->gso_segs - 1) * *hdr_len;
first->tx_flags |= IXGBE_TX_FLAGS_TSO;
+ /* Hardware expects L4T to be RSV for FCoE TSO */
+ type_tucmd |= IXGBE_ADVTXD_TUCMD_L4T_RSV;
}
/* set flag indicating FCOE to ixgbe_tx_map call */
@@ -610,7 +613,7 @@ int ixgbe_fso(struct ixgbe_ring *tx_ring,
/* write context desc */
ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, fcoe_sof_eof,
- IXGBE_ADVTXT_TUCMD_FCOE, mss_l4len_idx);
+ type_tucmd, mss_l4len_idx);
return 0;
}
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index a12f93dd8602..328d7a828e0b 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -3619,6 +3619,9 @@ void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32));
IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx),
ring->count * sizeof(union ixgbe_adv_rx_desc));
+ /* Force flushing of IXGBE_RDLEN to prevent MDD */
+ IXGBE_WRITE_FLUSH(hw);
+
IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0);
IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0);
ring->tail = adapter->io_addr + IXGBE_RDT(reg_idx);
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
index 5f53cc6c609a..bf7367a08716 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
@@ -2780,6 +2780,7 @@ struct ixgbe_adv_tx_context_desc {
#define IXGBE_ADVTXD_TUCMD_L4T_UDP 0x00000000 /* L4 Packet TYPE of UDP */
#define IXGBE_ADVTXD_TUCMD_L4T_TCP 0x00000800 /* L4 Packet TYPE of TCP */
#define IXGBE_ADVTXD_TUCMD_L4T_SCTP 0x00001000 /* L4 Packet TYPE of SCTP */
+#define IXGBE_ADVTXD_TUCMD_L4T_RSV 0x00001800 /* RSV L4 Packet TYPE */
#define IXGBE_ADVTXD_TUCMD_MKRREQ 0x00002000 /*Req requires Markers and CRC*/
#define IXGBE_ADVTXD_POPTS_IPSEC 0x00000400 /* IPSec offload request */
#define IXGBE_ADVTXD_TUCMD_IPSEC_TYPE_ESP 0x00002000 /* IPSec Type ESP */