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提交 ca1ba7ca 编写于 作者: D David S. Miller
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Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/jkirsher/net-next 

Conflicts:
	drivers/net/ethernet/intel/e1000e/netdev.c
上级 6461be3a 66f32a8b
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Showing with 445 addition and 359 deletion
drivers/net/ethernet/intel/e1000e/e1000.h
浏览文件 @ ca1ba7ca
......@@ -461,8 +461,9 @@ struct e1000_info {
#define E1000_RX_DESC_PS(R, i) \
(&(((union e1000_rx_desc_packet_split *)((R).desc))[i]))
#define E1000_RX_DESC_EXT(R, i) \
(&(((union e1000_rx_desc_extended *)((R).desc))[i]))
#define E1000_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i]))
#define E1000_RX_DESC(R, i) E1000_GET_DESC(R, i, e1000_rx_desc)
#define E1000_TX_DESC(R, i) E1000_GET_DESC(R, i, e1000_tx_desc)
#define E1000_CONTEXT_DESC(R, i) E1000_GET_DESC(R, i, e1000_context_desc)
......
drivers/net/ethernet/intel/e1000e/ethtool.c
浏览文件 @ ca1ba7ca
......@@ -1195,7 +1195,7 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
goto err_nomem;
}
rx_ring->size = rx_ring->count * sizeof(struct e1000_rx_desc);
rx_ring->size = rx_ring->count * sizeof(union e1000_rx_desc_extended);
rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size,
&rx_ring->dma, GFP_KERNEL);
if (!rx_ring->desc) {
......@@ -1221,7 +1221,7 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
ew32(RCTL, rctl);
for (i = 0; i < rx_ring->count; i++) {
struct e1000_rx_desc *rx_desc = E1000_RX_DESC(*rx_ring, i);
union e1000_rx_desc_extended *rx_desc;
struct sk_buff *skb;
skb = alloc_skb(2048 + NET_IP_ALIGN, GFP_KERNEL);
......@@ -1239,7 +1239,8 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter)
ret_val = 8;
goto err_nomem;
}
rx_desc->buffer_addr =
rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
rx_desc->read.buffer_addr =
cpu_to_le64(rx_ring->buffer_info[i].dma);
memset(skb->data, 0x00, skb->len);
}
......
drivers/net/ethernet/intel/e1000e/netdev.c
浏览文件 @ ca1ba7ca
......@@ -56,7 +56,7 @@
#define DRV_EXTRAVERSION "-k"
#define DRV_VERSION "1.4.4" DRV_EXTRAVERSION
#define DRV_VERSION "1.5.1" DRV_EXTRAVERSION
char e1000e_driver_name[] = "e1000e";
const char e1000e_driver_version[] = DRV_VERSION;
......@@ -192,7 +192,7 @@ static void e1000e_dump(struct e1000_adapter *adapter)
struct e1000_buffer *buffer_info;
struct e1000_ring *rx_ring = adapter->rx_ring;
union e1000_rx_desc_packet_split *rx_desc_ps;
struct e1000_rx_desc *rx_desc;
union e1000_rx_desc_extended *rx_desc;
struct my_u1 {
u64 a;
u64 b;
......@@ -399,41 +399,70 @@ static void e1000e_dump(struct e1000_adapter *adapter)
break;
default:
case 0:
/* Legacy Receive Descriptor Format
/* Extended Receive Descriptor (Read) Format
*
* +-----------------------------------------------------+
* | Buffer Address [63:0] |
* 0 | Buffer Address [63:0] |
* +-----------------------------------------------------+
* | VLAN Tag | Errors | Status 0 | Packet csum | Length |
* 8 | Reserved |
* +-----------------------------------------------------+
* 63 48 47 40 39 32 31 16 15 0
*/
printk(KERN_INFO "Rl[desc] [address 63:0 ] "
"[vl er S cks ln] [bi->dma ] [bi->skb] "
"<-- Legacy format\n");
for (i = 0; rx_ring->desc && (i < rx_ring->count); i++) {
rx_desc = E1000_RX_DESC(*rx_ring, i);
printk(KERN_INFO "R [desc] [buf addr 63:0 ] "
"[reserved 63:0 ] [bi->dma ] "
"[bi->skb] <-- Ext (Read) format\n");
/* Extended Receive Descriptor (Write-Back) Format
*
* 63 48 47 32 31 24 23 4 3 0
* +------------------------------------------------------+
* | RSS Hash | | | |
* 0 +-------------------+ Rsvd | Reserved | MRQ RSS |
* | Packet | IP | | | Type |
* | Checksum | Ident | | | |
* +------------------------------------------------------+
* 8 | VLAN Tag | Length | Extended Error | Extended Status |
* +------------------------------------------------------+
* 63 48 47 32 31 20 19 0
*/
printk(KERN_INFO "RWB[desc] [cs ipid mrq] "
"[vt ln xe xs] "
"[bi->skb] <-- Ext (Write-Back) format\n");
for (i = 0; i < rx_ring->count; i++) {
buffer_info = &rx_ring->buffer_info[i];
u0 = (struct my_u0 *)rx_desc;
printk(KERN_INFO "Rl[0x%03X] %016llX %016llX "
"%016llX %p", i,
(unsigned long long)le64_to_cpu(u0->a),
(unsigned long long)le64_to_cpu(u0->b),
rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
u1 = (struct my_u1 *)rx_desc;
staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
if (staterr & E1000_RXD_STAT_DD) {
/* Descriptor Done */
printk(KERN_INFO "RWB[0x%03X] %016llX "
"%016llX ---------------- %p", i,
(unsigned long long)le64_to_cpu(u1->a),
(unsigned long long)le64_to_cpu(u1->b),
buffer_info->skb);
} else {
printk(KERN_INFO "R [0x%03X] %016llX "
"%016llX %016llX %p", i,
(unsigned long long)le64_to_cpu(u1->a),
(unsigned long long)le64_to_cpu(u1->b),
(unsigned long long)buffer_info->dma,
buffer_info->skb);
if (netif_msg_pktdata(adapter))
print_hex_dump(KERN_INFO, "",
DUMP_PREFIX_ADDRESS, 16,
1,
phys_to_virt
(buffer_info->dma),
adapter->rx_buffer_len,
true);
}
if (i == rx_ring->next_to_use)
printk(KERN_CONT " NTU\n");
else if (i == rx_ring->next_to_clean)
printk(KERN_CONT " NTC\n");
else
printk(KERN_CONT "\n");
if (netif_msg_pktdata(adapter))
print_hex_dump(KERN_INFO, "",
DUMP_PREFIX_ADDRESS,
16, 1,
phys_to_virt(buffer_info->dma),
adapter->rx_buffer_len, true);
}
}
......@@ -576,7 +605,7 @@ static void e1000e_update_tdt_wa(struct e1000_adapter *adapter, unsigned int i)
}
/**
* e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended
* e1000_alloc_rx_buffers - Replace used receive buffers
* @adapter: address of board private structure
**/
static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
......@@ -585,7 +614,7 @@ static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
struct e1000_ring *rx_ring = adapter->rx_ring;
struct e1000_rx_desc *rx_desc;
union e1000_rx_desc_extended *rx_desc;
struct e1000_buffer *buffer_info;
struct sk_buff *skb;
unsigned int i;
......@@ -619,8 +648,8 @@ static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter,
break;
}
rx_desc = E1000_RX_DESC(*rx_ring, i);
rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) {
/*
......@@ -761,7 +790,7 @@ static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
{
struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
struct e1000_rx_desc *rx_desc;
union e1000_rx_desc_extended *rx_desc;
struct e1000_ring *rx_ring = adapter->rx_ring;
struct e1000_buffer *buffer_info;
struct sk_buff *skb;
......@@ -802,8 +831,8 @@ static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
PAGE_SIZE,
DMA_FROM_DEVICE);
rx_desc = E1000_RX_DESC(*rx_ring, i);
rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma);
if (unlikely(++i == rx_ring->count))
i = 0;
......@@ -841,28 +870,27 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
struct pci_dev *pdev = adapter->pdev;
struct e1000_hw *hw = &adapter->hw;
struct e1000_ring *rx_ring = adapter->rx_ring;
struct e1000_rx_desc *rx_desc, *next_rxd;
union e1000_rx_desc_extended *rx_desc, *next_rxd;
struct e1000_buffer *buffer_info, *next_buffer;
u32 length;
u32 length, staterr;
unsigned int i;
int cleaned_count = 0;
bool cleaned = 0;
unsigned int total_rx_bytes = 0, total_rx_packets = 0;
i = rx_ring->next_to_clean;
rx_desc = E1000_RX_DESC(*rx_ring, i);
rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
buffer_info = &rx_ring->buffer_info[i];
while (rx_desc->status & E1000_RXD_STAT_DD) {
while (staterr & E1000_RXD_STAT_DD) {
struct sk_buff *skb;
u8 status;
if (*work_done >= work_to_do)
break;
(*work_done)++;
rmb(); /* read descriptor and rx_buffer_info after status DD */
status = rx_desc->status;
skb = buffer_info->skb;
buffer_info->skb = NULL;
......@@ -871,7 +899,7 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
i++;
if (i == rx_ring->count)
i = 0;
next_rxd = E1000_RX_DESC(*rx_ring, i);
next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
prefetch(next_rxd);
next_buffer = &rx_ring->buffer_info[i];
......@@ -884,7 +912,7 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
DMA_FROM_DEVICE);
buffer_info->dma = 0;
length = le16_to_cpu(rx_desc->length);
length = le16_to_cpu(rx_desc->wb.upper.length);
/*
* !EOP means multiple descriptors were used to store a single
......@@ -893,7 +921,7 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
* next frame that _does_ have the EOP bit set, as it is by
* definition only a frame fragment
*/
if (unlikely(!(status & E1000_RXD_STAT_EOP)))
if (unlikely(!(staterr & E1000_RXD_STAT_EOP)))
adapter->flags2 |= FLAG2_IS_DISCARDING;
if (adapter->flags2 & FLAG2_IS_DISCARDING) {
......@@ -901,12 +929,12 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
e_dbg("Receive packet consumed multiple buffers\n");
/* recycle */
buffer_info->skb = skb;
if (status & E1000_RXD_STAT_EOP)
if (staterr & E1000_RXD_STAT_EOP)
adapter->flags2 &= ~FLAG2_IS_DISCARDING;
goto next_desc;
}
if (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) {
if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) {
/* recycle */
buffer_info->skb = skb;
goto next_desc;
......@@ -944,15 +972,15 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
skb_put(skb, length);
/* Receive Checksum Offload */
e1000_rx_checksum(adapter,
(u32)(status) |
((u32)(rx_desc->errors) << 24),
le16_to_cpu(rx_desc->csum), skb);
e1000_rx_checksum(adapter, staterr,
le16_to_cpu(rx_desc->wb.lower.hi_dword.
csum_ip.csum), skb);
e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special);
e1000_receive_skb(adapter, netdev, skb, staterr,
rx_desc->wb.upper.vlan);
next_desc:
rx_desc->status = 0;
rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
/* return some buffers to hardware, one at a time is too slow */
if (cleaned_count >= E1000_RX_BUFFER_WRITE) {
......@@ -964,6 +992,8 @@ static bool e1000_clean_rx_irq(struct e1000_adapter *adapter,
/* use prefetched values */
rx_desc = next_rxd;
buffer_info = next_buffer;
staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
}
rx_ring->next_to_clean = i;
......@@ -1347,35 +1377,34 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
struct net_device *netdev = adapter->netdev;
struct pci_dev *pdev = adapter->pdev;
struct e1000_ring *rx_ring = adapter->rx_ring;
struct e1000_rx_desc *rx_desc, *next_rxd;
union e1000_rx_desc_extended *rx_desc, *next_rxd;
struct e1000_buffer *buffer_info, *next_buffer;
u32 length;
u32 length, staterr;
unsigned int i;
int cleaned_count = 0;
bool cleaned = false;
unsigned int total_rx_bytes=0, total_rx_packets=0;
i = rx_ring->next_to_clean;
rx_desc = E1000_RX_DESC(*rx_ring, i);
rx_desc = E1000_RX_DESC_EXT(*rx_ring, i);
staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
buffer_info = &rx_ring->buffer_info[i];
while (rx_desc->status & E1000_RXD_STAT_DD) {
while (staterr & E1000_RXD_STAT_DD) {
struct sk_buff *skb;
u8 status;
if (*work_done >= work_to_do)
break;
(*work_done)++;
rmb(); /* read descriptor and rx_buffer_info after status DD */
status = rx_desc->status;
skb = buffer_info->skb;
buffer_info->skb = NULL;
++i;
if (i == rx_ring->count)
i = 0;
next_rxd = E1000_RX_DESC(*rx_ring, i);
next_rxd = E1000_RX_DESC_EXT(*rx_ring, i);
prefetch(next_rxd);
next_buffer = &rx_ring->buffer_info[i];
......@@ -1386,15 +1415,14 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
DMA_FROM_DEVICE);
buffer_info->dma = 0;
length = le16_to_cpu(rx_desc->length);
length = le16_to_cpu(rx_desc->wb.upper.length);
/* errors is only valid for DD + EOP descriptors */
if (unlikely((status & E1000_RXD_STAT_EOP) &&
(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) {
if (unlikely((staterr & E1000_RXD_STAT_EOP) &&
(staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK))) {
/* recycle both page and skb */
buffer_info->skb = skb;
/* an error means any chain goes out the window
* too */
/* an error means any chain goes out the window too */
if (rx_ring->rx_skb_top)
dev_kfree_skb_irq(rx_ring->rx_skb_top);
rx_ring->rx_skb_top = NULL;
......@@ -1402,7 +1430,7 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
}
#define rxtop (rx_ring->rx_skb_top)
if (!(status & E1000_RXD_STAT_EOP)) {
if (!(staterr & E1000_RXD_STAT_EOP)) {
/* this descriptor is only the beginning (or middle) */
if (!rxtop) {
/* this is the beginning of a chain */
......@@ -1457,10 +1485,9 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
}
/* Receive Checksum Offload XXX recompute due to CRC strip? */
e1000_rx_checksum(adapter,
(u32)(status) |
((u32)(rx_desc->errors) << 24),
le16_to_cpu(rx_desc->csum), skb);
e1000_rx_checksum(adapter, staterr,
le16_to_cpu(rx_desc->wb.lower.hi_dword.
csum_ip.csum), skb);
/* probably a little skewed due to removing CRC */
total_rx_bytes += skb->len;
......@@ -1473,11 +1500,11 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
goto next_desc;
}
e1000_receive_skb(adapter, netdev, skb, status,
rx_desc->special);
e1000_receive_skb(adapter, netdev, skb, staterr,
rx_desc->wb.upper.vlan);
next_desc:
rx_desc->status = 0;
rx_desc->wb.upper.status_error &= cpu_to_le32(~0xFF);
/* return some buffers to hardware, one at a time is too slow */
if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
......@@ -1489,6 +1516,8 @@ static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter,
/* use prefetched values */
rx_desc = next_rxd;
buffer_info = next_buffer;
staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
}
rx_ring->next_to_clean = i;
......@@ -2887,6 +2916,10 @@ static void e1000_setup_rctl(struct e1000_adapter *adapter)
break;
}
/* Enable Extended Status in all Receive Descriptors */
rfctl = er32(RFCTL);
rfctl |= E1000_RFCTL_EXTEN;
/*
* 82571 and greater support packet-split where the protocol
* header is placed in skb->data and the packet data is
......@@ -2912,9 +2945,6 @@ static void e1000_setup_rctl(struct e1000_adapter *adapter)
if (adapter->rx_ps_pages) {
u32 psrctl = 0;
/* Configure extra packet-split registers */
rfctl = er32(RFCTL);
rfctl |= E1000_RFCTL_EXTEN;
/*
* disable packet split support for IPv6 extension headers,
* because some malformed IPv6 headers can hang the Rx
......@@ -2922,8 +2952,6 @@ static void e1000_setup_rctl(struct e1000_adapter *adapter)
rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
E1000_RFCTL_NEW_IPV6_EXT_DIS);
ew32(RFCTL, rfctl);
/* Enable Packet split descriptors */
rctl |= E1000_RCTL_DTYP_PS;
......@@ -2946,6 +2974,7 @@ static void e1000_setup_rctl(struct e1000_adapter *adapter)
ew32(PSRCTL, psrctl);
}
ew32(RFCTL, rfctl);
ew32(RCTL, rctl);
/* just started the receive unit, no need to restart */
adapter->flags &= ~FLAG_RX_RESTART_NOW;
......@@ -2971,11 +3000,11 @@ static void e1000_configure_rx(struct e1000_adapter *adapter)
adapter->clean_rx = e1000_clean_rx_irq_ps;
adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps;
} else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) {
rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
adapter->clean_rx = e1000_clean_jumbo_rx_irq;
adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
} else {
rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
rdlen = rx_ring->count * sizeof(union e1000_rx_desc_extended);
adapter->clean_rx = e1000_clean_rx_irq;
adapter->alloc_rx_buf = e1000_alloc_rx_buffers;
}
......
drivers/net/ethernet/intel/ixgbe/ixgbe.h
浏览文件 @ ca1ba7ca
......@@ -91,13 +91,16 @@
#define IXGBE_RX_BUFFER_WRITE 16 /* Must be power of 2 */
#define IXGBE_TX_FLAGS_CSUM (u32)(1)
#define IXGBE_TX_FLAGS_VLAN (u32)(1 << 1)
#define IXGBE_TX_FLAGS_TSO (u32)(1 << 2)
#define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 3)
#define IXGBE_TX_FLAGS_FCOE (u32)(1 << 4)
#define IXGBE_TX_FLAGS_FSO (u32)(1 << 5)
#define IXGBE_TX_FLAGS_HW_VLAN (u32)(1 << 1)
#define IXGBE_TX_FLAGS_SW_VLAN (u32)(1 << 2)
#define IXGBE_TX_FLAGS_TSO (u32)(1 << 3)
#define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 4)
#define IXGBE_TX_FLAGS_FCOE (u32)(1 << 5)
#define IXGBE_TX_FLAGS_FSO (u32)(1 << 6)
#define IXGBE_TX_FLAGS_MAPPED_AS_PAGE (u32)(1 << 7)
#define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000
#define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0x0000e000
#define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0xe0000000
#define IXGBE_TX_FLAGS_VLAN_PRIO_SHIFT 29
#define IXGBE_TX_FLAGS_VLAN_SHIFT 16
#define IXGBE_MAX_RSC_INT_RATE 162760
......@@ -141,14 +144,14 @@ struct vf_macvlans {
/* wrapper around a pointer to a socket buffer,
* so a DMA handle can be stored along with the buffer */
struct ixgbe_tx_buffer {
struct sk_buff *skb;
dma_addr_t dma;
union ixgbe_adv_tx_desc *next_to_watch;
unsigned long time_stamp;
u16 length;
u16 next_to_watch;
unsigned int bytecount;
dma_addr_t dma;
u32 length;
u32 tx_flags;
struct sk_buff *skb;
u32 bytecount;
u16 gso_segs;
u8 mapped_as_page;
};
struct ixgbe_rx_buffer {
......
drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
浏览文件 @ ca1ba7ca
......@@ -414,7 +414,7 @@ static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
u8 prio_tc[MAX_TRAFFIC_CLASS] = {0, 1, 2, 3, 4, 5, 6, 7};
int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
#ifdef CONFIG_FCOE
#ifdef IXGBE_FCOE
if (adapter->netdev->features & NETIF_F_FCOE_MTU)
max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE);
#endif
......
drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c
浏览文件 @ ca1ba7ca
......@@ -241,10 +241,12 @@ static int ixgbe_fcoe_ddp_setup(struct net_device *netdev, u16 xid,
*/
if (lastsize == bufflen) {
if (j >= IXGBE_BUFFCNT_MAX) {
e_err(drv, "xid=%x:%d,%d,%d:addr=%llx "
"not enough user buffers. We need an extra "
"buffer because lastsize is bufflen.\n",
printk_once("Will NOT use DDP since there are not "
"enough user buffers. We need an extra "
"buffer because lastsize is bufflen. "
"xid=%x:%d,%d,%d:addr=%llx\n",
xid, i, j, dmacount, (u64)addr);
goto out_noddp_free;
}
......
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