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Message-ID: <20100211020752.23436.39811.stgit@localhost.localdomain>
Date: Wed, 10 Feb 2010 18:07:54 -0800
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, gospo@...hat.com,
Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next-2.6 PATCH v5 2/3] ixgbe: Add support for the new ethtool
n-tuple programming interface
From: Peter Waskiewicz <peter.p.waskiewicz.jr@...el.com>
This patch adds n-tuple filter programming to 82599.
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
drivers/net/ixgbe/ixgbe.h | 4 +
drivers/net/ixgbe/ixgbe_82599.c | 106 +++++++++++++++++++++++++++++++----
drivers/net/ixgbe/ixgbe_ethtool.c | 111 ++++++++++++++++++++++++++++++++++++-
drivers/net/ixgbe/ixgbe_main.c | 16 +++++
drivers/net/ixgbe/ixgbe_type.h | 9 +++
5 files changed, 228 insertions(+), 18 deletions(-)
diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index bffbe0d..19e94ee 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -453,6 +453,10 @@ extern s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 pballoc);
extern s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw,
struct ixgbe_atr_input *input,
u8 queue);
+extern s32 ixgbe_fdir_add_perfect_filter_82599(struct ixgbe_hw *hw,
+ struct ixgbe_atr_input *input,
+ struct ixgbe_atr_input_masks *input_masks,
+ u16 soft_id, u8 queue);
extern s32 ixgbe_atr_set_vlan_id_82599(struct ixgbe_atr_input *input,
u16 vlan_id);
extern s32 ixgbe_atr_set_src_ipv4_82599(struct ixgbe_atr_input *input,
diff --git a/drivers/net/ixgbe/ixgbe_82599.c b/drivers/net/ixgbe/ixgbe_82599.c
index d4ed6ad..4fa8633 100644
--- a/drivers/net/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ixgbe/ixgbe_82599.c
@@ -1439,6 +1439,9 @@ s32 ixgbe_init_fdir_perfect_82599(struct ixgbe_hw *hw, u32 pballoc)
/* Send interrupt when 64 filters are left */
fdirctrl |= 4 << IXGBE_FDIRCTRL_FULL_THRESH_SHIFT;
+ /* Initialize the drop queue to Rx queue 127 */
+ fdirctrl |= (127 << IXGBE_FDIRCTRL_DROP_Q_SHIFT);
+
switch (pballoc) {
case IXGBE_FDIR_PBALLOC_64K:
/* 2k - 1 perfect filters */
@@ -1628,6 +1631,7 @@ static u16 ixgbe_atr_compute_hash_82599(struct ixgbe_atr_input *atr_input,
* ixgbe_atr_set_vlan_id_82599 - Sets the VLAN id in the ATR input stream
* @input: input stream to modify
* @vlan: the VLAN id to load
+ * @vlan_mask: bitwise mask for the VLAN
**/
s32 ixgbe_atr_set_vlan_id_82599(struct ixgbe_atr_input *input, u16 vlan)
{
@@ -1641,6 +1645,7 @@ s32 ixgbe_atr_set_vlan_id_82599(struct ixgbe_atr_input *input, u16 vlan)
* ixgbe_atr_set_src_ipv4_82599 - Sets the source IPv4 address
* @input: input stream to modify
* @src_addr: the IP address to load
+ * @src_addr_mask: bitwise mask for the source IP address
**/
s32 ixgbe_atr_set_src_ipv4_82599(struct ixgbe_atr_input *input, u32 src_addr)
{
@@ -1658,6 +1663,7 @@ s32 ixgbe_atr_set_src_ipv4_82599(struct ixgbe_atr_input *input, u32 src_addr)
* ixgbe_atr_set_dst_ipv4_82599 - Sets the destination IPv4 address
* @input: input stream to modify
* @dst_addr: the IP address to load
+ * @dst_addr_mask: bitwise mask for the destination IP address
**/
s32 ixgbe_atr_set_dst_ipv4_82599(struct ixgbe_atr_input *input, u32 dst_addr)
{
@@ -1680,8 +1686,8 @@ s32 ixgbe_atr_set_dst_ipv4_82599(struct ixgbe_atr_input *input, u32 dst_addr)
* @src_addr_4: the fourth 4 bytes of the IP address to load
**/
s32 ixgbe_atr_set_src_ipv6_82599(struct ixgbe_atr_input *input,
- u32 src_addr_1, u32 src_addr_2,
- u32 src_addr_3, u32 src_addr_4)
+ u32 src_addr_1, u32 src_addr_2,
+ u32 src_addr_3, u32 src_addr_4)
{
input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET] = src_addr_4 & 0xff;
input->byte_stream[IXGBE_ATR_SRC_IPV6_OFFSET + 1] =
@@ -1723,8 +1729,8 @@ s32 ixgbe_atr_set_src_ipv6_82599(struct ixgbe_atr_input *input,
* @dst_addr_4: the fourth 4 bytes of the IP address to load
**/
s32 ixgbe_atr_set_dst_ipv6_82599(struct ixgbe_atr_input *input,
- u32 dst_addr_1, u32 dst_addr_2,
- u32 dst_addr_3, u32 dst_addr_4)
+ u32 dst_addr_1, u32 dst_addr_2,
+ u32 dst_addr_3, u32 dst_addr_4)
{
input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET] = dst_addr_4 & 0xff;
input->byte_stream[IXGBE_ATR_DST_IPV6_OFFSET + 1] =
@@ -1761,6 +1767,7 @@ s32 ixgbe_atr_set_dst_ipv6_82599(struct ixgbe_atr_input *input,
* ixgbe_atr_set_src_port_82599 - Sets the source port
* @input: input stream to modify
* @src_port: the source port to load
+ * @src_port_mask: bitwise mask for the source port
**/
s32 ixgbe_atr_set_src_port_82599(struct ixgbe_atr_input *input, u16 src_port)
{
@@ -1774,6 +1781,7 @@ s32 ixgbe_atr_set_src_port_82599(struct ixgbe_atr_input *input, u16 src_port)
* ixgbe_atr_set_dst_port_82599 - Sets the destination port
* @input: input stream to modify
* @dst_port: the destination port to load
+ * @dst_port_mask: bitwise mask for the destination port
**/
s32 ixgbe_atr_set_dst_port_82599(struct ixgbe_atr_input *input, u16 dst_port)
{
@@ -1802,7 +1810,7 @@ s32 ixgbe_atr_set_flex_byte_82599(struct ixgbe_atr_input *input, u16 flex_byte)
* @vm_pool: the Virtual Machine pool to load
**/
s32 ixgbe_atr_set_vm_pool_82599(struct ixgbe_atr_input *input,
- u8 vm_pool)
+ u8 vm_pool)
{
input->byte_stream[IXGBE_ATR_VM_POOL_OFFSET] = vm_pool;
@@ -1826,8 +1834,7 @@ s32 ixgbe_atr_set_l4type_82599(struct ixgbe_atr_input *input, u8 l4type)
* @input: input stream to search
* @vlan: the VLAN id to load
**/
-static s32 ixgbe_atr_get_vlan_id_82599(struct ixgbe_atr_input *input,
- u16 *vlan)
+static s32 ixgbe_atr_get_vlan_id_82599(struct ixgbe_atr_input *input, u16 *vlan)
{
*vlan = input->byte_stream[IXGBE_ATR_VLAN_OFFSET];
*vlan |= input->byte_stream[IXGBE_ATR_VLAN_OFFSET + 1] << 8;
@@ -2083,23 +2090,26 @@ s32 ixgbe_fdir_add_signature_filter_82599(struct ixgbe_hw *hw,
* ixgbe_fdir_add_perfect_filter_82599 - Adds a perfect filter
* @hw: pointer to hardware structure
* @input: input bitstream
+ * @input_masks: bitwise masks for relevant fields
+ * @soft_id: software index into the silicon hash tables for filter storage
* @queue: queue index to direct traffic to
*
* Note that the caller to this function must lock before calling, since the
* hardware writes must be protected from one another.
**/
s32 ixgbe_fdir_add_perfect_filter_82599(struct ixgbe_hw *hw,
- struct ixgbe_atr_input *input,
- u16 soft_id,
- u8 queue)
+ struct ixgbe_atr_input *input,
+ struct ixgbe_atr_input_masks *input_masks,
+ u16 soft_id, u8 queue)
{
u32 fdircmd = 0;
u32 fdirhash;
- u32 src_ipv4, dst_ipv4;
+ u32 src_ipv4 = 0, dst_ipv4 = 0;
u32 src_ipv6_1, src_ipv6_2, src_ipv6_3, src_ipv6_4;
u16 src_port, dst_port, vlan_id, flex_bytes;
u16 bucket_hash;
u8 l4type;
+ u8 fdirm = 0;
/* Get our input values */
ixgbe_atr_get_l4type_82599(input, &l4type);
@@ -2154,7 +2164,6 @@ s32 ixgbe_fdir_add_perfect_filter_82599(struct ixgbe_hw *hw,
/* IPv4 */
ixgbe_atr_get_src_ipv4_82599(input, &src_ipv4);
IXGBE_WRITE_REG(hw, IXGBE_FDIRIPSA, src_ipv4);
-
}
ixgbe_atr_get_dst_ipv4_82599(input, &dst_ipv4);
@@ -2163,7 +2172,78 @@ s32 ixgbe_fdir_add_perfect_filter_82599(struct ixgbe_hw *hw,
IXGBE_WRITE_REG(hw, IXGBE_FDIRVLAN, (vlan_id |
(flex_bytes << IXGBE_FDIRVLAN_FLEX_SHIFT)));
IXGBE_WRITE_REG(hw, IXGBE_FDIRPORT, (src_port |
- (dst_port << IXGBE_FDIRPORT_DESTINATION_SHIFT)));
+ (dst_port << IXGBE_FDIRPORT_DESTINATION_SHIFT)));
+
+ /*
+ * Program the relevant mask registers. If src/dst_port or src/dst_addr
+ * are zero, then assume a full mask for that field. Also assume that
+ * a VLAN of 0 is unspecified, so mask that out as well. L4type
+ * cannot be masked out in this implementation.
+ *
+ * This also assumes IPv4 only. IPv6 masking isn't supported at this
+ * point in time.
+ */
+ if (src_ipv4 == 0)
+ IXGBE_WRITE_REG(hw, IXGBE_FDIRSIP4M, 0xffffffff);
+ else
+ IXGBE_WRITE_REG(hw, IXGBE_FDIRSIP4M, input_masks->src_ip_mask);
+
+ if (dst_ipv4 == 0)
+ IXGBE_WRITE_REG(hw, IXGBE_FDIRDIP4M, 0xffffffff);
+ else
+ IXGBE_WRITE_REG(hw, IXGBE_FDIRDIP4M, input_masks->dst_ip_mask);
+
+ switch (l4type & IXGBE_ATR_L4TYPE_MASK) {
+ case IXGBE_ATR_L4TYPE_TCP:
+ if (src_port == 0)
+ IXGBE_WRITE_REG(hw, IXGBE_FDIRTCPM, 0xffff);
+ else
+ IXGBE_WRITE_REG(hw, IXGBE_FDIRTCPM,
+ input_masks->src_port_mask);
+
+ if (dst_port == 0)
+ IXGBE_WRITE_REG(hw, IXGBE_FDIRTCPM,
+ (IXGBE_READ_REG(hw, IXGBE_FDIRTCPM) |
+ (0xffff << 16)));
+ else
+ IXGBE_WRITE_REG(hw, IXGBE_FDIRTCPM,
+ (IXGBE_READ_REG(hw, IXGBE_FDIRTCPM) |
+ (input_masks->dst_port_mask << 16)));
+ break;
+ case IXGBE_ATR_L4TYPE_UDP:
+ if (src_port == 0)
+ IXGBE_WRITE_REG(hw, IXGBE_FDIRUDPM, 0xffff);
+ else
+ IXGBE_WRITE_REG(hw, IXGBE_FDIRUDPM,
+ input_masks->src_port_mask);
+
+ if (dst_port == 0)
+ IXGBE_WRITE_REG(hw, IXGBE_FDIRUDPM,
+ (IXGBE_READ_REG(hw, IXGBE_FDIRUDPM) |
+ (0xffff << 16)));
+ else
+ IXGBE_WRITE_REG(hw, IXGBE_FDIRUDPM,
+ (IXGBE_READ_REG(hw, IXGBE_FDIRUDPM) |
+ (input_masks->src_port_mask << 16)));
+ break;
+ default:
+ /* this already would have failed above */
+ break;
+ }
+
+ /* Program the last mask register, FDIRM */
+ if (input_masks->vlan_id_mask || !vlan_id)
+ /* Mask both VLAN and VLANP - bits 0 and 1 */
+ fdirm |= 0x3;
+
+ if (input_masks->data_mask || !flex_bytes)
+ /* Flex bytes need masking, so mask the whole thing - bit 4 */
+ fdirm |= 0x10;
+
+ /* Now mask VM pool and destination IPv6 - bits 5 and 2 */
+ fdirm |= 0x24;
+
+ IXGBE_WRITE_REG(hw, IXGBE_FDIRM, fdirm);
fdircmd |= IXGBE_FDIRCMD_CMD_ADD_FLOW;
fdircmd |= IXGBE_FDIRCMD_FILTER_UPDATE;
diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c
index 07a9410..0d23434 100644
--- a/drivers/net/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ixgbe/ixgbe_ethtool.c
@@ -979,6 +979,9 @@ static int ixgbe_get_sset_count(struct net_device *netdev, int sset)
return IXGBE_TEST_LEN;
case ETH_SS_STATS:
return IXGBE_STATS_LEN;
+ case ETH_SS_NTUPLE_FILTERS:
+ return (ETHTOOL_MAX_NTUPLE_LIST_ENTRY *
+ ETHTOOL_MAX_NTUPLE_STRING_PER_ENTRY);
default:
return -EOPNOTSUPP;
}
@@ -2150,23 +2153,124 @@ static int ixgbe_set_coalesce(struct net_device *netdev,
static int ixgbe_set_flags(struct net_device *netdev, u32 data)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
+ bool need_reset = false;
ethtool_op_set_flags(netdev, data);
- if (!(adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE))
- return 0;
-
/* if state changes we need to update adapter->flags and reset */
if ((!!(data & ETH_FLAG_LRO)) !=
(!!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED))) {
adapter->flags2 ^= IXGBE_FLAG2_RSC_ENABLED;
+ need_reset = true;
+ }
+
+ /*
+ * Check if Flow Director n-tuple support was enabled or disabled. If
+ * the state changed, we need to reset.
+ */
+ if ((adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) &&
+ (!(data & ETH_FLAG_NTUPLE))) {
+ /* turn off Flow Director perfect, set hash and reset */
+ adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
+ adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
+ need_reset = true;
+ } else if ((!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)) &&
+ (data & ETH_FLAG_NTUPLE)) {
+ /* turn off Flow Director hash, enable perfect and reset */
+ adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
+ adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
+ need_reset = true;
+ } else {
+ /* no state change */
+ }
+
+ if (need_reset) {
if (netif_running(netdev))
ixgbe_reinit_locked(adapter);
else
ixgbe_reset(adapter);
}
+
return 0;
+}
+
+static int ixgbe_set_rx_ntuple(struct net_device *dev,
+ struct ethtool_rx_ntuple *cmd)
+{
+ struct ixgbe_adapter *adapter = netdev_priv(dev);
+ struct ethtool_rx_ntuple_flow_spec fs = cmd->fs;
+ struct ixgbe_atr_input input_struct;
+ struct ixgbe_atr_input_masks input_masks;
+ int target_queue;
+
+ if (adapter->hw.mac.type == ixgbe_mac_82598EB)
+ return -EOPNOTSUPP;
+
+ /*
+ * Don't allow programming if the action is a queue greater than
+ * the number of online Tx queues.
+ */
+ if ((fs.action >= adapter->num_tx_queues) ||
+ (fs.action < ETHTOOL_RXNTUPLE_ACTION_DROP))
+ return -EINVAL;
+
+ memset(&input_struct, 0, sizeof(struct ixgbe_atr_input));
+ memset(&input_masks, 0, sizeof(struct ixgbe_atr_input_masks));
+
+ input_masks.src_ip_mask = fs.m_u.tcp_ip4_spec.ip4src;
+ input_masks.dst_ip_mask = fs.m_u.tcp_ip4_spec.ip4dst;
+ input_masks.src_port_mask = fs.m_u.tcp_ip4_spec.psrc;
+ input_masks.dst_port_mask = fs.m_u.tcp_ip4_spec.pdst;
+ input_masks.vlan_id_mask = fs.vlan_tag_mask;
+ /* only use the lowest 2 bytes for flex bytes */
+ input_masks.data_mask = (fs.data_mask & 0xffff);
+
+ switch (fs.flow_type) {
+ case TCP_V4_FLOW:
+ ixgbe_atr_set_l4type_82599(&input_struct, IXGBE_ATR_L4TYPE_TCP);
+ break;
+ case UDP_V4_FLOW:
+ ixgbe_atr_set_l4type_82599(&input_struct, IXGBE_ATR_L4TYPE_UDP);
+ break;
+ case SCTP_V4_FLOW:
+ ixgbe_atr_set_l4type_82599(&input_struct, IXGBE_ATR_L4TYPE_SCTP);
+ break;
+ default:
+ return -1;
+ }
+ /* Mask bits from the inputs based on user-supplied mask */
+ ixgbe_atr_set_src_ipv4_82599(&input_struct,
+ (fs.h_u.tcp_ip4_spec.ip4src & ~fs.m_u.tcp_ip4_spec.ip4src));
+ ixgbe_atr_set_dst_ipv4_82599(&input_struct,
+ (fs.h_u.tcp_ip4_spec.ip4dst & ~fs.m_u.tcp_ip4_spec.ip4dst));
+ /* 82599 expects these to be byte-swapped for perfect filtering */
+ ixgbe_atr_set_src_port_82599(&input_struct,
+ ((ntohs(fs.h_u.tcp_ip4_spec.psrc)) & ~fs.m_u.tcp_ip4_spec.psrc));
+ ixgbe_atr_set_dst_port_82599(&input_struct,
+ ((ntohs(fs.h_u.tcp_ip4_spec.pdst)) & ~fs.m_u.tcp_ip4_spec.pdst));
+
+ /* VLAN and Flex bytes are either completely masked or not */
+ if (!fs.vlan_tag_mask)
+ ixgbe_atr_set_vlan_id_82599(&input_struct, fs.vlan_tag);
+
+ if (!input_masks.data_mask)
+ /* make sure we only use the first 2 bytes of user data */
+ ixgbe_atr_set_flex_byte_82599(&input_struct,
+ (fs.data & 0xffff));
+
+ /* determine if we need to drop or route the packet */
+ if (fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP)
+ target_queue = MAX_RX_QUEUES - 1;
+ else
+ target_queue = fs.action;
+
+ spin_lock(&adapter->fdir_perfect_lock);
+ ixgbe_fdir_add_perfect_filter_82599(&adapter->hw, &input_struct,
+ &input_masks, 0, target_queue);
+ spin_unlock(&adapter->fdir_perfect_lock);
+
+ return 0;
}
static const struct ethtool_ops ixgbe_ethtool_ops = {
@@ -2204,6 +2308,7 @@ static const struct ethtool_ops ixgbe_ethtool_ops = {
.set_coalesce = ixgbe_set_coalesce,
.get_flags = ethtool_op_get_flags,
.set_flags = ixgbe_set_flags,
+ .set_rx_ntuple = ixgbe_set_rx_ntuple,
};
void ixgbe_set_ethtool_ops(struct net_device *netdev)
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 2a3c831..f04b539 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -3253,6 +3253,9 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
netif_carrier_off(netdev);
+ /* clear n-tuple filters that are cached */
+ ethtool_ntuple_flush(netdev);
+
if (!pci_channel_offline(adapter->pdev))
ixgbe_reset(adapter);
ixgbe_clean_all_tx_rings(adapter);
@@ -4187,6 +4190,7 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
{
struct ixgbe_hw *hw = &adapter->hw;
struct pci_dev *pdev = adapter->pdev;
+ struct net_device *dev = adapter->netdev;
unsigned int rss;
#ifdef CONFIG_IXGBE_DCB
int j;
@@ -4214,10 +4218,18 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
adapter->max_msix_q_vectors = MAX_MSIX_Q_VECTORS_82599;
adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE;
adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED;
- adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
+ if (dev->features & NETIF_F_NTUPLE) {
+ /* Flow Director perfect filter enabled */
+ adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
+ adapter->atr_sample_rate = 0;
+ spin_lock_init(&adapter->fdir_perfect_lock);
+ } else {
+ /* Flow Director hash filters enabled */
+ adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
+ adapter->atr_sample_rate = 20;
+ }
adapter->ring_feature[RING_F_FDIR].indices =
IXGBE_MAX_FDIR_INDICES;
- adapter->atr_sample_rate = 20;
adapter->fdir_pballoc = 0;
#ifdef IXGBE_FCOE
adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
diff --git a/drivers/net/ixgbe/ixgbe_type.h b/drivers/net/ixgbe/ixgbe_type.h
index 0db67c1..2be9074 100644
--- a/drivers/net/ixgbe/ixgbe_type.h
+++ b/drivers/net/ixgbe/ixgbe_type.h
@@ -2129,6 +2129,15 @@ struct ixgbe_atr_input {
u8 byte_stream[42];
};
+struct ixgbe_atr_input_masks {
+ u32 src_ip_mask;
+ u32 dst_ip_mask;
+ u16 src_port_mask;
+ u16 dst_port_mask;
+ u16 vlan_id_mask;
+ u16 data_mask;
+};
+
enum ixgbe_eeprom_type {
ixgbe_eeprom_uninitialized = 0,
ixgbe_eeprom_spi,
--
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