mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
118 lines
4.2 KiB
118 lines
4.2 KiB
.. SPDX-License-Identifier: GPL-2.0 |
|
|
|
======================================= |
|
QLogic QLGE 10Gb Ethernet device driver |
|
======================================= |
|
|
|
This driver use drgn and devlink for debugging. |
|
|
|
Dump kernel data structures in drgn |
|
----------------------------------- |
|
|
|
To dump kernel data structures, the following Python script can be used |
|
in drgn: |
|
|
|
.. code-block:: python |
|
|
|
def align(x, a): |
|
"""the alignment a should be a power of 2 |
|
""" |
|
mask = a - 1 |
|
return (x+ mask) & ~mask |
|
|
|
def struct_size(struct_type): |
|
struct_str = "struct {}".format(struct_type) |
|
return sizeof(Object(prog, struct_str, address=0x0)) |
|
|
|
def netdev_priv(netdevice): |
|
NETDEV_ALIGN = 32 |
|
return netdevice.value_() + align(struct_size("net_device"), NETDEV_ALIGN) |
|
|
|
name = 'xxx' |
|
qlge_device = None |
|
netdevices = prog['init_net'].dev_base_head.address_of_() |
|
for netdevice in list_for_each_entry("struct net_device", netdevices, "dev_list"): |
|
if netdevice.name.string_().decode('ascii') == name: |
|
print(netdevice.name) |
|
|
|
ql_adapter = Object(prog, "struct ql_adapter", address=netdev_priv(qlge_device)) |
|
|
|
The struct ql_adapter will be printed in drgn as follows, |
|
|
|
>>> ql_adapter |
|
(struct ql_adapter){ |
|
.ricb = (struct ricb){ |
|
.base_cq = (u8)0, |
|
.flags = (u8)120, |
|
.mask = (__le16)26637, |
|
.hash_cq_id = (u8 [1024]){ 172, 142, 255, 255 }, |
|
.ipv6_hash_key = (__le32 [10]){}, |
|
.ipv4_hash_key = (__le32 [4]){}, |
|
}, |
|
.flags = (unsigned long)0, |
|
.wol = (u32)0, |
|
.nic_stats = (struct nic_stats){ |
|
.tx_pkts = (u64)0, |
|
.tx_bytes = (u64)0, |
|
.tx_mcast_pkts = (u64)0, |
|
.tx_bcast_pkts = (u64)0, |
|
.tx_ucast_pkts = (u64)0, |
|
.tx_ctl_pkts = (u64)0, |
|
.tx_pause_pkts = (u64)0, |
|
... |
|
}, |
|
.active_vlans = (unsigned long [64]){ |
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 52780853100545, 18446744073709551615, |
|
18446619461681283072, 0, 42949673024, 2147483647, |
|
}, |
|
.rx_ring = (struct rx_ring [17]){ |
|
{ |
|
.cqicb = (struct cqicb){ |
|
.msix_vect = (u8)0, |
|
.reserved1 = (u8)0, |
|
.reserved2 = (u8)0, |
|
.flags = (u8)0, |
|
.len = (__le16)0, |
|
.rid = (__le16)0, |
|
... |
|
}, |
|
.cq_base = (void *)0x0, |
|
.cq_base_dma = (dma_addr_t)0, |
|
} |
|
... |
|
} |
|
} |
|
|
|
coredump via devlink |
|
-------------------- |
|
|
|
|
|
And the coredump obtained via devlink in json format looks like, |
|
|
|
.. code:: shell |
|
|
|
$ devlink health dump show DEVICE reporter coredump -p -j |
|
{ |
|
"Core Registers": { |
|
"segment": 1, |
|
"values": [ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 ] |
|
}, |
|
"Test Logic Regs": { |
|
"segment": 2, |
|
"values": [ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 ] |
|
}, |
|
"RMII Registers": { |
|
"segment": 3, |
|
"values": [ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 ] |
|
}, |
|
... |
|
"Sem Registers": { |
|
"segment": 50, |
|
"values": [ 0,0,0,0 ] |
|
} |
|
} |
|
|
|
When the module parameter qlge_force_coredump is set to be true, the MPI |
|
RISC reset before coredumping. So coredumping will much longer since |
|
devlink tool has to wait for 5 secs for the resetting to be |
|
finished.
|
|
|