TCP receive tested with different IOB_BUFSIZE:
| | 256B vs 1534B | 512B vs 1534B | 768B vs 1534B |
| :---------: | :-----------: | :-----------: | :-----------: |
| Non-SMP | ~85% | ~93% | ~96% |
| armv8a-SMP | ~66% | ~84% | ~92% |
| rv32/64-SMP | ~52% | ~72% | ~83% |
It seems we still get performance penalty on smaller IOBs, and may be
affected more under SMP mode. It may be caused by critical sections in
IOB operations.
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
Some driver like virtio-net can offload fragmented IOBs, so an interface
to support this feature is needed.
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
Previously, the CONFIG_NET_LL_GUARDSIZE is fixed to 32 (64-Bit) or
28 (32-Bit), it's a little bit tricky.
Now add support to any value greater than minimal size.
Signed-off-by: Zhe Weng <wengzhe@xiaomi.com>
In a multi-core heterogeneous architecture, tun device nodes of protocol
stack core can be accessed by other cores through ioctl
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
In class disconnect, resetconfig will be performed based on
configid, so configid should be cleared after disconnect.
Signed-off-by: zhangyuan21 <zhangyuan21@xiaomi.com>
We use enter_critical_section to protect the read and write of priv structures,
sched_lock is mainly used to prevent active context switching caused by nxsem_post.
We do not actively switch contexts when reading and writing priv structures,
so sched_lock can be removed.
Signed-off-by: hujun5 <hujun5@xiaomi.com>
Adding the CONFIG_ARCH_PERF_EVENTS configuration to enable
hardware performance counting，solve the problem that some platform
hardware counting support is not perfect, you can choose to use
software interface.
This is configured using CONFIG_ARCH_PERF_EVENTS, so weak_functions
are removed to prevent confusion
To use hardware performance counting, must:
1. Configure CONFIG_ARCH_PERF_EVENTS, default selection
2. Call up_perf_init for initialization
Signed-off-by: wangming9 <wangming9@xiaomi.com>
In function ‘rpmsgblk_unlink_handler’:
misc/rpmsgblk_server.c:340:36: error: ‘const struct block_operations’ has no member named ‘unlink’
340 | msg->header.result = server->bops->unlink(server->blknode);
|
Signed-off-by: chao an <anchao@xiaomi.com>
req->usockid maybe < 0 or > CONFIG_NET_USRSOCK_RPMSG_SERVER_NSOCKS,
if so , priv->pfds[req->usockid] will access invalid memory.
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
The default mode for Rpmsgdev is to read/write data as long as possible for
caller, this mode does not apply to tun devices, tun devices can read and
write only one complete ip packet at a time.
Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
raiden00pl