rt-thread.git/components/net/lwip-2.1.2/src/include, branch v4.0.5

[Netif] Fix the eth_tx_msg protection

2021-09-11T05:11:57Z

The ethernetif use semaphore netif->tx_ack to protect the local variable `struct eth_tx_msg msg` in function `ethernetif_linkoutput`. But the function could be called in multiple context: LwIP "tcpip" thread, "erx" thread(on linkup) and any user thread that call `udp_sendto`. So the global semaphore protection is not sufficient. It could only wakeup the top priority waiting thread instead of the thread that owns the `msg` and may result the `msg` next in the mailbox got destructed. So to use a `rt_completion` within the `struct eth_tx_msg` and synchronize on that. This could deal the ownership issue in an easy way.

remove libc_errno.h & libc_limits.h

2021-05-21T18:50:35Z

[restore] Restore format

2021-04-15T04:43:56Z

[update] change the file encoding to UTF-8.

2021-04-06T03:41:14Z

[fix] remove the possible critical zone risk

2021-03-31T06:59:12Z

[fix] iperf speed test have been stable.

2021-03-31T05:37:19Z

[update] Added custom functions for RT-Thread.

2020-06-20T06:09:33Z

Signed-off-by: liuxianliang

[add] lwIP 2.1.2 transplantation on RT-Thread.

2020-06-20T06:01:09Z

Signed-off-by: liuxianliang

[add] the code of original lwIP 2.1.2.

2020-06-20T05:44:12Z

Signed-off-by: liuxianliang