Re: [lwip-users] how to set the link up
One simplification would be to do those link monitoring operations on timer
running on LwIP thread, it removes threading issues (ie. Modifying stack
data, accessing PHY). Only dhcp/ip setup would need to come from external
memory/queue.
On Fri, 7 Jul 2017, 18:52 massimiliano cialdi, <
massimiliano.cia...@powersoft.it> wrote:
> On 07/07/2017 18:04, Noam Weissman wrote:
> >
> > Speed, duplex, link etc... is low level handling and the TCP stack is
> > not aware of that.
> >
> >
> > This is why you call the set_link_up/down in your task, informing the
> > stack !.
> >
> Yes, of course
>
> > The MDIO interface between your micro and PHY has no relation with
> > netif so why do you
> >
> > pass it as argument ?
> >
> because, in our implementation (NXP), netif->state is pointer to
> structure containing information to interface with PHY.
>
> > You several options to get the link state. You can connect the link
> > led in the ETH connector
> >
> > to your micro and read it as a simple IO.
> >
> >
> > If your PHY supports MII and it is connected as an MII you can hook an
> > interrupt to the link line.
> >
> We are compliant to RMII, except interrupt signal that is not routed, so
> we have to poll PHY.
>
> > The third option is what I suggested to read the PHY basic register
> > and check for the link bit.
> >
> Is what I do.
>
> > Your link task should not only check if link is up or down but also
> > know if it has changed !!. In your
> >
> > code is constantly calling the netifapi functions unless I missed
> > something ?
> >
> Yes, I have further modified the task:
>
> static void PhyStatus_Task( struct netif *netif )
> {
> enum { link_up, link_down } linkstatus = link_down;
> phy_speed_t physpeed;
> phy_duplex_t phyduplex;
> bool link;
> status_t result;
>
> ETHSPDOFF();
> netifapi_netif_set_link_down(netif);
> while(1)
> {
> result = ethernetif_GetLinkStatus(netif, );
> if(result == kStatus_Success)
> {
> switch(linkstatus)
> {
> case link_down:
> if(true == link)
> {
> linkstatus = link_up;
> netifapi_netif_set_link_up(netif);
> }
> break;
> case link_up:
> if(false == link)
> {
> linkstatus = link_down;
> netifapi_netif_set_link_down(netif);
> ETHSPDOFF();
> }
> else
> {
> result = ethernetif_GetLinkSpeedDuplex(netif,
> , );
> if(result == kStatus_Success)
> {
> ETHSPD(physpeed);
> }
> }
> break;
> }
> }
> vTaskDelay(100);
> }
> }
>
>
> I have investigated the problems: netifapi_netif_set_link_up() is called
> and it cause call to link callback, in this function I call another
> function in netifapi (netifapi_dhcp_start()), so I have a deadlock.
>
> best regards
> Max
>
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>
--
Pozdrawiam,
Krzysztof Wesołowski
+48 721 337 238
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Re: [lwip-users] Bootloader to Application + lwip crash
Can you load and start application without involving bootloader? It's quite possible that driver handling hardware init does not work as expected if hw was already configured (i.e. MAC, DMA are already setup and in the middle of operation when application start). On Mon, 1 May 2017, 23:27 nrichard, <nrich...@ipgphotonics.com> wrote: > Hello, > > My project consists of two sub-projects, a bootloader and an application. > My bootloader is programmed at the start of flash, and always starts when > the board is given power. I also have an application project, that through > my bootloader I use FTP to transfer the image to a certain address. Then I > can jump to that address and my application starts. This process works > perfectly fine. > > In both my application and my bootloader, I am using lwip version 2.0.2 raw > api for all internet related protocols and applications. These include > ftp, > http, telnet, and snmp. The bootloader specifically has ftp, http, and > telnet. The application has ftp, http, telnet, AND snmp. So other than > snmp, these two projects are nearly identical. > > The issue I'm having is that when I jump from my bootloader to my > application, lwip crashes my board. The initialization works perfectly > fine, but when I try to ping the board, go to the built in web page, or try > snmp, etc. it completely locks up my board and I am forced to hit the reset > button. What's more interesting is that when I turn on one of the built in > printf debug statements, it prints messages for random traffic. Along with > that, if I turn multiple debug options on, aka, cluttering my console with > debug print statements, my application works exactly as intended, just with > a very high ms (around 60+ when it should be <1). > > Just to clarify, my bootloader is working exactly as intended with lwip. > The webpage works, I can ping the board, and use telnet. My application is > exactly the same as my bootloader, it just has snmp added on and a few > minor > changes (none that would break lwip since they are unrelated). > > Any ideas? What steps could I take to resolve this issue? I'm not sure if > this is a problem with my lwip settings in my application somehow, or an > issue with something else. I find it very strange that lwip on my > bootloader works perfectly yet the lwip on my application does not. > > Thanks, Nick > > > > -- > View this message in context: > http://lwip.100.n7.nabble.com/Bootloader-to-Application-lwip-crash-tp29489.html > Sent from the lwip-users mailing list archive at Nabble.com. > > _______ > lwip-users mailing list > lwip-users@nongnu.org > https://lists.nongnu.org/mailman/listinfo/lwip-users > -- Pozdrawiam, Krzysztof Wesołowski +48 721 337 238 ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] LWIP_RAND in dns.c
> > #ifndef DNS_RAND_TXID > #if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_XID) != 0) > #define DNS_RAND_TXID *LWIP_RAND* >From reading code above I would guess it is required when both LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_XID are defined, so why are you defining them? Regards, Krzysztof Wesołowski ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] memory management
Just to continue with off-topic :)
AFAIK all solution are toolchain specific, for GCC we use:
#define MEMORY_EXSRAM1_ORIGIN 0x6000
#define MEMORY_EXSRAM1_LENGTH 4194304 /* 4M */
#define MEMORY_EXSRAM1_ATTRIBUTE __attribute__((section(.exsram1)))
And in linker script:
.exsram1 (NOLOAD) :
{
. = ALIGN(4);
__exsram1_start = .;
*(.exsram1);
__exsram1_end = .;
} EXSRAM1
PROVIDE(__exsram1_start = __exsram1_start);
PROVIDE(__exsram1_end = __exsram1_end);
We don't initialize data there (so only bss style variables are stored),
but multiple memory buffers go there and in long term its much easier for
us to maintain than fixed memory map.
Pozdrawiam,
Krzysztof Wesołowski,
tel. +48 721 337 238
On Fri, Aug 21, 2015 at 4:45 PM, Sergio R. Caprile scapr...@gmail.com
wrote:
It's much safer to integrate this with linker script (for example
with attributes on gcc). Casting number to pointer does not
guarantee that other variable will no be placed in the same area (by
linker or other Dev using such tricks). Happy debugging when it
happens :)
Yes.
However, in this particular example, since by definition of external
memory there is no on-chip memory at that location, the linker will not
assign any variable to that memory space. As for other Devs... well,
let's say all developers know the external memory map...
Had that double allocation happening once when toying with fixed
addresses in internal memory though, don't remember what I was doing and
why I did that... Nice pointing that out anyway!
AFAIK there is no CMSIS way of assigning segments, is it ? (but that is
completely off-topic)
--
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Re: [lwip-users] freertos + lwip = no uart ?
Hello, first thing first - i have no experience with XMEGA, but have learned many things about STM32 - sometimes the hard way :) If adding LWIP without initialization (you written it is only compiled, not initialized, so basically adding global variables (sections .data /.bss) and not called code (sections .text)) alters your system behavior IMHO you are in realatively deep voodo programming, and not tracking root of the problem would probably hit you later. Teoretically adding new code can also replace so called weak references to interrupt handlers (so for example addin LWIP can change ETH IRQ handler), but if this IRQ is disabled it shoudl not change anything. Are you using debugger so you can track values in variables/registers to check UART registers when app is not working?? Are you sure your linker script has correctly configured memory areas (if so extra variables will cause link time section overflow information, if linker has bigger memories than MCU some variables are not actually store'able/readable). If you use dynamic memory allocation are you sure that: a) there is enough memory in FreeRTOS heap? b) if other parts of code (linke printf) call malloc do you use wrapper redirecting malloc to FreeRTOS heap / are you sure that you malloc implementation is ok and works with linker script? I have also have seen some linker scripts where heap is happily growing from other end of RAM (and _sbrk and malloc are used), waiting from stacks to come other way - it is rather ticking timebomb :) Do you have ASSERT configured in FreeRTOS so you can detect misconfigurations? Basically there is 98% chance (2% is for you calling LWIP without knowing) that at the moment UART is working by luck/accident :) Regards, Krzysztof Wesołowski ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] lwip-1.4.1 assert-- file:tcp_out.c line: 445
AFAIR there was bug in oversize related code, i have used 1.4.1 with oversize disabled (after encountering this assert) without problems, and it is resolved in current master. Regardsm, Krzysztof Wesołowski On Thu, Jun 18, 2015 at 9:50 AM, jo.van.montfo...@telenet.be wrote: An assert gets triggered on following line in tcp_out.cLWIP_ASSERT(unsent_oversize mismatch (pcb vs. last_unsent), pcb-unsent_oversize == last_unsent-oversize_left); TCP_OVERSIZE = TCP_MSSTCP_MSS = 1460 ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] memory leak ?
I would just suggest that if you have RTOS, tasks/threads, queues etc then
using netconn/socket API might be better choice (they use message passing,
queues and semaphores to make programming easier, and I think that using
tcpip_callback tcpip_callback_with_blocking to reimplement this
functionality should be considered after trying to use multithreaded APIs).
Regards,
Krzysztof Wesołowski,
tel. +48 721 337 238
On Thu, Jun 4, 2015 at 2:34 PM, Jan Menzel men...@peperoni-light.de wrote:
Hi Noam!
From earlier discussion on this list, I learned that for this
purpose
one may schedule a callback into the LWIPs internal task using
tcpip_callback() or tcpip_callback_with_blocking(). Both queue your
function and its arguments for execution from within the main Lwip task
context. I'm not sure if this is applicable here, but if so, I would
favour the callback solution as yours might introduce dead locks in case
tcp_sndbuf() blocks. This type of errors are comparably difficult to
find and likely to happen if eg. an other task is used to free buffers
after transmission completed.
Jan
On 04.06.2015 14:18, Noam weissman wrote:
Hi,
PROBLEM SOLVED :-)
As mentioned earlier by Sergio we should not call LwIP code from within
other threads.
I must call tcp_write and other functions from a separate thread. This
is the implementation.
My TCP stack has the highest task priority in the system. As a result
calling tcp_write or any other
LwIP function may cause unpredictable LwIP internal code problems.
I added taskENTER_CRITICAL(); and taskEXIT_CRITICAL();
Function calls to the portion of code that call tcp_write etc.. this
synchronizes the threads
Interaction and solved the problem I faced completely.
For example:
taskENTER_CRITICAL();
{
AvailableSpace = tcp_sndbuf(ts-pcb);
}
taskEXIT_CRITICAL();
Thanks for your insight.
BR,
Noam.
-Original Message-
From: lwip-users-bounces+noam=silrd@nongnu.org
[mailto:lwip-users-bounces+noam=silrd@nongnu.org] On Behalf Of
Sergio R. Caprile
Sent: Thursday, June 04, 2015 12:02 AM
To: lwip-users@nongnu.org
Subject: Re: [lwip-users] memory leak ?
Tx: yes
Rx: if you free them properly then they shouldn't be scarce. Have you
tested this ?
I'm not familiar with lwIP under RTOS except that you must adhere to the
general rule of not calling the stack from different threads.
You should check your port with a known good application first. Try
echo, for example, or netio; both are available in the contrib tree (and
there is nice patch for netio sent by youknowho)
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Re: [lwip-users] dns_gethostbyname
On Tue, May 5, 2015 at 11:27 AM, Sandra Gilge sgi...@adatis.com wrote: Hallo Christoph, I think the tcpip_callback_with_block is the right solution for me. Many thanks for that hint. But I wonder how I can pass several parameters to dns_gethostbyname then. Is it done in a struct? Dns_gethostbyname has four parameters: dns_gethostbyname (const char *hostname, struct ip_addr *addr, dns_found_callback found, void *callback_arg) As far as I understand a message is sent to tcpip_thread with functionpointer and pointer to parameter as payload of that message. Hello, Yes you can use struct to pass multiple arguments via void * argument. struct can be global or dynamically allocated, or if you use blocking version ( tcpip_callback_with_block (,,1)) you can place struct on stack in calling thread. Regards, Krzysztof Wesolowski ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] dns_gethostbyname
Hi there, What do you mean with You can however post your callback to be executed on lwip thread? What callback do you talk about, the callback function that is given as parameter in the dns_gethostbyname? both netconn api and socket api use raw api under the hood, those APIs handle inter thread communication for you. You can do something similar if you need to execute code on tcpip_thread from your code. Just use function: tcpip_callback_with_block This function simply takes function pointer, void * argument (to pass additional context to your function if it is needed), and uses RTOS mechanisms to execute in on tcpip thread (extra argument determines if current thread will block until execution on tcpip thread completes). You need to prepare your own functions: - one responsible for starting request, which will call dns_gethostbyname and will be passed to tcpip_callback_with_block, - one responsible for handling result of request, passed to dns_gethostbyname. This function will be called by dns code on tcpip thread when requests completes. Unfortunately I do not have sample at hand. Regards, Krzysztof Wesołowski ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] dns_gethostbyname
On Thu, Apr 30, 2015 at 10:37 AM, Sandra Gilge sgi...@adatis.com wrote: It is stated that dns_gethostbyname is for the raw-api. Is there a reason to use it in combination with sockets? Is there a thread safety issue? AFAIR dns_gethostbyname uses other tcpip thread only components, so using it from outside this thread can be unsafe. You can however post your callback to be executed on lwip thread - it is usually sufficient (we use similar patter to handle incoming udp data via callback in tcpiip thread instead of blocking with netconn). Regards, Krzysztof Wesołowski ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] Fwd: question about using master/head instead of 1.4.1
As it is open source project, and master is pretty stable (we also use it in production, after encountering some issues with 1.4.1 which were fixed in master), consider community in your decision. Community will be better off you use, test, report bugs and improve current master, not some old, not maintained stuff. If you find bug in master we will be interested in solving it - because it affects our software and products. If you fix bug in master - devs would be happy to integrate it into master. If you pick code without community you will be basically responsible for any ongoing/needed maintenance. Regards, Krzysztof Wesołowski, ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] What is the best version of code to use for production
I will love to hear from current developers how they feel about current master stability, but we are successfully using lwip-master in our maintained and new projects - and if we encounter any problems they are driver, not lwip core related. Regards, Krzysztof Wesołowski On Fri, Jan 9, 2015 at 10:03 PM, Robert Deschambault robert.deschamba...@gmail.com wrote: Hi all, I notice that there have been a lot of fixes since the release of v1.4.1. Should we be looking at the latest fixes? Is a release coming soon? Thanks, Bob ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] CRC of each IP Header is not calculated after some point (STM32F4)
AFAIR STM32 requires place for HW calculated CRC to be zero initialized, so if outgoing buffer is corrupted (modified from zero) at some point it would break CRC calculation. On Sep 23, 2014 11:14 AM, Simon Goldschmidt goldsi...@gmx.de wrote: Michael Steinecke wrote: But from one point on, the CRC calculation for all outgoing packets fails or is not executed entirely. [..] CRC calculation is done by HW (SW calculation in LwIP turned off), therefore I would expect another STM bug. Is there something known? Some ideas how to track down this? I guess you mean checksum, not CRC. Have you tried disabling hardware checksum calculation? That would be an ideal way to see if it's the hardware driver or another problem. Simon ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] TCP retransmission flooding at end of stream
I need to achieve a throughput of at least 2 MBit/s, according our requirements. Due to the HW this should be possible. I am not sure why you decided to go in such extreme direction with your changes. We are almost able to saturate 100MBit connection (8 MB/s) and upload about 2MB/s from SD Card on STM32F407 with RMII attached PHY (Some Micrels KSZ...) Are you using some WiFi in your setup? With Ethernet networks we only needed to tune memory in lwipopts, and there was no need to change types and/or polling interval. Have you benchmarked if the need for optimization really is within LwIP related code? Regards, Krzysztof Wesołowski, ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] packet order with tcp_recv
I think that without this flag out of order packets are dropped, TCP stream with out of order packets will be completely unusable. Regards, Krzysztof Wesołowski On Wed, Sep 10, 2014 at 8:43 AM, Richner Simon simon.rich...@psi.ch wrote: I think I found the answer in the lwip options: /** * TCP_QUEUE_OOSEQ==1: TCP will queue segments that arrive out of order. * Define to 0 if your device is low on memory. */ I didn't analyze the code, but to my understanding this means: If this flag is set (default), then lwip will queue out of order segments and wait for the missing segment, before calling tcp_recv. In this case the application doesn't need to worry about out of order packets. Please let me know if I'm mistaken. Cheers, Simon -Ursprüngliche Nachricht- Von: lwip-users-bounces+simon.richner=psi...@nongnu.org [mailto: lwip-users-bounces+simon.richner=psi...@nongnu.org] Im Auftrag von Radouch, Zdenek Gesendet: Dienstag, 9. September 2014 19:20 An: Mailing list for lwIP users Betreff: Re: [lwip-users] packet order with tcp_recv Packets will be received in the order they were sent. No, TCP packets are IP datagrams that can be lost, duplicated, or that can arrive out of order. That is, they won't necessarily arrive in the order they were sent. The TCP input module (tcp_in.c) does the necessary ordering (it either passes the packet to the user or queues it to be passed in later) and Simon's question is whether the tcp_recv callback is delivering packets in order they were received or in a sorted order (the reconstructed data stream). Unfortunately I am not familiar with that callback so I don't know the answer :-(. Cheers, -Z -Original Message- From: lwip-users-bounces+zradouch=irobot@nongnu.org [mailto:lwip- users-bounces+zradouch=irobot@nongnu.org] On Behalf Of Noam weissman Sent: Tuesday, September 09, 2014 11:49 AM To: Mailing list for lwIP users Subject: Re: [lwip-users] packet order with tcp_recv Hi, In TCP there should not be such an issue. Packets will be received in the order they were sent. TCP is a stream. BR, Noam. -Original Message- From: lwip-users-bounces+noam=silrd@nongnu.org [mailto:lwip-users-bounces+noam=silrd@nongnu.org] On Behalf Of Richner Simon Sent: Tuesday, September 09, 2014 3:30 PM To: Mailing list for lwIP users Subject: [lwip-users] packet order with tcp_recv Hi all, I have a basic question about tcp_recv: Let's say I have some MBs of data I send to the lwip stack. If (for whatever reason) tcp packets arrive out of order, will the stack sort this out for me and call the tcp_recv callback with packets sorted in correct order? Or do I have to check the sequence number myself to make sure I put data back together in correct order? Thanks for your help Simon ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ** * * This footnote confirms that this email message has been scanned by PineApp Mail-SeCure for the presence of malicious code, vandals computer viruses. ** * * ** * * This footnote confirms that this email message has been scanned by PineApp Mail-SeCure for the presence of malicious code, vandals computer viruses. ** * * ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] ping flood crash
It rather seems that your hardware driver is not protected. LwIP core does not care about you RX fifo, interrupts etc. Regards, Krzysztof Wesołowski ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] Multi-threaded socket access once again
Hi, We used LwIP in similar scenario, but with one task responsible for this socket/netconn. Using internal RTOS queues to pass data to this single task was relatively simple, and all multitasking problems were avoided. Are there any reasons you cannot use this socket in single thread with external mechanism for aggregating data from multiple senders? Fabian, I guess this can be implemented in LwIP in a way to allow such use scenario, but wouldn't it be extra code to test/maintain for current maintainers? Regards, Krzysztof Wesołowski ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
[lwip-users] Data buffering before calling netcon_write
Hello, I am using code similar to std::ostream, writing to open TCP connection. Without buffering (calling netconn_write for each small data chunk), performance was an issue, so i implemented simple buffer (over 1kB) to write data to buffer first, and when buffer is full call netconn_write. I was considering if i can avoid this extra copy, by pre-allocating sth like pbuf - filling it and then passing to lwip stack, but it seems tcp connections only support copy based approach. Am i right or have I missed something? Regards, Krzysztof Wesołowski, ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] lwip with fatfs on a STM32 speed problem
What performance do you achieve when sending random data from flash instead
of reading it from FAT FS? Have you measured which module is responsible
for this speed?
Regards,
Krzysztof Wesołowski
On Tue, Jan 28, 2014 at 8:23 AM, Noam weissman n...@silrd.com wrote:
Hi Dave,
Attached please find the low level driver I used. This is a bit modified
driver
based on inputs I found over the net.
Try to use it and see if it is better for you.
BR,
Noam.
-Original Message-
From: lwip-users-bounces+noam=silrd@nongnu.org
[mailto:lwip-users-bounces+noam=silrd@nongnu.org] On Behalf Of Dave
Sandl
Sent: Tuesday, January 28, 2014 5:10 AM
To: lwip-users@nongnu.org
Subject: [lwip-users] lwip with fatfs on a STM32 speed problem
Hi,
I am having problems getting good speed results on sending files using a
stm32 with fatfs files system.
I can only get max of around 2.5kBs on a image download.
My server and file system seem to work fine, here are the specs
STM32F4discovery with the ethernet/sdcard baseboard from element14
I used the ST supplied drivers for both lwip and fatfs to create a raw
api basic server.
Here is the relevant code sections, any help would be appreciated.
If I increase the sd_read_buff to 1024 or higher is does not send the
file correctly (not sure what to do here or if it should be bigger?)
#define sd_read_buff 512
struct http_state
{
FIL fileFS;
char *file;
u32_t left;
uint8_t buff[sd_read_buff];
};
static void send_data(struct tcp_pcb *pcb, struct http_state *hs)
{
err_t err;
FRESULT ret;
u16_t len;
uint br;
uint temp1 = tcp_sndbuf(pcb);
if(tcp_sndbuf(pcb) sd_read_buff)
len = tcp_sndbuf(pcb);
else
{
if(hs-left sd_read_buff)
len = hs-left;
else
len = sd_read_buff;
}
ret = f_read(hs-fileFS, hs-buff, len, br);
if(ret == FR_OK){
err = tcp_write(pcb, hs-buff, br, 0);
if (err == ERR_OK)
{
if(br len)
hs-left = 0;
else
hs-left -= br;
}
}
}
static err_t http_sent(void *arg, struct tcp_pcb *pcb, u16_t len)
{
struct http_state *hs;
hs = arg;
if (hs-left 0)
{
send_data(pcb, hs);
}
else
{
f_close(hs-fileFS);
close_conn(pcb, hs);
}
return ERR_OK;
}
static err_t http_recv(void *arg, struct tcp_pcb *pcb, struct pbuf *p,
err_t err)
{
int32_t len=0;
char *data;
struct http_state *hs;
hs = arg;
if (err == ERR_OK p != NULL)
{
/* Inform TCP that we have taken the data */
tcp_recved(pcb, p-tot_len);
if (hs-file == NULL)
{
data = p-payload;
len = p-tot_len;
/* process HTTP GET requests*/
if (strncmp(data, GET /index.htm, 10) == 0)
{
FIL file;
FRESULT ret;
hs-fileFS = file;
ret = f_open(hs-fileFS, index.htm, FA_READ);
if(ret == FR_OK)
{
pbuf_free(p); // Free the receive data
hs-left = f_size(hs-fileFS);
send_data(pcb, hs);
tcp_sent(pcb, http_sent);
}
else
{
tcp_write(pcb, file_error, sizeof(file_error), 0);
pbuf_free(p);
close_conn(pcb, hs);
}
}
else if (strncmp(data, GET /pic.jpg, 12) == 0)
{
FIL file;
FRESULT ret;
hs-fileFS = file;
ret = f_open(hs-fileFS, pic.jpg, FA_READ);
if(ret == FR_OK)
{
pbuf_free(p); // Free the receive data
hs-left = f_size(hs-fileFS);
send_data(pcb, hs);
tcp_sent(pcb, http_sent);
}
else
{
tcp_write(pcb, file_error, sizeof(file_error), 0);
pbuf_free(p);
close_conn(pcb, hs);
}
}
else
{
tcp_write(pcb, http_index_html, sizeof(http_index_html), 0);
pbuf_free(p);
close_conn(pcb, hs);
}
}
else
{
pbuf_free(p);
close_conn(pcb,hs);
}
}
if (err == ERR_OK p == NULL)
{
close_conn(pcb, hs);
}
return ERR_OK;
}
void IAP_httpd_init(void)
{
struct tcp_pcb *pcb;
/*create new pcb*/
pcb = tcp_new();
if (!pcb)
{
return ;
}
/* bind HTTP traffic to pcb */
tcp_bind(pcb, IP_ADDR_ANY, 80);
/* start listening on port 80 */
pcb = tcp_listen(pcb);
/* define callback function for TCP connection setup */
tcp_accept(pcb, http_accept
Re: [lwip-users] missing TX packets
I dont know how MAC operates in this particular CHIP, but in STM32 you can select to either transmit frames directly from memory (using FIFO as temporary buffer) or in store and forward mode when complete frame is gatheren in FIFO and sent as a whole from FIFO. Maybe you have similar settings, and change to more buffered mode will be solution? have you checked underrun flags (if they are available) to detect if tihs is a source of problem? Regards, Krzysztof Wesolowski On Wed, Jan 1, 2014 at 8:13 AM, Lehel Benedek artshadow2...@gmail.comwrote: Hello, I'm using an SBC1788 board with an LPC1788 micro controller and successfully implemented a web server based on lwIP v1.4.1 with FreeRTOS v7.4.2. I am using zero copy TX buffers located in the external SDRAM, the performance is quite good (the webpage of 600KB (also buffered in the external SDRAM) gets loaded up in less than 1sec), and was working flawlessly, until I added emWin to the project. Using the embedded LCD controller from the LPC1788 and the video buffers also located in the external SDRAM I got also the LCD and touchscreen working, however I notice that the web-server was no longer working. After some debugging I found the following: - the problem with the web-server is that some TX packets are not sent out at all, although the frame transmission gets correctly called, so from 100 packets only around 70-80 are sent out - the only thing that will cause this problem is the LCD power control. When I enable power to the LCD controller the problem is there, if I disable power to the LCD controller it's gone. I'm guessing it could be a conflict between the Ethernet chip and LCD controller both accessing the external SDRAM through DMA, but I have no idea on how to proceed. I tried different AHB matrix priority settings, without any success. Any thoughts on this? ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] Size of ARP Response too much 1534 bytes, packet contains lots of 0xA5 values
In my small embedded world, lot 0xA5 and FreeRTOS implicates problem with stack size (too small stack, overflow and magic happens). If you are using FreeRTOS try changing FILL BYTE to sth different to confirm this extra data comes from unused stack space. Pozdrawiam, Krzysztof Wesołowski, tel. +48 721 337 238 On Fri, Oct 25, 2013 at 5:26 AM, Ishmeet ishmeetsing...@gmail.com wrote: Size of ARP Response too much 1534 bytes, packet contains lots of 0xA5 values. ARP Request is 64 bytes which is ok. Has any one faced this before -- View this message in context: http://lwip.100.n7.nabble.com/Size-of-ARP-Response-too-much-1534-bytes-packet-contains-lots-of-0xA5-values-tp21988.html Sent from the lwip-users mailing list archive at Nabble.com. ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] Low Iperf performance of lwip 1.4.1 on STM32 and FreeRTOS
We put 25MHz HSE to STM32F4, then forward same clock from MCO to micrel phy and then use micrels 50MHz for RMII. On Jul 2, 2013 8:50 PM, Jeff Barlow j...@wb6csv.net wrote: On 7/2/2013 4:50 AM, Claudius Zingerli wrote: In the final design, we plan use a 3-port switch from Micrel. It can be clocked from 25MHz or 50MHz, but the board I'm using to develop the software has a DP83848 that does need a 50MHz clock source for RMII. STM32F4 /might/ be able to handle 50MHz as a main clock source. I see. For a one-off dev board I think it's always less frustrating to just use a separate 50MHz oscillator. The older PHY chips can be really fussy about clock jitter. I think once you get away from that DP83848 you'll find things less painful. I was just suggesting using the Micrel RMII clock output to feed the RMII clock input on the MCU. I've never tried feeding a 50MHz clock into the HSE on a STM32F407 but it strikes me as risky. I do seem to recall that some of the PHYs also have a direct 25MHz output that would work for that. Don't know if that includes your switch chip, however. -- Later, Jeff __**_ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/**mailman/listinfo/lwip-usershttps://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] a question!?
After all, I think there should not be many packets processed uselessly if the MAC filters them out correctly. Exactly - nowadays when we use switches, most of traffic is either unicast adressed to our device or broadcast. Regards, Krzysztof ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] Blocking netif_linkoutput
I don't know where the idea came from, but that sempaphore is not necessary. This semaphore is usually given in some TxCompleted interrupt (synchronization), so call to linkoutputs block for only as long as neccesary. Regards, Krzysztof Wesolowski ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] TCP_MSS questions
It is probably a logical explanation for the behavior I see with different TCP_MSS settings. Its quick guess, but some other parameters are calculated using TCP_MSS, so maybe (just for example) windows size affects behavior? Go throuth lwipopts.h and opts.h looking where TCP_MSS is also used, meybe something will pop-up. Regards, Krzysztof Wesołowski, ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] Problem with fragmented TCP packets using slow 3G connection
lwIP - maybe that case with embedded device, router and slow 3G network is rare and lwIP dont handle it proprely. I use FreeRTOS 7.2 and lwIP 1.4.0 with socket API. I use LwIP 1.4.1 and netconn API, allowing for example to remotely dump flash image of STM32F4 (1MB) over EDGE router so slow connection is not problem for LwIP itself - i was actually impressed that it works so well. Maybe something is not well tuned in lwipopts - have you tried to enable debug messages in lwip to see if there is no memory issue? AFAIK lwip 1.4.0 compatible driver is also compatible with 1.4.1, so consider upgrading - it is usually less to look for with more bugs fixed :) I had some issues due to watchdog (as downloading 1MB can take a few minutes), and i used switch with port speed limited to few Kbps to test it locally. Regards, Krzysztof Wesołowski, ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] Correctly manage cable disconnection and reconnection
In similar case with freertos i created timer to poll phy and called netif set link down on disconection and up on connection. It works well, even tcp ip connections can last through temporal disconnection. On Dec 8, 2012 8:09 AM, CORRADIN Michele michele.corra...@socomec.com wrote: Hi, I'm new to LWIP and I'm trying to use it on a a board with an STM32F407 under ucOS III. I have just ported LWIP on ucOS III based on a project I found online, I fixed a couple of bugs and I make it running with fix IP and DHCP. The MAC driver is based on the ST one with some modifications for my micrel PHY. It seems to work fine but I have some problems to correctly manage cable disconnection and re-connection. Up to now I created a slow task that checks the PHY register to verify the connection status and if I see a cable disconnection and re-connection I restart the phi init in order to correctly set speed, .. but it's not clear to me what I should do to re-init LWIP. Un to now I'm doing nothnig and it seems it work 80% of the time .. but sometimes it seems it's not able to correctly restart. I'm just trying with a ping to see what happens. thanks for the support michele This message and any attachments are established exclusively for his or its recipients, and are confidential. Any use, diffusion or unauthorized publication is prohibited. Please notify the sender immediately by email if you have received this email by mistake and delete this email from your system. SOCOMEC declines all responsibility concerning this message if it has been altered or tampered with. It normally contains no virus, but it is the responsibility of the recipient to ensure this. Please note that any views or opinions presented in this email are solely those of the author and do not necessarily represent those of the organization. Ce message et ses éventuelles pièces jointes sont établies à l'intention exclusive de son ou de ses destinataires et sont confidentiels. Toute utilisation, diffusion ou publication non autorisée est prohibée. Merci d’informer immédiatement l’auteur par retour de message si vous avez reçu ce message par erreur, et supprimez ce message. SOCOMEC décline toute responsabilité au titre de ce message s'il a été altéré ou falsifié. Il ne contient normalement aucun virus, mais il est de la responsabilité de son destinataire de s'en assurer. L’organisation décline toute responsabilité en ce qui concerne les informations fournies et les avis exprimés dans le présent message. ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] how to detect cable down in this case
Lwip is just network a stack, it does not interact with physical medium directly. In ethernet application usually (always?) PHY i responsible for link up/down, negotiation, mode configuration etc. So your driver must detectrelated events and/or check state, and report it to LwIP. Regards, Krzysztof Wesołowski, On Tue, Aug 21, 2012 at 9:42 PM, vincent cui vincent@enlogic.com wrote: Hi: When internet cable is plugged into board, but another side is plugged out Slotn how lwip know that the cable is down? Vincent ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] how to detect cable down in this case
On Tue, Aug 21, 2012 at 10:38 PM, Bill Auerbach bauerb...@arrayonline.com wrote: I think he means if you are connected to a switch and the connection to another device on the switch is removed. In this case there is no loss of link since the switch maintains that but there is a loss of connection. Now I see, i have to often used config when other end was other end of physical cable ;) There where sevaral topics about detecting connection break, with techniques like Keep-Alive Packets mentioned. TCP/IP itself is capable of delivering packets in connection even when physical link was down between them, sothere is no simple/ultimate other plug out on this layer. Regards, Krzysztof Wesołowski ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] how to detect cable down in this case
Please, specify your topology (devices/switches/hubs/routers/etc, which one is lwIP) and tell us what you mean by unpluging another side. Keep Alives are sent between hosts, so L2/L3 devices are usually transparen to them. Regards, Krzysztof Wesołowski, On Tue, Aug 21, 2012 at 11:06 PM, vincent cui vincent@enlogic.com wrote: You mean that I have to send keep-alive packet to switch and hub to get response ? if no response, it should be break up ? -Original Message- From: lwip-users-bounces+vincent.cui=enlogic@nongnu.org [mailto:lwip-users-bounces+vincent.cui=enlogic@nongnu.org] On Behalf Of Krzysztof Weso?owski Sent: 2012年8月22日 4:44 To: Mailing list for lwIP users Subject: Re: [lwip-users] how to detect cable down in this case On Tue, Aug 21, 2012 at 10:38 PM, Bill Auerbach bauerb...@arrayonline.com wrote: I think he means if you are connected to a switch and the connection to another device on the switch is removed. In this case there is no loss of link since the switch maintains that but there is a loss of connection. Now I see, i have to often used config when other end was other end of physical cable ;) There where sevaral topics about detecting connection break, with techniques like Keep-Alive Packets mentioned. TCP/IP itself is capable of delivering packets in connection even when physical link was down between them, sothere is no simple/ultimate other plug out on this layer. Regards, Krzysztof Wesołowski ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] how to detect cable down in this case
So, assuming that cable is only passive copper physical medium:) there is no difference which side of cable is unplugged - PHY device will report link down. Regards, Krzysztof Wesołowski, On Tue, Aug 21, 2012 at 11:12 PM, vincent cui vincent@enlogic.com wrote: Actually, I always plug in cable another side in wall, I think it is connected into some switch or hub .. But anyway , I really don't know what type the customer use. -Original Message- From: lwip-users-bounces+vincent.cui=enlogic@nongnu.org [mailto:lwip-users-bounces+vincent.cui=enlogic@nongnu.org] On Behalf Of Krzysztof Weso?owski Sent: 2012年8月22日 5:12 To: Mailing list for lwIP users Subject: Re: [lwip-users] how to detect cable down in this case Please, specify your topology (devices/switches/hubs/routers/etc, which one is lwIP) and tell us what you mean by unpluging another side. Keep Alives are sent between hosts, so L2/L3 devices are usually transparen to them. Regards, Krzysztof Wesołowski, On Tue, Aug 21, 2012 at 11:06 PM, vincent cui vincent@enlogic.com wrote: You mean that I have to send keep-alive packet to switch and hub to get response ? if no response, it should be break up ? -Original Message- From: lwip-users-bounces+vincent.cui=enlogic@nongnu.org [mailto:lwip-users-bounces+vincent.cui=enlogic@nongnu.org] On Behalf Of Krzysztof Weso?owski Sent: 2012年8月22日 4:44 To: Mailing list for lwIP users Subject: Re: [lwip-users] how to detect cable down in this case On Tue, Aug 21, 2012 at 10:38 PM, Bill Auerbach bauerb...@arrayonline.com wrote: I think he means if you are connected to a switch and the connection to another device on the switch is removed. In this case there is no loss of link since the switch maintains that but there is a loss of connection. Now I see, i have to often used config when other end was other end of physical cable ;) There where sevaral topics about detecting connection break, with techniques like Keep-Alive Packets mentioned. TCP/IP itself is capable of delivering packets in connection even when physical link was down between them, sothere is no simple/ultimate other plug out on this layer. Regards, Krzysztof Wesołowski ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] implementing device driver: netif events handling
2. Link change events initiated by driver are not thread-safe. Wiki page http://lwip.wikia.com/wiki/Writing_a_device_driver#Link_change_events claims that driver should use netif_set_link_up/netif_set_link_down functions. But they manipulate netif flags directly. Moreover, they directly call several lwip processing functions leading to execute them in driver thread context. While multiple ports use separate thread for packets input, it is not the only way LwIP can work. If yor driver operates in tcp_ip thread there is no need for it to be thread safe. If u use separate threa thera are netifapi_* variants of functions which uses messages with call back to pass execution to tcpip thread. I have modified some sample STM32 driver, added extra maintenance timer to check PHY/Link status and I execute it with timers inside tcpip thread. So called driver context is not the one and only solution - and especially TX is usually handled directly in tcpip thread. Regards, Krzysztof Wesołowski ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] how to upload file to web server
I develop a webserver with lwIP. Now, I need upload a file from PC to server by web. Do I use GET or POST method to do that ? If you want to upload via web panel you use POST with mime type multipart/form data. Implement it or wathc on some working serwer and use wireshark to see basics ;) Regards, Krzysztof Wesołowski, ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] how to upload file to web server
I am receiving POST data with netconn api, its matter of reception logic, not used api. You must add POST request support to your server, starting with initial request line and using content sent after headers. I have written my own server, started with form upload (simple text data in request body). Then implemented file upload. Basically by watching data send by browser in wireshark and reading about HTTP. Regards, Krzysztof Wesołowski, On Thu, Jul 26, 2012 at 12:24 PM, vincent cui vincent@enlogic.com wrote: Hi Krzy: I want to upload via web panel use POST with mime type . but my server can't capture the POST request in HTTP protocol. The web server is developed with SOCKET api, not RAW API As you mean, I need receive file by RAW api once press upload button ? Vincent -Original Message- From: lwip-users-bounces+vincent.cui=enlogic@nongnu.org [mailto:lwip-users-bounces+vincent.cui=enlogic@nongnu.org] On Behalf Of Krzysztof Weso?owski Sent: 2012年7月26日 18:04 To: Mailing list for lwIP users Subject: Re: [lwip-users] how to upload file to web server I develop a webserver with lwIP. Now, I need upload a file from PC to server by web. Do I use GET or POST method to do that ? If you want to upload via web panel you use POST with mime type multipart/form data. Implement it or wathc on some working serwer and use wireshark to see basics ;) Regards, Krzysztof Wesołowski, ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] Making the HTTP server working with RAW API
Whenever I am connecting to the host IP I am downloading a file attached to this email instead of visualizing the actual data. Use wireshark to check headers sent by your server, probably Content-Type is not send properly. Regards, Krzysztof Wesołowski ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] Embedded web page access needs refresh with Google Chrome
On Wed, Jul 25, 2012 at 3:20 PM, Daniel Goertzen daniel.goert...@gmail.comwrote: Hmm. In the not-loaded file the web server is definitely replying. One thing that looks weird is that the webserver is replying with giant TCP packets consisting of many fragments. It appears to work, but my understanding is that the packet size should be below MTU. By huge you mean 1514? I am also seeing some bad checksum (with bad value, not simply offloaded 0x). I have encountered similar problem few weeks ago, but I did not solved it - it stopped hapenning when i stopped sending small chunks of data (i use netconn_write without oversize enabled, so i just added another buffering layer to stop sending super short packets occupying whole pbuf each). Reported packets sizes were similar so it might help :/ Regards, Krzysztof Wesołowski ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] select issue
I develop SSH server with LWIP SOCKET, and I can connect it with PUTTY client tool. After connect ok, SSH server trigger a internal SHELL to accept commands user input. But I found a strange problem about reconnection, that is close the PUTTY by press windows right upper X button to disconnect SSH server first, then rerun PUTTY tool to connect SSH server, it can connect successfully, but repeat above operation 3 times. Connection fail in SELECT functions , Any one know that ? I am not sure, but afair closing putty with X does not close session completely - do you have warning about memory pools enabled and they are not showing up during problems? Repeating it 3 times may mean just use all available resources, so no new connection can be processed. Regards, Krzysztof Wesołowski, ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
[lwip-users] Handling link-up/down, netif-up/down events in LwIP
Hi there, I am working on device using LwIP to host simple WebPanel. I am using STM32F4x with FreeRTOS, and I have started with ST's driver and code - they basically make netif_up and link_up at the beginning, assuming that connection will be succesfully initialized. However, i would like to gracefully close what I can when plug is disconeccted and reestablish connection when link is back. Currently I am doing it this way: At the beginning of program i init TCPIP, bring stm32 netif up, and setup link maintenence timer (so code is periodically called from lwip thread). In maintenence timer code i jump through simple state machine: 1 stm32_lwip_driver_state_power_up, 2 stm32_lwip_driver_state_waiting_for_link_up, 3 stm32_lwip_driver_state_auto_negotiating, 4 stm32_lwip_driver_state_mac_dma_confgured_for_link At power up if cable is ok states are 1-2-3-4. Entering state 4 calls netif_link_up. If cable is not connected we simply stay in state 2 (link is down). When cable gets disconnected during operation there is transition 4-2, netif_link_down_is called and we poll phy for connection. So there are following questions: 1. Is such scheme alright, thread safe (i use same thread)? 2. Any errors/problem i might encounter which are worth to know upfront? 3. Should netif stay up for whole program operation or should I call netif_set_down? 4. How listening and/or active connections made with netconn API would react to such event? 5. If i write own, simple etharp_output function to check link state before sending, which return code should be used if netif_link_is_down? Does this error will be simply forwarded to caller? should i Any other comments are welcome, device is designed to handle big uptimes, so I must eliminate or memory leak and/or crash risks I can. Reagrds, Krzysztof Wesołowski, ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] DHCP and AUTOIP cooperation
On Mon, Jun 25, 2012 at 3:48 PM, Funk, Artur artur.f...@iq-wireless.com wrote: The autoip code isn't included. It seems that lwiopts.h doesn't overwrites the setting in opt.h lwipopts.h is directly included by opt.h and configurations are guarded with #ifdefs to prevent redeclaration. You can for example: 1. enable -Wall to ensure that there is no redeclarations, 2. use #if/#ifdef with #error directive to check if symbol is defined and its value in certain point in source file. Maybe you have multiple lwipopts in include paths? Regards, Krzysiek ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] Need Help for Configuration for lwIP
Please suggest suitable lwip configuration for my application. Enable LwIP debug with level warning for memory buffers, and see whats happening on your debug channel - you will which buffer run out etc. While asking for good speed in both directions you must also consider host PC you are communicating with. Delays in receiving ACKs (and thus being unable to free buffer with data) due to computer load can easily change systems symmetric throughput from 3MB/s to 1MB/s. Regards, Krzysztof Wesołowski, ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] lwip fails for full duplex communication
On Tue, May 29, 2012 at 10:18 AM, lookwong look.wangl...@gmail.com wrote: I don't think lwip spports full duplex mode. I do not know what you mean by full duplex, but LwIP works fine for example echoing data, so the problem is probably in application Regards, Krzysztof Wesołowski, tel. +48 721 337 238 http://www.rainlabs.pl On Tue, May 22, 2012 at 12:36 PM, GICINDIA resea...@gicindia.com wrote: Hello Kieran, Thanx alot for the reply. If no. of pbufs is the issue then, to resolve this problem can i make MEMP_NUM_PBUF = 32? But, i did not understand lwip data transmit logic fully, if possible can u explain it? so that i can be able to implement some other logic for buffer handling at serial side before writing data into pbufs. Regards, Asma. Kieran Mansley wrote: It looks to me like you have 16 pbufs, each of size 256 bytes. Your TCP_WND is 2048, so you can have 2KB of data received and waiting for your application before the other end will stop sending. Your TCP_SND_BUF is 6KB, so you can have that much sent by your application waiting to go onto the wire. In total, this makes 8KB of buffering, but you only have enough pbufs to hold 4KB (16 * 256). I think this is why you're running out. Kieran ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users -- View this message in context: http://old.nabble.com/lwip-fails-for-full-duplex-communication-tp33862721p33886914.html Sent from the lwip-users mailing list archive at Nabble.com. ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users ___ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users
Re: [lwip-users] lwip performance goes down if running with FreeRTOS
I found root cause now , it is ST CORTEX M3 DMA problem when receive a
large of file..
I trace the code, after lwIP performance is down, the Rx Buffer
unavailable flag is always set. It means that DMA is in unknown status..**
**
** **
It should be enthernet driver problem ..anyone know how to fix ? thank you
I was working with STM32 Eth driver in last month, using manufacturer code
as a starting point. Most performance issues was easy to track with LwIP
debug configured on warning level - information about all pool and heap
running low are really useful.
Also in code:
/* Set Own bit in Rx descriptors: gives the buffers back to DMA */
for (i=0; iDMA_RX_FRAME_infos-Seg_Count; i++)
{
DMARxNextDesc-Status = ETH_DMARxDesc_OWN;
DMARxNextDesc = (ETH_DMADESCTypeDef
*)(DMARxNextDesc-Buffer2NextDescAddr);
}
Lines in for should be in different order - changing descriptor after you
released it to dma might cause extra problems.
When in despeir i put ASSERTS in IRQ code to check all status bits and
detet any problem.
My driver used MTU sized RX buffers so i did not have to take care of
linked descriptors with single frame.
Regards,
Krzysztof Wesołowski,
tel. +48 721 337 238
http://www.wrss.eaie.agh.edu.pl
http://www.integra.agh.edu.pl
http://www.rainlabs.pl
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Re: [lwip-users] lwip performance goes down if running with FreeRTOS
On Fri, May 11, 2012 at 8:46 AM, vincent cui vincent@enlogic.comwrote:
** **
HI :
** **
You use MTU SIZE as RX buffer, in ST code, it define RX buffer like
uint8_t Rx_Buff[ETH_RXBUFNB][ETH_RX_BUF_SIZE];
** **
So, you only set ETH_RXBUFNB to 1 ?
**
No, as in ST code i use ETH_RX_BUF_SIZE = MTU size and multiple buffers.
Hovewer in RX interrupt i can assume that only current buffer has been
filled.
It might be useful if you to attach ISR code and ETH_Get_Received_Frame_
interrupt();
Can you explain what this code do:
/* Check if received frame with multiple DMA buffer segments */
if (DMA_RX_FRAME_infos-Seg_Count 1)
{
DMARxNextDesc = DMA_RX_FRAME_infos-FS_Rx_Desc;
}
else
{
DMARxNextDesc = frame.descriptor;
}
Regards,
Krzysztof
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Re: [lwip-users] Detecting remote close when using netconn API
Can I make such non blocking read with already established connection?
Regards,
Krzysztof Wesolowski,
On Thu, Apr 12, 2012 at 2:03 PM, lwip-users-requ...@nongnu.org wrote:
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Today's Topics:
1. Detecting remote close when using netconn API
(Krzysztof Weso?owski)
2. Re: Detecting remote close when using netconn API (Kieran Mansley)
3. tcp_sndbuf return 0 when sending file (vincent cui)
--
Message: 1
Date: Thu, 12 Apr 2012 00:44:48 +0200
From: Krzysztof Weso?owski kwes...@kwesoly.net
To: lwip-users@nongnu.org
Subject: [lwip-users] Detecting remote close when using netconn API
Message-ID:
caprkjpbmoltt5jbzrpke25_ac1pwc8pnkcd220nlrarwacp...@mail.gmail.com
Content-Type: text/plain; charset=ISO-8859-2
Hi,
I am using netcon api in simple application. Device is a server
processing connections in loop, PC is a client. After PC establishes
connection we go into simple loop:
while (err == ERR_OK) {
if (streaming_enabled()) {
err = netconn_write(pc,sbuf, 1152, NETCONN_COPY);
}
vTaskDelay(1);
}
where pc is struct netconn *.
However if streaming is disabled, there is now way we can detect that
PC sent FIN and closed connection - so subsequent connection to same
port to server causes RST (we are still in inner loop so we cannot
accept next connection).
What can i do to detect that PC closed connection? I do not mean
Ethernet layer error and other hard do diagnose in few miliseconds
problems, rather typical situation with connection closed by PC.
Regards,
Krzysztof Weso?owski,
--
Message: 2
Date: Thu, 12 Apr 2012 09:44:45 +0100
From: Kieran Mansley kie...@recoil.org
To: Mailing list for lwIP users lwip-users@nongnu.org
Subject: Re: [lwip-users] Detecting remote close when using netconn
API
Message-ID:
1334220287.1609.4.ca...@kjm-desktop.uk.level5networks.com
Content-Type: text/plain; charset=UTF-8
On Thu, 2012-04-12 at 00:44 +0200, Krzysztof Weso?owski wrote:
What can i do to detect that PC closed connection?
The simplest way would be to do a non-blocking read from the connection.
If the PC has closed it in that direction, you will get an error.
Kieran
--
Message: 3
Date: Thu, 12 Apr 2012 07:09:48 +
From: vincent cui vincent@enlogic.com
To: Mailing list for lwIP users lwip-users@nongnu.org
Subject: [lwip-users] tcp_sndbuf return 0 when sending file
Message-ID:
32017c613ef61f42b30f94182979beb7d91...@server4.enlogic.com
Content-Type: text/plain; charset=us-ascii
All
I develop a FTP server with lwIP 1.3.2 in Cortex M3 platform, when I use
FlashFXP to get file from the server, the tcp_sndbuf always return 0 after
work a while .
I capture it with wireshark, the file is attached file. The server ip:
192.168.1.51. it seems that transfer error and need retransmission.
[Untitled.png]
My sendcode in server is below:
static void send_data(struct tcp_pcb *pcb, struct ftpd_datastate *fsd)
{
err_t err;
u16_t len;
int i;
if (sfifo_used(fsd-fifo) 0)
{
if (tcp_sndbuf(pcb) sfifo_used(fsd-fifo))
{
len = tcp_sndbuf(pcb); - the len is set 0 after work a while.
}
else
{
len = (u16_t)sfifo_used(fsd-fifo);
}
i = fsd-fifo.readpos;
if ((i + len) fsd-fifo.size)
{
err = tcp_write(pcb, fsd-fifo.buffer + i, (u16_t)(fsd-fifo.size
- i), 1);
if (err != ERR_OK)
{
return;
}
len -= fsd-fifo.size - i;
fsd-fifo.readpos = 0;
i = 0;
}
err = tcp_write(pcb, fsd-fifo.buffer + i, len, 1);
if (err != ERR_OK)
{
return;
}
fsd-fifo.readpos += len;
}
}
Who know how to solve ?
Vincent Cui
Software Engineer Leader
Mobile: +8613255150315
Tel: +86 21 34612525x6104
Fax: +86 21 34619770
E-Mail: vincent@enlogic.commailto:vincent.c...@enlogic.com
Shanghai EnLogic Electric Technology Co., Ltd.
Address: 1104-1106, Building A, No.391, Guiping Road, Xuhui District,
Shanghai, 200233
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[lwip-users] Detecting remote close when using netconn API
Hi,
I am using netcon api in simple application. Device is a server
processing connections in loop, PC is a client. After PC establishes
connection we go into simple loop:
while (err == ERR_OK) {
if (streaming_enabled()) {
err = netconn_write(pc,sbuf, 1152, NETCONN_COPY);
}
vTaskDelay(1);
}
where pc is struct netconn *.
However if streaming is disabled, there is now way we can detect that
PC sent FIN and closed connection - so subsequent connection to same
port to server causes RST (we are still in inner loop so we cannot
accept next connection).
What can i do to detect that PC closed connection? I do not mean
Ethernet layer error and other hard do diagnose in few miliseconds
problems, rather typical situation with connection closed by PC.
Regards,
Krzysztof Wesołowski,
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[lwip-users] Possible alignment bug in 1.4.0?
I have encountered some HardFaults in rcurrent 1.4.0 version, file
etharp.c code, line 416.
code (stripped from asserts):
static err_t
etharp_send_ip(struct netif *netif, struct pbuf *p, struct eth_addr
*src, struct eth_addr *dst)
{
struct eth_hdr *ethhdr = (struct eth_hdr *)p-payload;
ETHADDR32_COPY(ethhdr-dest, dst);
ETHADDR16_COPY(ethhdr-src, src);
ethhdr-type = PP_HTONS(ETHTYPE_IP);
return netif-linkoutput(netif, p);
}
Assumes that ethhdr-dest is 32bit aligned, which is true only for
ETH_PAD_SIZE==0.
Am I doing something wrong?
Regards,
Krzysztof Wesołowski,
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