[lwip-users] (no subject)

[William D. Anderson]

Hello,

  I have been beating my head against an issue related to losing netconn buffers and hoped someone on the list might shed some light as to what I should look out for.

 I have lwip up and running and it responds very reliably to external arp and ping traffic. When I originate pings  I can currently send only 8 ping requests using either Sockets or Raw api.  On the 9^th request I can no longer allocate a socket or pbuf depending on the mode being used.  When I  use socket API for each socket request I call sys_thead_new.  After processing each ping I either call lwip_close(s) or raw_remove(ping_pcb) respectively;   I am using Xilinix provide lwip140_v1_03_a with xilkernel.  Example debug output below shows one good request followed by failing request.  I hope I Am  correct to assume that I can open and close then reuse raw sockets and raw_pcbs ?   Any help greatly appreciated.

 

Thanks

Bill Anderson

 

pingloop c0a8000b cnt = 8

pinghost c0a8000b

Ping w socket Dst IP c0a8000b

sys_thread_new funcp 0xF0005C34 arg 0xF013EAA1 stacksz 2048 prior 2

lwip_socket(PF_INET, SOCK_RAW, 1) = 7

lwip_setsockopt(7, SOL_SOCKET, UNIMPL: optname=0x1006, ..)

Ping Valid IP Str 0x0B00A8C0

lwip_sendto(7, data="" short_size=40, flags=0x0 to=192.168.0.11 port=0

ping: send 192.168.0.11

lwip_recvfrom(7, 0xf0186a94, 40, 0x0, ..)

lwip_recvfrom: top while sock->lastdata=0x0

lwip_recvfrom: netconn_recv err=0, netbuf=0xf009ab7c

lwip_recvfrom: buflen=60 len=40 off=0 sock->lastoffset=0

lwip_recvfrom(7): addr=192.168.0.11 port=1 len=60

lwip_recvfrom: deleting netbuf=0xf009ab7c

ping: recv 168.192.6.240 0 ms

pinlwip_recvfrom: netconn_recv err=0, netbuf=0xf009aafc

lwip_recvfrom: buflen=60 len=40 off=0 sock->lastoffset=0

lwiplwip_recvfrom: netconn_recv err=0, netbuf=0xf009ac3c

lwip_recvfrom: buflen=60 len=40 off=0 sock->lastoffset=0

lwip_lwip_recvfrom: netconn_recv err=0, netbuf=0xf009abbc

lwip_recvfrom: buflen=60 len=40 off=0 sock->lastoffset=0

lwip_recvfrom(4): addr=192.168.0.11 port=1lwip_recvfrom: netconn_recv err=0, netbuf=0xf009abfc

lwip_recvfrom: buflen=60lwip_recvfrom: netconn_recv err=0, netbuf=0xf009ac7c

lwip_recvfrom: buflen=60 len=40 off=0 sock->lastoffset=0

lwip_recvfrom(2): addr=192.168.0.11 port=1 len=60lwip_recvfrom: netconn_recv err=0, netbuf=0xf009ab3c

lwip_recvfrom: bulwip_recvfrom: netconn_recv err=0, netbuf=0xf009aabc

lwip_recvfrom: buflen=60 len=40 off=0 sock->lastoffset=0

lwip_recvfrom(0): addr=192.168.0.11 port=1 len=60

lwip_recvfrom: deleting netbuf=0xf009aabc

ping: recv 168.192.6.240 0g: recv lwip_recvfrom(7, 0xf0186a94, 40, 0x0, ..)

lwip_recvfrom: top while sock->lastdata=0x0

_recvfrom: top while sock->lastdata=0x0

en=60

lwip_recvfrom: deleting netbuf=0xf009aafc

ping: recv 168.192.6.240 0 ms

ping: drop

lwrecvfrom(6, 0xf017ea94, 40, 0x0, ..)

0

en=60

lwip_recvfrom: deleting netbuf=0xf009ac3c

ping: recv 168.192.6.240  len=60

lwip_recvfrom: deleting netbuf=0xf009abbc

ping: recv 168.192.6.240 0 ms

ping: drop

lwip_recvfrom(4, 0xf0 94, 40, 0x0, ..)

0

en=60

fset=0

lwip_recvfrom(3): addr=192.168.0.11 port=1 len=60

lwip_recvfrom: deleting netb

lwip_recvfrom: deleting netbuf=0xf009ac7c

ping: recv 168.192.6.240 0 ms

ping: drop

lwip_recvfrom(2, 0xf015ea94,fxf015ea94, 40, 0x0, ..)

len=60

fset=0

lwip_recvfrom(1): addr=192.168.0.11 port=1 len=60

lwip_recvfrom: deletin bufping: drop

lwip_recvfrom(0, 0xf014ea94, 40, 0x0, ..)

lwip_recvfrom: top while sock->lastdata=0x0

ip_recvfrom:0ock-ping: drop

lwip_recvfrom(5, 0xf0176a94, 40, 0x0, ..)

lwip_recvfrom: top while sock->lastdata=0x0

1le sock->lastdata=0xlwip_recvfrom: top while sock->lastdata=0x0

u->lastdata=0xping: recv 168.192.6.240 0 ms

ping: drop

lwip_recvfrom(3, 0xf0166a94, 40, 0x0, ..)

lwip_recvfrom: top while sock->lastdata=0x0

->lastdata=0xlwip_recvfrom: top while sock->lastdata=0x0

ge sock->lastdata=0xping: recv 168.192.6.240 0 ms

ping: drop

lwip_recvfrom(1, 0xf0156a94, 40, 0x0, ..)

lwip_recvfrom: top while sock->lastdata=0x0

top while sock->lastdata=0xlwip_recvfrom: top while sock->lastdata=0x0

sys_thread_new done

ping: arp lookup ok 0

90-E2-BA-2E-E5-7C

pingloop c0a8000b cnt = 9

pinghost c0a8000b

Ping w socket Dst IP c0a8000b

sys_thread_new funcp 0xF0005C34 arg 0xF013EAA1 stacksz 2048 prior 2

lwip_socket(PF_INET, SOCK_RAW, 1) = -1 / ENOBUFS (could not create netconn)

sys_thread_new done