LwIP Socket Jumbo Frame

Question

Running a VC707, the HW design is based on the BIST project.  I updated the TEMAC to have 32k FIFO buffers.  SDK 2014.2.
For my SDK application I have 2 designs.
 1.  Socket based echo server from XAP1026
 2.  Default echo server example project
Following XAP1026 for configuring LwIP for jumbo frames I can get my RAW API design to send jumbo frames (8192 length packets).
My socket echo server still only sends 1500 byte packets with the same configuration (only difference is socket vs. RAW mode).
Has anyone overcome this issue before?  Or has anyone information on configure jumbo frames for LwIP in socket mode.
Found this older post that seems similar yet different, but it is like 3 years old so I'm not sure if it is still accurate: 
http://forums.xilinx.com/t5/Embedded-Development-Tools/Trying-to-send-larger-packets-using-UDP-XAPP1026-UECHO-test/m-p/16237?query.id=22717
 

Answer 1

Xilkernel Configuration
BEGIN OS
PARAMETER OS_NAME = xilkernel
PARAMETER OS_VER = 6.1
PARAMETER PROC_INSTANCE = microblaze_0
PARAMETER config_named_sema = true
PARAMETER config_pthread_mutex = true
PARAMETER config_sema = true
PARAMETER config_time = true
PARAMETER debug_mon = true
PARAMETER max_bufs = 100
PARAMETER max_pthreads = 100
PARAMETER max_readyq = 100
PARAMETER max_sem = 25
PARAMETER max_sem_waitq = 100
PARAMETER pthread_stack_size = 32768
PARAMETER stdin = axi_uart16550_0
PARAMETER stdout = axi_uart16550_0
PARAMETER sysintc_spec = microblaze_0_axi_intc
PARAMETER systmr_dev = axi_timer_0
PARAMETER systmr_interval = 1
PARAMETER verbose = true
END
LwIP Configuration
BEGIN LIBRARY
PARAMETER LIBRARY_NAME = lwip140
PARAMETER LIBRARY_VER = 2.1
PARAMETER PROC_INSTANCE = microblaze_0
PARAMETER api_mode = SOCKET_API
PARAMETER ip_frag_max_mtu = 9000
PARAMETER mem_size = 524288
PARAMETER pbuf_pool_bufsize = 9700
PARAMETER tcp_mss = 8060
PARAMETER tcp_snd_buf = 32768
PARAMETER temac_use_jumbo_frames = true
END