Hi ,
I am trying to do rte_pktmbuf_alloc from a mempool within a
secondary process after doing a rte_mempool_lookup for the same mempool. But
the rte_pktmbuf_alloc crashes with the below backtrace
#0 0x0000000000000000 in ?? ()
#1 0x0000000000423da2 in rte_mempool_ops_dequeue_bulk (n=1,
obj_table=0x7fffffffd8e0, mp=0x7fe910fbd540) at
/sonus/p4/ws/sodey/cmn_thirdparty.cloud_dev_5_1/Intel/DPDK/dist
#2 __mempool_generic_get (flags=<optimized out>, cache=<optimized out>,
n=<optimized out>, obj_table=<optimized out>, mp=<optimized out>)
at
/sonus/p4/ws/sodey/cmn_thirdparty.cloud_dev_5_1/Intel/DPDK/distrib_upd/x86_64-native-linuxapp-gcc/include/rte_mempool.h:1296
#3 rte_mempool_generic_get (flags=<optimized out>, cache=<optimized out>,
n=<optimized out>, obj_table=<optimized out>, mp=<optimized out>)
at
/sonus/p4/ws/sodey/cmn_thirdparty.cloud_dev_5_1/Intel/DPDK/distrib_upd/x86_64-native-linuxapp-gcc/include/rte_mempool.h:1334
#4 rte_mempool_get_bulk (n=1, obj_table=0x7fffffffd8e0, mp=0x7fe910fbd540) at
/sonus/p4/ws/sodey/cmn_thirdparty.cloud_dev_5_1/Intel/DPDK/distrib_upd/x86_64-native-linuxapp
#5 rte_mempool_get (obj_p=0x7fffffffd8e0, mp=0x7fe910fbd540) at
/sonus/p4/ws/sodey/cmn_thirdparty.cloud_dev_5_1/Intel/DPDK/distrib_upd/x86_64-native-linuxapp-gcc/include/r
#6 rte_mbuf_raw_alloc (mp=0x7fe910fbd540) at
/sonus/p4/ws/sodey/cmn_thirdparty.cloud_dev_5_1/Intel/DPDK/distrib_upd/x86_64-native-linuxapp-gcc/include/rte_mbuf.h:761
#7 rte_pktmbuf_alloc (mp=0x7fe910fbd540) at
/sonus/p4/ws/sodey/cmn_thirdparty.cloud_dev_5_1/Intel/DPDK/distrib_upd/x86_64-native-linuxapp-gcc/include/rte_mbuf.h:1046
>From the trace it looks like that the ops->dequeue is failing as the ops is
>not set properly.
In the primary process I have done a rte_mempool_create with the flags passed
as 0 (indicating mp_mc option). This should have taken care of setting the ops
properly. Also the rte_pktmbuf_alloc calls in the primary does not give any
issues.
Both the primary and secondary DPDK app code was working fine with 2.1 DPDK,
but now when I am trying to link to the newer DPDK versions like 16.07/16.11,
it is crashing. There is no changes done in the app code.
I do see that the complete rte_mempool code has been changed between 2.1 to
16.07 but could not find any obvious reasons of the crash. Is my usage wrong
or do we need to pass any new flag to make this work.
Did anyone faced similar issue or any help in this will be great for my
debugging. Thanks in advance for the help.
--
Regards,
Souvik
