rte_mempool segmentation fault. about fastclick HOT 8 OPEN

Mhh I wonder if it's not interfering with click's packet pool. Try adding the test code at the end of

Click's DPDK code is a bit deprecated and less feature rich. If using DPDK, stay in FastClick :)

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i add code to end of that function, still segmentation fault.

#0  0x0000555555a72c5b in bucket_get_count ()
#1  0x0000555555c15e21 in rte_mempool_avail_count ()
#2  0x0000555555c16409 in rte_mempool_in_use_count ()
#3  0x000055555576c3cd in DPDKDevice::alloc_pktmbufs(ErrorHandler*) ()
#4  0x000055555576c44b in DPDKDevice::static_initialize(ErrorHandler*) ()
#5  0x000055555576c4b4 in DPDKDevice::initialize(ErrorHandler*) [clone .cold.91] ()
#6  0x0000555555756ba5 in FromDPDKRing::initialize(ErrorHandler*) ()
#7  0x00005555559f8238 in Router::initialize(ErrorHandler*) ()
#8  0x000055555599c603 in parse_configuration(String const&, bool, bool, click_args_t&, ErrorHandler*) ()
#9  0x00005555557faf47 in main ()

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Maybe this is due to different DPDK linking. Is your "test" secondary also statically linked? No other globally installed DPDK left? or dangling old $RTE_SDK?

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no it is dynamically linked. can i link click/fastclick dynamiclly?

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Configure FastClick with --enable-dynamic-linking

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yes now it works. thanks a lot.

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Hi
this problem fixed in fastclick, but i need to fix it in click too.
i updated dpdk.mk in click file as below:

ifeq ($(shell [ -n "$(RTE_VER_YEAR)" ] && ( [ "$(RTE_VER_YEAR)" -ge 20 ] && [ "$(RTE_VER_MONTH)" -ge 11 ] ) && echo true),true)
$(info $$RTE_SDK_BIN is [${RTE_SDK_BIN}])
$(info $$PKG_CONFIG_PATH is [${PKG_CONFIG_PATH}])
$(info $$RTE_VER_YEAR is [${RTE_VER_YEAR}])
$(info $$RTE_VER_MONTH is [${RTE_VER_MONTH}])
PKG_CONFIG_PATH = $(RTE_SDK_BIN)/meson-uninstalled
$(info $$PKG_CONFIG_PATH is [${PKG_CONFIG_PATH}])

PKGCONF ?= pkg-config
CXXFLAGS += -O3 $(shell export PKG_CONFIG_PATH='$(PKG_CONFIG_PATH)'; $(PKGCONF) --cflags libdpdk) 
LDFLAGS += $(shell export PKG_CONFIG_PATH='$(PKG_CONFIG_PATH)'; $(PKGCONF) --libs --static libdpdk)

else

ifeq ($(RTE_SDK),)
$(error "Please define RTE_SDK environment variable")
endif
...

by adding this codes to dpdk.mk click linked to dpdk statically and there is no problem.
but now i want to link dynamically, so i remove --static from LDFLAGS but rte libraries not linked. (i saw undefined reference, and checked with ldd, rte libs are not linked)
i figure out problem is that output of $(shell export PKG_CONFIG_PATH='$(PKG_CONFIG_PATH)'; $(PKGCONF) --libs libdpdk command has --wl,--as-needed, these flags prevent to link dynamically, if I copy the output of the command and remove --wl,--as-needed, linking is successfully.
Can you tell me a way to fix it in click too?
thanks.

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