RE: DPDK 22.11 Troubleshooting

[Gilbert Carrillo <gcarrillo@ampex.com>]

-----Original Message-----
From: Bruce Richardson <bruce.richardson@intel.com> 
Sent: Wednesday, May 3, 2023 11:18 AM
To: Gilbert Carrillo <gcarrillo@ampex.com>
Cc: dev@dpdk.org
Subject: Re: DPDK 22.11 Troubleshooting

On Wed, May 03, 2023 at 04:53:20PM +0000, Gilbert Carrillo wrote:
> Make static returns an error (see attached).
> 
> v/R,
> Gilbert
>

To help investigate this issue, can you perhaps include the text of the full build output when you run "make static". On my system I see libelf listed on the linker flags when I run "make static", and things link properly. I'm wondering how my setup may differ from yours.

/Bruce
 
> -----Original Message-----
> From: Bruce Richardson <bruce.richardson@intel.com>
> Sent: Wednesday, May 3, 2023 10:35 AM
> To: Gilbert Carrillo <gcarrillo@ampex.com>
> Cc: dev@dpdk.org
> Subject: Re: DPDK 22.11 Troubleshooting
> 
> On Wed, May 03, 2023 at 04:22:05PM +0000, Gilbert Carrillo wrote:
> > Hi Bruce,
> > 
> > Thank you for the response.
> > 
> > There is no errors when I run the makefile, however I do see a difference in the programs. I don't believe the makefile is linking all the libraries together as intended.
> > 
> > For example, when I run the ethtool sample program and compile it using meson, it works fine and rte_eth_dev_count_avail() returns the correct amount. However, when I compile ethtool with the makefile and run it rte_eth_dev_count_avail() returns 0.
> > 
> 
> Note that by default the meson build will statically link the examples, while the makefile will dynamically load the drivers at runtime. That may explain the difference. Can you try building and running using "make static" rather than just "make".
> 
> /Bruce

Below is the full output after running make static from the ethtool folder in examples.
[root@localhost ethtool]# make static
make -C lib static
make[1]: Entering directory '/home/ampex/dpdk-23.03/dpdk-23.03/examples/ethtool/lib'
cc -O3 -fPIC -DALLOW_EXPERIMENTAL_API -O3 -I/usr/include/dpdk -include rte_config.h -march=corei7 -mno-avx512f  -c rte_ethtool.c -o build/rte_ethtool.c.o
In file included from rte_ethtool.c:7:
rte_ethtool.c: In function 'rte_ethtool_get_drvinfo':
rte_ethtool.c:52:29: warning: implicit declaration of function 'rte_dev_name'; did you mean 'rte_dev_remove'? [-Wimplicit-function-declaration]
  strlcpy(drvinfo->bus_info, rte_dev_name(dev_info.device),
                             ^~~~~~~~~~~~
/usr/include/dpdk/rte_string_fns.h:90:50: note: in definition of macro 'strlcpy'
 #define strlcpy(dst, src, size) rte_strlcpy(dst, src, size)
                                                  ^~~
rte_ethtool.c:52:29: warning: passing argument 2 of 'rte_strlcpy' makes pointer from integer without a cast [-Wint-conversion]
  strlcpy(drvinfo->bus_info, rte_dev_name(dev_info.device),
                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/dpdk/rte_string_fns.h:90:50: note: in definition of macro 'strlcpy'
 #define strlcpy(dst, src, size) rte_strlcpy(dst, src, size)
                                                  ^~~
/usr/include/dpdk/rte_string_fns.h:59:36: note: expected 'const char *' but argument is of type 'int'
 rte_strlcpy(char *dst, const char *src, size_t size)
                        ~~~~~~~~~~~~^~~
ar -cr build/librte_ethtool.a build/*.o
make[1]: Leaving directory '/home/ampex/dpdk-23.03/dpdk-23.03/examples/ethtool/lib'
make -C ethtool-app static
make[1]: Entering directory '/home/ampex/dpdk-23.03/dpdk-23.03/examples/ethtool/ethtool-app'
cc -I../lib -O3 -I/usr/include/dpdk -include rte_config.h -march=corei7 -mno-avx512f  -DALLOW_EXPERIMENTAL_API main.c ethapp.c -o build/ethtool-static -L../lib/build -l:librte_ethtool.a -Wl,--whole-archive -l:librte_common_iavf.a -l:librte_bus_auxiliary.a -l:librte_bus_pci.a -l:librte_bus_vdev.a -l:librte_bus_vmbus.a -l:librte_common_mlx5.a -l:librte_mempool_ring.a -l:librte_net_bnxt.a -l:librte_net_e1000.a -l:librte_net_enic.a -l:librte_net_failsafe.a -l:librte_net_i40e.a -l:librte_net_iavf.a -l:librte_net_ice.a -l:librte_net_ixgbe.a -l:librte_net_mlx4.a -l:librte_net_mlx5.a -l:librte_net_netvsc.a -l:librte_net_nfp.a -l:librte_net_qede.a -l:librte_net_ring.a -l:librte_net_tap.a -l:librte_net_vdev_netvsc.a -l:librte_net_vhost.a -l:librte_net_virtio.a -l:librte_node.a -l:librte_graph.a -l:librte_flow_classify.a -l:librte_pipeline.a -l:librte_table.a -l:librte_pdump.a -l:librte_port.a -l:librte_fib.a -l:librte_ipsec.a -l:librte_vhost.a -l:librte_stack.a -l:librte_security.a -l:librte_sched.a -l:librte_reorder.a -l:librte_rib.a -l:librte_dmadev.a -l:librte_regexdev.a -l:librte_rawdev.a -l:librte_pcapng.a -l:librte_member.a -l:librte_lpm.a -l:librte_latencystats.a -l:librte_ip_frag.a -l:librte_gso.a -l:librte_gro.a -l:librte_eventdev.a -l:librte_efd.a -l:librte_distributor.a -l:librte_cryptodev.a -l:librte_compressdev.a -l:librte_cfgfile.a -l:librte_bpf.a -l:librte_bitratestats.a -l:librte_bbdev.a -l:librte_acl.a -l:librte_timer.a -l:librte_hash.a -l:librte_metrics.a -l:librte_cmdline.a -l:librte_pci.a -l:librte_ethdev.a -l:librte_meter.a -l:librte_net.a -l:librte_mbuf.a -l:librte_mempool.a -l:librte_rcu.a -l:librte_ring.a -l:librte_eal.a -l:librte_telemetry.a -l:librte_kvargs.a -Wl,--no-whole-archive -Wl,--export-dynamic -Wl,--as-needed -lrte_node -lrte_graph -lrte_flow_classify -lrte_pipeline -lrte_table -lrte_pdump -lrte_port -lrte_fib -lrte_ipsec -lrte_vhost -lrte_stack -lrte_security -lrte_sched -lrte_reorder -lrte_rib -lrte_dmadev -lrte_regexdev -lrte_rawdev -lrte_pcapng -lrte_member -lrte_lpm -lrte_latencystats -lrte_ip_frag -lrte_gso -lrte_gro -lrte_eventdev -lrte_efd -lrte_distributor -lrte_cryptodev -lrte_compressdev -lrte_cfgfile -lrte_bpf -lrte_bitratestats -lrte_bbdev -lrte_acl -lrte_timer -lrte_hash -lrte_metrics -lrte_cmdline -lrte_pci -lrte_ethdev -lrte_meter -lrte_net -lrte_mbuf -lrte_mempool -lrte_rcu -lrte_ring -lrte_eal -lrte_telemetry -lrte_kvargs -pthread -lm -ldl -lnuma -lmlx5 -lpthread -lpthread -libverbs -lpthread -lmlx4 -lpthread -libverbs -lpthread 
//usr/local/lib64/librte_bpf.a(bpf_bpf_load_elf.c.o): In function `rte_bpf_elf_load':
bpf_load_elf.c:(.text+0x5e): undefined reference to `elf_version'
bpf_load_elf.c:(.text+0x6e): undefined reference to `elf_begin'
bpf_load_elf.c:(.text+0x79): undefined reference to `elf64_getehdr'
bpf_load_elf.c:(.text+0xc7): undefined reference to `elf_nextscn'
bpf_load_elf.c:(.text+0xdb): undefined reference to `elf64_getshdr'
bpf_load_elf.c:(.text+0xec): undefined reference to `elf_strptr'
bpf_load_elf.c:(.text+0x126): undefined reference to `elf_getdata'
bpf_load_elf.c:(.text+0x14f): undefined reference to `elf_ndxscn'
bpf_load_elf.c:(.text+0x15e): undefined reference to `elf_nextscn'
bpf_load_elf.c:(.text+0x197): undefined reference to `elf_nextscn'
bpf_load_elf.c:(.text+0x1ab): undefined reference to `elf64_getshdr'
bpf_load_elf.c:(.text+0x1c8): undefined reference to `elf_getdata'
bpf_load_elf.c:(.text+0x20e): undefined reference to `elf64_getehdr'
bpf_load_elf.c:(.text+0x21e): undefined reference to `elf_getscn'
bpf_load_elf.c:(.text+0x228): undefined reference to `elf_getdata'
bpf_load_elf.c:(.text+0x2a5): undefined reference to `elf_strptr'
bpf_load_elf.c:(.text+0x3d9): undefined reference to `elf_nextscn'
bpf_load_elf.c:(.text+0x3f5): undefined reference to `elf_end'
bpf_load_elf.c:(.text+0x493): undefined reference to `elf_nextscn'
bpf_load_elf.c:(.text+0x584): undefined reference to `elf_end'
bpf_load_elf.c:(.text+0x5db): undefined reference to `elf_errno'
bpf_load_elf.c:(.text+0x5e4): undefined reference to `elf_errmsg'
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:48: build/ethtool-static] Error 1
make[1]: Leaving directory '/home/ampex/dpdk-23.03/dpdk-23.03/examples/ethtool/ethtool-app'
make: *** [Makefile:11: ethtool-app] Error 2

-Gilbert