[dpdk-dev] [PATCH v2] app/testpmd: removed softnic CLI modifications
Singh, Jasvinder
jasvinder.singh at intel.com
Wed Jul 25 16:59:22 CEST 2018
> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas at monjalon.net]
> Sent: Wednesday, July 25, 2018 3:43 PM
> To: Moti Haimovsky <motih at mellanox.com>
> Cc: dev at dpdk.org; stable at dpdk.org; Singh, Jasvinder
> <jasvinder.singh at intel.com>; Dumitrescu, Cristian
> <cristian.dumitrescu at intel.com>; Ananyev, Konstantin
> <konstantin.ananyev at intel.com>
> Subject: Re: [PATCH v2] app/testpmd: removed softnic CLI modifications
>
> +Cc
>
> 25/07/2018 16:40, Moti Haimovsky:
> > This patch reverts the testpmd CLI prompt routine modifications done
> > in order to support softnic.
> > The reason of doing so is due to testpmd abnormal exit observed on
> > several setups caused by the softnic modifications to this routine,
> > for example: When running testpmd with tap interface (/app/testpmd -n
> > 4 --vdev=net_tap0,iface=tap0,remote=eth1 -- --burst=64
> > --mbcache=512 -i --nb-cores=7 --rxq=2 --txq=2 --txd=512
> > --rxd=512 --port-topology=chained --forward-mode=rxonly) testpmd
> > crashes seconds after presenting its prompt with the following
> > error:
> > testpmd> PANIC in prompt():
> > CLI poll error (-1)
> >
> > Thread 1 "testpmd" received signal SIGABRT, Aborted.
> > 0x00007ffff668e0d0 in raise () from /lib64/libc.so.6
> > (gdb) bt
> > #0 0x00007ffff668e0d0 in raise () from /lib64/libc.so.6
> > #1 0x00007ffff668f6b1 in abort () from /lib64/libc.so.6
> > #2 0x0000000000468027 in __rte_panic ()
> > #3 0x00000000004876ed in prompt ()
> > #4 0x000000000046dffc in main ()
> >
> > When running testpmd with bare-metal device (app/testpmd -n 4
> > --socket-mem=1024,1024 -w 04:00.0 --
> > --burst=64 --mbcache=512 -i --nb-cores=7
> > --rxq=64 --txq=4 --txd=16 --rxd=16)
> > and pressing CTRL+D right after testpmd prompt is presented then the
> > program crashes while presenting the same messages as above.
> >
> > Needless to say that this behavior is not observed when using the
> > previous CLI prompt routine.
> >
> > Fixes: 0ad778b398c6 ("app/testpmd: rework softnic forward mode")
> > Cc: stable at dpdk.org
> >
> > Signed-off-by: Moti Haimovsky <motih at mellanox.com>
> > ---
> > v2:
> > * Removed softnic modifications altogether.
> > v1:
> > * Wrapped softnic modifications with compilation switch.
> > ---
> > app/test-pmd/cmdline.c | 39 ++-------------------------------------
> > 1 file changed, 2 insertions(+), 37 deletions(-)
> >
> > diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c index
> > 2c32029..d058860 100644
> > --- a/app/test-pmd/cmdline.c
> > +++ b/app/test-pmd/cmdline.c
> > @@ -17896,50 +17896,15 @@ struct
> > cmd_config_per_queue_tx_offload_result { void
> > prompt(void)
> > {
> > - int status;
> > -
> > /* initialize non-constant commands */
> > cmd_set_fwd_mode_init();
> > cmd_set_fwd_retry_mode_init();
> >
> > -#if defined RTE_LIBRTE_PMD_SOFTNIC
> > - portid_t softnic_portid, pid;
> > - uint8_t softnic_enable = 0;
> > -
> > - if (strcmp(cur_fwd_eng->fwd_mode_name, "softnic") == 0) {
> > - RTE_ETH_FOREACH_DEV(pid) {
> > - struct rte_port *port = &ports[pid];
> > - const char *driver = port->dev_info.driver_name;
> > -
> > - if (strcmp(driver, "net_softnic") == 0) {
> > - softnic_portid = pid;
> > - softnic_enable = 1;
> > - break;
> > - }
> > - }
> > - }
> > -#endif
> > -
> > testpmd_cl = cmdline_stdin_new(main_ctx, "testpmd> ");
> > if (testpmd_cl == NULL)
> > return;
> > -
> > - for (;;) {
> > - status = cmdline_poll(testpmd_cl);
> > - if (status < 0)
> > - rte_panic("CLI poll error (%" PRId32 ")\n", status);
> > - else if (status == RDLINE_EXITED) {
> > - cmdline_stdin_exit(testpmd_cl);
> > - rte_exit(0, "\n");
> > - }
> > -
> > -#if defined RTE_LIBRTE_PMD_SOFTNIC
> > -
> > - if ((softnic_enable == 1) &&
> > - (strcmp(cur_fwd_eng->fwd_mode_name, "softnic") == 0))
> > - rte_pmd_softnic_manage(softnic_portid);
> > -#endif
> > - }
> > + cmdline_interact(testpmd_cl);
> > + cmdline_stdin_exit(testpmd_cl);
> > }
> >
> > void
> >
With above changes in cmdline.c, you should also consider removing following from the file -
#ifdef RTE_LIBRTE_PMD_SOFTNIC
#include <rte_eth_softnic.h>
#endif
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