This reply is helpful to me,thanks a lot.
------------------ ???? ------------------
???: "Ferruh Yigit"<ferruh.yigit at intel.com>;
????: 2016?6?28?(???) ??2:04
???: "????"<373755701 at qq.com>; "users"<users at dpdk.org>; "Damjan Marion
(damarion)"<damarion at cisco.com>;
??: Re: [dpdk-users] my problem aboutixgbe_rx_vec_dev_conf_condition_check is
called by ixgbe_set_rx_function inixgbe
On 5/27/2016 2:32 PM, ???? wrote:
> hello,
>
>
> firstly ,gcc version is 3.4.3.
>
>
> "PMD: ixgbe_set_rx_function(): Port[0] doesn't meet Vector Rx preconditions
> or RTE_IXGBE_INC_VECTOR is not enabled" is outputed while running l2fwd and
> l3fwd ,i GDB the l2fwd and l3fwd.
> i found ixgbe_rx_vec_dev_conf_condition_check has two definition ,one is:
> int __attribute__((weak))
> ixgbe_rx_vec_dev_conf_condition_check(struct rte_eth_dev __rte_unused *dev)
> {
> return -1;
> }
>
>
> the other is:
> int __attribute__((cold))
> ixgbe_rx_vec_dev_conf_condition_check(struct rte_eth_dev *dev)
> {
> ....
> }
> when i GDB the EXE, port_conf.rxmode.hw_ip_checksum was set to 0 .
> ixgbe_set_rx_function call the former at every turn ,i want to know why .
>
>
> any help would be appreciated.
>
I don't know if this is from same person/team, but if not please check
following mail thread for same issue:
http://dpdk.org/ml/archives/dev/2016-June/042323.html
If issue is still valid for you:
Briefly, weak function is defined for the case RTE_IXGBE_INC_VECTOR
config option not enabled.
Which one to link against will be chosen on build time, if app linked
against first one, I would guess RTE_IXGBE_INC_VECTOR is not enabled,
can you please share the output of:
objdump -x librte_pmd_i40e.a| grep i40e_rx_vec_dev_conf_condition_check
Thanks,
ferruh
