[dpdk-dev] No information about needed pcap version

[Mats Liljegren]

You could let PCAP_SEND be always 1 in rte_eth_pcap.h and then
document that for libpcap < 1.0.0 you need to change PCAP_SEND to 0 to
avoid link error for pcap_sendpacket().

Regards
Mats

On Thu, Jan 9, 2014 at 2:47 PM, David Marchand <david.marchand at 6wind.com> wrote:
> Hello,
>
> Indeed, this check on a define is wrong.
>
> pcap.h does not seem to have information on library version (nor a #define
> linked to pcap_sendpacket functionality).
>
> We need to think of a better check but, for now, you can try to #define
> PCAP_SEND to 1 in lib/librte_pmd_pcap/rte_eth_pcap.h.
> pcap_sendpacket() is undefined for really old versions of libpcap (I think <
> 1.0.0).
> I suppose we might need something like configure (trying to link against
> pcap lib and see if pcap_sendpacket symbol is defined).
>
> Or we can revert 4fc6677d995bb46ddf155ee08a215f41e5ecbfe8 and declare
> libpcap < X.X.X unsupported.
>
>
> --
> David Marchand
>
>
> On Thu, Jan 9, 2014 at 12:59 PM, Mats Liljegren <liljegren.mats2 at gmail.com>
> wrote:
>>
>> In file lib/librte_pmd_pcap/rte_eth_pcap.h there is a test to see
>> whether function pcap_sendpacket is a macro or not. If not, send is
>> not supported using pcap.
>>
>> My pcap library do have the function, but not defined as a macro.
>>
>> I'm using libpcap-dev version 1.4.0, but I couldn't find any
>> information in the manuals what version I need.
>>
>> Which version do I need to make this work?
>>
>> Regards
>> Mats
>
>