Re: [dpdk-dev] Error : dereferencing pointer to incomplete type......

[Daniel Kaminsky <daniel.kaminsky@infinitelocality.com>]

Hi,

Are you sure that this is the line that gives the error? How did you define
m_pool?

Regarding coping one byte, copy using simple assignment should be the most
efficient way. If you want to make sure it is just 8 bits, do a bit wise
and (& 0xff).

Daniel


On Mon, Mar 17, 2014 at 10:27 AM, sabu kurian <sabu2kurian@gmail.com> wrote:

> A little bit of correction on the second format:
>
> iphdr->packet_id = rte_bswap16(0x0001); // This one gives error as well....
>
> Any idea on what could be wrong ?
>
> Thanks
>
>
>
>
>
>
> On Mon, Mar 17, 2014 at 1:51 PM, sabu kurian <sabu2kurian@gmail.com>
> wrote:
>
> > Hello friends,
> >
> > I get a error like "dereferencing pointer to incomplete type", when I try
> > to fill in the IPv4 headers.
> >
> > Below is the code snippet:
> >
> > struct ether_hdr *ehdr = rte_pktmbuf_mtod(m_pool, struct ether_hdr *);
> >
> > struct ipv4_hdr *iphdr = (struct ipv4_hdr *)(&ehdr[1]);
> >
> >
> > iphdr->packet_id = (uint16_t)0x0001; //This gives error.
> >
> > rte_bswap16(iphdr->packet_id,0x0001); //This format also gives the same
> > error.
> >
> > And also what is the best way to copy an 8 bit (1 byte) value for fields
> > like 'type_of_service' ? will rte_memcpy() work for it ?
> >
> >
> >
> > Thanks in advance....
> >
> >
>