How to use SKB

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I use PGM over UDP (no rate control). I have the following lines in my program:

//---------------------------------
m_pgmPktOffset = pgm_pkt_offset(false, 0);
m_skb = pgm_alloc_skb(1400);
pgm_skb_reserve(m_skb, m_pgmPktOffset);

pgm_skb_put(m_skb, sizeof(SeqPacketHeader));
memcpy(m_skb.tail, packet, sizeof(SeqPacketHeader));

size_t bytesWritten;
int status = pgm_send_skbv(m_sock, &m_skb, 1, true, &bytesWritten);
//---------------------------------

All UDP datagrams transmitted by this process are empty. Anything that I miss 
here?
Btw, pgm_pkt_offset() is not exposed in public header files.

What version of the product are you using? On what operating system?

openpgm-5.1.118
Linux 2.6.18-238.12.1.el5

Original issue reported on code.google.com by [email protected] on 25 Apr 2012 at 7:36