SCTP_INPUT_CB
chunk->transport->encap_port = SCTP_INPUT_CB(chunk->skb)->encap_port;
const struct sctp_chunk *chunk = SCTP_INPUT_CB(skb)->chunk;
SCTP_INPUT_CB(skb)->af = af;
SCTP_INPUT_CB(skb)->chunk = chunk;
struct sctp_chunk *chunk = SCTP_INPUT_CB(skb)->chunk;
struct sctp_chunk *chunk = SCTP_INPUT_CB(skb)->chunk;
*cb = SCTP_INPUT_CB(chunk->skb),
*head_cb = SCTP_INPUT_CB(chunk->head_skb);
SCTP_INPUT_CB(skb)->encap_port = 0;
SCTP_INPUT_CB(skb)->encap_port = 0;
SCTP_INPUT_CB(skb)->encap_port = udp_hdr(skb)->source;
nep.cur_port = SCTP_INPUT_CB(chunk->skb)->encap_port;
SCTP_INPUT_CB(skb)->af->from_skb(&asoc->c.peer_addr, skb, 1);
asoc->encap_port = SCTP_INPUT_CB(chunk->skb)->encap_port;
if (SCTP_INPUT_CB(chunk->skb)->encap_port != chunk->transport->encap_port)
transport->encap_port = SCTP_INPUT_CB(chunk->skb)->encap_port;
struct sctp_af *af = SCTP_INPUT_CB(chunk->skb)->af;