/*----------------------------------------------------------------------------*/
static inline int
HandleActiveOpen(mtcp_manager_t mtcp, tcp_stream *cur_stream, uint32_t cur_ts,
struct tcphdr *tcph, uint32_t seq, uint32_t ack_seq, uint16_t window)
{
cur_stream->rcvvar->irs = seq;
cur_stream->snd_nxt = ack_seq;
cur_stream->sndvar->peer_wnd = window;
cur_stream->rcvvar->snd_wl1 = cur_stream->rcvvar->irs - 1;
cur_stream->rcv_nxt = cur_stream->rcvvar->irs + 1;
cur_stream->rcvvar->last_ack_seq = ack_seq;
ParseTCPOptions(cur_stream, cur_ts, (uint8_t *)tcph + TCP_HEADER_LEN,
(tcph->doff << 2) - TCP_HEADER_LEN);
cur_stream->sndvar->cwnd = ((cur_stream->sndvar->cwnd == 1)?
(cur_stream->sndvar->mss * 2): cur_stream->sndvar->mss);
cur_stream->sndvar->ssthresh = cur_stream->sndvar->mss * 10;
UpdateRetransmissionTimer(mtcp, cur_stream, cur_ts);
return TRUE;
}
/*----------------------------------------------------------------------------*/
static inline tcp_stream *
HandlePassiveOpen(mtcp_manager_t mtcp, uint32_t cur_ts, const struct iphdr *iph,
const struct tcphdr *tcph, uint32_t seq, uint16_t window)
{
tcp_stream *cur_stream = NULL;
/* create new stream and add to flow hash table */
cur_stream = CreateTCPStream(mtcp, NULL, MTCP_SOCK_STREAM,
iph->daddr, tcph->dest, iph->saddr, tcph->source);
if (!cur_stream) {
TRACE_ERROR("INFO: Could not allocate tcp_stream!\n");
return FALSE;
}
cur_stream->rcvvar->irs = seq;
cur_stream->sndvar->peer_wnd = window;
cur_stream->rcv_nxt = cur_stream->rcvvar->irs;
cur_stream->sndvar->cwnd = 1;
ParseTCPOptions(cur_stream, cur_ts, (uint8_t *)tcph + TCP_HEADER_LEN,
(tcph->doff << 2) - TCP_HEADER_LEN);
return cur_stream;
}
/*----------------------------------------------------------------------------*/
static inline int
HandleActiveOpen(mtcp_manager_t mtcp, tcp_stream *cur_stream,
struct pkt_ctx *pctx)
{
const struct tcphdr* tcph = pctx->p.tcph;
cur_stream->rcvvar->irs = pctx->p.seq;
cur_stream->snd_nxt = pctx->p.ack_seq;
cur_stream->sndvar->peer_wnd = pctx->p.window;
cur_stream->rcvvar->snd_wl1 = cur_stream->rcvvar->irs - 1;
cur_stream->rcv_nxt = cur_stream->rcvvar->irs + 1;
cur_stream->rcvvar->last_ack_seq = pctx->p.ack_seq;
ParseTCPOptions(cur_stream, pctx->p.cur_ts, (uint8_t *)tcph + TCP_HEADER_LEN,
(tcph->doff << 2) - TCP_HEADER_LEN);
cur_stream->sndvar->cwnd = ((cur_stream->sndvar->cwnd == 1)?
(cur_stream->sndvar->mss * 2): cur_stream->sndvar->mss);
cur_stream->sndvar->ssthresh = cur_stream->sndvar->mss * 10;
if (HAS_STREAM_TYPE(cur_stream, MOS_SOCK_STREAM))
UpdateRetransmissionTimer(mtcp, cur_stream, pctx->p.cur_ts);
return TRUE;
}
