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l2tp: Add Last Sent/Received LCP ConfReq in ICCN

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To support proxy LCP negotiation.
This commit is contained in:
Samuel Thibault 2025-03-08 23:13:23 +01:00
parent ffcaf851ca
commit 6f04a5c390
3 changed files with 54 additions and 0 deletions
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14
l2tpns.c
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@ -4841,6 +4841,8 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr, uint16_t indexu
session[s].ppp.phase = Establish;
session[s].ppp.lcp = Starting;
sess_local[s].lcp_last_received_confreq_n = 0;
sess_local[s].lcp_last_sent_confreq_n = 0;
STAT(session_created);
break;
@ -4867,6 +4869,7 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr, uint16_t indexu
LOG(3, s, t, "Received ICRP\n");
if (session[s].forwardtosession)
{
sessionidt fs = session[s].forwardtosession;
controlt *c = controlnew(12); // ICCN
session[s].opened = time_now;
@ -4879,6 +4882,17 @@ void processudp(uint8_t *buf, int len, struct sockaddr_in *addr, uint16_t indexu
control32(c, 19, 1, 1); // Framing Type
control32(c, 24, 10000000, 1); // Tx Connect Speed
if (sess_local[fs].lcp_last_sent_confreq_n)
// Last Sent LCP ConfReq
controlb(c, 27, sess_local[fs].lcp_last_sent_confreq,
sess_local[fs].lcp_last_sent_confreq_n, 0);
if (sess_local[fs].lcp_last_received_confreq_n)
// Last Received LCP ConfReq
controlb(c, 28, sess_local[fs].lcp_last_received_confreq,
sess_local[fs].lcp_last_received_confreq_n, 0);
controladd(c, asession, t); // send the message
LOG(3, s, t, "Sending ICCN\n");
}