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If a lcp configure request is received in the lcp opened state and it

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is acknowledged, it should go to the lcp ack sent state.

Don't reply on lcp echo requests when not in the lcp opened state.

If the interface is set to CISCO mode, it should still be marked
running when ifconfiged.

Fixed a few indentations that had gone wrong somewhere.

Submitted-by: John.Hay@csir.co.za
This commit is contained in:
Peter Wemm 1995-11-21 01:23:13 +00:00
parent d57885c30d
commit 8fb90141c8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=12436
1 changed files with 27 additions and 23 deletions
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50
sys/net/if_spppsubr.c
View file

@ -357,16 +357,17 @@ int sppp_output (struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst, struct
* Put low delay, telnet, rlogin and ftp control packets
* in front of the queue.
*/
{
struct ip *ip = mtod (m, struct ip*);
struct tcphdr *tcp = (struct tcphdr*) ((long*)ip + ip->ip_hl);
if (dst->sa_family == AF_INET) {
struct ip *ip = mtod (m, struct ip*);
struct tcphdr *tcp = (struct tcphdr*) ((long*)ip + ip->ip_hl);
if (! IF_QFULL (&sp->pp_fastq) && ((ip->ip_tos & IPTOS_LOWDELAY) ||
ip->ip_p == IPPROTO_TCP &&
m->m_len >= sizeof (struct ip) + sizeof (struct tcphdr) &&
(INTERACTIVE (ntohs (tcp->th_sport)) ||
INTERACTIVE (ntohs (tcp->th_dport)))))
ifq = &sp->pp_fastq;
if (! IF_QFULL (&sp->pp_fastq) &&
((ip->ip_tos & IPTOS_LOWDELAY) ||
ip->ip_p == IPPROTO_TCP &&
m->m_len >= sizeof (struct ip) + sizeof (struct tcphdr) &&
(INTERACTIVE (ntohs (tcp->th_sport)) ||
INTERACTIVE (ntohs (tcp->th_dport)))))
ifq = &sp->pp_fastq;
}
#endif
@ -674,19 +675,19 @@ void sppp_lcp_input (struct sppp *sp, struct mbuf *m)
sp->ipcp.state = IPCP_STATE_CLOSED;
}
break;
}
/* Send Configure-Ack packet. */
sp->pp_loopcnt = 0;
sppp_cp_send (sp, PPP_LCP, LCP_CONF_ACK,
h->ident, len-4, h+1);
/* Change the state. */
}
/* Send Configure-Ack packet. */
sp->pp_loopcnt = 0;
sppp_cp_send (sp, PPP_LCP, LCP_CONF_ACK,
h->ident, len-4, h+1);
/* Change the state. */
switch (sp->lcp.state) {
case LCP_STATE_CLOSED:
sp->lcp.state = LCP_STATE_ACK_SENT;
break;
case LCP_STATE_ACK_RCVD:
sp->lcp.state = LCP_STATE_OPENED;
sppp_ipcp_open (sp);
sp->lcp.state = LCP_STATE_OPENED;
sppp_ipcp_open (sp);
break;
case LCP_STATE_OPENED:
/* Remote magic changed -- close session. */
@ -694,6 +695,8 @@ void sppp_lcp_input (struct sppp *sp, struct mbuf *m)
sp->ipcp.state = IPCP_STATE_CLOSED;
/* Initiate renegotiation. */
sppp_lcp_open (sp);
/* An ACK has already been sent. */
sp->lcp.state = LCP_STATE_ACK_SENT;
break;
}
break;
@ -762,8 +765,8 @@ void sppp_lcp_input (struct sppp *sp, struct mbuf *m)
/* Go to closed state. */
sp->lcp.state = LCP_STATE_CLOSED;
sp->ipcp.state = IPCP_STATE_CLOSED;
/* Initiate renegotiation. */
sppp_lcp_open (sp);
/* Initiate renegotiation. */
sppp_lcp_open (sp);
break;
case LCP_TERM_ACK:
case LCP_CODE_REJ:
@ -774,6 +777,8 @@ void sppp_lcp_input (struct sppp *sp, struct mbuf *m)
/* Discard the packet. */
break;
case LCP_ECHO_REQ:
if (sp->lcp.state != LCP_STATE_OPENED)
break;
if (len < 8) {
if (ifp->if_flags & IFF_DEBUG)
printf ("%s%d: invalid lcp echo request packet length: %d bytes\n",
@ -1006,8 +1011,6 @@ int sppp_ioctl (struct ifnet *ifp, int cmd, void *data)
/* fall through... */
case SIOCSIFFLAGS:
if (sp->pp_flags & PP_CISCO)
break;
s = splimp ();
going_up = (ifp->if_flags & IFF_UP) &&
! (ifp->if_flags & IFF_RUNNING);
@ -1023,7 +1026,8 @@ int sppp_ioctl (struct ifnet *ifp, int cmd, void *data)
if (going_up) {
/* Interface is starting -- initiate negotiation. */
ifp->if_flags |= IFF_RUNNING;
sppp_lcp_open (sp);
if (!(sp->pp_flags & PP_CISCO))
sppp_lcp_open (sp);
}
splx (s);
break;
@ -1109,7 +1113,7 @@ int sppp_lcp_conf_parse_options (struct sppp *sp, struct lcp_header *h,
bcopy (p, r, p[1]);
r += p[1];
rlen += p[1];
}
}
if (rlen)
sppp_cp_send (sp, PPP_LCP, LCP_CONF_REJ, h->ident, rlen, buf);
free (buf, M_TEMP);