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| author | brian <brian@FreeBSD.org> | 1999-09-30 07:23:13 +0000 |
|---|---|---|
| committer | brian <brian@FreeBSD.org> | 1999-09-30 07:23:13 +0000 |
| commit | f3bceef566234685610dbdd666fe891f89f4501d (patch) | |
| tree | 122b4ca632e7da2408474ec5e53ecb4c582a3f96 /usr.sbin/ppp/ip.c | |
| parent | 1fc218b67628314fd94ac6b188a33a35873298be (diff) | |
| download | FreeBSD-src-f3bceef566234685610dbdd666fe891f89f4501d.zip FreeBSD-src-f3bceef566234685610dbdd666fe891f89f4501d.tar.gz | |
Support GRE packets
Submitted by: Harry Starr <starr@gccs.com.au>
Diffstat (limited to 'usr.sbin/ppp/ip.c')
| -rw-r--r-- | usr.sbin/ppp/ip.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/usr.sbin/ppp/ip.c b/usr.sbin/ppp/ip.c index f1219d0..2e5f00c 100644 --- a/usr.sbin/ppp/ip.c +++ b/usr.sbin/ppp/ip.c @@ -170,6 +170,15 @@ FilterCheck(const struct ip *pip, const struct filter *filter) estab = syn = finrst = -1; sport = ntohs(0); break; +#ifdef IPPROTO_GRE + case IPPROTO_GRE: + cproto = P_GRE; + if (datalen < 2) /* GRE uses 2-octet+ messages */ + return (1); + estab = syn = finrst = -1; + sport = ntohs(0); + break; +#endif #ifdef IPPROTO_OSPFIGP case IPPROTO_OSPFIGP: cproto = P_OSPF; @@ -360,6 +369,19 @@ PacketCheck(struct bundle *bundle, char *cp, int nb, struct filter *filter) } break; +#ifdef IPPROTO_GRE + case IPPROTO_GRE: + if (logit && loglen < sizeof logbuf) { + snprintf(logbuf + loglen, sizeof logbuf - loglen, + "GRE: %s ---> ", inet_ntoa(pip->ip_src)); + loglen += strlen(logbuf + loglen); + snprintf(logbuf + loglen, sizeof logbuf - loglen, + "%s", inet_ntoa(pip->ip_dst)); + loglen += strlen(logbuf + loglen); + } + break; +#endif + #ifdef IPPROTO_OSPFIGP case IPPROTO_OSPFIGP: if (logit && loglen < sizeof logbuf) { |
