diff options
| author | wollman <wollman@FreeBSD.org> | 1999-02-09 16:55:46 +0000 |
|---|---|---|
| committer | wollman <wollman@FreeBSD.org> | 1999-02-09 16:55:46 +0000 |
| commit | 433e0009a0470d087a405de80860e9765b785cca (patch) | |
| tree | 9bdcfc1fa9887978f09f2da185530bfb1954399c /sys/netinet | |
| parent | 1dd8a295cad7dae8446682c3db2bb6430c353583 (diff) | |
| download | FreeBSD-src-433e0009a0470d087a405de80860e9765b785cca.zip FreeBSD-src-433e0009a0470d087a405de80860e9765b785cca.tar.gz | |
After wading in the cesspool of ip_input for an hour, I have managed to
convince myself that nothing will break if we permit IP input while
interface addresses are unconfigured. (At worst, they will hit some
ULP's PCB scan and fail if nobody is listening.) So, remove the restriction
that addresses must be configured before packets can be input. Assume
that any unicast packet we receive while unconfigured is potentially ours.
Diffstat (limited to 'sys/netinet')
| -rw-r--r-- | sys/netinet/ip_input.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/sys/netinet/ip_input.c b/sys/netinet/ip_input.c index b75a51c..c1ee58e 100644 --- a/sys/netinet/ip_input.c +++ b/sys/netinet/ip_input.c @@ -31,8 +31,7 @@ * SUCH DAMAGE. * * @(#)ip_input.c 8.2 (Berkeley) 1/4/94 - * $Id: ip_input.c,v 1.112 1999/01/22 16:50:45 wollman Exp $ - * $ANA: ip_input.c,v 1.5 1996/09/18 14:34:59 wollman Exp $ + * $Id: ip_input.c,v 1.113 1999/01/27 22:42:25 dillon Exp $ */ #define _IP_VHL @@ -290,14 +289,6 @@ ip_input(struct mbuf *m) if (m == NULL || (m->m_flags & M_PKTHDR) == 0) panic("ip_input no HDR"); #endif - /* - * If no IP addresses have been set yet but the interfaces - * are receiving, can't do anything with incoming packets yet. - * XXX This is broken! We should be able to receive broadcasts - * and multicasts even without any local addresses configured. - */ - if (TAILQ_EMPTY(&in_ifaddrhead)) - goto bad; ipstat.ips_total++; if (m->m_pkthdr.len < sizeof(struct ip)) @@ -465,7 +456,14 @@ pass: /* * Check our list of addresses, to see if the packet is for us. + * If we don't have any addresses, assume any unicast packet + * we receive might be for us (and let the upper layers deal + * with it). */ + if (TAILQ_EMPTY(&in_ifaddrhead) && + (m->m_flags & (M_MCAST|M_BCAST)) == 0) + goto ours; + for (ia = TAILQ_FIRST(&in_ifaddrhead); ia; ia = TAILQ_NEXT(ia, ia_link)) { #define satosin(sa) ((struct sockaddr_in *)(sa)) |
