diff options
| author | Marco Pfatschbacher <mpf@cvs.openbsd.org> | 2007-03-18 23:23:18 +0000 |
|---|---|---|
| committer | Marco Pfatschbacher <mpf@cvs.openbsd.org> | 2007-03-18 23:23:18 +0000 |
| commit | 6f9929b6c6550b6c1afc1f5a1a5e4e3ee079857f (patch) | |
| tree | 7b53d8b777e07c5f80672a4209bba5256148b33e /sys/netinet/ip_icmp.c | |
| parent | 1cddb68d501e88a56b636de082738e5483715814 (diff) | |
Add IP load balancing support for carp(4).
This provides a similar functionality as ARP balancing,
but also works for traffic that comes across routers.
IPv6 is supported as well.
The configuration scheme will change as soon we have sth better.
Also add support for changing the MAC address on carp(4)
interfaces. (code from mcbride)
Tested by pyr@ and reyk@
OK mcbride@
Diffstat (limited to 'sys/netinet/ip_icmp.c')
| -rw-r--r-- | sys/netinet/ip_icmp.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/sys/netinet/ip_icmp.c b/sys/netinet/ip_icmp.c index 08861700058..ad48e0ca815 100644 --- a/sys/netinet/ip_icmp.c +++ b/sys/netinet/ip_icmp.c @@ -1,4 +1,4 @@ -/* $OpenBSD: ip_icmp.c,v 1.72 2007/01/03 18:39:56 claudio Exp $ */ +/* $OpenBSD: ip_icmp.c,v 1.73 2007/03/18 23:23:17 mpf Exp $ */ /* $NetBSD: ip_icmp.c,v 1.19 1996/02/13 23:42:22 christos Exp $ */ /* @@ -68,6 +68,8 @@ * Research Laboratory (NRL). */ +#include "carp.h" + #include <sys/param.h> #include <sys/systm.h> #include <sys/mbuf.h> @@ -86,6 +88,11 @@ #include <netinet/ip_var.h> #include <netinet/icmp_var.h> +#if NCARP > 0 +#include <net/if_types.h> +#include <netinet/ip_carp.h> +#endif + /* * ICMP routines: error generation, receive packet processing, and * routines to turnaround packets back to the originator, and @@ -450,6 +457,13 @@ icmp_input(struct mbuf *m, ...) printf("deliver to protocol %d\n", icp->icmp_ip.ip_p); #endif icmpsrc.sin_addr = icp->icmp_ip.ip_dst; +#if NCARP > 0 + if (m->m_pkthdr.rcvif->if_type == IFT_CARP && + m->m_pkthdr.rcvif->if_flags & IFF_LINK0 && + carp_lsdrop(m, AF_INET, &icmpsrc.sin_addr.s_addr, + &ip->ip_dst.s_addr)) + goto freeit; +#endif /* * XXX if the packet contains [IPv4 AH TCP], we can't make a * notification to TCP layer. @@ -521,6 +535,13 @@ icmp_input(struct mbuf *m, ...) ip->ip_src = ia->ia_dstaddr.sin_addr; } reflect: +#if NCARP > 0 + if (m->m_pkthdr.rcvif->if_type == IFT_CARP && + m->m_pkthdr.rcvif->if_flags & IFF_LINK0 && + carp_lsdrop(m, AF_INET, &ip->ip_src.s_addr, + &ip->ip_dst.s_addr)) + goto freeit; +#endif /* Free packet atttributes */ if (m->m_flags & M_PKTHDR) m_tag_delete_chain(m); @@ -563,6 +584,13 @@ reflect: } #endif icmpsrc.sin_addr = icp->icmp_ip.ip_dst; +#if NCARP > 0 + if (m->m_pkthdr.rcvif->if_type == IFT_CARP && + m->m_pkthdr.rcvif->if_flags & IFF_LINK0 && + carp_lsdrop(m, AF_INET, &icmpsrc.sin_addr.s_addr, + &ip->ip_dst.s_addr)) + goto freeit; +#endif rt = NULL; rtredirect(sintosa(&icmpsrc), sintosa(&icmpdst), (struct sockaddr *)0, RTF_GATEWAY | RTF_HOST, |