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[NetLabel]: core network changes

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Changes to the core network stack to support the NetLabel subsystem.  This
includes changes to the IPv4 option handling to support CIPSO labels.

Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paul Moore
2006-08-03 16:46:20 -07:00
committed by David S. Miller
parent 8802f616f6
commit 11a03f78fb
6 changed files with 563 additions and 2 deletions
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19
net/ipv4/ip_options.c
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@@ -24,6 +24,7 @@
#include <net/ip.h>
#include <net/icmp.h>
#include <net/route.h>
#include <net/cipso_ipv4.h>
/*
* Write options to IP header, record destination address to
@@ -194,6 +195,13 @@ int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb)
dopt->is_strictroute = sopt->is_strictroute;
}
}
if (sopt->cipso) {
optlen = sptr[sopt->cipso+1];
dopt->cipso = dopt->optlen+sizeof(struct iphdr);
memcpy(dptr, sptr+sopt->cipso, optlen);
dptr += optlen;
dopt->optlen += optlen;
}
while (dopt->optlen & 3) {
*dptr++ = IPOPT_END;
dopt->optlen++;
@@ -434,6 +442,17 @@ int ip_options_compile(struct ip_options * opt, struct sk_buff * skb)
if (optptr[2] == 0 && optptr[3] == 0)
opt->router_alert = optptr - iph;
break;
case IPOPT_CIPSO:
if (opt->cipso) {
pp_ptr = optptr;
goto error;
}
opt->cipso = optptr - iph;
if (cipso_v4_validate(&optptr)) {
pp_ptr = optptr;
goto error;
}
break;
case IPOPT_SEC:
case IPOPT_SID:
default: