litmus-rt.git - The LITMUS^RT kernel.

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The LITMUS^RT kernel.

Bjoern Brandenburg

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kwb">unsigned long nfmark; unsigned long newmark; enum ip_conntrack_info ctinfo; struct ip_conntrack *ct = ip_conntrack_get((*pskb), &ctinfo); if (ct) { switch(markinfo->mode) { case IPT_CONNMARK_SET: newmark = (ct->mark & ~markinfo->mask) | markinfo->mark; if (newmark != ct->mark) ct->mark = newmark; break; case IPT_CONNMARK_SAVE: newmark = (ct->mark & ~markinfo->mask) | ((*pskb)->nfmark & markinfo->mask); if (ct->mark != newmark) ct->mark = newmark; break; case IPT_CONNMARK_RESTORE: nfmark = (*pskb)->nfmark; diff = (ct->mark ^ nfmark) & markinfo->mask; if (diff != 0) { (*pskb)->nfmark = nfmark ^ diff; (*pskb)->nfcache |= NFC_ALTERED; } break; } } return IPT_CONTINUE; } static int checkentry(const char *tablename, const struct ipt_entry *e, void *targinfo, unsigned int targinfosize, unsigned int hook_mask) { struct ipt_connmark_target_info *matchinfo = targinfo; if (targinfosize != IPT_ALIGN(sizeof(struct ipt_connmark_target_info))) { printk(KERN_WARNING "CONNMARK: targinfosize %u != %Zu\n", targinfosize, IPT_ALIGN(sizeof(struct ipt_connmark_target_info))); return 0; } if (matchinfo->mode == IPT_CONNMARK_RESTORE) { if (strcmp(tablename, "mangle") != 0) { printk(KERN_WARNING "CONNMARK: restore can only be called from \"mangle\" table, not \"%s\"\n", tablename); return 0; } } return 1; } static struct ipt_target ipt_connmark_reg = { .name = "CONNMARK", .target = &target, .checkentry = &checkentry, .me = THIS_MODULE }; static int __init init(void) { return ipt_register_target(&ipt_connmark_reg); } static void __exit fini(void) { ipt_unregister_target(&ipt_connmark_reg); } module_init(init); module_exit(fini);


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