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/freebsd-10.1-release/sys/net/ | ||
H A D | route.h | diff 15652 Mon May 06 15:42:13 MDT 1996 wollman Add three new route flags to help determine what sort of address the destination represents. For IP: - Iff it is a host route, RTF_LOCAL and RTF_BROADCAST indicate local (belongs to this host) and broadcast addresses, respectively. - For all routes, RTF_MULTICAST is set if the destination is multicast. The RTF_BROADCAST flag is used by ip_output() to eliminate a call to in_broadcast() in a common case; this gives about 1% in our packet-generation experiments. All three flags might be used (although they aren't now) to determine whether a packet can be forwarded; a given host route can represent a forwardable address if: (rt->rt_flags & (RTF_HOST | RTF_LOCAL | RTF_BROADCAST | RTF_MULTICAST)) == RTF_HOST Obviously, one still has to do all the work if a host route is not present, but this code allows one to cache the results of such a lookup if rtalloc1() is called without masking RTF_PRCLONING. |
/freebsd-10.1-release/sys/netinet/ | ||
H A D | in_rmx.c | diff 15652 Mon May 06 15:42:13 MDT 1996 wollman Add three new route flags to help determine what sort of address the destination represents. For IP: - Iff it is a host route, RTF_LOCAL and RTF_BROADCAST indicate local (belongs to this host) and broadcast addresses, respectively. - For all routes, RTF_MULTICAST is set if the destination is multicast. The RTF_BROADCAST flag is used by ip_output() to eliminate a call to in_broadcast() in a common case; this gives about 1% in our packet-generation experiments. All three flags might be used (although they aren't now) to determine whether a packet can be forwarded; a given host route can represent a forwardable address if: (rt->rt_flags & (RTF_HOST | RTF_LOCAL | RTF_BROADCAST | RTF_MULTICAST)) == RTF_HOST Obviously, one still has to do all the work if a host route is not present, but this code allows one to cache the results of such a lookup if rtalloc1() is called without masking RTF_PRCLONING. |
H A D | ip_output.c | diff 15652 Mon May 06 15:42:13 MDT 1996 wollman Add three new route flags to help determine what sort of address the destination represents. For IP: - Iff it is a host route, RTF_LOCAL and RTF_BROADCAST indicate local (belongs to this host) and broadcast addresses, respectively. - For all routes, RTF_MULTICAST is set if the destination is multicast. The RTF_BROADCAST flag is used by ip_output() to eliminate a call to in_broadcast() in a common case; this gives about 1% in our packet-generation experiments. All three flags might be used (although they aren't now) to determine whether a packet can be forwarded; a given host route can represent a forwardable address if: (rt->rt_flags & (RTF_HOST | RTF_LOCAL | RTF_BROADCAST | RTF_MULTICAST)) == RTF_HOST Obviously, one still has to do all the work if a host route is not present, but this code allows one to cache the results of such a lookup if rtalloc1() is called without masking RTF_PRCLONING. |
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