From: Konrad Sewiłło-Jopek <kjo...@gmail.com>

Provide sticky ARP flag for network interface which marks it as the
"sticky" one similarly to what we have for bridges. Once interface is
marked sticky, any address resolved using the ARP will be saved as a
static one in the ARP table. Such functionality may be used to prevent
ARP spoofing or to decrease latencies in Ethernet networks.

The drawbacks include potential limitations in usage of ARP-based
load-balancers and high-availability solutions such as carp(4).

The implemented option is disabled by default, therefore should not
impact the default behaviour of the networking stack.

Sponsored by:           Conclusive Engineering sp. z o.o.
Reviewed By:            melifaro, pauamma_gundo.com
Differential Revision: https://reviews.freebsd.org/D35314
MFC after:              2 weeks
---
 newlib/libc/sys/rtems/include/net/if.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/newlib/libc/sys/rtems/include/net/if.h 
b/newlib/libc/sys/rtems/include/net/if.h
index e90d4d240..3f3b8a3b5 100644
--- a/newlib/libc/sys/rtems/include/net/if.h
+++ b/newlib/libc/sys/rtems/include/net/if.h
@@ -160,6 +160,7 @@ struct if_data {
 #define        IFF_PPROMISC    0x20000         /* (n) user-requested promisc 
mode */
 #define        IFF_MONITOR     0x40000         /* (n) user-requested monitor 
mode */
 #define        IFF_STATICARP   0x80000         /* (n) static ARP */
+#define        IFF_STICKYARP   0x100000        /* (n) sticky ARP */
 #define        IFF_DYING       0x200000        /* (n) interface is winding 
down */
 #define        IFF_RENAMING    0x400000        /* (n) interface is being 
renamed */
 #define        IFF_NOGROUP     0x800000        /* (n) interface is not part of 
any groups */
-- 
2.35.3

_______________________________________________
devel mailing list
devel@rtems.org
http://lists.rtems.org/mailman/listinfo/devel

Reply via email to