diff options
| -rw-r--r-- | sys/netinet/if_ether.c | 2 | ||||
| -rw-r--r-- | sys/netinet6/nd6.c | 2 | ||||
| -rw-r--r-- | usr.sbin/arp/arp.4 | 25 |
3 files changed, 9 insertions, 20 deletions
diff --git a/sys/netinet/if_ether.c b/sys/netinet/if_ether.c index 972701369d13..e09ad3d47382 100644 --- a/sys/netinet/if_ether.c +++ b/sys/netinet/if_ether.c @@ -114,7 +114,7 @@ VNET_PCPUSTAT_SYSINIT(arpstat); VNET_PCPUSTAT_SYSUNINIT(arpstat); #endif /* VIMAGE */ -VNET_DEFINE_STATIC(int, arp_maxhold) = 1; +VNET_DEFINE_STATIC(int, arp_maxhold) = 16; #define V_arpt_keep VNET(arpt_keep) #define V_arpt_down VNET(arpt_down) diff --git a/sys/netinet6/nd6.c b/sys/netinet6/nd6.c index 5b66375e6613..386eb7cca922 100644 --- a/sys/netinet6/nd6.c +++ b/sys/netinet6/nd6.c @@ -106,7 +106,7 @@ VNET_DEFINE_STATIC(int, nd6_maxndopt) = 10; /* max # of ND options allowed */ VNET_DEFINE(int, nd6_maxnudhint) = 0; /* max # of subsequent upper * layer hints */ -VNET_DEFINE_STATIC(int, nd6_maxqueuelen) = 1; /* max pkts cached in unresolved +VNET_DEFINE_STATIC(int, nd6_maxqueuelen) = 16; /* max pkts cached in unresolved * ND entries */ #define V_nd6_maxndopt VNET(nd6_maxndopt) #define V_nd6_maxqueuelen VNET(nd6_maxqueuelen) diff --git a/usr.sbin/arp/arp.4 b/usr.sbin/arp/arp.4 index f13af95778a8..c9c9002cf908 100644 --- a/usr.sbin/arp/arp.4 +++ b/usr.sbin/arp/arp.4 @@ -40,9 +40,7 @@ The Address Resolution Protocol (ARP) is used to dynamically map between Protocol Addresses (such as IP addresses) and Local Network Addresses (such as Ethernet addresses). -This implementation maps IP addresses to Ethernet, -ARCnet, -or Token Ring addresses. +This implementation maps IP addresses to Ethernet addresses. It is used by all the Ethernet interface drivers. .Pp ARP caches Internet-Ethernet address mappings. @@ -51,9 +49,10 @@ ARP queues the message which requires the mapping and broadcasts a message on the associated network requesting the address mapping. If a response is provided, the new mapping is cached and any pending message is transmitted. -ARP will queue at most one packet while waiting for a response to a -mapping request; -only the most recently ``transmitted'' packet is kept. +ARP will queue at most +.Va net.link.ether.inet.maxhold +packets while waiting for a response to a mapping request; +only the most recently ``transmitted'' packets are kept. If the target host does not respond after several requests, the host is considered to be down allowing an error to be returned to transmission attempts. @@ -65,17 +64,7 @@ for a non-responding destination host, and .Er EHOSTUNREACH for a non-responding router. .Pp -The ARP cache is stored in the system routing table as -dynamically-created host routes. -The route to a directly-attached Ethernet network is installed as a -.Dq cloning -route (one with the -.Li RTF_CLONING -flag set), -causing routes to individual hosts on that network to be created on -demand. -These routes time out periodically (normally 20 minutes after validated; -entries are not validated when not in use). +The ARP cache is stored in per-interface link-level table. .Pp ARP entries may be added, deleted or changed with the .Xr arp 8 @@ -173,7 +162,7 @@ Default is 1200 seconds. .It Va maxhold How many packets to hold in the per-entry output queue while the entry is being resolved. -Default is one packet. +Default is 16 packets. .It Va maxtries Number of retransmits before a host is considered down and an error is returned. |