From fcdf9a19893b9b5beb7a21407de507f0ae4c500b Mon Sep 17 00:00:00 2001 From: Denny Page Date: Sat, 13 Apr 2024 10:16:08 -0700 Subject: [PATCH] Support ARP for 802 networks This is used by 802.3 Ethernet. (Also be used by 802.4 Token Bus and 802.5 Token Ring, but we don't support those.) This was accidentally removed along with FDDI support in commit 0437c8e3b198, presumably because comments implied it was used only by FDDI or Token Ring. Fixes: 0437c8e3b198 ("Remove support for FDDI networks.") Reviewed-by: emaste Signed-off-by: Denny Page Pull-request: https://github.com/freebsd/freebsd-src/pull/1166 --- sys/net/if_arp.h | 2 +- sys/netinet/if_ether.c | 4 ++++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/sys/net/if_arp.h b/sys/net/if_arp.h index 0c3ee5d7acc..6a944276674 100644 --- a/sys/net/if_arp.h +++ b/sys/net/if_arp.h @@ -45,7 +45,7 @@ struct arphdr { u_short ar_hrd; /* format of hardware address */ #define ARPHRD_ETHER 1 /* ethernet hardware format */ -#define ARPHRD_IEEE802 6 /* token-ring hardware format */ +#define ARPHRD_IEEE802 6 /* 802.2 networks (ethernet/tb/tr) */ #define ARPHRD_FRELAY 15 /* frame relay hardware format */ #define ARPHRD_IEEE1394 24 /* firewire hardware format */ #define ARPHRD_INFINIBAND 32 /* infiniband hardware format */ diff --git a/sys/netinet/if_ether.c b/sys/netinet/if_ether.c index 4b3d2a91d99..543e6a3922f 100644 --- a/sys/netinet/if_ether.c +++ b/sys/netinet/if_ether.c @@ -682,6 +682,10 @@ arpintr(struct mbuf *m) hlen = ETHER_ADDR_LEN; /* RFC 826 */ layer = "ethernet"; break; + case ARPHRD_IEEE802: + hlen = ETHER_ADDR_LEN; + layer = "ieee802"; + break; case ARPHRD_INFINIBAND: hlen = 20; /* RFC 4391, INFINIBAND_ALEN */ layer = "infiniband";