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Support ARP for 802 networks

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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
0437c8e3b1, presumably because comments implied it was used only by
FDDI or Token Ring.

Fixes: 0437c8e3b1 ("Remove support for FDDI networks.")
Reviewed-by: emaste
Signed-off-by: Denny Page <dennypage@me.com>
Pull-request: https://github.com/freebsd/freebsd-src/pull/1166
This commit is contained in:
Denny Page 2024-04-13 10:16:08 -07:00 committed by Ed Maste
parent c5989febcc
commit fcdf9a1989
2 changed files with 5 additions and 1 deletions
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2
sys/net/if_arp.h
View file

@ -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 */

4
sys/netinet/if_ether.c
View file

@ -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";