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netdev-bsd: implement netdev_arp_lookup for NetBSD

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Signed-off-by: YAMAMOTO Takashi <yamt@mwd.biglobe.ne.jp>
Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
YAMAMOTO Takashi
2013-08-14 05:57:41 +09:00
committed by Ben Pfaff
parent 2a833280b4
commit 7b6d4b2ac8
1 changed files with 61 additions and 2 deletions
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63
lib/netdev-bsd.c
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@@ -42,6 +42,8 @@
#include <sys/sysctl.h>
#if defined(__NetBSD__)
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/if_inarp.h>
#endif
#include "rtbsd.h"
@@ -1332,6 +1334,63 @@ netdev_bsd_get_next_hop(const struct in_addr *host OVS_UNUSED,
#endif
}
static int
netdev_bsd_arp_lookup(const struct netdev *netdev OVS_UNUSED,
ovs_be32 ip OVS_UNUSED,
uint8_t mac[ETH_ADDR_LEN] OVS_UNUSED)
{
#if defined(__NetBSD__)
const struct rt_msghdr *rtm;
size_t needed;
char *buf;
const char *cp;
const char *ep;
int mib[6];
int error;
buf = NULL;
mib[0] = CTL_NET;
mib[1] = PF_ROUTE;
mib[2] = 0;
mib[3] = AF_INET;
mib[4] = NET_RT_FLAGS;
mib[5] = RTF_LLINFO;
if (sysctl(mib, 6, NULL, &needed, NULL, 0) == -1) {
error = errno;
goto error;
}
buf = xmalloc(needed);
if (sysctl(mib, 6, buf, &needed, NULL, 0) == -1) {
error = errno;
goto error;
}
ep = buf + needed;
for (cp = buf; cp < ep; cp += rtm->rtm_msglen) {
const struct sockaddr_inarp *sina;
const struct sockaddr_dl *sdl;
rtm = (const void *)cp;
sina = (const void *)(rtm + 1);
if (ip != sina->sin_addr.s_addr) {
continue;
}
sdl = (const void *)
((const char *)(const void *)sina + RT_ROUNDUP(sina->sin_len));
if (sdl->sdl_alen == ETH_ADDR_LEN) {
memcpy(mac, &sdl->sdl_data[sdl->sdl_nlen], ETH_ADDR_LEN);
error = 0;
goto error;
}
}
error = ENXIO;
error:
free(buf);
return error;
#else
return EOPNOTSUPP;
#endif
}
static void
make_in4_sockaddr(struct sockaddr *sa, struct in_addr addr)
{
@@ -1460,7 +1519,7 @@ const struct netdev_class netdev_bsd_class = {
NULL, /* add_router */
netdev_bsd_get_next_hop,
NULL, /* get_status */
NULL, /* arp_lookup */
netdev_bsd_arp_lookup, /* arp_lookup */
netdev_bsd_update_flags,
@@ -1523,7 +1582,7 @@ const struct netdev_class netdev_tap_class = {
NULL, /* add_router */
netdev_bsd_get_next_hop,
NULL, /* get_status */
NULL, /* arp_lookup */
netdev_bsd_arp_lookup, /* arp_lookup */
netdev_bsd_update_flags,