diff options
Diffstat (limited to 'usr/src/cmd/cmd-inet/sbin/dhcpagent/bound.c')
| -rw-r--r-- | usr/src/cmd/cmd-inet/sbin/dhcpagent/bound.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/usr/src/cmd/cmd-inet/sbin/dhcpagent/bound.c b/usr/src/cmd/cmd-inet/sbin/dhcpagent/bound.c index 0e5d496af2..8fc093f684 100644 --- a/usr/src/cmd/cmd-inet/sbin/dhcpagent/bound.c +++ b/usr/src/cmd/cmd-inet/sbin/dhcpagent/bound.c @@ -455,13 +455,15 @@ void dhcp_bound_complete(dhcp_smach_t *dsmp) { PKT_LIST *ack = dsmp->dsm_ack; + DHCP_OPT *mtu; DHCP_OPT *routes; DHCP_OPT *router_list; int i; DHCPSTATE oldstate; dhcp_lif_t *lif; boolean_t ignore_routes = B_FALSE, ignore_router_list = B_FALSE; - boolean_t manage_classless_routes; + boolean_t ignore_mtu = B_FALSE; + boolean_t manage_classless_routes, manage_mtu; /* * Do bound state entry processing only if running IPv4. There's no @@ -484,6 +486,7 @@ dhcp_bound_complete(dhcp_smach_t *dsmp) manage_classless_routes = df_get_bool(dsmp->dsm_name, dsmp->dsm_isv6, DF_CLASSLESS_ROUTES); + manage_mtu = df_get_bool(dsmp->dsm_name, dsmp->dsm_isv6, DF_SET_MTU); /* * Check to see if the default route or classless routes options appear @@ -491,6 +494,9 @@ dhcp_bound_complete(dhcp_smach_t *dsmp) */ for (i = 0; i < dsmp->dsm_pillen; i++) { switch (dsmp->dsm_pil[i]) { + case CD_MTU: + ignore_mtu = B_TRUE; + break; case CD_ROUTER: ignore_router_list = B_TRUE; break; @@ -501,8 +507,23 @@ dhcp_bound_complete(dhcp_smach_t *dsmp) } /* - * XXX Set interface MTU... + * If the server provides a valid MTU option, and the operator has not + * disabled MTU management, configure the MTU on the interface now. + * The SIOCSLIFMTU ioctl does not work for IPv4 logicals. */ + if (manage_mtu && !ignore_mtu && strchr(lif->lif_name, ':') == NULL && + (mtu = ack->opts[CD_MTU]) != NULL && + mtu->len == sizeof (uint16_t)) { + uint16_t mtuval; + + (void) memcpy(&mtuval, mtu->value, sizeof (mtuval)); + mtuval = ntohs(mtuval); + + if (!set_lif_mtu(lif, mtuval)) { + dhcpmsg(MSG_ERR, "dhcp_bound_complete: could not set " + "interface MTU to %u", (uint_t)mtuval); + } + } /* * XXX Get classless routes... |