diff options
Diffstat (limited to 'net/ipv6')
| -rw-r--r-- | net/ipv6/addrconf.c | 10 | ||||
| -rw-r--r-- | net/ipv6/ndisc.c | 17 |
2 files changed, 21 insertions, 6 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 8381288a0d6e..17756f3ed33b 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -394,6 +394,7 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev) ndev->cnf.addr_gen_mode = IN6_ADDR_GEN_MODE_STABLE_PRIVACY; ndev->cnf.mtu6 = dev->mtu; + ndev->ra_mtu = 0; ndev->nd_parms = neigh_parms_alloc(dev, &nd_tbl); if (!ndev->nd_parms) { kfree(ndev); @@ -3849,6 +3850,7 @@ restart: } idev->tstamp = jiffies; + idev->ra_mtu = 0; /* Last: Shot the device (if unregistered) */ if (unregister) { @@ -5543,6 +5545,7 @@ static inline size_t inet6_ifla6_size(void) + nla_total_size(ICMP6_MIB_MAX * 8) /* IFLA_INET6_ICMP6STATS */ + nla_total_size(sizeof(struct in6_addr)) /* IFLA_INET6_TOKEN */ + nla_total_size(1) /* IFLA_INET6_ADDR_GEN_MODE */ + + nla_total_size(4) /* IFLA_INET6_RA_MTU */ + 0; } @@ -5651,6 +5654,10 @@ static int inet6_fill_ifla6_attrs(struct sk_buff *skb, struct inet6_dev *idev, if (nla_put_u8(skb, IFLA_INET6_ADDR_GEN_MODE, idev->cnf.addr_gen_mode)) goto nla_put_failure; + if (idev->ra_mtu && + nla_put_u32(skb, IFLA_INET6_RA_MTU, idev->ra_mtu)) + goto nla_put_failure; + return 0; nla_put_failure: @@ -5767,6 +5774,9 @@ update_lft: static const struct nla_policy inet6_af_policy[IFLA_INET6_MAX + 1] = { [IFLA_INET6_ADDR_GEN_MODE] = { .type = NLA_U8 }, [IFLA_INET6_TOKEN] = { .len = sizeof(struct in6_addr) }, + [IFLA_INET6_RA_MTU] = { .type = NLA_REJECT, + .reject_message = + "IFLA_INET6_RA_MTU can not be set" }, }; static int check_addr_gen_mode(int mode) diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index c467c6419893..4b098521a44c 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1391,12 +1391,6 @@ skip_defrtr: } } - /* - * Send a notify if RA changed managed/otherconf flags or timer settings - */ - if (send_ifinfo_notify) - inet6_ifinfo_notify(RTM_NEWLINK, in6_dev); - skip_linkparms: /* @@ -1496,6 +1490,11 @@ skip_routeinfo: memcpy(&n, ((u8 *)(ndopts.nd_opts_mtu+1))+2, sizeof(mtu)); mtu = ntohl(n); + if (in6_dev->ra_mtu != mtu) { + in6_dev->ra_mtu = mtu; + send_ifinfo_notify = true; + } + if (mtu < IPV6_MIN_MTU || mtu > skb->dev->mtu) { ND_PRINTK(2, warn, "RA: invalid mtu: %d\n", mtu); } else if (in6_dev->cnf.mtu6 != mtu) { @@ -1519,6 +1518,12 @@ skip_routeinfo: ND_PRINTK(2, warn, "RA: invalid RA options\n"); } out: + /* Send a notify if RA changed managed/otherconf flags or + * timer settings or ra_mtu value + */ + if (send_ifinfo_notify) + inet6_ifinfo_notify(RTM_NEWLINK, in6_dev); + fib6_info_release(rt); if (neigh) neigh_release(neigh); |