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| author |   Andy Gospodarek <gospo@cumulusnetworks.com> | 2015-07-07 13:56:57 -0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-07-08 23:34:53 -0700 |
| commit | 974d7af5fcc295dcf8315255142b2fe44fd74b0c (patch) | |
| tree | 63edec7d12d90ec24d170f48a002c6bb9b07318e /net | |
| parent | sfc: Ensure down_write(&filter_sem) and up_write() are matched before calling efx_net_open() (diff) | |
| download | linux-dev-974d7af5fcc295dcf8315255142b2fe44fd74b0c.tar.xz linux-dev-974d7af5fcc295dcf8315255142b2fe44fd74b0c.zip | |
ipv4: add support for linkdown sysctl to netconf
This kernel patch exports the value of the new
ignore_routes_with_linkdown via netconf.
v2: changes to notify userspace via netlink when sysctl values change
and proposed for 'net' since this could be considered a bugfix
Signed-off-by: Andy Gospodarek <gospo@cumulusnetworks.com>
Suggested-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/devinet.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 7498716e8f54..e813196c91c7 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -1740,6 +1740,8 @@ static int inet_netconf_msgsize_devconf(int type) size += nla_total_size(4); if (type == -1 || type == NETCONFA_PROXY_NEIGH) size += nla_total_size(4); + if (type == -1 || type == NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN) + size += nla_total_size(4); return size; } @@ -1780,6 +1782,10 @@ static int inet_netconf_fill_devconf(struct sk_buff *skb, int ifindex, nla_put_s32(skb, NETCONFA_PROXY_NEIGH, IPV4_DEVCONF(*devconf, PROXY_ARP)) < 0) goto nla_put_failure; + if ((type == -1 || type == NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN) && + nla_put_s32(skb, NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN, + IPV4_DEVCONF(*devconf, IGNORE_ROUTES_WITH_LINKDOWN)) < 0) + goto nla_put_failure; nlmsg_end(skb, nlh); return 0; @@ -1819,6 +1825,7 @@ static const struct nla_policy devconf_ipv4_policy[NETCONFA_MAX+1] = { [NETCONFA_FORWARDING] = { .len = sizeof(int) }, [NETCONFA_RP_FILTER] = { .len = sizeof(int) }, [NETCONFA_PROXY_NEIGH] = { .len = sizeof(int) }, + [NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN] = { .len = sizeof(int) }, }; static int inet_netconf_get_devconf(struct sk_buff *in_skb, @@ -2048,6 +2055,12 @@ static int devinet_conf_proc(struct ctl_table *ctl, int write, inet_netconf_notify_devconf(net, NETCONFA_PROXY_NEIGH, ifindex, cnf); } + if (i == IPV4_DEVCONF_IGNORE_ROUTES_WITH_LINKDOWN - 1 && + new_value != old_value) { + ifindex = devinet_conf_ifindex(net, cnf); + inet_netconf_notify_devconf(net, NETCONFA_IGNORE_ROUTES_WITH_LINKDOWN, + ifindex, cnf); + } } return ret; |