diff options
| author | David Ahern <dsa@cumulusnetworks.com> | 2015-09-02 23:58:36 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-09-15 22:01:41 +0300 |
| commit | c36ba6603a1154ac617d023bbcc062a12afb258b (patch) | |
| tree | 4ce0ed1e81dcc34125b19cdb7d4c6e431b1bf4bd /net/ipv4/route.c | |
| parent | b7503e0cdb5dbec5d201aa69d8888c14679b5ae8 (diff) | |
| download | linux-c36ba6603a1154ac617d023bbcc062a12afb258b.tar.xz | |
net: Allow user to get table id from route lookup
rt_fill_info which is called for 'route get' requests hardcodes the
table id as RT_TABLE_MAIN which is not correct when multiple tables
are used. Use the newly added table id in the rtable to send back
the correct table similar to what is done for IPv6.
To maintain current ABI a new request flag, RTM_F_LOOKUP_TABLE, is
added to indicate the actual table is wanted versus the hardcoded
response.
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/route.c')
| -rw-r--r-- | net/ipv4/route.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 92acc95b7578..da427a4a33fe 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -2305,7 +2305,7 @@ struct rtable *ip_route_output_flow(struct net *net, struct flowi4 *flp4, } EXPORT_SYMBOL_GPL(ip_route_output_flow); -static int rt_fill_info(struct net *net, __be32 dst, __be32 src, +static int rt_fill_info(struct net *net, __be32 dst, __be32 src, u32 table_id, struct flowi4 *fl4, struct sk_buff *skb, u32 portid, u32 seq, int event, int nowait, unsigned int flags) { @@ -2325,8 +2325,8 @@ static int rt_fill_info(struct net *net, __be32 dst, __be32 src, r->rtm_dst_len = 32; r->rtm_src_len = 0; r->rtm_tos = fl4->flowi4_tos; - r->rtm_table = RT_TABLE_MAIN; - if (nla_put_u32(skb, RTA_TABLE, RT_TABLE_MAIN)) + r->rtm_table = table_id; + if (nla_put_u32(skb, RTA_TABLE, table_id)) goto nla_put_failure; r->rtm_type = rt->rt_type; r->rtm_scope = RT_SCOPE_UNIVERSE; @@ -2431,6 +2431,7 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh) int err; int mark; struct sk_buff *skb; + u32 table_id = RT_TABLE_MAIN; err = nlmsg_parse(nlh, sizeof(*rtm), tb, RTA_MAX, rtm_ipv4_policy); if (err < 0) @@ -2500,7 +2501,10 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh) if (rtm->rtm_flags & RTM_F_NOTIFY) rt->rt_flags |= RTCF_NOTIFY; - err = rt_fill_info(net, dst, src, &fl4, skb, + if (rtm->rtm_flags & RTM_F_LOOKUP_TABLE) + table_id = rt->rt_table_id; + + err = rt_fill_info(net, dst, src, table_id, &fl4, skb, NETLINK_CB(in_skb).portid, nlh->nlmsg_seq, RTM_NEWROUTE, 0, 0); if (err < 0) |