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net/ipv6: Add flags and table id to ip6_nh_lookup_table

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onlink verification needs to do a lookup in potentially different
table than the table in fib6_config and without the RT6_LOOKUP_F_IFACE
flag. Change ip6_nh_lookup_table to take table id and flags as input
arguments. Both verifications want to ignore link state, so add that
flag can stay in the lookup helper.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2018-01-25 16:55:08 -08:00 committed by David S. Miller
parent 1edce99fa8
commit f4797b33db
1 changed files with 8 additions and 4 deletions
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12
net/ipv6/route.c
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@ -2440,7 +2440,8 @@ static int ip6_convert_metrics(struct mx6_config *mxc,
static struct rt6_info *ip6_nh_lookup_table(struct net *net,
struct fib6_config *cfg,
const struct in6_addr *gw_addr)
const struct in6_addr *gw_addr,
u32 tbid, int flags)
{
struct flowi6 fl6 = {
.flowi6_oif = cfg->fc_ifindex,
@ -2449,15 +2450,15 @@ static struct rt6_info *ip6_nh_lookup_table(struct net *net,
};
struct fib6_table *table;
struct rt6_info *rt;
int flags = RT6_LOOKUP_F_IFACE | RT6_LOOKUP_F_IGNORE_LINKSTATE;
table = fib6_get_table(net, cfg->fc_table);
table = fib6_get_table(net, tbid);
if (!table)
return NULL;
if (!ipv6_addr_any(&cfg->fc_prefsrc))
flags |= RT6_LOOKUP_F_HAS_SADDR;
flags |= RT6_LOOKUP_F_IGNORE_LINKSTATE;
rt = ip6_pol_route(net, table, cfg->fc_ifindex, &fl6, flags);
/* if table lookup failed, fall back to full lookup */
@ -2480,7 +2481,10 @@ static int ip6_route_check_nh(struct net *net,
int err = -EHOSTUNREACH;
if (cfg->fc_table) {
grt = ip6_nh_lookup_table(net, cfg, gw_addr);
int flags = RT6_LOOKUP_F_IFACE;
grt = ip6_nh_lookup_table(net, cfg, gw_addr,
cfg->fc_table, flags);
if (grt) {
if (grt->rt6i_flags & RTF_GATEWAY ||
(dev && dev != grt->dst.dev)) {