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-rw-r--r--net/ipv4/af_inet.c13
-rw-r--r--net/ipv4/arp.c15
-rw-r--r--net/ipv4/fib_frontend.c63
-rw-r--r--net/ipv4/fib_semantics.c44
-rw-r--r--net/ipv4/fib_trie.c7
-rw-r--r--net/ipv4/icmp.c9
-rw-r--r--net/ipv4/ip_fragment.c18
-rw-r--r--net/ipv4/ip_output.c7
-rw-r--r--net/ipv4/route.c8
-rw-r--r--net/ipv4/udp.c22
10 files changed, 162 insertions, 44 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index cc4e498a0ccf..c8b855882fa5 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -119,6 +119,7 @@
#ifdef CONFIG_IP_MROUTE
#include <linux/mroute.h>
#endif
+#include <net/vrf.h>
/* The inetsw table contains everything that inet_create needs to
@@ -427,6 +428,7 @@ int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
struct net *net = sock_net(sk);
unsigned short snum;
int chk_addr_ret;
+ int tb_id = RT_TABLE_LOCAL;
int err;
/* If the socket has its own bind function then use it. (RAW) */
@@ -448,7 +450,16 @@ int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
goto out;
}
- chk_addr_ret = inet_addr_type(net, addr->sin_addr.s_addr);
+ if (sk->sk_bound_dev_if) {
+ struct net_device *dev;
+
+ rcu_read_lock();
+ dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if);
+ if (dev)
+ tb_id = vrf_dev_table_rcu(dev) ? : tb_id;
+ rcu_read_unlock();
+ }
+ chk_addr_ret = inet_addr_type_table(net, addr->sin_addr.s_addr, tb_id);
/* Not specified by any standard per-se, however it breaks too
* many applications when removed. It is unfortunate since
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 34a308573f4b..30409b75e925 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -233,7 +233,7 @@ static int arp_constructor(struct neighbour *neigh)
return -EINVAL;
}
- neigh->type = inet_addr_type(dev_net(dev), addr);
+ neigh->type = inet_addr_type_dev_table(dev_net(dev), dev, addr);
parms = in_dev->arp_parms;
__neigh_parms_put(neigh->parms);
@@ -343,7 +343,7 @@ static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb)
switch (IN_DEV_ARP_ANNOUNCE(in_dev)) {
default:
case 0: /* By default announce any local IP */
- if (skb && inet_addr_type(dev_net(dev),
+ if (skb && inet_addr_type_dev_table(dev_net(dev), dev,
ip_hdr(skb)->saddr) == RTN_LOCAL)
saddr = ip_hdr(skb)->saddr;
break;
@@ -351,7 +351,8 @@ static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb)
if (!skb)
break;
saddr = ip_hdr(skb)->saddr;
- if (inet_addr_type(dev_net(dev), saddr) == RTN_LOCAL) {
+ if (inet_addr_type_dev_table(dev_net(dev), dev,
+ saddr) == RTN_LOCAL) {
/* saddr should be known to target */
if (inet_addr_onlink(in_dev, target, saddr))
break;
@@ -751,7 +752,7 @@ static int arp_process(struct sock *sk, struct sk_buff *skb)
/* Special case: IPv4 duplicate address detection packet (RFC2131) */
if (sip == 0) {
if (arp->ar_op == htons(ARPOP_REQUEST) &&
- inet_addr_type(net, tip) == RTN_LOCAL &&
+ inet_addr_type_dev_table(net, dev, tip) == RTN_LOCAL &&
!arp_ignore(in_dev, sip, tip))
arp_send(ARPOP_REPLY, ETH_P_ARP, sip, dev, tip, sha,
dev->dev_addr, sha);
@@ -811,16 +812,18 @@ static int arp_process(struct sock *sk, struct sk_buff *skb)
n = __neigh_lookup(&arp_tbl, &sip, dev, 0);
if (IN_DEV_ARP_ACCEPT(in_dev)) {
+ unsigned int addr_type = inet_addr_type_dev_table(net, dev, sip);
+
/* Unsolicited ARP is not accepted by default.
It is possible, that this option should be enabled for some
devices (strip is candidate)
*/
is_garp = arp->ar_op == htons(ARPOP_REQUEST) && tip == sip &&
- inet_addr_type(net, sip) == RTN_UNICAST;
+ addr_type == RTN_UNICAST;
if (!n &&
((arp->ar_op == htons(ARPOP_REPLY) &&
- inet_addr_type(net, sip) == RTN_UNICAST) || is_garp))
+ addr_type == RTN_UNICAST) || is_garp))
n = __neigh_lookup(&arp_tbl, &sip, dev, 1);
}
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 6b98de0d7949..7fa277176c33 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -45,6 +45,7 @@
#include <net/ip_fib.h>
#include <net/rtnetlink.h>
#include <net/xfrm.h>
+#include <net/vrf.h>
#ifndef CONFIG_IP_MULTIPLE_TABLES
@@ -211,12 +212,12 @@ void fib_flush_external(struct net *net)
*/
static inline unsigned int __inet_dev_addr_type(struct net *net,
const struct net_device *dev,
- __be32 addr)
+ __be32 addr, int tb_id)
{
struct flowi4 fl4 = { .daddr = addr };
struct fib_result res;
unsigned int ret = RTN_BROADCAST;
- struct fib_table *local_table;
+ struct fib_table *table;
if (ipv4_is_zeronet(addr) || ipv4_is_lbcast(addr))
return RTN_BROADCAST;
@@ -225,10 +226,10 @@ static inline unsigned int __inet_dev_addr_type(struct net *net,
rcu_read_lock();
- local_table = fib_get_table(net, RT_TABLE_LOCAL);
- if (local_table) {
+ table = fib_get_table(net, tb_id);
+ if (table) {
ret = RTN_UNICAST;
- if (!fib_table_lookup(local_table, &fl4, &res, FIB_LOOKUP_NOREF)) {
+ if (!fib_table_lookup(table, &fl4, &res, FIB_LOOKUP_NOREF)) {
if (!dev || dev == res.fi->fib_dev)
ret = res.type;
}
@@ -238,19 +239,40 @@ static inline unsigned int __inet_dev_addr_type(struct net *net,
return ret;
}
+unsigned int inet_addr_type_table(struct net *net, __be32 addr, int tb_id)
+{
+ return __inet_dev_addr_type(net, NULL, addr, tb_id);
+}
+EXPORT_SYMBOL(inet_addr_type_table);
+
unsigned int inet_addr_type(struct net *net, __be32 addr)
{
- return __inet_dev_addr_type(net, NULL, addr);
+ return __inet_dev_addr_type(net, NULL, addr, RT_TABLE_LOCAL);
}
EXPORT_SYMBOL(inet_addr_type);
unsigned int inet_dev_addr_type(struct net *net, const struct net_device *dev,
__be32 addr)
{
- return __inet_dev_addr_type(net, dev, addr);
+ int rt_table = vrf_dev_table(dev) ? : RT_TABLE_LOCAL;
+
+ return __inet_dev_addr_type(net, dev, addr, rt_table);
}
EXPORT_SYMBOL(inet_dev_addr_type);
+/* inet_addr_type with dev == NULL but using the table from a dev
+ * if one is associated
+ */
+unsigned int inet_addr_type_dev_table(struct net *net,
+ const struct net_device *dev,
+ __be32 addr)
+{
+ int rt_table = vrf_dev_table(dev) ? : RT_TABLE_LOCAL;
+
+ return __inet_dev_addr_type(net, NULL, addr, rt_table);
+}
+EXPORT_SYMBOL(inet_addr_type_dev_table);
+
__be32 fib_compute_spec_dst(struct sk_buff *skb)
{
struct net_device *dev = skb->dev;
@@ -309,7 +331,9 @@ static int __fib_validate_source(struct sk_buff *skb, __be32 src, __be32 dst,
bool dev_match;
fl4.flowi4_oif = 0;
- fl4.flowi4_iif = oif ? : LOOPBACK_IFINDEX;
+ fl4.flowi4_iif = vrf_master_ifindex_rcu(dev);
+ if (!fl4.flowi4_iif)
+ fl4.flowi4_iif = oif ? : LOOPBACK_IFINDEX;
fl4.daddr = src;
fl4.saddr = dst;
fl4.flowi4_tos = tos;
@@ -339,6 +363,9 @@ static int __fib_validate_source(struct sk_buff *skb, __be32 src, __be32 dst,
if (nh->nh_dev == dev) {
dev_match = true;
break;
+ } else if (vrf_master_ifindex_rcu(nh->nh_dev) == dev->ifindex) {
+ dev_match = true;
+ break;
}
}
#else
@@ -496,9 +523,12 @@ static int rtentry_to_fib_config(struct net *net, int cmd, struct rtentry *rt,
addr = sk_extract_addr(&rt->rt_gateway);
if (rt->rt_gateway.sa_family == AF_INET && addr) {
+ unsigned int addr_type;
+
cfg->fc_gw = addr;
+ addr_type = inet_addr_type_table(net, addr, cfg->fc_table);
if (rt->rt_flags & RTF_GATEWAY &&
- inet_addr_type(net, addr) == RTN_UNICAST)
+ addr_type == RTN_UNICAST)
cfg->fc_scope = RT_SCOPE_UNIVERSE;
}
@@ -770,6 +800,7 @@ out:
static void fib_magic(int cmd, int type, __be32 dst, int dst_len, struct in_ifaddr *ifa)
{
struct net *net = dev_net(ifa->ifa_dev->dev);
+ int tb_id = vrf_dev_table_rtnl(ifa->ifa_dev->dev);
struct fib_table *tb;
struct fib_config cfg = {
.fc_protocol = RTPROT_KERNEL,
@@ -784,11 +815,10 @@ static void fib_magic(int cmd, int type, __be32 dst, int dst_len, struct in_ifad
},
};
- if (type == RTN_UNICAST)
- tb = fib_new_table(net, RT_TABLE_MAIN);
- else
- tb = fib_new_table(net, RT_TABLE_LOCAL);
+ if (!tb_id)
+ tb_id = (type == RTN_UNICAST) ? RT_TABLE_MAIN : RT_TABLE_LOCAL;
+ tb = fib_new_table(net, tb_id);
if (!tb)
return;
@@ -970,11 +1000,14 @@ void fib_del_ifaddr(struct in_ifaddr *ifa, struct in_ifaddr *iprim)
fib_magic(RTM_DELROUTE, RTN_BROADCAST, any, 32, prim);
}
if (!(ok & LOCAL_OK)) {
+ unsigned int addr_type;
+
fib_magic(RTM_DELROUTE, RTN_LOCAL, ifa->ifa_local, 32, prim);
/* Check, that this local address finally disappeared. */
- if (gone &&
- inet_addr_type(dev_net(dev), ifa->ifa_local) != RTN_LOCAL) {
+ addr_type = inet_addr_type_dev_table(dev_net(dev), dev,
+ ifa->ifa_local);
+ if (gone && addr_type != RTN_LOCAL) {
/* And the last, but not the least thing.
* We must flush stray FIB entries.
*
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 558e196bae0f..b7f1d20a9615 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -670,16 +670,18 @@ static int fib_check_nh(struct fib_config *cfg, struct fib_info *fi,
struct fib_result res;
if (nh->nh_flags & RTNH_F_ONLINK) {
+ unsigned int addr_type;
if (cfg->fc_scope >= RT_SCOPE_LINK)
return -EINVAL;
- if (inet_addr_type(net, nh->nh_gw) != RTN_UNICAST)
- return -EINVAL;
dev = __dev_get_by_index(net, nh->nh_oif);
if (!dev)
return -ENODEV;
if (!(dev->flags & IFF_UP))
return -ENETDOWN;
+ addr_type = inet_addr_type_dev_table(net, dev, nh->nh_gw);
+ if (addr_type != RTN_UNICAST)
+ return -EINVAL;
if (!netif_carrier_ok(dev))
nh->nh_flags |= RTNH_F_LINKDOWN;
nh->nh_dev = dev;
@@ -689,6 +691,7 @@ static int fib_check_nh(struct fib_config *cfg, struct fib_info *fi,
}
rcu_read_lock();
{
+ struct fib_table *tbl = NULL;
struct flowi4 fl4 = {
.daddr = nh->nh_gw,
.flowi4_scope = cfg->fc_scope + 1,
@@ -699,8 +702,16 @@ static int fib_check_nh(struct fib_config *cfg, struct fib_info *fi,
/* It is not necessary, but requires a bit of thinking */
if (fl4.flowi4_scope < RT_SCOPE_LINK)
fl4.flowi4_scope = RT_SCOPE_LINK;
- err = fib_lookup(net, &fl4, &res,
- FIB_LOOKUP_IGNORE_LINKSTATE);
+
+ if (cfg->fc_table)
+ tbl = fib_get_table(net, cfg->fc_table);
+
+ if (tbl)
+ err = fib_table_lookup(tbl, &fl4, &res,
+ FIB_LOOKUP_IGNORE_LINKSTATE);
+ else
+ err = fib_lookup(net, &fl4, &res,
+ FIB_LOOKUP_IGNORE_LINKSTATE);
if (err) {
rcu_read_unlock();
return err;
@@ -836,6 +847,23 @@ __be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh)
return nh->nh_saddr;
}
+static bool fib_valid_prefsrc(struct fib_config *cfg, __be32 fib_prefsrc)
+{
+ if (cfg->fc_type != RTN_LOCAL || !cfg->fc_dst ||
+ fib_prefsrc != cfg->fc_dst) {
+ int tb_id = cfg->fc_table;
+
+ if (tb_id == RT_TABLE_MAIN)
+ tb_id = RT_TABLE_LOCAL;
+
+ if (inet_addr_type_table(cfg->fc_nlinfo.nl_net,
+ fib_prefsrc, tb_id) != RTN_LOCAL) {
+ return false;
+ }
+ }
+ return true;
+}
+
struct fib_info *fib_create_info(struct fib_config *cfg)
{
int err;
@@ -1031,12 +1059,8 @@ struct fib_info *fib_create_info(struct fib_config *cfg)
fi->fib_flags |= RTNH_F_LINKDOWN;
}
- if (fi->fib_prefsrc) {
- if (cfg->fc_type != RTN_LOCAL || !cfg->fc_dst ||
- fi->fib_prefsrc != cfg->fc_dst)
- if (inet_addr_type(net, fi->fib_prefsrc) != RTN_LOCAL)
- goto err_inval;
- }
+ if (fi->fib_prefsrc && !fib_valid_prefsrc(cfg, fi->fib_prefsrc))
+ goto err_inval;
change_nexthops(fi) {
fib_info_update_nh_saddr(net, nexthop_nh);
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 37c4bb89a708..1243c79cb5b0 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1423,8 +1423,11 @@ found:
nh->nh_flags & RTNH_F_LINKDOWN &&
!(fib_flags & FIB_LOOKUP_IGNORE_LINKSTATE))
continue;
- if (flp->flowi4_oif && flp->flowi4_oif != nh->nh_oif)
- continue;
+ if (!(flp->flowi4_flags & FLOWI_FLAG_VRFSRC)) {
+ if (flp->flowi4_oif &&
+ flp->flowi4_oif != nh->nh_oif)
+ continue;
+ }
if (!(fib_flags & FIB_LOOKUP_NOREF))
atomic_inc(&fi->fib_clntref);
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index c0556f1e4bf0..c6f1ce149ffb 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -96,6 +96,7 @@
#include <net/xfrm.h>
#include <net/inet_common.h>
#include <net/ip_fib.h>
+#include <net/vrf.h>
/*
* Build xmit assembly blocks
@@ -425,6 +426,7 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
fl4.flowi4_mark = mark;
fl4.flowi4_tos = RT_TOS(ip_hdr(skb)->tos);
fl4.flowi4_proto = IPPROTO_ICMP;
+ fl4.flowi4_oif = vrf_master_ifindex_rcu(skb->dev) ? : skb->dev->ifindex;
security_skb_classify_flow(skb, flowi4_to_flowi(&fl4));
rt = ip_route_output_key(net, &fl4);
if (IS_ERR(rt))
@@ -458,6 +460,8 @@ static struct rtable *icmp_route_lookup(struct net *net,
fl4->flowi4_proto = IPPROTO_ICMP;
fl4->fl4_icmp_type = type;
fl4->fl4_icmp_code = code;
+ fl4->flowi4_oif = vrf_master_ifindex_rcu(skb_in->dev) ? : skb_in->dev->ifindex;
+
security_skb_classify_flow(skb_in, flowi4_to_flowi(fl4));
rt = __ip_route_output_key(net, fl4);
if (IS_ERR(rt))
@@ -480,7 +484,8 @@ static struct rtable *icmp_route_lookup(struct net *net,
if (err)
goto relookup_failed;
- if (inet_addr_type(net, fl4_dec.saddr) == RTN_LOCAL) {
+ if (inet_addr_type_dev_table(net, skb_in->dev,
+ fl4_dec.saddr) == RTN_LOCAL) {
rt2 = __ip_route_output_key(net, &fl4_dec);
if (IS_ERR(rt2))
err = PTR_ERR(rt2);
@@ -829,7 +834,7 @@ static bool icmp_unreach(struct sk_buff *skb)
*/
if (!net->ipv4.sysctl_icmp_ignore_bogus_error_responses &&
- inet_addr_type(net, iph->daddr) == RTN_BROADCAST) {
+ inet_addr_type_dev_table(net, skb->dev, iph->daddr) == RTN_BROADCAST) {
net_warn_ratelimited("%pI4 sent an invalid ICMP type %u, code %u error to a broadcast: %pI4 on %s\n",
&ip_hdr(skb)->saddr,
icmph->type, icmph->code,
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index d96722ae8979..15762e758861 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -48,6 +48,7 @@
#include <linux/inet.h>
#include <linux/netfilter_ipv4.h>
#include <net/inet_ecn.h>
+#include <net/vrf.h>
/* NOTE. Logic of IP defragmentation is parallel to corresponding IPv6
* code now. If you change something here, _PLEASE_ update ipv6/reassembly.c
@@ -77,6 +78,7 @@ struct ipq {
u8 ecn; /* RFC3168 support */
u16 max_df_size; /* largest frag with DF set seen */
int iif;
+ int vif; /* VRF device index */
unsigned int rid;
struct inet_peer *peer;
};
@@ -99,6 +101,7 @@ static int ip_frag_reasm(struct ipq *qp, struct sk_buff *prev,
struct ip4_create_arg {
struct iphdr *iph;
u32 user;
+ int vif;
};
static unsigned int ipqhashfn(__be16 id, __be32 saddr, __be32 daddr, u8 prot)
@@ -127,7 +130,8 @@ static bool ip4_frag_match(const struct inet_frag_queue *q, const void *a)
qp->saddr == arg->iph->saddr &&
qp->daddr == arg->iph->daddr &&
qp->protocol == arg->iph->protocol &&
- qp->user == arg->user;
+ qp->user == arg->user &&
+ qp->vif == arg->vif;
}
static void ip4_frag_init(struct inet_frag_queue *q, const void *a)
@@ -144,6 +148,7 @@ static void ip4_frag_init(struct inet_frag_queue *q, const void *a)
qp->ecn = ip4_frag_ecn(arg->iph->tos);
qp->saddr = arg->iph->saddr;
qp->daddr = arg->iph->daddr;
+ qp->vif = arg->vif;
qp->user = arg->user;
qp->peer = sysctl_ipfrag_max_dist ?
inet_getpeer_v4(net->ipv4.peers, arg->iph->saddr, 1) : NULL;
@@ -244,7 +249,8 @@ out:
/* Find the correct entry in the "incomplete datagrams" queue for
* this IP datagram, and create new one, if nothing is found.
*/
-static struct ipq *ip_find(struct net *net, struct iphdr *iph, u32 user)
+static struct ipq *ip_find(struct net *net, struct iphdr *iph,
+ u32 user, int vif)
{
struct inet_frag_queue *q;
struct ip4_create_arg arg;
@@ -252,6 +258,7 @@ static struct ipq *ip_find(struct net *net, struct iphdr *iph, u32 user)
arg.iph = iph;
arg.user = user;
+ arg.vif = vif;
hash = ipqhashfn(iph->id, iph->saddr, iph->daddr, iph->protocol);
@@ -648,14 +655,15 @@ out_fail:
/* Process an incoming IP datagram fragment. */
int ip_defrag(struct sk_buff *skb, u32 user)
{
+ struct net_device *dev = skb->dev ? : skb_dst(skb)->dev;
+ int vif = vrf_master_ifindex_rcu(dev);
+ struct net *net = dev_net(dev);
struct ipq *qp;
- struct net *net;
- net = skb->dev ? dev_net(skb->dev) : dev_net(skb_dst(skb)->dev);
IP_INC_STATS_BH(net, IPSTATS_MIB_REASMREQDS);
/* Lookup (or create) queue header */
- qp = ip_find(net, ip_hdr(skb), user);
+ qp = ip_find(net, ip_hdr(skb), user, vif);
if (qp) {
int ret;
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 6bf89a6312bc..0138fada0951 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -1542,6 +1542,7 @@ void ip_send_unicast_reply(struct sock *sk, struct sk_buff *skb,
struct net *net = sock_net(sk);
struct sk_buff *nskb;
int err;
+ int oif;
if (__ip_options_echo(&replyopts.opt.opt, skb, sopt))
return;
@@ -1559,7 +1560,11 @@ void ip_send_unicast_reply(struct sock *sk, struct sk_buff *skb,
daddr = replyopts.opt.opt.faddr;
}
- flowi4_init_output(&fl4, arg->bound_dev_if,
+ oif = arg->bound_dev_if;
+ if (!oif && netif_index_is_vrf(net, skb->skb_iif))
+ oif = skb->skb_iif;
+
+ flowi4_init_output(&fl4, oif,
IP4_REPLY_MARK(net, skb->mark),
RT_TOS(arg->tos),
RT_SCOPE_UNIVERSE, ip_hdr(skb)->protocol,
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 18fd7c9095c7..2c89d294b669 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -112,6 +112,7 @@
#endif
#include <net/secure_seq.h>
#include <net/ip_tunnels.h>
+#include <net/vrf.h>
#define RT_FL_TOS(oldflp4) \
((oldflp4)->flowi4_tos & (IPTOS_RT_MASK | RTO_ONLINK))
@@ -1726,7 +1727,7 @@ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
* Now we are ready to route packet.
*/
fl4.flowi4_oif = 0;
- fl4.flowi4_iif = dev->ifindex;
+ fl4.flowi4_iif = vrf_master_ifindex_rcu(dev) ? : dev->ifindex;
fl4.flowi4_mark = skb->mark;
fl4.flowi4_tos = tos;
fl4.flowi4_scope = RT_SCOPE_UNIVERSE;
@@ -2130,6 +2131,11 @@ struct rtable *__ip_route_output_key(struct net *net, struct flowi4 *fl4)
fl4->saddr = inet_select_addr(dev_out, 0,
RT_SCOPE_HOST);
}
+ if (netif_is_vrf(dev_out) &&
+ !(fl4->flowi4_flags & FLOWI_FLAG_VRFSRC)) {
+ rth = vrf_dev_get_rth(dev_out);
+ goto out;
+ }
}
if (!fl4->daddr) {
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 1b8c5ba7d5f7..c0a15e7f359f 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1013,11 +1013,31 @@ int udp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
if (!rt) {
struct net *net = sock_net(sk);
+ __u8 flow_flags = inet_sk_flowi_flags(sk);
fl4 = &fl4_stack;
+
+ /* unconnected socket. If output device is enslaved to a VRF
+ * device lookup source address from VRF table. This mimics
+ * behavior of ip_route_connect{_init}.
+ */
+ if (netif_index_is_vrf(net, ipc.oif)) {
+ flowi4_init_output(fl4, ipc.oif, sk->sk_mark, tos,
+ RT_SCOPE_UNIVERSE, sk->sk_protocol,
+ (flow_flags | FLOWI_FLAG_VRFSRC),
+ faddr, saddr, dport,
+ inet->inet_sport);
+
+ rt = ip_route_output_flow(net, fl4, sk);
+ if (!IS_ERR(rt)) {
+ saddr = fl4->saddr;
+ ip_rt_put(rt);
+ }
+ }
+
flowi4_init_output(fl4, ipc.oif, sk->sk_mark, tos,
RT_SCOPE_UNIVERSE, sk->sk_protocol,
- inet_sk_flowi_flags(sk),
+ flow_flags,
faddr, saddr, dport, inet->inet_sport);
security_sk_classify_flow(sk, flowi4_to_flowi(fl4));
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