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authorAntony Antony <antony@phenome.org>2017-06-06 12:12:14 +0200
committerSteffen Klassert <steffen.klassert@secunet.com>2017-06-07 08:35:54 +0200
commit8bafd73093f2f431f5a363f8057abc0ccc118853 (patch)
tree20af3529dd452d18819bbef145e0de1f37caa261 /net/xfrm
parent4ab47d47af20addd6ecee1ece0205b1fbf483942 (diff)
downloadlinux-8bafd73093f2f431f5a363f8057abc0ccc118853.tar.bz2
xfrm: add UDP encapsulation port in migrate message
Add XFRMA_ENCAP, UDP encapsulation port, to km_migrate announcement to userland. Only add if XFRMA_ENCAP was in user migrate request. Signed-off-by: Antony Antony <antony@phenome.org> Reviewed-by: Richard Guy Briggs <rgb@tricolour.ca> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm')
-rw-r--r--net/xfrm/xfrm_policy.c2
-rw-r--r--net/xfrm/xfrm_state.c6
-rw-r--r--net/xfrm/xfrm_user.c23
3 files changed, 22 insertions, 9 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index d47f055ca90e..e6141891d23c 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -3384,7 +3384,7 @@ int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
}
/* Stage 5 - announce */
- km_migrate(sel, dir, type, m, num_migrate, k);
+ km_migrate(sel, dir, type, m, num_migrate, k, encap);
xfrm_pol_put(pol);
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index b76e6730b165..f2421c668449 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -1964,7 +1964,8 @@ EXPORT_SYMBOL(km_policy_expired);
#ifdef CONFIG_XFRM_MIGRATE
int km_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
const struct xfrm_migrate *m, int num_migrate,
- const struct xfrm_kmaddress *k)
+ const struct xfrm_kmaddress *k,
+ const struct xfrm_encap_tmpl *encap)
{
int err = -EINVAL;
int ret;
@@ -1973,7 +1974,8 @@ int km_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
rcu_read_lock();
list_for_each_entry_rcu(km, &xfrm_km_list, list) {
if (km->migrate) {
- ret = km->migrate(sel, dir, type, m, num_migrate, k);
+ ret = km->migrate(sel, dir, type, m, num_migrate, k,
+ encap);
if (!ret)
err = ret;
}
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index fb98892f7d89..6197c7231bc7 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -2314,17 +2314,20 @@ static int copy_to_user_kmaddress(const struct xfrm_kmaddress *k, struct sk_buff
return nla_put(skb, XFRMA_KMADDRESS, sizeof(uk), &uk);
}
-static inline size_t xfrm_migrate_msgsize(int num_migrate, int with_kma)
+static inline size_t xfrm_migrate_msgsize(int num_migrate, int with_kma,
+ int with_encp)
{
return NLMSG_ALIGN(sizeof(struct xfrm_userpolicy_id))
+ (with_kma ? nla_total_size(sizeof(struct xfrm_kmaddress)) : 0)
+ + (with_encp ? nla_total_size(sizeof(struct xfrm_encap_tmpl)) : 0)
+ nla_total_size(sizeof(struct xfrm_user_migrate) * num_migrate)
+ userpolicy_type_attrsize();
}
static int build_migrate(struct sk_buff *skb, const struct xfrm_migrate *m,
int num_migrate, const struct xfrm_kmaddress *k,
- const struct xfrm_selector *sel, u8 dir, u8 type)
+ const struct xfrm_selector *sel,
+ const struct xfrm_encap_tmpl *encap, u8 dir, u8 type)
{
const struct xfrm_migrate *mp;
struct xfrm_userpolicy_id *pol_id;
@@ -2346,6 +2349,11 @@ static int build_migrate(struct sk_buff *skb, const struct xfrm_migrate *m,
if (err)
goto out_cancel;
}
+ if (encap) {
+ err = nla_put(skb, XFRMA_ENCAP, sizeof(*encap), encap);
+ if (err)
+ goto out_cancel;
+ }
err = copy_to_user_policy_type(type, skb);
if (err)
goto out_cancel;
@@ -2365,17 +2373,19 @@ out_cancel:
static int xfrm_send_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
const struct xfrm_migrate *m, int num_migrate,
- const struct xfrm_kmaddress *k)
+ const struct xfrm_kmaddress *k,
+ const struct xfrm_encap_tmpl *encap)
{
struct net *net = &init_net;
struct sk_buff *skb;
- skb = nlmsg_new(xfrm_migrate_msgsize(num_migrate, !!k), GFP_ATOMIC);
+ skb = nlmsg_new(xfrm_migrate_msgsize(num_migrate, !!k, !!encap),
+ GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
/* build migrate */
- if (build_migrate(skb, m, num_migrate, k, sel, dir, type) < 0)
+ if (build_migrate(skb, m, num_migrate, k, sel, encap, dir, type) < 0)
BUG();
return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_MIGRATE);
@@ -2383,7 +2393,8 @@ static int xfrm_send_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
#else
static int xfrm_send_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
const struct xfrm_migrate *m, int num_migrate,
- const struct xfrm_kmaddress *k)
+ const struct xfrm_kmaddress *k,
+ const struct xfrm_encap_tmpl *encap)
{
return -ENOPROTOOPT;
}