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xfrm: add extack to xfrm_do_migrate

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Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Sabrina Dubroca 2022-11-24 15:43:42 +01:00 committed by Steffen Klassert
parent 643bc1a2ee
commit bd12240337
4 changed files with 34 additions and 15 deletions
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3
include/net/xfrm.h
View File

@ -1703,7 +1703,8 @@ struct xfrm_state *xfrm_state_migrate(struct xfrm_state *x,
int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
struct xfrm_migrate *m, int num_bundles,
struct xfrm_kmaddress *k, struct net *net,
struct xfrm_encap_tmpl *encap, u32 if_id);
struct xfrm_encap_tmpl *encap, u32 if_id,
struct netlink_ext_ack *extack);
#endif
int km_new_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr, __be16 sport);

2
net/key/af_key.c
View File

@ -2626,7 +2626,7 @@ static int pfkey_migrate(struct sock *sk, struct sk_buff *skb,
}
return xfrm_migrate(&sel, dir, XFRM_POLICY_TYPE_MAIN, m, i,
kma ? &k : NULL, net, NULL, 0);
kma ? &k : NULL, net, NULL, 0, NULL);
out:
return err;

28
net/xfrm/xfrm_policy.c
View File

@ -4333,7 +4333,8 @@ static int migrate_tmpl_match(const struct xfrm_migrate *m, const struct xfrm_tm
/* update endpoint address(es) of template(s) */
static int xfrm_policy_migrate(struct xfrm_policy *pol,
struct xfrm_migrate *m, int num_migrate)
struct xfrm_migrate *m, int num_migrate,
struct netlink_ext_ack *extack)
{
struct xfrm_migrate *mp;
int i, j, n = 0;
@ -4341,6 +4342,7 @@ static int xfrm_policy_migrate(struct xfrm_policy *pol,
write_lock_bh(&pol->lock);
if (unlikely(pol->walk.dead)) {
/* target policy has been deleted */
NL_SET_ERR_MSG(extack, "Target policy not found");
write_unlock_bh(&pol->lock);
return -ENOENT;
}
@ -4372,17 +4374,22 @@ static int xfrm_policy_migrate(struct xfrm_policy *pol,
return 0;
}
static int xfrm_migrate_check(const struct xfrm_migrate *m, int num_migrate)
static int xfrm_migrate_check(const struct xfrm_migrate *m, int num_migrate,
struct netlink_ext_ack *extack)
{
int i, j;
if (num_migrate < 1 || num_migrate > XFRM_MAX_DEPTH)
if (num_migrate < 1 || num_migrate > XFRM_MAX_DEPTH) {
NL_SET_ERR_MSG(extack, "Invalid number of SAs to migrate, must be 0 < num <= XFRM_MAX_DEPTH (6)");
return -EINVAL;
}
for (i = 0; i < num_migrate; i++) {
if (xfrm_addr_any(&m[i].new_daddr, m[i].new_family) ||
xfrm_addr_any(&m[i].new_saddr, m[i].new_family))
xfrm_addr_any(&m[i].new_saddr, m[i].new_family)) {
NL_SET_ERR_MSG(extack, "Addresses in the MIGRATE attribute's list cannot be null");
return -EINVAL;
}
/* check if there is any duplicated entry */
for (j = i + 1; j < num_migrate; j++) {
@ -4393,8 +4400,10 @@ static int xfrm_migrate_check(const struct xfrm_migrate *m, int num_migrate)
m[i].proto == m[j].proto &&
m[i].mode == m[j].mode &&
m[i].reqid == m[j].reqid &&
m[i].old_family == m[j].old_family)
m[i].old_family == m[j].old_family) {
NL_SET_ERR_MSG(extack, "Entries in the MIGRATE attribute's list must be unique");
return -EINVAL;
}
}
}
@ -4404,7 +4413,8 @@ static int xfrm_migrate_check(const struct xfrm_migrate *m, int num_migrate)
int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
struct xfrm_migrate *m, int num_migrate,
struct xfrm_kmaddress *k, struct net *net,
struct xfrm_encap_tmpl *encap, u32 if_id)
struct xfrm_encap_tmpl *encap, u32 if_id,
struct netlink_ext_ack *extack)
{
int i, err, nx_cur = 0, nx_new = 0;
struct xfrm_policy *pol = NULL;
@ -4414,11 +4424,12 @@ int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
struct xfrm_migrate *mp;
/* Stage 0 - sanity checks */
err = xfrm_migrate_check(m, num_migrate);
err = xfrm_migrate_check(m, num_migrate, extack);
if (err < 0)
goto out;
if (dir >= XFRM_POLICY_MAX) {
NL_SET_ERR_MSG(extack, "Invalid policy direction");
err = -EINVAL;
goto out;
}
@ -4426,6 +4437,7 @@ int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
/* Stage 1 - find policy */
pol = xfrm_migrate_policy_find(sel, dir, type, net, if_id);
if (!pol) {
NL_SET_ERR_MSG(extack, "Target policy not found");
err = -ENOENT;
goto out;
}
@ -4447,7 +4459,7 @@ int xfrm_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
}
/* Stage 3 - update policy */
err = xfrm_policy_migrate(pol, m, num_migrate);
err = xfrm_policy_migrate(pol, m, num_migrate, extack);
if (err < 0)
goto restore_state;

16
net/xfrm/xfrm_user.c
View File

@ -2687,7 +2687,8 @@ nomem:
#ifdef CONFIG_XFRM_MIGRATE
static int copy_from_user_migrate(struct xfrm_migrate *ma,
struct xfrm_kmaddress *k,
struct nlattr **attrs, int *num)
struct nlattr **attrs, int *num,
struct netlink_ext_ack *extack)
{
struct nlattr *rt = attrs[XFRMA_MIGRATE];
struct xfrm_user_migrate *um;
@ -2706,8 +2707,10 @@ static int copy_from_user_migrate(struct xfrm_migrate *ma,
um = nla_data(rt);
num_migrate = nla_len(rt) / sizeof(*um);
if (num_migrate <= 0 || num_migrate > XFRM_MAX_DEPTH)
if (num_migrate <= 0 || num_migrate > XFRM_MAX_DEPTH) {
NL_SET_ERR_MSG(extack, "Invalid number of SAs to migrate, must be 0 < num <= XFRM_MAX_DEPTH (6)");
return -EINVAL;
}
for (i = 0; i < num_migrate; i++, um++, ma++) {
memcpy(&ma->old_daddr, &um->old_daddr, sizeof(ma->old_daddr));
@ -2740,8 +2743,10 @@ static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
struct xfrm_encap_tmpl *encap = NULL;
u32 if_id = 0;
if (!attrs[XFRMA_MIGRATE])
if (!attrs[XFRMA_MIGRATE]) {
NL_SET_ERR_MSG(extack, "Missing required MIGRATE attribute");
return -EINVAL;
}
kmp = attrs[XFRMA_KMADDRESS] ? &km : NULL;
@ -2749,7 +2754,7 @@ static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
if (err)
return err;
err = copy_from_user_migrate(m, kmp, attrs, &n);
err = copy_from_user_migrate(m, kmp, attrs, &n, extack);
if (err)
return err;
@ -2766,7 +2771,8 @@ static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
if (attrs[XFRMA_IF_ID])
if_id = nla_get_u32(attrs[XFRMA_IF_ID]);
err = xfrm_migrate(&pi->sel, pi->dir, type, m, n, kmp, net, encap, if_id);
err = xfrm_migrate(&pi->sel, pi->dir, type, m, n, kmp, net, encap,
if_id, extack);
kfree(encap);