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path: root/net/xfrm/xfrm_user.c
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Diffstat (limited to 'net/xfrm/xfrm_user.c')
-rw-r--r--net/xfrm/xfrm_user.c131
1 files changed, 74 insertions, 57 deletions
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 2bfbd9121e3b..983b0233767b 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -42,7 +42,7 @@ static int verify_one_alg(struct nlattr **attrs, enum xfrm_attr_type_t type)
return 0;
algp = nla_data(rt);
- if (nla_len(rt) < xfrm_alg_len(algp))
+ if (nla_len(rt) < (int)xfrm_alg_len(algp))
return -EINVAL;
switch (type) {
@@ -68,7 +68,7 @@ static int verify_auth_trunc(struct nlattr **attrs)
return 0;
algp = nla_data(rt);
- if (nla_len(rt) < xfrm_alg_auth_len(algp))
+ if (nla_len(rt) < (int)xfrm_alg_auth_len(algp))
return -EINVAL;
algp->alg_name[sizeof(algp->alg_name) - 1] = '\0';
@@ -84,7 +84,7 @@ static int verify_aead(struct nlattr **attrs)
return 0;
algp = nla_data(rt);
- if (nla_len(rt) < aead_len(algp))
+ if (nla_len(rt) < (int)aead_len(algp))
return -EINVAL;
algp->alg_name[sizeof(algp->alg_name) - 1] = '\0';
@@ -130,7 +130,7 @@ static inline int verify_replay(struct xfrm_usersa_info *p,
if (rs->bmp_len > XFRMA_REPLAY_ESN_MAX / sizeof(rs->bmp[0]) / 8)
return -EINVAL;
- if (nla_len(rt) < xfrm_replay_state_esn_len(rs) &&
+ if (nla_len(rt) < (int)xfrm_replay_state_esn_len(rs) &&
nla_len(rt) != sizeof(*rs))
return -EINVAL;
}
@@ -404,7 +404,7 @@ static inline int xfrm_replay_verify_len(struct xfrm_replay_state_esn *replay_es
struct nlattr *rp)
{
struct xfrm_replay_state_esn *up;
- int ulen;
+ unsigned int ulen;
if (!replay_esn || !rp)
return 0;
@@ -414,7 +414,7 @@ static inline int xfrm_replay_verify_len(struct xfrm_replay_state_esn *replay_es
/* Check the overall length and the internal bitmap length to avoid
* potential overflow. */
- if (nla_len(rp) < ulen ||
+ if (nla_len(rp) < (int)ulen ||
xfrm_replay_state_esn_len(replay_esn) != ulen ||
replay_esn->bmp_len != up->bmp_len)
return -EINVAL;
@@ -430,14 +430,14 @@ static int xfrm_alloc_replay_state_esn(struct xfrm_replay_state_esn **replay_esn
struct nlattr *rta)
{
struct xfrm_replay_state_esn *p, *pp, *up;
- int klen, ulen;
+ unsigned int klen, ulen;
if (!rta)
return 0;
up = nla_data(rta);
klen = xfrm_replay_state_esn_len(up);
- ulen = nla_len(rta) >= klen ? klen : sizeof(*up);
+ ulen = nla_len(rta) >= (int)klen ? klen : sizeof(*up);
p = kzalloc(klen, GFP_KERNEL);
if (!p)
@@ -458,9 +458,9 @@ static int xfrm_alloc_replay_state_esn(struct xfrm_replay_state_esn **replay_esn
return 0;
}
-static inline int xfrm_user_sec_ctx_size(struct xfrm_sec_ctx *xfrm_ctx)
+static inline unsigned int xfrm_user_sec_ctx_size(struct xfrm_sec_ctx *xfrm_ctx)
{
- int len = 0;
+ unsigned int len = 0;
if (xfrm_ctx) {
len += sizeof(struct xfrm_user_sec_ctx);
@@ -657,6 +657,7 @@ static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
if (err < 0) {
x->km.state = XFRM_STATE_DEAD;
+ xfrm_dev_state_delete(x);
__xfrm_state_put(x);
goto out;
}
@@ -1031,7 +1032,7 @@ static inline int xfrm_nlmsg_multicast(struct net *net, struct sk_buff *skb,
return -1;
}
-static inline size_t xfrm_spdinfo_msgsize(void)
+static inline unsigned int xfrm_spdinfo_msgsize(void)
{
return NLMSG_ALIGN(4)
+ nla_total_size(sizeof(struct xfrmu_spdinfo))
@@ -1146,18 +1147,19 @@ static int xfrm_get_spdinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
u32 *flags = nlmsg_data(nlh);
u32 sportid = NETLINK_CB(skb).portid;
u32 seq = nlh->nlmsg_seq;
+ int err;
r_skb = nlmsg_new(xfrm_spdinfo_msgsize(), GFP_ATOMIC);
if (r_skb == NULL)
return -ENOMEM;
- if (build_spdinfo(r_skb, net, sportid, seq, *flags) < 0)
- BUG();
+ err = build_spdinfo(r_skb, net, sportid, seq, *flags);
+ BUG_ON(err < 0);
return nlmsg_unicast(net->xfrm.nlsk, r_skb, sportid);
}
-static inline size_t xfrm_sadinfo_msgsize(void)
+static inline unsigned int xfrm_sadinfo_msgsize(void)
{
return NLMSG_ALIGN(4)
+ nla_total_size(sizeof(struct xfrmu_sadhinfo))
@@ -1204,13 +1206,14 @@ static int xfrm_get_sadinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
u32 *flags = nlmsg_data(nlh);
u32 sportid = NETLINK_CB(skb).portid;
u32 seq = nlh->nlmsg_seq;
+ int err;
r_skb = nlmsg_new(xfrm_sadinfo_msgsize(), GFP_ATOMIC);
if (r_skb == NULL)
return -ENOMEM;
- if (build_sadinfo(r_skb, net, sportid, seq, *flags) < 0)
- BUG();
+ err = build_sadinfo(r_skb, net, sportid, seq, *flags);
+ BUG_ON(err < 0);
return nlmsg_unicast(net->xfrm.nlsk, r_skb, sportid);
}
@@ -1633,7 +1636,7 @@ static inline int copy_to_user_sec_ctx(struct xfrm_policy *xp, struct sk_buff *s
return copy_sec_ctx(xp->security, skb);
return 0;
}
-static inline size_t userpolicy_type_attrsize(void)
+static inline unsigned int userpolicy_type_attrsize(void)
{
#ifdef CONFIG_XFRM_SUB_POLICY
return nla_total_size(sizeof(struct xfrm_userpolicy_type));
@@ -1692,32 +1695,34 @@ static int dump_one_policy(struct xfrm_policy *xp, int dir, int count, void *ptr
static int xfrm_dump_policy_done(struct netlink_callback *cb)
{
- struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *) &cb->args[1];
+ struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *)cb->args;
struct net *net = sock_net(cb->skb->sk);
xfrm_policy_walk_done(walk, net);
return 0;
}
+static int xfrm_dump_policy_start(struct netlink_callback *cb)
+{
+ struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *)cb->args;
+
+ BUILD_BUG_ON(sizeof(*walk) > sizeof(cb->args));
+
+ xfrm_policy_walk_init(walk, XFRM_POLICY_TYPE_ANY);
+ return 0;
+}
+
static int xfrm_dump_policy(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
- struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *) &cb->args[1];
+ struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *)cb->args;
struct xfrm_dump_info info;
- BUILD_BUG_ON(sizeof(struct xfrm_policy_walk) >
- sizeof(cb->args) - sizeof(cb->args[0]));
-
info.in_skb = cb->skb;
info.out_skb = skb;
info.nlmsg_seq = cb->nlh->nlmsg_seq;
info.nlmsg_flags = NLM_F_MULTI;
- if (!cb->args[0]) {
- cb->args[0] = 1;
- xfrm_policy_walk_init(walk, XFRM_POLICY_TYPE_ANY);
- }
-
(void) xfrm_policy_walk(net, walk, dump_one_policy, &info);
return skb->len;
@@ -1850,9 +1855,9 @@ static int xfrm_flush_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
return 0;
}
-static inline size_t xfrm_aevent_msgsize(struct xfrm_state *x)
+static inline unsigned int xfrm_aevent_msgsize(struct xfrm_state *x)
{
- size_t replay_size = x->replay_esn ?
+ unsigned int replay_size = x->replay_esn ?
xfrm_replay_state_esn_len(x->replay_esn) :
sizeof(struct xfrm_replay_state);
@@ -1957,8 +1962,9 @@ static int xfrm_get_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
c.seq = nlh->nlmsg_seq;
c.portid = nlh->nlmsg_pid;
- if (build_aevent(r_skb, x, &c) < 0)
- BUG();
+ err = build_aevent(r_skb, x, &c);
+ BUG_ON(err < 0);
+
err = nlmsg_unicast(net->xfrm.nlsk, r_skb, NETLINK_CB(skb).portid);
spin_unlock_bh(&x->lock);
xfrm_state_put(x);
@@ -2321,8 +2327,8 @@ 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,
- int with_encp)
+static inline unsigned int 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)
@@ -2385,6 +2391,7 @@ static int xfrm_send_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
{
struct net *net = &init_net;
struct sk_buff *skb;
+ int err;
skb = nlmsg_new(xfrm_migrate_msgsize(num_migrate, !!k, !!encap),
GFP_ATOMIC);
@@ -2392,8 +2399,8 @@ static int xfrm_send_migrate(const struct xfrm_selector *sel, u8 dir, u8 type,
return -ENOMEM;
/* build migrate */
- if (build_migrate(skb, m, num_migrate, k, sel, encap, dir, type) < 0)
- BUG();
+ err = build_migrate(skb, m, num_migrate, k, sel, encap, dir, type);
+ BUG_ON(err < 0);
return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_MIGRATE);
}
@@ -2473,6 +2480,7 @@ static const struct nla_policy xfrma_spd_policy[XFRMA_SPD_MAX+1] = {
static const struct xfrm_link {
int (*doit)(struct sk_buff *, struct nlmsghdr *, struct nlattr **);
+ int (*start)(struct netlink_callback *);
int (*dump)(struct sk_buff *, struct netlink_callback *);
int (*done)(struct netlink_callback *);
const struct nla_policy *nla_pol;
@@ -2486,6 +2494,7 @@ static const struct xfrm_link {
[XFRM_MSG_NEWPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_add_policy },
[XFRM_MSG_DELPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_get_policy },
[XFRM_MSG_GETPOLICY - XFRM_MSG_BASE] = { .doit = xfrm_get_policy,
+ .start = xfrm_dump_policy_start,
.dump = xfrm_dump_policy,
.done = xfrm_dump_policy_done },
[XFRM_MSG_ALLOCSPI - XFRM_MSG_BASE] = { .doit = xfrm_alloc_userspi },
@@ -2538,6 +2547,7 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh,
{
struct netlink_dump_control c = {
+ .start = link->start,
.dump = link->dump,
.done = link->done,
};
@@ -2566,7 +2576,7 @@ static void xfrm_netlink_rcv(struct sk_buff *skb)
mutex_unlock(&net->xfrm.xfrm_cfg_mutex);
}
-static inline size_t xfrm_expire_msgsize(void)
+static inline unsigned int xfrm_expire_msgsize(void)
{
return NLMSG_ALIGN(sizeof(struct xfrm_user_expire))
+ nla_total_size(sizeof(struct xfrm_mark));
@@ -2617,13 +2627,14 @@ static int xfrm_aevent_state_notify(struct xfrm_state *x, const struct km_event
{
struct net *net = xs_net(x);
struct sk_buff *skb;
+ int err;
skb = nlmsg_new(xfrm_aevent_msgsize(x), GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
- if (build_aevent(skb, x, c) < 0)
- BUG();
+ err = build_aevent(skb, x, c);
+ BUG_ON(err < 0);
return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_AEVENTS);
}
@@ -2654,9 +2665,9 @@ static int xfrm_notify_sa_flush(const struct km_event *c)
return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_SA);
}
-static inline size_t xfrm_sa_len(struct xfrm_state *x)
+static inline unsigned int xfrm_sa_len(struct xfrm_state *x)
{
- size_t l = 0;
+ unsigned int l = 0;
if (x->aead)
l += nla_total_size(aead_len(x->aead));
if (x->aalg) {
@@ -2701,8 +2712,9 @@ static int xfrm_notify_sa(struct xfrm_state *x, const struct km_event *c)
struct xfrm_usersa_id *id;
struct nlmsghdr *nlh;
struct sk_buff *skb;
- int len = xfrm_sa_len(x);
- int headlen, err;
+ unsigned int len = xfrm_sa_len(x);
+ unsigned int headlen;
+ int err;
headlen = sizeof(*p);
if (c->event == XFRM_MSG_DELSA) {
@@ -2776,8 +2788,8 @@ static int xfrm_send_state_notify(struct xfrm_state *x, const struct km_event *c
}
-static inline size_t xfrm_acquire_msgsize(struct xfrm_state *x,
- struct xfrm_policy *xp)
+static inline unsigned int xfrm_acquire_msgsize(struct xfrm_state *x,
+ struct xfrm_policy *xp)
{
return NLMSG_ALIGN(sizeof(struct xfrm_user_acquire))
+ nla_total_size(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr)
@@ -2829,13 +2841,14 @@ static int xfrm_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *xt,
{
struct net *net = xs_net(x);
struct sk_buff *skb;
+ int err;
skb = nlmsg_new(xfrm_acquire_msgsize(x, xp), GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
- if (build_acquire(skb, x, xt, xp) < 0)
- BUG();
+ err = build_acquire(skb, x, xt, xp);
+ BUG_ON(err < 0);
return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_ACQUIRE);
}
@@ -2900,7 +2913,7 @@ static struct xfrm_policy *xfrm_compile_policy(struct sock *sk, int opt,
return xp;
}
-static inline size_t xfrm_polexpire_msgsize(struct xfrm_policy *xp)
+static inline unsigned int xfrm_polexpire_msgsize(struct xfrm_policy *xp)
{
return NLMSG_ALIGN(sizeof(struct xfrm_user_polexpire))
+ nla_total_size(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr)
@@ -2944,26 +2957,28 @@ static int xfrm_exp_policy_notify(struct xfrm_policy *xp, int dir, const struct
{
struct net *net = xp_net(xp);
struct sk_buff *skb;
+ int err;
skb = nlmsg_new(xfrm_polexpire_msgsize(xp), GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
- if (build_polexpire(skb, xp, dir, c) < 0)
- BUG();
+ err = build_polexpire(skb, xp, dir, c);
+ BUG_ON(err < 0);
return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_EXPIRE);
}
static int xfrm_notify_policy(struct xfrm_policy *xp, int dir, const struct km_event *c)
{
- int len = nla_total_size(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr);
+ unsigned int len = nla_total_size(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr);
struct net *net = xp_net(xp);
struct xfrm_userpolicy_info *p;
struct xfrm_userpolicy_id *id;
struct nlmsghdr *nlh;
struct sk_buff *skb;
- int headlen, err;
+ unsigned int headlen;
+ int err;
headlen = sizeof(*p);
if (c->event == XFRM_MSG_DELPOLICY) {
@@ -3070,7 +3085,7 @@ static int xfrm_send_policy_notify(struct xfrm_policy *xp, int dir, const struct
}
-static inline size_t xfrm_report_msgsize(void)
+static inline unsigned int xfrm_report_msgsize(void)
{
return NLMSG_ALIGN(sizeof(struct xfrm_user_report));
}
@@ -3104,18 +3119,19 @@ static int xfrm_send_report(struct net *net, u8 proto,
struct xfrm_selector *sel, xfrm_address_t *addr)
{
struct sk_buff *skb;
+ int err;
skb = nlmsg_new(xfrm_report_msgsize(), GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
- if (build_report(skb, proto, sel, addr) < 0)
- BUG();
+ err = build_report(skb, proto, sel, addr);
+ BUG_ON(err < 0);
return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_REPORT);
}
-static inline size_t xfrm_mapping_msgsize(void)
+static inline unsigned int xfrm_mapping_msgsize(void)
{
return NLMSG_ALIGN(sizeof(struct xfrm_user_mapping));
}
@@ -3151,6 +3167,7 @@ static int xfrm_send_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr,
{
struct net *net = xs_net(x);
struct sk_buff *skb;
+ int err;
if (x->id.proto != IPPROTO_ESP)
return -EINVAL;
@@ -3162,8 +3179,8 @@ static int xfrm_send_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr,
if (skb == NULL)
return -ENOMEM;
- if (build_mapping(skb, x, ipaddr, sport) < 0)
- BUG();
+ err = build_mapping(skb, x, ipaddr, sport);
+ BUG_ON(err < 0);
return xfrm_nlmsg_multicast(net, skb, 0, XFRMNLGRP_MAPPING);
}
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