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[XFRM] netlink: Use nlattr instead of rtattr

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Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Graf 2007-08-22 14:01:33 -07:00 committed by David S. Miller
parent 35a7aa08bf
commit 5424f32e48
1 changed files with 77 additions and 80 deletions
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157
net/xfrm/xfrm_user.c
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@ -38,16 +38,16 @@ static inline int alg_len(struct xfrm_algo *alg)
return sizeof(*alg) + ((alg->alg_key_len + 7) / 8);
}
static int verify_one_alg(struct rtattr **attrs, enum xfrm_attr_type_t type)
static int verify_one_alg(struct nlattr **attrs, enum xfrm_attr_type_t type)
{
struct rtattr *rt = attrs[type];
struct nlattr *rt = attrs[type];
struct xfrm_algo *algp;
if (!rt)
return 0;
algp = RTA_DATA(rt);
if (RTA_PAYLOAD(rt) < alg_len(algp))
algp = nla_data(rt);
if (nla_len(rt) < alg_len(algp))
return -EINVAL;
switch (type) {
@ -75,24 +75,24 @@ static int verify_one_alg(struct rtattr **attrs, enum xfrm_attr_type_t type)
return 0;
}
static void verify_one_addr(struct rtattr **attrs, enum xfrm_attr_type_t type,
static void verify_one_addr(struct nlattr **attrs, enum xfrm_attr_type_t type,
xfrm_address_t **addrp)
{
struct rtattr *rt = attrs[type];
struct nlattr *rt = attrs[type];
if (rt && addrp)
*addrp = RTA_DATA(rt);
*addrp = nla_data(rt);
}
static inline int verify_sec_ctx_len(struct rtattr **attrs)
static inline int verify_sec_ctx_len(struct nlattr **attrs)
{
struct rtattr *rt = attrs[XFRMA_SEC_CTX];
struct nlattr *rt = attrs[XFRMA_SEC_CTX];
struct xfrm_user_sec_ctx *uctx;
if (!rt)
return 0;
uctx = RTA_DATA(rt);
uctx = nla_data(rt);
if (uctx->len != (sizeof(struct xfrm_user_sec_ctx) + uctx->ctx_len))
return -EINVAL;
@ -101,7 +101,7 @@ static inline int verify_sec_ctx_len(struct rtattr **attrs)
static int verify_newsa_info(struct xfrm_usersa_info *p,
struct rtattr **attrs)
struct nlattr **attrs)
{
int err;
@ -191,16 +191,15 @@ static int verify_newsa_info(struct xfrm_usersa_info *p,
static int attach_one_algo(struct xfrm_algo **algpp, u8 *props,
struct xfrm_algo_desc *(*get_byname)(char *, int),
struct rtattr *u_arg)
struct nlattr *rta)
{
struct rtattr *rta = u_arg;
struct xfrm_algo *p, *ualg;
struct xfrm_algo_desc *algo;
if (!rta)
return 0;
ualg = RTA_DATA(rta);
ualg = nla_data(rta);
algo = get_byname(ualg->alg_name, 1);
if (!algo)
@ -216,15 +215,14 @@ static int attach_one_algo(struct xfrm_algo **algpp, u8 *props,
return 0;
}
static int attach_encap_tmpl(struct xfrm_encap_tmpl **encapp, struct rtattr *u_arg)
static int attach_encap_tmpl(struct xfrm_encap_tmpl **encapp, struct nlattr *rta)
{
struct rtattr *rta = u_arg;
struct xfrm_encap_tmpl *p, *uencap;
if (!rta)
return 0;
uencap = RTA_DATA(rta);
uencap = nla_data(rta);
p = kmemdup(uencap, sizeof(*p), GFP_KERNEL);
if (!p)
return -ENOMEM;
@ -245,26 +243,25 @@ static inline int xfrm_user_sec_ctx_size(struct xfrm_sec_ctx *xfrm_ctx)
return len;
}
static int attach_sec_ctx(struct xfrm_state *x, struct rtattr *u_arg)
static int attach_sec_ctx(struct xfrm_state *x, struct nlattr *u_arg)
{
struct xfrm_user_sec_ctx *uctx;
if (!u_arg)
return 0;
uctx = RTA_DATA(u_arg);
uctx = nla_data(u_arg);
return security_xfrm_state_alloc(x, uctx);
}
static int attach_one_addr(xfrm_address_t **addrpp, struct rtattr *u_arg)
static int attach_one_addr(xfrm_address_t **addrpp, struct nlattr *rta)
{
struct rtattr *rta = u_arg;
xfrm_address_t *p, *uaddrp;
if (!rta)
return 0;
uaddrp = RTA_DATA(rta);
uaddrp = nla_data(rta);
p = kmemdup(uaddrp, sizeof(*p), GFP_KERNEL);
if (!p)
return -ENOMEM;
@ -298,23 +295,23 @@ static void copy_from_user_state(struct xfrm_state *x, struct xfrm_usersa_info *
* somehow made shareable and move it to xfrm_state.c - JHS
*
*/
static void xfrm_update_ae_params(struct xfrm_state *x, struct rtattr **attrs)
static void xfrm_update_ae_params(struct xfrm_state *x, struct nlattr **attrs)
{
struct rtattr *rp = attrs[XFRMA_REPLAY_VAL];
struct rtattr *lt = attrs[XFRMA_LTIME_VAL];
struct rtattr *et = attrs[XFRMA_ETIMER_THRESH];
struct rtattr *rt = attrs[XFRMA_REPLAY_THRESH];
struct nlattr *rp = attrs[XFRMA_REPLAY_VAL];
struct nlattr *lt = attrs[XFRMA_LTIME_VAL];
struct nlattr *et = attrs[XFRMA_ETIMER_THRESH];
struct nlattr *rt = attrs[XFRMA_REPLAY_THRESH];
if (rp) {
struct xfrm_replay_state *replay;
replay = RTA_DATA(rp);
replay = nla_data(rp);
memcpy(&x->replay, replay, sizeof(*replay));
memcpy(&x->preplay, replay, sizeof(*replay));
}
if (lt) {
struct xfrm_lifetime_cur *ltime;
ltime = RTA_DATA(lt);
ltime = nla_data(lt);
x->curlft.bytes = ltime->bytes;
x->curlft.packets = ltime->packets;
x->curlft.add_time = ltime->add_time;
@ -322,14 +319,14 @@ static void xfrm_update_ae_params(struct xfrm_state *x, struct rtattr **attrs)
}
if (et)
x->replay_maxage = *(u32*)RTA_DATA(et);
x->replay_maxage = nla_get_u32(et);
if (rt)
x->replay_maxdiff = *(u32*)RTA_DATA(rt);
x->replay_maxdiff = nla_get_u32(rt);
}
static struct xfrm_state *xfrm_state_construct(struct xfrm_usersa_info *p,
struct rtattr **attrs,
struct nlattr **attrs,
int *errp)
{
struct xfrm_state *x = xfrm_state_alloc();
@ -373,7 +370,7 @@ static struct xfrm_state *xfrm_state_construct(struct xfrm_usersa_info *p,
/* override default values from above */
xfrm_update_ae_params(x, (struct rtattr **)attrs);
xfrm_update_ae_params(x, attrs);
return x;
@ -386,7 +383,7 @@ static struct xfrm_state *xfrm_state_construct(struct xfrm_usersa_info *p,
}
static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct xfrm_usersa_info *p = nlmsg_data(nlh);
struct xfrm_state *x;
@ -427,7 +424,7 @@ static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static struct xfrm_state *xfrm_user_state_lookup(struct xfrm_usersa_id *p,
struct rtattr **attrs,
struct nlattr **attrs,
int *errp)
{
struct xfrm_state *x = NULL;
@ -457,7 +454,7 @@ static struct xfrm_state *xfrm_user_state_lookup(struct xfrm_usersa_id *p,
}
static int xfrm_del_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct xfrm_state *x;
int err = -ESRCH;
@ -669,7 +666,7 @@ static int build_spdinfo(struct sk_buff *skb, u32 pid, u32 seq, u32 flags)
}
static int xfrm_get_spdinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct sk_buff *r_skb;
u32 *flags = nlmsg_data(nlh);
@ -722,7 +719,7 @@ static int build_sadinfo(struct sk_buff *skb, u32 pid, u32 seq, u32 flags)
}
static int xfrm_get_sadinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct sk_buff *r_skb;
u32 *flags = nlmsg_data(nlh);
@ -740,7 +737,7 @@ static int xfrm_get_sadinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static int xfrm_get_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct xfrm_usersa_id *p = nlmsg_data(nlh);
struct xfrm_state *x;
@ -786,7 +783,7 @@ static int verify_userspi_info(struct xfrm_userspi_info *p)
}
static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct xfrm_state *x;
struct xfrm_userspi_info *p;
@ -915,15 +912,15 @@ static int verify_newpolicy_info(struct xfrm_userpolicy_info *p)
return verify_policy_dir(p->dir);
}
static int copy_from_user_sec_ctx(struct xfrm_policy *pol, struct rtattr **attrs)
static int copy_from_user_sec_ctx(struct xfrm_policy *pol, struct nlattr **attrs)
{
struct rtattr *rt = attrs[XFRMA_SEC_CTX];
struct nlattr *rt = attrs[XFRMA_SEC_CTX];
struct xfrm_user_sec_ctx *uctx;
if (!rt)
return 0;
uctx = RTA_DATA(rt);
uctx = nla_data(rt);
return security_xfrm_policy_alloc(pol, uctx);
}
@ -983,35 +980,35 @@ static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family)
return 0;
}
static int copy_from_user_tmpl(struct xfrm_policy *pol, struct rtattr **attrs)
static int copy_from_user_tmpl(struct xfrm_policy *pol, struct nlattr **attrs)
{
struct rtattr *rt = attrs[XFRMA_TMPL];
struct nlattr *rt = attrs[XFRMA_TMPL];
if (!rt) {
pol->xfrm_nr = 0;
} else {
struct xfrm_user_tmpl *utmpl = RTA_DATA(rt);
int nr = (rt->rta_len - sizeof(*rt)) / sizeof(*utmpl);
struct xfrm_user_tmpl *utmpl = nla_data(rt);
int nr = nla_len(rt) / sizeof(*utmpl);
int err;
err = validate_tmpl(nr, utmpl, pol->family);
if (err)
return err;
copy_templates(pol, RTA_DATA(rt), nr);
copy_templates(pol, utmpl, nr);
}
return 0;
}
static int copy_from_user_policy_type(u8 *tp, struct rtattr **attrs)
static int copy_from_user_policy_type(u8 *tp, struct nlattr **attrs)
{
struct rtattr *rt = attrs[XFRMA_POLICY_TYPE];
struct nlattr *rt = attrs[XFRMA_POLICY_TYPE];
struct xfrm_userpolicy_type *upt;
u8 type = XFRM_POLICY_TYPE_MAIN;
int err;
if (rt) {
upt = RTA_DATA(rt);
upt = nla_data(rt);
type = upt->type;
}
@ -1049,7 +1046,7 @@ static void copy_to_user_policy(struct xfrm_policy *xp, struct xfrm_userpolicy_i
p->share = XFRM_SHARE_ANY; /* XXX xp->share */
}
static struct xfrm_policy *xfrm_policy_construct(struct xfrm_userpolicy_info *p, struct rtattr **attrs, int *errp)
static struct xfrm_policy *xfrm_policy_construct(struct xfrm_userpolicy_info *p, struct nlattr **attrs, int *errp)
{
struct xfrm_policy *xp = xfrm_policy_alloc(GFP_KERNEL);
int err;
@ -1078,7 +1075,7 @@ static struct xfrm_policy *xfrm_policy_construct(struct xfrm_userpolicy_info *p,
}
static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct xfrm_userpolicy_info *p = nlmsg_data(nlh);
struct xfrm_policy *xp;
@ -1271,7 +1268,7 @@ static struct sk_buff *xfrm_policy_netlink(struct sk_buff *in_skb,
}
static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct xfrm_policy *xp;
struct xfrm_userpolicy_id *p;
@ -1294,7 +1291,7 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
if (p->index)
xp = xfrm_policy_byid(type, p->dir, p->index, delete, &err);
else {
struct rtattr *rt = attrs[XFRMA_SEC_CTX];
struct nlattr *rt = attrs[XFRMA_SEC_CTX];
struct xfrm_policy tmp;
err = verify_sec_ctx_len(attrs);
@ -1303,7 +1300,7 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
memset(&tmp, 0, sizeof(struct xfrm_policy));
if (rt) {
struct xfrm_user_sec_ctx *uctx = RTA_DATA(rt);
struct xfrm_user_sec_ctx *uctx = nla_data(rt);
if ((err = security_xfrm_policy_alloc(&tmp, uctx)))
return err;
@ -1345,7 +1342,7 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static int xfrm_flush_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct km_event c;
struct xfrm_usersa_flush *p = nlmsg_data(nlh);
@ -1411,7 +1408,7 @@ static int build_aevent(struct sk_buff *skb, struct xfrm_state *x, struct km_eve
}
static int xfrm_get_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct xfrm_state *x;
struct sk_buff *r_skb;
@ -1449,14 +1446,14 @@ static int xfrm_get_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static int xfrm_new_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct xfrm_state *x;
struct km_event c;
int err = - EINVAL;
struct xfrm_aevent_id *p = nlmsg_data(nlh);
struct rtattr *rp = attrs[XFRMA_REPLAY_VAL];
struct rtattr *lt = attrs[XFRMA_LTIME_VAL];
struct nlattr *rp = attrs[XFRMA_REPLAY_VAL];
struct nlattr *lt = attrs[XFRMA_LTIME_VAL];
if (!lt && !rp)
return err;
@ -1488,7 +1485,7 @@ static int xfrm_new_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static int xfrm_flush_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct km_event c;
u8 type = XFRM_POLICY_TYPE_MAIN;
@ -1513,7 +1510,7 @@ static int xfrm_flush_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct xfrm_policy *xp;
struct xfrm_user_polexpire *up = nlmsg_data(nlh);
@ -1528,7 +1525,7 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
if (p->index)
xp = xfrm_policy_byid(type, p->dir, p->index, 0, &err);
else {
struct rtattr *rt = attrs[XFRMA_SEC_CTX];
struct nlattr *rt = attrs[XFRMA_SEC_CTX];
struct xfrm_policy tmp;
err = verify_sec_ctx_len(attrs);
@ -1537,7 +1534,7 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
memset(&tmp, 0, sizeof(struct xfrm_policy));
if (rt) {
struct xfrm_user_sec_ctx *uctx = RTA_DATA(rt);
struct xfrm_user_sec_ctx *uctx = nla_data(rt);
if ((err = security_xfrm_policy_alloc(&tmp, uctx)))
return err;
@ -1574,7 +1571,7 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static int xfrm_add_sa_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct xfrm_state *x;
int err;
@ -1606,12 +1603,12 @@ static int xfrm_add_sa_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
}
static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct xfrm_policy *xp;
struct xfrm_user_tmpl *ut;
int i;
struct rtattr *rt = attrs[XFRMA_TMPL];
struct nlattr *rt = attrs[XFRMA_TMPL];
struct xfrm_user_acquire *ua = nlmsg_data(nlh);
struct xfrm_state *x = xfrm_state_alloc();
@ -1628,7 +1625,7 @@ static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh,
}
/* build an XP */
xp = xfrm_policy_construct(&ua->policy, (struct rtattr **) attrs, &err);
xp = xfrm_policy_construct(&ua->policy, attrs, &err);
if (!xp) {
kfree(x);
return err;
@ -1638,7 +1635,7 @@ static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh,
memcpy(&x->props.saddr, &ua->saddr, sizeof(ua->saddr));
memcpy(&x->sel, &ua->sel, sizeof(ua->sel));
ut = RTA_DATA(rt);
ut = nla_data(rt);
/* extract the templates and for each call km_key */
for (i = 0; i < xp->xfrm_nr; i++, ut++) {
struct xfrm_tmpl *t = &xp->xfrm_vec[i];
@ -1661,14 +1658,14 @@ static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh,
#ifdef CONFIG_XFRM_MIGRATE
static int copy_from_user_migrate(struct xfrm_migrate *ma,
struct rtattr **attrs, int *num)
struct nlattr **attrs, int *num)
{
struct rtattr *rt = attrs[XFRMA_MIGRATE];
struct nlattr *rt = attrs[XFRMA_MIGRATE];
struct xfrm_user_migrate *um;
int i, num_migrate;
um = RTA_DATA(rt);
num_migrate = (rt->rta_len - sizeof(*rt)) / sizeof(*um);
um = nla_data(rt);
num_migrate = nla_len(rt) / sizeof(*um);
if (num_migrate <= 0 || num_migrate > XFRM_MAX_DEPTH)
return -EINVAL;
@ -1692,7 +1689,7 @@ static int copy_from_user_migrate(struct xfrm_migrate *ma,
}
static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
struct xfrm_userpolicy_id *pi = nlmsg_data(nlh);
struct xfrm_migrate m[XFRM_MAX_DEPTH];
@ -1703,12 +1700,12 @@ static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
if (attrs[XFRMA_MIGRATE] == NULL)
return -EINVAL;
err = copy_from_user_policy_type(&type, (struct rtattr **)attrs);
err = copy_from_user_policy_type(&type, attrs);
if (err)
return err;
err = copy_from_user_migrate((struct xfrm_migrate *)m,
(struct rtattr **)attrs, &n);
attrs, &n);
if (err)
return err;
@ -1721,7 +1718,7 @@ static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
}
#else
static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **attrs)
struct nlattr **attrs)
{
return -ENOPROTOOPT;
}
@ -1854,7 +1851,7 @@ static const struct nla_policy xfrma_policy[XFRMA_MAX+1] = {
};
static struct xfrm_link {
int (*doit)(struct sk_buff *, struct nlmsghdr *, struct rtattr **);
int (*doit)(struct sk_buff *, struct nlmsghdr *, struct nlattr **);
int (*dump)(struct sk_buff *, struct netlink_callback *);
} xfrm_dispatch[XFRM_NR_MSGTYPES] = {
[XFRM_MSG_NEWSA - XFRM_MSG_BASE] = { .doit = xfrm_add_sa },
@ -1914,7 +1911,7 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
if (link->doit == NULL)
return -EINVAL;
return link->doit(skb, nlh, (struct rtattr **) attrs);
return link->doit(skb, nlh, attrs);
}
static void xfrm_netlink_rcv(struct sock *sk, int len)