#endif
#include <linux/audit.h>
+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 **xfrma, enum xfrm_attr_type_t type)
{
- struct rtattr *rt = xfrma[type - 1];
+ struct rtattr *rt = xfrma[type];
struct xfrm_algo *algp;
- int len;
if (!rt)
return 0;
- len = (rt->rta_len - sizeof(*rt)) - sizeof(*algp);
- if (len < 0)
- return -EINVAL;
-
algp = RTA_DATA(rt);
-
- len -= (algp->alg_key_len + 7U) / 8;
- if (len < 0)
+ if (RTA_PAYLOAD(rt) < alg_len(algp))
return -EINVAL;
switch (type) {
return 0;
}
-static int verify_encap_tmpl(struct rtattr **xfrma)
-{
- struct rtattr *rt = xfrma[XFRMA_ENCAP - 1];
- struct xfrm_encap_tmpl *encap;
-
- if (!rt)
- return 0;
-
- if ((rt->rta_len - sizeof(*rt)) < sizeof(*encap))
- return -EINVAL;
-
- return 0;
-}
-
-static int verify_one_addr(struct rtattr **xfrma, enum xfrm_attr_type_t type,
+static void verify_one_addr(struct rtattr **xfrma, enum xfrm_attr_type_t type,
xfrm_address_t **addrp)
{
- struct rtattr *rt = xfrma[type - 1];
-
- if (!rt)
- return 0;
+ struct rtattr *rt = xfrma[type];
- if ((rt->rta_len - sizeof(*rt)) < sizeof(**addrp))
- return -EINVAL;
-
- if (addrp)
+ if (rt && addrp)
*addrp = RTA_DATA(rt);
-
- return 0;
}
static inline int verify_sec_ctx_len(struct rtattr **xfrma)
{
- struct rtattr *rt = xfrma[XFRMA_SEC_CTX - 1];
+ struct rtattr *rt = xfrma[XFRMA_SEC_CTX];
struct xfrm_user_sec_ctx *uctx;
- int len = 0;
if (!rt)
return 0;
- if (rt->rta_len < sizeof(*uctx))
- return -EINVAL;
-
uctx = RTA_DATA(rt);
-
- len += sizeof(struct xfrm_user_sec_ctx);
- len += uctx->ctx_len;
-
- if (uctx->len != len)
+ if (uctx->len != (sizeof(struct xfrm_user_sec_ctx) + uctx->ctx_len))
return -EINVAL;
return 0;
err = -EINVAL;
switch (p->id.proto) {
case IPPROTO_AH:
- if (!xfrma[XFRMA_ALG_AUTH-1] ||
- xfrma[XFRMA_ALG_CRYPT-1] ||
- xfrma[XFRMA_ALG_COMP-1])
+ if (!xfrma[XFRMA_ALG_AUTH] ||
+ xfrma[XFRMA_ALG_CRYPT] ||
+ xfrma[XFRMA_ALG_COMP])
goto out;
break;
case IPPROTO_ESP:
- if ((!xfrma[XFRMA_ALG_AUTH-1] &&
- !xfrma[XFRMA_ALG_CRYPT-1]) ||
- xfrma[XFRMA_ALG_COMP-1])
+ if ((!xfrma[XFRMA_ALG_AUTH] &&
+ !xfrma[XFRMA_ALG_CRYPT]) ||
+ xfrma[XFRMA_ALG_COMP])
goto out;
break;
case IPPROTO_COMP:
- if (!xfrma[XFRMA_ALG_COMP-1] ||
- xfrma[XFRMA_ALG_AUTH-1] ||
- xfrma[XFRMA_ALG_CRYPT-1])
+ if (!xfrma[XFRMA_ALG_COMP] ||
+ xfrma[XFRMA_ALG_AUTH] ||
+ xfrma[XFRMA_ALG_CRYPT])
goto out;
break;
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
case IPPROTO_DSTOPTS:
case IPPROTO_ROUTING:
- if (xfrma[XFRMA_ALG_COMP-1] ||
- xfrma[XFRMA_ALG_AUTH-1] ||
- xfrma[XFRMA_ALG_CRYPT-1] ||
- xfrma[XFRMA_ENCAP-1] ||
- xfrma[XFRMA_SEC_CTX-1] ||
- !xfrma[XFRMA_COADDR-1])
+ if (xfrma[XFRMA_ALG_COMP] ||
+ xfrma[XFRMA_ALG_AUTH] ||
+ xfrma[XFRMA_ALG_CRYPT] ||
+ xfrma[XFRMA_ENCAP] ||
+ xfrma[XFRMA_SEC_CTX] ||
+ !xfrma[XFRMA_COADDR])
goto out;
break;
#endif
goto out;
if ((err = verify_one_alg(xfrma, XFRMA_ALG_COMP)))
goto out;
- if ((err = verify_encap_tmpl(xfrma)))
- goto out;
if ((err = verify_sec_ctx_len(xfrma)))
goto out;
- if ((err = verify_one_addr(xfrma, XFRMA_COADDR, NULL)))
- goto out;
err = -EINVAL;
switch (p->mode) {
struct rtattr *rta = u_arg;
struct xfrm_algo *p, *ualg;
struct xfrm_algo_desc *algo;
- int len;
if (!rta)
return 0;
return -ENOSYS;
*props = algo->desc.sadb_alg_id;
- len = sizeof(*ualg) + (ualg->alg_key_len + 7U) / 8;
- p = kmemdup(ualg, len, GFP_KERNEL);
+ p = kmemdup(ualg, alg_len(ualg), GFP_KERNEL);
if (!p)
return -ENOMEM;
x->props.family = p->family;
memcpy(&x->props.saddr, &p->saddr, sizeof(x->props.saddr));
x->props.flags = p->flags;
+
+ /*
+ * Set inner address family if the KM left it as zero.
+ * See comment in validate_tmpl.
+ */
+ if (!x->sel.family)
+ x->sel.family = p->family;
}
/*
* somehow made shareable and move it to xfrm_state.c - JHS
*
*/
-static int xfrm_update_ae_params(struct xfrm_state *x, struct rtattr **xfrma)
+static void xfrm_update_ae_params(struct xfrm_state *x, struct rtattr **xfrma)
{
- int err = - EINVAL;
- struct rtattr *rp = xfrma[XFRMA_REPLAY_VAL-1];
- struct rtattr *lt = xfrma[XFRMA_LTIME_VAL-1];
- struct rtattr *et = xfrma[XFRMA_ETIMER_THRESH-1];
- struct rtattr *rt = xfrma[XFRMA_REPLAY_THRESH-1];
+ struct rtattr *rp = xfrma[XFRMA_REPLAY_VAL];
+ struct rtattr *lt = xfrma[XFRMA_LTIME_VAL];
+ struct rtattr *et = xfrma[XFRMA_ETIMER_THRESH];
+ struct rtattr *rt = xfrma[XFRMA_REPLAY_THRESH];
if (rp) {
struct xfrm_replay_state *replay;
- if (RTA_PAYLOAD(rp) < sizeof(*replay))
- goto error;
replay = RTA_DATA(rp);
memcpy(&x->replay, replay, sizeof(*replay));
memcpy(&x->preplay, replay, sizeof(*replay));
if (lt) {
struct xfrm_lifetime_cur *ltime;
- if (RTA_PAYLOAD(lt) < sizeof(*ltime))
- goto error;
ltime = RTA_DATA(lt);
x->curlft.bytes = ltime->bytes;
x->curlft.packets = ltime->packets;
x->curlft.use_time = ltime->use_time;
}
- if (et) {
- if (RTA_PAYLOAD(et) < sizeof(u32))
- goto error;
+ if (et)
x->replay_maxage = *(u32*)RTA_DATA(et);
- }
- if (rt) {
- if (RTA_PAYLOAD(rt) < sizeof(u32))
- goto error;
+ if (rt)
x->replay_maxdiff = *(u32*)RTA_DATA(rt);
- }
-
- return 0;
-error:
- return err;
}
static struct xfrm_state *xfrm_state_construct(struct xfrm_usersa_info *p,
if ((err = attach_one_algo(&x->aalg, &x->props.aalgo,
xfrm_aalg_get_byname,
- xfrma[XFRMA_ALG_AUTH-1])))
+ xfrma[XFRMA_ALG_AUTH])))
goto error;
if ((err = attach_one_algo(&x->ealg, &x->props.ealgo,
xfrm_ealg_get_byname,
- xfrma[XFRMA_ALG_CRYPT-1])))
+ xfrma[XFRMA_ALG_CRYPT])))
goto error;
if ((err = attach_one_algo(&x->calg, &x->props.calgo,
xfrm_calg_get_byname,
- xfrma[XFRMA_ALG_COMP-1])))
+ xfrma[XFRMA_ALG_COMP])))
goto error;
- if ((err = attach_encap_tmpl(&x->encap, xfrma[XFRMA_ENCAP-1])))
+ if ((err = attach_encap_tmpl(&x->encap, xfrma[XFRMA_ENCAP])))
goto error;
- if ((err = attach_one_addr(&x->coaddr, xfrma[XFRMA_COADDR-1])))
+ if ((err = attach_one_addr(&x->coaddr, xfrma[XFRMA_COADDR])))
goto error;
err = xfrm_init_state(x);
if (err)
goto error;
- if ((err = attach_sec_ctx(x, xfrma[XFRMA_SEC_CTX-1])))
+ if ((err = attach_sec_ctx(x, xfrma[XFRMA_SEC_CTX])))
goto error;
x->km.seq = p->seq;
/* override default values from above */
- err = xfrm_update_ae_params(x, (struct rtattr **)xfrma);
- if (err < 0)
- goto error;
+ xfrm_update_ae_params(x, (struct rtattr **)xfrma);
return x;
static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **xfrma)
{
- struct xfrm_usersa_info *p = NLMSG_DATA(nlh);
+ struct xfrm_usersa_info *p = nlmsg_data(nlh);
struct xfrm_state *x;
int err;
struct km_event c;
} else {
xfrm_address_t *saddr = NULL;
- err = verify_one_addr(xfrma, XFRMA_SRCADDR, &saddr);
- if (err)
- goto out;
-
+ verify_one_addr(xfrma, XFRMA_SRCADDR, &saddr);
if (!saddr) {
err = -EINVAL;
goto out;
struct xfrm_state *x;
int err = -ESRCH;
struct km_event c;
- struct xfrm_usersa_id *p = NLMSG_DATA(nlh);
+ struct xfrm_usersa_id *p = nlmsg_data(nlh);
x = xfrm_user_state_lookup(p, xfrma, &err);
if (x == NULL)
int this_idx;
};
+static int copy_sec_ctx(struct xfrm_sec_ctx *s, struct sk_buff *skb)
+{
+ int ctx_size = sizeof(struct xfrm_sec_ctx) + s->ctx_len;
+ struct xfrm_user_sec_ctx *uctx;
+ struct nlattr *attr;
+
+ attr = nla_reserve(skb, XFRMA_SEC_CTX, ctx_size);
+ if (attr == NULL)
+ return -EMSGSIZE;
+
+ uctx = nla_data(attr);
+ uctx->exttype = XFRMA_SEC_CTX;
+ uctx->len = ctx_size;
+ uctx->ctx_doi = s->ctx_doi;
+ uctx->ctx_alg = s->ctx_alg;
+ uctx->ctx_len = s->ctx_len;
+ memcpy(uctx + 1, s->ctx_str, s->ctx_len);
+
+ return 0;
+}
+
static int dump_one_state(struct xfrm_state *x, int count, void *ptr)
{
struct xfrm_dump_info *sp = ptr;
struct sk_buff *skb = sp->out_skb;
struct xfrm_usersa_info *p;
struct nlmsghdr *nlh;
- unsigned char *b = skb_tail_pointer(skb);
if (sp->this_idx < sp->start_idx)
goto out;
- nlh = NLMSG_PUT(skb, NETLINK_CB(in_skb).pid,
- sp->nlmsg_seq,
- XFRM_MSG_NEWSA, sizeof(*p));
- nlh->nlmsg_flags = sp->nlmsg_flags;
+ nlh = nlmsg_put(skb, NETLINK_CB(in_skb).pid, sp->nlmsg_seq,
+ XFRM_MSG_NEWSA, sizeof(*p), sp->nlmsg_flags);
+ if (nlh == NULL)
+ return -EMSGSIZE;
- p = NLMSG_DATA(nlh);
+ p = nlmsg_data(nlh);
copy_to_user_state(x, p);
if (x->aalg)
- RTA_PUT(skb, XFRMA_ALG_AUTH,
- sizeof(*(x->aalg))+(x->aalg->alg_key_len+7)/8, x->aalg);
+ NLA_PUT(skb, XFRMA_ALG_AUTH, alg_len(x->aalg), x->aalg);
if (x->ealg)
- RTA_PUT(skb, XFRMA_ALG_CRYPT,
- sizeof(*(x->ealg))+(x->ealg->alg_key_len+7)/8, x->ealg);
+ NLA_PUT(skb, XFRMA_ALG_CRYPT, alg_len(x->ealg), x->ealg);
if (x->calg)
- RTA_PUT(skb, XFRMA_ALG_COMP, sizeof(*(x->calg)), x->calg);
+ NLA_PUT(skb, XFRMA_ALG_COMP, sizeof(*(x->calg)), x->calg);
if (x->encap)
- RTA_PUT(skb, XFRMA_ENCAP, sizeof(*x->encap), x->encap);
+ NLA_PUT(skb, XFRMA_ENCAP, sizeof(*x->encap), x->encap);
- if (x->security) {
- int ctx_size = sizeof(struct xfrm_sec_ctx) +
- x->security->ctx_len;
- struct rtattr *rt = __RTA_PUT(skb, XFRMA_SEC_CTX, ctx_size);
- struct xfrm_user_sec_ctx *uctx = RTA_DATA(rt);
-
- uctx->exttype = XFRMA_SEC_CTX;
- uctx->len = ctx_size;
- uctx->ctx_doi = x->security->ctx_doi;
- uctx->ctx_alg = x->security->ctx_alg;
- uctx->ctx_len = x->security->ctx_len;
- memcpy(uctx + 1, x->security->ctx_str, x->security->ctx_len);
- }
+ if (x->security && copy_sec_ctx(x->security, skb) < 0)
+ goto nla_put_failure;
if (x->coaddr)
- RTA_PUT(skb, XFRMA_COADDR, sizeof(*x->coaddr), x->coaddr);
+ NLA_PUT(skb, XFRMA_COADDR, sizeof(*x->coaddr), x->coaddr);
if (x->lastused)
- RTA_PUT(skb, XFRMA_LASTUSED, sizeof(x->lastused), &x->lastused);
+ NLA_PUT_U64(skb, XFRMA_LASTUSED, x->lastused);
- nlh->nlmsg_len = skb_tail_pointer(skb) - b;
+ nlmsg_end(skb, nlh);
out:
sp->this_idx++;
return 0;
-nlmsg_failure:
-rtattr_failure:
- nlmsg_trim(skb, b);
- return -1;
+nla_put_failure:
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
}
static int xfrm_dump_sa(struct sk_buff *skb, struct netlink_callback *cb)
struct xfrm_dump_info info;
struct sk_buff *skb;
- skb = alloc_skb(NLMSG_GOODSIZE, GFP_ATOMIC);
+ skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
if (!skb)
return ERR_PTR(-ENOMEM);
return skb;
}
+static inline size_t xfrm_spdinfo_msgsize(void)
+{
+ return NLMSG_ALIGN(4)
+ + nla_total_size(sizeof(struct xfrmu_spdinfo))
+ + nla_total_size(sizeof(struct xfrmu_spdhinfo));
+}
+
static int build_spdinfo(struct sk_buff *skb, u32 pid, u32 seq, u32 flags)
{
struct xfrmk_spdinfo si;
struct rtattr **xfrma)
{
struct sk_buff *r_skb;
- u32 *flags = NLMSG_DATA(nlh);
+ u32 *flags = nlmsg_data(nlh);
u32 spid = NETLINK_CB(skb).pid;
u32 seq = nlh->nlmsg_seq;
- int len = NLMSG_LENGTH(sizeof(u32));
-
- len += RTA_SPACE(sizeof(struct xfrmu_spdinfo));
- len += RTA_SPACE(sizeof(struct xfrmu_spdhinfo));
- r_skb = alloc_skb(len, GFP_ATOMIC);
+ r_skb = nlmsg_new(xfrm_spdinfo_msgsize(), GFP_ATOMIC);
if (r_skb == NULL)
return -ENOMEM;
return nlmsg_unicast(xfrm_nl, r_skb, spid);
}
+static inline size_t xfrm_sadinfo_msgsize(void)
+{
+ return NLMSG_ALIGN(4)
+ + nla_total_size(sizeof(struct xfrmu_sadhinfo))
+ + nla_total_size(4); /* XFRMA_SAD_CNT */
+}
+
static int build_sadinfo(struct sk_buff *skb, u32 pid, u32 seq, u32 flags)
{
struct xfrmk_sadinfo si;
struct rtattr **xfrma)
{
struct sk_buff *r_skb;
- u32 *flags = NLMSG_DATA(nlh);
+ u32 *flags = nlmsg_data(nlh);
u32 spid = NETLINK_CB(skb).pid;
u32 seq = nlh->nlmsg_seq;
- int len = NLMSG_LENGTH(sizeof(u32));
-
- len += RTA_SPACE(sizeof(struct xfrmu_sadhinfo));
- len += RTA_SPACE(sizeof(u32));
-
- r_skb = alloc_skb(len, GFP_ATOMIC);
+ r_skb = nlmsg_new(xfrm_sadinfo_msgsize(), GFP_ATOMIC);
if (r_skb == NULL)
return -ENOMEM;
static int xfrm_get_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **xfrma)
{
- struct xfrm_usersa_id *p = NLMSG_DATA(nlh);
+ struct xfrm_usersa_id *p = nlmsg_data(nlh);
struct xfrm_state *x;
struct sk_buff *resp_skb;
int err = -ESRCH;
if (IS_ERR(resp_skb)) {
err = PTR_ERR(resp_skb);
} else {
- err = netlink_unicast(xfrm_nl, resp_skb,
- NETLINK_CB(skb).pid, MSG_DONTWAIT);
+ err = nlmsg_unicast(xfrm_nl, resp_skb, NETLINK_CB(skb).pid);
}
xfrm_state_put(x);
out_noput:
int family;
int err;
- p = NLMSG_DATA(nlh);
+ p = nlmsg_data(nlh);
err = verify_userspi_info(p);
if (err)
goto out_noput;
goto out;
}
- err = netlink_unicast(xfrm_nl, resp_skb,
- NETLINK_CB(skb).pid, MSG_DONTWAIT);
+ err = nlmsg_unicast(xfrm_nl, resp_skb, NETLINK_CB(skb).pid);
out:
xfrm_state_put(x);
static int copy_from_user_sec_ctx(struct xfrm_policy *pol, struct rtattr **xfrma)
{
- struct rtattr *rt = xfrma[XFRMA_SEC_CTX-1];
+ struct rtattr *rt = xfrma[XFRMA_SEC_CTX];
struct xfrm_user_sec_ctx *uctx;
if (!rt)
static int copy_from_user_tmpl(struct xfrm_policy *pol, struct rtattr **xfrma)
{
- struct rtattr *rt = xfrma[XFRMA_TMPL-1];
+ struct rtattr *rt = xfrma[XFRMA_TMPL];
if (!rt) {
pol->xfrm_nr = 0;
static int copy_from_user_policy_type(u8 *tp, struct rtattr **xfrma)
{
- struct rtattr *rt = xfrma[XFRMA_POLICY_TYPE-1];
+ struct rtattr *rt = xfrma[XFRMA_POLICY_TYPE];
struct xfrm_userpolicy_type *upt;
u8 type = XFRM_POLICY_TYPE_MAIN;
int err;
if (rt) {
- if (rt->rta_len < sizeof(*upt))
- return -EINVAL;
-
upt = RTA_DATA(rt);
type = upt->type;
}
static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **xfrma)
{
- struct xfrm_userpolicy_info *p = NLMSG_DATA(nlh);
+ struct xfrm_userpolicy_info *p = nlmsg_data(nlh);
struct xfrm_policy *xp;
struct km_event c;
int err;
up->ealgos = kp->ealgos;
up->calgos = kp->calgos;
}
- RTA_PUT(skb, XFRMA_TMPL,
- (sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr),
- vec);
-
- return 0;
-rtattr_failure:
- return -1;
-}
-
-static int copy_sec_ctx(struct xfrm_sec_ctx *s, struct sk_buff *skb)
-{
- int ctx_size = sizeof(struct xfrm_sec_ctx) + s->ctx_len;
- struct rtattr *rt = __RTA_PUT(skb, XFRMA_SEC_CTX, ctx_size);
- struct xfrm_user_sec_ctx *uctx = RTA_DATA(rt);
-
- uctx->exttype = XFRMA_SEC_CTX;
- uctx->len = ctx_size;
- uctx->ctx_doi = s->ctx_doi;
- uctx->ctx_alg = s->ctx_alg;
- uctx->ctx_len = s->ctx_len;
- memcpy(uctx + 1, s->ctx_str, s->ctx_len);
- return 0;
-
- rtattr_failure:
- return -1;
+ return nla_put(skb, XFRMA_TMPL,
+ sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr, vec);
}
static inline int copy_to_user_state_sec_ctx(struct xfrm_state *x, struct sk_buff *skb)
}
return 0;
}
+static inline size_t userpolicy_type_attrsize(void)
+{
+#ifdef CONFIG_XFRM_SUB_POLICY
+ return nla_total_size(sizeof(struct xfrm_userpolicy_type));
+#else
+ return 0;
+#endif
+}
#ifdef CONFIG_XFRM_SUB_POLICY
static int copy_to_user_policy_type(u8 type, struct sk_buff *skb)
{
- struct xfrm_userpolicy_type upt;
+ struct xfrm_userpolicy_type upt = {
+ .type = type,
+ };
- memset(&upt, 0, sizeof(upt));
- upt.type = type;
-
- RTA_PUT(skb, XFRMA_POLICY_TYPE, sizeof(upt), &upt);
-
- return 0;
-
-rtattr_failure:
- return -1;
+ return nla_put(skb, XFRMA_POLICY_TYPE, sizeof(upt), &upt);
}
#else
struct sk_buff *in_skb = sp->in_skb;
struct sk_buff *skb = sp->out_skb;
struct nlmsghdr *nlh;
- unsigned char *b = skb_tail_pointer(skb);
if (sp->this_idx < sp->start_idx)
goto out;
- nlh = NLMSG_PUT(skb, NETLINK_CB(in_skb).pid,
- sp->nlmsg_seq,
- XFRM_MSG_NEWPOLICY, sizeof(*p));
- p = NLMSG_DATA(nlh);
- nlh->nlmsg_flags = sp->nlmsg_flags;
+ nlh = nlmsg_put(skb, NETLINK_CB(in_skb).pid, sp->nlmsg_seq,
+ XFRM_MSG_NEWPOLICY, sizeof(*p), sp->nlmsg_flags);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+ p = nlmsg_data(nlh);
copy_to_user_policy(xp, p, dir);
if (copy_to_user_tmpl(xp, skb) < 0)
goto nlmsg_failure;
if (copy_to_user_policy_type(xp->type, skb) < 0)
goto nlmsg_failure;
- nlh->nlmsg_len = skb_tail_pointer(skb) - b;
+ nlmsg_end(skb, nlh);
out:
sp->this_idx++;
return 0;
nlmsg_failure:
- nlmsg_trim(skb, b);
- return -1;
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
}
static int xfrm_dump_policy(struct sk_buff *skb, struct netlink_callback *cb)
struct xfrm_dump_info info;
struct sk_buff *skb;
- skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
+ skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!skb)
return ERR_PTR(-ENOMEM);
struct km_event c;
int delete;
- p = NLMSG_DATA(nlh);
+ p = nlmsg_data(nlh);
delete = nlh->nlmsg_type == XFRM_MSG_DELPOLICY;
err = copy_from_user_policy_type(&type, xfrma);
if (p->index)
xp = xfrm_policy_byid(type, p->dir, p->index, delete, &err);
else {
- struct rtattr *rt = xfrma[XFRMA_SEC_CTX-1];
+ struct rtattr *rt = xfrma[XFRMA_SEC_CTX];
struct xfrm_policy tmp;
err = verify_sec_ctx_len(xfrma);
if (IS_ERR(resp_skb)) {
err = PTR_ERR(resp_skb);
} else {
- err = netlink_unicast(xfrm_nl, resp_skb,
- NETLINK_CB(skb).pid,
- MSG_DONTWAIT);
+ err = nlmsg_unicast(xfrm_nl, resp_skb,
+ NETLINK_CB(skb).pid);
}
} else {
xfrm_audit_log(NETLINK_CB(skb).loginuid, NETLINK_CB(skb).sid,
struct rtattr **xfrma)
{
struct km_event c;
- struct xfrm_usersa_flush *p = NLMSG_DATA(nlh);
+ struct xfrm_usersa_flush *p = nlmsg_data(nlh);
struct xfrm_audit audit_info;
+ int err;
audit_info.loginuid = NETLINK_CB(skb).loginuid;
audit_info.secid = NETLINK_CB(skb).sid;
- xfrm_state_flush(p->proto, &audit_info);
+ err = xfrm_state_flush(p->proto, &audit_info);
+ if (err)
+ return err;
c.data.proto = p->proto;
c.event = nlh->nlmsg_type;
c.seq = nlh->nlmsg_seq;
return 0;
}
+static inline size_t xfrm_aevent_msgsize(void)
+{
+ return NLMSG_ALIGN(sizeof(struct xfrm_aevent_id))
+ + nla_total_size(sizeof(struct xfrm_replay_state))
+ + nla_total_size(sizeof(struct xfrm_lifetime_cur))
+ + nla_total_size(4) /* XFRM_AE_RTHR */
+ + nla_total_size(4); /* XFRM_AE_ETHR */
+}
static int build_aevent(struct sk_buff *skb, struct xfrm_state *x, struct km_event *c)
{
struct xfrm_aevent_id *id;
struct nlmsghdr *nlh;
- struct xfrm_lifetime_cur ltime;
- unsigned char *b = skb_tail_pointer(skb);
- nlh = NLMSG_PUT(skb, c->pid, c->seq, XFRM_MSG_NEWAE, sizeof(*id));
- id = NLMSG_DATA(nlh);
- nlh->nlmsg_flags = 0;
+ nlh = nlmsg_put(skb, c->pid, c->seq, XFRM_MSG_NEWAE, sizeof(*id), 0);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+ id = nlmsg_data(nlh);
memcpy(&id->sa_id.daddr, &x->id.daddr,sizeof(x->id.daddr));
id->sa_id.spi = x->id.spi;
id->sa_id.family = x->props.family;
id->reqid = x->props.reqid;
id->flags = c->data.aevent;
- RTA_PUT(skb, XFRMA_REPLAY_VAL, sizeof(x->replay), &x->replay);
-
- ltime.bytes = x->curlft.bytes;
- ltime.packets = x->curlft.packets;
- ltime.add_time = x->curlft.add_time;
- ltime.use_time = x->curlft.use_time;
+ NLA_PUT(skb, XFRMA_REPLAY_VAL, sizeof(x->replay), &x->replay);
+ NLA_PUT(skb, XFRMA_LTIME_VAL, sizeof(x->curlft), &x->curlft);
- RTA_PUT(skb, XFRMA_LTIME_VAL, sizeof(struct xfrm_lifetime_cur), <ime);
-
- if (id->flags&XFRM_AE_RTHR) {
- RTA_PUT(skb,XFRMA_REPLAY_THRESH,sizeof(u32),&x->replay_maxdiff);
- }
+ if (id->flags & XFRM_AE_RTHR)
+ NLA_PUT_U32(skb, XFRMA_REPLAY_THRESH, x->replay_maxdiff);
- if (id->flags&XFRM_AE_ETHR) {
- u32 etimer = x->replay_maxage*10/HZ;
- RTA_PUT(skb,XFRMA_ETIMER_THRESH,sizeof(u32),&etimer);
- }
+ if (id->flags & XFRM_AE_ETHR)
+ NLA_PUT_U32(skb, XFRMA_ETIMER_THRESH,
+ x->replay_maxage * 10 / HZ);
- nlh->nlmsg_len = skb_tail_pointer(skb) - b;
- return skb->len;
+ return nlmsg_end(skb, nlh);
-rtattr_failure:
-nlmsg_failure:
- nlmsg_trim(skb, b);
- return -1;
+nla_put_failure:
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
}
static int xfrm_get_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
struct sk_buff *r_skb;
int err;
struct km_event c;
- struct xfrm_aevent_id *p = NLMSG_DATA(nlh);
- int len = NLMSG_LENGTH(sizeof(struct xfrm_aevent_id));
+ struct xfrm_aevent_id *p = nlmsg_data(nlh);
struct xfrm_usersa_id *id = &p->sa_id;
- len += RTA_SPACE(sizeof(struct xfrm_replay_state));
- len += RTA_SPACE(sizeof(struct xfrm_lifetime_cur));
-
- if (p->flags&XFRM_AE_RTHR)
- len+=RTA_SPACE(sizeof(u32));
-
- if (p->flags&XFRM_AE_ETHR)
- len+=RTA_SPACE(sizeof(u32));
-
- r_skb = alloc_skb(len, GFP_ATOMIC);
+ r_skb = nlmsg_new(xfrm_aevent_msgsize(), GFP_ATOMIC);
if (r_skb == NULL)
return -ENOMEM;
if (build_aevent(r_skb, x, &c) < 0)
BUG();
- err = netlink_unicast(xfrm_nl, r_skb,
- NETLINK_CB(skb).pid, MSG_DONTWAIT);
+ err = nlmsg_unicast(xfrm_nl, r_skb, NETLINK_CB(skb).pid);
spin_unlock_bh(&x->lock);
xfrm_state_put(x);
return err;
struct xfrm_state *x;
struct km_event c;
int err = - EINVAL;
- struct xfrm_aevent_id *p = NLMSG_DATA(nlh);
- struct rtattr *rp = xfrma[XFRMA_REPLAY_VAL-1];
- struct rtattr *lt = xfrma[XFRMA_LTIME_VAL-1];
+ struct xfrm_aevent_id *p = nlmsg_data(nlh);
+ struct rtattr *rp = xfrma[XFRMA_REPLAY_VAL];
+ struct rtattr *lt = xfrma[XFRMA_LTIME_VAL];
if (!lt && !rp)
return err;
goto out;
spin_lock_bh(&x->lock);
- err = xfrm_update_ae_params(x, xfrma);
+ xfrm_update_ae_params(x, xfrma);
spin_unlock_bh(&x->lock);
- if (err < 0)
- goto out;
c.event = nlh->nlmsg_type;
c.seq = nlh->nlmsg_seq;
audit_info.loginuid = NETLINK_CB(skb).loginuid;
audit_info.secid = NETLINK_CB(skb).sid;
- xfrm_policy_flush(type, &audit_info);
+ err = xfrm_policy_flush(type, &audit_info);
+ if (err)
+ return err;
c.data.type = type;
c.event = nlh->nlmsg_type;
c.seq = nlh->nlmsg_seq;
struct rtattr **xfrma)
{
struct xfrm_policy *xp;
- struct xfrm_user_polexpire *up = NLMSG_DATA(nlh);
+ struct xfrm_user_polexpire *up = nlmsg_data(nlh);
struct xfrm_userpolicy_info *p = &up->pol;
u8 type = XFRM_POLICY_TYPE_MAIN;
int err = -ENOENT;
if (p->index)
xp = xfrm_policy_byid(type, p->dir, p->index, 0, &err);
else {
- struct rtattr *rt = xfrma[XFRMA_SEC_CTX-1];
+ struct rtattr *rt = xfrma[XFRMA_SEC_CTX];
struct xfrm_policy tmp;
err = verify_sec_ctx_len(xfrma);
{
struct xfrm_state *x;
int err;
- struct xfrm_user_expire *ue = NLMSG_DATA(nlh);
+ struct xfrm_user_expire *ue = nlmsg_data(nlh);
struct xfrm_usersa_info *p = &ue->state;
x = xfrm_state_lookup(&p->id.daddr, p->id.spi, p->id.proto, p->family);
struct xfrm_policy *xp;
struct xfrm_user_tmpl *ut;
int i;
- struct rtattr *rt = xfrma[XFRMA_TMPL-1];
+ struct rtattr *rt = xfrma[XFRMA_TMPL];
- struct xfrm_user_acquire *ua = NLMSG_DATA(nlh);
+ struct xfrm_user_acquire *ua = nlmsg_data(nlh);
struct xfrm_state *x = xfrm_state_alloc();
int err = -ENOMEM;
}
#ifdef CONFIG_XFRM_MIGRATE
-static int verify_user_migrate(struct rtattr **xfrma)
-{
- struct rtattr *rt = xfrma[XFRMA_MIGRATE-1];
- struct xfrm_user_migrate *um;
-
- if (!rt)
- return -EINVAL;
-
- if ((rt->rta_len - sizeof(*rt)) < sizeof(*um))
- return -EINVAL;
-
- return 0;
-}
-
static int copy_from_user_migrate(struct xfrm_migrate *ma,
struct rtattr **xfrma, int *num)
{
- struct rtattr *rt = xfrma[XFRMA_MIGRATE-1];
+ struct rtattr *rt = xfrma[XFRMA_MIGRATE];
struct xfrm_user_migrate *um;
int i, num_migrate;
static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
struct rtattr **xfrma)
{
- struct xfrm_userpolicy_id *pi = NLMSG_DATA(nlh);
+ struct xfrm_userpolicy_id *pi = nlmsg_data(nlh);
struct xfrm_migrate m[XFRM_MAX_DEPTH];
u8 type;
int err;
int n = 0;
- err = verify_user_migrate((struct rtattr **)xfrma);
- if (err)
- return err;
+ if (xfrma[XFRMA_MIGRATE] == NULL)
+ return -EINVAL;
err = copy_from_user_policy_type(&type, (struct rtattr **)xfrma);
if (err)
memcpy(&um.new_daddr, &m->new_daddr, sizeof(um.new_daddr));
memcpy(&um.new_saddr, &m->new_saddr, sizeof(um.new_saddr));
- RTA_PUT(skb, XFRMA_MIGRATE, sizeof(um), &um);
- return 0;
+ return nla_put(skb, XFRMA_MIGRATE, sizeof(um), &um);
+}
-rtattr_failure:
- return -1;
+static inline size_t xfrm_migrate_msgsize(int num_migrate)
+{
+ return NLMSG_ALIGN(sizeof(struct xfrm_userpolicy_id))
+ + nla_total_size(sizeof(struct xfrm_user_migrate) * num_migrate)
+ + userpolicy_type_attrsize();
}
static int build_migrate(struct sk_buff *skb, struct xfrm_migrate *m,
struct xfrm_migrate *mp;
struct xfrm_userpolicy_id *pol_id;
struct nlmsghdr *nlh;
- unsigned char *b = skb_tail_pointer(skb);
int i;
- nlh = NLMSG_PUT(skb, 0, 0, XFRM_MSG_MIGRATE, sizeof(*pol_id));
- pol_id = NLMSG_DATA(nlh);
- nlh->nlmsg_flags = 0;
+ nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_MIGRATE, sizeof(*pol_id), 0);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+ pol_id = nlmsg_data(nlh);
/* copy data from selector, dir, and type to the pol_id */
memset(pol_id, 0, sizeof(*pol_id));
memcpy(&pol_id->sel, sel, sizeof(pol_id->sel));
goto nlmsg_failure;
}
- nlh->nlmsg_len = skb_tail_pointer(skb) - b;
- return skb->len;
+ return nlmsg_end(skb, nlh);
nlmsg_failure:
- nlmsg_trim(skb, b);
- return -1;
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
}
static int xfrm_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
struct xfrm_migrate *m, int num_migrate)
{
struct sk_buff *skb;
- size_t len;
- len = RTA_SPACE(sizeof(struct xfrm_user_migrate) * num_migrate);
- len += NLMSG_SPACE(sizeof(struct xfrm_userpolicy_id));
-#ifdef CONFIG_XFRM_SUB_POLICY
- len += RTA_SPACE(sizeof(struct xfrm_userpolicy_type));
-#endif
- skb = alloc_skb(len, GFP_ATOMIC);
+ skb = nlmsg_new(xfrm_migrate_msgsize(num_migrate), GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
if (build_migrate(skb, m, num_migrate, sel, dir, type) < 0)
BUG();
- NETLINK_CB(skb).dst_group = XFRMNLGRP_MIGRATE;
- return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_MIGRATE,
- GFP_ATOMIC);
+ return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_MIGRATE, GFP_ATOMIC);
}
#else
static int xfrm_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
}
#endif
-#define XMSGSIZE(type) NLMSG_LENGTH(sizeof(struct type))
+#define XMSGSIZE(type) sizeof(struct type)
static const int xfrm_msg_min[XFRM_NR_MSGTYPES] = {
[XFRM_MSG_NEWSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_info),
[XFRM_MSG_UPDSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_info),
[XFRM_MSG_POLEXPIRE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_polexpire),
[XFRM_MSG_FLUSHSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_flush),
- [XFRM_MSG_FLUSHPOLICY - XFRM_MSG_BASE] = NLMSG_LENGTH(0),
+ [XFRM_MSG_FLUSHPOLICY - XFRM_MSG_BASE] = 0,
[XFRM_MSG_NEWAE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_aevent_id),
[XFRM_MSG_GETAE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_aevent_id),
[XFRM_MSG_REPORT - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_report),
[XFRM_MSG_MIGRATE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_id),
- [XFRM_MSG_GETSADINFO - XFRM_MSG_BASE] = NLMSG_LENGTH(sizeof(u32)),
- [XFRM_MSG_GETSPDINFO - XFRM_MSG_BASE] = NLMSG_LENGTH(sizeof(u32)),
+ [XFRM_MSG_GETSADINFO - XFRM_MSG_BASE] = sizeof(u32),
+ [XFRM_MSG_GETSPDINFO - XFRM_MSG_BASE] = sizeof(u32),
};
#undef XMSGSIZE
+static const struct nla_policy xfrma_policy[XFRMA_MAX+1] = {
+ [XFRMA_ALG_AUTH] = { .len = sizeof(struct xfrm_algo) },
+ [XFRMA_ALG_CRYPT] = { .len = sizeof(struct xfrm_algo) },
+ [XFRMA_ALG_COMP] = { .len = sizeof(struct xfrm_algo) },
+ [XFRMA_ENCAP] = { .len = sizeof(struct xfrm_encap_tmpl) },
+ [XFRMA_TMPL] = { .len = sizeof(struct xfrm_user_tmpl) },
+ [XFRMA_SEC_CTX] = { .len = sizeof(struct xfrm_sec_ctx) },
+ [XFRMA_LTIME_VAL] = { .len = sizeof(struct xfrm_lifetime_cur) },
+ [XFRMA_REPLAY_VAL] = { .len = sizeof(struct xfrm_replay_state) },
+ [XFRMA_REPLAY_THRESH] = { .type = NLA_U32 },
+ [XFRMA_ETIMER_THRESH] = { .type = NLA_U32 },
+ [XFRMA_SRCADDR] = { .len = sizeof(xfrm_address_t) },
+ [XFRMA_COADDR] = { .len = sizeof(xfrm_address_t) },
+ [XFRMA_POLICY_TYPE] = { .len = sizeof(struct xfrm_userpolicy_type)},
+ [XFRMA_MIGRATE] = { .len = sizeof(struct xfrm_user_migrate) },
+};
+
static struct xfrm_link {
int (*doit)(struct sk_buff *, struct nlmsghdr *, struct rtattr **);
int (*dump)(struct sk_buff *, struct netlink_callback *);
static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
{
- struct rtattr *xfrma[XFRMA_MAX];
+ struct nlattr *xfrma[XFRMA_MAX+1];
struct xfrm_link *link;
- int type, min_len;
+ int type, err;
type = nlh->nlmsg_type;
if (type > XFRM_MSG_MAX)
return netlink_dump_start(xfrm_nl, skb, nlh, link->dump, NULL);
}
- memset(xfrma, 0, sizeof(xfrma));
-
- if (nlh->nlmsg_len < (min_len = xfrm_msg_min[type]))
- return -EINVAL;
-
- if (nlh->nlmsg_len > min_len) {
- int attrlen = nlh->nlmsg_len - NLMSG_ALIGN(min_len);
- struct rtattr *attr = (void *) nlh + NLMSG_ALIGN(min_len);
-
- while (RTA_OK(attr, attrlen)) {
- unsigned short flavor = attr->rta_type;
- if (flavor) {
- if (flavor > XFRMA_MAX)
- return -EINVAL;
- xfrma[flavor - 1] = attr;
- }
- attr = RTA_NEXT(attr, attrlen);
- }
- }
+ err = nlmsg_parse(nlh, xfrm_msg_min[type], xfrma, XFRMA_MAX,
+ xfrma_policy);
+ if (err < 0)
+ return err;
if (link->doit == NULL)
return -EINVAL;
- return link->doit(skb, nlh, xfrma);
+ return link->doit(skb, nlh, (struct rtattr **) xfrma);
}
static void xfrm_netlink_rcv(struct sock *sk, int len)
} while (qlen);
}
+static inline size_t xfrm_expire_msgsize(void)
+{
+ return NLMSG_ALIGN(sizeof(struct xfrm_user_expire));
+}
+
static int build_expire(struct sk_buff *skb, struct xfrm_state *x, struct km_event *c)
{
struct xfrm_user_expire *ue;
struct nlmsghdr *nlh;
- unsigned char *b = skb_tail_pointer(skb);
- nlh = NLMSG_PUT(skb, c->pid, 0, XFRM_MSG_EXPIRE,
- sizeof(*ue));
- ue = NLMSG_DATA(nlh);
- nlh->nlmsg_flags = 0;
+ nlh = nlmsg_put(skb, c->pid, 0, XFRM_MSG_EXPIRE, sizeof(*ue), 0);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+ ue = nlmsg_data(nlh);
copy_to_user_state(x, &ue->state);
ue->hard = (c->data.hard != 0) ? 1 : 0;
- nlh->nlmsg_len = skb_tail_pointer(skb) - b;
- return skb->len;
-
-nlmsg_failure:
- nlmsg_trim(skb, b);
- return -1;
+ return nlmsg_end(skb, nlh);
}
static int xfrm_exp_state_notify(struct xfrm_state *x, struct km_event *c)
{
struct sk_buff *skb;
- int len = NLMSG_LENGTH(sizeof(struct xfrm_user_expire));
- skb = alloc_skb(len, GFP_ATOMIC);
+ skb = nlmsg_new(xfrm_expire_msgsize(), GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
if (build_expire(skb, x, c) < 0)
BUG();
- NETLINK_CB(skb).dst_group = XFRMNLGRP_EXPIRE;
- return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_EXPIRE, GFP_ATOMIC);
+ return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_EXPIRE, GFP_ATOMIC);
}
static int xfrm_aevent_state_notify(struct xfrm_state *x, struct km_event *c)
{
struct sk_buff *skb;
- int len = NLMSG_LENGTH(sizeof(struct xfrm_aevent_id));
- len += RTA_SPACE(sizeof(struct xfrm_replay_state));
- len += RTA_SPACE(sizeof(struct xfrm_lifetime_cur));
- skb = alloc_skb(len, GFP_ATOMIC);
+ skb = nlmsg_new(xfrm_aevent_msgsize(), GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
if (build_aevent(skb, x, c) < 0)
BUG();
- NETLINK_CB(skb).dst_group = XFRMNLGRP_AEVENTS;
- return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_AEVENTS, GFP_ATOMIC);
+ return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_AEVENTS, GFP_ATOMIC);
}
static int xfrm_notify_sa_flush(struct km_event *c)
struct xfrm_usersa_flush *p;
struct nlmsghdr *nlh;
struct sk_buff *skb;
- sk_buff_data_t b;
- int len = NLMSG_LENGTH(sizeof(struct xfrm_usersa_flush));
+ int len = NLMSG_ALIGN(sizeof(struct xfrm_usersa_flush));
- skb = alloc_skb(len, GFP_ATOMIC);
+ skb = nlmsg_new(len, GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
- b = skb->tail;
- nlh = NLMSG_PUT(skb, c->pid, c->seq,
- XFRM_MSG_FLUSHSA, sizeof(*p));
- nlh->nlmsg_flags = 0;
+ nlh = nlmsg_put(skb, c->pid, c->seq, XFRM_MSG_FLUSHSA, sizeof(*p), 0);
+ if (nlh == NULL) {
+ kfree_skb(skb);
+ return -EMSGSIZE;
+ }
- p = NLMSG_DATA(nlh);
+ p = nlmsg_data(nlh);
p->proto = c->data.proto;
- nlh->nlmsg_len = skb->tail - b;
+ nlmsg_end(skb, nlh);
- NETLINK_CB(skb).dst_group = XFRMNLGRP_SA;
- return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_SA, GFP_ATOMIC);
-
-nlmsg_failure:
- kfree_skb(skb);
- return -1;
+ return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_SA, GFP_ATOMIC);
}
-static inline int xfrm_sa_len(struct xfrm_state *x)
+static inline size_t xfrm_sa_len(struct xfrm_state *x)
{
- int l = 0;
+ size_t l = 0;
if (x->aalg)
- l += RTA_SPACE(sizeof(*x->aalg) + (x->aalg->alg_key_len+7)/8);
+ l += nla_total_size(alg_len(x->aalg));
if (x->ealg)
- l += RTA_SPACE(sizeof(*x->ealg) + (x->ealg->alg_key_len+7)/8);
+ l += nla_total_size(alg_len(x->ealg));
if (x->calg)
- l += RTA_SPACE(sizeof(*x->calg));
+ l += nla_total_size(sizeof(*x->calg));
if (x->encap)
- l += RTA_SPACE(sizeof(*x->encap));
+ l += nla_total_size(sizeof(*x->encap));
return l;
}
struct xfrm_usersa_id *id;
struct nlmsghdr *nlh;
struct sk_buff *skb;
- sk_buff_data_t b;
int len = xfrm_sa_len(x);
int headlen;
headlen = sizeof(*p);
if (c->event == XFRM_MSG_DELSA) {
- len += RTA_SPACE(headlen);
+ len += nla_total_size(headlen);
headlen = sizeof(*id);
}
- len += NLMSG_SPACE(headlen);
+ len += NLMSG_ALIGN(headlen);
- skb = alloc_skb(len, GFP_ATOMIC);
+ skb = nlmsg_new(len, GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
- b = skb->tail;
- nlh = NLMSG_PUT(skb, c->pid, c->seq, c->event, headlen);
- nlh->nlmsg_flags = 0;
+ nlh = nlmsg_put(skb, c->pid, c->seq, c->event, headlen, 0);
+ if (nlh == NULL)
+ goto nla_put_failure;
- p = NLMSG_DATA(nlh);
+ p = nlmsg_data(nlh);
if (c->event == XFRM_MSG_DELSA) {
- id = NLMSG_DATA(nlh);
+ struct nlattr *attr;
+
+ id = nlmsg_data(nlh);
memcpy(&id->daddr, &x->id.daddr, sizeof(id->daddr));
id->spi = x->id.spi;
id->family = x->props.family;
id->proto = x->id.proto;
- p = RTA_DATA(__RTA_PUT(skb, XFRMA_SA, sizeof(*p)));
+ attr = nla_reserve(skb, XFRMA_SA, sizeof(*p));
+ if (attr == NULL)
+ goto nla_put_failure;
+
+ p = nla_data(attr);
}
copy_to_user_state(x, p);
if (x->aalg)
- RTA_PUT(skb, XFRMA_ALG_AUTH,
- sizeof(*(x->aalg))+(x->aalg->alg_key_len+7)/8, x->aalg);
+ NLA_PUT(skb, XFRMA_ALG_AUTH, alg_len(x->aalg), x->aalg);
if (x->ealg)
- RTA_PUT(skb, XFRMA_ALG_CRYPT,
- sizeof(*(x->ealg))+(x->ealg->alg_key_len+7)/8, x->ealg);
+ NLA_PUT(skb, XFRMA_ALG_CRYPT, alg_len(x->ealg), x->ealg);
if (x->calg)
- RTA_PUT(skb, XFRMA_ALG_COMP, sizeof(*(x->calg)), x->calg);
+ NLA_PUT(skb, XFRMA_ALG_COMP, sizeof(*(x->calg)), x->calg);
if (x->encap)
- RTA_PUT(skb, XFRMA_ENCAP, sizeof(*x->encap), x->encap);
+ NLA_PUT(skb, XFRMA_ENCAP, sizeof(*x->encap), x->encap);
- nlh->nlmsg_len = skb->tail - b;
+ nlmsg_end(skb, nlh);
- NETLINK_CB(skb).dst_group = XFRMNLGRP_SA;
- return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_SA, GFP_ATOMIC);
+ return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_SA, GFP_ATOMIC);
-nlmsg_failure:
-rtattr_failure:
+nla_put_failure:
kfree_skb(skb);
return -1;
}
}
+static inline size_t 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)
+ + nla_total_size(xfrm_user_sec_ctx_size(x->security))
+ + userpolicy_type_attrsize();
+}
+
static int build_acquire(struct sk_buff *skb, struct xfrm_state *x,
struct xfrm_tmpl *xt, struct xfrm_policy *xp,
int dir)
{
struct xfrm_user_acquire *ua;
struct nlmsghdr *nlh;
- unsigned char *b = skb_tail_pointer(skb);
__u32 seq = xfrm_get_acqseq();
- nlh = NLMSG_PUT(skb, 0, 0, XFRM_MSG_ACQUIRE,
- sizeof(*ua));
- ua = NLMSG_DATA(nlh);
- nlh->nlmsg_flags = 0;
+ nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_ACQUIRE, sizeof(*ua), 0);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+ ua = nlmsg_data(nlh);
memcpy(&ua->id, &x->id, sizeof(ua->id));
memcpy(&ua->saddr, &x->props.saddr, sizeof(ua->saddr));
memcpy(&ua->sel, &x->sel, sizeof(ua->sel));
if (copy_to_user_policy_type(xp->type, skb) < 0)
goto nlmsg_failure;
- nlh->nlmsg_len = skb_tail_pointer(skb) - b;
- return skb->len;
+ return nlmsg_end(skb, nlh);
nlmsg_failure:
- nlmsg_trim(skb, b);
- return -1;
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
}
static int xfrm_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *xt,
struct xfrm_policy *xp, int dir)
{
struct sk_buff *skb;
- size_t len;
- len = RTA_SPACE(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr);
- len += NLMSG_SPACE(sizeof(struct xfrm_user_acquire));
- len += RTA_SPACE(xfrm_user_sec_ctx_size(x->security));
-#ifdef CONFIG_XFRM_SUB_POLICY
- len += RTA_SPACE(sizeof(struct xfrm_userpolicy_type));
-#endif
- skb = alloc_skb(len, GFP_ATOMIC);
+ skb = nlmsg_new(xfrm_acquire_msgsize(x, xp), GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
if (build_acquire(skb, x, xt, xp, dir) < 0)
BUG();
- NETLINK_CB(skb).dst_group = XFRMNLGRP_ACQUIRE;
- return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_ACQUIRE, GFP_ATOMIC);
+ return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_ACQUIRE, GFP_ATOMIC);
}
/* User gives us xfrm_user_policy_info followed by an array of 0
return xp;
}
+static inline size_t 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)
+ + nla_total_size(xfrm_user_sec_ctx_size(xp->security))
+ + userpolicy_type_attrsize();
+}
+
static int build_polexpire(struct sk_buff *skb, struct xfrm_policy *xp,
int dir, struct km_event *c)
{
struct xfrm_user_polexpire *upe;
struct nlmsghdr *nlh;
int hard = c->data.hard;
- unsigned char *b = skb_tail_pointer(skb);
- nlh = NLMSG_PUT(skb, c->pid, 0, XFRM_MSG_POLEXPIRE, sizeof(*upe));
- upe = NLMSG_DATA(nlh);
- nlh->nlmsg_flags = 0;
+ nlh = nlmsg_put(skb, c->pid, 0, XFRM_MSG_POLEXPIRE, sizeof(*upe), 0);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+ upe = nlmsg_data(nlh);
copy_to_user_policy(xp, &upe->pol, dir);
if (copy_to_user_tmpl(xp, skb) < 0)
goto nlmsg_failure;
goto nlmsg_failure;
upe->hard = !!hard;
- nlh->nlmsg_len = skb_tail_pointer(skb) - b;
- return skb->len;
+ return nlmsg_end(skb, nlh);
nlmsg_failure:
- nlmsg_trim(skb, b);
- return -1;
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
}
static int xfrm_exp_policy_notify(struct xfrm_policy *xp, int dir, struct km_event *c)
{
struct sk_buff *skb;
- size_t len;
- len = RTA_SPACE(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr);
- len += NLMSG_SPACE(sizeof(struct xfrm_user_polexpire));
- len += RTA_SPACE(xfrm_user_sec_ctx_size(xp->security));
-#ifdef CONFIG_XFRM_SUB_POLICY
- len += RTA_SPACE(sizeof(struct xfrm_userpolicy_type));
-#endif
- skb = alloc_skb(len, GFP_ATOMIC);
+ skb = nlmsg_new(xfrm_polexpire_msgsize(xp), GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
if (build_polexpire(skb, xp, dir, c) < 0)
BUG();
- NETLINK_CB(skb).dst_group = XFRMNLGRP_EXPIRE;
- return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_EXPIRE, GFP_ATOMIC);
+ return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_EXPIRE, GFP_ATOMIC);
}
static int xfrm_notify_policy(struct xfrm_policy *xp, int dir, struct km_event *c)
struct xfrm_userpolicy_id *id;
struct nlmsghdr *nlh;
struct sk_buff *skb;
- sk_buff_data_t b;
- int len = RTA_SPACE(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr);
+ int len = nla_total_size(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr);
int headlen;
headlen = sizeof(*p);
if (c->event == XFRM_MSG_DELPOLICY) {
- len += RTA_SPACE(headlen);
+ len += nla_total_size(headlen);
headlen = sizeof(*id);
}
-#ifdef CONFIG_XFRM_SUB_POLICY
- len += RTA_SPACE(sizeof(struct xfrm_userpolicy_type));
-#endif
- len += NLMSG_SPACE(headlen);
+ len += userpolicy_type_attrsize();
+ len += NLMSG_ALIGN(headlen);
- skb = alloc_skb(len, GFP_ATOMIC);
+ skb = nlmsg_new(len, GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
- b = skb->tail;
- nlh = NLMSG_PUT(skb, c->pid, c->seq, c->event, headlen);
+ nlh = nlmsg_put(skb, c->pid, c->seq, c->event, headlen, 0);
+ if (nlh == NULL)
+ goto nlmsg_failure;
- p = NLMSG_DATA(nlh);
+ p = nlmsg_data(nlh);
if (c->event == XFRM_MSG_DELPOLICY) {
- id = NLMSG_DATA(nlh);
+ struct nlattr *attr;
+
+ id = nlmsg_data(nlh);
memset(id, 0, sizeof(*id));
id->dir = dir;
if (c->data.byid)
else
memcpy(&id->sel, &xp->selector, sizeof(id->sel));
- p = RTA_DATA(__RTA_PUT(skb, XFRMA_POLICY, sizeof(*p)));
- }
+ attr = nla_reserve(skb, XFRMA_POLICY, sizeof(*p));
+ if (attr == NULL)
+ goto nlmsg_failure;
- nlh->nlmsg_flags = 0;
+ p = nla_data(attr);
+ }
copy_to_user_policy(xp, p, dir);
if (copy_to_user_tmpl(xp, skb) < 0)
if (copy_to_user_policy_type(xp->type, skb) < 0)
goto nlmsg_failure;
- nlh->nlmsg_len = skb->tail - b;
+ nlmsg_end(skb, nlh);
- NETLINK_CB(skb).dst_group = XFRMNLGRP_POLICY;
- return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_POLICY, GFP_ATOMIC);
+ return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_POLICY, GFP_ATOMIC);
nlmsg_failure:
-rtattr_failure:
kfree_skb(skb);
return -1;
}
{
struct nlmsghdr *nlh;
struct sk_buff *skb;
- sk_buff_data_t b;
- int len = 0;
-#ifdef CONFIG_XFRM_SUB_POLICY
- len += RTA_SPACE(sizeof(struct xfrm_userpolicy_type));
-#endif
- len += NLMSG_LENGTH(0);
- skb = alloc_skb(len, GFP_ATOMIC);
+ skb = nlmsg_new(userpolicy_type_attrsize(), GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
- b = skb->tail;
-
- nlh = NLMSG_PUT(skb, c->pid, c->seq, XFRM_MSG_FLUSHPOLICY, 0);
- nlh->nlmsg_flags = 0;
+ nlh = nlmsg_put(skb, c->pid, c->seq, XFRM_MSG_FLUSHPOLICY, 0, 0);
+ if (nlh == NULL)
+ goto nlmsg_failure;
if (copy_to_user_policy_type(c->data.type, skb) < 0)
goto nlmsg_failure;
- nlh->nlmsg_len = skb->tail - b;
+ nlmsg_end(skb, nlh);
- NETLINK_CB(skb).dst_group = XFRMNLGRP_POLICY;
- return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_POLICY, GFP_ATOMIC);
+ return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_POLICY, GFP_ATOMIC);
nlmsg_failure:
kfree_skb(skb);
}
+static inline size_t xfrm_report_msgsize(void)
+{
+ return NLMSG_ALIGN(sizeof(struct xfrm_user_report));
+}
+
static int build_report(struct sk_buff *skb, u8 proto,
struct xfrm_selector *sel, xfrm_address_t *addr)
{
struct xfrm_user_report *ur;
struct nlmsghdr *nlh;
- unsigned char *b = skb_tail_pointer(skb);
- nlh = NLMSG_PUT(skb, 0, 0, XFRM_MSG_REPORT, sizeof(*ur));
- ur = NLMSG_DATA(nlh);
- nlh->nlmsg_flags = 0;
+ nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_REPORT, sizeof(*ur), 0);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+ ur = nlmsg_data(nlh);
ur->proto = proto;
memcpy(&ur->sel, sel, sizeof(ur->sel));
if (addr)
- RTA_PUT(skb, XFRMA_COADDR, sizeof(*addr), addr);
+ NLA_PUT(skb, XFRMA_COADDR, sizeof(*addr), addr);
- nlh->nlmsg_len = skb_tail_pointer(skb) - b;
- return skb->len;
+ return nlmsg_end(skb, nlh);
-nlmsg_failure:
-rtattr_failure:
- nlmsg_trim(skb, b);
- return -1;
+nla_put_failure:
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
}
static int xfrm_send_report(u8 proto, struct xfrm_selector *sel,
xfrm_address_t *addr)
{
struct sk_buff *skb;
- size_t len;
- len = NLMSG_ALIGN(NLMSG_LENGTH(sizeof(struct xfrm_user_report)));
- skb = alloc_skb(len, GFP_ATOMIC);
+ skb = nlmsg_new(xfrm_report_msgsize(), GFP_ATOMIC);
if (skb == NULL)
return -ENOMEM;
if (build_report(skb, proto, sel, addr) < 0)
BUG();
- NETLINK_CB(skb).dst_group = XFRMNLGRP_REPORT;
- return netlink_broadcast(xfrm_nl, skb, 0, XFRMNLGRP_REPORT, GFP_ATOMIC);
+ return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_REPORT, GFP_ATOMIC);
}
static struct xfrm_mgr netlink_mgr = {
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff