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authorThomas Graf <tgraf@suug.ch>2007-08-22 13:59:43 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:48:23 -0700
commitfab448991df4ecca6c244e23982c70f7e715b864 (patch)
treef4f0dd583f2934da4bb4b1621dfebb03c9d6a5ba /net
parentcf5cb79f6946063b04be3df16dcaa781e48bdbef (diff)
[XFRM] netlink: Enhance indexing of the attribute array
nlmsg_parse() puts attributes at array[type] so the indexing method can be simpilfied by removing the obscuring "- 1". Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/xfrm/xfrm_user.c80
1 files changed, 39 insertions, 41 deletions
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 1371a0ae060..8c323b187e6 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -40,7 +40,7 @@ static inline int alg_len(struct xfrm_algo *alg)
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;
if (!rt)
@@ -78,7 +78,7 @@ static int verify_one_alg(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];
+ struct rtattr *rt = xfrma[type];
if (rt && addrp)
*addrp = RTA_DATA(rt);
@@ -86,7 +86,7 @@ static void verify_one_addr(struct rtattr **xfrma, enum xfrm_attr_type_t type,
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;
if (!rt)
@@ -125,35 +125,35 @@ static int verify_newsa_info(struct xfrm_usersa_info *p,
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
@@ -300,10 +300,10 @@ static void copy_from_user_state(struct xfrm_state *x, struct xfrm_usersa_info *
*/
static void xfrm_update_ae_params(struct xfrm_state *x, struct rtattr **xfrma)
{
- 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;
@@ -342,25 +342,25 @@ 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;
@@ -917,7 +917,7 @@ static int verify_newpolicy_info(struct xfrm_userpolicy_info *p)
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)
@@ -985,7 +985,7 @@ static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family)
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;
@@ -1005,7 +1005,7 @@ static int copy_from_user_tmpl(struct xfrm_policy *pol, struct rtattr **xfrma)
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;
@@ -1294,7 +1294,7 @@ 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 = xfrma[XFRMA_SEC_CTX-1];
+ struct rtattr *rt = xfrma[XFRMA_SEC_CTX];
struct xfrm_policy tmp;
err = verify_sec_ctx_len(xfrma);
@@ -1455,8 +1455,8 @@ static int xfrm_new_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
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 rtattr *rp = xfrma[XFRMA_REPLAY_VAL];
+ struct rtattr *lt = xfrma[XFRMA_LTIME_VAL];
if (!lt && !rp)
return err;
@@ -1528,7 +1528,7 @@ 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 = xfrma[XFRMA_SEC_CTX-1];
+ struct rtattr *rt = xfrma[XFRMA_SEC_CTX];
struct xfrm_policy tmp;
err = verify_sec_ctx_len(xfrma);
@@ -1611,7 +1611,7 @@ static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh,
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_state *x = xfrm_state_alloc();
@@ -1663,7 +1663,7 @@ static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh,
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;
@@ -1700,7 +1700,7 @@ static int xfrm_do_migrate(struct sk_buff *skb, struct nlmsghdr *nlh,
int err;
int n = 0;
- if (xfrma[XFRMA_MIGRATE-1] == NULL)
+ if (xfrma[XFRMA_MIGRATE] == NULL)
return -EINVAL;
err = copy_from_user_policy_type(&type, (struct rtattr **)xfrma);
@@ -1906,9 +1906,7 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
return netlink_dump_start(xfrm_nl, skb, nlh, link->dump, NULL);
}
- /* FIXME: Temporary hack, nlmsg_parse() starts at xfrma[1], old code
- * expects first attribute at xfrma[0] */
- err = nlmsg_parse(nlh, xfrm_msg_min[type], xfrma-1, XFRMA_MAX,
+ err = nlmsg_parse(nlh, xfrm_msg_min[type], xfrma, XFRMA_MAX,
xfrma_policy);
if (err < 0)
return err;