From fab448991df4ecca6c244e23982c70f7e715b864 Mon Sep 17 00:00:00 2001 From: Thomas Graf Date: Wed, 22 Aug 2007 13:59:43 -0700 Subject: [PATCH] [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 Signed-off-by: David S. Miller --- net/xfrm/xfrm_user.c | 80 +++++++++++++++++++++----------------------- 1 file changed, 39 insertions(+), 41 deletions(-) diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index 1371a0ae06..8c323b187e 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; -- 2.39.5