diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/xfrm/xfrm_user.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index 24a97b1179f..30e47c678d5 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -33,6 +33,11 @@ #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]; @@ -232,7 +237,6 @@ static int attach_one_algo(struct xfrm_algo **algpp, u8 *props, struct rtattr *rta = u_arg; struct xfrm_algo *p, *ualg; struct xfrm_algo_desc *algo; - int len; if (!rta) return 0; @@ -244,8 +248,7 @@ static int attach_one_algo(struct xfrm_algo **algpp, u8 *props, 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; @@ -617,11 +620,9 @@ static int dump_one_state(struct xfrm_state *x, int count, void *ptr) copy_to_user_state(x, p); if (x->aalg) - NLA_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) - NLA_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) NLA_PUT(skb, XFRMA_ALG_COMP, sizeof(*(x->calg)), x->calg); @@ -2072,9 +2073,9 @@ static inline int xfrm_sa_len(struct xfrm_state *x) { int l = 0; if (x->aalg) - l += RTA_SPACE(sizeof(*x->aalg) + (x->aalg->alg_key_len+7)/8); + l += RTA_SPACE(alg_len(x->aalg)); if (x->ealg) - l += RTA_SPACE(sizeof(*x->ealg) + (x->ealg->alg_key_len+7)/8); + l += RTA_SPACE(alg_len(x->ealg)); if (x->calg) l += RTA_SPACE(sizeof(*x->calg)); if (x->encap) @@ -2127,11 +2128,9 @@ static int xfrm_notify_sa(struct xfrm_state *x, struct km_event *c) copy_to_user_state(x, p); if (x->aalg) - NLA_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) - NLA_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) NLA_PUT(skb, XFRMA_ALG_COMP, sizeof(*(x->calg)), x->calg); |