diff options
Diffstat (limited to 'net/xfrm/xfrm_user.c')
| -rw-r--r-- | net/xfrm/xfrm_user.c | 47 |
1 files changed, 43 insertions, 4 deletions
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index ffe1b217347c..5ce8558eac91 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -1168,7 +1168,7 @@ nlmsg_failure: static int inline xfrm_sa_len(struct xfrm_state *x) { - int l = NLMSG_LENGTH(sizeof(struct xfrm_usersa_info)); + int l = 0; if (x->aalg) l += RTA_SPACE(sizeof(*x->aalg) + (x->aalg->alg_key_len+7)/8); if (x->ealg) @@ -1184,20 +1184,39 @@ static int inline xfrm_sa_len(struct xfrm_state *x) static int xfrm_notify_sa(struct xfrm_state *x, struct km_event *c) { struct xfrm_usersa_info *p; + struct xfrm_usersa_id *id; struct nlmsghdr *nlh; struct sk_buff *skb; unsigned char *b; int len = xfrm_sa_len(x); + int headlen; + + headlen = sizeof(*p); + if (c->event == XFRM_MSG_DELSA) { + len += RTA_SPACE(headlen); + headlen = sizeof(*id); + } + len += NLMSG_SPACE(headlen); skb = alloc_skb(len, GFP_ATOMIC); if (skb == NULL) return -ENOMEM; b = skb->tail; - nlh = NLMSG_PUT(skb, c->pid, c->seq, c->event, sizeof(*p)); + nlh = NLMSG_PUT(skb, c->pid, c->seq, c->event, headlen); nlh->nlmsg_flags = 0; p = NLMSG_DATA(nlh); + if (c->event == XFRM_MSG_DELSA) { + 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))); + } + copy_to_user_state(x, p); if (x->aalg) @@ -1398,20 +1417,39 @@ static int xfrm_exp_policy_notify(struct xfrm_policy *xp, int dir, struct km_eve static int xfrm_notify_policy(struct xfrm_policy *xp, int dir, struct km_event *c) { struct xfrm_userpolicy_info *p; + struct xfrm_userpolicy_id *id; struct nlmsghdr *nlh; struct sk_buff *skb; unsigned char *b; int len = RTA_SPACE(sizeof(struct xfrm_user_tmpl) * xp->xfrm_nr); - len += NLMSG_SPACE(sizeof(struct xfrm_userpolicy_info)); + int headlen; + + headlen = sizeof(*p); + if (c->event == XFRM_MSG_DELPOLICY) { + len += RTA_SPACE(headlen); + headlen = sizeof(*id); + } + len += NLMSG_SPACE(headlen); skb = alloc_skb(len, GFP_ATOMIC); if (skb == NULL) return -ENOMEM; b = skb->tail; - nlh = NLMSG_PUT(skb, c->pid, c->seq, c->event, sizeof(*p)); + nlh = NLMSG_PUT(skb, c->pid, c->seq, c->event, headlen); p = NLMSG_DATA(nlh); + if (c->event == XFRM_MSG_DELPOLICY) { + id = NLMSG_DATA(nlh); + memset(id, 0, sizeof(*id)); + id->dir = dir; + if (c->data.byid) + id->index = xp->index; + else + memcpy(&id->sel, &xp->selector, sizeof(id->sel)); + + p = RTA_DATA(__RTA_PUT(skb, XFRMA_POLICY, sizeof(*p))); + } nlh->nlmsg_flags = 0; @@ -1424,6 +1462,7 @@ static int xfrm_notify_policy(struct xfrm_policy *xp, int dir, struct km_event * return netlink_broadcast(xfrm_nl, skb, 0, XFRMGRP_POLICY, GFP_ATOMIC); nlmsg_failure: +rtattr_failure: kfree_skb(skb); return -1; } |