[XFRM]: Introduce XFRM_MSG_REPORT.

[pandora-kernel.git] / net / xfrm / xfrm_user.c

diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 770bd24..7303b82 100644 (file)
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -1491,6 +1491,7 @@ static const int xfrm_msg_min[XFRM_NR_MSGTYPES] = {
        [XFRM_MSG_FLUSHPOLICY - XFRM_MSG_BASE] = NLMSG_LENGTH(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),
 };
 
 #undef XMSGSIZE
@@ -2058,12 +2059,57 @@ static int xfrm_send_policy_notify(struct xfrm_policy *xp, int dir, struct km_ev
 
 }
 
+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;
+
+       nlh = NLMSG_PUT(skb, 0, 0, XFRM_MSG_REPORT, sizeof(*ur));
+       ur = NLMSG_DATA(nlh);
+       nlh->nlmsg_flags = 0;
+
+       ur->proto = proto;
+       memcpy(&ur->sel, sel, sizeof(ur->sel));
+
+       if (addr)
+               RTA_PUT(skb, XFRMA_COADDR, sizeof(*addr), addr);
+
+       nlh->nlmsg_len = skb->tail - b;
+       return skb->len;
+
+nlmsg_failure:
+rtattr_failure:
+       skb_trim(skb, b - skb->data);
+       return -1;
+}
+
+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);
+       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);
+}
+
 static struct xfrm_mgr netlink_mgr = {
        .id             = "netlink",
        .notify         = xfrm_send_state_notify,
        .acquire        = xfrm_send_acquire,
        .compile_policy = xfrm_compile_policy,
        .notify_policy  = xfrm_send_policy_notify,
+       .report         = xfrm_send_report,
 };
 
 static int __init xfrm_user_init(void)