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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2005-10-05 12:15:12 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-10-05 12:15:12 -0700 |
| commit | 77d8d7a6848c81084f413e1ec4982123a56e2ccb (patch) | |
| tree | 37a160b0b5fcb8a079bcafec5091fd331e14d54c /net/key/af_key.c | |
| parent | 140e26fcd559f6988e5a9056385eecade19d9b49 (diff) | |
| download | lwn-77d8d7a6848c81084f413e1ec4982123a56e2ccb.tar.gz lwn-77d8d7a6848c81084f413e1ec4982123a56e2ccb.zip | |
[IPSEC]: Document that policy direction is derived from the index.
Here is a patch that adds a helper called xfrm_policy_id2dir to
document the fact that the policy direction can be and is derived
from the index.
This is based on a patch by YOSHIFUJI Hideaki and 210313105@suda.edu.cn.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/key/af_key.c')
| -rw-r--r-- | net/key/af_key.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/net/key/af_key.c b/net/key/af_key.c index 50d0a31c3ba6..bbf0f69181ba 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -2154,6 +2154,7 @@ out: static int pfkey_spdget(struct sock *sk, struct sk_buff *skb, struct sadb_msg *hdr, void **ext_hdrs) { + unsigned int dir; int err; struct sadb_x_policy *pol; struct xfrm_policy *xp; @@ -2162,7 +2163,11 @@ static int pfkey_spdget(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h if ((pol = ext_hdrs[SADB_X_EXT_POLICY-1]) == NULL) return -EINVAL; - xp = xfrm_policy_byid(0, pol->sadb_x_policy_id, + dir = xfrm_policy_id2dir(pol->sadb_x_policy_id); + if (dir >= XFRM_POLICY_MAX) + return -EINVAL; + + xp = xfrm_policy_byid(dir, pol->sadb_x_policy_id, hdr->sadb_msg_type == SADB_X_SPDDELETE2); if (xp == NULL) return -ENOENT; @@ -2174,9 +2179,9 @@ static int pfkey_spdget(struct sock *sk, struct sk_buff *skb, struct sadb_msg *h if (hdr->sadb_msg_type == SADB_X_SPDDELETE2) { c.data.byid = 1; c.event = XFRM_MSG_DELPOLICY; - km_policy_notify(xp, pol->sadb_x_policy_dir-1, &c); + km_policy_notify(xp, dir, &c); } else { - err = key_pol_get_resp(sk, xp, hdr, pol->sadb_x_policy_dir-1); + err = key_pol_get_resp(sk, xp, hdr, dir); } xfrm_pol_put(xp); |