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[IPSEC]: Make xfrm_lookup flags argument a bit-field

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This patch introduces an enum for bits in the flags argument of xfrm_lookup.
This is so that we can cram more information into it later.

Since all current users use just the values 0 and 1, XFRM_LOOKUP_WAIT has
been added with the value 1 << 0 to represent the current meaning of flags.

The test in __xfrm_lookup has been changed accordingly.

Signed-off-by: Herbert Xu <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Herbert Xu 2007-12-12 10:36:59 -08:00 • committed by David S. Miller
commit 815f4e57e9
2 changed files with 6 additions and 1 deletions
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2
net/xfrm/xfrm_policy.c
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@ -1565,7 +1565,7 @@ restart:
xfrm_pol_put(policy);
return -EREMOTE;
}
if (err == -EAGAIN && flags) {
if (err == -EAGAIN && (flags & XFRM_LOOKUP_WAIT)) {
DECLARE_WAITQUEUE(wait, current);
add_wait_queue(&km_waitq, &wait);