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authorPhil Sutter <phil@nwl.cc>2022-03-15 11:58:37 +0100
committerPhil Sutter <phil@nwl.cc>2022-11-24 10:24:06 +0100
commit208290ff0bfecb49044c3df87149aa6fa683de09 (patch)
tree25f0586d8514d57a55de30b8c9ae2d364b5b740c /extensions/libxt_ipcomp.c
parent8a714a4f4173d6e3d32ff414fac837bc0fd6b99c (diff)
extensions: ipcomp: Add comment to clarify xlate callback
Kernel ignores 'hdrres' field, this matching on reserved field value was never effective. While being at it, drop its description from man page. Continue to parse and print it for compatibility reasons, but avoid attracting new users. Signed-off-by: Phil Sutter <phil@nwl.cc>
Diffstat (limited to 'extensions/libxt_ipcomp.c')
-rw-r--r--extensions/libxt_ipcomp.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/extensions/libxt_ipcomp.c b/extensions/libxt_ipcomp.c
index b5c43128..4171c4a1 100644
--- a/extensions/libxt_ipcomp.c
+++ b/extensions/libxt_ipcomp.c
@@ -101,6 +101,8 @@ static int comp_xlate(struct xt_xlate *xl,
const struct xt_ipcomp *compinfo =
(struct xt_ipcomp *)params->match->data;
+ /* ignore compinfo->hdrres like kernel's xt_ipcomp.c does */
+
xt_xlate_add(xl, "comp cpi %s",
compinfo->invflags & XT_IPCOMP_INV_SPI ? "!= " : "");
if (compinfo->spis[0] != compinfo->spis[1])