l2tp: Add const qualifier for l2tp_packet_print()

Declare parameters and variables of l2tp_packet_print() as constant.
Also update l2tp_dict_find_value() prototype to accept options passed
by l2tp_packet_print().

Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>

1 files changed, 4 insertions, 2 deletions

diff --git a/accel-pppd/ctrl/l2tp/l2tp.h b/accel-pppd/ctrl/l2tp/l2tp.h
index 8a8cffd..d6aed68 100644
--- a/accel-pppd/ctrl/l2tp/l2tp.h
+++ b/accel-pppd/ctrl/l2tp/l2tp.h
@@ -70,11 +70,13 @@ extern int conf_avp_permissive;
 
 struct l2tp_dict_attr_t *l2tp_dict_find_attr_by_name(const char *name);
 struct l2tp_dict_attr_t *l2tp_dict_find_attr_by_id(int id);
-struct l2tp_dict_value_t *l2tp_dict_find_value(struct l2tp_dict_attr_t *attr, l2tp_value_t val);
+const struct l2tp_dict_value_t *l2tp_dict_find_value(const struct l2tp_dict_attr_t *attr,
+						     l2tp_value_t val);
 
 int l2tp_recv(int fd, struct l2tp_packet_t **, struct in_pktinfo *);
 void l2tp_packet_free(struct l2tp_packet_t *);
-void l2tp_packet_print(struct l2tp_packet_t *, void (*print)(const char *fmt, ...));
+void l2tp_packet_print(const struct l2tp_packet_t *,
+		       void (*print)(const char *fmt, ...));
 struct l2tp_packet_t *l2tp_packet_alloc(int ver, int msg_type, struct sockaddr_in *addr);
 int l2tp_packet_send(int sock, struct l2tp_packet_t *);
 int l2tp_packet_add_int16(struct l2tp_packet_t *pack, int id, int16_t val, int M);