vici: Make hardware offload configurable

src/libcharon/plugins/vici/vici_config.c

@@ -524,6 +524,7 @@ static void log_child_data(child_data_t *data, char *name)
 	DBG2(DBG_CFG, "   proposals = %#P", data->proposals);
 	DBG2(DBG_CFG, "   local_ts = %#R", data->local_ts);
 	DBG2(DBG_CFG, "   remote_ts = %#R", data->remote_ts);
+	DBG2(DBG_CFG, "   hw_offload = %u", cfg->options & OPT_HW_OFFLOAD);
 }
 
 /**
@@ -881,6 +882,15 @@ CALLBACK(parse_opt_ipcomp, bool,
 	return parse_option(out, OPT_IPCOMP, v);
 }
 
+/**
+ * Parse OPT_HW_OFFLOAD option
+ */
+CALLBACK(parse_opt_hw_offl, bool,
+	child_cfg_option_t *out, chunk_t v)
+{
+	return parse_option(out, OPT_HW_OFFLOAD, v);
+}
+
 /**
  * Parse an action_t
  */
@@ -1539,6 +1549,7 @@ CALLBACK(child_kv, bool,
 		{ "tfc_padding",		parse_tfc,			&child->cfg.tfc						},
 		{ "priority",			parse_uint32,		&child->cfg.priority				},
 		{ "interface",			parse_string,		&child->cfg.interface				},
+		{ "hw_offload",			parse_opt_hw_offl,	&child->cfg.options					},
 	};
 
 	return parse_rules(rules, countof(rules), name, value,

src/swanctl/swanctl.opt

@@ -888,6 +888,10 @@ connections.<conn>.children.<child>.replay_window = 32
 	default of 32 are supported using the Netlink backend only, a value of 0
 	disables IPsec replay protection.
 
+connections.<conn>.children.<child>.hw_offload = no
+	Enable hardware offload for this CHILD_SA, if supported by the IPsec
+	implementation.
+
 connections.<conn>.children.<child>.start_action = none
 	Action to perform after loading the configuration (_none_, _trap_, _start_).