shaper: add mtu option

Signed-off-by: Dmitry Kozlov <xeb@mail.ru>

3 files changed, 11 insertions, 4 deletions

diff --git a/accel-pppd/shaper/limiter.c b/accel-pppd/shaper/limiter.c
index 9f89ba74..af1e3baa 100644
--- a/accel-pppd/shaper/limiter.c
+++ b/accel-pppd/shaper/limiter.c
@@ -25,7 +25,6 @@ static int qdisc_tbf(struct qdisc_opt *qopt, struct nlmsghdr *n)
 {
 	struct tc_tbf_qopt opt;
 	__u32 rtab[256];
-	int mtu = 0;
 	int Rcell_log = -1;
 	unsigned int linklayer = LINKLAYER_ETHERNET; /* Assume ethernet */
 	struct rtattr *tail;
@@ -35,7 +34,7 @@ static int qdisc_tbf(struct qdisc_opt *qopt, struct nlmsghdr *n)
 	opt.rate.rate = qopt->rate;
 	opt.limit = (double)qopt->rate * qopt->latency + qopt->buffer;
 	opt.rate.mpu = conf_mpu;
-	if (tc_calc_rtable(&opt.rate, rtab, Rcell_log, mtu, linklayer) < 0) {
+	if (tc_calc_rtable(&opt.rate, rtab, Rcell_log, conf_mtu, linklayer) < 0) {
 		log_ppp_error("shaper: failed to calculate rate table.\n");
 		return -1;
 	}
@@ -73,7 +72,7 @@ static int qdisc_htb_class(struct qdisc_opt *qopt, struct nlmsghdr *n)
 	struct tc_htb_opt opt;
 	__u32 rtab[256],ctab[256];
 	int cell_log=-1,ccell_log = -1;
-	unsigned mtu = 1600;
+	unsigned mtu = conf_mtu ? conf_mtu : 1600;
 	unsigned int linklayer  = LINKLAYER_ETHERNET; /* Assume ethernet */
 	struct rtattr *tail;
 
@@ -190,7 +189,7 @@ static int install_police(struct rtnl_handle *rth, int ifindex, int rate, int bu
 	__u32 rtab[256];
 	struct rtattr *tail, *tail1, *tail2, *tail3;
 	int Rcell_log = -1;
-	int mtu = 0, flowid = 1;
+	int mtu = conf_mtu, flowid = 1;
 	unsigned int linklayer  = LINKLAYER_ETHERNET; /* Assume ethernet */
 
 	struct {
diff --git a/accel-pppd/shaper/shaper.c b/accel-pppd/shaper/shaper.c
index 7219d727..9594caf0 100644
--- a/accel-pppd/shaper/shaper.c
+++ b/accel-pppd/shaper/shaper.c
@@ -36,6 +36,7 @@ double conf_down_burst_factor = 0.1;
 double conf_up_burst_factor = 1;
 double conf_latency = 0.05;
 int conf_mpu = 0;
+int conf_mtu = 0;
 int conf_quantum = 1500;
 int conf_r2q = 10;
 int conf_cburst = 1534;
@@ -898,6 +899,12 @@ static void load_config(void)
 	if (opt && atoi(opt) >= 0)
 		conf_mpu = atoi(opt);
 
+	opt = conf_get_opt("shaper", "mtu");
+	if (opt)
+		conf_mtu = atoi(opt);
+	else
+		conf_mtu = 0;
+
 	opt = conf_get_opt("shaper", "r2q");
 	if (opt && atoi(opt) >= 0)
 		conf_r2q = atoi(opt);
diff --git a/accel-pppd/shaper/shaper.h b/accel-pppd/shaper/shaper.h
index 6322a6ba..4e6b9ff1 100644
--- a/accel-pppd/shaper/shaper.h
+++ b/accel-pppd/shaper/shaper.h
@@ -30,6 +30,7 @@ extern double conf_down_burst_factor;
 extern double conf_up_burst_factor;
 extern double conf_latency;
 extern int conf_mpu;
+extern int conf_mtu;
 extern int conf_quantum;
 extern int conf_r2q;
 extern int conf_cburst;