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added MTU support (using MRU from the peer)

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This commit is contained in:
Sylvain Rochet 2012-06-05 23:10:38 +02:00
parent 2e227f868b
commit 6f21f48937
3 changed files with 19 additions and 31 deletions
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42
src/netif/ppp/ppp.c
View File

@ -1088,7 +1088,7 @@ static err_t ppp_netif_init_cb(struct netif *netif) {
netif->name[0] = 'p';
netif->name[1] = 'p';
netif->output = ppp_netif_output;
netif->mtu = ppp_mtu((int)(size_t)netif->state);
netif->mtu = netif_get_mtu((int)(size_t)netif->state);
netif->flags = NETIF_FLAG_POINTTOPOINT | NETIF_FLAG_LINK_UP;
#if LWIP_NETIF_HOSTNAME
/* @todo: Initialize interface hostname */
@ -1381,24 +1381,6 @@ static err_t ppp_netif_output_over_ethernet(int pd, struct pbuf *p) {
#endif /* PPPOE_SUPPORT */
/*
* Return the Maximum Transmission Unit for the given PPP connection.
*/
u_short ppp_mtu(int pd) {
ppp_control *pc = &ppp_control_list[pd];
u_short st;
/* Validate parameters. */
if (pd < 0 || pd >= NUM_PPP || !pc->open_flag) {
st = 0;
} else {
st = pc->mtu;
}
return st;
}
/* Get and set parameters for the given connection.
* Return 0 on success, an error code on failure. */
int
@ -1976,7 +1958,7 @@ int ppp_send_config(int unit, int mtu, u_int32_t accm, int pcomp, int accomp) {
int i;
#endif /* PPPOS_SUPPORT */
pc->mtu = mtu;
/* pc->mtu = mtu; -- set correctly with netif_set_mtu */
pc->pcomp = pcomp;
pc->accomp = accomp;
@ -2190,14 +2172,26 @@ int sifnpmode(int u, int proto, enum NPmode mode) {
* netif_set_mtu - set the MTU on the PPP network interface.
*/
void netif_set_mtu(int unit, int mtu) {
/* FIXME: set lwIP MTU */
ppp_control *pc = &ppp_control_list[unit];
/* Validate parameters. */
if (unit < 0 || unit >= NUM_PPP || !pc->open_flag)
return;
pc->mtu = mtu;
}
/*
* netif_get_mtu - get PPP interface MTU
*/
int netif_get_mtu(int mtu) {
/* FIXME: get lwIP MTU */
return 1492;
int netif_get_mtu(int unit) {
ppp_control *pc = &ppp_control_list[unit];
/* Validate parameters. */
if (unit < 0 || unit >= NUM_PPP || !pc->open_flag)
return 0;
return pc->mtu;
}
/********************************************************************

6
src/netif/ppp/ppp.h
View File

@ -176,12 +176,6 @@ void ppp_sighup(int pd);
*/
int ppp_ioctl(int pd, int cmd, void *arg);
/*
* Return the Maximum Transmission Unit for the given PPP connection.
*/
/* FIXME: demystify MTU support */
u_short ppp_mtu(int pd);
#if PPPOS_SUPPORT && !PPP_INPROC_OWNTHREAD
/*
* PPP over Serial: this is the input function to be called for received data.

2
src/netif/ppp/ppp_impl.h
View File

@ -493,7 +493,7 @@ int sifdown (int u);
int sifnpmode(int u, int proto, enum NPmode mode);
void netif_set_mtu(int unit, int mtu);
int netif_get_mtu(int mtu);
int netif_get_mtu(int unit);
int sifdefaultroute (int unit, u_int32_t ouraddr, u_int32_t gateway, bool replace);
int cifdefaultroute (int unit, u_int32_t ouraddr, u_int32_t gateway);