diff options
Diffstat (limited to 'package/network/services/ppp/patches/207-lcp_mtu_max.patch')
| -rw-r--r-- | package/network/services/ppp/patches/207-lcp_mtu_max.patch | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/package/network/services/ppp/patches/207-lcp_mtu_max.patch b/package/network/services/ppp/patches/207-lcp_mtu_max.patch new file mode 100644 index 0000000..240701b --- /dev/null +++ b/package/network/services/ppp/patches/207-lcp_mtu_max.patch @@ -0,0 +1,25 @@ +pppd: Cap MTU to the user configured value + +This patchs caps the calculated MTU value in lcp.c to the user specified "mru" +option value. Without this patch pppd would advertise a different MTU value +compared to what is set on the local interface in some cases. + +Signed-off-by: Jo-Philipp Wich <jow@openwrt.org> + +--- a/pppd/lcp.c ++++ b/pppd/lcp.c +@@ -1917,12 +1917,12 @@ lcp_up(f) + * the interface MTU is set to the lowest of that, the + * MTU we want to use, and our link MRU. + */ +- mtu = ho->neg_mru? ho->mru: PPP_MRU; ++ mtu = MIN(ho->neg_mru? ho->mru: PPP_MRU, ao->mru); + mru = go->neg_mru? MAX(wo->mru, go->mru): PPP_MRU; + #ifdef HAVE_MULTILINK + if (!(multilink && go->neg_mrru && ho->neg_mrru)) + #endif /* HAVE_MULTILINK */ +- netif_set_mtu(f->unit, MIN(MIN(mtu, mru), ao->mru)); ++ netif_set_mtu(f->unit, MIN(mtu, mru)); + ppp_send_config(f->unit, mtu, + (ho->neg_asyncmap? ho->asyncmap: 0xffffffff), + ho->neg_pcompression, ho->neg_accompression); |