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pppoe: use the interface mtu as upper limit for ppp packet size + header (based on a patch by Dirk Nehring)

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git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@5009 3c298f89-4303-0410-b956-a3cf2f4a3e73
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nbd
2006-10-10 12:28:30 +00:00
parent 524925e2bd
commit 56a341a5b9
2 changed files with 24 additions and 0 deletions
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12
target/linux/generic-2.4/patches/229-pppoe_mtu_fix.patch Normal file
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@@ -0,0 +1,12 @@
--- linux-2.4.30/drivers/net/pppoe.c.old 2006-10-10 13:49:12.000000000 +0200
+++ linux-2.4.30/drivers/net/pppoe.c 2006-10-10 13:50:02.000000000 +0200
@@ -639,6 +639,9 @@
po->chan.hdrlen = (sizeof(struct pppoe_hdr) +
dev->hard_header_len);
+ if (po->chan.mtu > dev->mtu - sizeof(struct pppoe_hdr))
+ po->chan.mtu = dev->mtu - sizeof(struct pppoe_hdr);
+
po->chan.private = sk;
po->chan.ops = &pppoe_chan_ops;