ref: 13996f7f38601ab82bfe16c7dec0e2d618fe11b1
parent: 373daa759c0548af932a49d1806eb6c937459e02
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Sun Sep 18 09:31:56 EDT 2022
tcpmssclamp: pass correct size tcpmssclamp() The len variable refers to the total length of a Block list in ipoputX(), but we need to pass the size of the buffer we pass instead, which can be less if there are multiple blocks.
--- a/sys/src/9/ip/ip.c
+++ b/sys/src/9/ip/ip.c
@@ -136,7 +136,7 @@
medialen = ifc->maxtu - ifc->m->hsize;
if(gating)
- tcpmssclamp((uchar*)eh, len, medialen);
+ tcpmssclamp(bp->rp, BLEN(bp), medialen);
else {eh->vihl = IP_VER4|IP_HLEN4;
eh->tos = tos;