tcpdump mailing list archives

BPF_MEMWORDS


From: George Bakos <gbakos () ists dartmouth edu>
Date: Wed, 6 Aug 2003 03:16:44 -0400

As DRAM is rather more abundant than in 1998, perhaps we can allocate a
bit more towards the scratch registers. In particular, this would open up
the limits on bpf expression length, reducing the need for multiple filter
files in cases that would otherwise throw a "too many registers needed"
error.

Any political, religious, or perhaps, cs reasons why the following is
unreasonable?

--- pcap-bpf.h  2003-08-06 03:08:51.000000000 -0400
+++ pcap-bpf.h.gb       2003-08-06 03:09:15.000000000 -0400
@@ -477,7 +477,7 @@
 /*
  * Number of scratch memory words (for BPF_LD|BPF_MEM and BPF_ST).
  */
-#define BPF_MEMWORDS 16
+#define BPF_MEMWORDS 64
 
 #ifdef __cplusplus
 }


-- 
George Bakos
Institute for Security Technology Studies - IRIA
Dartmouth College
gbakos () ists dartmouth edu
603.646.0665 -voice
603.646.0666 -fax
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