diff options
| author | phk <phk@FreeBSD.org> | 2000-01-15 19:46:12 +0000 |
|---|---|---|
| committer | phk <phk@FreeBSD.org> | 2000-01-15 19:46:12 +0000 |
| commit | d462c28c31df9f3914c6ca7a927dd720a96662e6 (patch) | |
| tree | e582bf4525019087e6d3c7443980365ddb9ad9a5 /sys/net/bpf.h | |
| parent | 573e577b6fdd9128ba293a8bd68b8648fd0bf704 (diff) | |
| download | FreeBSD-src-d462c28c31df9f3914c6ca7a927dd720a96662e6.zip FreeBSD-src-d462c28c31df9f3914c6ca7a927dd720a96662e6.tar.gz | |
|The hard limit for the BPF buffer size is 32KB, which appears too low
|for high speed networks (even at 100Mbit/s this corresponds to 1/300th
|of a second). The default buffer size is 4KB, but libpcap and ipfilter
|both override this (using the BIOCSBLEN ioctl) and allocate 32KB.
|
|The following patch adds an sysctl for bpf_maxbufsize, similar to the
|one for bpf_bufsize that you added back in December 1995. I choose to
|make the default for this limit 512KB (the value suggested by NFR).
Submitted by: se
Reviewed by: phk
Diffstat (limited to 'sys/net/bpf.h')
| -rw-r--r-- | sys/net/bpf.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/net/bpf.h b/sys/net/bpf.h index 9b04c82..a684314 100644 --- a/sys/net/bpf.h +++ b/sys/net/bpf.h @@ -58,7 +58,7 @@ typedef u_int32_t bpf_u_int32; #define BPF_WORDALIGN(x) (((x)+(BPF_ALIGNMENT-1))&~(BPF_ALIGNMENT-1)) #define BPF_MAXINSNS 512 -#define BPF_MAXBUFSIZE 0x8000 +#define BPF_MAXBUFSIZE 0x80000 #define BPF_MINBUFSIZE 32 /* |
