diff options
Diffstat (limited to 'contrib/libpcap/pcap-int.h')
| -rw-r--r-- | contrib/libpcap/pcap-int.h | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/contrib/libpcap/pcap-int.h b/contrib/libpcap/pcap-int.h index fbab8e9..aad7369 100644 --- a/contrib/libpcap/pcap-int.h +++ b/contrib/libpcap/pcap-int.h @@ -167,12 +167,36 @@ struct pcap { struct pcap_md md; /* - * Read buffer. + * Read buffer -- for file descriptor read buffer model. */ int bufsize; u_char *buffer; u_char *bp; int cc; + int to_ms; + + /* + * Zero-copy read buffer -- for zero-copy BPF. 'buffer' above will + * alternative between these two actual mmap'd buffers as required. + * As there is a header on the front size of the mmap'd buffer, only + * some of the buffer is exposed to libpcap as a whole via bufsize; + * zbufsize is the true size. zbuffer tracks the current zbuf + * assocated with buffer so that it can be used to decide which the + * next buffer to read will be. + */ + u_char *zbuf1, *zbuf2, *zbuffer; + u_int zbufsize; + u_int timeout; + u_int zerocopy; + u_int interrupted; + struct timespec firstsel; + + /* + * If there's currently a buffer being actively processed, then it is + * referenced here; 'buffer' is also pointed at it, but offset by the + * size of the header. + */ + struct bpf_zbuf_header *bzh; /* * Place holder for pcap_next(). |
