| bpf.4 (56611) | bpf.4 (58192) |
|---|---|
| 1.\" Copyright (c) 1990 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that: (1) source code distributions 6.\" retain the above copyright notice and this paragraph in its entirety, (2) 7.\" distributions including binary code include the above copyright notice and 8.\" this paragraph in its entirety in the documentation or other materials --- 6 unchanged lines hidden (view full) --- 15.\" written permission. 16.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 17.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 18.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 19.\" 20.\" This document is derived in part from the enet man page (enet.4) 21.\" distributed with 4.3BSD Unix. 22.\" | 1.\" Copyright (c) 1990 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that: (1) source code distributions 6.\" retain the above copyright notice and this paragraph in its entirety, (2) 7.\" distributions including binary code include the above copyright notice and 8.\" this paragraph in its entirety in the documentation or other materials --- 6 unchanged lines hidden (view full) --- 15.\" written permission. 16.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 17.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 18.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 19.\" 20.\" This document is derived in part from the enet man page (enet.4) 21.\" distributed with 4.3BSD Unix. 22.\" |
| 23.\" $FreeBSD: head/share/man/man4/bpf.4 56611 2000-01-25 20:33:25Z archie $ | 23.\" $FreeBSD: head/share/man/man4/bpf.4 58192 2000-03-18 06:30:42Z rwatson $ |
| 24.\" 25.Dd January 16, 1996 26.Dt BPF 4 27.Os BSD 4.4 28.Sh NAME 29.Nm bpf 30.Nd Berkeley Packet Filter 31.Sh SYNOPSIS --- 253 unchanged lines hidden (view full) --- 285.Pq Li u_int 286Set or get the status of the 287.Dq header complete 288flag. 289Set to zero if the link level source address should be filled in automatically 290by the the interface output routine. Set to one if the link level source 291address will be written, as provided, to the wire. This flag is initialized 292to zero by default. | 24.\" 25.Dd January 16, 1996 26.Dt BPF 4 27.Os BSD 4.4 28.Sh NAME 29.Nm bpf 30.Nd Berkeley Packet Filter 31.Sh SYNOPSIS --- 253 unchanged lines hidden (view full) --- 285.Pq Li u_int 286Set or get the status of the 287.Dq header complete 288flag. 289Set to zero if the link level source address should be filled in automatically 290by the the interface output routine. Set to one if the link level source 291address will be written, as provided, to the wire. This flag is initialized 292to zero by default. |
| 293.It Dv BIOCSSEESENT 294.It Dv BIOCGSEESENT 295.Pq Li u_int 296Set or get the flag determining whether locally generated packets on the 297interface should be returned by BPF. Set to zero to see only incoming 298packets on the interface. Set to one to see packets originating 299locally and remotely on the interface. This flag is initialized to one by 300default. |
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| 293.Sh BPF HEADER 294The following structure is prepended to each packet returned by 295.Xr read 2 : 296.Bd -literal 297struct bpf_hdr { 298 struct timeval bh_tstamp; /* time stamp */ 299 u_long bh_caplen; /* length of captured portion */ 300 u_long bh_datalen; /* original length of packet */ --- 445 unchanged lines hidden --- | 301.Sh BPF HEADER 302The following structure is prepended to each packet returned by 303.Xr read 2 : 304.Bd -literal 305struct bpf_hdr { 306 struct timeval bh_tstamp; /* time stamp */ 307 u_long bh_caplen; /* length of captured portion */ 308 u_long bh_datalen; /* original length of packet */ --- 445 unchanged lines hidden --- |