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author | Xin LI <delphij@FreeBSD.org> | 2013-05-30 20:51:22 +0000 |
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committer | Xin LI <delphij@FreeBSD.org> | 2013-05-30 20:51:22 +0000 |
commit | d03c0883ad6dcda67e9281df01f1940292dee669 (patch) | |
tree | f1ffd0911b49d93d246ae1677dd73d297cd2d92d /contrib/tcpdump/print-otv.c | |
parent | 7560005c4159f2ab5b497c5455a1e542400def4f (diff) | |
parent | f3d019c7d20f9d0c07d397064fa7cef7711b2455 (diff) | |
download | src-d03c0883ad6dcda67e9281df01f1940292dee669.tar.gz src-d03c0883ad6dcda67e9281df01f1940292dee669.zip |
MFV: tcpdump 4.4.0.
MFC after: 4 weeks
Notes
Notes:
svn path=/head/; revision=251158
Diffstat (limited to 'contrib/tcpdump/print-otv.c')
-rw-r--r-- | contrib/tcpdump/print-otv.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/contrib/tcpdump/print-otv.c b/contrib/tcpdump/print-otv.c new file mode 100644 index 000000000000..cd5395742129 --- /dev/null +++ b/contrib/tcpdump/print-otv.c @@ -0,0 +1,79 @@ +/* + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that: (1) source code + * distributions retain the above copyright notice and this paragraph + * in its entirety, and (2) distributions including binary code include + * the above copyright notice and this paragraph in its entirety in + * the documentation or other materials provided with the distribution. + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND + * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT + * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE. + * + * Original code by Francesco Fondelli (francesco dot fondelli, gmail dot com) + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <tcpdump-stdinc.h> + +#include <stdio.h> +#include <stdlib.h> + +#include "interface.h" +#include "extract.h" +#include "addrtoname.h" + +#include "udp.h" + +/* + * OTV header, draft-hasmit-otv-04 + * + * 0 1 2 3 + * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * |R|R|R|R|I|R|R|R| Overlay ID | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + * | Instance ID | Reserved | + * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + */ + +void +otv_print(const u_char *bp, u_int len) +{ + u_int8_t flags; + u_int32_t overlay_id; + u_int32_t instance_id; + + if (len < 8) { + printf("[|OTV]"); + return; + } + + flags = *bp; + bp += 1; + + overlay_id = EXTRACT_24BITS(bp); + bp += 3; + + instance_id = EXTRACT_24BITS(bp); + bp += 4; + + printf("OTV, "); + + fputs("flags [", stdout); + if (flags & 0x08) + fputs("I", stdout); + else + fputs(".", stdout); + fputs("] ", stdout); + + printf("(0x%02x), ", flags); + printf("overlay %u, ", overlay_id); + printf("instance %u\n", instance_id); + + ether_print(gndo, bp, len - 8, len - 8, NULL, NULL); + return; +} |