projects / OpenSPARC-T2-DV / blame
| Commit | Line | Data |
|---|---|---|
| 86530b38 AT |
1 | #if (HAVE_CONFIG_H) |
| 2 | #include "../include/config.h" | |
| 3 | #endif | |
| 4 | #if (!(_WIN32) || (__CYGWIN__)) | |
| 5 | #include "../include/libnet.h" | |
| 6 | #else | |
| 7 | #include "../include/win32/libnet.h" | |
| 8 | #endif | |
| 9 | ||
| 10 | libnet_ptag_t | |
| 11 | libnet_build_pim(u_int8_t vers, u_int8_t type, u_int16_t chksum, | |
| 12 | u_int8_t *payload, u_int32_t payload_s, libnet_t *l, | |
| 13 | libnet_ptag_t ptag) | |
| 14 | { | |
| 15 | u_int32_t n, h; | |
| 16 | libnet_pblock_t *p; | |
| 17 | struct libnet_pim_hdr pim_hdr; | |
| 18 | ||
| 19 | if (l == NULL) | |
| 20 | { | |
| 21 | return (-1); | |
| 22 | } | |
| 23 | ||
| 24 | n = LIBNET_PIM_H + payload_s; | |
| 25 | h = LIBNET_PIM_H; | |
| 26 | ||
| 27 | /* | |
| 28 | * Find the existing protocol block if a ptag is specified, or create | |
| 29 | * a new one. | |
| 30 | */ | |
| 31 | p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_PIM_H); | |
| 32 | if (p == NULL) | |
| 33 | { | |
| 34 | return (-1); | |
| 35 | } | |
| 36 | ||
| 37 | memset(&pim_hdr, 0, sizeof(pim_hdr)); | |
| 38 | pim_hdr.pim_ver_type = (vers << 4) | (type & 0x0f); /* version and type */ | |
| 39 | pim_hdr.pim_sum = (chksum ? htons(chksum) : 0); /* checksum */ | |
| 40 | ||
| 41 | n = libnet_pblock_append(l, p, (u_int8_t *)&pim_hdr, LIBNET_PIM_H); | |
| 42 | if (n == -1) | |
| 43 | { | |
| 44 | goto bad; | |
| 45 | } | |
| 46 | ||
| 47 | if ((payload && !payload_s) || (!payload && payload_s)) | |
| 48 | { | |
| 49 | snprintf(l->err_buf, LIBNET_ERRBUF_SIZE, | |
| 50 | "%s(): payload inconsistency\n", __func__); | |
| 51 | goto bad; | |
| 52 | } | |
| 53 | ||
| 54 | if (payload && payload_s) | |
| 55 | { | |
| 56 | n = libnet_pblock_append(l, p, payload, payload_s); | |
| 57 | if (n == -1) | |
| 58 | { | |
| 59 | goto bad; | |
| 60 | } | |
| 61 | } | |
| 62 | if (chksum == 0) | |
| 63 | { | |
| 64 | /* | |
| 65 | * If checksum is zero, by default libnet will compute a checksum | |
| 66 | * for the user. The programmer can override this by calling | |
| 67 | * libnet_toggle_checksum(l, ptag, 1); | |
| 68 | */ | |
| 69 | libnet_pblock_setflags(p, LIBNET_PBLOCK_DO_CHECKSUM); | |
| 70 | } | |
| 71 | ||
| 72 | ||
| 73 | return (ptag ? ptag : libnet_pblock_update(l, p, h, LIBNET_PBLOCK_PIM_H)); | |
| 74 | bad: | |
| 75 | libnet_pblock_delete(l, p); | |
| 76 | return (-1); | |
| 77 | } | |
| 78 | ||
| 79 | /* EOF */ |