7207b88d0
Eric Andersen
2003-07-05
Subject
Patch from Lars Kellogg-Stedman:
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networking/ipcalc.c+14 -7
| @@ -22,15 +22,22 @@ | |
| #define IPCALC_MSG(CMD,ALTCMD) if (mode & SILENT) {ALTCMD;} else {CMD;} | |
| + | #define CLASS_A_NETMASK ntohl(0xFF000000) |
| + | #define CLASS_B_NETMASK ntohl(0xFFFF0000) |
| + | #define CLASS_C_NETMASK ntohl(0xFFFFFF00) |
| + | |
| static unsigned long get_netmask(unsigned long ipaddr) | |
| { | |
| - | if (ipaddr & 0xC0) { |
| - | return 0x00FFFFFF; /* Class C */ |
| - | } |
| - | if (ipaddr & 0x10) { |
| - | return 0x0000FFFF; /* Class B */ |
| - | } |
| - | return 0x000000FF; /* Class A */ |
| + | ipaddr = htonl(ipaddr); |
| + | |
| + | if ((ipaddr & 0xC0000000) == 0xC0000000) |
| + | return CLASS_C_NETMASK; |
| + | else if ((ipaddr & 0x80000000) == 0x80000000) |
| + | return CLASS_B_NETMASK; |
| + | else if ((ipaddr & 0x80000000) == 0) |
| + | return CLASS_A_NETMASK; |
| + | else |
| + | return 0; |
| } | |
| #define NETMASK 0x01 | |