Re: how to manage ARP entries via ioctl(2) ?
This is a discussion on Re: how to manage ARP entries via ioctl(2) ? within the lucky.openbsd.tech forums, part of the OpenBSD category; --> On Thu, Aug 25, 2005 at 04:43:02PM +0300, oleyniko@jct.ac.il wrote: > how do i manage ARP entries via ioctl(2) ...
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02-22-2008, 12:45 PM
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 Re: how to manage ARP entries via ioctl(2) ? On Thu, Aug 25, 2005 at 04:43:02PM +0300, oleyniko@jct.ac.il wrote: > how do i manage ARP entries via ioctl(2) in OpenBSD ? > i have the folowing code that works in linux : > ------start------------ > __int32_t func(__int32_t ip){ > #if defined(__OpenBSD__)|| defined(__NetBSD__) > sockfd= socket(AF_INET,SOCK_DGRAM,0); > #endif > #if defined(__linux__) > sockfd = socket(PF_INET,SOCK_DGRAM,0); > #endif > <... check return value ...> > > addr = (struct sockaddr_in*)&arp_req.arp_pa; > bzero((void*)addr,sizeof(struct sockaddr_in)); > > #if defined (__OpenBSD__)||defined(__NetBSD__) > addr->sin_family = AF_INET; > #endif > #if defined (__linux__) > addr->sin_family = PF_INET; > #endif > > addr->sin_addr.s_addr = ip; > ret_val = ioctl(sockfd, SIOCDARP,&arp_req); > <... check return value ...> > close(sockdf); > return 0; > } > ----end-------------- > > however i cannot even compile it under OpenBSD . the message i'm getting is > : > SIOCDARP : undaclared . > > i've looked at OpenBSD's arp.c and have not found and call ioctl(2) . > > can anybody explain me how ARP entries are managed in OpenBSD's arp.c ? > Via the routing socket: s = socket(PF_ROUTE, SOCK_RAW, 0); Using ioctl() for routing changes is archaic and dead since the BSD 4.4 times. -- :wq Claudio      |
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