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| author | Francis Dupont <fdupont@isc.org> | 2017-12-23 01:18:23 +0100 |
|---|---|---|
| committer | Francis Dupont <fdupont@isc.org> | 2017-12-23 01:18:23 +0100 |
| commit | 563f0b8aef9558a900f215dfccc571eab99a0223 (patch) | |
| tree | 4d5ce8719fe415d089569f5f98ca84c944a42aaf /common/lpf.c | |
| parent | 0d6d300fec8b26c9e854095a4a29158186b69172 (diff) | |
| download | isc-dhcp-563f0b8aef9558a900f215dfccc571eab99a0223.tar.gz | |
Merged rt44535 (relay port)
Diffstat (limited to 'common/lpf.c')
| -rw-r--r-- | common/lpf.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/common/lpf.c b/common/lpf.c index 6e6ba014..82a279bb 100644 --- a/common/lpf.c +++ b/common/lpf.c @@ -177,6 +177,11 @@ void if_deregister_send (info) extern struct sock_filter dhcp_bpf_filter []; extern int dhcp_bpf_filter_len; +#if defined(RELAY_PORT) +extern struct sock_filter dhcp_bpf_relay_filter []; +extern int dhcp_bpf_relay_filter_len; +#endif + #if defined (HAVE_TR_SUPPORT) extern struct sock_filter dhcp_bpf_tr_filter []; extern int dhcp_bpf_tr_filter_len; @@ -256,7 +261,19 @@ static void lpf_gen_filter_setup (info) /* Patch the server port into the LPF program... XXX changes to filter program may require changes to the insn number(s) used below! XXX */ - dhcp_bpf_filter [8].k = ntohs ((short)local_port); +#if defined(RELAY_PORT) + if (relay_port) { + /* + * If user defined relay UDP port, we need to filter + * also on the user UDP port. + */ + p.len = dhcp_bpf_relay_filter_len; + p.filter = dhcp_bpf_relay_filter; + + dhcp_bpf_relay_filter [10].k = ntohs (relay_port); + } +#endif + dhcp_bpf_filter [8].k = ntohs (local_port); if (setsockopt (info -> rfdesc, SOL_SOCKET, SO_ATTACH_FILTER, &p, sizeof p) < 0) { |