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netlink: add basic decoding of NETLINK_ROUTE ndmsg attributes

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* rtnl_neigh.c: Include "nlattr.h" and "xlat/rtnl_neigh_attrs.h".
(decode_ndmsg): Call decode_nlattr.
* xlat/rtnl_neigh_attrs.in: New file.

Co-authored-by: Fabien Siron <fabien.siron@epita.fr>
This commit is contained in:
JingPiao Chen 2017-08-15 12:41:14 +08:00 committed by Dmitry V. Levin
parent 848cbc422b
commit eede641dd2
2 changed files with 24 additions and 1 deletions
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13
rtnl_neigh.c
View File

@ -29,6 +29,7 @@
#include "defs.h"
#include "netlink_route.h"
#include "nlattr.h"
#include "print_fields.h"
#include "netlink.h"
@ -40,11 +41,13 @@
#include "xlat/nda_types.h"
#include "xlat/neighbor_cache_entry_flags.h"
#include "xlat/neighbor_cache_entry_states.h"
#include "xlat/rtnl_neigh_attrs.h"
DECL_NETLINK_ROUTE_DECODER(decode_ndmsg)
{
struct ndmsg ndmsg = { .ndm_family = family };
const size_t offset = sizeof(ndmsg.ndm_family);
size_t offset = sizeof(ndmsg.ndm_family);
bool decode_nla = false;
PRINT_FIELD_XVAL("{", ndmsg, ndm_family, addrfams, "AF_???");
@ -62,10 +65,18 @@ DECL_NETLINK_ROUTE_DECODER(decode_ndmsg)
"NTF_???");
PRINT_FIELD_XVAL(", ", ndmsg, ndm_type,
nda_types, "NDA_???");
decode_nla = true;
}
} else
tprints("...");
tprints("}");
offset = NLMSG_ALIGN(sizeof(ndmsg));
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
rtnl_neigh_attrs, "NDA_???", NULL, 0, NULL);
}
}
DECL_NETLINK_ROUTE_DECODER(decode_rtm_getneigh)

12
xlat/rtnl_neigh_attrs.in Normal file
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@ -0,0 +1,12 @@
NDA_UNSPEC 0
NDA_DST 1
NDA_LLADDR 2
NDA_CACHEINFO 3
NDA_PROBES 4
NDA_VLAN 5
NDA_PORT 6
NDA_VNI 7
NDA_IFINDEX 8
NDA_MASTER 9
NDA_LINK_NETNSID 10
NDA_SRC_VNI 11