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netlink: add snl(3) support for dumping nexthops and neighbors

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MFC after:	2 weeks
This commit is contained in:
Alexander V. Chernikov 2023-04-25 11:14:12 +00:00
parent b32cf15d86
commit 5af9ad5359
1 changed files with 56 additions and 2 deletions
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58
sys/netlink/netlink_snl_route_parsers.h
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@ -29,6 +29,7 @@
#include <netlink/netlink_snl.h>
#include <netlink/netlink_snl_route.h>
#include <netlink/route/nexthop.h>
/* TODO: this file should be generated automatically */
@ -224,21 +225,31 @@ struct snl_parsed_neigh {
uint8_t ndm_flags;
uint16_t ndm_state;
uint32_t nda_ifindex;
uint32_t nda_probes;
uint32_t ndaf_next_ts;
struct sockaddr *nda_dst;
struct nlattr *nda_lladdr;
};
#define _IN(_field) offsetof(struct ndmsg, _field)
#define _OUT(_field) offsetof(struct snl_parsed_neigh, _field)
static const struct snl_attr_parser _nla_p_neigh_fbsd[] = {
{ .type = NDAF_NEXT_STATE_TS, .off = _OUT(ndaf_next_ts), .cb = snl_attr_get_uint32 },
};
SNL_DECLARE_ATTR_PARSER(_neigh_fbsd_parser, _nla_p_neigh_fbsd);
static struct snl_attr_parser _nla_p_neigh_s[] = {
{ .type = NDA_DST, .off = _OUT(nda_dst), .cb = snl_attr_get_ip },
{ .type = NDA_LLADDR , .off = _OUT(nda_lladdr), .cb = snl_attr_get_nla },
{ .type = NDA_PROBES, .off = _OUT(nda_probes), .cb = snl_attr_get_uint32 },
{ .type = NDA_IFINDEX, .off = _OUT(nda_ifindex), .cb = snl_attr_get_uint32 },
{ .type = NDA_FREEBSD, .arg = &_neigh_fbsd_parser, .cb = snl_attr_get_nested },
};
static struct snl_field_parser _fp_p_neigh_s[] = {
{.off_in = _IN(ndm_family), .off_out = _OUT(ndm_family), .cb = snl_field_get_uint8 },
{.off_in = _IN(ndm_flags), .off_out = _OUT(ndm_flags), .cb = snl_field_get_uint8 },
{.off_in = _IN(ndm_state), .off_out = _OUT(ndm_state), .cb = snl_field_get_uint16 },
{.off_in = _IN(ndm_ifindex), .off_out = _OUT(nda_ifindex), .cb = snl_field_get_uint32 },
};
#undef _IN
#undef _OUT
@ -271,10 +282,53 @@ static struct snl_field_parser _fp_p_addr_s[] = {
#undef _OUT
SNL_DECLARE_PARSER(snl_rtm_addr_parser, struct ifaddrmsg, _fp_p_addr_s, _nla_p_addr_s);
struct snl_parsed_nhop {
uint32_t nha_id;
uint8_t nha_blackhole;
uint8_t nha_groups;
uint8_t nhaf_knhops;
uint8_t nhaf_family;
uint32_t nha_oif;
struct sockaddr *nha_gw;
uint8_t nh_family;
uint8_t nh_protocol;
uint32_t nhaf_table;
uint32_t nhaf_kid;
uint32_t nhaf_aif;
};
#define _IN(_field) offsetof(struct nhmsg, _field)
#define _OUT(_field) offsetof(struct snl_parsed_nhop, _field)
static struct snl_attr_parser _nla_p_nh_fbsd[] = {
{ .type = NHAF_KNHOPS, .off = _OUT(nhaf_knhops), .cb = snl_attr_get_flag },
{ .type = NHAF_TABLE, .off = _OUT(nhaf_table), .cb = snl_attr_get_uint32 },
{ .type = NHAF_KID, .off = _OUT(nhaf_kid), .cb = snl_attr_get_uint32 },
{ .type = NHAF_AIF, .off = _OUT(nhaf_aif), .cb = snl_attr_get_uint32 },
};
SNL_DECLARE_ATTR_PARSER(_nh_fbsd_parser, _nla_p_nh_fbsd);
static const struct snl_field_parser _fp_p_nh[] = {
{ .off_in = _IN(nh_family), .off_out = _OUT(nh_family), .cb = snl_field_get_uint8 },
{ .off_in = _IN(nh_protocol), .off_out = _OUT(nh_protocol), .cb = snl_field_get_uint8 },
};
static const struct snl_attr_parser _nla_p_nh[] = {
{ .type = NHA_ID, .off = _OUT(nha_id), .cb = snl_attr_get_uint32 },
{ .type = NHA_BLACKHOLE, .off = _OUT(nha_blackhole), .cb = snl_attr_get_flag },
{ .type = NHA_OIF, .off = _OUT(nha_oif), .cb = snl_attr_get_uint32 },
{ .type = NHA_GATEWAY, .off = _OUT(nha_gw), .cb = snl_attr_get_ip },
{ .type = NHA_FREEBSD, .arg = &_nh_fbsd_parser, .cb = snl_attr_get_nested },
};
#undef _IN
#undef _OUT
SNL_DECLARE_PARSER(snl_nhmsg_parser, struct nhmsg, _fp_p_nh, _nla_p_nh);
static const struct snl_hdr_parser *snl_all_route_parsers[] = {
&_metrics_mp_nh_parser, &_mpath_nh_parser, &_metrics_parser, &snl_rtm_route_parser,
&snl_rtm_link_parser, &snl_rtm_link_parser_simple, &snl_rtm_neigh_parser,
&snl_rtm_addr_parser,
&snl_rtm_link_parser, &snl_rtm_link_parser_simple,
&_neigh_fbsd_parser, &snl_rtm_neigh_parser,
&snl_rtm_addr_parser, &_nh_fbsd_parser, &snl_nhmsg_parser,
};
#endif