mirror of
https://git.kernel.org/pub/scm/network/iproute2/iproute2.git
synced 2024-11-15 22:15:13 +08:00
264be1d887
While iproute2 correctly uses ifinfomsg struct as the ancillary header
when requesting an FDB dump on old kernels, it sets the message type to
RTM_GETLINK. This results in wrong reply being returned.
Fix this by using RTM_GETNEIGH instead.
Before:
$ bridge fdb show brport dummy0
Not RTM_NEWNEIGH: 00000158 00000010 00000002
After:
$ bridge fdb show brport dummy0
2a:0b:41:1c:92:d3 vlan 1 master br0 permanent
2a:0b:41:1c:92:d3 master br0 permanent
33:33:00:00:00:01 self permanent
01:00:5e:00:00:01 self permanent
Fixes: 05880354c2 ("bridge: fdb: Fix filtering with strict checking disabled")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: LiLiang <liali@redhat.com>
Acked-by: David Ahern <dsahern@gmail.com>
Acked-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
280 lines
9.0 KiB
C
280 lines
9.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __LIBNETLINK_H__
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#define __LIBNETLINK_H__ 1
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#include <stdio.h>
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#include <string.h>
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#include <asm/types.h>
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#include <linux/netlink.h>
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#include <linux/rtnetlink.h>
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#include <linux/if_link.h>
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#include <linux/if_addr.h>
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#include <linux/neighbour.h>
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#include <linux/netconf.h>
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#include <arpa/inet.h>
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struct rtnl_handle {
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int fd;
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struct sockaddr_nl local;
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struct sockaddr_nl peer;
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__u32 seq;
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__u32 dump;
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int proto;
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FILE *dump_fp;
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#define RTNL_HANDLE_F_LISTEN_ALL_NSID 0x01
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#define RTNL_HANDLE_F_SUPPRESS_NLERR 0x02
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#define RTNL_HANDLE_F_STRICT_CHK 0x04
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int flags;
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};
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struct nlmsg_list {
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struct nlmsg_list *next;
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struct nlmsghdr h;
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};
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struct nlmsg_chain {
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struct nlmsg_list *head;
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struct nlmsg_list *tail;
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};
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extern int rcvbuf;
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int rtnl_open(struct rtnl_handle *rth, unsigned int subscriptions)
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__attribute__((warn_unused_result));
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int rtnl_open_byproto(struct rtnl_handle *rth, unsigned int subscriptions,
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int protocol)
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__attribute__((warn_unused_result));
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void rtnl_close(struct rtnl_handle *rth);
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void rtnl_set_strict_dump(struct rtnl_handle *rth);
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typedef int (*req_filter_fn_t)(struct nlmsghdr *nlh, int reqlen);
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int rtnl_addrdump_req(struct rtnl_handle *rth, int family,
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req_filter_fn_t filter_fn)
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__attribute__((warn_unused_result));
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int rtnl_addrlbldump_req(struct rtnl_handle *rth, int family)
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__attribute__((warn_unused_result));
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int rtnl_routedump_req(struct rtnl_handle *rth, int family,
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req_filter_fn_t filter_fn)
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__attribute__((warn_unused_result));
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int rtnl_ruledump_req(struct rtnl_handle *rth, int family)
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__attribute__((warn_unused_result));
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int rtnl_neighdump_req(struct rtnl_handle *rth, int family,
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req_filter_fn_t filter_fn)
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__attribute__((warn_unused_result));
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int rtnl_neightbldump_req(struct rtnl_handle *rth, int family)
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__attribute__((warn_unused_result));
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int rtnl_mdbdump_req(struct rtnl_handle *rth, int family)
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__attribute__((warn_unused_result));
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int rtnl_netconfdump_req(struct rtnl_handle *rth, int family)
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__attribute__((warn_unused_result));
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int rtnl_nsiddump_req(struct rtnl_handle *rth, int family)
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__attribute__((warn_unused_result));
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int rtnl_linkdump_req(struct rtnl_handle *rth, int fam)
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__attribute__((warn_unused_result));
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int rtnl_linkdump_req_filter(struct rtnl_handle *rth, int fam, __u32 filt_mask)
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__attribute__((warn_unused_result));
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int rtnl_linkdump_req_filter_fn(struct rtnl_handle *rth, int fam,
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req_filter_fn_t fn)
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__attribute__((warn_unused_result));
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int rtnl_fdb_linkdump_req_filter_fn(struct rtnl_handle *rth,
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req_filter_fn_t filter_fn)
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__attribute__((warn_unused_result));
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int rtnl_statsdump_req_filter(struct rtnl_handle *rth, int fam, __u32 filt_mask)
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__attribute__((warn_unused_result));
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int rtnl_dump_request(struct rtnl_handle *rth, int type, void *req,
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int len)
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__attribute__((warn_unused_result));
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int rtnl_dump_request_n(struct rtnl_handle *rth, struct nlmsghdr *n)
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__attribute__((warn_unused_result));
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struct rtnl_ctrl_data {
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int nsid;
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};
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typedef int (*rtnl_filter_t)(struct nlmsghdr *n, void *);
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typedef int (*rtnl_listen_filter_t)(struct rtnl_ctrl_data *,
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struct nlmsghdr *n, void *);
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typedef int (*nl_ext_ack_fn_t)(const char *errmsg, uint32_t off,
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const struct nlmsghdr *inner_nlh);
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struct rtnl_dump_filter_arg {
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rtnl_filter_t filter;
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void *arg1;
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__u16 nc_flags;
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};
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int rtnl_dump_filter_nc(struct rtnl_handle *rth,
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rtnl_filter_t filter,
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void *arg, __u16 nc_flags);
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#define rtnl_dump_filter(rth, filter, arg) \
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rtnl_dump_filter_nc(rth, filter, arg, 0)
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int rtnl_talk(struct rtnl_handle *rtnl, struct nlmsghdr *n,
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struct nlmsghdr **answer)
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__attribute__((warn_unused_result));
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int rtnl_talk_iov(struct rtnl_handle *rtnl, struct iovec *iovec, size_t iovlen,
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struct nlmsghdr **answer)
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__attribute__((warn_unused_result));
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int rtnl_talk_suppress_rtnl_errmsg(struct rtnl_handle *rtnl, struct nlmsghdr *n,
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struct nlmsghdr **answer)
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__attribute__((warn_unused_result));
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int rtnl_send(struct rtnl_handle *rth, const void *buf, int)
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__attribute__((warn_unused_result));
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int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int)
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__attribute__((warn_unused_result));
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int nl_dump_ext_ack(const struct nlmsghdr *nlh, nl_ext_ack_fn_t errfn);
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int addattr(struct nlmsghdr *n, int maxlen, int type);
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int addattr8(struct nlmsghdr *n, int maxlen, int type, __u8 data);
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int addattr16(struct nlmsghdr *n, int maxlen, int type, __u16 data);
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int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data);
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int addattr64(struct nlmsghdr *n, int maxlen, int type, __u64 data);
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int addattrstrz(struct nlmsghdr *n, int maxlen, int type, const char *data);
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int addattr_l(struct nlmsghdr *n, int maxlen, int type,
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const void *data, int alen);
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int addraw_l(struct nlmsghdr *n, int maxlen, const void *data, int len);
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struct rtattr *addattr_nest(struct nlmsghdr *n, int maxlen, int type);
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int addattr_nest_end(struct nlmsghdr *n, struct rtattr *nest);
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struct rtattr *addattr_nest_compat(struct nlmsghdr *n, int maxlen, int type,
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const void *data, int len);
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int addattr_nest_compat_end(struct nlmsghdr *n, struct rtattr *nest);
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int rta_addattr8(struct rtattr *rta, int maxlen, int type, __u8 data);
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int rta_addattr16(struct rtattr *rta, int maxlen, int type, __u16 data);
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int rta_addattr32(struct rtattr *rta, int maxlen, int type, __u32 data);
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int rta_addattr64(struct rtattr *rta, int maxlen, int type, __u64 data);
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int rta_addattr_l(struct rtattr *rta, int maxlen, int type,
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const void *data, int alen);
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int parse_rtattr(struct rtattr *tb[], int max, struct rtattr *rta, int len);
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int parse_rtattr_flags(struct rtattr *tb[], int max, struct rtattr *rta,
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int len, unsigned short flags);
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struct rtattr *parse_rtattr_one(int type, struct rtattr *rta, int len);
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int __parse_rtattr_nested_compat(struct rtattr *tb[], int max, struct rtattr *rta, int len);
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struct rtattr *rta_nest(struct rtattr *rta, int maxlen, int type);
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int rta_nest_end(struct rtattr *rta, struct rtattr *nest);
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#define RTA_TAIL(rta) \
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((struct rtattr *) (((void *) (rta)) + \
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RTA_ALIGN((rta)->rta_len)))
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#define parse_rtattr_nested(tb, max, rta) \
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(parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)))
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#define parse_rtattr_one_nested(type, rta) \
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(parse_rtattr_one(type, RTA_DATA(rta), RTA_PAYLOAD(rta)))
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#define parse_rtattr_nested_compat(tb, max, rta, data, len) \
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({ data = RTA_PAYLOAD(rta) >= len ? RTA_DATA(rta) : NULL; \
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__parse_rtattr_nested_compat(tb, max, rta, len); })
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static inline __u8 rta_getattr_u8(const struct rtattr *rta)
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{
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return *(__u8 *)RTA_DATA(rta);
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}
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static inline __u16 rta_getattr_u16(const struct rtattr *rta)
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{
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return *(__u16 *)RTA_DATA(rta);
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}
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static inline __be16 rta_getattr_be16(const struct rtattr *rta)
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{
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return ntohs(rta_getattr_u16(rta));
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}
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static inline __u32 rta_getattr_u32(const struct rtattr *rta)
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{
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return *(__u32 *)RTA_DATA(rta);
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}
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static inline __be32 rta_getattr_be32(const struct rtattr *rta)
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{
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return ntohl(rta_getattr_u32(rta));
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}
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static inline __u64 rta_getattr_u64(const struct rtattr *rta)
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{
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__u64 tmp;
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memcpy(&tmp, RTA_DATA(rta), sizeof(__u64));
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return tmp;
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}
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static inline __s32 rta_getattr_s32(const struct rtattr *rta)
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{
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return *(__s32 *)RTA_DATA(rta);
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}
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static inline __s64 rta_getattr_s64(const struct rtattr *rta)
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{
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__s64 tmp;
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memcpy(&tmp, RTA_DATA(rta), sizeof(tmp));
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return tmp;
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}
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static inline const char *rta_getattr_str(const struct rtattr *rta)
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{
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return (const char *)RTA_DATA(rta);
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}
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int rtnl_listen_all_nsid(struct rtnl_handle *);
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int rtnl_listen(struct rtnl_handle *, rtnl_listen_filter_t handler,
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void *jarg);
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int rtnl_from_file(FILE *, rtnl_listen_filter_t handler,
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void *jarg);
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#define NLMSG_TAIL(nmsg) \
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((struct rtattr *) (((void *) (nmsg)) + NLMSG_ALIGN((nmsg)->nlmsg_len)))
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#ifndef IFA_RTA
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#define IFA_RTA(r) \
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((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
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#endif
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#ifndef IFA_PAYLOAD
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#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ifaddrmsg))
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#endif
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#ifndef IFLA_RTA
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#define IFLA_RTA(r) \
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((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg))))
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#endif
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#ifndef IFLA_PAYLOAD
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#define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ifinfomsg))
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#endif
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#ifndef NDA_RTA
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#define NDA_RTA(r) \
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((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg))))
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#endif
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#ifndef NDA_PAYLOAD
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#define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ndmsg))
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#endif
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#ifndef NDTA_RTA
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#define NDTA_RTA(r) \
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((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct ndtmsg))))
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#endif
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#ifndef NDTA_PAYLOAD
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#define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct ndtmsg))
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#endif
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#ifndef NETNS_RTA
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#define NETNS_RTA(r) \
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((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct rtgenmsg))))
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#endif
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#ifndef NETNS_PAYLOAD
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#define NETNS_PAYLOAD(n) NLMSG_PAYLOAD(n, sizeof(struct rtgenmsg))
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#endif
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#ifndef IFLA_STATS_RTA
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#define IFLA_STATS_RTA(r) \
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((struct rtattr *)(((char *)(r)) + NLMSG_ALIGN(sizeof(struct if_stats_msg))))
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#endif
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/* User defined nlmsg_type which is used mostly for logging netlink
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* messages from dump file */
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#define NLMSG_TSTAMP 15
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#endif /* __LIBNETLINK_H__ */
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