diff options
| author | David Ahern <dsahern@gmail.com> | 2018-10-24 12:59:01 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-10-24 14:06:25 -0700 |
| commit | ae677bbb4441309e1827e60413de92363153dccb (patch) | |
| tree | 098cb71d5990c8b8677194a3091a48a95437bcc4 | |
| parent | 242afaa6968cde96824247ab984c24c466ca29f3 (diff) | |
net: Don't return invalid table id error when dumping all families
When doing a route dump across all address families, do not error out
if the table does not exist. This allows a route dump for AF_UNSPEC
with a table id that may only exist for some of the families.
Do return the table does not exist error if dumping routes for a
specific family and the table does not exist.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/ip_fib.h | 1 | ||||
| -rw-r--r-- | net/ipv4/fib_frontend.c | 4 | ||||
| -rw-r--r-- | net/ipv4/ipmr.c | 3 | ||||
| -rw-r--r-- | net/ipv6/ip6_fib.c | 3 | ||||
| -rw-r--r-- | net/ipv6/ip6mr.c | 3 |
5 files changed, 14 insertions, 0 deletions
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h index e8d9456bf36e..c5969762a8f4 100644 --- a/include/net/ip_fib.h +++ b/include/net/ip_fib.h @@ -226,6 +226,7 @@ struct fib_dump_filter { u32 table_id; /* filter_set is an optimization that an entry is set */ bool filter_set; + bool dump_all_families; unsigned char protocol; unsigned char rt_type; unsigned int flags; diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c index 5bf653f36911..6df95be96311 100644 --- a/net/ipv4/fib_frontend.c +++ b/net/ipv4/fib_frontend.c @@ -829,6 +829,7 @@ int ip_valid_fib_dump_req(struct net *net, const struct nlmsghdr *nlh, return -EINVAL; } + filter->dump_all_families = (rtm->rtm_family == AF_UNSPEC); filter->flags = rtm->rtm_flags; filter->protocol = rtm->rtm_protocol; filter->rt_type = rtm->rtm_type; @@ -899,6 +900,9 @@ static int inet_dump_fib(struct sk_buff *skb, struct netlink_callback *cb) if (filter.table_id) { tb = fib_get_table(net, filter.table_id); if (!tb) { + if (filter.dump_all_families) + return skb->len; + NL_SET_ERR_MSG(cb->extack, "ipv4: FIB table does not exist"); return -ENOENT; } diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index 7a3e2acda94c..a6defbec4f1b 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -2542,6 +2542,9 @@ static int ipmr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb) mrt = ipmr_get_table(sock_net(skb->sk), filter.table_id); if (!mrt) { + if (filter.dump_all_families) + return skb->len; + NL_SET_ERR_MSG(cb->extack, "ipv4: MR table does not exist"); return -ENOENT; } diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c index 2a058b408a6a..1b8bc008b53b 100644 --- a/net/ipv6/ip6_fib.c +++ b/net/ipv6/ip6_fib.c @@ -620,6 +620,9 @@ static int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb) if (arg.filter.table_id) { tb = fib6_get_table(net, arg.filter.table_id); if (!tb) { + if (arg.filter.dump_all_families) + return skb->len; + NL_SET_ERR_MSG_MOD(cb->extack, "FIB table does not exist"); return -ENOENT; } diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index c3317ffb09eb..e2ea691e42c6 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -2473,6 +2473,9 @@ static int ip6mr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb) mrt = ip6mr_get_table(sock_net(skb->sk), filter.table_id); if (!mrt) { + if (filter.dump_all_families) + return skb->len; + NL_SET_ERR_MSG_MOD(cb->extack, "MR table does not exist"); return -ENOENT; } |