Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from David Miller:

 1) Allow setting bluetooth L2CAP modes via socket option, from Luiz
    Augusto von Dentz.

 2) Add GSO partial support to igc, from Sasha Neftin.

 3) Several cleanups and improvements to r8169 from Heiner Kallweit.

 4) Add IF_OPER_TESTING link state and use it when ethtool triggers a
    device self-test. From Andrew Lunn.

 5) Start moving away from custom driver versions, use the globally
    defined kernel version instead, from Leon Romanovsky.

 6) Support GRO vis gro_cells in DSA layer, from Alexander Lobakin.

 7) Allow hard IRQ deferral during NAPI, from Eric Dumazet.

 8) Add sriov and vf support to hinic, from Luo bin.

 9) Support Media Redundancy Protocol (MRP) in the bridging code, from
    Horatiu Vultur.

10) Support netmap in the nft_nat code, from Pablo Neira Ayuso.

11) Allow UDPv6 encapsulation of ESP in the ipsec code, from Sabrina
    Dubroca. Also add ipv6 support for espintcp.

12) Lots of ReST conversions of the networking documentation, from Mauro
    Carvalho Chehab.

13) Support configuration of ethtool rxnfc flows in bcmgenet driver,
    from Doug Berger.

14) Allow to dump cgroup id and filter by it in inet_diag code, from
    Dmitry Yakunin.

15) Add infrastructure to export netlink attribute policies to
    userspace, from Johannes Berg.

16) Several optimizations to sch_fq scheduler, from Eric Dumazet.

17) Fallback to the default qdisc if qdisc init fails because otherwise
    a packet scheduler init failure will make a device inoperative. From
    Jesper Dangaard Brouer.

18) Several RISCV bpf jit optimizations, from Luke Nelson.

19) Correct the return type of the ->ndo_start_xmit() method in several
    drivers, it's netdev_tx_t but many drivers were using
    'int'. From Yunjian Wang.

20) Add an ethtool interface for PHY master/slave config, from Oleksij
    Rempel.

21) Add BPF iterators, from Yonghang Song.

22) Add cable test infrastructure, including ethool interfaces, from
    Andrew Lunn. Marvell PHY driver is the first to support this
    facility.

23) Remove zero-length arrays all over, from Gustavo A. R. Silva.

24) Calculate and maintain an explicit frame size in XDP, from Jesper
    Dangaard Brouer.

25) Add CAP_BPF, from Alexei Starovoitov.

26) Support terse dumps in the packet scheduler, from Vlad Buslov.

27) Support XDP_TX bulking in dpaa2 driver, from Ioana Ciornei.

28) Add devm_register_netdev(), from Bartosz Golaszewski.

29) Minimize qdisc resets, from Cong Wang.

30) Get rid of kernel_getsockopt and kernel_setsockopt in order to
    eliminate set_fs/get_fs calls. From Christoph Hellwig.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2517 commits)
  selftests: net: ip_defrag: ignore EPERM
  net_failover: fixed rollback in net_failover_open()
  Revert "tipc: Fix potential tipc_aead refcnt leak in tipc_crypto_rcv"
  Revert "tipc: Fix potential tipc_node refcnt leak in tipc_rcv"
  vmxnet3: allow rx flow hash ops only when rss is enabled
  hinic: add set_channels ethtool_ops support
  selftests/bpf: Add a default $(CXX) value
  tools/bpf: Don't use $(COMPILE.c)
  bpf, selftests: Use bpf_probe_read_kernel
  s390/bpf: Use bcr 0,%0 as tail call nop filler
  s390/bpf: Maintain 8-byte stack alignment
  selftests/bpf: Fix verifier test
  selftests/bpf: Fix sample_cnt shared between two threads
  bpf, selftests: Adapt cls_redirect to call csum_level helper
  bpf: Add csum_level helper for fixing up csum levels
  bpf: Fix up bpf_skb_adjust_room helper's skb csum setting
  sfc: add missing annotation for efx_ef10_try_update_nic_stats_vf()
  crypto/chtls: IPv6 support for inline TLS
  Crypto/chcr: Fixes a coccinile check error
  Crypto/chcr: Fixes compilations warnings
  ...

1 files changed, 295 insertions, 39 deletions

diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c
index 9ddfcd002d3b..d7bd8b1f27d5 100644
--- a/net/netfilter/nf_conntrack_netlink.c
+++ b/net/netfilter/nf_conntrack_netlink.c
@@ -54,6 +54,8 @@
 #include <linux/netfilter/nfnetlink.h>
 #include <linux/netfilter/nfnetlink_conntrack.h>
 
+#include "nf_internals.h"
+
 MODULE_LICENSE("GPL");
 
 static int ctnetlink_dump_tuples_proto(struct sk_buff *skb,
@@ -544,14 +546,16 @@ static int ctnetlink_dump_info(struct sk_buff *skb, struct nf_conn *ct)
 
 static int
 ctnetlink_fill_info(struct sk_buff *skb, u32 portid, u32 seq, u32 type,
-		    struct nf_conn *ct, bool extinfo)
+		    struct nf_conn *ct, bool extinfo, unsigned int flags)
 {
 	const struct nf_conntrack_zone *zone;
 	struct nlmsghdr *nlh;
 	struct nfgenmsg *nfmsg;
 	struct nlattr *nest_parms;
-	unsigned int flags = portid ? NLM_F_MULTI : 0, event;
+	unsigned int event;
 
+	if (portid)
+		flags |= NLM_F_MULTI;
 	event = nfnl_msg_type(NFNL_SUBSYS_CTNETLINK, IPCTNL_MSG_CT_NEW);
 	nlh = nlmsg_put(skb, portid, seq, event, sizeof(*nfmsg), flags);
 	if (nlh == NULL)
@@ -847,17 +851,70 @@ static int ctnetlink_done(struct netlink_callback *cb)
 }
 
 struct ctnetlink_filter {
+	u_int32_t cta_flags;
 	u8 family;
+
+	u_int32_t orig_flags;
+	u_int32_t reply_flags;
+
+	struct nf_conntrack_tuple orig;
+	struct nf_conntrack_tuple reply;
+	struct nf_conntrack_zone zone;
+
 	struct {
 		u_int32_t val;
 		u_int32_t mask;
 	} mark;
 };
 
+static const struct nla_policy cta_filter_nla_policy[CTA_FILTER_MAX + 1] = {
+	[CTA_FILTER_ORIG_FLAGS]		= { .type = NLA_U32 },
+	[CTA_FILTER_REPLY_FLAGS]	= { .type = NLA_U32 },
+};
+
+static int ctnetlink_parse_filter(const struct nlattr *attr,
+				  struct ctnetlink_filter *filter)
+{
+	struct nlattr *tb[CTA_FILTER_MAX + 1];
+	int ret = 0;
+
+	ret = nla_parse_nested(tb, CTA_FILTER_MAX, attr, cta_filter_nla_policy,
+			       NULL);
+	if (ret)
+		return ret;
+
+	if (tb[CTA_FILTER_ORIG_FLAGS]) {
+		filter->orig_flags = nla_get_u32(tb[CTA_FILTER_ORIG_FLAGS]);
+		if (filter->orig_flags & ~CTA_FILTER_F_ALL)
+			return -EOPNOTSUPP;
+	}
+
+	if (tb[CTA_FILTER_REPLY_FLAGS]) {
+		filter->reply_flags = nla_get_u32(tb[CTA_FILTER_REPLY_FLAGS]);
+		if (filter->reply_flags & ~CTA_FILTER_F_ALL)
+			return -EOPNOTSUPP;
+	}
+
+	return 0;
+}
+
+static int ctnetlink_parse_zone(const struct nlattr *attr,
+				struct nf_conntrack_zone *zone);
+static int ctnetlink_parse_tuple_filter(const struct nlattr * const cda[],
+					 struct nf_conntrack_tuple *tuple,
+					 u32 type, u_int8_t l3num,
+					 struct nf_conntrack_zone *zone,
+					 u_int32_t flags);
+
+/* applied on filters */
+#define CTA_FILTER_F_CTA_MARK			(1 << 0)
+#define CTA_FILTER_F_CTA_MARK_MASK		(1 << 1)
+
 static struct ctnetlink_filter *
 ctnetlink_alloc_filter(const struct nlattr * const cda[], u8 family)
 {
 	struct ctnetlink_filter *filter;
+	int err;
 
 #ifndef CONFIG_NF_CONNTRACK_MARK
 	if (cda[CTA_MARK] || cda[CTA_MARK_MASK])
@@ -871,14 +928,65 @@ ctnetlink_alloc_filter(const struct nlattr * const cda[], u8 family)
 	filter->family = family;
 
 #ifdef CONFIG_NF_CONNTRACK_MARK
-	if (cda[CTA_MARK] && cda[CTA_MARK_MASK]) {
+	if (cda[CTA_MARK]) {
 		filter->mark.val = ntohl(nla_get_be32(cda[CTA_MARK]));
-		filter->mark.mask = ntohl(nla_get_be32(cda[CTA_MARK_MASK]));
+		filter->cta_flags |= CTA_FILTER_FLAG(CTA_MARK);
+
+		if (cda[CTA_MARK_MASK]) {
+			filter->mark.mask = ntohl(nla_get_be32(cda[CTA_MARK_MASK]));
+			filter->cta_flags |= CTA_FILTER_FLAG(CTA_MARK_MASK);
+		} else {
+			filter->mark.mask = 0xffffffff;
+		}
+	} else if (cda[CTA_MARK_MASK]) {
+		return ERR_PTR(-EINVAL);
 	}
 #endif
+	if (!cda[CTA_FILTER])
+		return filter;
+
+	err = ctnetlink_parse_zone(cda[CTA_ZONE], &filter->zone);
+	if (err < 0)
+		return ERR_PTR(err);
+
+	err = ctnetlink_parse_filter(cda[CTA_FILTER], filter);
+	if (err < 0)
+		return ERR_PTR(err);
+
+	if (filter->orig_flags) {
+		if (!cda[CTA_TUPLE_ORIG])
+			return ERR_PTR(-EINVAL);
+
+		err = ctnetlink_parse_tuple_filter(cda, &filter->orig,
+						   CTA_TUPLE_ORIG,
+						   filter->family,
+						   &filter->zone,
+						   filter->orig_flags);
+		if (err < 0)
+			return ERR_PTR(err);
+	}
+
+	if (filter->reply_flags) {
+		if (!cda[CTA_TUPLE_REPLY])
+			return ERR_PTR(-EINVAL);
+
+		err = ctnetlink_parse_tuple_filter(cda, &filter->reply,
+						   CTA_TUPLE_REPLY,
+						   filter->family,
+						   &filter->zone,
+						   filter->orig_flags);
+		if (err < 0)
+			return ERR_PTR(err);
+	}
+
 	return filter;
 }
 
+static bool ctnetlink_needs_filter(u8 family, const struct nlattr * const *cda)
+{
+	return family || cda[CTA_MARK] || cda[CTA_FILTER];
+}
+
 static int ctnetlink_start(struct netlink_callback *cb)
 {
 	const struct nlattr * const *cda = cb->data;
@@ -886,7 +994,7 @@ static int ctnetlink_start(struct netlink_callback *cb)
 	struct nfgenmsg *nfmsg = nlmsg_data(cb->nlh);
 	u8 family = nfmsg->nfgen_family;
 
-	if (family || (cda[CTA_MARK] && cda[CTA_MARK_MASK])) {
+	if (ctnetlink_needs_filter(family, cda)) {
 		filter = ctnetlink_alloc_filter(cda, family);
 		if (IS_ERR(filter))
 			return PTR_ERR(filter);
@@ -896,9 +1004,79 @@ static int ctnetlink_start(struct netlink_callback *cb)
 	return 0;
 }
 
+static int ctnetlink_filter_match_tuple(struct nf_conntrack_tuple *filter_tuple,
+					struct nf_conntrack_tuple *ct_tuple,
+					u_int32_t flags, int family)
+{
+	switch (family) {
+	case NFPROTO_IPV4:
+		if ((flags & CTA_FILTER_FLAG(CTA_IP_SRC)) &&
+		    filter_tuple->src.u3.ip != ct_tuple->src.u3.ip)
+			return  0;
+
+		if ((flags & CTA_FILTER_FLAG(CTA_IP_DST)) &&
+		    filter_tuple->dst.u3.ip != ct_tuple->dst.u3.ip)
+			return  0;
+		break;
+	case NFPROTO_IPV6:
+		if ((flags & CTA_FILTER_FLAG(CTA_IP_SRC)) &&
+		    !ipv6_addr_cmp(&filter_tuple->src.u3.in6,
+				   &ct_tuple->src.u3.in6))
+			return 0;
+
+		if ((flags & CTA_FILTER_FLAG(CTA_IP_DST)) &&
+		    !ipv6_addr_cmp(&filter_tuple->dst.u3.in6,
+				   &ct_tuple->dst.u3.in6))
+			return 0;
+		break;
+	}
+
+	if ((flags & CTA_FILTER_FLAG(CTA_PROTO_NUM)) &&
+	    filter_tuple->dst.protonum != ct_tuple->dst.protonum)
+		return 0;
+
+	switch (ct_tuple->dst.protonum) {
+	case IPPROTO_TCP:
+	case IPPROTO_UDP:
+		if ((flags & CTA_FILTER_FLAG(CTA_PROTO_SRC_PORT)) &&
+		    filter_tuple->src.u.tcp.port != ct_tuple->src.u.tcp.port)
+			return 0;
+
+		if ((flags & CTA_FILTER_FLAG(CTA_PROTO_DST_PORT)) &&
+		    filter_tuple->dst.u.tcp.port != ct_tuple->dst.u.tcp.port)
+			return 0;
+		break;
+	case IPPROTO_ICMP:
+		if ((flags & CTA_FILTER_FLAG(CTA_PROTO_ICMP_TYPE)) &&
+		    filter_tuple->dst.u.icmp.type != ct_tuple->dst.u.icmp.type)
+			return 0;
+		if ((flags & CTA_FILTER_FLAG(CTA_PROTO_ICMP_CODE)) &&
+		    filter_tuple->dst.u.icmp.code != ct_tuple->dst.u.icmp.code)
+			return 0;
+		if ((flags & CTA_FILTER_FLAG(CTA_PROTO_ICMP_ID)) &&
+		    filter_tuple->src.u.icmp.id != ct_tuple->src.u.icmp.id)
+			return 0;
+		break;
+	case IPPROTO_ICMPV6:
+		if ((flags & CTA_FILTER_FLAG(CTA_PROTO_ICMPV6_TYPE)) &&
+		    filter_tuple->dst.u.icmp.type != ct_tuple->dst.u.icmp.type)
+			return 0;
+		if ((flags & CTA_FILTER_FLAG(CTA_PROTO_ICMPV6_CODE)) &&
+		    filter_tuple->dst.u.icmp.code != ct_tuple->dst.u.icmp.code)
+			return 0;
+		if ((flags & CTA_FILTER_FLAG(CTA_PROTO_ICMPV6_ID)) &&
+		    filter_tuple->src.u.icmp.id != ct_tuple->src.u.icmp.id)
+			return 0;
+		break;
+	}
+
+	return 1;
+}
+
 static int ctnetlink_filter_match(struct nf_conn *ct, void *data)
 {
 	struct ctnetlink_filter *filter = data;
+	struct nf_conntrack_tuple *tuple;
 
 	if (filter == NULL)
 		goto out;
@@ -910,8 +1088,28 @@ static int ctnetlink_filter_match(struct nf_conn *ct, void *data)
 	if (filter->family && nf_ct_l3num(ct) != filter->family)
 		goto ignore_entry;
 
+	if (filter->orig_flags) {
+		tuple = nf_ct_tuple(ct, IP_CT_DIR_ORIGINAL);
+		if (!ctnetlink_filter_match_tuple(&filter->orig, tuple,
+						  filter->orig_flags,
+						  filter->family))
+			goto ignore_entry;
+	}
+
+	if (filter->reply_flags) {
+		tuple = nf_ct_tuple(ct, IP_CT_DIR_REPLY);
+		if (!ctnetlink_filter_match_tuple(&filter->reply, tuple,
+						  filter->reply_flags,
+						  filter->family))
+			goto ignore_entry;
+	}
+
 #ifdef CONFIG_NF_CONNTRACK_MARK
-	if ((ct->mark & filter->mark.mask) != filter->mark.val)
+	if ((filter->cta_flags & CTA_FILTER_FLAG(CTA_MARK_MASK)) &&
+	    (ct->mark & filter->mark.mask) != filter->mark.val)
+		goto ignore_entry;
+	else if ((filter->cta_flags & CTA_FILTER_FLAG(CTA_MARK)) &&
+		 ct->mark != filter->mark.val)
 		goto ignore_entry;
 #endif
 
@@ -925,6 +1123,7 @@ ignore_entry:
 static int
 ctnetlink_dump_table(struct sk_buff *skb, struct netlink_callback *cb)
 {
+	unsigned int flags = cb->data ? NLM_F_DUMP_FILTERED : 0;
 	struct net *net = sock_net(skb->sk);
 	struct nf_conn *ct, *last;
 	struct nf_conntrack_tuple_hash *h;
@@ -979,7 +1178,7 @@ restart:
 			ctnetlink_fill_info(skb, NETLINK_CB(cb->skb).portid,
 					    cb->nlh->nlmsg_seq,
 					    NFNL_MSG_TYPE(cb->nlh->nlmsg_type),
-					    ct, true);
+					    ct, true, flags);
 			if (res < 0) {
 				nf_conntrack_get(&ct->ct_general);
 				cb->args[1] = (unsigned long)ct;
@@ -1014,31 +1213,50 @@ out:
 }
 
 static int ipv4_nlattr_to_tuple(struct nlattr *tb[],
-				struct nf_conntrack_tuple *t)
+				struct nf_conntrack_tuple *t,
+				u_int32_t flags)
 {
-	if (!tb[CTA_IP_V4_SRC] || !tb[CTA_IP_V4_DST])
-		return -EINVAL;
+	if (flags & CTA_FILTER_FLAG(CTA_IP_SRC)) {
+		if (!tb[CTA_IP_V4_SRC])
+			return -EINVAL;
+
+		t->src.u3.ip = nla_get_in_addr(tb[CTA_IP_V4_SRC]);
+	}
+
+	if (flags & CTA_FILTER_FLAG(CTA_IP_DST)) {
+		if (!tb[CTA_IP_V4_DST])
+			return -EINVAL;
 
-	t->src.u3.ip = nla_get_in_addr(tb[CTA_IP_V4_SRC]);
-	t->dst.u3.ip = nla_get_in_addr(tb[CTA_IP_V4_DST]);
+		t->dst.u3.ip = nla_get_in_addr(tb[CTA_IP_V4_DST]);
+	}
 
 	return 0;
 }
 
 static int ipv6_nlattr_to_tuple(struct nlattr *tb[],
-				struct nf_conntrack_tuple *t)
+				struct nf_conntrack_tuple *t,
+				u_int32_t flags)
 {
-	if (!tb[CTA_IP_V6_SRC] || !tb[CTA_IP_V6_DST])
-		return -EINVAL;
+	if (flags & CTA_FILTER_FLAG(CTA_IP_SRC)) {
+		if (!tb[CTA_IP_V6_SRC])
+			return -EINVAL;
 
-	t->src.u3.in6 = nla_get_in6_addr(tb[CTA_IP_V6_SRC]);
-	t->dst.u3.in6 = nla_get_in6_addr(tb[CTA_IP_V6_DST]);
+		t->src.u3.in6 = nla_get_in6_addr(tb[CTA_IP_V6_SRC]);
+	}
+
+	if (flags & CTA_FILTER_FLAG(CTA_IP_DST)) {
+		if (!tb[CTA_IP_V6_DST])
+			return -EINVAL;
+
+		t->dst.u3.in6 = nla_get_in6_addr(tb[CTA_IP_V6_DST]);
+	}
 
 	return 0;
 }
 
 static int ctnetlink_parse_tuple_ip(struct nlattr *attr,
-				    struct nf_conntrack_tuple *tuple)
+				    struct nf_conntrack_tuple *tuple,
+				    u_int32_t flags)
 {
 	struct nlattr *tb[CTA_IP_MAX+1];
 	int ret = 0;
@@ -1054,10 +1272,10 @@ static int ctnetlink_parse_tuple_ip(struct nlattr *attr,
 
 	switch (tuple->src.l3num) {
 	case NFPROTO_IPV4:
-		ret = ipv4_nlattr_to_tuple(tb, tuple);
+		ret = ipv4_nlattr_to_tuple(tb, tuple, flags);
 		break;
 	case NFPROTO_IPV6:
-		ret = ipv6_nlattr_to_tuple(tb, tuple);
+		ret = ipv6_nlattr_to_tuple(tb, tuple, flags);
 		break;
 	}
 
@@ -1069,7 +1287,8 @@ static const struct nla_policy proto_nla_policy[CTA_PROTO_MAX+1] = {
 };
 
 static int ctnetlink_parse_tuple_proto(struct nlattr *attr,
-				       struct nf_conntrack_tuple *tuple)
+				       struct nf_conntrack_tuple *tuple,
+				       u_int32_t flags)
 {
 	const struct nf_conntrack_l4proto *l4proto;
 	struct nlattr *tb[CTA_PROTO_MAX+1];
@@ -1080,8 +1299,12 @@ static int ctnetlink_parse_tuple_proto(struct nlattr *attr,
 	if (ret < 0)
 		return ret;
 
+	if (!(flags & CTA_FILTER_FLAG(CTA_PROTO_NUM)))
+		return 0;
+
 	if (!tb[CTA_PROTO_NUM])
 		return -EINVAL;
+
 	tuple->dst.protonum = nla_get_u8(tb[CTA_PROTO_NUM]);
 
 	rcu_read_lock();
@@ -1092,7 +1315,7 @@ static int ctnetlink_parse_tuple_proto(struct nlattr *attr,
 						     l4proto->nla_policy,
 						     NULL);
 		if (ret == 0)
-			ret = l4proto->nlattr_to_tuple(tb, tuple);
+			ret = l4proto->nlattr_to_tuple(tb, tuple, flags);
 	}
 
 	rcu_read_unlock();
@@ -1143,10 +1366,21 @@ static const struct nla_policy tuple_nla_policy[CTA_TUPLE_MAX+1] = {
 	[CTA_TUPLE_ZONE]	= { .type = NLA_U16 },
 };
 
+#define CTA_FILTER_F_ALL_CTA_PROTO \
+  (CTA_FILTER_F_CTA_PROTO_SRC_PORT | \
+   CTA_FILTER_F_CTA_PROTO_DST_PORT | \
+   CTA_FILTER_F_CTA_PROTO_ICMP_TYPE | \
+   CTA_FILTER_F_CTA_PROTO_ICMP_CODE | \
+   CTA_FILTER_F_CTA_PROTO_ICMP_ID | \
+   CTA_FILTER_F_CTA_PROTO_ICMPV6_TYPE | \
+   CTA_FILTER_F_CTA_PROTO_ICMPV6_CODE | \
+   CTA_FILTER_F_CTA_PROTO_ICMPV6_ID)
+
 static int
-ctnetlink_parse_tuple(const struct nlattr * const cda[],
-		      struct nf_conntrack_tuple *tuple, u32 type,
-		      u_int8_t l3num, struct nf_conntrack_zone *zone)
+ctnetlink_parse_tuple_filter(const struct nlattr * const cda[],
+			      struct nf_conntrack_tuple *tuple, u32 type,
+			      u_int8_t l3num, struct nf_conntrack_zone *zone,
+			      u_int32_t flags)
 {
 	struct nlattr *tb[CTA_TUPLE_MAX+1];
 	int err;
@@ -1158,23 +1392,32 @@ ctnetlink_parse_tuple(const struct nlattr * const cda[],
 	if (err < 0)
 		return err;
 
-	if (!tb[CTA_TUPLE_IP])
-		return -EINVAL;
 
 	tuple->src.l3num = l3num;
 
-	err = ctnetlink_parse_tuple_ip(tb[CTA_TUPLE_IP], tuple);
-	if (err < 0)
-		return err;
+	if (flags & CTA_FILTER_FLAG(CTA_IP_DST) ||
+	    flags & CTA_FILTER_FLAG(CTA_IP_SRC)) {
+		if (!tb[CTA_TUPLE_IP])
+			return -EINVAL;
 
-	if (!tb[CTA_TUPLE_PROTO])
-		return -EINVAL;
+		err = ctnetlink_parse_tuple_ip(tb[CTA_TUPLE_IP], tuple, flags);
+		if (err < 0)
+			return err;
+	}
 
-	err = ctnetlink_parse_tuple_proto(tb[CTA_TUPLE_PROTO], tuple);
-	if (err < 0)
-		return err;
+	if (flags & CTA_FILTER_FLAG(CTA_PROTO_NUM)) {
+		if (!tb[CTA_TUPLE_PROTO])
+			return -EINVAL;
 
-	if (tb[CTA_TUPLE_ZONE]) {
+		err = ctnetlink_parse_tuple_proto(tb[CTA_TUPLE_PROTO], tuple, flags);
+		if (err < 0)
+			return err;
+	} else if (flags & CTA_FILTER_FLAG(ALL_CTA_PROTO)) {
+		/* Can't manage proto flags without a protonum  */
+		return -EINVAL;
+	}
+
+	if ((flags & CTA_FILTER_FLAG(CTA_TUPLE_ZONE)) && tb[CTA_TUPLE_ZONE]) {
 		if (!zone)
 			return -EINVAL;
 
@@ -1193,6 +1436,15 @@ ctnetlink_parse_tuple(const struct nlattr * const cda[],
 	return 0;
 }
 
+static int
+ctnetlink_parse_tuple(const struct nlattr * const cda[],
+		      struct nf_conntrack_tuple *tuple, u32 type,
+		      u_int8_t l3num, struct nf_conntrack_zone *zone)
+{
+	return ctnetlink_parse_tuple_filter(cda, tuple, type, l3num, zone,
+					    CTA_FILTER_FLAG(ALL));
+}
+
 static const struct nla_policy help_nla_policy[CTA_HELP_MAX+1] = {
 	[CTA_HELP_NAME]		= { .type = NLA_NUL_STRING,
 				    .len = NF_CT_HELPER_NAME_LEN - 1 },
@@ -1240,6 +1492,7 @@ static const struct nla_policy ct_nla_policy[CTA_MAX+1] = {
 				    .len = NF_CT_LABELS_MAX_SIZE },
 	[CTA_LABELS_MASK]	= { .type = NLA_BINARY,
 				    .len = NF_CT_LABELS_MAX_SIZE },
+	[CTA_FILTER]		= { .type = NLA_NESTED },
 };
 
 static int ctnetlink_flush_iterate(struct nf_conn *ct, void *data)
@@ -1256,7 +1509,10 @@ static int ctnetlink_flush_conntrack(struct net *net,
 {
 	struct ctnetlink_filter *filter = NULL;
 
-	if (family || (cda[CTA_MARK] && cda[CTA_MARK_MASK])) {
+	if (ctnetlink_needs_filter(family, cda)) {
+		if (cda[CTA_FILTER])
+			return -EOPNOTSUPP;
+
 		filter = ctnetlink_alloc_filter(cda, family);
 		if (IS_ERR(filter))
 			return PTR_ERR(filter);
@@ -1385,7 +1641,7 @@ static int ctnetlink_get_conntrack(struct net *net, struct sock *ctnl,
 	}
 
 	err = ctnetlink_fill_info(skb2, NETLINK_CB(skb).portid, nlh->nlmsg_seq,
-				  NFNL_MSG_TYPE(nlh->nlmsg_type), ct, true);
+				  NFNL_MSG_TYPE(nlh->nlmsg_type), ct, true, 0);
 	nf_ct_put(ct);
 	if (err <= 0)
 		goto free;
@@ -1458,7 +1714,7 @@ restart:
 			res = ctnetlink_fill_info(skb, NETLINK_CB(cb->skb).portid,
 						  cb->nlh->nlmsg_seq,
 						  NFNL_MSG_TYPE(cb->nlh->nlmsg_type),
-						  ct, dying ? true : false);
+						  ct, dying ? true : false, 0);
 			if (res < 0) {
 				if (!atomic_inc_not_zero(&ct->ct_general.use))
 					continue;