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

Pull networking updates from David Millar:
 "Here are some highlights from the 2065 networking commits that
  happened this development cycle:

   1) XDP support for IXGBE (John Fastabend) and thunderx (Sunil Kowuri)

   2) Add a generic XDP driver, so that anyone can test XDP even if they
      lack a networking device whose driver has explicit XDP support
      (me).

   3) Sparc64 now has an eBPF JIT too (me)

   4) Add a BPF program testing framework via BPF_PROG_TEST_RUN (Alexei
      Starovoitov)

   5) Make netfitler network namespace teardown less expensive (Florian
      Westphal)

   6) Add symmetric hashing support to nft_hash (Laura Garcia Liebana)

   7) Implement NAPI and GRO in netvsc driver (Stephen Hemminger)

   8) Support TC flower offload statistics in mlxsw (Arkadi Sharshevsky)

   9) Multiqueue support in stmmac driver (Joao Pinto)

  10) Remove TCP timewait recycling, it never really could possibly work
      well in the real world and timestamp randomization really zaps any
      hint of usability this feature had (Soheil Hassas Yeganeh)

  11) Support level3 vs level4 ECMP route hashing in ipv4 (Nikolay
      Aleksandrov)

  12) Add socket busy poll support to epoll (Sridhar Samudrala)

  13) Netlink extended ACK support (Johannes Berg, Pablo Neira Ayuso,
      and several others)

  14) IPSEC hw offload infrastructure (Steffen Klassert)"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2065 commits)
  tipc: refactor function tipc_sk_recv_stream()
  tipc: refactor function tipc_sk_recvmsg()
  net: thunderx: Optimize page recycling for XDP
  net: thunderx: Support for XDP header adjustment
  net: thunderx: Add support for XDP_TX
  net: thunderx: Add support for XDP_DROP
  net: thunderx: Add basic XDP support
  net: thunderx: Cleanup receive buffer allocation
  net: thunderx: Optimize CQE_TX handling
  net: thunderx: Optimize RBDR descriptor handling
  net: thunderx: Support for page recycling
  ipx: call ipxitf_put() in ioctl error path
  net: sched: add helpers to handle extended actions
  qed*: Fix issues in the ptp filter config implementation.
  qede: Fix concurrency issue in PTP Tx path processing.
  stmmac: Add support for SIMATIC IOT2000 platform
  net: hns: fix ethtool_get_strings overflow in hns driver
  tcp: fix wraparound issue in tcp_lp
  bpf, arm64: fix jit branch offset related to ldimm64
  bpf, arm64: implement jiting of BPF_XADD
  ...

1 files changed, 38 insertions, 10 deletions

diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index e05b924618a0..a90e8f355c00 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -428,24 +428,49 @@ static struct tc_action_ops *tc_lookup_action(struct nlattr *kind)
 	return res;
 }
 
+/*TCA_ACT_MAX_PRIO is 32, there count upto 32 */
+#define TCA_ACT_MAX_PRIO_MASK 0x1FF
 int tcf_action_exec(struct sk_buff *skb, struct tc_action **actions,
 		    int nr_actions, struct tcf_result *res)
 {
 	int ret = -1, i;
+	u32 jmp_prgcnt = 0;
+	u32 jmp_ttl = TCA_ACT_MAX_PRIO; /*matches actions per filter */
 
 	if (skb_skip_tc_classify(skb))
 		return TC_ACT_OK;
 
+restart_act_graph:
 	for (i = 0; i < nr_actions; i++) {
 		const struct tc_action *a = actions[i];
 
+		if (jmp_prgcnt > 0) {
+			jmp_prgcnt -= 1;
+			continue;
+		}
 repeat:
 		ret = a->ops->act(skb, a, res);
 		if (ret == TC_ACT_REPEAT)
 			goto repeat;	/* we need a ttl - JHS */
+
+		if (TC_ACT_EXT_CMP(ret, TC_ACT_JUMP)) {
+			jmp_prgcnt = ret & TCA_ACT_MAX_PRIO_MASK;
+			if (!jmp_prgcnt || (jmp_prgcnt > nr_actions)) {
+				/* faulty opcode, stop pipeline */
+				return TC_ACT_OK;
+			} else {
+				jmp_ttl -= 1;
+				if (jmp_ttl > 0)
+					goto restart_act_graph;
+				else /* faulty graph, stop pipeline */
+					return TC_ACT_OK;
+			}
+		}
+
 		if (ret != TC_ACT_PIPE)
 			break;
 	}
+
 	return ret;
 }
 EXPORT_SYMBOL(tcf_action_exec);
@@ -558,7 +583,7 @@ struct tc_action *tcf_action_init_1(struct net *net, struct nlattr *nla,
 	int err;
 
 	if (name == NULL) {
-		err = nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL);
+		err = nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL, NULL);
 		if (err < 0)
 			goto err_out;
 		err = -EINVAL;
@@ -663,7 +688,7 @@ int tcf_action_init(struct net *net, struct nlattr *nla, struct nlattr *est,
 	int err;
 	int i;
 
-	err = nla_parse_nested(tb, TCA_ACT_MAX_PRIO, nla, NULL);
+	err = nla_parse_nested(tb, TCA_ACT_MAX_PRIO, nla, NULL, NULL);
 	if (err < 0)
 		return err;
 
@@ -795,7 +820,7 @@ static struct tc_action *tcf_action_get_1(struct net *net, struct nlattr *nla,
 	int index;
 	int err;
 
-	err = nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL);
+	err = nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL, NULL);
 	if (err < 0)
 		goto err_out;
 
@@ -844,7 +869,7 @@ static int tca_action_flush(struct net *net, struct nlattr *nla,
 
 	b = skb_tail_pointer(skb);
 
-	err = nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL);
+	err = nla_parse_nested(tb, TCA_ACT_MAX, nla, NULL, NULL);
 	if (err < 0)
 		goto err_out;
 
@@ -930,7 +955,7 @@ tca_action_gd(struct net *net, struct nlattr *nla, struct nlmsghdr *n,
 	struct tc_action *act;
 	LIST_HEAD(actions);
 
-	ret = nla_parse_nested(tb, TCA_ACT_MAX_PRIO, nla, NULL);
+	ret = nla_parse_nested(tb, TCA_ACT_MAX_PRIO, nla, NULL, NULL);
 	if (ret < 0)
 		return ret;
 
@@ -1002,7 +1027,8 @@ static int tcf_action_add(struct net *net, struct nlattr *nla,
 	return tcf_add_notify(net, n, &actions, portid);
 }
 
-static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n)
+static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n,
+			 struct netlink_ext_ack *extack)
 {
 	struct net *net = sock_net(skb->sk);
 	struct nlattr *tca[TCA_ACT_MAX + 1];
@@ -1013,7 +1039,8 @@ static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n)
 	    !netlink_capable(skb, CAP_NET_ADMIN))
 		return -EPERM;
 
-	ret = nlmsg_parse(n, sizeof(struct tcamsg), tca, TCA_ACT_MAX, NULL);
+	ret = nlmsg_parse(n, sizeof(struct tcamsg), tca, TCA_ACT_MAX, NULL,
+			  extack);
 	if (ret < 0)
 		return ret;
 
@@ -1060,19 +1087,20 @@ static struct nlattr *find_dump_kind(const struct nlmsghdr *n)
 	struct nlattr *nla[TCAA_MAX + 1];
 	struct nlattr *kind;
 
-	if (nlmsg_parse(n, sizeof(struct tcamsg), nla, TCAA_MAX, NULL) < 0)
+	if (nlmsg_parse(n, sizeof(struct tcamsg), nla, TCAA_MAX,
+			NULL, NULL) < 0)
 		return NULL;
 	tb1 = nla[TCA_ACT_TAB];
 	if (tb1 == NULL)
 		return NULL;
 
 	if (nla_parse(tb, TCA_ACT_MAX_PRIO, nla_data(tb1),
-		      NLMSG_ALIGN(nla_len(tb1)), NULL) < 0)
+		      NLMSG_ALIGN(nla_len(tb1)), NULL, NULL) < 0)
 		return NULL;
 
 	if (tb[1] == NULL)
 		return NULL;
-	if (nla_parse_nested(tb2, TCA_ACT_MAX, tb[1], NULL) < 0)
+	if (nla_parse_nested(tb2, TCA_ACT_MAX, tb[1], NULL, NULL) < 0)
 		return NULL;
 	kind = tb2[TCA_ACT_KIND];