Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2019-03-09

The following pull-request contains BPF updates for your *net* tree.

The main changes are:

1) Fix a crash in AF_XDP's xsk_diag_put_ring() which was passing
   wrong queue argument, from Eric.

2) Fix a regression due to wrong test for TCP GSO packets used in
   various BPF helpers like NAT64, from Willem.

3) Fix a sk_msg strparser warning which asserts that strparser must
   be stopped first, from Jakub.

4) Fix rejection of invalid options/bind flags in AF_XDP, from Björn.

5) Fix GSO in bpf_lwt_push_ip_encap() which must properly set inner
   headers and inner protocol, from Peter.

6) Fix a libbpf leak when kernel does not support BTF, from Nikita.

7) Various BPF selftest and libbpf build fixes to make out-of-tree
   compilation work and to properly resolve dependencies via fixdep
   target, from Stanislav.

8) Fix rejection of invalid ldimm64 imm field, from Daniel.

9) Fix bpf stats sysctl compile warning of unused helper function
   proc_dointvec_minmax_bpf_stats() under some configs, from Arnd.

10) Fix couple of warnings about using plain integer as NULL, from Bo.

11) Fix some BPF sample spelling mistakes, from Colin.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 7 insertions, 4 deletions

diff --git a/net/core/filter.c b/net/core/filter.c
index 5ceba98069d4..f274620945ff 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -2804,7 +2804,7 @@ static int bpf_skb_proto_4_to_6(struct sk_buff *skb)
 	u32 off = skb_mac_header_len(skb);
 	int ret;
 
-	if (!skb_is_gso_tcp(skb))
+	if (skb_is_gso(skb) && !skb_is_gso_tcp(skb))
 		return -ENOTSUPP;
 
 	ret = skb_cow(skb, len_diff);
@@ -2845,7 +2845,7 @@ static int bpf_skb_proto_6_to_4(struct sk_buff *skb)
 	u32 off = skb_mac_header_len(skb);
 	int ret;
 
-	if (!skb_is_gso_tcp(skb))
+	if (skb_is_gso(skb) && !skb_is_gso_tcp(skb))
 		return -ENOTSUPP;
 
 	ret = skb_unclone(skb, GFP_ATOMIC);
@@ -2970,7 +2970,7 @@ static int bpf_skb_net_grow(struct sk_buff *skb, u32 len_diff)
 	u32 off = skb_mac_header_len(skb) + bpf_skb_net_base_len(skb);
 	int ret;
 
-	if (!skb_is_gso_tcp(skb))
+	if (skb_is_gso(skb) && !skb_is_gso_tcp(skb))
 		return -ENOTSUPP;
 
 	ret = skb_cow(skb, len_diff);
@@ -2999,7 +2999,7 @@ static int bpf_skb_net_shrink(struct sk_buff *skb, u32 len_diff)
 	u32 off = skb_mac_header_len(skb) + bpf_skb_net_base_len(skb);
 	int ret;
 
-	if (!skb_is_gso_tcp(skb))
+	if (skb_is_gso(skb) && !skb_is_gso_tcp(skb))
 		return -ENOTSUPP;
 
 	ret = skb_unclone(skb, GFP_ATOMIC);
diff --git a/net/core/lwt_bpf.c b/net/core/lwt_bpf.c
index cf2f8897ca19..126d31ff5ee3 100644
--- a/net/core/lwt_bpf.c
+++ b/net/core/lwt_bpf.c
@@ -625,6 +625,8 @@ int bpf_lwt_push_ip_encap(struct sk_buff *skb, void *hdr, u32 len, bool ingress)
 
 	/* push the encap headers and fix pointers */
 	skb_reset_inner_headers(skb);
+	skb_reset_inner_mac_header(skb);  /* mac header is not yet set */
+	skb_set_inner_protocol(skb, skb->protocol);
 	skb->encapsulation = 1;
 	skb_push(skb, len);
 	if (ingress)
diff --git a/net/core/skmsg.c b/net/core/skmsg.c
index ae6f06e45737..cc94d921476c 100644
--- a/net/core/skmsg.c
+++ b/net/core/skmsg.c
@@ -554,6 +554,7 @@ static void sk_psock_destroy_deferred(struct work_struct *gc)
 	struct sk_psock *psock = container_of(gc, struct sk_psock, gc);
 
 	/* No sk_callback_lock since already detached. */
+	strp_stop(&psock->parser.strp);
 	strp_done(&psock->parser.strp);
 
 	cancel_work_sync(&psock->work);