Merge tag 'asoc-v5.0' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v5.0/v4.20

As ever there's a lot of small and driver specific changes going on
here, but we do also have some relatively large changes in the core
thanks to the hard work of Charles and Morimoto-san:

 - More component transitions from Morimoto-san, I think we're about
   finished with this.  Thanks for all the hard work!
 - Morimoto-san also added a bunch of for_each_foo macros
 - A bunch of cleanups and fixes for DAPM from Charles.
 - MCLK support for several different devices, including CS42L51, STM32
   SAI, and MAX98373.
 - Support for Allwinner A64 CODEC analog, Intel boards with DA7219 and
   MAX98927, Meson AXG PDM inputs, Nuvoton NAU8822, Renesas R8A7744 and
   TI PCM3060.

1 files changed, 38 insertions, 17 deletions

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 5610061e7f2e..d6e94dc7e290 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -2715,10 +2715,12 @@ tpacket_error:
 			}
 		}
 
-		if (po->has_vnet_hdr && virtio_net_hdr_to_skb(skb, vnet_hdr,
-							      vio_le())) {
-			tp_len = -EINVAL;
-			goto tpacket_error;
+		if (po->has_vnet_hdr) {
+			if (virtio_net_hdr_to_skb(skb, vnet_hdr, vio_le())) {
+				tp_len = -EINVAL;
+				goto tpacket_error;
+			}
+			virtio_net_hdr_set_proto(skb, vnet_hdr);
 		}
 
 		skb->destructor = tpacket_destruct_skb;
@@ -2915,6 +2917,7 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
 		if (err)
 			goto out_free;
 		len += sizeof(vnet_hdr);
+		virtio_net_hdr_set_proto(skb, &vnet_hdr);
 	}
 
 	skb_probe_transport_header(skb, reserve);
@@ -4137,36 +4140,52 @@ static const struct vm_operations_struct packet_mmap_ops = {
 	.close	=	packet_mm_close,
 };
 
-static void free_pg_vec(struct pgv *pg_vec, unsigned int len)
+static void free_pg_vec(struct pgv *pg_vec, unsigned int order,
+			unsigned int len)
 {
 	int i;
 
 	for (i = 0; i < len; i++) {
 		if (likely(pg_vec[i].buffer)) {
-			kvfree(pg_vec[i].buffer);
+			if (is_vmalloc_addr(pg_vec[i].buffer))
+				vfree(pg_vec[i].buffer);
+			else
+				free_pages((unsigned long)pg_vec[i].buffer,
+					   order);
 			pg_vec[i].buffer = NULL;
 		}
 	}
 	kfree(pg_vec);
 }
 
-static char *alloc_one_pg_vec_page(unsigned long size)
+static char *alloc_one_pg_vec_page(unsigned long order)
 {
 	char *buffer;
+	gfp_t gfp_flags = GFP_KERNEL | __GFP_COMP |
+			  __GFP_ZERO | __GFP_NOWARN | __GFP_NORETRY;
 
-	buffer = kvzalloc(size, GFP_KERNEL);
+	buffer = (char *) __get_free_pages(gfp_flags, order);
 	if (buffer)
 		return buffer;
 
-	buffer = kvzalloc(size, GFP_KERNEL | __GFP_RETRY_MAYFAIL);
+	/* __get_free_pages failed, fall back to vmalloc */
+	buffer = vzalloc(array_size((1 << order), PAGE_SIZE));
+	if (buffer)
+		return buffer;
+
+	/* vmalloc failed, lets dig into swap here */
+	gfp_flags &= ~__GFP_NORETRY;
+	buffer = (char *) __get_free_pages(gfp_flags, order);
+	if (buffer)
+		return buffer;
 
-	return buffer;
+	/* complete and utter failure */
+	return NULL;
 }
 
-static struct pgv *alloc_pg_vec(struct tpacket_req *req)
+static struct pgv *alloc_pg_vec(struct tpacket_req *req, int order)
 {
 	unsigned int block_nr = req->tp_block_nr;
-	unsigned long size = req->tp_block_size;
 	struct pgv *pg_vec;
 	int i;
 
@@ -4175,7 +4194,7 @@ static struct pgv *alloc_pg_vec(struct tpacket_req *req)
 		goto out;
 
 	for (i = 0; i < block_nr; i++) {
-		pg_vec[i].buffer = alloc_one_pg_vec_page(size);
+		pg_vec[i].buffer = alloc_one_pg_vec_page(order);
 		if (unlikely(!pg_vec[i].buffer))
 			goto out_free_pgvec;
 	}
@@ -4184,7 +4203,7 @@ out:
 	return pg_vec;
 
 out_free_pgvec:
-	free_pg_vec(pg_vec, block_nr);
+	free_pg_vec(pg_vec, order, block_nr);
 	pg_vec = NULL;
 	goto out;
 }
@@ -4194,9 +4213,9 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
 {
 	struct pgv *pg_vec = NULL;
 	struct packet_sock *po = pkt_sk(sk);
+	int was_running, order = 0;
 	struct packet_ring_buffer *rb;
 	struct sk_buff_head *rb_queue;
-	int was_running;
 	__be16 num;
 	int err = -EINVAL;
 	/* Added to avoid minimal code churn */
@@ -4258,7 +4277,8 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
 			goto out;
 
 		err = -ENOMEM;
-		pg_vec = alloc_pg_vec(req);
+		order = get_order(req->tp_block_size);
+		pg_vec = alloc_pg_vec(req, order);
 		if (unlikely(!pg_vec))
 			goto out;
 		switch (po->tp_version) {
@@ -4312,6 +4332,7 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
 		rb->frame_size = req->tp_frame_size;
 		spin_unlock_bh(&rb_queue->lock);
 
+		swap(rb->pg_vec_order, order);
 		swap(rb->pg_vec_len, req->tp_block_nr);
 
 		rb->pg_vec_pages = req->tp_block_size/PAGE_SIZE;
@@ -4337,7 +4358,7 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
 	}
 
 	if (pg_vec)
-		free_pg_vec(pg_vec, req->tp_block_nr);
+		free_pg_vec(pg_vec, order, req->tp_block_nr);
 out:
 	return err;
 }