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Message-Id: <20170728155947.10062-5-sthemmin@microsoft.com>
Date: Fri, 28 Jul 2017 08:59:44 -0700
From: Stephen Hemminger <stephen@...workplumber.org>
To: kys@...rosoft.com, haiyangz@...rosoft.com, sthemmin@...rosoft.com
Cc: devel@...uxdriverproject.org, netdev@...r.kernel.org
Subject: [PATCH net-next v3 4/7] netvsc: remove unnecessary indirection of page_buffer
The internal API was passing struct hv_page_buffer **
when only simple struct hv_page_buffer * was necessary
for passing an array.
Signed-off-by: Stephen Hemminger <sthemmin@...rosoft.com>
---
drivers/net/hyperv/hyperv_net.h | 2 +-
drivers/net/hyperv/netvsc.c | 21 ++++++++++-----------
drivers/net/hyperv/netvsc_drv.c | 10 ++++------
drivers/net/hyperv/rndis_filter.c | 4 ++--
4 files changed, 17 insertions(+), 20 deletions(-)
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index fb62ea632914..9ca3ed692d73 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -190,7 +190,7 @@ void netvsc_device_remove(struct hv_device *device);
int netvsc_send(struct net_device_context *ndc,
struct hv_netvsc_packet *packet,
struct rndis_message *rndis_msg,
- struct hv_page_buffer **page_buffer,
+ struct hv_page_buffer *page_buffer,
struct sk_buff *skb);
void netvsc_linkstatus_callback(struct hv_device *device_obj,
struct rndis_message *resp);
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
index f0c15e782ce0..d3c0b19f6d34 100644
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -697,7 +697,7 @@ static u32 netvsc_copy_to_send_buf(struct netvsc_device *net_device,
u32 pend_size,
struct hv_netvsc_packet *packet,
struct rndis_message *rndis_msg,
- struct hv_page_buffer **pb,
+ struct hv_page_buffer *pb,
struct sk_buff *skb)
{
char *start = net_device->send_buf;
@@ -718,9 +718,9 @@ static u32 netvsc_copy_to_send_buf(struct netvsc_device *net_device,
}
for (i = 0; i < page_count; i++) {
- char *src = phys_to_virt((*pb)[i].pfn << PAGE_SHIFT);
- u32 offset = (*pb)[i].offset;
- u32 len = (*pb)[i].len;
+ char *src = phys_to_virt(pb[i].pfn << PAGE_SHIFT);
+ u32 offset = pb[i].offset;
+ u32 len = pb[i].len;
memcpy(dest, (src + offset), len);
msg_size += len;
@@ -739,7 +739,7 @@ static inline int netvsc_send_pkt(
struct hv_device *device,
struct hv_netvsc_packet *packet,
struct netvsc_device *net_device,
- struct hv_page_buffer **pb,
+ struct hv_page_buffer *pb,
struct sk_buff *skb)
{
struct nvsp_message nvmsg;
@@ -750,7 +750,6 @@ static inline int netvsc_send_pkt(
struct netdev_queue *txq = netdev_get_tx_queue(ndev, packet->q_idx);
u64 req_id;
int ret;
- struct hv_page_buffer *pgbuf;
u32 ring_avail = hv_ringbuf_avail_percent(&out_channel->outbound);
nvmsg.hdr.msg_type = NVSP_MSG1_TYPE_SEND_RNDIS_PKT;
@@ -776,11 +775,11 @@ static inline int netvsc_send_pkt(
return -ENODEV;
if (packet->page_buf_cnt) {
- pgbuf = packet->cp_partial ? (*pb) +
- packet->rmsg_pgcnt : (*pb);
+ if (packet->cp_partial)
+ pb += packet->rmsg_pgcnt;
+
ret = vmbus_sendpacket_pagebuffer_ctl(out_channel,
- pgbuf,
- packet->page_buf_cnt,
+ pb, packet->page_buf_cnt,
&nvmsg,
sizeof(struct nvsp_message),
req_id,
@@ -830,7 +829,7 @@ static inline void move_pkt_msd(struct hv_netvsc_packet **msd_send,
int netvsc_send(struct net_device_context *ndev_ctx,
struct hv_netvsc_packet *packet,
struct rndis_message *rndis_msg,
- struct hv_page_buffer **pb,
+ struct hv_page_buffer *pb,
struct sk_buff *skb)
{
struct netvsc_device *net_device
diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c
index a04f2efbbc25..8ff4cbf582cc 100644
--- a/drivers/net/hyperv/netvsc_drv.c
+++ b/drivers/net/hyperv/netvsc_drv.c
@@ -282,9 +282,8 @@ static u32 fill_pg_buf(struct page *page, u32 offset, u32 len,
static u32 init_page_array(void *hdr, u32 len, struct sk_buff *skb,
struct hv_netvsc_packet *packet,
- struct hv_page_buffer **page_buf)
+ struct hv_page_buffer *pb)
{
- struct hv_page_buffer *pb = *page_buf;
u32 slots_used = 0;
char *data = skb->data;
int frags = skb_shinfo(skb)->nr_frags;
@@ -359,8 +358,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
u32 rndis_msg_size;
struct rndis_per_packet_info *ppi;
u32 hash;
- struct hv_page_buffer page_buf[MAX_PAGE_BUFFER_COUNT];
- struct hv_page_buffer *pb = page_buf;
+ struct hv_page_buffer pb[MAX_PAGE_BUFFER_COUNT];
/* We can only transmit MAX_PAGE_BUFFER_COUNT number
* of pages in a single packet. If skb is scattered around
@@ -503,12 +501,12 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
rndis_msg->msg_len += rndis_msg_size;
packet->total_data_buflen = rndis_msg->msg_len;
packet->page_buf_cnt = init_page_array(rndis_msg, rndis_msg_size,
- skb, packet, &pb);
+ skb, packet, pb);
/* timestamp packet in software */
skb_tx_timestamp(skb);
- ret = netvsc_send(net_device_ctx, packet, rndis_msg, &pb, skb);
+ ret = netvsc_send(net_device_ctx, packet, rndis_msg, pb, skb);
if (likely(ret == 0))
return NETDEV_TX_OK;
diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index bf21ea92c743..d80e9e3f433e 100644
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -214,11 +214,11 @@ static void dump_rndis_message(struct hv_device *hv_dev,
static int rndis_filter_send_request(struct rndis_device *dev,
struct rndis_request *req)
{
- int ret;
struct hv_netvsc_packet *packet;
struct hv_page_buffer page_buf[2];
struct hv_page_buffer *pb = page_buf;
struct net_device_context *net_device_ctx = netdev_priv(dev->ndev);
+ int ret;
/* Setup the packet to send it */
packet = &req->pkt;
@@ -245,7 +245,7 @@ static int rndis_filter_send_request(struct rndis_device *dev,
}
rcu_read_lock_bh();
- ret = netvsc_send(net_device_ctx, packet, NULL, &pb, NULL);
+ ret = netvsc_send(net_device_ctx, packet, NULL, pb, NULL);
rcu_read_unlock_bh();
return ret;
--
2.11.0
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