[PATCH net-next V2 02/17] hv_netvsc: Rearrange the hv_negtvsc_packet to be space efficient

[K. Y. Srinivasan]

Rearrange the elements of struct hv_negtvsc_packet for optimal layout -
eliminate unnecessary padding.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
---
 drivers/net/hyperv/hyperv_net.h |   18 ++
 1 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index 972e562..7435673 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -128,32 +128,34 @@ struct ndis_tcp_ip_checksum_info;
 struct hv_netvsc_packet {
/* Bookkeeping stuff */
u8 status;
-
u8 is_data_pkt;
u8 xmit_more; /* from skb */
u8 cp_partial; /* partial copy into send buffer */
 
-   u16 vlan_tci;
+   u8 rmsg_size; /* RNDIS header and PPI size */
+   u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */
+   u8 page_buf_cnt;
+   u8 pad0;
 
+   u16 vlan_tci;
u16 q_idx;
+   u32 send_buf_index;
+
+   u32 total_data_buflen;
+   u32 pad1;
+
struct vmbus_channel *channel;
 
u64 send_completion_tid;
void *send_completion_ctx;
void (*send_completion)(void *context);
 
-   u32 send_buf_index;
 
/* This points to the memory after page_buf */
struct rndis_message *rndis_msg;
 
-   u8 rmsg_size; /* RNDIS header and PPI size */
-   u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */
-
-   u32 total_data_buflen;
/* Points to the send/receive buffer where the ethernet frame is */
void *data;
-   u8 page_buf_cnt;
struct hv_page_buffer *page_buf;
 };
 
-- 
1.7.4.1

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[PATCH net-next V2 02/17] hv_netvsc: Rearrange the hv_negtvsc_packet to be space efficient

[K. Y. Srinivasan]

Rearrange the elements of struct hv_negtvsc_packet for optimal layout -
eliminate unnecessary padding.

Signed-off-by: K. Y. Srinivasan 
Reviewed-by: Haiyang Zhang 
---
 drivers/net/hyperv/hyperv_net.h |   18 ++
 1 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index 972e562..7435673 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -128,32 +128,34 @@ struct ndis_tcp_ip_checksum_info;
 struct hv_netvsc_packet {
/* Bookkeeping stuff */
u8 status;
-
u8 is_data_pkt;
u8 xmit_more; /* from skb */
u8 cp_partial; /* partial copy into send buffer */
 
-   u16 vlan_tci;
+   u8 rmsg_size; /* RNDIS header and PPI size */
+   u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */
+   u8 page_buf_cnt;
+   u8 pad0;
 
+   u16 vlan_tci;
u16 q_idx;
+   u32 send_buf_index;
+
+   u32 total_data_buflen;
+   u32 pad1;
+
struct vmbus_channel *channel;
 
u64 send_completion_tid;
void *send_completion_ctx;
void (*send_completion)(void *context);
 
-   u32 send_buf_index;
 
/* This points to the memory after page_buf */
struct rndis_message *rndis_msg;
 
-   u8 rmsg_size; /* RNDIS header and PPI size */
-   u8 rmsg_pgcnt; /* page count of RNDIS header and PPI */
-
-   u32 total_data_buflen;
/* Points to the send/receive buffer where the ethernet frame is */
void *data;
-   u8 page_buf_cnt;
struct hv_page_buffer *page_buf;
 };
 
-- 
1.7.4.1

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