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hv_netvsc: Define a macro RNDIS_AND_PPI_SIZE

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The sum of RNDIS msg and PPI struct sizes is used in multiple places, so we define
a macro for them.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Haiyang Zhang 2015-04-06 15:22:53 -07:00 committed by David S. Miller
parent 0d158852a8
commit 721514222d
2 changed files with 9 additions and 12 deletions
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6
drivers/net/hyperv/hyperv_net.h
View file

@ -958,6 +958,10 @@ struct ndis_tcp_lso_info {
#define NDIS_HASH_PPI_SIZE (sizeof(struct rndis_per_packet_info) + \
sizeof(u32))
/* Total size of all PPI data */
#define NDIS_ALL_PPI_SIZE (NDIS_VLAN_PPI_SIZE + NDIS_CSUM_PPI_SIZE + \
NDIS_LSO_PPI_SIZE + NDIS_HASH_PPI_SIZE)
/* Format of Information buffer passed in a SetRequest for the OID */
/* OID_GEN_RNDIS_CONFIG_PARAMETER. */
struct rndis_config_parameter_info {
@ -1170,6 +1174,8 @@ struct rndis_message {
#define RNDIS_HEADER_SIZE (sizeof(struct rndis_message) - \
sizeof(union rndis_message_container))
#define RNDIS_AND_PPI_SIZE (sizeof(struct rndis_message) + NDIS_ALL_PPI_SIZE)
#define NDIS_PACKET_TYPE_DIRECTED 0x00000001
#define NDIS_PACKET_TYPE_MULTICAST 0x00000002
#define NDIS_PACKET_TYPE_ALL_MULTICAST 0x00000004

15
drivers/net/hyperv/netvsc_drv.c
View file

@ -401,10 +401,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
return NETDEV_TX_OK;
}
pkt_sz = sizeof(struct hv_netvsc_packet) +
sizeof(struct rndis_message) +
NDIS_VLAN_PPI_SIZE + NDIS_CSUM_PPI_SIZE +
NDIS_LSO_PPI_SIZE + NDIS_HASH_PPI_SIZE;
pkt_sz = sizeof(struct hv_netvsc_packet) + RNDIS_AND_PPI_SIZE;
if (head_room < pkt_sz) {
packet = kmalloc(pkt_sz, GFP_ATOMIC);
@ -436,11 +433,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
packet->rndis_msg = (struct rndis_message *)((unsigned long)packet +
sizeof(struct hv_netvsc_packet));
memset(packet->rndis_msg, 0, sizeof(struct rndis_message) +
NDIS_VLAN_PPI_SIZE +
NDIS_CSUM_PPI_SIZE +
NDIS_LSO_PPI_SIZE +
NDIS_HASH_PPI_SIZE);
memset(packet->rndis_msg, 0, RNDIS_AND_PPI_SIZE);
/* Set the completion routine */
packet->send_completion = netvsc_xmit_completion;
@ -872,9 +865,7 @@ static int netvsc_probe(struct hv_device *dev,
return -ENOMEM;
max_needed_headroom = sizeof(struct hv_netvsc_packet) +
sizeof(struct rndis_message) +
NDIS_VLAN_PPI_SIZE + NDIS_CSUM_PPI_SIZE +
NDIS_LSO_PPI_SIZE + NDIS_HASH_PPI_SIZE;
RNDIS_AND_PPI_SIZE;
netif_carrier_off(net);