diff options
| author | Stephen Hemminger <stephen@networkplumber.org> | 2017-12-12 16:48:38 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-12-13 15:57:39 -0500 |
| commit | 345ac08990b8365294f9756da806f357c239d758 (patch) | |
| tree | 5392199a2ee9c8a40615886e2745c802a8f1fed2 | |
| parent | 79cf1bae384cfc51b0b0773b3591794302af6ebd (diff) | |
| download | linux-345ac08990b8365294f9756da806f357c239d758.tar.bz2 | |
hv_netvsc: pass netvsc_device to receive callback
The netvsc_receive_callback function was using RCU to find the
appropriate underlying netvsc_device. Since calling function already
had that pointer, this was unnecessary.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/hyperv/hyperv_net.h | 1 | ||||
| -rw-r--r-- | drivers/net/hyperv/netvsc_drv.c | 14 | ||||
| -rw-r--r-- | drivers/net/hyperv/rndis_filter.c | 7 |
3 files changed, 8 insertions, 14 deletions
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h index 7e34eb53848b..b090d90114ca 100644 --- a/drivers/net/hyperv/hyperv_net.h +++ b/drivers/net/hyperv/hyperv_net.h @@ -202,6 +202,7 @@ int netvsc_send(struct net_device_context *ndc, void netvsc_linkstatus_callback(struct net_device *net, struct rndis_message *resp); int netvsc_recv_callback(struct net_device *net, + struct netvsc_device *nvdev, struct vmbus_channel *channel, void *data, u32 len, const struct ndis_tcp_ip_checksum_info *csum_info, diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index 3997c2d64427..5ab81611d6d9 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -739,34 +739,26 @@ static struct sk_buff *netvsc_alloc_recv_skb(struct net_device *net, * "wire" on the specified device. */ int netvsc_recv_callback(struct net_device *net, + struct netvsc_device *net_device, struct vmbus_channel *channel, void *data, u32 len, const struct ndis_tcp_ip_checksum_info *csum_info, const struct ndis_pkt_8021q_info *vlan) { struct net_device_context *net_device_ctx = netdev_priv(net); - struct netvsc_device *net_device; u16 q_idx = channel->offermsg.offer.sub_channel_index; - struct netvsc_channel *nvchan; + struct netvsc_channel *nvchan = &net_device->chan_table[q_idx]; struct sk_buff *skb; struct netvsc_stats *rx_stats; if (net->reg_state != NETREG_REGISTERED) return NVSP_STAT_FAIL; - rcu_read_lock(); - net_device = rcu_dereference(net_device_ctx->nvdev); - if (unlikely(!net_device)) - goto drop; - - nvchan = &net_device->chan_table[q_idx]; - /* Allocate a skb - TODO direct I/O to pages? */ skb = netvsc_alloc_recv_skb(net, &nvchan->napi, csum_info, vlan, data, len); if (unlikely(!skb)) { ++net_device_ctx->eth_stats.rx_no_memory; -drop: rcu_read_unlock(); return NVSP_STAT_FAIL; } @@ -790,8 +782,6 @@ drop: u64_stats_update_end(&rx_stats->syncp); napi_gro_receive(&nvchan->napi, skb); - rcu_read_unlock(); - return 0; } diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c index 901838b2bcc9..025110a19d4a 100644 --- a/drivers/net/hyperv/rndis_filter.c +++ b/drivers/net/hyperv/rndis_filter.c @@ -352,6 +352,7 @@ static inline void *rndis_get_ppi(struct rndis_packet *rpkt, u32 type) } static int rndis_filter_receive_data(struct net_device *ndev, + struct netvsc_device *nvdev, struct rndis_device *dev, struct rndis_message *msg, struct vmbus_channel *channel, @@ -388,7 +389,8 @@ static int rndis_filter_receive_data(struct net_device *ndev, */ data = (void *)((unsigned long)data + data_offset); csum_info = rndis_get_ppi(rndis_pkt, TCPIP_CHKSUM_PKTINFO); - return netvsc_recv_callback(ndev, channel, + + return netvsc_recv_callback(ndev, nvdev, channel, data, rndis_pkt->data_len, csum_info, vlan); } @@ -420,7 +422,8 @@ int rndis_filter_receive(struct net_device *ndev, switch (rndis_msg->ndis_msg_type) { case RNDIS_MSG_PACKET: - return rndis_filter_receive_data(ndev, rndis_dev, rndis_msg, + return rndis_filter_receive_data(ndev, net_dev, + rndis_dev, rndis_msg, channel, data, buflen); case RNDIS_MSG_INIT_C: case RNDIS_MSG_QUERY_C: |