diff options
Diffstat (limited to 'drivers/hv/channel.c')
| -rw-r--r-- | drivers/hv/channel.c | 42 |
1 files changed, 23 insertions, 19 deletions
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index 69ea36f07b4d..602ca86a6488 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -27,6 +27,7 @@ #include <linux/slab.h> #include <linux/module.h> #include <linux/hyperv.h> +#include <linux/uio.h> #include "hyperv_vmbus.h" @@ -554,14 +555,14 @@ EXPORT_SYMBOL_GPL(vmbus_close); * * Mainly used by Hyper-V drivers. */ -int vmbus_sendpacket(struct vmbus_channel *channel, const void *buffer, +int vmbus_sendpacket(struct vmbus_channel *channel, void *buffer, u32 bufferlen, u64 requestid, enum vmbus_packet_type type, u32 flags) { struct vmpacket_descriptor desc; u32 packetlen = sizeof(struct vmpacket_descriptor) + bufferlen; u32 packetlen_aligned = ALIGN(packetlen, sizeof(u64)); - struct scatterlist bufferlist[3]; + struct kvec bufferlist[3]; u64 aligned_data = 0; int ret; bool signal = false; @@ -575,11 +576,12 @@ int vmbus_sendpacket(struct vmbus_channel *channel, const void *buffer, desc.len8 = (u16)(packetlen_aligned >> 3); desc.trans_id = requestid; - sg_init_table(bufferlist, 3); - sg_set_buf(&bufferlist[0], &desc, sizeof(struct vmpacket_descriptor)); - sg_set_buf(&bufferlist[1], buffer, bufferlen); - sg_set_buf(&bufferlist[2], &aligned_data, - packetlen_aligned - packetlen); + bufferlist[0].iov_base = &desc; + bufferlist[0].iov_len = sizeof(struct vmpacket_descriptor); + bufferlist[1].iov_base = buffer; + bufferlist[1].iov_len = bufferlen; + bufferlist[2].iov_base = &aligned_data; + bufferlist[2].iov_len = (packetlen_aligned - packetlen); ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3, &signal); @@ -605,7 +607,7 @@ int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel, u32 descsize; u32 packetlen; u32 packetlen_aligned; - struct scatterlist bufferlist[3]; + struct kvec bufferlist[3]; u64 aligned_data = 0; bool signal = false; @@ -637,11 +639,12 @@ int vmbus_sendpacket_pagebuffer(struct vmbus_channel *channel, desc.range[i].pfn = pagebuffers[i].pfn; } - sg_init_table(bufferlist, 3); - sg_set_buf(&bufferlist[0], &desc, descsize); - sg_set_buf(&bufferlist[1], buffer, bufferlen); - sg_set_buf(&bufferlist[2], &aligned_data, - packetlen_aligned - packetlen); + bufferlist[0].iov_base = &desc; + bufferlist[0].iov_len = descsize; + bufferlist[1].iov_base = buffer; + bufferlist[1].iov_len = bufferlen; + bufferlist[2].iov_base = &aligned_data; + bufferlist[2].iov_len = (packetlen_aligned - packetlen); ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3, &signal); @@ -665,7 +668,7 @@ int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel, u32 descsize; u32 packetlen; u32 packetlen_aligned; - struct scatterlist bufferlist[3]; + struct kvec bufferlist[3]; u64 aligned_data = 0; bool signal = false; u32 pfncount = NUM_PAGES_SPANNED(multi_pagebuffer->offset, @@ -700,11 +703,12 @@ int vmbus_sendpacket_multipagebuffer(struct vmbus_channel *channel, memcpy(desc.range.pfn_array, multi_pagebuffer->pfn_array, pfncount * sizeof(u64)); - sg_init_table(bufferlist, 3); - sg_set_buf(&bufferlist[0], &desc, descsize); - sg_set_buf(&bufferlist[1], buffer, bufferlen); - sg_set_buf(&bufferlist[2], &aligned_data, - packetlen_aligned - packetlen); + bufferlist[0].iov_base = &desc; + bufferlist[0].iov_len = descsize; + bufferlist[1].iov_base = buffer; + bufferlist[1].iov_len = bufferlen; + bufferlist[2].iov_base = &aligned_data; + bufferlist[2].iov_len = (packetlen_aligned - packetlen); ret = hv_ringbuffer_write(&channel->outbound, bufferlist, 3, &signal); |