Displaying 20 results from an estimated 38 matches for "memcpy_toiovecend".
2015 Feb 04
2
[PATCH v3 17/18] vhost: don't bother copying iovecs in handle_rx(), kill memcpy_toiovecend()
...RUNC);
/* Userspace might have consumed the packet meanwhile:
@@ -643,18 +607,18 @@ static void handle_rx(struct vhost_net *net)
vhost_discard_vq_desc(vq, headcount);
continue;
}
+ /* Supply virtio_net_hdr if VHOST_NET_F_VIRTIO_NET_HDR */
if (unlikely(vhost_hlen) &&
- memcpy_toiovecend(nvq->hdr, (unsigned char *)&hdr, 0,
- vhost_hlen)) {
+ copy_to_iter(&hdr, sizeof(hdr), &fixup) != sizeof(hdr)) {
vq_err(vq, "Unable to write vnet_hdr at addr %p\n",
vq->iov->iov_base);
break;
}
- /* TODO: Should check and handle ch...
2015 Feb 04
2
[PATCH v3 17/18] vhost: don't bother copying iovecs in handle_rx(), kill memcpy_toiovecend()
...RUNC);
/* Userspace might have consumed the packet meanwhile:
@@ -643,18 +607,18 @@ static void handle_rx(struct vhost_net *net)
vhost_discard_vq_desc(vq, headcount);
continue;
}
+ /* Supply virtio_net_hdr if VHOST_NET_F_VIRTIO_NET_HDR */
if (unlikely(vhost_hlen) &&
- memcpy_toiovecend(nvq->hdr, (unsigned char *)&hdr, 0,
- vhost_hlen)) {
+ copy_to_iter(&hdr, sizeof(hdr), &fixup) != sizeof(hdr)) {
vq_err(vq, "Unable to write vnet_hdr at addr %p\n",
vq->iov->iov_base);
break;
}
- /* TODO: Should check and handle ch...
2010 May 17
2
[PATCH] [resend] fix non-mergeable buffers packet too large error handling
...index 309c570..c346304 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -361,13 +361,21 @@ static void handle_rx(struct vhost_net *net)
break;
}
/* TODO: Should check and handle checksum. */
- if (vhost_has_feature(&net->dev, VIRTIO_NET_F_MRG_RXBUF) &&
- memcpy_toiovecend(vq->hdr, (unsigned char *)&headcount,
- offsetof(typeof(hdr), num_buffers),
- sizeof hdr.num_buffers)) {
- vq_err(vq, "Failed num_buffers write");
+ if (vhost_has_feature(&net->dev, VIRTIO_NET_F_MRG_RXBUF)) {
+ if (memcpy_toiovecend(vq->hdr,
+...
2010 May 17
2
[PATCH] [resend] fix non-mergeable buffers packet too large error handling
...index 309c570..c346304 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -361,13 +361,21 @@ static void handle_rx(struct vhost_net *net)
break;
}
/* TODO: Should check and handle checksum. */
- if (vhost_has_feature(&net->dev, VIRTIO_NET_F_MRG_RXBUF) &&
- memcpy_toiovecend(vq->hdr, (unsigned char *)&headcount,
- offsetof(typeof(hdr), num_buffers),
- sizeof hdr.num_buffers)) {
- vq_err(vq, "Failed num_buffers write");
+ if (vhost_has_feature(&net->dev, VIRTIO_NET_F_MRG_RXBUF)) {
+ if (memcpy_toiovecend(vq->hdr,
+...
2015 Feb 03
2
[PATCH for-3.19] vhost/net: fix up num_buffers endian-ness
...d69..9484d56 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -650,8 +650,10 @@ static void handle_rx(struct vhost_net *net)
break;
}
/* TODO: Should check and handle checksum. */
+
+ hdr.num_buffers = cpu_to_vhost16(vq, headcount);
if (likely(mergeable) &&
- memcpy_toiovecend(nvq->hdr, (unsigned char *)&headcount,
+ memcpy_toiovecend(nvq->hdr, (void *)&hdr.num_buffers,
offsetof(typeof(hdr), num_buffers),
sizeof hdr.num_buffers)) {
vq_err(vq, "Failed num_buffers write");
--
MST
2015 Feb 03
2
[PATCH for-3.19] vhost/net: fix up num_buffers endian-ness
...d69..9484d56 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -650,8 +650,10 @@ static void handle_rx(struct vhost_net *net)
break;
}
/* TODO: Should check and handle checksum. */
+
+ hdr.num_buffers = cpu_to_vhost16(vq, headcount);
if (likely(mergeable) &&
- memcpy_toiovecend(nvq->hdr, (unsigned char *)&headcount,
+ memcpy_toiovecend(nvq->hdr, (void *)&hdr.num_buffers,
offsetof(typeof(hdr), num_buffers),
sizeof hdr.num_buffers)) {
vq_err(vq, "Failed num_buffers write");
--
MST
2015 Feb 15
1
[PATCH net] vhost_net: fix wrong iter offset when setting number of buffers
In commit ba7438aed924 ("vhost: don't bother copying iovecs in
handle_rx(), kill memcpy_toiovecend()"), we advance iov iter fixup
sizeof(struct virtio_net_hdr) bytes and fill the number of buffers
after doing the socket recvmsg(). This work well but was broken after
commit 6e03f896b52c ("Merge
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net") which tries
to advance sizeof(...
2015 Feb 15
1
[PATCH net] vhost_net: fix wrong iter offset when setting number of buffers
In commit ba7438aed924 ("vhost: don't bother copying iovecs in
handle_rx(), kill memcpy_toiovecend()"), we advance iov iter fixup
sizeof(struct virtio_net_hdr) bytes and fill the number of buffers
after doing the socket recvmsg(). This work well but was broken after
commit 6e03f896b52c ("Merge
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net") which tries
to advance sizeof(...
2015 Feb 04
1
[PATCH v3 15/18] vhost: switch vhost get_indirect() to iov_iter, kill memcpy_fromiovec()
...*csum, struct iov_iter *i);
size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
-int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len);
int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov,
int offset, int len);
int memcpy_toiovecend(const struct iovec *v, unsigned char *kdata,
diff --git a/lib/iovec.c b/lib/iovec.c
index 2d99cb4..4a90875 100644
--- a/lib/iovec.c
+++ b/lib/iovec.c
@@ -3,31 +3,6 @@
#include <linux/uio.h>
/*
- * Copy iovec to kernel. Returns -EFAULT on error.
- *
- * Note: this modifies the original iov...
2015 Feb 04
1
[PATCH v3 15/18] vhost: switch vhost get_indirect() to iov_iter, kill memcpy_fromiovec()
...*csum, struct iov_iter *i);
size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i);
-int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len);
int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov,
int offset, int len);
int memcpy_toiovecend(const struct iovec *v, unsigned char *kdata,
diff --git a/lib/iovec.c b/lib/iovec.c
index 2d99cb4..4a90875 100644
--- a/lib/iovec.c
+++ b/lib/iovec.c
@@ -3,31 +3,6 @@
#include <linux/uio.h>
/*
- * Copy iovec to kernel. Returns -EFAULT on error.
- *
- * Note: this modifies the original iov...
2011 Jun 10
1
[PATCH] virtio_net: introduce VIRTIO_NET_HDR_F_DATA_VALID
...,
gso.flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
gso.csum_start = skb_checksum_start_offset(skb);
gso.csum_offset = skb->csum_offset;
+ } else if (skb->ip_summed == CHECKSUM_UNNECESSARY) {
+ gso.flags = VIRTIO_NET_HDR_F_DATA_VALID;
} /* else everything is zero */
if (unlikely(memcpy_toiovecend(iv, (void *)&gso, total,
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index f685324..be3686a 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -274,6 +274,8 @@ static void receive_buf(struct net_device *dev, void *buf, unsigned int len)
hdr->...
2011 Jun 10
1
[PATCH] virtio_net: introduce VIRTIO_NET_HDR_F_DATA_VALID
...,
gso.flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;
gso.csum_start = skb_checksum_start_offset(skb);
gso.csum_offset = skb->csum_offset;
+ } else if (skb->ip_summed == CHECKSUM_UNNECESSARY) {
+ gso.flags = VIRTIO_NET_HDR_F_DATA_VALID;
} /* else everything is zero */
if (unlikely(memcpy_toiovecend(iv, (void *)&gso, total,
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index f685324..be3686a 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -274,6 +274,8 @@ static void receive_buf(struct net_device *dev, void *buf, unsigned int len)
hdr->...
2010 Apr 28
6
[PATCHv7] add mergeable buffers support to vhost_net
...t_discard_desc(vq, headcount);
continue;
}
len = err;
- err = memcpy_toiovec(vq->hdr, (unsigned char *)&hdr, hdr_size);
- if (err) {
- vq_err(vq, "Unable to write vnet_hdr at addr %p: %d\n",
- vq->iov->iov_base, err);
+ if (vhost_hlen &&
+ memcpy_toiovecend(vq->hdr, (unsigned char *)&hdr, 0,
+ vhost_hlen)) {
+ vq_err(vq, "Unable to write vnet_hdr at addr %p\n",
+ vq->iov->iov_base);
break;
}
- len += hdr_size;
- vhost_add_used_and_signal(&net->dev, vq, head, len);
+ /* TODO: Should check and...
2010 Apr 28
6
[PATCHv7] add mergeable buffers support to vhost_net
...t_discard_desc(vq, headcount);
continue;
}
len = err;
- err = memcpy_toiovec(vq->hdr, (unsigned char *)&hdr, hdr_size);
- if (err) {
- vq_err(vq, "Unable to write vnet_hdr at addr %p: %d\n",
- vq->iov->iov_base, err);
+ if (vhost_hlen &&
+ memcpy_toiovecend(vq->hdr, (unsigned char *)&hdr, 0,
+ vhost_hlen)) {
+ vq_err(vq, "Unable to write vnet_hdr at addr %p\n",
+ vq->iov->iov_base);
break;
}
- len += hdr_size;
- vhost_add_used_and_signal(&net->dev, vq, head, len);
+ /* TODO: Should check and...
2011 Dec 05
8
[net-next RFC PATCH 0/5] Series short description
multiple queue virtio-net: flow steering through host/guest cooperation
Hello all:
This is a rough series adds the guest/host cooperation of flow
steering support based on Krish Kumar's multiple queue virtio-net
driver patch 3/3 (http://lwn.net/Articles/467283/).
This idea is simple, the backend pass the rxhash to the guest and
guest would tell the backend the hash to queue mapping when
2011 Dec 05
8
[net-next RFC PATCH 0/5] Series short description
multiple queue virtio-net: flow steering through host/guest cooperation
Hello all:
This is a rough series adds the guest/host cooperation of flow
steering support based on Krish Kumar's multiple queue virtio-net
driver patch 3/3 (http://lwn.net/Articles/467283/).
This idea is simple, the backend pass the rxhash to the guest and
guest would tell the backend the hash to queue mapping when
2012 Nov 19
1
[PATCH] vhost-blk: Add vhost-blk support v5
...um;
+
+ blk->reqs = kmalloc(sizeof(struct vhost_blk_req) * blk->reqs_nr,
+ GFP_KERNEL);
+ if (!blk->reqs)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static inline int vhost_blk_set_status(struct vhost_blk_req *req, u8 status)
+{
+ struct vhost_blk *blk = req->blk;
+ int ret;
+
+ ret = memcpy_toiovecend(req->status, &status, 0, sizeof(status));
+
+ if (ret) {
+ vq_err(&blk->vq, "Failed to write status\n");
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+static void vhost_blk_enable_vq(struct vhost_blk *blk,
+ struct vhost_virtqueue *vq)
+{
+ wake_up_process(blk->host_kick...
2012 Nov 19
1
[PATCH] vhost-blk: Add vhost-blk support v5
...um;
+
+ blk->reqs = kmalloc(sizeof(struct vhost_blk_req) * blk->reqs_nr,
+ GFP_KERNEL);
+ if (!blk->reqs)
+ return -ENOMEM;
+
+ return 0;
+}
+
+static inline int vhost_blk_set_status(struct vhost_blk_req *req, u8 status)
+{
+ struct vhost_blk *blk = req->blk;
+ int ret;
+
+ ret = memcpy_toiovecend(req->status, &status, 0, sizeof(status));
+
+ if (ret) {
+ vq_err(&blk->vq, "Failed to write status\n");
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+static void vhost_blk_enable_vq(struct vhost_blk *blk,
+ struct vhost_virtqueue *vq)
+{
+ wake_up_process(blk->host_kick...
2011 Jan 17
11
[PATCH 1/3] vhost-net: check the support of mergeable buffer outside the receive loop
...->sk))) {
sock_len += sock_hlen;
@@ -474,7 +475,7 @@ static void handle_rx_mergeable(struct vhost_net *net)
break;
}
/* TODO: Should check and handle checksum. */
- if (vhost_has_feature(&net->dev, VIRTIO_NET_F_MRG_RXBUF) &&
+ if (likely(mergeable) &&
memcpy_toiovecend(vq->hdr, (unsigned char *)&headcount,
offsetof(typeof(hdr), num_buffers),
sizeof hdr.num_buffers)) {
2011 Jan 17
11
[PATCH 1/3] vhost-net: check the support of mergeable buffer outside the receive loop
...->sk))) {
sock_len += sock_hlen;
@@ -474,7 +475,7 @@ static void handle_rx_mergeable(struct vhost_net *net)
break;
}
/* TODO: Should check and handle checksum. */
- if (vhost_has_feature(&net->dev, VIRTIO_NET_F_MRG_RXBUF) &&
+ if (likely(mergeable) &&
memcpy_toiovecend(vq->hdr, (unsigned char *)&headcount,
offsetof(typeof(hdr), num_buffers),
sizeof hdr.num_buffers)) {