Displaying 17 results from an estimated 17 matches for "rq_size".
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req_size
2017 Mar 29
1
[PATCH v2] virtio_net: fix support for small rings
...e full of these can fit at
+ * least one full packet?
+ * Logic below assumes the mergeable buffer header is used.
+ */
+static unsigned int mergeable_min_buf_len(struct virtnet_info *vi, struct virtqueue *vq)
+{
+ const unsigned int hdr_len = sizeof(struct virtio_net_hdr_mrg_rxbuf);
+ unsigned int rq_size = virtqueue_get_vring_size(vq);
+ unsigned int packet_len = vi->big_packets ? IP_MAX_MTU : vi->dev->max_mtu;
+ unsigned int buf_len = hdr_len + ETH_HLEN + VLAN_HLEN + packet_len;
+ unsigned int min_buf_len = DIV_ROUND_UP(buf_len, rq_size);
+
+ return max(min_buf_len, hdr_len);
+}
+
static...
2017 Mar 29
1
[PATCH v2] virtio_net: fix support for small rings
...e full of these can fit at
+ * least one full packet?
+ * Logic below assumes the mergeable buffer header is used.
+ */
+static unsigned int mergeable_min_buf_len(struct virtnet_info *vi, struct virtqueue *vq)
+{
+ const unsigned int hdr_len = sizeof(struct virtio_net_hdr_mrg_rxbuf);
+ unsigned int rq_size = virtqueue_get_vring_size(vq);
+ unsigned int packet_len = vi->big_packets ? IP_MAX_MTU : vi->dev->max_mtu;
+ unsigned int buf_len = hdr_len + ETH_HLEN + VLAN_HLEN + packet_len;
+ unsigned int min_buf_len = DIV_ROUND_UP(buf_len, rq_size);
+
+ return max(min_buf_len, hdr_len);
+}
+
static...
2017 Mar 29
1
[PATCH] virtio_net: fix support for small rings
...e full of these can fit at
+ * least one full packet?
+ * Logic below assumes the mergeable buffer header is used.
+ */
+static unsigned int mergeable_min_buf_len(struct virtnet_info *vi, struct virtqueue *vq)
+{
+ const unsigned int hdr_len = sizeof(struct virtio_net_hdr_mrg_rxbuf);
+ unsigned int rq_size = virtqueue_get_vring_size(vq);
+ unsigned int packet_len = vi->big_packets ? IP_MAX_MTU : vi->dev->max_mtu;
+ unsigned int buf_len = hdr_len + ETH_HLEN + VLAN_HLEN + packet_len;
+ unsigned int min_buf_len = DIV_ROUND_UP(buf_len, rq_size);
+
+ return max(min_buf_len, hdr_len);
+}
+
static...
2017 Mar 29
1
[PATCH] virtio_net: fix support for small rings
...e full of these can fit at
+ * least one full packet?
+ * Logic below assumes the mergeable buffer header is used.
+ */
+static unsigned int mergeable_min_buf_len(struct virtnet_info *vi, struct virtqueue *vq)
+{
+ const unsigned int hdr_len = sizeof(struct virtio_net_hdr_mrg_rxbuf);
+ unsigned int rq_size = virtqueue_get_vring_size(vq);
+ unsigned int packet_len = vi->big_packets ? IP_MAX_MTU : vi->dev->max_mtu;
+ unsigned int buf_len = hdr_len + ETH_HLEN + VLAN_HLEN + packet_len;
+ unsigned int min_buf_len = DIV_ROUND_UP(buf_len, rq_size);
+
+ return max(min_buf_len, hdr_len);
+}
+
static...
2014 Sep 18
3
[PATCH] blk-mq: Avoid race condition with uninitialized requests
This patch should fix the bug reported in https://lkml.org/lkml/2014/9/11/249.
Test is still pending.
David Hildenbrand (1):
blk-mq: Avoid race condition with uninitialized requests
block/blk-mq.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--
1.8.5.5
2014 Sep 18
3
[PATCH] blk-mq: Avoid race condition with uninitialized requests
This patch should fix the bug reported in https://lkml.org/lkml/2014/9/11/249.
Test is still pending.
David Hildenbrand (1):
blk-mq: Avoid race condition with uninitialized requests
block/blk-mq.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--
1.8.5.5
2017 Jun 01
4
[PATCH] virtio_net: lower limit on buffer size
...in_buf_len, PAGE_SIZE - hdr_len);
return ALIGN(len, L1_CACHE_BYTES);
}
@@ -2039,7 +2039,8 @@ static unsigned int mergeable_min_buf_len(struct virtnet_info *vi, struct virtqu
unsigned int buf_len = hdr_len + ETH_HLEN + VLAN_HLEN + packet_len;
unsigned int min_buf_len = DIV_ROUND_UP(buf_len, rq_size);
- return max(min_buf_len, hdr_len);
+ return max(max(min_buf_len, hdr_len) - hdr_len,
+ (unsigned int)GOOD_PACKET_LEN);
}
static int virtnet_find_vqs(struct virtnet_info *vi)
--
MST
2017 Jun 01
4
[PATCH] virtio_net: lower limit on buffer size
...in_buf_len, PAGE_SIZE - hdr_len);
return ALIGN(len, L1_CACHE_BYTES);
}
@@ -2039,7 +2039,8 @@ static unsigned int mergeable_min_buf_len(struct virtnet_info *vi, struct virtqu
unsigned int buf_len = hdr_len + ETH_HLEN + VLAN_HLEN + packet_len;
unsigned int min_buf_len = DIV_ROUND_UP(buf_len, rq_size);
- return max(min_buf_len, hdr_len);
+ return max(max(min_buf_len, hdr_len) - hdr_len,
+ (unsigned int)GOOD_PACKET_LEN);
}
static int virtnet_find_vqs(struct virtnet_info *vi)
--
MST
2014 Sep 17
3
blk-mq crash under KVM in multiqueue block code (with virtio-blk and ext4)
> >>> Does anyone have an idea?
> >>> The request itself is completely filled with cc
> >>
> >> That is very weird, the 'rq' is got from hctx->tags, and rq should be
> >> valid, and rq->q shouldn't have been changed even though it was
> >> double free or double allocation.
> >>
> >>> I am currently
2014 Sep 17
3
blk-mq crash under KVM in multiqueue block code (with virtio-blk and ext4)
> >>> Does anyone have an idea?
> >>> The request itself is completely filled with cc
> >>
> >> That is very weird, the 'rq' is got from hctx->tags, and rq should be
> >> valid, and rq->q shouldn't have been changed even though it was
> >> double free or double allocation.
> >>
> >>> I am currently
2014 Sep 18
0
[PATCH] blk-mq: Avoid race condition with uninitialized requests
...INFLIGHT)
atomic_dec(&hctx->nr_active);
+ rq->cmd_flags = 0;
clear_bit(REQ_ATOM_STARTED, &rq->atomic_flags);
blk_mq_put_tag(hctx, tag, &ctx->last_tag);
@@ -1404,6 +1404,8 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
left -= to_do * rq_size;
for (j = 0; j < to_do; j++) {
tags->rqs[i] = p;
+ tags->rqs[i]->atomic_flags = 0;
+ tags->rqs[i]->cmd_flags = 0;
if (set->ops->init_request) {
if (set->ops->init_request(set->driver_data,
tags->rqs[i], hctx_idx, i,
--
1.8.5.5
2017 Jun 02
1
[PATCH v2] virtio_net: lower limit on buffer size
...in_buf_len, PAGE_SIZE - hdr_len);
return ALIGN(len, L1_CACHE_BYTES);
}
@@ -2039,7 +2039,8 @@ static unsigned int mergeable_min_buf_len(struct virtnet_info *vi, struct virtqu
unsigned int buf_len = hdr_len + ETH_HLEN + VLAN_HLEN + packet_len;
unsigned int min_buf_len = DIV_ROUND_UP(buf_len, rq_size);
- return max(min_buf_len, hdr_len);
+ return max(max(min_buf_len, hdr_len) - hdr_len,
+ (unsigned int)GOOD_PACKET_LEN);
}
static int virtnet_find_vqs(struct virtnet_info *vi)
--
MST
2017 Jun 02
1
[PATCH v2] virtio_net: lower limit on buffer size
...in_buf_len, PAGE_SIZE - hdr_len);
return ALIGN(len, L1_CACHE_BYTES);
}
@@ -2039,7 +2039,8 @@ static unsigned int mergeable_min_buf_len(struct virtnet_info *vi, struct virtqu
unsigned int buf_len = hdr_len + ETH_HLEN + VLAN_HLEN + packet_len;
unsigned int min_buf_len = DIV_ROUND_UP(buf_len, rq_size);
- return max(min_buf_len, hdr_len);
+ return max(max(min_buf_len, hdr_len) - hdr_len,
+ (unsigned int)GOOD_PACKET_LEN);
}
static int virtnet_find_vqs(struct virtnet_info *vi)
--
MST
2014 Sep 22
1
[PATCH] blk-mq: Avoid race condition with uninitialized requests
...hctx->nr_active);
> + rq->cmd_flags = 0;
>
> clear_bit(REQ_ATOM_STARTED, &rq->atomic_flags);
> blk_mq_put_tag(hctx, tag, &ctx->last_tag);
> @@ -1404,6 +1404,8 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
> left -= to_do * rq_size;
> for (j = 0; j < to_do; j++) {
> tags->rqs[i] = p;
> + tags->rqs[i]->atomic_flags = 0;
> + tags->rqs[i]->cmd_flags = 0;
> if (set->ops->init_request) {
> if (set->ops->init_request(set->driver_data,
> tags->rqs[i]...
2014 Sep 22
1
[PATCH] blk-mq: Avoid race condition with uninitialized requests
...hctx->nr_active);
> + rq->cmd_flags = 0;
>
> clear_bit(REQ_ATOM_STARTED, &rq->atomic_flags);
> blk_mq_put_tag(hctx, tag, &ctx->last_tag);
> @@ -1404,6 +1404,8 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
> left -= to_do * rq_size;
> for (j = 0; j < to_do; j++) {
> tags->rqs[i] = p;
> + tags->rqs[i]->atomic_flags = 0;
> + tags->rqs[i]->cmd_flags = 0;
> if (set->ops->init_request) {
> if (set->ops->init_request(set->driver_data,
> tags->rqs[i]...
2014 Sep 17
2
blk-mq crash under KVM in multiqueue block code (with virtio-blk and ext4)
...>
> + /* uninitialized request */
> + if (!rq->q || rq->tag == -1)
> + return rq;
> +
> if (!is_flush_request(rq, tag))
> return rq;
>
> @@ -1401,6 +1405,12 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
> left -= to_do * rq_size;
> for (j = 0; j < to_do; j++) {
> tags->rqs[i] = p;
> +
> + /* Avoiding early access from timeout handler */
> + tags->rqs[i]->tag = -1;
> + tags->rqs[i]->q = NULL;
> + tags->rqs[i]->cmd_flags = 0;
> +
> if (set->ops->i...
2014 Sep 17
2
blk-mq crash under KVM in multiqueue block code (with virtio-blk and ext4)
...>
> + /* uninitialized request */
> + if (!rq->q || rq->tag == -1)
> + return rq;
> +
> if (!is_flush_request(rq, tag))
> return rq;
>
> @@ -1401,6 +1405,12 @@ static struct blk_mq_tags *blk_mq_init_rq_map(struct blk_mq_tag_set *set,
> left -= to_do * rq_size;
> for (j = 0; j < to_do; j++) {
> tags->rqs[i] = p;
> +
> + /* Avoiding early access from timeout handler */
> + tags->rqs[i]->tag = -1;
> + tags->rqs[i]->q = NULL;
> + tags->rqs[i]->cmd_flags = 0;
> +
> if (set->ops->i...