search for: dd4e0a301635

...eft out this error return so it leads to some use after free bugs later on. Fixes: 0a0be13b8fe2 ("vhost_net: batch submitting XDP buffers to underlayer sockets") Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com> diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index dd4e0a301635..1bff6bc8161a 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -1244,6 +1244,7 @@ static int vhost_net_open(struct inode *inode, struct file *f) kfree(vqs); kvfree(n); kfree(queue); + return -ENOMEM; } n->vqs[VHOST_NET_VQ_TX].xdp = xdp;

...0%/ +1% 65535/ 8/ 0%/ +3% Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/vhost/net.c | 174 ++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 161 insertions(+), 13 deletions(-) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index fb01ce6d981c..dd4e0a301635 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -116,6 +116,8 @@ struct vhost_net_virtqueue { * For RX, number of batched heads */ int done_idx; + /* Number of XDP frames batched */ + int batched_xdp; /* an array of userspace buffers info */ struct ubuf_info *ubuf_info;...

Hi all: This series tries to batch submitting packets to underlayer socket through msg_control during sendmsg(). This is done by: 1) Doing userspace copy inside vhost_net 2) Build XDP buff 3) Batch at most 64 (VHOST_NET_BATCH) XDP buffs and submit them once through msg_control during sendmsg(). 4) Underlayer sockets can use XDP buffs directly when XDP is enalbed, or build skb based on XDP

Hi all: This series tries to batch submitting packets to underlayer socket through msg_control during sendmsg(). This is done by: 1) Doing userspace copy inside vhost_net 2) Build XDP buff 3) Batch at most 64 (VHOST_NET_BATCH) XDP buffs and submit them once through msg_control during sendmsg(). 4) Underlayer sockets can use XDP buffs directly when XDP is enalbed, or build skb based on XDP