search for: f8cdcfa392c3

...for several things > like bh and rcu stuffs. > > Signed-off-by: Jason Wang <jasowang at redhat.com> True... > --- > drivers/net/tun.c | 9 ++++++--- > 1 file changed, 6 insertions(+), 3 deletions(-) > > diff --git a/drivers/net/tun.c b/drivers/net/tun.c > index f8cdcfa392c3..389aa0727cc6 100644 > --- a/drivers/net/tun.c > +++ b/drivers/net/tun.c > @@ -1675,10 +1675,12 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun, > * of xdp_prog above, this should be rare and for simplicity > * we do XDP on skb in case the headroom is not enough....

...by: Jason Wang <jasowang at redhat.com> I see some issues with this one. > --- > drivers/net/tun.c | 37 ++++++++++++++++--------------------- > 1 file changed, 16 insertions(+), 21 deletions(-) > > diff --git a/drivers/net/tun.c b/drivers/net/tun.c > index 372caf7d67d9..f8cdcfa392c3 100644 > --- a/drivers/net/tun.c > +++ b/drivers/net/tun.c > @@ -1642,7 +1642,7 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun, > int len, int *skb_xdp) > { > struct page_frag *alloc_frag = &current->task_frag; > - struct sk_buff *skb; > +...

...by: Jason Wang <jasowang at redhat.com> I see some issues with this one. > --- > drivers/net/tun.c | 37 ++++++++++++++++--------------------- > 1 file changed, 16 insertions(+), 21 deletions(-) > > diff --git a/drivers/net/tun.c b/drivers/net/tun.c > index 372caf7d67d9..f8cdcfa392c3 100644 > --- a/drivers/net/tun.c > +++ b/drivers/net/tun.c > @@ -1642,7 +1642,7 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun, > int len, int *skb_xdp) > { > struct page_frag *alloc_frag = &current->task_frag; > - struct sk_buff *skb; > +...

...ors). This will be used for factoring out XDP logic. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/net/tun.c | 37 ++++++++++++++++--------------------- 1 file changed, 16 insertions(+), 21 deletions(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 372caf7d67d9..f8cdcfa392c3 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1642,7 +1642,7 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun, int len, int *skb_xdp) { struct page_frag *alloc_frag = &current->task_frag; - struct sk_buff *skb; + struct sk_buff *skb = NULL; struct bp...

...'re sure not to go native XDP, there's no need for several things like bh and rcu stuffs. Signed-off-by: Jason Wang <jasowang at redhat.com> --- drivers/net/tun.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index f8cdcfa392c3..389aa0727cc6 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1675,10 +1675,12 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun, * of xdp_prog above, this should be rare and for simplicity * we do XDP on skb in case the headroom is not enough. */ - if (hdr->gso_...

...dhat.com> > I see some issues with this one. > >> --- >> drivers/net/tun.c | 37 ++++++++++++++++--------------------- >> 1 file changed, 16 insertions(+), 21 deletions(-) >> >> diff --git a/drivers/net/tun.c b/drivers/net/tun.c >> index 372caf7d67d9..f8cdcfa392c3 100644 >> --- a/drivers/net/tun.c >> +++ b/drivers/net/tun.c >> @@ -1642,7 +1642,7 @@ static struct sk_buff *tun_build_skb(struct tun_struct *tun, >> int len, int *skb_xdp) >> { >> struct page_frag *alloc_frag = &current->task_frag; >&gt...

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