search for: tsov4

...2 /* Dynamic offload configuration. */ > #define VIRTIO_NET_F_MTU 3 /* Initial MTU advice */ > +#define VIRTIO_NET_F_SCTP_CSUM 4 /* SCTP checksum offload support */ > #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ > #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ > #define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ Is this a guest or a host checksum? We should differenciate between the two. > @@ -101,6 +102,7 @@ struct virtio_net_config { > struct virtio_net_hdr_v1 { > #define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 /* Use csu...

...2 /* Dynamic offload configuration. */ > #define VIRTIO_NET_F_MTU 3 /* Initial MTU advice */ > +#define VIRTIO_NET_F_SCTP_CSUM 4 /* SCTP checksum offload support */ > #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ > #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ > #define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ Is this a guest or a host checksum? We should differenciate between the two. > @@ -101,6 +102,7 @@ struct virtio_net_config { > struct virtio_net_hdr_v1 { > #define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 /* Use csu...

...est handles pkts w/ partial csum */ > +#define VIRTIO_NET_F_CTRL_COALESCE 3 /* Set coalescing */ > #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ > #define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ > #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ > @@ -202,4 +203,15 @@ struct virtio_net_ctrl_mq { > #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 > #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 > > +struct virtio_net_ctrl_coalesce { > + __u32 coalesce_usecs; > + __u32 max_coalesced_frames; > +}; &...

...est handles pkts w/ partial csum */ > +#define VIRTIO_NET_F_CTRL_COALESCE 3 /* Set coalescing */ > #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ > #define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ > #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ > @@ -202,4 +203,15 @@ struct virtio_net_ctrl_mq { > #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 > #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 > > +struct virtio_net_ctrl_coalesce { > + __u32 coalesce_usecs; > + __u32 max_coalesced_frames; > +}; &...

Herbert tells me that returning NETDEV_TX_BUSY from hard_start_xmit is seen as a poor thing to do; we should cache the packet and stop the queue. Signed-off-by: Rusty Russell <rusty at rustcorp.com.au> --- drivers/net/virtio_net.c | 58 ++++++++++++++++++++++++++++++++--------------- 1 file changed, 40 insertions(+), 18 deletions(-) diff -r 26ba2dd67f46 drivers/net/virtio_net.c ---

Herbert tells me that returning NETDEV_TX_BUSY from hard_start_xmit is seen as a poor thing to do; we should cache the packet and stop the queue. Signed-off-by: Rusty Russell <rusty at rustcorp.com.au> --- drivers/net/virtio_net.c | 58 ++++++++++++++++++++++++++++++++--------------- 1 file changed, 40 insertions(+), 18 deletions(-) diff -r 26ba2dd67f46 drivers/net/virtio_net.c ---

...*/ > >> #define VIRTIO_NET_F_MTU 3 /* Initial MTU advice */ > >> +#define VIRTIO_NET_F_SCTP_CSUM 4 /* SCTP checksum offload support */ > >> #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ > >> #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ > >> #define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ > > > > Is this a guest or a host checksum? We should differenciate between the > > two. > > I suppose this is HOST checksum, since it behaves like VIRTIO_NET_F_CSUM only for > SCTP...

...s pkts w/ partial csum */ #define VIRTIO_NET_F_GUEST_CSUM 1 /* Guest handles pkts w/ partial csum */ +#define VIRTIO_NET_F_CTRL_GUEST_OFFLOADS 2 /* Dynamic offload configuration. */ #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ #define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ @@ -226,4 +227,19 @@ struct virtio_net_ctrl_mq { #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 +/* + * Control network offloads + * + * Reconfigures the network...

..._CSUM 1 /* Guest handles pkts w/ partial csum */ #define VIRTIO_NET_F_CTRL_GUEST_OFFLOADS 2 /* Dynamic offload configuration. */ +#define VIRTIO_NET_F_MTU 3 /* Initial MTU advice */ #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ #define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ @@ -55,7 +56,6 @@ #define VIRTIO_NET_F_MQ 22 /* Device supports Receive Flow * Steering */ #define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */ -#define VIRTIO_NET_F_MTU 25 /* Initial MTU advice */ #ifndef...

...s pkts w/ partial csum */ #define VIRTIO_NET_F_GUEST_CSUM 1 /* Guest handles pkts w/ partial csum */ +#define VIRTIO_NET_F_CTRL_GUEST_OFFLOADS 2 /* Dynamic offload configuration. */ #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ #define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ @@ -226,4 +227,19 @@ struct virtio_net_ctrl_mq { #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 +/* + * Control network offloads + * + * Reconfigures the network...

..._CSUM 1 /* Guest handles pkts w/ partial csum */ #define VIRTIO_NET_F_CTRL_GUEST_OFFLOADS 2 /* Dynamic offload configuration. */ +#define VIRTIO_NET_F_MTU 3 /* Initial MTU advice */ #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ #define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ @@ -55,7 +56,6 @@ #define VIRTIO_NET_F_MQ 22 /* Device supports Receive Flow * Steering */ #define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */ -#define VIRTIO_NET_F_MTU 25 /* Initial MTU advice */ #ifndef...

Now that we have SCTP offload capabilities in the kernel, we can add them to virtio as well. First step is SCTP checksum. We need a new freature in virtio to negotiate this support since SCTP is excluded with the stardard checksum and requires a little bit extra. This series proposes VIRTIO_NET_F_SCTP_CSUM feature bit. As the "little bit extra", the kernel uses a new bit in the skb

...CTRL_GUEST_OFFLOADS 2 /* Dynamic offload configuration. */ #define VIRTIO_NET_F_MTU 3 /* Initial MTU advice */ +#define VIRTIO_NET_F_SCTP_CSUM 4 /* SCTP checksum offload support */ #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ #define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ @@ -101,6 +102,7 @@ struct virtio_net_config { struct virtio_net_hdr_v1 { #define VIRTIO_NET_HDR_F_NEEDS_CSUM 1 /* Use csum_start, csum_offset */ #define VIRTIO_NET_HDR_F_DATA_VALID 2 /* Csum is valid */ +#define VIRTIO_N...

...F_GUEST_CSUM 1 /* Guest handles pkts w/ partial csum */ +#define VIRTIO_NET_F_CTRL_COALESCE 3 /* Set coalescing */ #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ #define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ @@ -202,4 +203,15 @@ struct virtio_net_ctrl_mq { #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 +struct virtio_net_ctrl_coalesce { + __u32 coalesce_usecs; + __u32 max_coalesced_frames; +}; + +#define VIRTIO_NET_CTRL_COALESCE 6 + #...

...F_GUEST_CSUM 1 /* Guest handles pkts w/ partial csum */ +#define VIRTIO_NET_F_CTRL_COALESCE 3 /* Set coalescing */ #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ #define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ @@ -202,4 +203,15 @@ struct virtio_net_ctrl_mq { #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 +struct virtio_net_ctrl_coalesce { + __u32 coalesce_usecs; + __u32 max_coalesced_frames; +}; + +#define VIRTIO_NET_CTRL_COALESCE 6 + #...

...load configuration. */ >> #define VIRTIO_NET_F_MTU 3 /* Initial MTU advice */ >> +#define VIRTIO_NET_F_SCTP_CSUM 4 /* SCTP checksum offload support */ >> #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ >> #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ >> #define VIRTIO_NET_F_GUEST_TSO6 8 /* Guest can handle TSOv6 in. */ > > Is this a guest or a host checksum? We should differenciate between the > two. I suppose this is HOST checksum, since it behaves like VIRTIO_NET_F_CSUM only for SCTP. I couldn't find the use for...

...partial csum */ > > +#define VIRTIO_NET_F_CTRL_COALESCE 3 /* Set coalescing */ > > #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ > > #define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ > > #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ > > @@ -202,4 +203,15 @@ struct virtio_net_ctrl_mq { > > #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 > > #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 > > > > +struct virtio_net_ctrl_coalesce { > > + __u32 coalesce_usecs; > > + __u...

...partial csum */ > > +#define VIRTIO_NET_F_CTRL_COALESCE 3 /* Set coalescing */ > > #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ > > #define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ > > #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ > > @@ -202,4 +203,15 @@ struct virtio_net_ctrl_mq { > > #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 > > #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 > > > > +struct virtio_net_ctrl_coalesce { > > + __u32 coalesce_usecs; > > + __u...

...gt;> csum */ >> +#define VIRTIO_NET_F_CTRL_COALESCE 3 /* Set coalescing */ >> #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ >> #define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ >> #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ >> @@ -202,4 +203,15 @@ struct virtio_net_ctrl_mq { >> #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 >> #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 >> >> +struct virtio_net_ctrl_coalesce { >> + __u32 coalesce_usecs; >> + __u...

...gt;> csum */ >> +#define VIRTIO_NET_F_CTRL_COALESCE 3 /* Set coalescing */ >> #define VIRTIO_NET_F_MAC 5 /* Host has given MAC address. */ >> #define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */ >> #define VIRTIO_NET_F_GUEST_TSO4 7 /* Guest can handle TSOv4 in. */ >> @@ -202,4 +203,15 @@ struct virtio_net_ctrl_mq { >> #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN 1 >> #define VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX 0x8000 >> >> +struct virtio_net_ctrl_coalesce { >> + __u32 coalesce_usecs; >> + __u...