search for: csum_offset

Displaying 20 results from an estimated 135 matches for "csum_offset".

[PATCH] virtio_net: introduce VIRTIO_NET_HDR_F_DATA_VALID
2011 Jun 10
1
[PATCH] virtio_net: introduce VIRTIO_NET_HDR_F_DATA_VALID
...c index 6696e56..ecee0fe 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -508,6 +508,8 @@ static int macvtap_skb_to_vnet_hdr(const struct sk_buff *skb, vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; vnet_hdr->csum_start = skb_checksum_start_offset(skb); vnet_hdr->csum_offset = skb->csum_offset; + } else if (skb->ip_summed == CHECKSUM_UNNECESSARY) { + vnet_hdr->flags = VIRTIO_NET_HDR_F_DATA_VALID; } /* else everything is zero */ return 0; diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 74e9405..f43fa45 100644 --- a/drivers/net/tun.c +++ b/driver...
[PATCH] virtio_net: introduce VIRTIO_NET_HDR_F_DATA_VALID
2011 Jun 10
1
[PATCH] virtio_net: introduce VIRTIO_NET_HDR_F_DATA_VALID
...c index 6696e56..ecee0fe 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -508,6 +508,8 @@ static int macvtap_skb_to_vnet_hdr(const struct sk_buff *skb, vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM; vnet_hdr->csum_start = skb_checksum_start_offset(skb); vnet_hdr->csum_offset = skb->csum_offset; + } else if (skb->ip_summed == CHECKSUM_UNNECESSARY) { + vnet_hdr->flags = VIRTIO_NET_HDR_F_DATA_VALID; } /* else everything is zero */ return 0; diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 74e9405..f43fa45 100644 --- a/drivers/net/tun.c +++ b/driver...
[PATCH v2] Fix AF_PACKET ABI breakage in 4.2
2015 Sep 24
2
[PATCH v2] Fix AF_PACKET ABI breakage in 4.2
...682,15 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len) > goto out_unlock; > > if ((vnet_hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) && > - (__virtio16_to_cpu(false, vnet_hdr.csum_start) + > - __virtio16_to_cpu(false, vnet_hdr.csum_offset) + 2 > > - __virtio16_to_cpu(false, vnet_hdr.hdr_len))) > - vnet_hdr.hdr_len = __cpu_to_virtio16(false, > - __virtio16_to_cpu(false, vnet_hdr.csum_start) + > - __virtio16_to_cpu(false, vnet_hdr.csum_offset) + 2); > + (__virtio16_to_cpu(vio_le(), vnet_hdr.csum_...
[PATCH v2] Fix AF_PACKET ABI breakage in 4.2
2015 Sep 24
2
[PATCH v2] Fix AF_PACKET ABI breakage in 4.2
...682,15 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len) > goto out_unlock; > > if ((vnet_hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) && > - (__virtio16_to_cpu(false, vnet_hdr.csum_start) + > - __virtio16_to_cpu(false, vnet_hdr.csum_offset) + 2 > > - __virtio16_to_cpu(false, vnet_hdr.hdr_len))) > - vnet_hdr.hdr_len = __cpu_to_virtio16(false, > - __virtio16_to_cpu(false, vnet_hdr.csum_start) + > - __virtio16_to_cpu(false, vnet_hdr.csum_offset) + 2); > + (__virtio16_to_cpu(vio_le(), vnet_hdr.csum_...
[PATCH RFC] tun: fix sparse warnings for virtio headers
2014 Oct 23
0
[PATCH RFC] tun: fix sparse warnings for virtio headers
...t/tun.c index 186ce54..ee27ecb 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1043,10 +1043,10 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, return -EFAULT; if ((gso.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) && - gso.csum_start + gso.csum_offset + 2 > gso.hdr_len) - gso.hdr_len = gso.csum_start + gso.csum_offset + 2; + __virtio16_to_cpu(false, gso.csum_start) + __virtio16_to_cpu(false, gso.csum_offset) + 2 > __virtio16_to_cpu(false, gso.hdr_len)) + gso.hdr_len = __cpu_to_virtio16(false, __virtio16_to_cpu(false, gso.csum_star...
[PATCH RFC] tun: fix sparse warnings for virtio headers
2014 Oct 23
0
[PATCH RFC] tun: fix sparse warnings for virtio headers
...t/tun.c index 186ce54..ee27ecb 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1043,10 +1043,10 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile, return -EFAULT; if ((gso.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) && - gso.csum_start + gso.csum_offset + 2 > gso.hdr_len) - gso.hdr_len = gso.csum_start + gso.csum_offset + 2; + __virtio16_to_cpu(false, gso.csum_start) + __virtio16_to_cpu(false, gso.csum_offset) + 2 > __virtio16_to_cpu(false, gso.hdr_len)) + gso.hdr_len = __cpu_to_virtio16(false, __virtio16_to_cpu(false, gso.csum_star...
[PATCH v2 1/3] virtio-net: Introduce extended RSC feature
2020 Mar 01
1
[PATCH v2 1/3] virtio-net: Introduce extended RSC feature
...icates that the device > is able to provide extended RSC information. When the feature > is negotiatede and 'gso_type' field in received packet is not > GSO_NONE, the device reports number of coalesced packets in > 'csum_start' field and number of duplicated acks in 'csum_offset' > field and sets VIRTIO_NET_HDR_F_RSC_INFO in 'flags' field. > > Signed-off-by: Yuri Benditovich <yuri.benditovich at daynix.com> > --- > include/uapi/linux/virtio_net.h | 12 ++++++++++-- > 1 file changed, 10 insertions(+), 2 deletions(-) > > diff --gi...
[PATCH 1/3] skb_partial_csum_set
2008 Jan 15
2
[PATCH 1/3] skb_partial_csum_set
...sum values for packet + * @skb: the skb to set + * @start: the number of bytes after skb->data to start checksumming. + * @off: the offset from start to place the checksum. + * + * For untrusted partially-checksummed packets, we need to make sure the values + * for skb->csum_start and skb->csum_offset are valid so we don't oops. + * + * This function checks and sets those values and skb->ip_summed: if this + * returns false you should drop the packet. + */ +bool skb_partial_csum_set(struct sk_buff *skb, u16 start, u16 off) +{ + if (unlikely(start > skb->len - 2) || + unlikely((...
[PATCH 1/3] skb_partial_csum_set
2008 Jan 15
2
[PATCH 1/3] skb_partial_csum_set
...sum values for packet + * @skb: the skb to set + * @start: the number of bytes after skb->data to start checksumming. + * @off: the offset from start to place the checksum. + * + * For untrusted partially-checksummed packets, we need to make sure the values + * for skb->csum_start and skb->csum_offset are valid so we don't oops. + * + * This function checks and sets those values and skb->ip_summed: if this + * returns false you should drop the packet. + */ +bool skb_partial_csum_set(struct sk_buff *skb, u16 start, u16 off) +{ + if (unlikely(start > skb->len - 2) || + unlikely((...
[PATCH v2] Fix AF_PACKET ABI breakage in 4.2
2015 Sep 24
1
[PATCH v2] Fix AF_PACKET ABI breakage in 4.2
...682,15 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len) > goto out_unlock; > > if ((vnet_hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) && > - (__virtio16_to_cpu(false, vnet_hdr.csum_start) + > - __virtio16_to_cpu(false, vnet_hdr.csum_offset) + 2 > > - __virtio16_to_cpu(false, vnet_hdr.hdr_len))) > - vnet_hdr.hdr_len = __cpu_to_virtio16(false, > - __virtio16_to_cpu(false, vnet_hdr.csum_start) + > - __virtio16_to_cpu(false, vnet_hdr.csum_offset) + 2); > + (__virtio16_to_cpu(vio_le(), vnet_hdr.csum_...
[PATCH v2] Fix AF_PACKET ABI breakage in 4.2
2015 Sep 24
1
[PATCH v2] Fix AF_PACKET ABI breakage in 4.2
...682,15 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len) > goto out_unlock; > > if ((vnet_hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) && > - (__virtio16_to_cpu(false, vnet_hdr.csum_start) + > - __virtio16_to_cpu(false, vnet_hdr.csum_offset) + 2 > > - __virtio16_to_cpu(false, vnet_hdr.hdr_len))) > - vnet_hdr.hdr_len = __cpu_to_virtio16(false, > - __virtio16_to_cpu(false, vnet_hdr.csum_start) + > - __virtio16_to_cpu(false, vnet_hdr.csum_offset) + 2); > + (__virtio16_to_cpu(vio_le(), vnet_hdr.csum_...
[PATCH v2] Fix AF_PACKET ABI breakage in 4.2
2015 Sep 24
0
[PATCH v2] Fix AF_PACKET ABI breakage in 4.2
...et_snd(struct socket *sock, struct msghdr *msg, size_t len) > > goto out_unlock; > > > > if ((vnet_hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) && > > - (__virtio16_to_cpu(false, vnet_hdr.csum_start) + > > - __virtio16_to_cpu(false, vnet_hdr.csum_offset) + 2 > > > - __virtio16_to_cpu(false, vnet_hdr.hdr_len))) > > - vnet_hdr.hdr_len = __cpu_to_virtio16(false, > > - __virtio16_to_cpu(false, vnet_hdr.csum_start) + > > - __virtio16_to_cpu(false, vnet_hdr.csum_offset) + 2); > > + (__virtio16_to_cpu...
[PATCH v3 11/41] virtio_net: v1.0 endianness
2014 Nov 24
0
[PATCH v3 11/41] virtio_net: v1.0 endianness
...T_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP #define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set __u8 gso_type; - __u16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ - __u16 gso_size; /* Bytes to append to hdr_len per frame */ - __u16 csum_start; /* Position to start checksumming from */ - __u16 csum_offset; /* Offset after that to place checksum */ + __virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ + __virtio16 gso_size; /* Bytes to append to hdr_len per frame */ + __virtio16 csum_start; /* Position to start checksumming from */ + __virtio16 csum_offset; /* Offset after that to place checksum...
[PATCH v4 12/42] virtio_net: v1.0 endianness
2014 Nov 25
0
[PATCH v4 12/42] virtio_net: v1.0 endianness
...T_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP #define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set __u8 gso_type; - __u16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ - __u16 gso_size; /* Bytes to append to hdr_len per frame */ - __u16 csum_start; /* Position to start checksumming from */ - __u16 csum_offset; /* Offset after that to place checksum */ + __virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ + __virtio16 gso_size; /* Bytes to append to hdr_len per frame */ + __virtio16 csum_start; /* Position to start checksumming from */ + __virtio16 csum_offset; /* Offset after that to place checksum...
[PATCH v5 14/45] virtio_net: v1.0 endianness
2014 Nov 27
0
[PATCH v5 14/45] virtio_net: v1.0 endianness
...T_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP #define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set __u8 gso_type; - __u16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ - __u16 gso_size; /* Bytes to append to hdr_len per frame */ - __u16 csum_start; /* Position to start checksumming from */ - __u16 csum_offset; /* Offset after that to place checksum */ + __virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ + __virtio16 gso_size; /* Bytes to append to hdr_len per frame */ + __virtio16 csum_start; /* Position to start checksumming from */ + __virtio16 csum_offset; /* Offset after that to place checksum...
[PATCH v6 15/46] virtio_net: v1.0 endianness
2014 Nov 27
0
[PATCH v6 15/46] virtio_net: v1.0 endianness
...T_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP #define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set __u8 gso_type; - __u16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ - __u16 gso_size; /* Bytes to append to hdr_len per frame */ - __u16 csum_start; /* Position to start checksumming from */ - __u16 csum_offset; /* Offset after that to place checksum */ + __virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ + __virtio16 gso_size; /* Bytes to append to hdr_len per frame */ + __virtio16 csum_start; /* Position to start checksumming from */ + __virtio16 csum_offset; /* Offset after that to place checksum...
[PATCH v7 15/46] virtio_net: v1.0 endianness
2014 Nov 30
0
[PATCH v7 15/46] virtio_net: v1.0 endianness
...T_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP #define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set __u8 gso_type; - __u16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ - __u16 gso_size; /* Bytes to append to hdr_len per frame */ - __u16 csum_start; /* Position to start checksumming from */ - __u16 csum_offset; /* Offset after that to place checksum */ + __virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ + __virtio16 gso_size; /* Bytes to append to hdr_len per frame */ + __virtio16 csum_start; /* Position to start checksumming from */ + __virtio16 csum_offset; /* Offset after that to place checksum...
[PATCH v8 15/50] virtio_net: v1.0 endianness
2014 Dec 01
0
[PATCH v8 15/50] virtio_net: v1.0 endianness
...T_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP #define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set __u8 gso_type; - __u16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ - __u16 gso_size; /* Bytes to append to hdr_len per frame */ - __u16 csum_start; /* Position to start checksumming from */ - __u16 csum_offset; /* Offset after that to place checksum */ + __virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ + __virtio16 gso_size; /* Bytes to append to hdr_len per frame */ + __virtio16 csum_start; /* Position to start checksumming from */ + __virtio16 csum_offset; /* Offset after that to place checksum...
[PATCH v3 11/41] virtio_net: v1.0 endianness
2014 Nov 24
0
[PATCH v3 11/41] virtio_net: v1.0 endianness
...T_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP #define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set __u8 gso_type; - __u16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ - __u16 gso_size; /* Bytes to append to hdr_len per frame */ - __u16 csum_start; /* Position to start checksumming from */ - __u16 csum_offset; /* Offset after that to place checksum */ + __virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ + __virtio16 gso_size; /* Bytes to append to hdr_len per frame */ + __virtio16 csum_start; /* Position to start checksumming from */ + __virtio16 csum_offset; /* Offset after that to place checksum...
[PATCH v4 12/42] virtio_net: v1.0 endianness
2014 Nov 25
0
[PATCH v4 12/42] virtio_net: v1.0 endianness
...T_HDR_GSO_TCPV6 4 // GSO frame, IPv6 TCP #define VIRTIO_NET_HDR_GSO_ECN 0x80 // TCP has ECN set __u8 gso_type; - __u16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ - __u16 gso_size; /* Bytes to append to hdr_len per frame */ - __u16 csum_start; /* Position to start checksumming from */ - __u16 csum_offset; /* Offset after that to place checksum */ + __virtio16 hdr_len; /* Ethernet + IP + tcp/udp hdrs */ + __virtio16 gso_size; /* Bytes to append to hdr_len per frame */ + __virtio16 csum_start; /* Position to start checksumming from */ + __virtio16 csum_offset; /* Offset after that to place checksum...