mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 22:24:09 +08:00
netvsc: negotiate checksum and segmentation parameters
Redo how Hyper-V network driver negotiates offload features. Query the host to determine offload settings, and use the result. Also: * disable IPv4 header checksum offload (not used by Linux) * enable TSO only if host supports * enable UDP checksum offload if supported * don't advertise support for checksumming of non-IP protocols * adjust GSO maximum segment size * enable HIGHDMA Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
0b307ebd68
commit
23312a3be9
@ -34,6 +34,7 @@
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#define NDIS_OBJECT_TYPE_RSS_CAPABILITIES 0x88
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#define NDIS_OBJECT_TYPE_RSS_PARAMETERS 0x89
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#define NDIS_OBJECT_TYPE_OFFLOAD 0xa7
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#define NDIS_RECEIVE_SCALE_CAPABILITIES_REVISION_2 2
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#define NDIS_RECEIVE_SCALE_PARAMETERS_REVISION_2 2
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@ -685,6 +686,7 @@ struct net_device_context {
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struct work_struct work;
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u32 msg_enable; /* debug level */
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u32 tx_checksum_mask;
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struct netvsc_stats __percpu *tx_stats;
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struct netvsc_stats __percpu *rx_stats;
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@ -934,7 +936,7 @@ struct ndis_pkt_8021q_info {
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};
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};
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struct ndis_oject_header {
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struct ndis_object_header {
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u8 type;
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u8 revision;
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u16 size;
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@ -942,6 +944,9 @@ struct ndis_oject_header {
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#define NDIS_OBJECT_TYPE_DEFAULT 0x80
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#define NDIS_OFFLOAD_PARAMETERS_REVISION_3 3
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#define NDIS_OFFLOAD_PARAMETERS_REVISION_2 2
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#define NDIS_OFFLOAD_PARAMETERS_REVISION_1 1
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#define NDIS_OFFLOAD_PARAMETERS_NO_CHANGE 0
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#define NDIS_OFFLOAD_PARAMETERS_LSOV2_DISABLED 1
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#define NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED 2
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@ -968,8 +973,135 @@ struct ndis_oject_header {
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#define OID_TCP_CONNECTION_OFFLOAD_HARDWARE_CAPABILITIES 0xFC01020F /* query */
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#define OID_OFFLOAD_ENCAPSULATION 0x0101010A /* set/query */
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/*
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* OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES
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* ndis_type: NDIS_OBJTYPE_OFFLOAD
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*/
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#define NDIS_OFFLOAD_ENCAP_NONE 0x0000
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#define NDIS_OFFLOAD_ENCAP_NULL 0x0001
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#define NDIS_OFFLOAD_ENCAP_8023 0x0002
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#define NDIS_OFFLOAD_ENCAP_8023PQ 0x0004
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#define NDIS_OFFLOAD_ENCAP_8023PQ_OOB 0x0008
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#define NDIS_OFFLOAD_ENCAP_RFC1483 0x0010
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struct ndis_csum_offload {
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u32 ip4_txenc;
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u32 ip4_txcsum;
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#define NDIS_TXCSUM_CAP_IP4OPT 0x001
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#define NDIS_TXCSUM_CAP_TCP4OPT 0x004
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#define NDIS_TXCSUM_CAP_TCP4 0x010
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#define NDIS_TXCSUM_CAP_UDP4 0x040
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#define NDIS_TXCSUM_CAP_IP4 0x100
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#define NDIS_TXCSUM_ALL_TCP4 (NDIS_TXCSUM_CAP_TCP4 | NDIS_TXCSUM_CAP_TCP4OPT)
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u32 ip4_rxenc;
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u32 ip4_rxcsum;
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#define NDIS_RXCSUM_CAP_IP4OPT 0x001
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#define NDIS_RXCSUM_CAP_TCP4OPT 0x004
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#define NDIS_RXCSUM_CAP_TCP4 0x010
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#define NDIS_RXCSUM_CAP_UDP4 0x040
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#define NDIS_RXCSUM_CAP_IP4 0x100
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u32 ip6_txenc;
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u32 ip6_txcsum;
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#define NDIS_TXCSUM_CAP_IP6EXT 0x001
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#define NDIS_TXCSUM_CAP_TCP6OPT 0x004
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#define NDIS_TXCSUM_CAP_TCP6 0x010
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#define NDIS_TXCSUM_CAP_UDP6 0x040
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u32 ip6_rxenc;
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u32 ip6_rxcsum;
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#define NDIS_RXCSUM_CAP_IP6EXT 0x001
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#define NDIS_RXCSUM_CAP_TCP6OPT 0x004
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#define NDIS_RXCSUM_CAP_TCP6 0x010
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#define NDIS_RXCSUM_CAP_UDP6 0x040
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#define NDIS_TXCSUM_ALL_TCP6 (NDIS_TXCSUM_CAP_TCP6 | \
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NDIS_TXCSUM_CAP_TCP6OPT | \
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NDIS_TXCSUM_CAP_IP6EXT)
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};
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struct ndis_lsov1_offload {
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u32 encap;
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u32 maxsize;
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u32 minsegs;
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u32 opts;
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};
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struct ndis_ipsecv1_offload {
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u32 encap;
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u32 ah_esp;
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u32 xport_tun;
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u32 ip4_opts;
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u32 flags;
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u32 ip4_ah;
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u32 ip4_esp;
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};
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struct ndis_lsov2_offload {
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u32 ip4_encap;
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u32 ip4_maxsz;
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u32 ip4_minsg;
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u32 ip6_encap;
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u32 ip6_maxsz;
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u32 ip6_minsg;
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u32 ip6_opts;
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#define NDIS_LSOV2_CAP_IP6EXT 0x001
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#define NDIS_LSOV2_CAP_TCP6OPT 0x004
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#define NDIS_LSOV2_CAP_IP6 (NDIS_LSOV2_CAP_IP6EXT | \
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NDIS_LSOV2_CAP_TCP6OPT)
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};
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struct ndis_ipsecv2_offload {
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u32 encap;
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u16 ip6;
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u16 ip4opt;
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u16 ip6ext;
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u16 ah;
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u16 esp;
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u16 ah_esp;
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u16 xport;
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u16 tun;
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u16 xport_tun;
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u16 lso;
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u16 extseq;
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u32 udp_esp;
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u32 auth;
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u32 crypto;
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u32 sa_caps;
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};
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struct ndis_rsc_offload {
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u16 ip4;
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u16 ip6;
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};
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struct ndis_encap_offload {
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u32 flags;
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u32 maxhdr;
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};
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struct ndis_offload {
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struct ndis_object_header header;
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struct ndis_csum_offload csum;
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struct ndis_lsov1_offload lsov1;
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struct ndis_ipsecv1_offload ipsecv1;
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struct ndis_lsov2_offload lsov2;
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u32 flags;
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/* NDIS >= 6.1 */
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struct ndis_ipsecv2_offload ipsecv2;
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/* NDIS >= 6.30 */
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struct ndis_rsc_offload rsc;
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struct ndis_encap_offload encap_gre;
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};
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#define NDIS_OFFLOAD_SIZE sizeof(struct ndis_offload)
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#define NDIS_OFFLOAD_SIZE_6_0 offsetof(struct ndis_offload, ipsecv2)
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#define NDIS_OFFLOAD_SIZE_6_1 offsetof(struct ndis_offload, rsc)
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struct ndis_offload_params {
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struct ndis_oject_header header;
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struct ndis_object_header header;
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u8 ip_v4_csum;
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u8 tcp_ip_v4_csum;
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u8 udp_ip_v4_csum;
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@ -1296,15 +1428,10 @@ struct rndis_message {
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#define NDIS_PACKET_TYPE_FUNCTIONAL 0x00000400
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#define NDIS_PACKET_TYPE_MAC_FRAME 0x00000800
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#define INFO_IPV4 2
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#define INFO_IPV6 4
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#define INFO_TCP 2
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#define INFO_UDP 4
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#define TRANSPORT_INFO_NOT_IP 0
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#define TRANSPORT_INFO_IPV4_TCP ((INFO_IPV4 << 16) | INFO_TCP)
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#define TRANSPORT_INFO_IPV4_UDP ((INFO_IPV4 << 16) | INFO_UDP)
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#define TRANSPORT_INFO_IPV6_TCP ((INFO_IPV6 << 16) | INFO_TCP)
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#define TRANSPORT_INFO_IPV6_UDP ((INFO_IPV6 << 16) | INFO_UDP)
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#define TRANSPORT_INFO_IPV4_TCP 0x01
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#define TRANSPORT_INFO_IPV4_UDP 0x02
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#define TRANSPORT_INFO_IPV6_TCP 0x10
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#define TRANSPORT_INFO_IPV6_UDP 0x20
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#endif /* _HYPERV_NET_H */
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@ -42,14 +42,6 @@
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#define RING_SIZE_MIN 64
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#define LINKCHANGE_INT (2 * HZ)
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#define NETVSC_HW_FEATURES (NETIF_F_RXCSUM | \
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NETIF_F_SG | \
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NETIF_F_TSO | \
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NETIF_F_TSO6 | \
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NETIF_F_HW_CSUM)
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/* Restrict GSO size to account for NVGRE */
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#define NETVSC_GSO_MAX_SIZE 62768
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static int ring_size = 128;
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module_param(ring_size, int, S_IRUGO);
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@ -323,33 +315,25 @@ static int netvsc_get_slots(struct sk_buff *skb)
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return slots + frag_slots;
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}
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static u32 get_net_transport_info(struct sk_buff *skb, u32 *trans_off)
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static u32 net_checksum_info(struct sk_buff *skb)
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{
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u32 ret_val = TRANSPORT_INFO_NOT_IP;
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if (skb->protocol == htons(ETH_P_IP)) {
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struct iphdr *ip = ip_hdr(skb);
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if ((eth_hdr(skb)->h_proto != htons(ETH_P_IP)) &&
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(eth_hdr(skb)->h_proto != htons(ETH_P_IPV6))) {
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goto not_ip;
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}
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*trans_off = skb_transport_offset(skb);
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if ((eth_hdr(skb)->h_proto == htons(ETH_P_IP))) {
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struct iphdr *iphdr = ip_hdr(skb);
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if (iphdr->protocol == IPPROTO_TCP)
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ret_val = TRANSPORT_INFO_IPV4_TCP;
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else if (iphdr->protocol == IPPROTO_UDP)
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ret_val = TRANSPORT_INFO_IPV4_UDP;
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if (ip->protocol == IPPROTO_TCP)
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return TRANSPORT_INFO_IPV4_TCP;
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else if (ip->protocol == IPPROTO_UDP)
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return TRANSPORT_INFO_IPV4_UDP;
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} else {
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if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
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ret_val = TRANSPORT_INFO_IPV6_TCP;
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struct ipv6hdr *ip6 = ipv6_hdr(skb);
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if (ip6->nexthdr == IPPROTO_TCP)
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return TRANSPORT_INFO_IPV6_TCP;
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else if (ipv6_hdr(skb)->nexthdr == IPPROTO_UDP)
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ret_val = TRANSPORT_INFO_IPV6_UDP;
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return TRANSPORT_INFO_IPV6_UDP;
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}
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not_ip:
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return ret_val;
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return TRANSPORT_INFO_NOT_IP;
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}
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static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
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@ -362,9 +346,6 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
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struct rndis_packet *rndis_pkt;
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u32 rndis_msg_size;
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struct rndis_per_packet_info *ppi;
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struct ndis_tcp_ip_checksum_info *csum_info;
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int hdr_offset;
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u32 net_trans_info;
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u32 hash;
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u32 skb_length;
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struct hv_page_buffer page_buf[MAX_PAGE_BUFFER_COUNT];
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@ -445,13 +426,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
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VLAN_PRIO_SHIFT;
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}
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net_trans_info = get_net_transport_info(skb, &hdr_offset);
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/*
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* Setup the sendside checksum offload only if this is not a
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* GSO packet.
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*/
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if ((net_trans_info & (INFO_TCP | INFO_UDP)) && skb_is_gso(skb)) {
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if (skb_is_gso(skb)) {
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struct ndis_tcp_lso_info *lso_info;
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rndis_msg_size += NDIS_LSO_PPI_SIZE;
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@ -462,7 +437,7 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
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ppi->ppi_offset);
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lso_info->lso_v2_transmit.type = NDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE;
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if (net_trans_info & (INFO_IPV4 << 16)) {
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if (skb->protocol == htons(ETH_P_IP)) {
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lso_info->lso_v2_transmit.ip_version =
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NDIS_TCP_LARGE_SEND_OFFLOAD_IPV4;
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ip_hdr(skb)->tot_len = 0;
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@ -478,10 +453,12 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
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~csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
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&ipv6_hdr(skb)->daddr, 0, IPPROTO_TCP, 0);
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}
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lso_info->lso_v2_transmit.tcp_header_offset = hdr_offset;
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lso_info->lso_v2_transmit.tcp_header_offset = skb_transport_offset(skb);
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lso_info->lso_v2_transmit.mss = skb_shinfo(skb)->gso_size;
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} else if (skb->ip_summed == CHECKSUM_PARTIAL) {
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if (net_trans_info & INFO_TCP) {
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if (net_checksum_info(skb) & net_device_ctx->tx_checksum_mask) {
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struct ndis_tcp_ip_checksum_info *csum_info;
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rndis_msg_size += NDIS_CSUM_PPI_SIZE;
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ppi = init_ppi_data(rndis_msg, NDIS_CSUM_PPI_SIZE,
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TCPIP_CHKSUM_PKTINFO);
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@ -489,15 +466,25 @@ static int netvsc_start_xmit(struct sk_buff *skb, struct net_device *net)
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csum_info = (struct ndis_tcp_ip_checksum_info *)((void *)ppi +
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ppi->ppi_offset);
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if (net_trans_info & (INFO_IPV4 << 16))
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csum_info->transmit.tcp_header_offset = skb_transport_offset(skb);
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if (skb->protocol == htons(ETH_P_IP)) {
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csum_info->transmit.is_ipv4 = 1;
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else
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if (ip_hdr(skb)->protocol == IPPROTO_TCP)
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csum_info->transmit.tcp_checksum = 1;
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else
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csum_info->transmit.udp_checksum = 1;
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} else {
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csum_info->transmit.is_ipv6 = 1;
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csum_info->transmit.tcp_checksum = 1;
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csum_info->transmit.tcp_header_offset = hdr_offset;
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if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
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csum_info->transmit.tcp_checksum = 1;
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else
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csum_info->transmit.udp_checksum = 1;
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}
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} else {
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/* UDP checksum (and other) offload is not supported. */
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/* Can't do offload of this type of checksum */
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if (skb_checksum_help(skb))
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goto drop;
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}
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@ -1372,10 +1359,6 @@ static int netvsc_probe(struct hv_device *dev,
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INIT_LIST_HEAD(&net_device_ctx->reconfig_events);
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net->netdev_ops = &device_ops;
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net->hw_features = NETVSC_HW_FEATURES;
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net->features = NETVSC_HW_FEATURES | NETIF_F_HW_VLAN_CTAG_TX;
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net->ethtool_ops = ðtool_ops;
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SET_NETDEV_DEV(net, &dev->device);
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@ -1395,10 +1378,15 @@ static int netvsc_probe(struct hv_device *dev,
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}
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memcpy(net->dev_addr, device_info.mac_adr, ETH_ALEN);
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/* hw_features computed in rndis_filter_device_add */
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net->features = net->hw_features |
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NETIF_F_HIGHDMA | NETIF_F_SG |
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NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
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net->vlan_features = net->features;
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nvdev = net_device_ctx->nvdev;
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netif_set_real_num_tx_queues(net, nvdev->num_chn);
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netif_set_real_num_rx_queues(net, nvdev->num_chn);
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netif_set_gso_max_size(net, NETVSC_GSO_MAX_SIZE);
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/* MTU range: 68 - 1500 or 65521 */
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net->min_mtu = NETVSC_MTU_MIN;
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@ -485,7 +485,35 @@ static int rndis_filter_query_device(struct rndis_device *dev, u32 oid,
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query->info_buflen = 0;
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query->dev_vc_handle = 0;
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if (oid == OID_GEN_RECEIVE_SCALE_CAPABILITIES) {
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if (oid == OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES) {
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struct net_device_context *ndevctx = netdev_priv(dev->ndev);
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struct netvsc_device *nvdev = ndevctx->nvdev;
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struct ndis_offload *hwcaps;
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u32 nvsp_version = nvdev->nvsp_version;
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u8 ndis_rev;
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size_t size;
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if (nvsp_version >= NVSP_PROTOCOL_VERSION_5) {
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ndis_rev = NDIS_OFFLOAD_PARAMETERS_REVISION_3;
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size = NDIS_OFFLOAD_SIZE;
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} else if (nvsp_version >= NVSP_PROTOCOL_VERSION_4) {
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ndis_rev = NDIS_OFFLOAD_PARAMETERS_REVISION_2;
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size = NDIS_OFFLOAD_SIZE_6_1;
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} else {
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ndis_rev = NDIS_OFFLOAD_PARAMETERS_REVISION_1;
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size = NDIS_OFFLOAD_SIZE_6_0;
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}
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request->request_msg.msg_len += size;
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query->info_buflen = size;
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hwcaps = (struct ndis_offload *)
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((unsigned long)query + query->info_buf_offset);
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hwcaps->header.type = NDIS_OBJECT_TYPE_OFFLOAD;
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hwcaps->header.revision = ndis_rev;
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hwcaps->header.size = size;
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} else if (oid == OID_GEN_RECEIVE_SCALE_CAPABILITIES) {
|
||||
struct ndis_recv_scale_cap *cap;
|
||||
|
||||
request->request_msg.msg_len +=
|
||||
@ -526,6 +554,44 @@ cleanup:
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Get the hardware offload capabilities */
|
||||
static int
|
||||
rndis_query_hwcaps(struct rndis_device *dev, struct ndis_offload *caps)
|
||||
{
|
||||
u32 caps_len = sizeof(*caps);
|
||||
int ret;
|
||||
|
||||
memset(caps, 0, sizeof(*caps));
|
||||
|
||||
ret = rndis_filter_query_device(dev,
|
||||
OID_TCP_OFFLOAD_HARDWARE_CAPABILITIES,
|
||||
caps, &caps_len);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
if (caps->header.type != NDIS_OBJECT_TYPE_OFFLOAD) {
|
||||
netdev_warn(dev->ndev, "invalid NDIS objtype %#x\n",
|
||||
caps->header.type);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (caps->header.revision < NDIS_OFFLOAD_PARAMETERS_REVISION_1) {
|
||||
netdev_warn(dev->ndev, "invalid NDIS objrev %x\n",
|
||||
caps->header.revision);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (caps->header.size > caps_len ||
|
||||
caps->header.size < NDIS_OFFLOAD_SIZE_6_0) {
|
||||
netdev_warn(dev->ndev,
|
||||
"invalid NDIS objsize %u, data size %u\n",
|
||||
caps->header.size, caps_len);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int rndis_filter_query_device_mac(struct rndis_device *dev)
|
||||
{
|
||||
u32 size = ETH_ALEN;
|
||||
@ -974,10 +1040,12 @@ int rndis_filter_device_add(struct hv_device *dev,
|
||||
struct netvsc_device *net_device;
|
||||
struct rndis_device *rndis_device;
|
||||
struct netvsc_device_info *device_info = additional_info;
|
||||
struct ndis_offload hwcaps;
|
||||
struct ndis_offload_params offloads;
|
||||
struct nvsp_message *init_packet;
|
||||
struct ndis_recv_scale_cap rsscap;
|
||||
u32 rsscap_size = sizeof(struct ndis_recv_scale_cap);
|
||||
unsigned int gso_max_size = GSO_MAX_SIZE;
|
||||
u32 mtu, size;
|
||||
u32 num_rss_qs;
|
||||
u32 sc_delta;
|
||||
@ -1034,19 +1102,65 @@ int rndis_filter_device_add(struct hv_device *dev,
|
||||
|
||||
memcpy(device_info->mac_adr, rndis_device->hw_mac_adr, ETH_ALEN);
|
||||
|
||||
/* Turn on the offloads; the host supports all of the relevant
|
||||
* offloads.
|
||||
*/
|
||||
/* Find HW offload capabilities */
|
||||
ret = rndis_query_hwcaps(rndis_device, &hwcaps);
|
||||
if (ret != 0) {
|
||||
rndis_filter_device_remove(dev);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* A value of zero means "no change"; now turn on what we want. */
|
||||
memset(&offloads, 0, sizeof(struct ndis_offload_params));
|
||||
/* A value of zero means "no change"; now turn on what we
|
||||
* want.
|
||||
*/
|
||||
offloads.ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;
|
||||
offloads.tcp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;
|
||||
offloads.udp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;
|
||||
offloads.tcp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;
|
||||
offloads.udp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;
|
||||
offloads.lso_v2_ipv4 = NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED;
|
||||
|
||||
/* Linux does not care about IP checksum, always does in kernel */
|
||||
offloads.ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_DISABLED;
|
||||
|
||||
/* Compute tx offload settings based on hw capabilities */
|
||||
net->hw_features = NETIF_F_RXCSUM;
|
||||
|
||||
if ((hwcaps.csum.ip4_txcsum & NDIS_TXCSUM_ALL_TCP4) == NDIS_TXCSUM_ALL_TCP4) {
|
||||
/* Can checksum TCP */
|
||||
net->hw_features |= NETIF_F_IP_CSUM;
|
||||
net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV4_TCP;
|
||||
|
||||
offloads.tcp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;
|
||||
|
||||
if (hwcaps.lsov2.ip4_encap & NDIS_OFFLOAD_ENCAP_8023) {
|
||||
offloads.lso_v2_ipv4 = NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED;
|
||||
net->hw_features |= NETIF_F_TSO;
|
||||
|
||||
if (hwcaps.lsov2.ip4_maxsz < gso_max_size)
|
||||
gso_max_size = hwcaps.lsov2.ip4_maxsz;
|
||||
}
|
||||
|
||||
if (hwcaps.csum.ip4_txcsum & NDIS_TXCSUM_CAP_UDP4) {
|
||||
offloads.udp_ip_v4_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;
|
||||
net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV4_UDP;
|
||||
}
|
||||
}
|
||||
|
||||
if ((hwcaps.csum.ip6_txcsum & NDIS_TXCSUM_ALL_TCP6) == NDIS_TXCSUM_ALL_TCP6) {
|
||||
net->hw_features |= NETIF_F_IPV6_CSUM;
|
||||
|
||||
offloads.tcp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;
|
||||
net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV6_TCP;
|
||||
|
||||
if ((hwcaps.lsov2.ip6_encap & NDIS_OFFLOAD_ENCAP_8023) &&
|
||||
(hwcaps.lsov2.ip6_opts & NDIS_LSOV2_CAP_IP6) == NDIS_LSOV2_CAP_IP6) {
|
||||
offloads.lso_v2_ipv6 = NDIS_OFFLOAD_PARAMETERS_LSOV2_ENABLED;
|
||||
net->hw_features |= NETIF_F_TSO6;
|
||||
|
||||
if (hwcaps.lsov2.ip6_maxsz < gso_max_size)
|
||||
gso_max_size = hwcaps.lsov2.ip6_maxsz;
|
||||
}
|
||||
|
||||
if (hwcaps.csum.ip6_txcsum & NDIS_TXCSUM_CAP_UDP6) {
|
||||
offloads.udp_ip_v6_csum = NDIS_OFFLOAD_PARAMETERS_TX_RX_ENABLED;
|
||||
net_device_ctx->tx_checksum_mask |= TRANSPORT_INFO_IPV6_UDP;
|
||||
}
|
||||
}
|
||||
|
||||
netif_set_gso_max_size(net, gso_max_size);
|
||||
|
||||
ret = rndis_filter_set_offload_params(net, &offloads);
|
||||
if (ret)
|
||||
|
Loading…
Reference in New Issue
Block a user