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authorRonak Doshi <doshir@vmware.com>2022-06-08 06:23:52 +0300
committerPaolo Abeni <pabeni@redhat.com>2022-06-09 13:42:01 +0300
commit60cafa0395c2bed44d13277ed328317ed16a58c0 (patch)
tree2a1e1e488c776145d6eba6b889506c9c7c6c7436 /drivers/net/vmxnet3
parentd2857b99a74b082368ee80f359372faa1d051043 (diff)
downloadlinux-60cafa0395c2bed44d13277ed328317ed16a58c0.tar.xz
vmxnet3: use ext1 field to indicate encapsulated packet
Till vmxnet3 version 6, om field of transmit descriptor was used to indicate encapsulated offload packet and msscof was used to indirectly indicate TSO/CSO. From version 7 and later, ext1 field will be used to indicate whether packet is encapsulated or not and om fields will continue to indicate if the packet is TSO or CSO. Signed-off-by: Ronak Doshi <doshir@vmware.com> Acked-by: Guolin Yang <gyang@vmware.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/vmxnet3')
-rw-r--r--drivers/net/vmxnet3/vmxnet3_defs.h14
-rw-r--r--drivers/net/vmxnet3/vmxnet3_drv.c18
2 files changed, 23 insertions, 9 deletions
diff --git a/drivers/net/vmxnet3/vmxnet3_defs.h b/drivers/net/vmxnet3/vmxnet3_defs.h
index cb9dc72f2b3d..41d6767283a6 100644
--- a/drivers/net/vmxnet3/vmxnet3_defs.h
+++ b/drivers/net/vmxnet3/vmxnet3_defs.h
@@ -148,17 +148,17 @@ struct Vmxnet3_TxDesc {
#ifdef __BIG_ENDIAN_BITFIELD
u32 msscof:14; /* MSS, checksum offset, flags */
- u32 ext1:1;
+ u32 ext1:1; /* set to 1 to indicate inner csum/tso, vmxnet3 v7 */
u32 dtype:1; /* descriptor type */
- u32 oco:1;
+ u32 oco:1; /* Outer csum offload */
u32 gen:1; /* generation bit */
u32 len:14;
#else
u32 len:14;
u32 gen:1; /* generation bit */
- u32 oco:1;
+ u32 oco:1; /* Outer csum offload */
u32 dtype:1; /* descriptor type */
- u32 ext1:1;
+ u32 ext1:1; /* set to 1 to indicate inner csum/tso, vmxnet3 v7 */
u32 msscof:14; /* MSS, checksum offset, flags */
#endif /* __BIG_ENDIAN_BITFIELD */
@@ -262,11 +262,13 @@ struct Vmxnet3_RxCompDesc {
u32 rqID:10; /* rx queue/ring ID */
u32 sop:1; /* Start of Packet */
u32 eop:1; /* End of Packet */
- u32 ext1:2;
+ u32 ext1:2; /* bit 0: indicating v4/v6/.. is for inner header */
+ /* bit 1: indicating rssType is based on inner header */
u32 rxdIdx:12; /* Index of the RxDesc */
#else
u32 rxdIdx:12; /* Index of the RxDesc */
- u32 ext1:2;
+ u32 ext1:2; /* bit 0: indicating v4/v6/.. is for inner header */
+ /* bit 1: indicating rssType is based on inner header */
u32 eop:1; /* End of Packet */
u32 sop:1; /* Start of Packet */
u32 rqID:10; /* rx queue/ring ID */
diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index 2ee3a2e39f10..5c42b4a008e8 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -1161,7 +1161,12 @@ vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq,
if (ctx.mss) {
if (VMXNET3_VERSION_GE_4(adapter) && skb->encapsulation) {
gdesc->txd.hlen = ctx.l4_offset + ctx.l4_hdr_size;
- gdesc->txd.om = VMXNET3_OM_ENCAP;
+ if (VMXNET3_VERSION_GE_7(adapter)) {
+ gdesc->txd.om = VMXNET3_OM_TSO;
+ gdesc->txd.ext1 = 1;
+ } else {
+ gdesc->txd.om = VMXNET3_OM_ENCAP;
+ }
gdesc->txd.msscof = ctx.mss;
if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL_CSUM)
@@ -1178,8 +1183,15 @@ vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq,
skb->encapsulation) {
gdesc->txd.hlen = ctx.l4_offset +
ctx.l4_hdr_size;
- gdesc->txd.om = VMXNET3_OM_ENCAP;
- gdesc->txd.msscof = 0; /* Reserved */
+ if (VMXNET3_VERSION_GE_7(adapter)) {
+ gdesc->txd.om = VMXNET3_OM_CSUM;
+ gdesc->txd.msscof = ctx.l4_offset +
+ skb->csum_offset;
+ gdesc->txd.ext1 = 1;
+ } else {
+ gdesc->txd.om = VMXNET3_OM_ENCAP;
+ gdesc->txd.msscof = 0; /* Reserved */
+ }
} else {
gdesc->txd.hlen = ctx.l4_offset;
gdesc->txd.om = VMXNET3_OM_CSUM;