[ofa-general] [PATCH] ib_mthca checksum offload support
Eli Cohen
eli at mellanox.co.il
Sun Aug 12 04:43:48 PDT 2007
Add checksum offload support
Signed-off-by: Eli Cohen <eli at mellnaox.co.il>
---
Index: linux-2.6.23-rc1/drivers/infiniband/hw/mthca/mthca_cmd.c
===================================================================
--- linux-2.6.23-rc1.orig/drivers/infiniband/hw/mthca/mthca_cmd.c 2007-08-02 17:14:45.000000000 +0300
+++ linux-2.6.23-rc1/drivers/infiniband/hw/mthca/mthca_cmd.c 2007-08-02 17:15:41.000000000 +0300
@@ -1377,6 +1377,9 @@ int mthca_INIT_HCA(struct mthca_dev *dev
MTHCA_PUT(inbox, param->uarc_base, INIT_HCA_UAR_CTX_BASE_OFFSET);
}
+ if (dev->device_cap_flags & IB_DEVICE_IP_CSUM)
+ *(inbox + INIT_HCA_FLAGS2_OFFSET / 4) |= cpu_to_be32(7 << 3);
+
err = mthca_cmd(dev, mailbox->dma, 0, 0, CMD_INIT_HCA, HZ, status);
mthca_free_mailbox(dev, mailbox);
Index: linux-2.6.23-rc1/drivers/infiniband/hw/mthca/mthca_cmd.h
===================================================================
--- linux-2.6.23-rc1.orig/drivers/infiniband/hw/mthca/mthca_cmd.h 2007-08-02 17:14:45.000000000 +0300
+++ linux-2.6.23-rc1/drivers/infiniband/hw/mthca/mthca_cmd.h 2007-08-02 17:15:41.000000000 +0300
@@ -103,6 +103,7 @@ enum {
DEV_LIM_FLAG_RAW_IPV6 = 1 << 4,
DEV_LIM_FLAG_RAW_ETHER = 1 << 5,
DEV_LIM_FLAG_SRQ = 1 << 6,
+ DEV_LIM_FLAG_IPOIB_CSUM = 1 << 7,
DEV_LIM_FLAG_BAD_PKEY_CNTR = 1 << 8,
DEV_LIM_FLAG_BAD_QKEY_CNTR = 1 << 9,
DEV_LIM_FLAG_MW = 1 << 16,
Index: linux-2.6.23-rc1/drivers/infiniband/hw/mthca/mthca_cq.c
===================================================================
--- linux-2.6.23-rc1.orig/drivers/infiniband/hw/mthca/mthca_cq.c 2007-08-02 17:14:45.000000000 +0300
+++ linux-2.6.23-rc1/drivers/infiniband/hw/mthca/mthca_cq.c 2007-08-02 17:15:41.000000000 +0300
@@ -646,6 +646,9 @@ static inline int mthca_poll_one(struct
entry->pkey_index = be32_to_cpu(cqe->imm_etype_pkey_eec) >> 16;
entry->wc_flags |= be16_to_cpu(cqe->sl_g_mlpath) & 0x80 ?
IB_WC_GRH : 0;
+ entry->checksum_ok = (be16_to_cpu(cqe->sl_g_mlpath) & 0x100) != 0;
+ entry->checksum = (be32_to_cpu(cqe->rqpn) >> 24) |
+ ((be32_to_cpu(cqe->my_ee) >> 16) & 0xff00);
}
entry->status = IB_WC_SUCCESS;
Index: linux-2.6.23-rc1/drivers/infiniband/hw/mthca/mthca_main.c
===================================================================
--- linux-2.6.23-rc1.orig/drivers/infiniband/hw/mthca/mthca_main.c 2007-08-02 17:14:45.000000000 +0300
+++ linux-2.6.23-rc1/drivers/infiniband/hw/mthca/mthca_main.c 2007-08-02 17:15:41.000000000 +0300
@@ -289,6 +289,10 @@ static int mthca_dev_lim(struct mthca_de
if (dev_lim->flags & DEV_LIM_FLAG_SRQ)
mdev->mthca_flags |= MTHCA_FLAG_SRQ;
+ if (mthca_is_memfree(mdev))
+ if (dev_lim->flags & DEV_LIM_FLAG_IPOIB_CSUM)
+ mdev->device_cap_flags |= IB_DEVICE_IP_CSUM;
+
return 0;
}
Index: linux-2.6.23-rc1/drivers/infiniband/hw/mthca/mthca_qp.c
===================================================================
--- linux-2.6.23-rc1.orig/drivers/infiniband/hw/mthca/mthca_qp.c 2007-08-02 17:14:45.000000000 +0300
+++ linux-2.6.23-rc1/drivers/infiniband/hw/mthca/mthca_qp.c 2007-08-02 17:15:41.000000000 +0300
@@ -2024,6 +2024,10 @@ int mthca_arbel_post_send(struct ib_qp *
cpu_to_be32(MTHCA_NEXT_CQ_UPDATE) : 0) |
((wr->send_flags & IB_SEND_SOLICITED) ?
cpu_to_be32(MTHCA_NEXT_SOLICIT) : 0) |
+ ((wr->send_flags & IB_SEND_IP_CSUM) ?
+ cpu_to_be32(MTHCA_NEXT_IP_CSUM) : 0) |
+ ((wr->send_flags & IB_SEND_UDP_TCP_CSUM) ?
+ cpu_to_be32(MTHCA_NEXT_TCP_UDP_CSUM) : 0) |
cpu_to_be32(1);
if (wr->opcode == IB_WR_SEND_WITH_IMM ||
wr->opcode == IB_WR_RDMA_WRITE_WITH_IMM)
Index: linux-2.6.23-rc1/drivers/infiniband/hw/mthca/mthca_wqe.h
===================================================================
--- linux-2.6.23-rc1.orig/drivers/infiniband/hw/mthca/mthca_wqe.h 2007-08-02 17:14:45.000000000 +0300
+++ linux-2.6.23-rc1/drivers/infiniband/hw/mthca/mthca_wqe.h 2007-08-02 17:15:41.000000000 +0300
@@ -38,14 +38,15 @@
#include <linux/types.h>
enum {
- MTHCA_NEXT_DBD = 1 << 7,
- MTHCA_NEXT_FENCE = 1 << 6,
- MTHCA_NEXT_CQ_UPDATE = 1 << 3,
- MTHCA_NEXT_EVENT_GEN = 1 << 2,
- MTHCA_NEXT_SOLICIT = 1 << 1,
-
- MTHCA_MLX_VL15 = 1 << 17,
- MTHCA_MLX_SLR = 1 << 16
+ MTHCA_NEXT_DBD = 1 << 7,
+ MTHCA_NEXT_FENCE = 1 << 6,
+ MTHCA_NEXT_CQ_UPDATE = 1 << 3,
+ MTHCA_NEXT_EVENT_GEN = 1 << 2,
+ MTHCA_NEXT_SOLICIT = 1 << 1,
+ MTHCA_NEXT_IP_CSUM = 1 << 4,
+ MTHCA_NEXT_TCP_UDP_CSUM = 1 << 5,
+ MTHCA_MLX_VL15 = 1 << 17,
+ MTHCA_MLX_SLR = 1 << 16
};
enum {
Index: linux-2.6.23-rc1/include/rdma/ib_verbs.h
===================================================================
--- linux-2.6.23-rc1.orig/include/rdma/ib_verbs.h 2007-07-10 21:56:30.000000000 +0300
+++ linux-2.6.23-rc1/include/rdma/ib_verbs.h 2007-08-02 17:25:03.000000000 +0300
@@ -93,7 +93,8 @@ enum ib_device_cap_flags {
IB_DEVICE_N_NOTIFY_CQ = (1<<14),
IB_DEVICE_ZERO_STAG = (1<<15),
IB_DEVICE_SEND_W_INV = (1<<16),
- IB_DEVICE_MEM_WINDOW = (1<<17)
+ IB_DEVICE_MEM_WINDOW = (1<<17),
+ IB_DEVICE_IP_CSUM = (1<<18)
};
enum ib_atomic_cap {
@@ -429,6 +430,8 @@ struct ib_wc {
u8 sl;
u8 dlid_path_bits;
u8 port_num; /* valid only for DR SMPs on switches */
+ u8 checksum_ok;
+ u16 checksum;
};
enum ib_cq_notify_flags {
@@ -613,7 +616,9 @@ enum ib_send_flags {
IB_SEND_FENCE = 1,
IB_SEND_SIGNALED = (1<<1),
IB_SEND_SOLICITED = (1<<2),
- IB_SEND_INLINE = (1<<3)
+ IB_SEND_INLINE = (1<<3),
+ IB_SEND_IP_CSUM = (1<<4),
+ IB_SEND_UDP_TCP_CSUM = (1<<5)
};
struct ib_sge {
More information about the general
mailing list