Add checksum offload support to the core
Signed-off-by: Eli Cohen <[EMAIL PROTECTED]>
---
A device that publishes IB_DEVICE_IP_CSUM actually supports
calculating checksum on transmit and provides indication whether
the checksum is OK on receive.
Index: linux-2.6.23-rc1/include/rdma/ib_verbs.h
===================================================================
--- linux-2.6.23-rc1.orig/include/rdma/ib_verbs.h 2007-08-15
20:50:16.000000000 +0300
+++ linux-2.6.23-rc1/include/rdma/ib_verbs.h 2007-08-15
20:50:28.000000000 +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 */
+ u16 csum;
+ int csum_ok;
};
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 {
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