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IB/core: Add IP checksum offload support 

Add a device capability to show when it can handle checksum offload.
Also add a send flag for inserting checksums and a csum_ok field to
the completion record.

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Eli Cohen 2008-01-30 18:30:57 +02:00 committed by Roland Dreier
parent 7143740d26
commit e0605d9199
1 changed files with 12 additions and 2 deletions
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14
include/rdma/ib_verbs.h
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@ -95,7 +95,15 @@ 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),
/*
* Devices should set IB_DEVICE_UD_IP_SUM if they support
* insertion of UDP and TCP checksum on outgoing UD IPoIB
* messages and can verify the validity of checksum for
* incoming messages. Setting this flag implies that the
* IPoIB driver may set NETIF_F_IP_CSUM for datagram mode.
*/
IB_DEVICE_UD_IP_CSUM = (1<<18),
};
enum ib_atomic_cap {
@ -431,6 +439,7 @@ struct ib_wc {
u8 sl;
u8 dlid_path_bits;
u8 port_num; /* valid only for DR SMPs on switches */
int csum_ok;
};
enum ib_cq_notify_flags {
@ -615,7 +624,8 @@ 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)
};
struct ib_sge {