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Commit e0605d91 authored by Eli Cohen's avatar Eli Cohen Committed by Roland Dreier
Browse files

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: default avatarEli Cohen <eli@mellanox.co.il>
Signed-off-by: default avatarRoland Dreier <rolandd@cisco.com>
parent 7143740d

include/rdma/ib_verbs.h

+12 −2
Original line number Diff line number Diff line
@@ -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 {