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Commit 71ea5343 authored by Pieter Jansen van Vuuren's avatar Pieter Jansen van Vuuren Committed by David S. Miller
Browse files

nfp: flower: implement ip fragmentation match offload 



Implement ip fragmentation match offloading for both IPv4 and IPv6. Allows
offloading frag, nofrag, first and nofirstfrag classification.

Signed-off-by: default avatarPieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: default avatarSimon Horman <simon.horman@netronome.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 07e1671c

drivers/net/ethernet/netronome/nfp/flower/cmsg.h

+3 −0
Original line number Diff line number Diff line
@@ -61,6 +61,9 @@ 
#define NFP_FLOWER_MASK_MPLS_BOS	BIT(8)

#define NFP_FLOWER_MASK_MPLS_Q		BIT(0)



#define NFP_FL_IP_FRAG_FIRST		BIT(7)

#define NFP_FL_IP_FRAGMENTED		BIT(6)



/* Compressed HW representation of TCP Flags */

#define NFP_FL_TCP_FLAG_URG		BIT(4)

#define NFP_FL_TCP_FLAG_PSH		BIT(3)

drivers/net/ethernet/netronome/nfp/flower/match.c

+12 −0
Original line number Diff line number Diff line
@@ -190,6 +190,18 @@ nfp_flower_compile_ip_ext(struct nfp_flower_ip_ext *frame, 
		if (tcp_flags & TCPHDR_URG)

			frame->flags |= NFP_FL_TCP_FLAG_URG;

	}



	if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {

		struct flow_dissector_key_control *key;



		key = skb_flow_dissector_target(flow->dissector,

						FLOW_DISSECTOR_KEY_CONTROL,

						target);

		if (key->flags & FLOW_DIS_IS_FRAGMENT)

			frame->flags |= NFP_FL_IP_FRAGMENTED;

		if (key->flags & FLOW_DIS_FIRST_FRAG)

			frame->flags |= NFP_FL_IP_FRAG_FIRST;

	}

}



static void

drivers/net/ethernet/netronome/nfp/flower/offload.c

+15 −0
Original line number Diff line number Diff line
@@ -48,6 +48,10 @@ 
	(TCPHDR_FIN | TCPHDR_SYN | TCPHDR_RST | \

	 TCPHDR_PSH | TCPHDR_URG)



#define NFP_FLOWER_SUPPORTED_CTLFLAGS \

	(FLOW_DIS_IS_FRAGMENT | \

	 FLOW_DIS_FIRST_FRAG)



#define NFP_FLOWER_WHITELIST_DISSECTOR \

	(BIT(FLOW_DISSECTOR_KEY_CONTROL) | \

	 BIT(FLOW_DISSECTOR_KEY_BASIC) | \
@@ -322,6 +326,17 @@ nfp_flower_calculate_key_layers(struct nfp_app *app, 
		}

	}



	if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {

		struct flow_dissector_key_control *key_ctl;



		key_ctl = skb_flow_dissector_target(flow->dissector,

						    FLOW_DISSECTOR_KEY_CONTROL,

						    flow->key);



		if (key_ctl->flags & ~NFP_FLOWER_SUPPORTED_CTLFLAGS)

			return -EOPNOTSUPP;

	}



	ret_key_ls->key_layer = key_layer;

	ret_key_ls->key_layer_two = key_layer_two;

	ret_key_ls->key_size = key_size;