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nfp: add mpls match offloading support 

Previously MPLS match offloading was not supported. This patch enables
MPLS match offloading support for label, bos and tc fields.

Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pieter Jansen van Vuuren 2017-10-06 10:21:20 +02:00 committed by David S. Miller
parent 4e64b1ed15
commit bb055c198d
3 changed files with 21 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/ethernet/netronome/nfp/flower/cmsg.h
View File

@ -57,6 +57,11 @@
#define NFP_FLOWER_MASK_VLAN_CFI BIT(12)
#define NFP_FLOWER_MASK_VLAN_VID GENMASK(11, 0)
#define NFP_FLOWER_MASK_MPLS_LB GENMASK(31, 12)
#define NFP_FLOWER_MASK_MPLS_TC GENMASK(11, 9)
#define NFP_FLOWER_MASK_MPLS_BOS BIT(8)
#define NFP_FLOWER_MASK_MPLS_Q BIT(0)
#define NFP_FL_SC_ACT_DROP 0x80000000
#define NFP_FL_SC_ACT_USER 0x7D000000
#define NFP_FL_SC_ACT_POPV 0x6A000000

17
drivers/net/ethernet/netronome/nfp/flower/match.c
View File

@ -111,8 +111,21 @@ nfp_flower_compile_mac(struct nfp_flower_mac_mpls *frame,
ether_addr_copy(frame->mac_src, &addr->src[0]);
}
if (mask_version)
frame->mpls_lse = cpu_to_be32(~0);
if (dissector_uses_key(flow->dissector, FLOW_DISSECTOR_KEY_MPLS)) {
struct flow_dissector_key_mpls *mpls;
u32 t_mpls;
mpls = skb_flow_dissector_target(flow->dissector,
FLOW_DISSECTOR_KEY_MPLS,
target);
t_mpls = FIELD_PREP(NFP_FLOWER_MASK_MPLS_LB, mpls->mpls_label) |
FIELD_PREP(NFP_FLOWER_MASK_MPLS_TC, mpls->mpls_tc) |
FIELD_PREP(NFP_FLOWER_MASK_MPLS_BOS, mpls->mpls_bos) |
NFP_FLOWER_MASK_MPLS_Q;
frame->mpls_lse = cpu_to_be32(t_mpls);
}
}
static void

6
drivers/net/ethernet/netronome/nfp/flower/offload.c
View File

@ -57,6 +57,7 @@
BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) | \
BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) | \
BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) | \
BIT(FLOW_DISSECTOR_KEY_MPLS) | \
BIT(FLOW_DISSECTOR_KEY_IP))
#define NFP_FLOWER_WHITELIST_TUN_DISSECTOR \
@ -238,11 +239,6 @@ nfp_flower_calculate_key_layers(struct nfp_fl_key_ls *ret_key_ls,
case cpu_to_be16(ETH_P_ARP):
return -EOPNOTSUPP;
/* Currently we do not offload MPLS. */
case cpu_to_be16(ETH_P_MPLS_UC):
case cpu_to_be16(ETH_P_MPLS_MC):
return -EOPNOTSUPP;
/* Will be included in layer 2. */
case cpu_to_be16(ETH_P_8021Q):
break;