diff options
author | John Hurley <john.hurley@netronome.com> | 2019-07-23 15:34:01 +0100 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2019-07-23 13:52:51 -0700 |
commit | 35b7c70cc3b82c159c181f297a54d4bea6f4fd47 (patch) | |
tree | d15a5b5987d799d5b08d3a4b94d4041deeec777c /drivers/net/ethernet/netronome/nfp/flower/action.c | |
parent | nfp: flower: offload MPLS push action (diff) | |
download | linux-dev-35b7c70cc3b82c159c181f297a54d4bea6f4fd47.tar.xz linux-dev-35b7c70cc3b82c159c181f297a54d4bea6f4fd47.zip |
nfp: flower: offload MPLS pop action
Recent additions to the kernel include a TC action module to manipulate
MPLS headers on packets. Such actions are available to offload via the
flow_offload intermediate representation API.
Modify the NFP driver to allow the offload of MPLS pop actions to
firmware. The act_mpls TC module enforces that the next protocol is
supplied along with the pop action. Passing this to firmware allows it
to properly rebuild the underlying packet after the pop.
Signed-off-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/netronome/nfp/flower/action.c')
-rw-r--r-- | drivers/net/ethernet/netronome/nfp/flower/action.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/flower/action.c b/drivers/net/ethernet/netronome/nfp/flower/action.c index 9e18bec7b346..7f288ae4052b 100644 --- a/drivers/net/ethernet/netronome/nfp/flower/action.c +++ b/drivers/net/ethernet/netronome/nfp/flower/action.c @@ -59,6 +59,17 @@ nfp_fl_push_mpls(struct nfp_fl_push_mpls *push_mpls, return 0; } +static void +nfp_fl_pop_mpls(struct nfp_fl_pop_mpls *pop_mpls, + const struct flow_action_entry *act) +{ + size_t act_size = sizeof(struct nfp_fl_pop_mpls); + + pop_mpls->head.jump_id = NFP_FL_ACTION_OPCODE_POP_MPLS; + pop_mpls->head.len_lw = act_size >> NFP_FL_LW_SIZ; + pop_mpls->ethtype = act->mpls_pop.proto; +} + static void nfp_fl_pop_vlan(struct nfp_fl_pop_vlan *pop_vlan) { size_t act_size = sizeof(struct nfp_fl_pop_vlan); @@ -905,6 +916,7 @@ nfp_flower_loop_action(struct nfp_app *app, const struct flow_action_entry *act, struct nfp_fl_push_vlan *psh_v; struct nfp_fl_push_mpls *psh_m; struct nfp_fl_pop_vlan *pop_v; + struct nfp_fl_pop_mpls *pop_m; int err; switch (act->id) { @@ -1025,6 +1037,19 @@ nfp_flower_loop_action(struct nfp_app *app, const struct flow_action_entry *act, return err; *a_len += sizeof(struct nfp_fl_push_mpls); break; + case FLOW_ACTION_MPLS_POP: + if (*a_len + + sizeof(struct nfp_fl_pop_mpls) > NFP_FL_MAX_A_SIZ) { + NL_SET_ERR_MSG_MOD(extack, "unsupported offload: maximum allowed action list size exceeded at pop MPLS"); + return -EOPNOTSUPP; + } + + pop_m = (struct nfp_fl_pop_mpls *)&nfp_fl->action_data[*a_len]; + nfp_fl->meta.shortcut = cpu_to_be32(NFP_FL_SC_ACT_NULL); + + nfp_fl_pop_mpls(pop_m, act); + *a_len += sizeof(struct nfp_fl_pop_mpls); + break; default: /* Currently we do not handle any other actions. */ NL_SET_ERR_MSG_MOD(extack, "unsupported offload: unsupported action in action list"); |