From fccac5802da25840379986177ed1b653f30713ed Mon Sep 17 00:00:00 2001 From: Pieter Jansen van Vuuren Date: Thu, 27 Jun 2019 16:12:43 -0700 Subject: nfp: flower: add GRE encap action support Add new GRE encapsulation support, which allows offload of filters using tunnel_key set action in combination with actions that egress to GRE type ports. Signed-off-by: Pieter Jansen van Vuuren Signed-off-by: Jakub Kicinski Reviewed-by: John Hurley Signed-off-by: David S. Miller --- drivers/net/ethernet/netronome/nfp/flower/action.c | 33 ++++++++++++++++++---- 1 file changed, 28 insertions(+), 5 deletions(-) (limited to 'drivers/net/ethernet/netronome') diff --git a/drivers/net/ethernet/netronome/nfp/flower/action.c b/drivers/net/ethernet/netronome/nfp/flower/action.c index 88fedb5ada97..b6bd31fe44b2 100644 --- a/drivers/net/ethernet/netronome/nfp/flower/action.c +++ b/drivers/net/ethernet/netronome/nfp/flower/action.c @@ -170,13 +170,36 @@ nfp_fl_output(struct nfp_app *app, struct nfp_fl_output *output, return 0; } +static bool +nfp_flower_tun_is_gre(struct tc_cls_flower_offload *flow, int start_idx) +{ + struct flow_action_entry *act = flow->rule->action.entries; + int num_act = flow->rule->action.num_entries; + int act_idx; + + /* Preparse action list for next mirred or redirect action */ + for (act_idx = start_idx + 1; act_idx < num_act; act_idx++) + if (act[act_idx].id == FLOW_ACTION_REDIRECT || + act[act_idx].id == FLOW_ACTION_MIRRED) + return netif_is_gretap(act[act_idx].dev); + + return false; +} + static enum nfp_flower_tun_type nfp_fl_get_tun_from_act(struct nfp_app *app, - const struct flow_action_entry *act) + struct tc_cls_flower_offload *flow, + const struct flow_action_entry *act, int act_idx) { const struct ip_tunnel_info *tun = act->tunnel; struct nfp_flower_priv *priv = app->priv; + /* Determine the tunnel type based on the egress netdev + * in the mirred action for tunnels without l4. + */ + if (nfp_flower_tun_is_gre(flow, act_idx)) + return NFP_FL_TUNNEL_GRE; + switch (tun->key.tp_dst) { case htons(IANA_VXLAN_UDP_PORT): return NFP_FL_TUNNEL_VXLAN; @@ -841,7 +864,7 @@ nfp_flower_loop_action(struct nfp_app *app, const struct flow_action_entry *act, enum nfp_flower_tun_type *tun_type, int *tun_out_cnt, int *out_cnt, u32 *csum_updated, struct nfp_flower_pedit_acts *set_act, - struct netlink_ext_ack *extack) + struct netlink_ext_ack *extack, int act_idx) { struct nfp_fl_set_ipv4_tun *set_tun; struct nfp_fl_pre_tunnel *pre_tun; @@ -896,7 +919,7 @@ nfp_flower_loop_action(struct nfp_app *app, const struct flow_action_entry *act, case FLOW_ACTION_TUNNEL_ENCAP: { const struct ip_tunnel_info *ip_tun = act->tunnel; - *tun_type = nfp_fl_get_tun_from_act(app, act); + *tun_type = nfp_fl_get_tun_from_act(app, flow, act, act_idx); if (*tun_type == NFP_FL_TUNNEL_NONE) { NL_SET_ERR_MSG_MOD(extack, "unsupported offload: unsupported tunnel type in action list"); return -EOPNOTSUPP; @@ -1022,8 +1045,8 @@ int nfp_flower_compile_action(struct nfp_app *app, memset(&set_act, 0, sizeof(set_act)); err = nfp_flower_loop_action(app, act, flow, nfp_flow, &act_len, netdev, &tun_type, &tun_out_cnt, - &out_cnt, &csum_updated, &set_act, - extack); + &out_cnt, &csum_updated, + &set_act, extack, i); if (err) return err; act_cnt++; -- cgit v1.2.3-59-g8ed1b