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authorDamjan Marion <damarion@cisco.com>2016-11-23 23:26:47 +0100
committerJohn Lo <loj@cisco.com>2016-11-24 03:50:06 +0000
commit4c6b34f742d7478f8f8f862c05a33ba43b2c8699 (patch)
tree3a20f0f2d844f8be5ee06fd80ed172ef5fefc41c
parente0a2d1796a043001dcb97f9a2a870f7f9d82f44c (diff)
l2: remove unused l3 packet type discovery in l2 path
This costs significant amount of cycles and it is not used by anybody. Change-Id: I42a0306aa7c254292621bdaa09b736421662d540 Signed-off-by: Damjan Marion <damarion@cisco.com>
-rw-r--r--vnet/vnet/l2/l2_input.c39
-rw-r--r--vnet/vnet/l2/l2_input.h40
2 files changed, 1 insertions, 78 deletions
diff --git a/vnet/vnet/l2/l2_input.c b/vnet/vnet/l2/l2_input.c
index 9515250decf..dfb7bce2f36 100644
--- a/vnet/vnet/l2/l2_input.c
+++ b/vnet/vnet/l2/l2_input.c
@@ -159,45 +159,8 @@ classify_and_dispatch (vlib_main_t * vm,
h0 = vlib_buffer_get_current (b0);
l3h0 = (u8 *) h0 + vnet_buffer (b0)->l2.l2_len;
- /*
- * Determine L3 packet type. Only need to check the common types.
- * Used to filter out features that don't apply to common packets.
- */
ethertype = clib_net_to_host_u16 (get_u16 (l3h0 - 2));
- if (ethertype == ETHERNET_TYPE_IP4)
- {
- protocol = ((ip4_header_t *) l3h0)->protocol;
- if ((protocol == IP_PROTOCOL_UDP) || (protocol == IP_PROTOCOL_TCP))
- {
- feat_mask = IP_UDP_TCP_FEAT_MASK;
- }
- else
- {
- feat_mask = IP4_FEAT_MASK;
- }
- }
- else if (ethertype == ETHERNET_TYPE_IP6)
- {
- protocol = ((ip6_header_t *) l3h0)->protocol;
- /* Don't bother checking for extension headers for now */
- if ((protocol == IP_PROTOCOL_UDP) || (protocol == IP_PROTOCOL_TCP))
- {
- feat_mask = IP_UDP_TCP_FEAT_MASK;
- }
- else
- {
- feat_mask = IP6_FEAT_MASK;
- }
- }
- else if (ethertype == ETHERNET_TYPE_MPLS_UNICAST)
- {
- feat_mask = IP6_FEAT_MASK;
- }
- else
- {
- /* allow all features */
- feat_mask = ~0;
- }
+ feat_mask = ~0;
/* determine layer2 kind for stat and mask */
mcast_dmac = ethernet_address_cast (h0->dst_address);
diff --git a/vnet/vnet/l2/l2_input.h b/vnet/vnet/l2/l2_input.h
index b4e90af550c..f3fada6a7d3 100644
--- a/vnet/vnet/l2/l2_input.h
+++ b/vnet/vnet/l2/l2_input.h
@@ -95,7 +95,6 @@ l2input_bd_config_from_index (l2input_main_t * l2im, u32 bd_index)
#define foreach_l2input_feat \
_(DROP, "feature-bitmap-drop") \
_(XCONNECT, "l2-output") \
- _(IPIW, "feature-bitmap-drop") \
_(FLOOD, "l2-flood") \
_(ARP_TERM, "arp-term-l2bd") \
_(UU_FLOOD, "l2-flood") \
@@ -104,17 +103,7 @@ l2input_bd_config_from_index (l2input_main_t * l2im, u32 bd_index)
_(LEARN, "l2-learn") \
_(VTR, "l2-input-vtr") \
_(VPATH, "vpath-input-l2") \
- _(CTRL_PKT, "feature-bitmap-drop") \
- _(L2PT, "feature-bitmap-drop") \
- _(IGMP_SNOOP, "feature-bitmap-drop") \
- _(MLD_SNOOP, "feature-bitmap-drop") \
- _(DHCP_SNOOP, "feature-bitmap-drop") \
- _(DAI, "feature-bitmap-drop") \
- _(IPSG, "feature-bitmap-drop") \
_(ACL, "l2-input-acl") \
- _(QOS, "feature-bitmap-drop") \
- _(CFM, "feature-bitmap-drop") \
- _(SPAN, "feature-bitmap-drop") \
_(POLICER_CLAS, "l2-policer-classify") \
_(INPUT_CLASSIFY, "l2-input-classify")
@@ -175,35 +164,6 @@ bd_feature_arp_term (l2_bridge_domain_t * bd_config)
/** Masks for eliminating features that do not apply to a packet */
-#define IP4_FEAT_MASK ~(L2INPUT_FEAT_CTRL_PKT | \
- L2INPUT_FEAT_MLD_SNOOP | \
- L2INPUT_FEAT_L2PT | \
- L2INPUT_FEAT_CFM | \
- L2INPUT_FEAT_DAI)
-
-#define IP6_FEAT_MASK ~(L2INPUT_FEAT_CTRL_PKT | \
- L2INPUT_FEAT_IGMP_SNOOP | \
- L2INPUT_FEAT_L2PT | \
- L2INPUT_FEAT_CFM | \
- L2INPUT_FEAT_DAI)
-
-#define IP_UDP_TCP_FEAT_MASK ~(L2INPUT_FEAT_CTRL_PKT | \
- L2INPUT_FEAT_L2PT | \
- L2INPUT_FEAT_IGMP_SNOOP | \
- L2INPUT_FEAT_MLD_SNOOP | \
- L2INPUT_FEAT_DHCP_SNOOP | \
- L2INPUT_FEAT_CFM | \
- L2INPUT_FEAT_DAI)
-
-#define MPLS_FEAT_MASK ~(L2INPUT_FEAT_CTRL_PKT | \
- L2INPUT_FEAT_L2PT | \
- L2INPUT_FEAT_IGMP_SNOOP | \
- L2INPUT_FEAT_MLD_SNOOP | \
- L2INPUT_FEAT_DHCP_SNOOP | \
- L2INPUT_FEAT_CFM | \
- L2INPUT_FEAT_DAI)
-
-
/** Get a pointer to the config for the given interface */
l2_input_config_t *l2input_intf_config (u32 sw_if_index);