summaryrefslogtreecommitdiffstats
path: root/src/vnet/vxlan/decap.c
diff options
context:
space:
mode:
authorNick Zavaritsky <nick.zavaritsky@emnify.com>2020-02-27 15:54:58 +0000
committerJohn Lo <loj@cisco.com>2020-03-03 16:15:15 +0000
commit27518c2ffd0ef75e973a64870da0e3339f39ccce (patch)
tree3fb7afdb06963ae3ef36cc74bfe33e10b8668d5d /src/vnet/vxlan/decap.c
parent297d288ed653abac9d719013c4ead5215230e7da (diff)
geneve gtpu vxlan vxlan-gpe: VRF-aware bypass node
Bypass node MUST NOT intercept a packet if destination IP doesn’t match a local address. However IP address interpretation depends on the VRF, hence bypass node must take that into account. This patch also factors-out common VTEP management and checking code. Type: improvement Signed-off-by: Nick Zavaritsky <nick.zavaritsky@emnify.com> Change-Id: I5665d94882bbf45d15f8da140c7ada528ec7fa94
Diffstat (limited to 'src/vnet/vxlan/decap.c')
-rw-r--r--src/vnet/vxlan/decap.c78
1 files changed, 21 insertions, 57 deletions
diff --git a/src/vnet/vxlan/decap.c b/src/vnet/vxlan/decap.c
index 764dfca4820..3b428be35e4 100644
--- a/src/vnet/vxlan/decap.c
+++ b/src/vnet/vxlan/decap.c
@@ -46,20 +46,6 @@ format_vxlan_rx_trace (u8 * s, va_list * args)
t->tunnel_index, t->vni, t->next_index, t->error);
}
-always_inline u32
-buf_fib_index (vlib_buffer_t * b, u32 is_ip4)
-{
- u32 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
- if (sw_if_index != (u32) ~ 0)
- return sw_if_index;
-
- u32 *fib_index_by_sw_if_index = is_ip4 ?
- ip4_main.fib_index_by_sw_if_index : ip6_main.fib_index_by_sw_if_index;
- sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
-
- return vec_elt (fib_index_by_sw_if_index, sw_if_index);
-}
-
typedef vxlan4_tunnel_key_t last_tunnel_cache4;
static const vxlan_decap_info_t decap_not_found = {
@@ -246,8 +232,8 @@ vxlan_input (vlib_main_t * vm,
vlib_buffer_advance (b[0], sizeof *vxlan0);
vlib_buffer_advance (b[1], sizeof *vxlan1);
- u32 fi0 = buf_fib_index (b[0], is_ip4);
- u32 fi1 = buf_fib_index (b[1], is_ip4);
+ u32 fi0 = vlib_buffer_get_ip_fib_index (b[0], is_ip4);
+ u32 fi1 = vlib_buffer_get_ip_fib_index (b[1], is_ip4);
vxlan_decap_info_t di0 = is_ip4 ?
vxlan4_find_tunnel (vxm, &last4, fi0, ip4_0, vxlan0, &stats_if0) :
@@ -349,7 +335,7 @@ vxlan_input (vlib_main_t * vm,
/* pop (ip, udp, vxlan) */
vlib_buffer_advance (b[0], sizeof (*vxlan0));
- u32 fi0 = buf_fib_index (b[0], is_ip4);
+ u32 fi0 = vlib_buffer_get_ip_fib_index (b[0], is_ip4);
vxlan_decap_info_t di0 = is_ip4 ?
vxlan4_find_tunnel (vxm, &last4, fi0, ip4_0, vxlan0, &stats_if0) :
@@ -468,8 +454,10 @@ ip_vxlan_bypass_inline (vlib_main_t * vm,
u32 *from, *to_next, n_left_from, n_left_to_next, next_index;
vlib_node_runtime_t *error_node =
vlib_node_get_runtime (vm, ip4_input_node.index);
- ip4_address_t addr4; /* last IPv4 address matching a local VTEP address */
- ip6_address_t addr6; /* last IPv6 address matching a local VTEP address */
+ vtep4_key_t last_vtep4; /* last IPv4 address / fib index
+ matching a local VTEP address */
+ vtep6_key_t last_vtep6; /* last IPv6 address / fib index
+ matching a local VTEP address */
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
@@ -479,9 +467,9 @@ ip_vxlan_bypass_inline (vlib_main_t * vm,
ip4_forward_next_trace (vm, node, frame, VLIB_TX);
if (is_ip4)
- addr4.data_u32 = ~0;
+ vtep4_key_init (&last_vtep4);
else
- ip6_address_set_zero (&addr6);
+ vtep6_key_init (&last_vtep6);
while (n_left_from > 0)
{
@@ -565,21 +553,13 @@ ip_vxlan_bypass_inline (vlib_main_t * vm,
/* Validate DIP against VTEPs */
if (is_ip4)
{
- if (addr4.as_u32 != ip40->dst_address.as_u32)
- {
- if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
- goto exit0; /* no local VTEP for VXLAN packet */
- addr4 = ip40->dst_address;
- }
+ if (!vtep4_check (&vxm->vtep_table, b0, ip40, &last_vtep4))
+ goto exit0; /* no local VTEP for VXLAN packet */
}
else
{
- if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
- {
- if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
- goto exit0; /* no local VTEP for VXLAN packet */
- addr6 = ip60->dst_address;
- }
+ if (!vtep6_check (&vxm->vtep_table, b0, ip60, &last_vtep6))
+ goto exit0; /* no local VTEP for VXLAN packet */
}
flags0 = b0->flags;
@@ -651,21 +631,13 @@ ip_vxlan_bypass_inline (vlib_main_t * vm,
/* Validate DIP against VTEPs */
if (is_ip4)
{
- if (addr4.as_u32 != ip41->dst_address.as_u32)
- {
- if (!hash_get (vxm->vtep4, ip41->dst_address.as_u32))
- goto exit1; /* no local VTEP for VXLAN packet */
- addr4 = ip41->dst_address;
- }
+ if (!vtep4_check (&vxm->vtep_table, b1, ip41, &last_vtep4))
+ goto exit1; /* no local VTEP for VXLAN packet */
}
else
{
- if (!ip6_address_is_equal (&addr6, &ip61->dst_address))
- {
- if (!hash_get_mem (vxm->vtep6, &ip61->dst_address))
- goto exit1; /* no local VTEP for VXLAN packet */
- addr6 = ip61->dst_address;
- }
+ if (!vtep6_check (&vxm->vtep_table, b1, ip61, &last_vtep6))
+ goto exit1; /* no local VTEP for VXLAN packet */
}
flags1 = b1->flags;
@@ -773,21 +745,13 @@ ip_vxlan_bypass_inline (vlib_main_t * vm,
/* Validate DIP against VTEPs */
if (is_ip4)
{
- if (addr4.as_u32 != ip40->dst_address.as_u32)
- {
- if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
- goto exit; /* no local VTEP for VXLAN packet */
- addr4 = ip40->dst_address;
- }
+ if (!vtep4_check (&vxm->vtep_table, b0, ip40, &last_vtep4))
+ goto exit; /* no local VTEP for VXLAN packet */
}
else
{
- if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
- {
- if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
- goto exit; /* no local VTEP for VXLAN packet */
- addr6 = ip60->dst_address;
- }
+ if (!vtep6_check (&vxm->vtep_table, b0, ip60, &last_vtep6))
+ goto exit; /* no local VTEP for VXLAN packet */
}
flags0 = b0->flags;