diff options
author | 2019-08-12 14:24:39 +0200 | |
---|---|---|
committer | 2019-09-03 10:15:07 +0000 | |
commit | f98993aaa124f9b3c23be6fff306abcd86b71f6d (patch) | |
tree | c5b44e78449733071c1be704871e87321d746894 /src/plugins/nat/nat44_handoff.c | |
parent | e48f5574f7a7b183ecb02520989a89aba57f89da (diff) |
nat: handoff traffic matching for dynamic NAT
Type: feature
Change-Id: I5c5af6f9acb340cc674323305104b8ce23e6d21d
Signed-off-by: Filip Varga <fivarga@cisco.com>
(cherry picked from commit 22bb417e91c7bdf639b24b5edd321028f56ea04a)
Diffstat (limited to 'src/plugins/nat/nat44_handoff.c')
-rw-r--r-- | src/plugins/nat/nat44_handoff.c | 88 |
1 files changed, 49 insertions, 39 deletions
diff --git a/src/plugins/nat/nat44_handoff.c b/src/plugins/nat/nat44_handoff.c index 04590e409ac..c97c958d2a9 100644 --- a/src/plugins/nat/nat44_handoff.c +++ b/src/plugins/nat/nat44_handoff.c @@ -29,6 +29,7 @@ typedef struct u32 next_worker_index; u32 trace_index; u8 in2out; + u8 output; } nat44_handoff_trace_t; #define foreach_nat44_handoff_error \ @@ -57,12 +58,13 @@ format_nat44_handoff_trace (u8 * s, va_list * args) CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); nat44_handoff_trace_t *t = va_arg (*args, nat44_handoff_trace_t *); - char *tag; + char *tag, *output; tag = t->in2out ? "IN2OUT" : "OUT2IN"; + output = t->output ? "OUTPUT-FEATURE" : ""; s = - format (s, "NAT44_%s_WORKER_HANDOFF: next-worker %d trace index %d", tag, - t->next_worker_index, t->trace_index); + format (s, "NAT44_%s_WORKER_HANDOFF %s: next-worker %d trace index %d", + tag, output, t->next_worker_index, t->trace_index); return s; } @@ -101,8 +103,8 @@ nat44_worker_handoff_fn_inline (vlib_main_t * vm, while (n_left_from >= 4) { u32 sw_if_index0, sw_if_index1, sw_if_index2, sw_if_index3; - u32 rx_fib_index0 = 0, rx_fib_index1 = 0, - rx_fib_index2 = 0, rx_fib_index3 = 0; + u32 rx_fib_index0, rx_fib_index1, rx_fib_index2, rx_fib_index3; + u32 iph_offset0 = 0, iph_offset1 = 0, iph_offset2 = 0, iph_offset3 = 0; ip4_header_t *ip0, *ip1, *ip2, *ip3; if (PREDICT_TRUE (n_left_from >= 8)) @@ -117,32 +119,37 @@ nat44_worker_handoff_fn_inline (vlib_main_t * vm, CLIB_PREFETCH (&b[7]->data, CLIB_CACHE_LINE_BYTES, STORE); } - ip0 = vlib_buffer_get_current (b[0]); - ip1 = vlib_buffer_get_current (b[1]); - ip2 = vlib_buffer_get_current (b[2]); - ip3 = vlib_buffer_get_current (b[3]); - - if (PREDICT_FALSE (is_in2out)) + if (is_output) { - sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_RX]; - sw_if_index1 = vnet_buffer (b[1])->sw_if_index[VLIB_RX]; - sw_if_index2 = vnet_buffer (b[2])->sw_if_index[VLIB_RX]; - sw_if_index3 = vnet_buffer (b[3])->sw_if_index[VLIB_RX]; - - rx_fib_index0 = - ip4_fib_table_get_index_for_sw_if_index (sw_if_index0); - rx_fib_index1 = - ip4_fib_table_get_index_for_sw_if_index (sw_if_index1); - rx_fib_index2 = - ip4_fib_table_get_index_for_sw_if_index (sw_if_index2); - rx_fib_index3 = - ip4_fib_table_get_index_for_sw_if_index (sw_if_index3); + iph_offset0 = vnet_buffer (b[0])->ip.save_rewrite_length; + iph_offset1 = vnet_buffer (b[1])->ip.save_rewrite_length; + iph_offset2 = vnet_buffer (b[2])->ip.save_rewrite_length; + iph_offset3 = vnet_buffer (b[3])->ip.save_rewrite_length; } - ti[0] = get_worker (ip0, rx_fib_index0); - ti[1] = get_worker (ip1, rx_fib_index1); - ti[2] = get_worker (ip2, rx_fib_index2); - ti[3] = get_worker (ip3, rx_fib_index3); + ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b[0]) + + iph_offset0); + ip1 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b[1]) + + iph_offset1); + ip2 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b[2]) + + iph_offset2); + ip3 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b[3]) + + iph_offset3); + + sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_RX]; + sw_if_index1 = vnet_buffer (b[1])->sw_if_index[VLIB_RX]; + sw_if_index2 = vnet_buffer (b[2])->sw_if_index[VLIB_RX]; + sw_if_index3 = vnet_buffer (b[3])->sw_if_index[VLIB_RX]; + + rx_fib_index0 = ip4_fib_table_get_index_for_sw_if_index (sw_if_index0); + rx_fib_index1 = ip4_fib_table_get_index_for_sw_if_index (sw_if_index1); + rx_fib_index2 = ip4_fib_table_get_index_for_sw_if_index (sw_if_index2); + rx_fib_index3 = ip4_fib_table_get_index_for_sw_if_index (sw_if_index3); + + ti[0] = get_worker (ip0, rx_fib_index0, is_output); + ti[1] = get_worker (ip1, rx_fib_index1, is_output); + ti[2] = get_worker (ip2, rx_fib_index2, is_output); + ti[3] = get_worker (ip3, rx_fib_index3, is_output); if (ti[0] == thread_index) same_worker++; @@ -172,19 +179,21 @@ nat44_worker_handoff_fn_inline (vlib_main_t * vm, while (n_left_from > 0) { u32 sw_if_index0; - u32 rx_fib_index0 = 0; + u32 rx_fib_index0; + u32 iph_offset0 = 0; ip4_header_t *ip0; - ip0 = vlib_buffer_get_current (b[0]); - if (PREDICT_FALSE (is_in2out)) - { - sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_RX]; - rx_fib_index0 = - ip4_fib_table_get_index_for_sw_if_index (sw_if_index0); - } + if (is_output) + iph_offset0 = vnet_buffer (b[0])->ip.save_rewrite_length; + + ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b[0]) + + iph_offset0); + + sw_if_index0 = vnet_buffer (b[0])->sw_if_index[VLIB_RX]; + rx_fib_index0 = ip4_fib_table_get_index_for_sw_if_index (sw_if_index0); - ti[0] = get_worker (ip0, rx_fib_index0); + ti[0] = get_worker (ip0, rx_fib_index0, is_output); if (ti[0] == thread_index) same_worker++; @@ -211,9 +220,10 @@ nat44_worker_handoff_fn_inline (vlib_main_t * vm, t->next_worker_index = ti[0]; t->trace_index = vlib_buffer_get_trace_index (b[0]); t->in2out = is_in2out; + t->output = is_output; - b++; - ti++; + b += 1; + ti += 1; } else break; |