The graph node running IPsec encap in tunnel mode can be saved
from 65.8 to 57.3 clocks/pkt on Haswell platform.
The graph node can be saved 10 clockes/pkt on DVN as well in the
same case.
Change-Id: I4804879c4d489465ee56a8f8317596b7e79b9331
Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>
while (n_left_from > 0)
{
while (n_left_from > 0)
{
- u32 bi0, pi0;
- vlib_buffer_t *b0;
+ u32 bi0, pi0, bi1;
+ vlib_buffer_t *b0, *b1;
ipsec_policy_t *p0;
ip4_header_t *ip0;
ip6_header_t *ip6_0 = 0;
ipsec_policy_t *p0;
ip4_header_t *ip0;
ip6_header_t *ip6_0 = 0;
u64 bytes0;
bi0 = from[0];
u64 bytes0;
bi0 = from[0];
b0 = vlib_get_buffer (vm, bi0);
b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
iph_offset = vnet_buffer (b0)->ip.save_rewrite_length;
ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0)
+ iph_offset);
sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX];
iph_offset = vnet_buffer (b0)->ip.save_rewrite_length;
ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0)
+ iph_offset);
+ if (n_left_from > 1)
+ {
+ CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES * 2, STORE);
+ vlib_prefetch_buffer_data (b1, LOAD);
+ }
/* lookup for SPD only if sw_if_index is changed */
if (PREDICT_FALSE (last_sw_if_index != sw_if_index0))
/* lookup for SPD only if sw_if_index is changed */
if (PREDICT_FALSE (last_sw_if_index != sw_if_index0))