diff options
| author |   Zhiyong Yang <zhiyong.yang@intel.com> | 2019-03-20 03:35:39 -0400 |
|---|---|---|
| committer |   Damjan Marion <dmarion@me.com> | 2019-04-23 07:13:46 +0000 |
| commit | 2c1904fa8efffabfadd7f09edb4da98c2e172cd6 (patch) | |
| tree | 73c17d9d0ec7ff6eb25d6e581829034b0d6f0809 | |
| parent | f92211672646dccdaf50ec7cea9197e15dca03ed (diff) | |
dpdk_esp_encrypt: add to prefetch data
The memory areas storing vlib_buffer_t and ip4|6_and_esp_header_t
are not prefetched. The patch help dpdk_esp_encrypt to reduce 18
clocks/pkt from 149 to 131 on Haswell when running IPsec in tunnel
mode.
Change-Id: I4f4e9e2b3982a4b7810cab8ed828a5e4631f8f8c
Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>
| -rw-r--r-- | src/plugins/dpdk/ipsec/esp_encrypt.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/src/plugins/dpdk/ipsec/esp_encrypt.c b/src/plugins/dpdk/ipsec/esp_encrypt.c index 908f846e315..653c158fb94 100644 --- a/src/plugins/dpdk/ipsec/esp_encrypt.c +++ b/src/plugins/dpdk/ipsec/esp_encrypt.c @@ -155,8 +155,8 @@ dpdk_esp_encrypt_inline (vlib_main_t * vm, while (n_left_from > 0 && n_left_to_next > 0) { clib_error_t *error; - u32 bi0; - vlib_buffer_t *b0 = 0; + u32 bi0, bi1; + vlib_buffer_t *b0, *b1; u32 sa_index0; ip4_and_esp_header_t *ih0, *oh0 = 0; ip6_and_esp_header_t *ih6_0, *oh6_0 = 0; @@ -169,7 +169,7 @@ dpdk_esp_encrypt_inline (vlib_main_t * vm, u8 trunc_size; u16 rewrite_len; u16 udp_encap_adv = 0; - struct rte_mbuf *mb0 = 0; + struct rte_mbuf *mb0; struct rte_crypto_op *op; u16 res_idx; @@ -188,6 +188,16 @@ dpdk_esp_encrypt_inline (vlib_main_t * vm, /* mb0 */ CLIB_PREFETCH (mb0, CLIB_CACHE_LINE_BYTES, STORE); + if (n_left_from > 1) + { + bi1 = from[1]; + b1 = vlib_get_buffer (vm, bi1); + + CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, LOAD); + CLIB_PREFETCH (b1->data - CLIB_CACHE_LINE_BYTES, + CLIB_CACHE_LINE_BYTES, STORE); + } + op = ops[0]; ops += 1; ASSERT (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED); |