d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

net/iavf: add RSS hash parsing in AVX path

Browse Source 
Support RSS hash parsing from Flex Rx
descriptor in AVX data path.

Signed-off-by: Leyi Rong <leyi.rong@intel.com>
Reviewed-by: Qi Zhang <qi.z.zhang@intel.com>
This commit is contained in:
Leyi Rong 2020-04-20 14:16:24 +08:00 committed by Ferruh Yigit
parent 75c348b06a
commit f978c1c9b3
1 changed files with 92 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

94
drivers/net/iavf/iavf_rxtx_vec_avx2.c
View File

@ -695,7 +695,7 @@ _iavf_recv_raw_pkts_vec_avx2_flex_rxd(struct iavf_rx_queue *rxq,
_mm256_set_epi8
(/* first descriptor */
0xFF, 0xFF,
0xFF, 0xFF, /* rss not supported */
0xFF, 0xFF, /* rss hash parsed separately */
11, 10, /* octet 10~11, 16 bits vlan_macip */
5, 4, /* octet 4~5, 16 bits data_len */
0xFF, 0xFF, /* skip hi 16 bits pkt_len, zero out */
@ -704,7 +704,7 @@ _iavf_recv_raw_pkts_vec_avx2_flex_rxd(struct iavf_rx_queue *rxq,
0xFF, 0xFF, /*pkt_type set as unknown */
/* second descriptor */
0xFF, 0xFF,
0xFF, 0xFF, /* rss not supported */
0xFF, 0xFF, /* rss hash parsed separately */
11, 10, /* octet 10~11, 16 bits vlan_macip */
5, 4, /* octet 4~5, 16 bits data_len */
0xFF, 0xFF, /* skip hi 16 bits pkt_len, zero out */
@ -991,6 +991,96 @@ _iavf_recv_raw_pkts_vec_avx2_flex_rxd(struct iavf_rx_queue *rxq,
_mm256_extract_epi32(fdir_id0_7, 4);
} /* if() on fdir_enabled */
#ifndef RTE_LIBRTE_IAVF_16BYTE_RX_DESC
/**
* needs to load 2nd 16B of each desc for RSS hash parsing,
* will cause performance drop to get into this context.
*/
if (rxq->vsi->adapter->eth_dev->data->dev_conf.rxmode.offloads &
DEV_RX_OFFLOAD_RSS_HASH) {
/* load bottom half of every 32B desc */
const __m128i raw_desc_bh7 =
_mm_load_si128
((void *)(&rxdp[7].wb.status_error1));
rte_compiler_barrier();
const __m128i raw_desc_bh6 =
_mm_load_si128
((void *)(&rxdp[6].wb.status_error1));
rte_compiler_barrier();
const __m128i raw_desc_bh5 =
_mm_load_si128
((void *)(&rxdp[5].wb.status_error1));
rte_compiler_barrier();
const __m128i raw_desc_bh4 =
_mm_load_si128
((void *)(&rxdp[4].wb.status_error1));
rte_compiler_barrier();
const __m128i raw_desc_bh3 =
_mm_load_si128
((void *)(&rxdp[3].wb.status_error1));
rte_compiler_barrier();
const __m128i raw_desc_bh2 =
_mm_load_si128
((void *)(&rxdp[2].wb.status_error1));
rte_compiler_barrier();
const __m128i raw_desc_bh1 =
_mm_load_si128
((void *)(&rxdp[1].wb.status_error1));
rte_compiler_barrier();
const __m128i raw_desc_bh0 =
_mm_load_si128
((void *)(&rxdp[0].wb.status_error1));
__m256i raw_desc_bh6_7 =
_mm256_inserti128_si256
(_mm256_castsi128_si256(raw_desc_bh6),
raw_desc_bh7, 1);
__m256i raw_desc_bh4_5 =
_mm256_inserti128_si256
(_mm256_castsi128_si256(raw_desc_bh4),
raw_desc_bh5, 1);
__m256i raw_desc_bh2_3 =
_mm256_inserti128_si256
(_mm256_castsi128_si256(raw_desc_bh2),
raw_desc_bh3, 1);
__m256i raw_desc_bh0_1 =
_mm256_inserti128_si256
(_mm256_castsi128_si256(raw_desc_bh0),
raw_desc_bh1, 1);
/**
* to shift the 32b RSS hash value to the
* highest 32b of each 128b before mask
*/
__m256i rss_hash6_7 =
_mm256_slli_epi64(raw_desc_bh6_7, 32);
__m256i rss_hash4_5 =
_mm256_slli_epi64(raw_desc_bh4_5, 32);
__m256i rss_hash2_3 =
_mm256_slli_epi64(raw_desc_bh2_3, 32);
__m256i rss_hash0_1 =
_mm256_slli_epi64(raw_desc_bh0_1, 32);
__m256i rss_hash_msk =
_mm256_set_epi32(0xFFFFFFFF, 0, 0, 0,
0xFFFFFFFF, 0, 0, 0);
rss_hash6_7 = _mm256_and_si256
(rss_hash6_7, rss_hash_msk);
rss_hash4_5 = _mm256_and_si256
(rss_hash4_5, rss_hash_msk);
rss_hash2_3 = _mm256_and_si256
(rss_hash2_3, rss_hash_msk);
rss_hash0_1 = _mm256_and_si256
(rss_hash0_1, rss_hash_msk);
mb6_7 = _mm256_or_si256(mb6_7, rss_hash6_7);
mb4_5 = _mm256_or_si256(mb4_5, rss_hash4_5);
mb2_3 = _mm256_or_si256(mb2_3, rss_hash2_3);
mb0_1 = _mm256_or_si256(mb0_1, rss_hash0_1);
} /* if() on RSS hash parsing */
#endif
/**
* At this point, we have the 8 sets of flags in the low 16-bits
* of each 32-bit value in vlan0.