From: Jeff Guo Date: Fri, 16 Oct 2020 09:44:28 +0000 (+0800) Subject: net/i40e: fix vector Rx X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=9e27f00f3a61939e02429d5782ca10bc4cd5e315;p=dpdk.git net/i40e: fix vector Rx The limitation of burst size in vector rx was removed, since it should retrieve as much received packets as possible. And also the scattered receive path should use a wrapper function to achieve the goal of burst maximizing. Bugzilla ID: 516 Fixes: 5b463eda8d26 ("net/i40e: make vector driver filenames consistent") Fixes: ae0eb310f253 ("net/i40e: implement vector PMD for ARM") Fixes: c3def6a8724c ("net/i40e: implement vector PMD for altivec") Cc: stable@dpdk.org Signed-off-by: Jeff Guo Acked-by: Morten Brørup Acked-by: Qi Zhang --- diff --git a/drivers/net/i40e/i40e_rxtx_vec_altivec.c b/drivers/net/i40e/i40e_rxtx_vec_altivec.c index 6862a017e1..d3238bfb6a 100644 --- a/drivers/net/i40e/i40e_rxtx_vec_altivec.c +++ b/drivers/net/i40e/i40e_rxtx_vec_altivec.c @@ -188,11 +188,13 @@ desc_to_ptype_v(vector unsigned long descs[4], struct rte_mbuf **rx_pkts, ptype_tbl[(*(vector unsigned char *)&ptype1)[8]]; } - /* Notice: - * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet - * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST - * numbers of DD bits - */ +/** + * vPMD raw receive routine, only accept(nb_pkts >= RTE_I40E_DESCS_PER_LOOP) + * + * Notice: + * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet + * - floor align nb_pkts to a RTE_I40E_DESCS_PER_LOOP power-of-two + */ static inline uint16_t _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts, uint16_t nb_pkts, uint8_t *split_packet) @@ -214,9 +216,6 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts, }; vector unsigned long dd_check, eop_check; - /* nb_pkts shall be less equal than RTE_I40E_MAX_RX_BURST */ - nb_pkts = RTE_MIN(nb_pkts, RTE_I40E_MAX_RX_BURST); - /* nb_pkts has to be floor-aligned to RTE_I40E_DESCS_PER_LOOP */ nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, RTE_I40E_DESCS_PER_LOOP); @@ -459,15 +458,15 @@ i40e_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, return _recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL); } - /* vPMD receive routine that reassembles scattered packets - * Notice: - * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet - * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST - * numbers of DD bits - */ -uint16_t -i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, - uint16_t nb_pkts) +/** + * vPMD receive routine that reassembles single burst of 32 scattered packets + * + * Notice: + * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet + */ +static uint16_t +i40e_recv_scattered_burst_vec(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) { struct i40e_rx_queue *rxq = rx_queue; uint8_t split_flags[RTE_I40E_VPMD_RX_BURST] = {0}; @@ -500,6 +499,32 @@ i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, &split_flags[i]); } +/** + * vPMD receive routine that reassembles scattered packets. + */ +uint16_t +i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + uint16_t retval = 0; + + while (nb_pkts > RTE_I40E_VPMD_RX_BURST) { + uint16_t burst; + + burst = i40e_recv_scattered_burst_vec(rx_queue, + rx_pkts + retval, + RTE_I40E_VPMD_RX_BURST); + retval += burst; + nb_pkts -= burst; + if (burst < RTE_I40E_VPMD_RX_BURST) + return retval; + } + + return retval + i40e_recv_scattered_burst_vec(rx_queue, + rx_pkts + retval, + nb_pkts); +} + static inline void vtx1(volatile struct i40e_tx_desc *txdp, struct rte_mbuf *pkt, uint64_t flags) diff --git a/drivers/net/i40e/i40e_rxtx_vec_neon.c b/drivers/net/i40e/i40e_rxtx_vec_neon.c index 543ecadb07..f094de69ae 100644 --- a/drivers/net/i40e/i40e_rxtx_vec_neon.c +++ b/drivers/net/i40e/i40e_rxtx_vec_neon.c @@ -187,11 +187,12 @@ desc_to_ptype_v(uint64x2_t descs[4], struct rte_mbuf **__rte_restrict rx_pkts, } - /* +/** + * vPMD raw receive routine, only accept(nb_pkts >= RTE_I40E_DESCS_PER_LOOP) + * * Notice: * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet - * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST - * numbers of DD bits + * - floor align nb_pkts to a RTE_I40E_DESCS_PER_LOOP power-of-two */ static inline uint16_t _recv_raw_pkts_vec(struct i40e_rx_queue *__rte_restrict rxq, @@ -230,9 +231,6 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *__rte_restrict rxq, 0, 0, 0 /* ignore non-length fields */ }; - /* nb_pkts shall be less equal than RTE_I40E_MAX_RX_BURST */ - nb_pkts = RTE_MIN(nb_pkts, RTE_I40E_MAX_RX_BURST); - /* nb_pkts has to be floor-aligned to RTE_I40E_DESCS_PER_LOOP */ nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, RTE_I40E_DESCS_PER_LOOP); @@ -439,15 +437,15 @@ i40e_recv_pkts_vec(void *__rte_restrict rx_queue, return _recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL); } - /* vPMD receive routine that reassembles scattered packets +/** + * vPMD receive routine that reassembles single burst of 32 scattered packets + * * Notice: * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet - * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST - * numbers of DD bits */ -uint16_t -i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, - uint16_t nb_pkts) +static uint16_t +i40e_recv_scattered_burst_vec(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) { struct i40e_rx_queue *rxq = rx_queue; @@ -482,6 +480,32 @@ i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, &split_flags[i]); } +/** + * vPMD receive routine that reassembles scattered packets. + */ +uint16_t +i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + uint16_t retval = 0; + + while (nb_pkts > RTE_I40E_VPMD_RX_BURST) { + uint16_t burst; + + burst = i40e_recv_scattered_burst_vec(rx_queue, + rx_pkts + retval, + RTE_I40E_VPMD_RX_BURST); + retval += burst; + nb_pkts -= burst; + if (burst < RTE_I40E_VPMD_RX_BURST) + return retval; + } + + return retval + i40e_recv_scattered_burst_vec(rx_queue, + rx_pkts + retval, + nb_pkts); +} + static inline void vtx1(volatile struct i40e_tx_desc *txdp, struct rte_mbuf *pkt, uint64_t flags) diff --git a/drivers/net/i40e/i40e_rxtx_vec_sse.c b/drivers/net/i40e/i40e_rxtx_vec_sse.c index 240ce478ab..4b2b6a28fc 100644 --- a/drivers/net/i40e/i40e_rxtx_vec_sse.c +++ b/drivers/net/i40e/i40e_rxtx_vec_sse.c @@ -342,11 +342,12 @@ desc_to_ptype_v(__m128i descs[4], struct rte_mbuf **rx_pkts, rx_pkts[3]->packet_type = ptype_tbl[_mm_extract_epi8(ptype1, 8)]; } - /* +/** + * vPMD raw receive routine, only accept(nb_pkts >= RTE_I40E_DESCS_PER_LOOP) + * * Notice: * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet - * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST - * numbers of DD bits + * - floor align nb_pkts to a RTE_I40E_DESCS_PER_LOOP power-of-two */ static inline uint16_t _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts, @@ -378,9 +379,6 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts, offsetof(struct rte_mbuf, rx_descriptor_fields1) + 8); __m128i dd_check, eop_check; - /* nb_pkts shall be less equal than RTE_I40E_MAX_RX_BURST */ - nb_pkts = RTE_MIN(nb_pkts, RTE_I40E_MAX_RX_BURST); - /* nb_pkts has to be floor-aligned to RTE_I40E_DESCS_PER_LOOP */ nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, RTE_I40E_DESCS_PER_LOOP); @@ -605,15 +603,15 @@ i40e_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, return _recv_raw_pkts_vec(rx_queue, rx_pkts, nb_pkts, NULL); } - /* vPMD receive routine that reassembles scattered packets +/** + * vPMD receive routine that reassembles single burst of 32 scattered packets + * * Notice: * - nb_pkts < RTE_I40E_DESCS_PER_LOOP, just return no packet - * - nb_pkts > RTE_I40E_VPMD_RX_BURST, only scan RTE_I40E_VPMD_RX_BURST - * numbers of DD bits */ -uint16_t -i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, - uint16_t nb_pkts) +static uint16_t +i40e_recv_scattered_burst_vec(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) { struct i40e_rx_queue *rxq = rx_queue; @@ -648,6 +646,32 @@ i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, &split_flags[i]); } +/** + * vPMD receive routine that reassembles scattered packets. + */ +uint16_t +i40e_recv_scattered_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts, + uint16_t nb_pkts) +{ + uint16_t retval = 0; + + while (nb_pkts > RTE_I40E_VPMD_RX_BURST) { + uint16_t burst; + + burst = i40e_recv_scattered_burst_vec(rx_queue, + rx_pkts + retval, + RTE_I40E_VPMD_RX_BURST); + retval += burst; + nb_pkts -= burst; + if (burst < RTE_I40E_VPMD_RX_BURST) + return retval; + } + + return retval + i40e_recv_scattered_burst_vec(rx_queue, + rx_pkts + retval, + nb_pkts); +} + static inline void vtx1(volatile struct i40e_tx_desc *txdp, struct rte_mbuf *pkt, uint64_t flags)