[dpdk-dev] [PATCH] ppc64le: fix build with Clang and without glibc

[dpdk-dev] [PATCH] ppc64le: fix build with Clang and without glibc

[Piotr Kubaj]

There are couple of issues when building with Clang:
1. vector is a keyword and should not be used in code. I undefined it,
but it would probably be better to just change the variable name.
2. vector long is deprecated by Clang and should not be used. I switched
here to vector int.
3. Additionally, sys/platform/ppc.h is glibc-dependant and is not
available in other libc's. Use the portable method of reading TBR when
glibc is not used.  Taken from
https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/powerpc/sys/platform/ppc.h

Signed-off-by: Piotr Kubaj <pkubaj@FreeBSD.org>
---
 app/test-bbdev/test_bbdev_vector.h            |  3 +
 .../cperf_test_vector_parsing.h               |  3 +
 app/test-crypto-perf/cperf_test_verify.c      |  3 +
 drivers/net/bnxt/bnxt_irq.h                   |  3 +
 drivers/net/i40e/i40e_rxtx_vec_altivec.c      | 70 +++++++++----------
 drivers/net/ixgbe/ixgbe_ethdev.c              |  3 +
 drivers/net/ixgbe/ixgbe_rxtx.c                |  3 +
 drivers/net/txgbe/txgbe_ethdev.c              |  3 +
 lib/librte_eal/ppc/include/rte_altivec.h      |  3 +
 lib/librte_eal/ppc/include/rte_cycles.h       |  8 +++
 10 files changed, 67 insertions(+), 35 deletions(-)

diff --git a/app/test-bbdev/test_bbdev_vector.h b/app/test-bbdev/test_bbdev_vector.h
index 4e5dbf5d5..665443fa8 100644
--- a/app/test-bbdev/test_bbdev_vector.h
+++ b/app/test-bbdev/test_bbdev_vector.h
@@ -71,6 +71,9 @@ struct test_bbdev_vector {
 };
 
 /* fills test vector parameters based on test file */
+#if defined(__clang__) && defined(__powerpc64__)
+#undef vector
+#endif
 int
 test_bbdev_vector_read(const char *filename,
 		struct test_bbdev_vector *vector);
diff --git a/app/test-crypto-perf/cperf_test_vector_parsing.h b/app/test-crypto-perf/cperf_test_vector_parsing.h
index 247b14221..76a86cea5 100644
--- a/app/test-crypto-perf/cperf_test_vector_parsing.h
+++ b/app/test-crypto-perf/cperf_test_vector_parsing.h
@@ -18,6 +18,9 @@
  * @return
  *   0 on success, (-1) on error.
  */
+#if defined(__clang__) && defined(__powerpc64__)
+#undef vector
+#endif
 int
 free_test_vector(struct cperf_test_vector *vector, struct cperf_options *opts);
 
diff --git a/app/test-crypto-perf/cperf_test_verify.c b/app/test-crypto-perf/cperf_test_verify.c
index 2939aeaa9..14010a5a2 100644
--- a/app/test-crypto-perf/cperf_test_verify.c
+++ b/app/test-crypto-perf/cperf_test_verify.c
@@ -91,6 +91,9 @@ cperf_verify_test_constructor(struct rte_mempool *sess_mp,
 	return NULL;
 }
 
+#if defined(__clang__) && defined(__powerpc64__)
+#undef vector
+#endif
 static int
 cperf_verify_op(struct rte_crypto_op *op,
 		const struct cperf_options *options,
diff --git a/drivers/net/bnxt/bnxt_irq.h b/drivers/net/bnxt/bnxt_irq.h
index 7b02f3097..59a9c4224 100644
--- a/drivers/net/bnxt/bnxt_irq.h
+++ b/drivers/net/bnxt/bnxt_irq.h
@@ -8,6 +8,9 @@
 
 struct bnxt_irq {
 	rte_intr_callback_fn	handler;
+#if defined(__clang__) && defined(__powerpc64__)
+#undef vector
+#endif
 	unsigned int		vector;
 	uint8_t			requested;
 	char			name[RTE_ETH_NAME_MAX_LEN + 2];
diff --git a/drivers/net/i40e/i40e_rxtx_vec_altivec.c b/drivers/net/i40e/i40e_rxtx_vec_altivec.c
index 1ad74646d..d4230a68b 100644
--- a/drivers/net/i40e/i40e_rxtx_vec_altivec.c
+++ b/drivers/net/i40e/i40e_rxtx_vec_altivec.c
@@ -27,10 +27,10 @@ i40e_rxq_rearm(struct i40e_rx_queue *rxq)
 	struct i40e_rx_entry *rxep = &rxq->sw_ring[rxq->rxrearm_start];
 	struct rte_mbuf *mb0, *mb1;
 
-	vector unsigned long hdr_room = (vector unsigned long){
+	vector unsigned int hdr_room = (vector unsigned int){
 						RTE_PKTMBUF_HEADROOM,
 						RTE_PKTMBUF_HEADROOM};
-	vector unsigned long dma_addr0, dma_addr1;
+	vector unsigned int dma_addr0, dma_addr1;
 
 	rxdp = rxq->rx_ring + rxq->rxrearm_start;
 
@@ -40,11 +40,11 @@ i40e_rxq_rearm(struct i40e_rx_queue *rxq)
 				 RTE_I40E_RXQ_REARM_THRESH) < 0) {
 		if (rxq->rxrearm_nb + RTE_I40E_RXQ_REARM_THRESH >=
 		    rxq->nb_rx_desc) {
-			dma_addr0 = (vector unsigned long){};
+			dma_addr0 = (vector unsigned int){};
 			for (i = 0; i < RTE_I40E_DESCS_PER_LOOP; i++) {
 				rxep[i].mbuf = &rxq->fake_mbuf;
 				vec_st(dma_addr0, 0,
-				       (vector unsigned long *)&rxdp[i].read);
+				       (vector unsigned int *)&rxdp[i].read);
 			}
 		}
 		rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
@@ -54,7 +54,7 @@ i40e_rxq_rearm(struct i40e_rx_queue *rxq)
 
 	/* Initialize the mbufs in vector, process 2 mbufs in one loop */
 	for (i = 0; i < RTE_I40E_RXQ_REARM_THRESH; i += 2, rxep += 2) {
-		vector unsigned long vaddr0, vaddr1;
+		vector unsigned int vaddr0, vaddr1;
 		uintptr_t p0, p1;
 
 		mb0 = rxep[0].mbuf;
@@ -72,8 +72,8 @@ i40e_rxq_rearm(struct i40e_rx_queue *rxq)
 		*(uint64_t *)p1 = rxq->mbuf_initializer;
 
 		/* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */
-		vaddr0 = vec_ld(0, (vector unsigned long *)&mb0->buf_addr);
-		vaddr1 = vec_ld(0, (vector unsigned long *)&mb1->buf_addr);
+		vaddr0 = vec_ld(0, (vector unsigned int *)&mb0->buf_addr);
+		vaddr1 = vec_ld(0, (vector unsigned int *)&mb1->buf_addr);
 
 		/* convert pa to dma_addr hdr/data */
 		dma_addr0 = vec_mergel(vaddr0, vaddr0);
@@ -84,8 +84,8 @@ i40e_rxq_rearm(struct i40e_rx_queue *rxq)
 		dma_addr1 = vec_add(dma_addr1, hdr_room);
 
 		/* flush desc with pa dma_addr */
-		vec_st(dma_addr0, 0, (vector unsigned long *)&rxdp++->read);
-		vec_st(dma_addr1, 0, (vector unsigned long *)&rxdp++->read);
+		vec_st(dma_addr0, 0, (vector unsigned int *)&rxdp++->read);
+		vec_st(dma_addr1, 0, (vector unsigned int *)&rxdp++->read);
 	}
 
 	rxq->rxrearm_start += RTE_I40E_RXQ_REARM_THRESH;
@@ -102,7 +102,7 @@ i40e_rxq_rearm(struct i40e_rx_queue *rxq)
 }
 
 static inline void
-desc_to_olflags_v(vector unsigned long descs[4], struct rte_mbuf **rx_pkts)
+desc_to_olflags_v(vector unsigned int descs[4], struct rte_mbuf **rx_pkts)
 {
 	vector unsigned int vlan0, vlan1, rss, l3_l4e;
 
@@ -169,14 +169,14 @@ desc_to_olflags_v(vector unsigned long descs[4], struct rte_mbuf **rx_pkts)
 #define PKTLEN_SHIFT     10
 
 static inline void
-desc_to_ptype_v(vector unsigned long descs[4], struct rte_mbuf **rx_pkts,
+desc_to_ptype_v(vector unsigned int descs[4], struct rte_mbuf **rx_pkts,
 		uint32_t *ptype_tbl)
 {
-	vector unsigned long ptype0 = vec_mergel(descs[0], descs[1]);
-	vector unsigned long ptype1 = vec_mergel(descs[2], descs[3]);
+	vector unsigned int ptype0 = vec_mergel(descs[0], descs[1]);
+	vector unsigned int ptype1 = vec_mergel(descs[2], descs[3]);
 
-	ptype0 = vec_sr(ptype0, (vector unsigned long){30, 30});
-	ptype1 = vec_sr(ptype1, (vector unsigned long){30, 30});
+	ptype0 = vec_sr(ptype0, (vector unsigned int){30, 30});
+	ptype1 = vec_sr(ptype1, (vector unsigned int){30, 30});
 
 	rx_pkts[0]->packet_type =
 		ptype_tbl[(*(vector unsigned char *)&ptype0)[0]];
@@ -214,7 +214,7 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
 		rxq->crc_len, /* sub crc on data_len */
 		0, 0, 0       /* ignore non-length fields */
 		};
-	vector unsigned long dd_check, eop_check;
+	vector unsigned int dd_check, eop_check;
 
 	/* 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);
@@ -240,11 +240,11 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
 		return 0;
 
 	/* 4 packets DD mask */
-	dd_check = (vector unsigned long){0x0000000100000001ULL,
+	dd_check = (vector unsigned int){0x0000000100000001ULL,
 					  0x0000000100000001ULL};
 
 	/* 4 packets EOP mask */
-	eop_check = (vector unsigned long){0x0000000200000002ULL,
+	eop_check = (vector unsigned int){0x0000000200000002ULL,
 					   0x0000000200000002ULL};
 
 	/* mask to shuffle from desc. to mbuf */
@@ -274,35 +274,35 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
 	for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
 			pos += RTE_I40E_DESCS_PER_LOOP,
 			rxdp += RTE_I40E_DESCS_PER_LOOP) {
-		vector unsigned long descs[RTE_I40E_DESCS_PER_LOOP];
+		vector unsigned int descs[RTE_I40E_DESCS_PER_LOOP];
 		vector unsigned char pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4;
 		vector unsigned short staterr, sterr_tmp1, sterr_tmp2;
-		vector unsigned long mbp1, mbp2; /* two mbuf pointer
+		vector unsigned int mbp1, mbp2; /* two mbuf pointer
 						  * in one XMM reg.
 						  */
 
 		/* B.1 load 1 mbuf point */
-		mbp1 = *(vector unsigned long *)&sw_ring[pos];
+		mbp1 = *(vector unsigned int *)&sw_ring[pos];
 		/* Read desc statuses backwards to avoid race condition */
 		/* A.1 load 4 pkts desc */
-		descs[3] = *(vector unsigned long *)(rxdp + 3);
+		descs[3] = *(vector unsigned int *)(rxdp + 3);
 		rte_compiler_barrier();
 
 		/* B.2 copy 2 mbuf point into rx_pkts  */
-		*(vector unsigned long *)&rx_pkts[pos] = mbp1;
+		*(vector unsigned int *)&rx_pkts[pos] = mbp1;
 
 		/* B.1 load 1 mbuf point */
-		mbp2 = *(vector unsigned long *)&sw_ring[pos + 2];
+		mbp2 = *(vector unsigned int *)&sw_ring[pos + 2];
 
-		descs[2] = *(vector unsigned long *)(rxdp + 2);
+		descs[2] = *(vector unsigned int *)(rxdp + 2);
 		rte_compiler_barrier();
 		/* B.1 load 2 mbuf point */
-		descs[1] = *(vector unsigned long *)(rxdp + 1);
+		descs[1] = *(vector unsigned int *)(rxdp + 1);
 		rte_compiler_barrier();
-		descs[0] = *(vector unsigned long *)(rxdp);
+		descs[0] = *(vector unsigned int *)(rxdp);
 
 		/* B.2 copy 2 mbuf point into rx_pkts  */
-		*(vector unsigned long *)&rx_pkts[pos + 2] =  mbp2;
+		*(vector unsigned int *)&rx_pkts[pos + 2] =  mbp2;
 
 		if (split_packet) {
 			rte_mbuf_prefetch_part2(rx_pkts[pos]);
@@ -324,8 +324,8 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
 			(vector unsigned int){0, 0, 0, PKTLEN_SHIFT});
 
 		/* merge the now-aligned packet length fields back in */
-		descs[3] = (vector unsigned long)len3;
-		descs[2] = (vector unsigned long)len2;
+		descs[3] = (vector unsigned int)len3;
+		descs[2] = (vector unsigned int)len2;
 
 		/* D.1 pkt 3,4 convert format from desc to pktmbuf */
 		pkt_mb4 = vec_perm((vector unsigned char)descs[3],
@@ -354,8 +354,8 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
 			(vector unsigned int){0, 0, 0, PKTLEN_SHIFT});
 
 		/* merge the now-aligned packet length fields back in */
-		descs[1] = (vector unsigned long)len1;
-		descs[0] = (vector unsigned long)len0;
+		descs[1] = (vector unsigned int)len1;
+		descs[0] = (vector unsigned int)len0;
 
 		/* D.1 pkt 1,2 convert format from desc to pktmbuf */
 		pkt_mb2 = vec_perm((vector unsigned char)descs[1],
@@ -432,7 +432,7 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
 
 		/* C.4 calc avaialbe number of desc */
 		var = __builtin_popcountll((vec_ld(0,
-			(vector unsigned long *)&staterr)[0]));
+			(vector unsigned int *)&staterr)[0]));
 		nb_pkts_recd += var;
 		if (likely(var != RTE_I40E_DESCS_PER_LOOP))
 			break;
@@ -533,9 +533,9 @@ vtx1(volatile struct i40e_tx_desc *txdp,
 		((uint64_t)flags  << I40E_TXD_QW1_CMD_SHIFT) |
 		((uint64_t)pkt->data_len << I40E_TXD_QW1_TX_BUF_SZ_SHIFT));
 
-	vector unsigned long descriptor = (vector unsigned long){
+	vector unsigned int descriptor = (vector unsigned int){
 		pkt->buf_iova + pkt->data_off, high_qw};
-	*(vector unsigned long *)txdp = descriptor;
+	*(vector unsigned int *)txdp = descriptor;
 }
 
 static inline void
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 761a0f26b..59ffe92ea 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -5597,6 +5597,9 @@ ixgbe_vt_check(struct ixgbe_hw *hw)
 static uint32_t
 ixgbe_uta_vector(struct ixgbe_hw *hw, struct rte_ether_addr *uc_addr)
 {
+#if defined(__clang__) && defined(__powerpc64__)
+#undef vector
+#endif
 	uint32_t vector = 0;
 
 	switch (hw->mac.mc_filter_type) {
diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index 7d23bab29..88d71131e 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -4740,6 +4740,9 @@ ixgbe_get_rscctl_maxdesc(struct rte_mempool *pool)
  * @vector the MSIX vector for this queue
  * @type RX/TX/MISC
  */
+#if defined(__clang__) && defined(__powerpc64__)
+#undef vector
+#endif
 static void
 ixgbe_set_ivar(struct rte_eth_dev *dev, u8 entry, u8 vector, s8 type)
 {
diff --git a/drivers/net/txgbe/txgbe_ethdev.c b/drivers/net/txgbe/txgbe_ethdev.c
index 90137d0ce..2747246a1 100644
--- a/drivers/net/txgbe/txgbe_ethdev.c
+++ b/drivers/net/txgbe/txgbe_ethdev.c
@@ -3382,6 +3382,9 @@ txgbe_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
 static uint32_t
 txgbe_uta_vector(struct txgbe_hw *hw, struct rte_ether_addr *uc_addr)
 {
+#if defined(__clang__) && defined(__powerpc64__)
+#undef vector
+#endif
 	uint32_t vector = 0;
 
 	switch (hw->mac.mc_filter_type) {
diff --git a/lib/librte_eal/ppc/include/rte_altivec.h b/lib/librte_eal/ppc/include/rte_altivec.h
index 1551a9454..3fcc819c1 100644
--- a/lib/librte_eal/ppc/include/rte_altivec.h
+++ b/lib/librte_eal/ppc/include/rte_altivec.h
@@ -7,6 +7,9 @@
 #define _RTE_ALTIVEC_H_
 
 /* To include altivec.h, GCC version must be >= 4.8 */
+#ifdef __clang__
+#define vector __vector
+#endif
 #include <altivec.h>
 
 /*
diff --git a/lib/librte_eal/ppc/include/rte_cycles.h b/lib/librte_eal/ppc/include/rte_cycles.h
index 5585f9273..9925d1d0d 100644
--- a/lib/librte_eal/ppc/include/rte_cycles.h
+++ b/lib/librte_eal/ppc/include/rte_cycles.h
@@ -10,7 +10,9 @@
 extern "C" {
 #endif
 
+#ifdef __GLIBC__
 #include <sys/platform/ppc.h>
+#endif
 
 #include "generic/rte_cycles.h"
 
@@ -26,7 +28,13 @@ extern "C" {
 static inline uint64_t
 rte_rdtsc(void)
 {
+#ifdef __GLIBC__
 	return __ppc_get_timebase();
+#else
+	uint64_t __tb;
+	__asm__ volatile ("mfspr %0, 268" : "=r" (__tb));
+	return __tb;
+#endif
 }
 
 static inline uint64_t
-- 
2.30.1

Re: [dpdk-dev] [PATCH] ppc64le: fix build with Clang and without glibc

[Ajit Khaparde]

[-- Attachment #1: Type: text/plain, Size: 16638 bytes --]

On Thu, Mar 11, 2021 at 8:11 AM Piotr Kubaj <pkubaj@freebsd.org> wrote:
>
> There are couple of issues when building with Clang:
> 1. vector is a keyword and should not be used in code. I undefined it,
> but it would probably be better to just change the variable name.
> 2. vector long is deprecated by Clang and should not be used. I switched
> here to vector int.
> 3. Additionally, sys/platform/ppc.h is glibc-dependant and is not
> available in other libc's. Use the portable method of reading TBR when
> glibc is not used.  Taken from
> https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/powerpc/sys/platform/ppc.h
>
> Signed-off-by: Piotr Kubaj <pkubaj@FreeBSD.org>
> ---
>  app/test-bbdev/test_bbdev_vector.h            |  3 +
>  .../cperf_test_vector_parsing.h               |  3 +
>  app/test-crypto-perf/cperf_test_verify.c      |  3 +
>  drivers/net/bnxt/bnxt_irq.h                   |  3 +
>  drivers/net/i40e/i40e_rxtx_vec_altivec.c      | 70 +++++++++----------
>  drivers/net/ixgbe/ixgbe_ethdev.c              |  3 +
>  drivers/net/ixgbe/ixgbe_rxtx.c                |  3 +
>  drivers/net/txgbe/txgbe_ethdev.c              |  3 +
>  lib/librte_eal/ppc/include/rte_altivec.h      |  3 +
>  lib/librte_eal/ppc/include/rte_cycles.h       |  8 +++
>  10 files changed, 67 insertions(+), 35 deletions(-)
>
> diff --git a/app/test-bbdev/test_bbdev_vector.h b/app/test-bbdev/test_bbdev_vector.h
> index 4e5dbf5d5..665443fa8 100644
> --- a/app/test-bbdev/test_bbdev_vector.h
> +++ b/app/test-bbdev/test_bbdev_vector.h
> @@ -71,6 +71,9 @@ struct test_bbdev_vector {
>  };
>
>  /* fills test vector parameters based on test file */
> +#if defined(__clang__) && defined(__powerpc64__)
> +#undef vector
> +#endif
>  int
>  test_bbdev_vector_read(const char *filename,
>                 struct test_bbdev_vector *vector);
> diff --git a/app/test-crypto-perf/cperf_test_vector_parsing.h b/app/test-crypto-perf/cperf_test_vector_parsing.h
> index 247b14221..76a86cea5 100644
> --- a/app/test-crypto-perf/cperf_test_vector_parsing.h
> +++ b/app/test-crypto-perf/cperf_test_vector_parsing.h
> @@ -18,6 +18,9 @@
>   * @return
>   *   0 on success, (-1) on error.
>   */
> +#if defined(__clang__) && defined(__powerpc64__)
> +#undef vector
> +#endif
>  int
>  free_test_vector(struct cperf_test_vector *vector, struct cperf_options *opts);
>
> diff --git a/app/test-crypto-perf/cperf_test_verify.c b/app/test-crypto-perf/cperf_test_verify.c
> index 2939aeaa9..14010a5a2 100644
> --- a/app/test-crypto-perf/cperf_test_verify.c
> +++ b/app/test-crypto-perf/cperf_test_verify.c
> @@ -91,6 +91,9 @@ cperf_verify_test_constructor(struct rte_mempool *sess_mp,
>         return NULL;
>  }
>
> +#if defined(__clang__) && defined(__powerpc64__)
> +#undef vector
> +#endif
>  static int
>  cperf_verify_op(struct rte_crypto_op *op,
>                 const struct cperf_options *options,
> diff --git a/drivers/net/bnxt/bnxt_irq.h b/drivers/net/bnxt/bnxt_irq.h
> index 7b02f3097..59a9c4224 100644
> --- a/drivers/net/bnxt/bnxt_irq.h
> +++ b/drivers/net/bnxt/bnxt_irq.h
> @@ -8,6 +8,9 @@
>
>  struct bnxt_irq {
>         rte_intr_callback_fn    handler;
> +#if defined(__clang__) && defined(__powerpc64__)
> +#undef vector
> +#endif
For bnxt PMD, I can submit a patch to rename vector.
Thanks for bringing this up.

>         unsigned int            vector;
>         uint8_t                 requested;
>         char                    name[RTE_ETH_NAME_MAX_LEN + 2];
> diff --git a/drivers/net/i40e/i40e_rxtx_vec_altivec.c b/drivers/net/i40e/i40e_rxtx_vec_altivec.c
> index 1ad74646d..d4230a68b 100644
> --- a/drivers/net/i40e/i40e_rxtx_vec_altivec.c
> +++ b/drivers/net/i40e/i40e_rxtx_vec_altivec.c
> @@ -27,10 +27,10 @@ i40e_rxq_rearm(struct i40e_rx_queue *rxq)
>         struct i40e_rx_entry *rxep = &rxq->sw_ring[rxq->rxrearm_start];
>         struct rte_mbuf *mb0, *mb1;
>
> -       vector unsigned long hdr_room = (vector unsigned long){
> +       vector unsigned int hdr_room = (vector unsigned int){
>                                                 RTE_PKTMBUF_HEADROOM,
>                                                 RTE_PKTMBUF_HEADROOM};
> -       vector unsigned long dma_addr0, dma_addr1;
> +       vector unsigned int dma_addr0, dma_addr1;
>
>         rxdp = rxq->rx_ring + rxq->rxrearm_start;
>
> @@ -40,11 +40,11 @@ i40e_rxq_rearm(struct i40e_rx_queue *rxq)
>                                  RTE_I40E_RXQ_REARM_THRESH) < 0) {
>                 if (rxq->rxrearm_nb + RTE_I40E_RXQ_REARM_THRESH >=
>                     rxq->nb_rx_desc) {
> -                       dma_addr0 = (vector unsigned long){};
> +                       dma_addr0 = (vector unsigned int){};
>                         for (i = 0; i < RTE_I40E_DESCS_PER_LOOP; i++) {
>                                 rxep[i].mbuf = &rxq->fake_mbuf;
>                                 vec_st(dma_addr0, 0,
> -                                      (vector unsigned long *)&rxdp[i].read);
> +                                      (vector unsigned int *)&rxdp[i].read);
>                         }
>                 }
>                 rte_eth_devices[rxq->port_id].data->rx_mbuf_alloc_failed +=
> @@ -54,7 +54,7 @@ i40e_rxq_rearm(struct i40e_rx_queue *rxq)
>
>         /* Initialize the mbufs in vector, process 2 mbufs in one loop */
>         for (i = 0; i < RTE_I40E_RXQ_REARM_THRESH; i += 2, rxep += 2) {
> -               vector unsigned long vaddr0, vaddr1;
> +               vector unsigned int vaddr0, vaddr1;
>                 uintptr_t p0, p1;
>
>                 mb0 = rxep[0].mbuf;
> @@ -72,8 +72,8 @@ i40e_rxq_rearm(struct i40e_rx_queue *rxq)
>                 *(uint64_t *)p1 = rxq->mbuf_initializer;
>
>                 /* load buf_addr(lo 64bit) and buf_iova(hi 64bit) */
> -               vaddr0 = vec_ld(0, (vector unsigned long *)&mb0->buf_addr);
> -               vaddr1 = vec_ld(0, (vector unsigned long *)&mb1->buf_addr);
> +               vaddr0 = vec_ld(0, (vector unsigned int *)&mb0->buf_addr);
> +               vaddr1 = vec_ld(0, (vector unsigned int *)&mb1->buf_addr);
>
>                 /* convert pa to dma_addr hdr/data */
>                 dma_addr0 = vec_mergel(vaddr0, vaddr0);
> @@ -84,8 +84,8 @@ i40e_rxq_rearm(struct i40e_rx_queue *rxq)
>                 dma_addr1 = vec_add(dma_addr1, hdr_room);
>
>                 /* flush desc with pa dma_addr */
> -               vec_st(dma_addr0, 0, (vector unsigned long *)&rxdp++->read);
> -               vec_st(dma_addr1, 0, (vector unsigned long *)&rxdp++->read);
> +               vec_st(dma_addr0, 0, (vector unsigned int *)&rxdp++->read);
> +               vec_st(dma_addr1, 0, (vector unsigned int *)&rxdp++->read);
>         }
>
>         rxq->rxrearm_start += RTE_I40E_RXQ_REARM_THRESH;
> @@ -102,7 +102,7 @@ i40e_rxq_rearm(struct i40e_rx_queue *rxq)
>  }
>
>  static inline void
> -desc_to_olflags_v(vector unsigned long descs[4], struct rte_mbuf **rx_pkts)
> +desc_to_olflags_v(vector unsigned int descs[4], struct rte_mbuf **rx_pkts)
>  {
>         vector unsigned int vlan0, vlan1, rss, l3_l4e;
>
> @@ -169,14 +169,14 @@ desc_to_olflags_v(vector unsigned long descs[4], struct rte_mbuf **rx_pkts)
>  #define PKTLEN_SHIFT     10
>
>  static inline void
> -desc_to_ptype_v(vector unsigned long descs[4], struct rte_mbuf **rx_pkts,
> +desc_to_ptype_v(vector unsigned int descs[4], struct rte_mbuf **rx_pkts,
>                 uint32_t *ptype_tbl)
>  {
> -       vector unsigned long ptype0 = vec_mergel(descs[0], descs[1]);
> -       vector unsigned long ptype1 = vec_mergel(descs[2], descs[3]);
> +       vector unsigned int ptype0 = vec_mergel(descs[0], descs[1]);
> +       vector unsigned int ptype1 = vec_mergel(descs[2], descs[3]);
>
> -       ptype0 = vec_sr(ptype0, (vector unsigned long){30, 30});
> -       ptype1 = vec_sr(ptype1, (vector unsigned long){30, 30});
> +       ptype0 = vec_sr(ptype0, (vector unsigned int){30, 30});
> +       ptype1 = vec_sr(ptype1, (vector unsigned int){30, 30});
>
>         rx_pkts[0]->packet_type =
>                 ptype_tbl[(*(vector unsigned char *)&ptype0)[0]];
> @@ -214,7 +214,7 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
>                 rxq->crc_len, /* sub crc on data_len */
>                 0, 0, 0       /* ignore non-length fields */
>                 };
> -       vector unsigned long dd_check, eop_check;
> +       vector unsigned int dd_check, eop_check;
>
>         /* 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);
> @@ -240,11 +240,11 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
>                 return 0;
>
>         /* 4 packets DD mask */
> -       dd_check = (vector unsigned long){0x0000000100000001ULL,
> +       dd_check = (vector unsigned int){0x0000000100000001ULL,
>                                           0x0000000100000001ULL};
>
>         /* 4 packets EOP mask */
> -       eop_check = (vector unsigned long){0x0000000200000002ULL,
> +       eop_check = (vector unsigned int){0x0000000200000002ULL,
>                                            0x0000000200000002ULL};
>
>         /* mask to shuffle from desc. to mbuf */
> @@ -274,35 +274,35 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
>         for (pos = 0, nb_pkts_recd = 0; pos < nb_pkts;
>                         pos += RTE_I40E_DESCS_PER_LOOP,
>                         rxdp += RTE_I40E_DESCS_PER_LOOP) {
> -               vector unsigned long descs[RTE_I40E_DESCS_PER_LOOP];
> +               vector unsigned int descs[RTE_I40E_DESCS_PER_LOOP];
>                 vector unsigned char pkt_mb1, pkt_mb2, pkt_mb3, pkt_mb4;
>                 vector unsigned short staterr, sterr_tmp1, sterr_tmp2;
> -               vector unsigned long mbp1, mbp2; /* two mbuf pointer
> +               vector unsigned int mbp1, mbp2; /* two mbuf pointer
>                                                   * in one XMM reg.
>                                                   */
>
>                 /* B.1 load 1 mbuf point */
> -               mbp1 = *(vector unsigned long *)&sw_ring[pos];
> +               mbp1 = *(vector unsigned int *)&sw_ring[pos];
>                 /* Read desc statuses backwards to avoid race condition */
>                 /* A.1 load 4 pkts desc */
> -               descs[3] = *(vector unsigned long *)(rxdp + 3);
> +               descs[3] = *(vector unsigned int *)(rxdp + 3);
>                 rte_compiler_barrier();
>
>                 /* B.2 copy 2 mbuf point into rx_pkts  */
> -               *(vector unsigned long *)&rx_pkts[pos] = mbp1;
> +               *(vector unsigned int *)&rx_pkts[pos] = mbp1;
>
>                 /* B.1 load 1 mbuf point */
> -               mbp2 = *(vector unsigned long *)&sw_ring[pos + 2];
> +               mbp2 = *(vector unsigned int *)&sw_ring[pos + 2];
>
> -               descs[2] = *(vector unsigned long *)(rxdp + 2);
> +               descs[2] = *(vector unsigned int *)(rxdp + 2);
>                 rte_compiler_barrier();
>                 /* B.1 load 2 mbuf point */
> -               descs[1] = *(vector unsigned long *)(rxdp + 1);
> +               descs[1] = *(vector unsigned int *)(rxdp + 1);
>                 rte_compiler_barrier();
> -               descs[0] = *(vector unsigned long *)(rxdp);
> +               descs[0] = *(vector unsigned int *)(rxdp);
>
>                 /* B.2 copy 2 mbuf point into rx_pkts  */
> -               *(vector unsigned long *)&rx_pkts[pos + 2] =  mbp2;
> +               *(vector unsigned int *)&rx_pkts[pos + 2] =  mbp2;
>
>                 if (split_packet) {
>                         rte_mbuf_prefetch_part2(rx_pkts[pos]);
> @@ -324,8 +324,8 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
>                         (vector unsigned int){0, 0, 0, PKTLEN_SHIFT});
>
>                 /* merge the now-aligned packet length fields back in */
> -               descs[3] = (vector unsigned long)len3;
> -               descs[2] = (vector unsigned long)len2;
> +               descs[3] = (vector unsigned int)len3;
> +               descs[2] = (vector unsigned int)len2;
>
>                 /* D.1 pkt 3,4 convert format from desc to pktmbuf */
>                 pkt_mb4 = vec_perm((vector unsigned char)descs[3],
> @@ -354,8 +354,8 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
>                         (vector unsigned int){0, 0, 0, PKTLEN_SHIFT});
>
>                 /* merge the now-aligned packet length fields back in */
> -               descs[1] = (vector unsigned long)len1;
> -               descs[0] = (vector unsigned long)len0;
> +               descs[1] = (vector unsigned int)len1;
> +               descs[0] = (vector unsigned int)len0;
>
>                 /* D.1 pkt 1,2 convert format from desc to pktmbuf */
>                 pkt_mb2 = vec_perm((vector unsigned char)descs[1],
> @@ -432,7 +432,7 @@ _recv_raw_pkts_vec(struct i40e_rx_queue *rxq, struct rte_mbuf **rx_pkts,
>
>                 /* C.4 calc avaialbe number of desc */
>                 var = __builtin_popcountll((vec_ld(0,
> -                       (vector unsigned long *)&staterr)[0]));
> +                       (vector unsigned int *)&staterr)[0]));
>                 nb_pkts_recd += var;
>                 if (likely(var != RTE_I40E_DESCS_PER_LOOP))
>                         break;
> @@ -533,9 +533,9 @@ vtx1(volatile struct i40e_tx_desc *txdp,
>                 ((uint64_t)flags  << I40E_TXD_QW1_CMD_SHIFT) |
>                 ((uint64_t)pkt->data_len << I40E_TXD_QW1_TX_BUF_SZ_SHIFT));
>
> -       vector unsigned long descriptor = (vector unsigned long){
> +       vector unsigned int descriptor = (vector unsigned int){
>                 pkt->buf_iova + pkt->data_off, high_qw};
> -       *(vector unsigned long *)txdp = descriptor;
> +       *(vector unsigned int *)txdp = descriptor;
>  }
>
>  static inline void
> diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
> index 761a0f26b..59ffe92ea 100644
> --- a/drivers/net/ixgbe/ixgbe_ethdev.c
> +++ b/drivers/net/ixgbe/ixgbe_ethdev.c
> @@ -5597,6 +5597,9 @@ ixgbe_vt_check(struct ixgbe_hw *hw)
>  static uint32_t
>  ixgbe_uta_vector(struct ixgbe_hw *hw, struct rte_ether_addr *uc_addr)
>  {
> +#if defined(__clang__) && defined(__powerpc64__)
> +#undef vector
> +#endif
>         uint32_t vector = 0;
>
>         switch (hw->mac.mc_filter_type) {
> diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
> index 7d23bab29..88d71131e 100644
> --- a/drivers/net/ixgbe/ixgbe_rxtx.c
> +++ b/drivers/net/ixgbe/ixgbe_rxtx.c
> @@ -4740,6 +4740,9 @@ ixgbe_get_rscctl_maxdesc(struct rte_mempool *pool)
>   * @vector the MSIX vector for this queue
>   * @type RX/TX/MISC
>   */
> +#if defined(__clang__) && defined(__powerpc64__)
> +#undef vector
> +#endif
>  static void
>  ixgbe_set_ivar(struct rte_eth_dev *dev, u8 entry, u8 vector, s8 type)
>  {
> diff --git a/drivers/net/txgbe/txgbe_ethdev.c b/drivers/net/txgbe/txgbe_ethdev.c
> index 90137d0ce..2747246a1 100644
> --- a/drivers/net/txgbe/txgbe_ethdev.c
> +++ b/drivers/net/txgbe/txgbe_ethdev.c
> @@ -3382,6 +3382,9 @@ txgbe_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
>  static uint32_t
>  txgbe_uta_vector(struct txgbe_hw *hw, struct rte_ether_addr *uc_addr)
>  {
> +#if defined(__clang__) && defined(__powerpc64__)
> +#undef vector
> +#endif
>         uint32_t vector = 0;
>
>         switch (hw->mac.mc_filter_type) {
> diff --git a/lib/librte_eal/ppc/include/rte_altivec.h b/lib/librte_eal/ppc/include/rte_altivec.h
> index 1551a9454..3fcc819c1 100644
> --- a/lib/librte_eal/ppc/include/rte_altivec.h
> +++ b/lib/librte_eal/ppc/include/rte_altivec.h
> @@ -7,6 +7,9 @@
>  #define _RTE_ALTIVEC_H_
>
>  /* To include altivec.h, GCC version must be >= 4.8 */
> +#ifdef __clang__
> +#define vector __vector
> +#endif
>  #include <altivec.h>
>
>  /*
> diff --git a/lib/librte_eal/ppc/include/rte_cycles.h b/lib/librte_eal/ppc/include/rte_cycles.h
> index 5585f9273..9925d1d0d 100644
> --- a/lib/librte_eal/ppc/include/rte_cycles.h
> +++ b/lib/librte_eal/ppc/include/rte_cycles.h
> @@ -10,7 +10,9 @@
>  extern "C" {
>  #endif
>
> +#ifdef __GLIBC__
>  #include <sys/platform/ppc.h>
> +#endif
>
>  #include "generic/rte_cycles.h"
>
> @@ -26,7 +28,13 @@ extern "C" {
>  static inline uint64_t
>  rte_rdtsc(void)
>  {
> +#ifdef __GLIBC__
>         return __ppc_get_timebase();
> +#else
> +       uint64_t __tb;
> +       __asm__ volatile ("mfspr %0, 268" : "=r" (__tb));
> +       return __tb;
> +#endif
>  }
>
>  static inline uint64_t
> --
> 2.30.1
>

Re: [dpdk-dev] [PATCH] ppc64le: fix build with Clang and without glibc

[David Christensen]

On 3/11/21 8:11 AM, Piotr Kubaj wrote:
> There are couple of issues when building with Clang:
> 1. vector is a keyword and should not be used in code. I undefined it,
> but it would probably be better to just change the variable name.
> 2. vector long is deprecated by Clang and should not be used. I switched
> here to vector int.
> 3. Additionally, sys/platform/ppc.h is glibc-dependant and is not
> available in other libc's. Use the portable method of reading TBR when
> glibc is not used.  Taken from
> https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/powerpc/sys/platform/ppc.h
> 
> Signed-off-by: Piotr Kubaj <pkubaj@FreeBSD.org>
> ---

Build with patch on my POWER9 system with RHEL 8.3 (gcc 8.3.1 20191121) 
generates the following errors:


ninja -C build
ninja: Entering directory `build'
[1221/2455] Compiling C object 
'drivers/a715181@@tmp_rte_net_i40e@sta/net_i40e_i40e_rxtx_vec_altivec.c.o'.
../drivers/net/i40e/i40e_rxtx_vec_altivec.c: In function 
‘_recv_raw_pkts_vec’:
../drivers/net/i40e/i40e_rxtx_vec_altivec.c:243:35: warning: conversion 
from ‘long long unsigned int’ to ‘unsigned int’ changes value from 
‘4294967297’ to ‘1’ [-Woverflow]
   dd_check = (vector unsigned int){0x0000000100000001ULL,
                                    ^~~~~~~~~~~~~~~~~~~~~
../drivers/net/i40e/i40e_rxtx_vec_altivec.c:244:8: warning: conversion 
from ‘long long unsigned int’ to ‘unsigned int’ changes value from 
‘4294967297’ to ‘1’ [-Woverflow]
         0x0000000100000001ULL};
         ^~~~~~~~~~~~~~~~~~~~~
../drivers/net/i40e/i40e_rxtx_vec_altivec.c:247:36: warning: conversion 
from ‘long long unsigned int’ to ‘unsigned int’ changes value from 
‘8589934594’ to ‘2’ [-Woverflow]
   eop_check = (vector unsigned int){0x0000000200000002ULL,
                                     ^~~~~~~~~~~~~~~~~~~~~
../drivers/net/i40e/i40e_rxtx_vec_altivec.c:248:9: warning: conversion 
from ‘long long unsigned int’ to ‘unsigned int’ changes value from 
‘8589934594’ to ‘2’ [-Woverflow]
          0x0000000200000002ULL};
          ^~~~~~~~~~~~~~~~~~~~~
[1736/2455] Compiling C object 
'drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_evdev.c.o'.
In file included from ../drivers/event/dsw/dsw_evdev.c:7:
../lib/librte_eal/ppc/include/rte_cycles.h: In function ‘rte_rdtsc’:
../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: implicit 
declaration of function ‘__ppc_get_timebase’; did you mean 
‘__builtin_ppc_get_timebase’? [-Wimplicit-function-declaration]
   return __ppc_get_timebase();
          ^~~~~~~~~~~~~~~~~~
          __builtin_ppc_get_timebase
../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: nested extern 
declaration of ‘__ppc_get_timebase’ [-Wnested-externs]
[1862/2455] Compiling C object 
'app/a172ced@@dpdk-testpmd@exe/test-pmd_ieee1588fwd.c.o'.
In file included from ../app/test-pmd/ieee1588fwd.c:6:
../lib/librte_eal/ppc/include/rte_cycles.h: In function ‘rte_rdtsc’:
../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: implicit 
declaration of function ‘__ppc_get_timebase’; did you mean 
‘__builtin_ppc_get_timebase’? [-Wimplicit-function-declaration]
   return __ppc_get_timebase();
          ^~~~~~~~~~~~~~~~~~
          __builtin_ppc_get_timebase
../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: nested extern 
declaration of ‘__ppc_get_timebase’ [-Wnested-externs]
[2330/2455] Linking target drivers/librte_event_dsw.so.21.2.
FAILED: drivers/librte_event_dsw.so.21.2
cc  -o drivers/librte_event_dsw.so.21.2 
'drivers/a715181@@rte_event_dsw@sha/meson-generated_.._rte_event_dsw.pmd.c.o' 
'drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_evdev.c.o' 
'drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_event.c.o' 
'drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_xstats.c.o' 
-Wl,--no-undefined -Wl,--as-needed -Wl,-O1 -shared -fPIC 
-Wl,--start-group -Wl,-soname,librte_event_dsw.so.21 -Wl,--no-as-needed 
-pthread -lm -ldl -lnuma lib/librte_eventdev.so.21.2 
lib/librte_eal.so.21.2 lib/librte_kvargs.so.21.2 
lib/librte_telemetry.so.21.2 lib/librte_ring.so.21.2 
lib/librte_ethdev.so.21.2 lib/librte_net.so.21.2 lib/librte_mbuf.so.21.2 
lib/librte_mempool.so.21.2 lib/librte_meter.so.21.2 
lib/librte_hash.so.21.2 lib/librte_rcu.so.21.2 lib/librte_timer.so.21.2 
lib/librte_cryptodev.so.21.2 drivers/librte_bus_vdev.so.21.2 
-Wl,--end-group 
-Wl,--version-script=/home/drc/src/dpdk/drivers/event/dsw/version.map 
'-Wl,-rpath,$ORIGIN/../lib:$ORIGIN/' 
-Wl,-rpath-link,/home/drc/src/dpdk/build/lib:/home/drc/src/dpdk/build/drivers
drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_evdev.c.o: In 
function `dsw_start':
dsw_evdev.c:(.text+0x1078): undefined reference to `__ppc_get_timebase'
collect2: error: ld returned 1 exit status
[2359/2455] Compiling C object 
'app/test/3062f5d@@dpdk-test@exe/test_trace_perf.c.o'.
In file included from ../app/test/test_trace_perf.c:5:
../lib/librte_eal/ppc/include/rte_cycles.h: In function ‘rte_rdtsc’:
../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: implicit 
declaration of function ‘__ppc_get_timebase’; did you mean 
‘__builtin_ppc_get_timebase’? [-Wimplicit-function-declaration]
   return __ppc_get_timebase();
          ^~~~~~~~~~~~~~~~~~
          __builtin_ppc_get_timebase
../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: nested extern 
declaration of ‘__ppc_get_timebase’ [-Wnested-externs]
[2366/2455] Compiling C object 
'drivers/a715181@@tmp_rte_event_octeontx2@sta/event_octeontx2_otx2_worker_dual.c.o'.
ninja: build stopped: subcommand failed.

Re: [dpdk-dev] [PATCH] ppc64le: fix build with Clang and without glibc

[Piotr Kubaj]

[-- Attachment #1.1: Type: text/plain, Size: 6238 bytes --]

Thank you for your input.

I did not have Linux installed on my box previously and assumed
__GLIBC__ is always defined when glibc i used.

I just tested that this patch works on both Linux (Fedora 33) and
FreeBSD (13.0-RC3 powerpc64le).

On 21-03-15 12:48:19, David Christensen wrote:
> 
> 
> On 3/11/21 8:11 AM, Piotr Kubaj wrote:
> > There are couple of issues when building with Clang:
> > 1. vector is a keyword and should not be used in code. I undefined it,
> > but it would probably be better to just change the variable name.
> > 2. vector long is deprecated by Clang and should not be used. I switched
> > here to vector int.
> > 3. Additionally, sys/platform/ppc.h is glibc-dependant and is not
> > available in other libc's. Use the portable method of reading TBR when
> > glibc is not used.  Taken from
> > https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/powerpc/sys/platform/ppc.h
> > 
> > Signed-off-by: Piotr Kubaj <pkubaj@FreeBSD.org>
> > ---
> 
> Build with patch on my POWER9 system with RHEL 8.3 (gcc 8.3.1 20191121) 
> generates the following errors:
> 
> 
> ninja -C build
> ninja: Entering directory `build'
> [1221/2455] Compiling C object 
> 'drivers/a715181@@tmp_rte_net_i40e@sta/net_i40e_i40e_rxtx_vec_altivec.c.o'.
> ../drivers/net/i40e/i40e_rxtx_vec_altivec.c: In function 
> ‘_recv_raw_pkts_vec’:
> ../drivers/net/i40e/i40e_rxtx_vec_altivec.c:243:35: warning: conversion 
> from ‘long long unsigned int’ to ‘unsigned int’ changes value from 
> ‘4294967297’ to ‘1’ [-Woverflow]
>    dd_check = (vector unsigned int){0x0000000100000001ULL,
>                                     ^~~~~~~~~~~~~~~~~~~~~
> ../drivers/net/i40e/i40e_rxtx_vec_altivec.c:244:8: warning: conversion 
> from ‘long long unsigned int’ to ‘unsigned int’ changes value from 
> ‘4294967297’ to ‘1’ [-Woverflow]
>          0x0000000100000001ULL};
>          ^~~~~~~~~~~~~~~~~~~~~
> ../drivers/net/i40e/i40e_rxtx_vec_altivec.c:247:36: warning: conversion 
> from ‘long long unsigned int’ to ‘unsigned int’ changes value from 
> ‘8589934594’ to ‘2’ [-Woverflow]
>    eop_check = (vector unsigned int){0x0000000200000002ULL,
>                                      ^~~~~~~~~~~~~~~~~~~~~
> ../drivers/net/i40e/i40e_rxtx_vec_altivec.c:248:9: warning: conversion 
> from ‘long long unsigned int’ to ‘unsigned int’ changes value from 
> ‘8589934594’ to ‘2’ [-Woverflow]
>           0x0000000200000002ULL};
>           ^~~~~~~~~~~~~~~~~~~~~
> [1736/2455] Compiling C object 
> 'drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_evdev.c.o'.
> In file included from ../drivers/event/dsw/dsw_evdev.c:7:
> ../lib/librte_eal/ppc/include/rte_cycles.h: In function ‘rte_rdtsc’:
> ../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: implicit 
> declaration of function ‘__ppc_get_timebase’; did you mean 
> ‘__builtin_ppc_get_timebase’? [-Wimplicit-function-declaration]
>    return __ppc_get_timebase();
>           ^~~~~~~~~~~~~~~~~~
>           __builtin_ppc_get_timebase
> ../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: nested extern 
> declaration of ‘__ppc_get_timebase’ [-Wnested-externs]
> [1862/2455] Compiling C object 
> 'app/a172ced@@dpdk-testpmd@exe/test-pmd_ieee1588fwd.c.o'.
> In file included from ../app/test-pmd/ieee1588fwd.c:6:
> ../lib/librte_eal/ppc/include/rte_cycles.h: In function ‘rte_rdtsc’:
> ../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: implicit 
> declaration of function ‘__ppc_get_timebase’; did you mean 
> ‘__builtin_ppc_get_timebase’? [-Wimplicit-function-declaration]
>    return __ppc_get_timebase();
>           ^~~~~~~~~~~~~~~~~~
>           __builtin_ppc_get_timebase
> ../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: nested extern 
> declaration of ‘__ppc_get_timebase’ [-Wnested-externs]
> [2330/2455] Linking target drivers/librte_event_dsw.so.21.2.
> FAILED: drivers/librte_event_dsw.so.21.2
> cc  -o drivers/librte_event_dsw.so.21.2 
> 'drivers/a715181@@rte_event_dsw@sha/meson-generated_.._rte_event_dsw.pmd.c.o' 
> 'drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_evdev.c.o' 
> 'drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_event.c.o' 
> 'drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_xstats.c.o' 
> -Wl,--no-undefined -Wl,--as-needed -Wl,-O1 -shared -fPIC 
> -Wl,--start-group -Wl,-soname,librte_event_dsw.so.21 -Wl,--no-as-needed 
> -pthread -lm -ldl -lnuma lib/librte_eventdev.so.21.2 
> lib/librte_eal.so.21.2 lib/librte_kvargs.so.21.2 
> lib/librte_telemetry.so.21.2 lib/librte_ring.so.21.2 
> lib/librte_ethdev.so.21.2 lib/librte_net.so.21.2 lib/librte_mbuf.so.21.2 
> lib/librte_mempool.so.21.2 lib/librte_meter.so.21.2 
> lib/librte_hash.so.21.2 lib/librte_rcu.so.21.2 lib/librte_timer.so.21.2 
> lib/librte_cryptodev.so.21.2 drivers/librte_bus_vdev.so.21.2 
> -Wl,--end-group 
> -Wl,--version-script=/home/drc/src/dpdk/drivers/event/dsw/version.map 
> '-Wl,-rpath,$ORIGIN/../lib:$ORIGIN/' 
> -Wl,-rpath-link,/home/drc/src/dpdk/build/lib:/home/drc/src/dpdk/build/drivers
> drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_evdev.c.o: In 
> function `dsw_start':
> dsw_evdev.c:(.text+0x1078): undefined reference to `__ppc_get_timebase'
> collect2: error: ld returned 1 exit status
> [2359/2455] Compiling C object 
> 'app/test/3062f5d@@dpdk-test@exe/test_trace_perf.c.o'.
> In file included from ../app/test/test_trace_perf.c:5:
> ../lib/librte_eal/ppc/include/rte_cycles.h: In function ‘rte_rdtsc’:
> ../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: implicit 
> declaration of function ‘__ppc_get_timebase’; did you mean 
> ‘__builtin_ppc_get_timebase’? [-Wimplicit-function-declaration]
>    return __ppc_get_timebase();
>           ^~~~~~~~~~~~~~~~~~
>           __builtin_ppc_get_timebase
> ../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: nested extern 
> declaration of ‘__ppc_get_timebase’ [-Wnested-externs]
> [2366/2455] Compiling C object 
> 'drivers/a715181@@tmp_rte_event_octeontx2@sta/event_octeontx2_otx2_worker_dual.c.o'.
> ninja: build stopped: subcommand failed.

Re: [dpdk-dev] [PATCH] ppc64le: fix build with Clang and without glibc

[Piotr Kubaj]

[-- Attachment #1.1: Type: text/plain, Size: 6097 bytes --]

Looks like I forgot to commit the change that includes headers for sysctlbyname().

Patch attached.

On 21-03-15 12:48:19, David Christensen wrote:
> 
> 
> On 3/11/21 8:11 AM, Piotr Kubaj wrote:
> > There are couple of issues when building with Clang:
> > 1. vector is a keyword and should not be used in code. I undefined it,
> > but it would probably be better to just change the variable name.
> > 2. vector long is deprecated by Clang and should not be used. I switched
> > here to vector int.
> > 3. Additionally, sys/platform/ppc.h is glibc-dependant and is not
> > available in other libc's. Use the portable method of reading TBR when
> > glibc is not used.  Taken from
> > https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/powerpc/sys/platform/ppc.h
> > 
> > Signed-off-by: Piotr Kubaj <pkubaj@FreeBSD.org>
> > ---
> 
> Build with patch on my POWER9 system with RHEL 8.3 (gcc 8.3.1 20191121) 
> generates the following errors:
> 
> 
> ninja -C build
> ninja: Entering directory `build'
> [1221/2455] Compiling C object 
> 'drivers/a715181@@tmp_rte_net_i40e@sta/net_i40e_i40e_rxtx_vec_altivec.c.o'.
> ../drivers/net/i40e/i40e_rxtx_vec_altivec.c: In function 
> ‘_recv_raw_pkts_vec’:
> ../drivers/net/i40e/i40e_rxtx_vec_altivec.c:243:35: warning: conversion 
> from ‘long long unsigned int’ to ‘unsigned int’ changes value from 
> ‘4294967297’ to ‘1’ [-Woverflow]
>    dd_check = (vector unsigned int){0x0000000100000001ULL,
>                                     ^~~~~~~~~~~~~~~~~~~~~
> ../drivers/net/i40e/i40e_rxtx_vec_altivec.c:244:8: warning: conversion 
> from ‘long long unsigned int’ to ‘unsigned int’ changes value from 
> ‘4294967297’ to ‘1’ [-Woverflow]
>          0x0000000100000001ULL};
>          ^~~~~~~~~~~~~~~~~~~~~
> ../drivers/net/i40e/i40e_rxtx_vec_altivec.c:247:36: warning: conversion 
> from ‘long long unsigned int’ to ‘unsigned int’ changes value from 
> ‘8589934594’ to ‘2’ [-Woverflow]
>    eop_check = (vector unsigned int){0x0000000200000002ULL,
>                                      ^~~~~~~~~~~~~~~~~~~~~
> ../drivers/net/i40e/i40e_rxtx_vec_altivec.c:248:9: warning: conversion 
> from ‘long long unsigned int’ to ‘unsigned int’ changes value from 
> ‘8589934594’ to ‘2’ [-Woverflow]
>           0x0000000200000002ULL};
>           ^~~~~~~~~~~~~~~~~~~~~
> [1736/2455] Compiling C object 
> 'drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_evdev.c.o'.
> In file included from ../drivers/event/dsw/dsw_evdev.c:7:
> ../lib/librte_eal/ppc/include/rte_cycles.h: In function ‘rte_rdtsc’:
> ../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: implicit 
> declaration of function ‘__ppc_get_timebase’; did you mean 
> ‘__builtin_ppc_get_timebase’? [-Wimplicit-function-declaration]
>    return __ppc_get_timebase();
>           ^~~~~~~~~~~~~~~~~~
>           __builtin_ppc_get_timebase
> ../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: nested extern 
> declaration of ‘__ppc_get_timebase’ [-Wnested-externs]
> [1862/2455] Compiling C object 
> 'app/a172ced@@dpdk-testpmd@exe/test-pmd_ieee1588fwd.c.o'.
> In file included from ../app/test-pmd/ieee1588fwd.c:6:
> ../lib/librte_eal/ppc/include/rte_cycles.h: In function ‘rte_rdtsc’:
> ../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: implicit 
> declaration of function ‘__ppc_get_timebase’; did you mean 
> ‘__builtin_ppc_get_timebase’? [-Wimplicit-function-declaration]
>    return __ppc_get_timebase();
>           ^~~~~~~~~~~~~~~~~~
>           __builtin_ppc_get_timebase
> ../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: nested extern 
> declaration of ‘__ppc_get_timebase’ [-Wnested-externs]
> [2330/2455] Linking target drivers/librte_event_dsw.so.21.2.
> FAILED: drivers/librte_event_dsw.so.21.2
> cc  -o drivers/librte_event_dsw.so.21.2 
> 'drivers/a715181@@rte_event_dsw@sha/meson-generated_.._rte_event_dsw.pmd.c.o' 
> 'drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_evdev.c.o' 
> 'drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_event.c.o' 
> 'drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_xstats.c.o' 
> -Wl,--no-undefined -Wl,--as-needed -Wl,-O1 -shared -fPIC 
> -Wl,--start-group -Wl,-soname,librte_event_dsw.so.21 -Wl,--no-as-needed 
> -pthread -lm -ldl -lnuma lib/librte_eventdev.so.21.2 
> lib/librte_eal.so.21.2 lib/librte_kvargs.so.21.2 
> lib/librte_telemetry.so.21.2 lib/librte_ring.so.21.2 
> lib/librte_ethdev.so.21.2 lib/librte_net.so.21.2 lib/librte_mbuf.so.21.2 
> lib/librte_mempool.so.21.2 lib/librte_meter.so.21.2 
> lib/librte_hash.so.21.2 lib/librte_rcu.so.21.2 lib/librte_timer.so.21.2 
> lib/librte_cryptodev.so.21.2 drivers/librte_bus_vdev.so.21.2 
> -Wl,--end-group 
> -Wl,--version-script=/home/drc/src/dpdk/drivers/event/dsw/version.map 
> '-Wl,-rpath,$ORIGIN/../lib:$ORIGIN/' 
> -Wl,-rpath-link,/home/drc/src/dpdk/build/lib:/home/drc/src/dpdk/build/drivers
> drivers/a715181@@tmp_rte_event_dsw@sta/event_dsw_dsw_evdev.c.o: In 
> function `dsw_start':
> dsw_evdev.c:(.text+0x1078): undefined reference to `__ppc_get_timebase'
> collect2: error: ld returned 1 exit status
> [2359/2455] Compiling C object 
> 'app/test/3062f5d@@dpdk-test@exe/test_trace_perf.c.o'.
> In file included from ../app/test/test_trace_perf.c:5:
> ../lib/librte_eal/ppc/include/rte_cycles.h: In function ‘rte_rdtsc’:
> ../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: implicit 
> declaration of function ‘__ppc_get_timebase’; did you mean 
> ‘__builtin_ppc_get_timebase’? [-Wimplicit-function-declaration]
>    return __ppc_get_timebase();
>           ^~~~~~~~~~~~~~~~~~
>           __builtin_ppc_get_timebase
> ../lib/librte_eal/ppc/include/rte_cycles.h:32:9: warning: nested extern 
> declaration of ‘__ppc_get_timebase’ [-Wnested-externs]
> [2366/2455] Compiling C object 
> 'drivers/a715181@@tmp_rte_event_octeontx2@sta/event_octeontx2_otx2_worker_dual.c.o'.
> ninja: build stopped: subcommand failed.

Re: [dpdk-dev] [PATCH] ppc64le: fix build with Clang and without glibc

[David Marchand]

On Tue, Mar 23, 2021 at 6:48 PM Piotr Kubaj <pkubaj@anongoth.pl> wrote:
>
> Looks like I forgot to commit the change that includes headers for sysctlbyname().
>
> Patch attached.

The mailing list drops attachments.
Please submit a v2.
Thanks.


-- 
David Marchand

Re: [dpdk-dev] [PATCH] ppc64le: fix build with Clang and without glibc

[David Christensen]

On 5/5/21 3:39 PM, Piotr Kubaj wrote:
> diff --git a/lib/librte_eal/ppc/include/rte_altivec.h b/lib/librte_eal/ppc/include/rte_altivec.h
> index 1551a9454..3fcc819c1 100644
> --- a/lib/librte_eal/ppc/include/rte_altivec.h
> +++ b/lib/librte_eal/ppc/include/rte_altivec.h
> @@ -7,6 +7,9 @@
>   #define_RTE_ALTIVEC_H_
> 
>   /* To include altivec.h, GCC version must be >= 4.8 */
> +#ifdef __clang__
> +#define vector __vector
> +#endif
>   #include <altivec.h>
> 
>   /*
> diff --git a/lib/librte_eal/ppc/include/rte_cycles.h b/lib/librte_eal/ppc/include/rte_cycles.h
> index 5585f9273..a8307ceaf 100644
> --- a/lib/librte_eal/ppc/include/rte_cycles.h
> +++ b/lib/librte_eal/ppc/include/rte_cycles.h
> @@ -10,7 +10,13 @@
>   extern "C" {
>   #endif
> 
> +#ifdef linux
> +#include <features.h>
> +#endif
> +
> +#ifdef __GLIBC__
>   #include <sys/platform/ppc.h>
> +#endif
> 
>   #include "generic/rte_cycles.h"
> 
> @@ -26,7 +32,13 @@ extern "C" {
>   static inline uint64_t
>   rte_rdtsc(void)
>   {
> +#ifdef __GLIBC__
>          return __ppc_get_timebase();
> +#else
> +       uint64_t __tb;
> +       __asm__ volatile ("mfspr %0, 268" : "=r" (__tb));
> +       return __tb;
> +#endif
>   }
> 
>   static inline uint64_t
> diff --git a/lib/librte_eal/ppc/rte_cycles.c b/lib/librte_eal/ppc/rte_cycles.c
> index 3180adb0f..48545c4d6 100644
> --- a/lib/librte_eal/ppc/rte_cycles.c
> +++ b/lib/librte_eal/ppc/rte_cycles.c
> @@ -2,12 +2,28 @@
>    * Copyright (C) IBM Corporation 2019.
>    */
> 
> +#ifdef linux
> +#include <features.h>
> +#elif defined(__FreeBSD__)
> +#include <sys/types.h>
> +#include <sys/sysctl.h>
> +#endif
> +
> +#ifdef __GLIBC__
>   #include <sys/platform/ppc.h>
> +#endif
> 
>   #include "eal_private.h"
> 
>   uint64_t
>   get_tsc_freq_arch(void)
>   {
> +#ifdef __GLIBC__
>          return __ppc_get_timebase_freq();
> +#elif defined(__FreeBSD__)
> +       uint64_t freq;
> +       size_t length = sizeof(freq);
> +       sysctlbyname("kern.timecounter.tc.timebase.frequency", &freq, &length, NULL, 0);
> +       return freq;
> +#endif
>   }
> --
> 2.31.0

Reviewed-by: David Christensen <drc@linux.vnet.ibm.com>

Re: [dpdk-dev] [PATCH] ppc64le: fix build with Clang and without glibc

[David Christensen]

On 5/5/21 3:39 PM, Piotr Kubaj wrote:
>   lib/librte_eal/ppc/include/rte_altivec.h |  3 +++
>   lib/librte_eal/ppc/include/rte_cycles.h  | 12 ++++++++++++
>   lib/librte_eal/ppc/rte_cycles.c          | 16 ++++++++++++++++

Directory path "librte_eal" has been changed to "eal" so a v3 patch is 
likely needed.

Dave

Re: [dpdk-dev] [PATCH] ppc64le: fix build with Clang and without glibc

[David Marchand]

On Sat, May 8, 2021 at 2:25 AM Piotr Kubaj <pkubaj@anongoth.pl> wrote:
>
> Including below.
> From 87ad59cc894b227444936fb6a7968932abdc460f Mon Sep 17 00:00:00 2001
> From: Piotr Kubaj <pkubaj@FreeBSD.org>
> Date: Tue, 23 Mar 2021 00:40:47 +0100
> Subject: [PATCH] ppc64le: fix build without glibc
>
> __ppc_get_timebase() is only present when glibc is used.
>
> Signed-off-by: Piotr Kubaj <pkubaj@FreeBSD.org>


I can't find this new revision of the patch in patchwork and I am not sure why.
Please, send this patch like you did for your v1, but properly
versioned v3 (if I counted correctly).
Thanks.


-- 
David Marchand