* [dpdk-dev] [PATCH V2 1/2] net/tap: convert to new Tx offloads API
2018-01-04 18:54 [dpdk-dev] [PATCH V2 0/2] net/tap: convert to new ethdev offloads API Moti Haimovsky
@ 2018-01-04 18:54 ` Moti Haimovsky
2018-01-04 18:54 ` [dpdk-dev] [PATCH V2 2/2] net/tap: convert to new Rx " Moti Haimovsky
1 sibling, 0 replies; 3+ messages in thread
From: Moti Haimovsky @ 2018-01-04 18:54 UTC (permalink / raw)
To: pascal.mazon; +Cc: dev, Moti Haimovsky
Ethdev Tx offloads API has changed since:
commit cba7f53b717d ("ethdev: introduce Tx queue offloads API")
This commit support the new Tx offloads API.
Signed-off-by: Moti Haimovsky <motih@mellanox.com>
---
drivers/net/tap/rte_eth_tap.c | 96 +++++++++++++++++++++++++++++++++++++------
drivers/net/tap/rte_eth_tap.h | 1 +
2 files changed, 85 insertions(+), 12 deletions(-)
diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
index 6b27679..5925709 100644
--- a/drivers/net/tap/rte_eth_tap.c
+++ b/drivers/net/tap/rte_eth_tap.c
@@ -53,6 +53,7 @@
#include <sys/mman.h>
#include <errno.h>
#include <signal.h>
+#include <stdbool.h>
#include <stdint.h>
#include <sys/uio.h>
#include <unistd.h>
@@ -379,6 +380,42 @@ enum ioctl_mode {
return num_rx;
}
+static uint64_t
+tap_tx_offload_get_port_capa(void)
+{
+ /*
+ * In order to support legacy apps,
+ * report capabilities also as port capabilities.
+ */
+ return DEV_TX_OFFLOAD_IPV4_CKSUM |
+ DEV_TX_OFFLOAD_UDP_CKSUM |
+ DEV_TX_OFFLOAD_TCP_CKSUM;
+}
+
+static uint64_t
+tap_tx_offload_get_queue_capa(void)
+{
+ return DEV_TX_OFFLOAD_IPV4_CKSUM |
+ DEV_TX_OFFLOAD_UDP_CKSUM |
+ DEV_TX_OFFLOAD_TCP_CKSUM;
+}
+
+static bool
+tap_txq_are_offloads_valid(struct rte_eth_dev *dev, uint64_t offloads)
+{
+ uint64_t port_offloads = dev->data->dev_conf.txmode.offloads;
+ uint64_t queue_supp_offloads = tap_tx_offload_get_queue_capa();
+ uint64_t port_supp_offloads = tap_tx_offload_get_port_capa();
+
+ if ((offloads & (queue_supp_offloads | port_supp_offloads)) !=
+ offloads)
+ return false;
+ /* Verify we have no conflict with port offloads */
+ if ((port_offloads ^ offloads) & port_supp_offloads)
+ return false;
+ return true;
+}
+
static void
tap_tx_offload(char *packet, uint64_t ol_flags, unsigned int l2_len,
unsigned int l3_len)
@@ -465,9 +502,10 @@ enum ioctl_mode {
rte_pktmbuf_mtod(seg, void *);
seg = seg->next;
}
- if (mbuf->ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_IPV4) ||
- (mbuf->ol_flags & PKT_TX_L4_MASK) == PKT_TX_UDP_CKSUM ||
- (mbuf->ol_flags & PKT_TX_L4_MASK) == PKT_TX_TCP_CKSUM) {
+ if (txq->csum &&
+ ((mbuf->ol_flags & (PKT_TX_IP_CKSUM | PKT_TX_IPV4) ||
+ (mbuf->ol_flags & PKT_TX_L4_MASK) == PKT_TX_UDP_CKSUM ||
+ (mbuf->ol_flags & PKT_TX_L4_MASK) == PKT_TX_TCP_CKSUM))) {
/* Support only packets with all data in the same seg */
if (mbuf->nb_segs > 1)
break;
@@ -605,6 +643,17 @@ enum ioctl_mode {
static int
tap_dev_configure(struct rte_eth_dev *dev)
{
+ uint64_t supp_tx_offloads = tap_tx_offload_get_port_capa();
+ uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
+
+ if ((tx_offloads & supp_tx_offloads) != tx_offloads) {
+ rte_errno = ENOTSUP;
+ RTE_LOG(ERR, PMD,
+ "Some Tx offloads are not supported "
+ "requested 0x%lx supported 0x%lx\n",
+ tx_offloads, supp_tx_offloads);
+ return -rte_errno;
+ }
if (dev->data->nb_rx_queues > RTE_PMD_TAP_MAX_QUEUES) {
RTE_LOG(ERR, PMD,
"%s: number of rx queues %d exceeds max num of queues %d\n",
@@ -681,10 +730,9 @@ enum ioctl_mode {
dev_info->rx_offload_capa = (DEV_RX_OFFLOAD_IPV4_CKSUM |
DEV_RX_OFFLOAD_UDP_CKSUM |
DEV_RX_OFFLOAD_TCP_CKSUM);
- dev_info->tx_offload_capa =
- (DEV_TX_OFFLOAD_IPV4_CKSUM |
- DEV_TX_OFFLOAD_UDP_CKSUM |
- DEV_TX_OFFLOAD_TCP_CKSUM);
+ dev_info->tx_queue_offload_capa = tap_tx_offload_get_queue_capa();
+ dev_info->tx_offload_capa = dev_info->tx_queue_offload_capa |
+ tap_tx_offload_get_port_capa();
}
static int
@@ -1058,21 +1106,45 @@ enum ioctl_mode {
uint16_t tx_queue_id,
uint16_t nb_tx_desc __rte_unused,
unsigned int socket_id __rte_unused,
- const struct rte_eth_txconf *tx_conf __rte_unused)
+ const struct rte_eth_txconf *tx_conf)
{
struct pmd_internals *internals = dev->data->dev_private;
+ struct tx_queue *txq;
int ret;
if (tx_queue_id >= dev->data->nb_tx_queues)
return -1;
-
dev->data->tx_queues[tx_queue_id] = &internals->txq[tx_queue_id];
+ txq = dev->data->tx_queues[tx_queue_id];
+ /*
+ * Don't verify port offloads for application which
+ * use the old API.
+ */
+ if ((tx_conf != NULL) &&
+ !!(tx_conf->txq_flags & ETH_TXQ_FLAGS_IGNORE)) {
+ if (tap_txq_are_offloads_valid(dev, tx_conf->offloads)) {
+ txq->csum = !!(tx_conf->offloads &
+ (DEV_TX_OFFLOAD_IPV4_CKSUM |
+ DEV_TX_OFFLOAD_UDP_CKSUM |
+ DEV_TX_OFFLOAD_TCP_CKSUM));
+ } else {
+ rte_errno = ENOTSUP;
+ RTE_LOG(ERR, PMD,
+ "%p: Tx queue offloads 0x%lx don't match port "
+ "offloads 0x%lx or supported offloads 0x%lx",
+ (void *)dev, tx_conf->offloads,
+ dev->data->dev_conf.txmode.offloads,
+ tap_tx_offload_get_port_capa());
+ return -rte_errno;
+ }
+ }
ret = tap_setup_queue(dev, internals, tx_queue_id, 0);
if (ret == -1)
return -1;
-
- RTE_LOG(DEBUG, PMD, " TX TAP device name %s, qid %d on fd %d\n",
- internals->name, tx_queue_id, internals->txq[tx_queue_id].fd);
+ RTE_LOG(DEBUG, PMD,
+ " TX TAP device name %s, qid %d on fd %d csum %s\n",
+ internals->name, tx_queue_id, internals->txq[tx_queue_id].fd,
+ txq->csum ? "on" : "off");
return 0;
}
diff --git a/drivers/net/tap/rte_eth_tap.h b/drivers/net/tap/rte_eth_tap.h
index 829f32f..69a1a08 100644
--- a/drivers/net/tap/rte_eth_tap.h
+++ b/drivers/net/tap/rte_eth_tap.h
@@ -76,6 +76,7 @@ struct rx_queue {
struct tx_queue {
int fd;
uint16_t *mtu; /* Pointer to MTU from dev_data */
+ uint16_t csum:1; /* Enable checksum offloading */
struct pkt_stats stats; /* Stats for this TX queue */
};
--
1.8.3.1
^ permalink raw reply [flat|nested] 3+ messages in thread* [dpdk-dev] [PATCH V2 2/2] net/tap: convert to new Rx offloads API
2018-01-04 18:54 [dpdk-dev] [PATCH V2 0/2] net/tap: convert to new ethdev offloads API Moti Haimovsky
2018-01-04 18:54 ` [dpdk-dev] [PATCH V2 1/2] net/tap: convert to new Tx " Moti Haimovsky
@ 2018-01-04 18:54 ` Moti Haimovsky
1 sibling, 0 replies; 3+ messages in thread
From: Moti Haimovsky @ 2018-01-04 18:54 UTC (permalink / raw)
To: pascal.mazon; +Cc: dev, Moti Haimovsky
Ethdev Rx offloads API has changed since:
commit ce17eddefc20 ("ethdev: introduce Rx queue offloads API")
This commit support the new Rx offloads API.
Signed-off-by: Moti Haimovsky <motih@mellanox.com>
---
drivers/net/tap/rte_eth_tap.c | 66 +++++++++++++++++++++++++++++++++++++------
1 file changed, 58 insertions(+), 8 deletions(-)
diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c
index 5925709..ba3c714 100644
--- a/drivers/net/tap/rte_eth_tap.c
+++ b/drivers/net/tap/rte_eth_tap.c
@@ -286,6 +286,43 @@ enum ioctl_mode {
}
}
+static uint64_t
+tap_rx_offload_get_port_capa(void)
+{
+ /*
+ * In order to support legacy apps,
+ * report capabilities also as port capabilities.
+ */
+ return DEV_RX_OFFLOAD_SCATTER |
+ DEV_RX_OFFLOAD_IPV4_CKSUM |
+ DEV_RX_OFFLOAD_UDP_CKSUM |
+ DEV_RX_OFFLOAD_TCP_CKSUM;
+}
+
+static uint64_t
+tap_rx_offload_get_queue_capa(void)
+{
+ return DEV_RX_OFFLOAD_SCATTER |
+ DEV_RX_OFFLOAD_IPV4_CKSUM |
+ DEV_RX_OFFLOAD_UDP_CKSUM |
+ DEV_RX_OFFLOAD_TCP_CKSUM;
+}
+
+static bool
+tap_rxq_are_offloads_valid(struct rte_eth_dev *dev, uint64_t offloads)
+{
+ uint64_t port_offloads = dev->data->dev_conf.rxmode.offloads;
+ uint64_t queue_supp_offloads = tap_rx_offload_get_queue_capa();
+ uint64_t port_supp_offloads = tap_rx_offload_get_port_capa();
+
+ if ((offloads & (queue_supp_offloads | port_supp_offloads)) !=
+ offloads)
+ return false;
+ if (((port_offloads ^ offloads) & port_supp_offloads))
+ return false;
+ return true;
+}
+
/* Callback to handle the rx burst of packets to the correct interface and
* file descriptor(s) in a multi-queue setup.
*/
@@ -310,8 +347,9 @@ enum ioctl_mode {
int len;
len = readv(rxq->fd, *rxq->iovecs,
- 1 + (rxq->rxmode->enable_scatter ?
- rxq->nb_rx_desc : 1));
+ 1 +
+ (rxq->rxmode->offloads & DEV_RX_OFFLOAD_SCATTER ?
+ rxq->nb_rx_desc : 1));
if (len < (int)sizeof(struct tun_pi))
break;
@@ -366,7 +404,7 @@ enum ioctl_mode {
seg->next = NULL;
mbuf->packet_type = rte_net_get_ptype(mbuf, NULL,
RTE_PTYPE_ALL_MASK);
- if (rxq->rxmode->hw_ip_checksum)
+ if (rxq->rxmode->offloads & DEV_RX_OFFLOAD_CHECKSUM)
tap_verify_csum(mbuf);
/* account for the receive frame */
@@ -727,12 +765,12 @@ enum ioctl_mode {
dev_info->min_rx_bufsize = 0;
dev_info->pci_dev = NULL;
dev_info->speed_capa = tap_dev_speed_capa();
- dev_info->rx_offload_capa = (DEV_RX_OFFLOAD_IPV4_CKSUM |
- DEV_RX_OFFLOAD_UDP_CKSUM |
- DEV_RX_OFFLOAD_TCP_CKSUM);
+ dev_info->rx_queue_offload_capa = tap_rx_offload_get_queue_capa();
+ dev_info->rx_offload_capa = tap_rx_offload_get_port_capa() |
+ dev_info->rx_queue_offload_capa;
dev_info->tx_queue_offload_capa = tap_tx_offload_get_queue_capa();
- dev_info->tx_offload_capa = dev_info->tx_queue_offload_capa |
- tap_tx_offload_get_port_capa();
+ dev_info->tx_offload_capa = tap_tx_offload_get_port_capa() |
+ dev_info->tx_queue_offload_capa;
}
static int
@@ -1048,6 +1086,18 @@ enum ioctl_mode {
return -1;
}
+ /* Verify application offloads are valid for our port and queue. */
+ if (!tap_rxq_are_offloads_valid(dev, rx_conf->offloads)) {
+ rte_errno = ENOTSUP;
+ RTE_LOG(ERR, PMD,
+ "%p: Rx queue offloads 0x%lx don't match port "
+ "offloads 0x%lx or supported offloads 0x%lx\n",
+ (void *)dev, rx_conf->offloads,
+ dev->data->dev_conf.rxmode.offloads,
+ (tap_rx_offload_get_port_capa() |
+ tap_rx_offload_get_queue_capa()));
+ return -rte_errno;
+ }
rxq->mp = mp;
rxq->trigger_seen = 1; /* force initial burst */
rxq->in_port = dev->data->port_id;
--
1.8.3.1
^ permalink raw reply [flat|nested] 3+ messages in thread