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netdev-dpdk: Use uint8_t for port_id.

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Currently, signed integer is used for 'port_id' variable and
'-1' as identifier of bad or uninitialized 'port_id'.

This inconsistent with dpdk library and, also, in few cases,
leads to passing '-1' to dpdk functions where uint8_t expected.

Such behaviour doesn't produce any issues, but it's better to
use same type as in dpdk library for consistency.
Introduced 'dpdk_port_t' typedef for better maintainability.

Also, magic number '-1' replaced with DPDK_ETH_PORT_ID_INVALID
macro.

Signed-off-by: Ilya Maximets <i.maximets@samsung.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
Acked-by: Mark Kavanagh <mark.b.kavanagh@intel.com>
This commit is contained in:
Ilya Maximets
2017-05-19 16:37:32 +03:00
committed by Ben Pfaff
parent 5dcde09c80
commit bb37956ac0
1 changed files with 37 additions and 26 deletions
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63
lib/netdev-dpdk.c
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@@ -141,6 +141,11 @@ BUILD_ASSERT_DECL((MAX_NB_MBUF / ROUND_DOWN_POW2(MAX_NB_MBUF/MIN_NB_MBUF))
#define OVS_VHOST_QUEUE_DISABLED (-2) /* Queue was disabled by guest and not
* yet mapped to another queue. */
#define DPDK_ETH_PORT_ID_INVALID RTE_MAX_ETHPORTS
/* DPDK library uses uint8_t for port_id. */
typedef uint8_t dpdk_port_t;
#define VHOST_ENQ_RETRY_NUM 8
#define IF_NAME_SZ (PATH_MAX > IFNAMSIZ ? PATH_MAX : IFNAMSIZ)
@@ -310,7 +315,7 @@ struct dpdk_ring {
struct rte_ring *cring_tx;
struct rte_ring *cring_rx;
unsigned int user_port_id; /* User given port no, parsed from port name */
int eth_port_id; /* ethernet device port id */
dpdk_port_t eth_port_id; /* ethernet device port id */
struct ovs_list list_node OVS_GUARDED_BY(dpdk_mutex);
};
@@ -326,7 +331,7 @@ enum dpdk_hw_ol_features {
struct netdev_dpdk {
struct netdev up;
int port_id;
dpdk_port_t port_id;
int max_packet_len;
enum dpdk_dev_type type;
@@ -403,7 +408,7 @@ struct netdev_dpdk {
struct netdev_rxq_dpdk {
struct netdev_rxq up;
int port_id;
dpdk_port_t port_id;
};
static int netdev_dpdk_class_init(void);
@@ -604,12 +609,12 @@ check_link_status(struct netdev_dpdk *dev)
dev->link_reset_cnt++;
dev->link = link;
if (dev->link.link_status) {
VLOG_DBG_RL(&rl, "Port %d Link Up - speed %u Mbps - %s",
VLOG_DBG_RL(&rl, "Port %"PRIu8" Link Up - speed %u Mbps - %s",
dev->port_id, (unsigned) dev->link.link_speed,
(dev->link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
("full-duplex") : ("half-duplex"));
} else {
VLOG_DBG_RL(&rl, "Port %d Link Down", dev->port_id);
VLOG_DBG_RL(&rl, "Port %"PRIu8" Link Down", dev->port_id);
}
}
}
@@ -727,8 +732,8 @@ dpdk_eth_checksum_offload_configure(struct netdev_dpdk *dev)
if (rx_csum_ol_flag &&
(info.rx_offload_capa & rx_chksm_offload_capa) !=
rx_chksm_offload_capa) {
VLOG_WARN_ONCE("Rx checksum offload is not supported on device %d",
dev->port_id);
VLOG_WARN_ONCE("Rx checksum offload is not supported on device %"PRIu8,
dev->port_id);
dev->hw_ol_features &= ~NETDEV_RX_CHECKSUM_OFFLOAD;
return;
}
@@ -739,7 +744,8 @@ static void
dpdk_eth_flow_ctrl_setup(struct netdev_dpdk *dev) OVS_REQUIRES(dev->mutex)
{
if (rte_eth_dev_flow_ctrl_set(dev->port_id, &dev->fc_conf)) {
VLOG_WARN("Failed to enable flow control on device %d", dev->port_id);
VLOG_WARN("Failed to enable flow control on device %"PRIu8,
dev->port_id);
}
}
@@ -777,7 +783,7 @@ dpdk_eth_dev_init(struct netdev_dpdk *dev)
memset(&eth_addr, 0x0, sizeof(eth_addr));
rte_eth_macaddr_get(dev->port_id, &eth_addr);
VLOG_INFO_RL(&rl, "Port %d: "ETH_ADDR_FMT,
VLOG_INFO_RL(&rl, "Port %"PRIu8": "ETH_ADDR_FMT,
dev->port_id, ETH_ADDR_BYTES_ARGS(eth_addr.addr_bytes));
memcpy(dev->hwaddr.ea, eth_addr.addr_bytes, ETH_ADDR_LEN);
@@ -789,7 +795,7 @@ dpdk_eth_dev_init(struct netdev_dpdk *dev)
/* Get the Flow control configuration for DPDK-ETH */
diag = rte_eth_dev_flow_ctrl_get(dev->port_id, &dev->fc_conf);
if (diag) {
VLOG_DBG("cannot get flow control parameters on port=%d, err=%d",
VLOG_DBG("cannot get flow control parameters on port=%"PRIu8", err=%d",
dev->port_id, diag);
}
@@ -834,7 +840,7 @@ netdev_dpdk_alloc_txq(unsigned int n_txqs)
}
static int
common_construct(struct netdev *netdev, unsigned int port_no,
common_construct(struct netdev *netdev, dpdk_port_t port_no,
enum dpdk_dev_type type, int socket_id)
OVS_REQUIRES(dpdk_mutex)
{
@@ -919,7 +925,8 @@ vhost_common_construct(struct netdev *netdev)
return ENOMEM;
}
return common_construct(netdev, -1, DPDK_DEV_VHOST, socket_id);
return common_construct(netdev, DPDK_ETH_PORT_ID_INVALID,
DPDK_DEV_VHOST, socket_id);
}
static int
@@ -979,7 +986,8 @@ netdev_dpdk_construct(struct netdev *netdev)
int err;
ovs_mutex_lock(&dpdk_mutex);
err = common_construct(netdev, -1, DPDK_DEV_ETH, SOCKET0);
err = common_construct(netdev, DPDK_ETH_PORT_ID_INVALID,
DPDK_DEV_ETH, SOCKET0);
ovs_mutex_unlock(&dpdk_mutex);
return err;
}
@@ -1113,7 +1121,7 @@ netdev_dpdk_get_config(const struct netdev *netdev, struct smap *args)
}
static struct netdev_dpdk *
netdev_dpdk_lookup_by_port_id(int port_id)
netdev_dpdk_lookup_by_port_id(dpdk_port_t port_id)
OVS_REQUIRES(dpdk_mutex)
{
struct netdev_dpdk *dev;
@@ -1127,13 +1135,13 @@ netdev_dpdk_lookup_by_port_id(int port_id)
return NULL;
}
static int
static dpdk_port_t
netdev_dpdk_process_devargs(struct netdev_dpdk *dev,
const char *devargs, char **errp)
{
/* Get the name up to the first comma. */
char *name = xmemdup0(devargs, strcspn(devargs, ","));
uint8_t new_port_id = UINT8_MAX;
dpdk_port_t new_port_id = DPDK_ETH_PORT_ID_INVALID;
if (!rte_eth_dev_count()
|| rte_eth_dev_get_port_by_name(name, &new_port_id)
@@ -1145,9 +1153,9 @@ netdev_dpdk_process_devargs(struct netdev_dpdk *dev,
VLOG_INFO("Device '%s' attached to DPDK", devargs);
} else {
/* Attach unsuccessful */
new_port_id = DPDK_ETH_PORT_ID_INVALID;
VLOG_WARN_BUF(errp, "Error attaching device '%s' to DPDK",
devargs);
new_port_id = UINT8_MAX;
}
}
@@ -1228,8 +1236,9 @@ netdev_dpdk_set_config(struct netdev *netdev, const struct smap *args,
* is valid */
if (!(dev->devargs && !strcmp(dev->devargs, new_devargs)
&& rte_eth_dev_is_valid_port(dev->port_id))) {
int new_port_id = netdev_dpdk_process_devargs(dev, new_devargs,
errp);
dpdk_port_t new_port_id = netdev_dpdk_process_devargs(dev,
new_devargs,
errp);
if (!rte_eth_dev_is_valid_port(new_port_id)) {
err = EINVAL;
} else if (new_port_id == dev->port_id) {
@@ -1237,6 +1246,7 @@ netdev_dpdk_set_config(struct netdev *netdev, const struct smap *args,
err = 0;
} else {
struct netdev_dpdk *dup_dev;
dup_dev = netdev_dpdk_lookup_by_port_id(new_port_id);
if (dup_dev) {
VLOG_WARN_BUF(errp, "'%s' is trying to use device '%s' "
@@ -1246,6 +1256,7 @@ netdev_dpdk_set_config(struct netdev *netdev, const struct smap *args,
err = EADDRINUSE;
} else {
int sid = rte_eth_dev_socket_id(new_port_id);
dev->requested_socket_id = sid < 0 ? SOCKET0 : sid;
dev->devargs = xstrdup(new_devargs);
dev->port_id = new_port_id;
@@ -2053,7 +2064,7 @@ netdev_dpdk_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
int rte_xstats_len, rte_xstats_new_len, rte_xstats_ret;
if (rte_eth_stats_get(dev->port_id, &rte_stats)) {
VLOG_ERR("Can't get ETH statistics for port: %i.", dev->port_id);
VLOG_ERR("Can't get ETH statistics for port: %"PRIu8, dev->port_id);
ovs_mutex_unlock(&dev->mutex);
return EPROTO;
}
@@ -2061,7 +2072,7 @@ netdev_dpdk_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
/* Get length of statistics */
rte_xstats_len = rte_eth_xstats_get_names(dev->port_id, NULL, 0);
if (rte_xstats_len < 0) {
VLOG_WARN("Cannot get XSTATS values for port: %i", dev->port_id);
VLOG_WARN("Cannot get XSTATS values for port: %"PRIu8, dev->port_id);
goto out;
}
/* Reserve memory for xstats names and values */
@@ -2073,7 +2084,7 @@ netdev_dpdk_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
rte_xstats_names,
rte_xstats_len);
if (rte_xstats_new_len != rte_xstats_len) {
VLOG_WARN("Cannot get XSTATS names for port: %i.", dev->port_id);
VLOG_WARN("Cannot get XSTATS names for port: %"PRIu8, dev->port_id);
goto out;
}
/* Retreive xstats values */
@@ -2084,7 +2095,7 @@ netdev_dpdk_get_stats(const struct netdev *netdev, struct netdev_stats *stats)
netdev_dpdk_convert_xstats(stats, rte_xstats, rte_xstats_names,
rte_xstats_len);
} else {
VLOG_WARN("Cannot get XSTATS values for port: %i.", dev->port_id);
VLOG_WARN("Cannot get XSTATS values for port: %"PRIu8, dev->port_id);
}
out:
@@ -2762,7 +2773,7 @@ netdev_dpdk_vhost_class_init(void)
static int
dpdk_ring_create(const char dev_name[], unsigned int port_no,
unsigned int *eth_port_id)
dpdk_port_t *eth_port_id)
{
struct dpdk_ring *ring_pair;
char *ring_name;
@@ -2814,7 +2825,7 @@ dpdk_ring_create(const char dev_name[], unsigned int port_no,
}
static int
dpdk_ring_open(const char dev_name[], unsigned int *eth_port_id)
dpdk_ring_open(const char dev_name[], dpdk_port_t *eth_port_id)
OVS_REQUIRES(dpdk_mutex)
{
struct dpdk_ring *ring_pair;
@@ -2863,7 +2874,7 @@ netdev_dpdk_ring_send(struct netdev *netdev, int qid,
static int
netdev_dpdk_ring_construct(struct netdev *netdev)
{
unsigned int port_no = 0;
dpdk_port_t port_no = 0;
int err = 0;
ovs_mutex_lock(&dpdk_mutex);