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/* Copyright (c) 2013-2018, Linaro Limited
* Copyright (c) 2013, Nokia Solutions and Networks
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "config.h"
#include <odp_packet_io_internal.h>
#include <odp_classification_internal.h>
#include <errno.h>
int sock_stats_reset_fd(pktio_entry_t *pktio_entry, int fd)
{
int err = 0;
odp_pktio_stats_t cur_stats;
if (pktio_entry->s.stats_type == STATS_UNSUPPORTED) {
memset(&pktio_entry->s.stats, 0,
sizeof(odp_pktio_stats_t));
return 0;
}
memset(&cur_stats, 0, sizeof(odp_pktio_stats_t));
if (pktio_entry->s.stats_type == STATS_ETHTOOL) {
(void)ethtool_stats_get_fd(fd,
pktio_entry->s.name,
&cur_stats);
} else if (pktio_entry->s.stats_type == STATS_SYSFS) {
err = sysfs_stats(pktio_entry, &cur_stats);
if (err != 0)
ODP_ERR("stats error\n");
}
if (err == 0)
memcpy(&pktio_entry->s.stats, &cur_stats,
sizeof(odp_pktio_stats_t));
return err;
}
int sock_stats_fd(pktio_entry_t *pktio_entry,
odp_pktio_stats_t *stats,
int fd)
{
odp_pktio_stats_t cur_stats;
int ret = 0;
if (pktio_entry->s.stats_type == STATS_UNSUPPORTED)
return 0;
memset(&cur_stats, 0, sizeof(odp_pktio_stats_t));
if (pktio_entry->s.stats_type == STATS_ETHTOOL) {
(void)ethtool_stats_get_fd(fd,
pktio_entry->s.name,
&cur_stats);
} else if (pktio_entry->s.stats_type == STATS_SYSFS) {
sysfs_stats(pktio_entry, &cur_stats);
}
stats->in_octets = cur_stats.in_octets -
pktio_entry->s.stats.in_octets;
stats->in_ucast_pkts = cur_stats.in_ucast_pkts -
pktio_entry->s.stats.in_ucast_pkts;
stats->in_discards = cur_stats.in_discards -
pktio_entry->s.stats.in_discards;
stats->in_errors = cur_stats.in_errors -
pktio_entry->s.stats.in_errors;
stats->in_unknown_protos = cur_stats.in_unknown_protos -
pktio_entry->s.stats.in_unknown_protos;
stats->out_octets = cur_stats.out_octets -
pktio_entry->s.stats.out_octets;
stats->out_ucast_pkts = cur_stats.out_ucast_pkts -
pktio_entry->s.stats.out_ucast_pkts;
stats->out_discards = cur_stats.out_discards -
pktio_entry->s.stats.out_discards;
stats->out_errors = cur_stats.out_errors -
pktio_entry->s.stats.out_errors;
return ret;
}
static int sock_recv_mq_tmo_select(pktio_entry_t * const *entry,
const int index[],
unsigned num_q, unsigned *from,
odp_packet_t packets[], int num,
uint64_t usecs, fd_set *readfds,
int maxfd)
{
struct timeval timeout;
unsigned i;
int ret;
for (i = 0; i < num_q; i++) {
ret = entry[i]->s.ops->recv(entry[i], index[i], packets, num);
if (ret > 0 && from)
*from = i;
if (ret != 0)
return ret;
}
timeout.tv_sec = usecs / (1000 * 1000);
timeout.tv_usec = usecs - timeout.tv_sec * (1000ULL * 1000ULL);
if (select(maxfd + 1, readfds, NULL, NULL,
usecs == ODP_PKTIN_WAIT ? NULL : &timeout) == 0)
return 0;
for (i = 0; i < num_q; i++) {
ret = entry[i]->s.ops->recv(entry[i], index[i], packets, num);
if (ret > 0 && from)
*from = i;
if (ret != 0)
return ret;
}
return 0;
}
int sock_recv_mq_tmo_try_int_driven(const struct odp_pktin_queue_t queues[],
unsigned num_q, unsigned *from,
odp_packet_t packets[], int num,
uint64_t usecs, int *trial_successful)
{
unsigned i;
pktio_entry_t *entry[num_q];
int index[num_q];
fd_set readfds;
int maxfd = -1;
int (*impl)(pktio_entry_t *entry[], int index[], int num_q,
odp_packet_t packets[], int num, unsigned *from,
uint64_t wait_usecs) = NULL;
int impl_set = 0;
/* First, we get pktio entries and queue indices. We then see if the
implementation function pointers are the same. If they are the
same, impl will be set to non-NULL; otherwise it will be NULL. */
for (i = 0; i < num_q; i++) {
entry[i] = get_pktio_entry(queues[i].pktio);
index[i] = queues[i].index;
if (entry[i] == NULL) {
ODP_DBG("pktio entry %d does not exist\n",
queues[i].pktio);
*trial_successful = 0;
return -1;
}
if (entry[i]->s.ops->recv_mq_tmo == NULL &&
entry[i]->s.ops->fd_set == NULL) {
*trial_successful = 0;
return 0;
}
if (!impl_set) {
impl = entry[i]->s.ops->recv_mq_tmo;
impl_set = 1;
} else {
if (impl != entry[i]->s.ops->recv_mq_tmo) {
impl = NULL;
break;
}
}
}
/* Check whether we can call the compatible implementation */
if (impl != NULL) {
*trial_successful = 1;
return impl(entry, index, num_q, packets, num, from, usecs);
}
/* Get file descriptor sets of devices. maxfd will be -1 if this
fails. */
FD_ZERO(&readfds);
for (i = 0; i < num_q; i++) {
if (entry[i]->s.ops->fd_set) {
int maxfd2;
maxfd2 = entry[i]->s.ops->fd_set(
entry[i], queues[i].index, &readfds);
if (maxfd2 < 0) {
maxfd = -1;
break;
}
if (maxfd2 > maxfd)
maxfd = maxfd2;
} else {
maxfd = -1;
}
}
/* Check whether we can call the select() implementation */
if (maxfd >= 0) {
*trial_successful = 1;
return sock_recv_mq_tmo_select(entry, index, num_q, from,
packets, num, usecs,
&readfds, maxfd);
}
/* No mechanism worked. Set trial_successful to 0 so that polling will
be used by the main implementation. */
*trial_successful = 0;
return 0;
}
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