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Diffstat (limited to 'net/core/dev.c')
-rw-r--r--net/core/dev.c137
1 files changed, 99 insertions, 38 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index ac7a7ae4614a..a46334906c94 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1069,19 +1069,6 @@ struct net_device *dev_getbyhwaddr_rcu(struct net *net, unsigned short type,
}
EXPORT_SYMBOL(dev_getbyhwaddr_rcu);
-struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type)
-{
- struct net_device *dev;
-
- ASSERT_RTNL();
- for_each_netdev(net, dev)
- if (dev->type == type)
- return dev;
-
- return NULL;
-}
-EXPORT_SYMBOL(__dev_getfirstbyhwtype);
-
struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type)
{
struct net_device *dev, *ret = NULL;
@@ -3206,7 +3193,7 @@ int skb_checksum_help(struct sk_buff *skb)
if (skb->ip_summed == CHECKSUM_COMPLETE)
goto out_set_summed;
- if (unlikely(skb_shinfo(skb)->gso_size)) {
+ if (unlikely(skb_is_gso(skb))) {
skb_warn_bad_offload(skb);
return -EINVAL;
}
@@ -3495,6 +3482,11 @@ static netdev_features_t gso_features_check(const struct sk_buff *skb,
if (gso_segs > dev->gso_max_segs)
return features & ~NETIF_F_GSO_MASK;
+ if (!skb_shinfo(skb)->gso_type) {
+ skb_warn_bad_offload(skb);
+ return features & ~NETIF_F_GSO_MASK;
+ }
+
/* Support for GSO partial features requires software
* intervention before we can actually process the packets
* so we need to strip support for any partial features now
@@ -3867,6 +3859,7 @@ sch_handle_egress(struct sk_buff *skb, int *ret, struct net_device *dev)
return skb;
/* qdisc_skb_cb(skb)->pkt_len was already set by the caller. */
+ qdisc_skb_cb(skb)->mru = 0;
mini_qdisc_bstats_cpu_update(miniq, skb);
switch (tcf_classify(skb, miniq->filter_list, &cl_res, false)) {
@@ -4950,6 +4943,7 @@ sch_handle_ingress(struct sk_buff *skb, struct packet_type **pt_prev, int *ret,
}
qdisc_skb_cb(skb)->pkt_len = skb->len;
+ qdisc_skb_cb(skb)->mru = 0;
skb->tc_at_ingress = 1;
mini_qdisc_bstats_cpu_update(miniq, skb);
@@ -6454,7 +6448,8 @@ bool napi_complete_done(struct napi_struct *n, int work_done)
WARN_ON_ONCE(!(val & NAPIF_STATE_SCHED));
- new = val & ~(NAPIF_STATE_MISSED | NAPIF_STATE_SCHED);
+ new = val & ~(NAPIF_STATE_MISSED | NAPIF_STATE_SCHED |
+ NAPIF_STATE_PREFER_BUSY_POLL);
/* If STATE_MISSED was set, leave STATE_SCHED set,
* because we will call napi->poll() one more time.
@@ -6491,10 +6486,30 @@ static struct napi_struct *napi_by_id(unsigned int napi_id)
#if defined(CONFIG_NET_RX_BUSY_POLL)
-#define BUSY_POLL_BUDGET 8
+static void __busy_poll_stop(struct napi_struct *napi, bool skip_schedule)
+{
+ if (!skip_schedule) {
+ gro_normal_list(napi);
+ __napi_schedule(napi);
+ return;
+ }
-static void busy_poll_stop(struct napi_struct *napi, void *have_poll_lock)
+ if (napi->gro_bitmask) {
+ /* flush too old packets
+ * If HZ < 1000, flush all packets.
+ */
+ napi_gro_flush(napi, HZ >= 1000);
+ }
+
+ gro_normal_list(napi);
+ clear_bit(NAPI_STATE_SCHED, &napi->state);
+}
+
+static void busy_poll_stop(struct napi_struct *napi, void *have_poll_lock, bool prefer_busy_poll,
+ u16 budget)
{
+ bool skip_schedule = false;
+ unsigned long timeout;
int rc;
/* Busy polling means there is a high chance device driver hard irq
@@ -6511,29 +6526,33 @@ static void busy_poll_stop(struct napi_struct *napi, void *have_poll_lock)
local_bh_disable();
+ if (prefer_busy_poll) {
+ napi->defer_hard_irqs_count = READ_ONCE(napi->dev->napi_defer_hard_irqs);
+ timeout = READ_ONCE(napi->dev->gro_flush_timeout);
+ if (napi->defer_hard_irqs_count && timeout) {
+ hrtimer_start(&napi->timer, ns_to_ktime(timeout), HRTIMER_MODE_REL_PINNED);
+ skip_schedule = true;
+ }
+ }
+
/* All we really want here is to re-enable device interrupts.
* Ideally, a new ndo_busy_poll_stop() could avoid another round.
*/
- rc = napi->poll(napi, BUSY_POLL_BUDGET);
+ rc = napi->poll(napi, budget);
/* We can't gro_normal_list() here, because napi->poll() might have
* rearmed the napi (napi_complete_done()) in which case it could
* already be running on another CPU.
*/
- trace_napi_poll(napi, rc, BUSY_POLL_BUDGET);
+ trace_napi_poll(napi, rc, budget);
netpoll_poll_unlock(have_poll_lock);
- if (rc == BUSY_POLL_BUDGET) {
- /* As the whole budget was spent, we still own the napi so can
- * safely handle the rx_list.
- */
- gro_normal_list(napi);
- __napi_schedule(napi);
- }
+ if (rc == budget)
+ __busy_poll_stop(napi, skip_schedule);
local_bh_enable();
}
void napi_busy_loop(unsigned int napi_id,
bool (*loop_end)(void *, unsigned long),
- void *loop_end_arg)
+ void *loop_end_arg, bool prefer_busy_poll, u16 budget)
{
unsigned long start_time = loop_end ? busy_loop_current_time() : 0;
int (*napi_poll)(struct napi_struct *napi, int budget);
@@ -6561,17 +6580,23 @@ restart:
* we avoid dirtying napi->state as much as we can.
*/
if (val & (NAPIF_STATE_DISABLE | NAPIF_STATE_SCHED |
- NAPIF_STATE_IN_BUSY_POLL))
+ NAPIF_STATE_IN_BUSY_POLL)) {
+ if (prefer_busy_poll)
+ set_bit(NAPI_STATE_PREFER_BUSY_POLL, &napi->state);
goto count;
+ }
if (cmpxchg(&napi->state, val,
val | NAPIF_STATE_IN_BUSY_POLL |
- NAPIF_STATE_SCHED) != val)
+ NAPIF_STATE_SCHED) != val) {
+ if (prefer_busy_poll)
+ set_bit(NAPI_STATE_PREFER_BUSY_POLL, &napi->state);
goto count;
+ }
have_poll_lock = netpoll_poll_lock(napi);
napi_poll = napi->poll;
}
- work = napi_poll(napi, BUSY_POLL_BUDGET);
- trace_napi_poll(napi, work, BUSY_POLL_BUDGET);
+ work = napi_poll(napi, budget);
+ trace_napi_poll(napi, work, budget);
gro_normal_list(napi);
count:
if (work > 0)
@@ -6584,7 +6609,7 @@ count:
if (unlikely(need_resched())) {
if (napi_poll)
- busy_poll_stop(napi, have_poll_lock);
+ busy_poll_stop(napi, have_poll_lock, prefer_busy_poll, budget);
preempt_enable();
rcu_read_unlock();
cond_resched();
@@ -6595,7 +6620,7 @@ count:
cpu_relax();
}
if (napi_poll)
- busy_poll_stop(napi, have_poll_lock);
+ busy_poll_stop(napi, have_poll_lock, prefer_busy_poll, budget);
preempt_enable();
out:
rcu_read_unlock();
@@ -6646,8 +6671,10 @@ static enum hrtimer_restart napi_watchdog(struct hrtimer *timer)
* NAPI_STATE_MISSED, since we do not react to a device IRQ.
*/
if (!napi_disable_pending(napi) &&
- !test_and_set_bit(NAPI_STATE_SCHED, &napi->state))
+ !test_and_set_bit(NAPI_STATE_SCHED, &napi->state)) {
+ clear_bit(NAPI_STATE_PREFER_BUSY_POLL, &napi->state);
__napi_schedule_irqoff(napi);
+ }
return HRTIMER_NORESTART;
}
@@ -6705,6 +6732,7 @@ void napi_disable(struct napi_struct *n)
hrtimer_cancel(&n->timer);
+ clear_bit(NAPI_STATE_PREFER_BUSY_POLL, &n->state);
clear_bit(NAPI_STATE_DISABLE, &n->state);
}
EXPORT_SYMBOL(napi_disable);
@@ -6777,6 +6805,19 @@ static int napi_poll(struct napi_struct *n, struct list_head *repoll)
goto out_unlock;
}
+ /* The NAPI context has more processing work, but busy-polling
+ * is preferred. Exit early.
+ */
+ if (napi_prefer_busy_poll(n)) {
+ if (napi_complete_done(n, work)) {
+ /* If timeout is not set, we need to make sure
+ * that the NAPI is re-scheduled.
+ */
+ napi_schedule(n);
+ }
+ goto out_unlock;
+ }
+
if (n->gro_bitmask) {
/* flush too old packets
* If HZ < 1000, flush all packets.
@@ -6915,7 +6956,7 @@ bool netdev_has_upper_dev(struct net_device *dev,
EXPORT_SYMBOL(netdev_has_upper_dev);
/**
- * netdev_has_upper_dev_all - Check if device is linked to an upper device
+ * netdev_has_upper_dev_all_rcu - Check if device is linked to an upper device
* @dev: device
* @upper_dev: upper device to check
*
@@ -8153,7 +8194,7 @@ EXPORT_SYMBOL(netdev_lower_dev_get_private);
/**
- * netdev_lower_change - Dispatch event about lower device state change
+ * netdev_lower_state_changed - Dispatch event about lower device state change
* @lower_dev: device
* @lower_state_info: state to dispatch
*
@@ -8898,7 +8939,7 @@ static bpf_op_t dev_xdp_bpf_op(struct net_device *dev, enum bpf_xdp_mode mode)
return dev->netdev_ops->ndo_bpf;
default:
return NULL;
- };
+ }
}
static struct bpf_xdp_link *dev_xdp_link(struct net_device *dev,
@@ -9602,6 +9643,11 @@ static netdev_features_t netdev_fix_features(struct net_device *dev,
}
}
+ if ((features & NETIF_F_HW_TLS_TX) && !(features & NETIF_F_HW_CSUM)) {
+ netdev_dbg(dev, "Dropping TLS TX HW offload feature since no CSUM feature.\n");
+ features &= ~NETIF_F_HW_TLS_TX;
+ }
+
return features;
}
@@ -9777,7 +9823,7 @@ static int netif_alloc_rx_queues(struct net_device *dev)
rx[i].dev = dev;
/* XDP RX-queue setup */
- err = xdp_rxq_info_reg(&rx[i].xdp_rxq, dev, i);
+ err = xdp_rxq_info_reg(&rx[i].xdp_rxq, dev, i, 0);
if (err < 0)
goto err_rxq_info;
}
@@ -10380,6 +10426,21 @@ void dev_fetch_sw_netstats(struct rtnl_link_stats64 *s,
}
EXPORT_SYMBOL_GPL(dev_fetch_sw_netstats);
+/**
+ * dev_get_tstats64 - ndo_get_stats64 implementation
+ * @dev: device to get statistics from
+ * @s: place to store stats
+ *
+ * Populate @s from dev->stats and dev->tstats. Can be used as
+ * ndo_get_stats64() callback.
+ */
+void dev_get_tstats64(struct net_device *dev, struct rtnl_link_stats64 *s)
+{
+ netdev_stats_to_stats64(s, &dev->stats);
+ dev_fetch_sw_netstats(s, dev->tstats);
+}
+EXPORT_SYMBOL_GPL(dev_get_tstats64);
+
struct netdev_queue *dev_ingress_queue_create(struct net_device *dev)
{
struct netdev_queue *queue = dev_ingress_queue(dev);
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-12 08:27:28 +0300