mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-20 14:13:16 +00:00
2c35899d81
All modification made by update_kernel.sh in a fresh clone without
existing toolchains.
Build system: x86_64
Build-tested: ipq806x/R7800, bcm27xx/bcm2711
Run-tested: ipq806x/R7800
Compile-tested [*]: ath79/{tiny,generic}, ipq40xx, octeon,
ramips/mt7621, realtek, x86/64
Run-tested [*]: ath79/generic, ipq40xx, octeon, ramips/mt7621
No dmesg regressions, everything functional
Signed-off-by: John Audia <graysky@archlinux.us>
Tested-by: Stijn Segers <foss@volatilesystems.org> [*]
159 lines
4.2 KiB
Diff
159 lines
4.2 KiB
Diff
From e7e0b3b89da97e3186fbe3774a1ca9b77402d893 Mon Sep 17 00:00:00 2001
|
|
From: Yangbo Lu <yangbo.lu@nxp.com>
|
|
Date: Wed, 27 Nov 2019 15:27:57 +0800
|
|
Subject: [PATCH] net: mscc: ocelot: use skb queue instead of skbs list
|
|
|
|
Convert to use skb queue instead of the list of skbs.
|
|
The skb queue could provide protection with lock.
|
|
|
|
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
|
|
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
---
|
|
drivers/net/ethernet/mscc/ocelot.c | 54 +++++++++++++-------------------------
|
|
include/soc/mscc/ocelot.h | 9 +------
|
|
2 files changed, 19 insertions(+), 44 deletions(-)
|
|
|
|
--- a/drivers/net/ethernet/mscc/ocelot.c
|
|
+++ b/drivers/net/ethernet/mscc/ocelot.c
|
|
@@ -583,18 +583,10 @@ int ocelot_port_add_txtstamp_skb(struct
|
|
|
|
if (ocelot->ptp && shinfo->tx_flags & SKBTX_HW_TSTAMP &&
|
|
ocelot_port->ptp_cmd == IFH_REW_OP_TWO_STEP_PTP) {
|
|
- struct ocelot_skb *oskb =
|
|
- kzalloc(sizeof(struct ocelot_skb), GFP_ATOMIC);
|
|
-
|
|
- if (unlikely(!oskb))
|
|
- return -ENOMEM;
|
|
-
|
|
shinfo->tx_flags |= SKBTX_IN_PROGRESS;
|
|
-
|
|
- oskb->skb = skb;
|
|
- oskb->id = ocelot_port->ts_id % 4;
|
|
-
|
|
- list_add_tail(&oskb->head, &ocelot_port->skbs);
|
|
+ /* Store timestamp ID in cb[0] of sk_buff */
|
|
+ skb->cb[0] = ocelot_port->ts_id % 4;
|
|
+ skb_queue_tail(&ocelot_port->tx_skbs, skb);
|
|
return 0;
|
|
}
|
|
return -ENODATA;
|
|
@@ -704,12 +696,11 @@ void ocelot_get_txtstamp(struct ocelot *
|
|
int budget = OCELOT_PTP_QUEUE_SZ;
|
|
|
|
while (budget--) {
|
|
+ struct sk_buff *skb, *skb_tmp, *skb_match = NULL;
|
|
struct skb_shared_hwtstamps shhwtstamps;
|
|
- struct list_head *pos, *tmp;
|
|
- struct sk_buff *skb = NULL;
|
|
- struct ocelot_skb *entry;
|
|
struct ocelot_port *port;
|
|
struct timespec64 ts;
|
|
+ unsigned long flags;
|
|
u32 val, id, txport;
|
|
|
|
val = ocelot_read(ocelot, SYS_PTP_STATUS);
|
|
@@ -727,22 +718,22 @@ void ocelot_get_txtstamp(struct ocelot *
|
|
/* Retrieve its associated skb */
|
|
port = ocelot->ports[txport];
|
|
|
|
- list_for_each_safe(pos, tmp, &port->skbs) {
|
|
- entry = list_entry(pos, struct ocelot_skb, head);
|
|
- if (entry->id != id)
|
|
- continue;
|
|
+ spin_lock_irqsave(&port->tx_skbs.lock, flags);
|
|
|
|
- skb = entry->skb;
|
|
-
|
|
- list_del(pos);
|
|
- kfree(entry);
|
|
+ skb_queue_walk_safe(&port->tx_skbs, skb, skb_tmp) {
|
|
+ if (skb->cb[0] != id)
|
|
+ continue;
|
|
+ __skb_unlink(skb, &port->tx_skbs);
|
|
+ skb_match = skb;
|
|
break;
|
|
}
|
|
|
|
+ spin_unlock_irqrestore(&port->tx_skbs.lock, flags);
|
|
+
|
|
/* Next ts */
|
|
ocelot_write(ocelot, SYS_PTP_NXT_PTP_NXT, SYS_PTP_NXT);
|
|
|
|
- if (unlikely(!skb))
|
|
+ if (unlikely(!skb_match))
|
|
continue;
|
|
|
|
/* Get the h/w timestamp */
|
|
@@ -751,9 +742,9 @@ void ocelot_get_txtstamp(struct ocelot *
|
|
/* Set the timestamp into the skb */
|
|
memset(&shhwtstamps, 0, sizeof(shhwtstamps));
|
|
shhwtstamps.hwtstamp = ktime_set(ts.tv_sec, ts.tv_nsec);
|
|
- skb_tstamp_tx(skb, &shhwtstamps);
|
|
+ skb_tstamp_tx(skb_match, &shhwtstamps);
|
|
|
|
- dev_kfree_skb_any(skb);
|
|
+ dev_kfree_skb_any(skb_match);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(ocelot_get_txtstamp);
|
|
@@ -2208,7 +2199,7 @@ void ocelot_init_port(struct ocelot *oce
|
|
{
|
|
struct ocelot_port *ocelot_port = ocelot->ports[port];
|
|
|
|
- INIT_LIST_HEAD(&ocelot_port->skbs);
|
|
+ skb_queue_head_init(&ocelot_port->tx_skbs);
|
|
|
|
/* Basic L2 initialization */
|
|
|
|
@@ -2493,9 +2484,7 @@ EXPORT_SYMBOL(ocelot_init);
|
|
|
|
void ocelot_deinit(struct ocelot *ocelot)
|
|
{
|
|
- struct list_head *pos, *tmp;
|
|
struct ocelot_port *port;
|
|
- struct ocelot_skb *entry;
|
|
int i;
|
|
|
|
cancel_delayed_work(&ocelot->stats_work);
|
|
@@ -2507,14 +2496,7 @@ void ocelot_deinit(struct ocelot *ocelot
|
|
|
|
for (i = 0; i < ocelot->num_phys_ports; i++) {
|
|
port = ocelot->ports[i];
|
|
-
|
|
- list_for_each_safe(pos, tmp, &port->skbs) {
|
|
- entry = list_entry(pos, struct ocelot_skb, head);
|
|
-
|
|
- list_del(pos);
|
|
- dev_kfree_skb_any(entry->skb);
|
|
- kfree(entry);
|
|
- }
|
|
+ skb_queue_purge(&port->tx_skbs);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(ocelot_deinit);
|
|
--- a/include/soc/mscc/ocelot.h
|
|
+++ b/include/soc/mscc/ocelot.h
|
|
@@ -406,13 +406,6 @@ struct ocelot_ops {
|
|
int (*reset)(struct ocelot *ocelot);
|
|
};
|
|
|
|
-struct ocelot_skb {
|
|
- struct list_head head;
|
|
- struct sk_buff *skb;
|
|
- u8 id;
|
|
-};
|
|
-
|
|
-
|
|
struct ocelot_port {
|
|
struct ocelot *ocelot;
|
|
|
|
@@ -425,7 +418,7 @@ struct ocelot_port {
|
|
u16 vid;
|
|
|
|
u8 ptp_cmd;
|
|
- struct list_head skbs;
|
|
+ struct sk_buff_head tx_skbs;
|
|
u8 ts_id;
|
|
};
|
|
|