diff options
Diffstat (limited to 'drivers/net/tg3.h')
| -rw-r--r-- | drivers/net/tg3.h | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h index 35669e18065..8209da5dd15 100644 --- a/drivers/net/tg3.h +++ b/drivers/net/tg3.h @@ -2074,12 +2074,22 @@ struct tg3 { /* SMP locking strategy: * - * lock: Held during all operations except TX packet - * processing. + * lock: Held during reset, PHY access, timer, and when + * updating tg3_flags and tg3_flags2. * - * tx_lock: Held during tg3_start_xmit and tg3_tx + * tx_lock: Held during tg3_start_xmit and tg3_tx only + * when calling netif_[start|stop]_queue. + * tg3_start_xmit is protected by netif_tx_lock. * * Both of these locks are to be held with BH safety. + * + * Because the IRQ handler, tg3_poll, and tg3_start_xmit + * are running lockless, it is necessary to completely + * quiesce the chip with tg3_netif_stop and tg3_full_lock + * before reconfiguring the device. + * + * indirect_lock: Held when accessing registers indirectly + * with IRQ disabling. */ spinlock_t lock; spinlock_t indirect_lock; |