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 { | |||
2074 | 2074 | ||
2075 | /* SMP locking strategy: | 2075 | /* SMP locking strategy: |
2076 | * | 2076 | * |
2077 | * lock: Held during all operations except TX packet | 2077 | * lock: Held during reset, PHY access, timer, and when |
2078 | * processing. | 2078 | * updating tg3_flags and tg3_flags2. |
2079 | * | 2079 | * |
2080 | * tx_lock: Held during tg3_start_xmit and tg3_tx | 2080 | * tx_lock: Held during tg3_start_xmit and tg3_tx only |
2081 | * when calling netif_[start|stop]_queue. | ||
2082 | * tg3_start_xmit is protected by netif_tx_lock. | ||
2081 | * | 2083 | * |
2082 | * Both of these locks are to be held with BH safety. | 2084 | * Both of these locks are to be held with BH safety. |
2085 | * | ||
2086 | * Because the IRQ handler, tg3_poll, and tg3_start_xmit | ||
2087 | * are running lockless, it is necessary to completely | ||
2088 | * quiesce the chip with tg3_netif_stop and tg3_full_lock | ||
2089 | * before reconfiguring the device. | ||
2090 | * | ||
2091 | * indirect_lock: Held when accessing registers indirectly | ||
2092 | * with IRQ disabling. | ||
2083 | */ | 2093 | */ |
2084 | spinlock_t lock; | 2094 | spinlock_t lock; |
2085 | spinlock_t indirect_lock; | 2095 | spinlock_t indirect_lock; |