diff options
| author | Ingo Molnar <mingo@kernel.org> | 2014-05-07 07:15:46 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-05-07 07:15:46 -0400 |
| commit | 2fe5de9ce7d57498abc14b375cad2fcf8c3ee6cc (patch) | |
| tree | 9478e8cf470c1d5bdb2d89b57a7e35919ab95e72 /include/linux/netpoll.h | |
| parent | 08f8aeb55d7727d644dbbbbfb798fe937d47751d (diff) | |
| parent | 2b4cfe64dee0d84506b951d81bf55d9891744d25 (diff) | |
Merge branch 'sched/urgent' into sched/core, to avoid conflicts
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/netpoll.h')
| -rw-r--r-- | include/linux/netpoll.h | 71 |
1 files changed, 5 insertions, 66 deletions
diff --git a/include/linux/netpoll.h b/include/linux/netpoll.h index fbfdb9d8d3a7..b25ee9ffdbe6 100644 --- a/include/linux/netpoll.h +++ b/include/linux/netpoll.h | |||
| @@ -24,27 +24,20 @@ struct netpoll { | |||
| 24 | struct net_device *dev; | 24 | struct net_device *dev; |
| 25 | char dev_name[IFNAMSIZ]; | 25 | char dev_name[IFNAMSIZ]; |
| 26 | const char *name; | 26 | const char *name; |
| 27 | void (*rx_skb_hook)(struct netpoll *np, int source, struct sk_buff *skb, | ||
| 28 | int offset, int len); | ||
| 29 | 27 | ||
| 30 | union inet_addr local_ip, remote_ip; | 28 | union inet_addr local_ip, remote_ip; |
| 31 | bool ipv6; | 29 | bool ipv6; |
| 32 | u16 local_port, remote_port; | 30 | u16 local_port, remote_port; |
| 33 | u8 remote_mac[ETH_ALEN]; | 31 | u8 remote_mac[ETH_ALEN]; |
| 34 | 32 | ||
| 35 | struct list_head rx; /* rx_np list element */ | ||
| 36 | struct work_struct cleanup_work; | 33 | struct work_struct cleanup_work; |
| 37 | }; | 34 | }; |
| 38 | 35 | ||
| 39 | struct netpoll_info { | 36 | struct netpoll_info { |
| 40 | atomic_t refcnt; | 37 | atomic_t refcnt; |
| 41 | 38 | ||
| 42 | unsigned long rx_flags; | ||
| 43 | spinlock_t rx_lock; | ||
| 44 | struct semaphore dev_lock; | 39 | struct semaphore dev_lock; |
| 45 | struct list_head rx_np; /* netpolls that registered an rx_skb_hook */ | ||
| 46 | 40 | ||
| 47 | struct sk_buff_head neigh_tx; /* list of neigh requests to reply to */ | ||
| 48 | struct sk_buff_head txq; | 41 | struct sk_buff_head txq; |
| 49 | 42 | ||
| 50 | struct delayed_work tx_work; | 43 | struct delayed_work tx_work; |
| @@ -54,24 +47,21 @@ struct netpoll_info { | |||
| 54 | }; | 47 | }; |
| 55 | 48 | ||
| 56 | #ifdef CONFIG_NETPOLL | 49 | #ifdef CONFIG_NETPOLL |
| 57 | extern void netpoll_rx_disable(struct net_device *dev); | 50 | extern void netpoll_poll_disable(struct net_device *dev); |
| 58 | extern void netpoll_rx_enable(struct net_device *dev); | 51 | extern void netpoll_poll_enable(struct net_device *dev); |
| 59 | #else | 52 | #else |
| 60 | static inline void netpoll_rx_disable(struct net_device *dev) { return; } | 53 | static inline void netpoll_poll_disable(struct net_device *dev) { return; } |
| 61 | static inline void netpoll_rx_enable(struct net_device *dev) { return; } | 54 | static inline void netpoll_poll_enable(struct net_device *dev) { return; } |
| 62 | #endif | 55 | #endif |
| 63 | 56 | ||
| 64 | void netpoll_send_udp(struct netpoll *np, const char *msg, int len); | 57 | void netpoll_send_udp(struct netpoll *np, const char *msg, int len); |
| 65 | void netpoll_print_options(struct netpoll *np); | 58 | void netpoll_print_options(struct netpoll *np); |
| 66 | int netpoll_parse_options(struct netpoll *np, char *opt); | 59 | int netpoll_parse_options(struct netpoll *np, char *opt); |
| 67 | int __netpoll_setup(struct netpoll *np, struct net_device *ndev, gfp_t gfp); | 60 | int __netpoll_setup(struct netpoll *np, struct net_device *ndev); |
| 68 | int netpoll_setup(struct netpoll *np); | 61 | int netpoll_setup(struct netpoll *np); |
| 69 | int netpoll_trap(void); | ||
| 70 | void netpoll_set_trap(int trap); | ||
| 71 | void __netpoll_cleanup(struct netpoll *np); | 62 | void __netpoll_cleanup(struct netpoll *np); |
| 72 | void __netpoll_free_async(struct netpoll *np); | 63 | void __netpoll_free_async(struct netpoll *np); |
| 73 | void netpoll_cleanup(struct netpoll *np); | 64 | void netpoll_cleanup(struct netpoll *np); |
| 74 | int __netpoll_rx(struct sk_buff *skb, struct netpoll_info *npinfo); | ||
| 75 | void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb, | 65 | void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb, |
| 76 | struct net_device *dev); | 66 | struct net_device *dev); |
| 77 | static inline void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb) | 67 | static inline void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb) |
| @@ -82,46 +72,7 @@ static inline void netpoll_send_skb(struct netpoll *np, struct sk_buff *skb) | |||
| 82 | local_irq_restore(flags); | 72 | local_irq_restore(flags); |
| 83 | } | 73 | } |
| 84 | 74 | ||
| 85 | |||
| 86 | |||
| 87 | #ifdef CONFIG_NETPOLL | 75 | #ifdef CONFIG_NETPOLL |
| 88 | static inline bool netpoll_rx_on(struct sk_buff *skb) | ||
| 89 | { | ||
| 90 | struct netpoll_info *npinfo = rcu_dereference_bh(skb->dev->npinfo); | ||
| 91 | |||
| 92 | return npinfo && (!list_empty(&npinfo->rx_np) || npinfo->rx_flags); | ||
| 93 | } | ||
| 94 | |||
| 95 | static inline bool netpoll_rx(struct sk_buff *skb) | ||
| 96 | { | ||
| 97 | struct netpoll_info *npinfo; | ||
| 98 | unsigned long flags; | ||
| 99 | bool ret = false; | ||
| 100 | |||
| 101 | local_irq_save(flags); | ||
| 102 | |||
| 103 | if (!netpoll_rx_on(skb)) | ||
| 104 | goto out; | ||
| 105 | |||
| 106 | npinfo = rcu_dereference_bh(skb->dev->npinfo); | ||
| 107 | spin_lock(&npinfo->rx_lock); | ||
| 108 | /* check rx_flags again with the lock held */ | ||
| 109 | if (npinfo->rx_flags && __netpoll_rx(skb, npinfo)) | ||
| 110 | ret = true; | ||
| 111 | spin_unlock(&npinfo->rx_lock); | ||
| 112 | |||
| 113 | out: | ||
| 114 | local_irq_restore(flags); | ||
| 115 | return ret; | ||
| 116 | } | ||
| 117 | |||
| 118 | static inline int netpoll_receive_skb(struct sk_buff *skb) | ||
| 119 | { | ||
| 120 | if (!list_empty(&skb->dev->napi_list)) | ||
| 121 | return netpoll_rx(skb); | ||
| 122 | return 0; | ||
| 123 | } | ||
| 124 | |||
| 125 | static inline void *netpoll_poll_lock(struct napi_struct *napi) | 76 | static inline void *netpoll_poll_lock(struct napi_struct *napi) |
| 126 | { | 77 | { |
| 127 | struct net_device *dev = napi->dev; | 78 | struct net_device *dev = napi->dev; |
| @@ -150,18 +101,6 @@ static inline bool netpoll_tx_running(struct net_device *dev) | |||
| 150 | } | 101 | } |
| 151 | 102 | ||
| 152 | #else | 103 | #else |
| 153 | static inline bool netpoll_rx(struct sk_buff *skb) | ||
| 154 | { | ||
| 155 | return false; | ||
| 156 | } | ||
| 157 | static inline bool netpoll_rx_on(struct sk_buff *skb) | ||
| 158 | { | ||
| 159 | return false; | ||
| 160 | } | ||
| 161 | static inline int netpoll_receive_skb(struct sk_buff *skb) | ||
| 162 | { | ||
| 163 | return 0; | ||
| 164 | } | ||
| 165 | static inline void *netpoll_poll_lock(struct napi_struct *napi) | 104 | static inline void *netpoll_poll_lock(struct napi_struct *napi) |
| 166 | { | 105 | { |
| 167 | return NULL; | 106 | return NULL; |
