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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | #ifndef _LINUX_INETDEVICE_H |
| 2 | #define _LINUX_INETDEVICE_H |
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| 3 | |||
| 4 | #ifdef __KERNEL__ |
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| 5 | |||
| 6 | struct ipv4_devconf |
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| 7 | { |
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| 8 | int accept_redirects; |
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| 9 | int send_redirects; |
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| 10 | int secure_redirects; |
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| 11 | int shared_media; |
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| 12 | int accept_source_route; |
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| 13 | int rp_filter; |
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| 14 | int proxy_arp; |
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| 15 | int bootp_relay; |
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| 16 | int log_martians; |
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| 17 | int forwarding; |
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| 18 | int mc_forwarding; |
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| 19 | int tag; |
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| 20 | int arp_filter; |
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| 21 | int medium_id; |
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| 22 | int no_xfrm; |
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| 23 | int no_policy; |
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| 24 | void *sysctl; |
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| 25 | }; |
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| 26 | |||
| 27 | extern struct ipv4_devconf ipv4_devconf; |
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| 28 | |||
| 29 | struct in_device |
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| 30 | { |
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| 31 | struct net_device *dev; |
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| 32 | atomic_t refcnt; |
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| 33 | rwlock_t lock; |
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| 34 | int dead; |
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| 35 | struct in_ifaddr *ifa_list; /* IP ifaddr chain */ |
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| 36 | struct ip_mc_list *mc_list; /* IP multicast filter chain */ |
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| 37 | rwlock_t mc_lock; /* for mc_tomb */ |
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| 38 | struct ip_mc_list *mc_tomb; |
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| 39 | unsigned long mr_v1_seen; |
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| 40 | unsigned long mr_v2_seen; |
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| 41 | unsigned long mr_maxdelay; |
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| 42 | unsigned char mr_qrv; |
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| 43 | unsigned char mr_gq_running; |
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| 44 | unsigned char mr_ifc_count; |
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| 45 | struct timer_list mr_gq_timer; /* general query timer */ |
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| 46 | struct timer_list mr_ifc_timer; /* interface change timer */ |
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| 47 | |||
| 48 | struct neigh_parms *arp_parms; |
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| 49 | struct ipv4_devconf cnf; |
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| 50 | }; |
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| 51 | |||
| 52 | #define IN_DEV_FORWARD(in_dev) ((in_dev)->cnf.forwarding) |
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| 53 | #define IN_DEV_MFORWARD(in_dev) (ipv4_devconf.mc_forwarding && (in_dev)->cnf.mc_forwarding) |
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| 54 | #define IN_DEV_RPFILTER(in_dev) (ipv4_devconf.rp_filter && (in_dev)->cnf.rp_filter) |
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| 55 | #define IN_DEV_SOURCE_ROUTE(in_dev) (ipv4_devconf.accept_source_route && (in_dev)->cnf.accept_source_route) |
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| 56 | #define IN_DEV_BOOTP_RELAY(in_dev) (ipv4_devconf.bootp_relay && (in_dev)->cnf.bootp_relay) |
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| 57 | |||
| 58 | #define IN_DEV_LOG_MARTIANS(in_dev) (ipv4_devconf.log_martians || (in_dev)->cnf.log_martians) |
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| 59 | #define IN_DEV_PROXY_ARP(in_dev) (ipv4_devconf.proxy_arp || (in_dev)->cnf.proxy_arp) |
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| 60 | #define IN_DEV_SHARED_MEDIA(in_dev) (ipv4_devconf.shared_media || (in_dev)->cnf.shared_media) |
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| 61 | #define IN_DEV_TX_REDIRECTS(in_dev) (ipv4_devconf.send_redirects || (in_dev)->cnf.send_redirects) |
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| 62 | #define IN_DEV_SEC_REDIRECTS(in_dev) (ipv4_devconf.secure_redirects || (in_dev)->cnf.secure_redirects) |
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| 63 | #define IN_DEV_IDTAG(in_dev) ((in_dev)->cnf.tag) |
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| 64 | #define IN_DEV_MEDIUM_ID(in_dev) ((in_dev)->cnf.medium_id) |
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| 65 | |||
| 66 | #define IN_DEV_RX_REDIRECTS(in_dev) \ |
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| 67 | ((IN_DEV_FORWARD(in_dev) && \ |
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| 68 | (ipv4_devconf.accept_redirects && (in_dev)->cnf.accept_redirects)) \ |
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| 69 | || (!IN_DEV_FORWARD(in_dev) && \ |
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| 70 | (ipv4_devconf.accept_redirects || (in_dev)->cnf.accept_redirects))) |
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| 71 | |||
| 72 | #define IN_DEV_ARPFILTER(in_dev) (ipv4_devconf.arp_filter || (in_dev)->cnf.arp_filter) |
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| 73 | |||
| 74 | struct in_ifaddr |
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| 75 | { |
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| 76 | struct in_ifaddr *ifa_next; |
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| 77 | struct in_device *ifa_dev; |
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| 78 | u32 ifa_local; |
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| 79 | u32 ifa_address; |
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| 80 | u32 ifa_mask; |
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| 81 | u32 ifa_broadcast; |
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| 82 | u32 ifa_anycast; |
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| 83 | unsigned char ifa_scope; |
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| 84 | unsigned char ifa_flags; |
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| 85 | unsigned char ifa_prefixlen; |
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| 86 | char ifa_label[IFNAMSIZ]; |
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| 87 | }; |
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| 88 | |||
| 89 | extern int register_inetaddr_notifier(struct notifier_block *nb); |
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| 90 | extern int unregister_inetaddr_notifier(struct notifier_block *nb); |
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| 91 | |||
| 92 | extern struct net_device *ip_dev_find(u32 addr); |
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| 93 | extern int inet_addr_onlink(struct in_device *in_dev, u32 a, u32 b); |
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| 94 | extern int devinet_ioctl(unsigned int cmd, void *); |
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| 95 | extern void devinet_init(void); |
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| 96 | extern struct in_device *inetdev_init(struct net_device *dev); |
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| 97 | extern struct in_device *inetdev_by_index(int); |
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| 98 | extern u32 inet_select_addr(const struct net_device *dev, u32 dst, int scope); |
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| 99 | extern struct in_ifaddr *inet_ifa_byprefix(struct in_device *in_dev, u32 prefix, u32 mask); |
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| 100 | extern void inet_forward_change(void); |
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| 101 | |||
| 102 | static __inline__ int inet_ifa_match(u32 addr, struct in_ifaddr *ifa) |
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| 103 | { |
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| 104 | return !((addr^ifa->ifa_address)&ifa->ifa_mask); |
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| 105 | } |
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| 106 | |||
| 107 | /* |
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| 108 | * Check if a mask is acceptable. |
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| 109 | */ |
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| 110 | |||
| 111 | static __inline__ int bad_mask(u32 mask, u32 addr) |
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| 112 | { |
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| 113 | if (addr & (mask = ~mask)) |
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| 114 | return 1; |
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| 115 | mask = ntohl(mask); |
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| 116 | if (mask & (mask+1)) |
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| 117 | return 1; |
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| 118 | return 0; |
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| 119 | } |
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| 120 | |||
| 121 | #define for_primary_ifa(in_dev) { struct in_ifaddr *ifa; \ |
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| 122 | for (ifa = (in_dev)->ifa_list; ifa && !(ifa->ifa_flags&IFA_F_SECONDARY); ifa = ifa->ifa_next) |
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| 123 | |||
| 124 | #define for_ifa(in_dev) { struct in_ifaddr *ifa; \ |
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| 125 | for (ifa = (in_dev)->ifa_list; ifa; ifa = ifa->ifa_next) |
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| 126 | |||
| 127 | |||
| 128 | #define endfor_ifa(in_dev) } |
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| 129 | |||
| 130 | extern rwlock_t inetdev_lock; |
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| 131 | |||
| 132 | |||
| 133 | static __inline__ struct in_device * |
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| 134 | in_dev_get(const struct net_device *dev) |
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| 135 | { |
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| 136 | struct in_device *in_dev; |
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| 137 | |||
| 138 | read_lock(&inetdev_lock); |
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| 139 | in_dev = dev->ip_ptr; |
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| 140 | if (in_dev) |
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| 141 | atomic_inc(&in_dev->refcnt); |
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| 142 | read_unlock(&inetdev_lock); |
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| 143 | return in_dev; |
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| 144 | } |
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| 145 | |||
| 146 | static __inline__ struct in_device * |
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| 147 | __in_dev_get(const struct net_device *dev) |
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| 148 | { |
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| 149 | return (struct in_device*)dev->ip_ptr; |
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| 150 | } |
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| 151 | |||
| 152 | extern void in_dev_finish_destroy(struct in_device *idev); |
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| 153 | |||
| 154 | static __inline__ void |
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| 155 | in_dev_put(struct in_device *idev) |
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| 156 | { |
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| 157 | if (atomic_dec_and_test(&idev->refcnt)) |
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| 158 | in_dev_finish_destroy(idev); |
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| 159 | } |
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| 160 | |||
| 161 | #define __in_dev_put(idev) atomic_dec(&(idev)->refcnt) |
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| 162 | #define in_dev_hold(idev) atomic_inc(&(idev)->refcnt) |
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| 163 | |||
| 164 | #endif /* __KERNEL__ */ |
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| 165 | |||
| 166 | static __inline__ __u32 inet_make_mask(int logmask) |
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| 167 | { |
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| 168 | if (logmask) |
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| 169 | return htonl(~((1<<(32-logmask))-1)); |
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| 170 | return 0; |
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| 171 | } |
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| 172 | |||
| 173 | static __inline__ int inet_mask_len(__u32 mask) |
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| 174 | { |
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| 175 | if (!(mask = ntohl(mask))) |
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| 176 | return 0; |
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| 177 | return 32 - ffz(~mask); |
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| 178 | } |
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| 179 | |||
| 180 | |||
| 181 | #endif /* _LINUX_INETDEVICE_H */ |