libsocketcan
v0.0.10+git20140721
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Functions | |
static int | send_mod_request (int fd, struct nlmsghdr *n) |
send_mod_request - send a linkinfo modification request More... | |
static int | send_dump_request (int fd, int family, int type) |
send_dump_request - send a dump linkinfo request More... | |
static int | open_nl_sock () |
open_nl_sock - open a netlink socket More... | |
static int | do_get_nl_link (int fd, __u8 acquire, const char *name, void *res) |
do_get_nl_link - get linkinfo More... | |
static int | get_link (const char *name, __u8 acquire, void *res) |
get_link - get linkinfo More... | |
static int | do_set_nl_link (int fd, __u8 if_state, const char *name, struct req_info *req_info) |
do_set_nl_link - setup linkinfo More... | |
static int | set_link (const char *name, __u8 if_state, struct req_info *req_info) |
set_link - open a netlink socket and setup linkinfo More... | |
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do_get_nl_link - get linkinfo
fd | socket file descriptor to a priorly opened netlink socket |
acquire | which parameter we want to get |
name | name of the can device. This is the netdev name, as ifconfig -a shows in your system. usually it contains prefix "can" and the numer of the can line. e.g. "can0" |
res | pointer to store the result |
This callback send a dump request into the netlink layer, collect the packet containing the linkinfo and fill the pointer res points to depending on the acquire mode set in param acquire.
References send_dump_request().
Referenced by get_link().
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do_set_nl_link - setup linkinfo
fd | socket file descriptor to a priorly opened netlink socket |
if_state | state of the interface we want to put the device into. this parameter is only set if you want to use the callback to driver up/down the device |
name | name of the can device. This is the netdev name, as ifconfig -a shows in your system. usually it contains prefix "can" and the numer of the can line. e.g. "can0" |
req_info | request parameters |
This callback can do two different tasks:
References send_mod_request().
Referenced by set_link().
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get_link - get linkinfo
name | name of the can device. This is the netdev name, as ifconfig -a shows in your system. usually it contains prefix "can" and the numer of the can line. e.g. "can0" |
acquire | which parameter we want to get |
res | pointer to store the result |
This is a wrapper for do_get_nl_link
References do_get_nl_link(), and open_nl_sock().
Referenced by can_get_berr_counter(), can_get_bittiming(), can_get_bittiming_const(), can_get_clock(), can_get_ctrlmode(), can_get_device_stats(), can_get_restart_ms(), and can_get_state().
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open_nl_sock - open a netlink socket
opens a netlink socket and returns the socket descriptor
Referenced by get_link(), and set_link().
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send_dump_request - send a dump linkinfo request
fd | decriptor to a priorly opened netlink socket |
family | rt_gen message family |
type | netlink message header type |
Referenced by do_get_nl_link().
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send_mod_request - send a linkinfo modification request
fd | decriptor to a priorly opened netlink socket |
n | netlink message containing the request |
sends a request to setup the the linkinfo to netlink layer and awaits the status.
Referenced by do_set_nl_link().
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set_link - open a netlink socket and setup linkinfo
name | name of the can device. This is the netdev name, as ifconfig -a shows in your system. usually it contains prefix "can" and the numer of the can line. e.g. "can0" |
if_state | state of the interface we want to put the device into. this parameter is only set if you want to use the callback to driver up/down the device |
req_info | request parameters |
This is a wrapper for do_set_nl_link. It opens a netlink socket and sends down the requests.
References do_set_nl_link(), and open_nl_sock().
Referenced by can_do_restart(), can_do_start(), can_do_stop(), can_set_bittiming(), can_set_ctrlmode(), and can_set_restart_ms().