Functions | |
int | nfct_query (struct nfct_handle *h, const enum nf_conntrack_query qt, const void *data) |
nfct_query - send a query to ctnetlink and handle the reply More... | |
int | nfct_send (struct nfct_handle *h, const enum nf_conntrack_query qt, const void *data) |
nfct_send - send a query to ctnetlink More... | |
int | nfct_catch (struct nfct_handle *h) |
nfct_catch - catch events More... | |
int | nfexp_query (struct nfct_handle *h, const enum nf_conntrack_query qt, const void *data) |
nfexp_query - send a query to ctnetlink More... | |
int | nfexp_send (struct nfct_handle *h, const enum nf_conntrack_query qt, const void *data) |
nfexp_send - send a query to ctnetlink More... | |
int | nfexp_catch (struct nfct_handle *h) |
nfexp_catch - catch events More... | |
int nfct_catch | ( | struct nfct_handle * | h | ) |
nfct_catch - catch events
h | library handler |
This function receives the event from the kernel and it invokes the callback that was registered to this handle.
On error, -1 is returned and errno is set appropiately. On success, a value greater or equal to 0 is returned indicating the callback verdict: NFCT_CB_STOP, NFCT_CB_CONTINUE or NFCT_CB_STOLEN.
Beware that this function also handles expectation events, in case they are received through this handle.
References nfnl_catch(), nfct_handle::nfnlh, and NULL.
Referenced by main().
int nfct_query | ( | struct nfct_handle * | h, |
const enum nf_conntrack_query | qt, | ||
const void * | data | ||
) |
nfct_query - send a query to ctnetlink and handle the reply
h | library handler |
qt | query type |
data | data required to send the query |
On error, -1 is returned and errno is explicitely set. On success, 0 is returned.
References nfnl_query(), nfct_handle::nfnlh, nfct_handle::nfnlssh_ct, NULL, and size.
Referenced by main(), nl_create_conntrack(), nl_destroy_conntrack(), nl_dump_conntrack_table(), nl_flush_conntrack_table_selective(), nl_get_conntrack(), and nl_update_conntrack().
int nfct_send | ( | struct nfct_handle * | h, |
const enum nf_conntrack_query | qt, | ||
const void * | data | ||
) |
nfct_send - send a query to ctnetlink
h | library handler |
qt | query type |
data | data required to send the query |
Like nfct_query but we do not wait for the reply from ctnetlink. You can use nfct_send() and nfct_catch() to emulate nfct_query(). This is particularly useful when the socket is non-blocking.
On error, -1 is returned and errno is explicitely set. On success, 0 is returned.
References nfnl_send(), nfct_handle::nfnlh, nfct_handle::nfnlssh_ct, NULL, and size.
Referenced by nl_send_resync().
int nfexp_catch | ( | struct nfct_handle * | h | ) |
nfexp_catch - catch events
h | library handler |
This function receives the event from the kernel and it invokes the callback that was registered to this handle.
On error, -1 is returned and errno is set appropiately. On success, a value greater or equal to 0 is returned indicating the callback verdict: NFCT_CB_STOP, NFCT_CB_CONTINUE or NFCT_CB_STOLEN.
Beware that this function is equivalent to nfct_catch(), so it handles both conntrack and expectation events.
References nfnl_catch(), nfct_handle::nfnlh, and NULL.
Referenced by main().
int nfexp_query | ( | struct nfct_handle * | h, |
const enum nf_conntrack_query | qt, | ||
const void * | data | ||
) |
nfexp_query - send a query to ctnetlink
h | library handler |
qt | query type |
data | data required to send the query |
On error, -1 is returned and errno is explicitely set. On success, 0 is returned.
References nfnl_query(), nfct_handle::nfnlh, nfct_handle::nfnlssh_exp, NULL, and size.
Referenced by main(), nl_create_expect(), nl_destroy_expect(), nl_dump_expect_table(), nl_flush_expect_table(), and nl_get_expect().
int nfexp_send | ( | struct nfct_handle * | h, |
const enum nf_conntrack_query | qt, | ||
const void * | data | ||
) |
nfexp_send - send a query to ctnetlink
h | library handler |
qt | query type |
data | data required to send the query |
Like nfexp_query but we do not wait for the reply from ctnetlink. You can use nfexp_send() and nfexp_catch() to emulate nfexp_query(). This is particularly useful when the socket is non-blocking.
On error, -1 is returned and errno is explicitely set. On success, 0 is returned.
References nfnl_send(), nfct_handle::nfnlh, nfct_handle::nfnlssh_exp, NULL, and size.
Referenced by nl_send_expect_resync().