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msg_in.c File Reference
SNMP input message processing (RFC1157).
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static err_t snmp_pdu_header_check (struct pbuf *p, u16_t ofs, u16_t pdu_len, u16_t *ofs_ret, struct snmp_msg_pstat *m_stat) Checks and decodes incoming SNMP message header, logs header errors. void snmp_init (void) Starts SNMP Agent. static void snmp_msg_get_event (u8_t request_id, struct snmp_msg_pstat *msg_ps) Service an internal or external event for SNMP GET. static void snmp_msg_getnext_event (u8_t request_id, struct snmp_msg_pstat *msg_ps) Service an internal or external event for SNMP GETNEXT. static void snmp_msg_set_event (u8_t request_id, struct snmp_msg_pstat *msg_ps) Service an internal or external event for SNMP SET. void snmp_msg_event (u8_t request_id) Handle one internal or external event. struct snmp_varbind * snmp_varbind_alloc (struct snmp_obj_id *oid, u8_t type, u8_t len) Varbind-list functions. const s32_t snmp_version = 0 SNMP v1 == 0. const char snmp_publiccommunity [7] = "public" default SNMP community string
Detailed Description
SNMP input message processing (RFC1157).
Definition in file msg_in.c .
Function Documentation
Starts SNMP Agent.
Agent setup, start listening to port 161.
Allocates UDP pcb and binds it to IP_ADDR_ANY port 161.
Definition at line 71 of file msg_in.c .
void snmp_msg_event
(
u8_t
request_id )
Handle one internal or external event.
Handle an internal (recv) or external (private response) event.
Called for one async event. (recv external/private answer)
Parameters:
request_id identifies requests from 0 to (SNMP_CONCURRENT_REQUESTS-1)
Definition at line 784 of file msg_in.c .
static void snmp_msg_get_event
(
u8_t
request_id ,
struct snmp_msg_pstat *
msg_ps
)
[static]
Service an internal or external event for SNMP GET.
Parameters:
request_id identifies requests from 0 to (SNMP_CONCURRENT_REQUESTS-1) msg_ps points to the assosicated message process state
test object identifier for .iso.org.dod.internet prefix
Definition at line 147 of file msg_in.c .
static void snmp_msg_getnext_event
(
u8_t
request_id ,
struct snmp_msg_pstat *
msg_ps
)
[static]
Service an internal or external event for SNMP GETNEXT.
Parameters:
request_id identifies requests from 0 to (SNMP_CONCURRENT_REQUESTS-1) msg_ps points to the assosicated message process state
Definition at line 380 of file msg_in.c .
static void snmp_msg_set_event
(
u8_t
request_id ,
struct snmp_msg_pstat *
msg_ps
)
[static]
Service an internal or external event for SNMP SET.
Parameters:
request_id identifies requests from 0 to (SNMP_CONCURRENT_REQUESTS-1) msg_ps points to the assosicated message process state
set_value_a()
test object identifier for .iso.org.dod.internet prefix
Definition at line 525 of file msg_in.c .
static err_t snmp_pdu_header_check
(
struct pbuf *
p ,
u16_t
ofs ,
u16_t
pdu_len ,
u16_t *
ofs_ret ,
struct snmp_msg_pstat *
m_stat
)
[static]
Checks and decodes incoming SNMP message header, logs header errors.
Parameters:
p points to pbuf chain of SNMP message (UDP payload) ofs points to first octet of SNMP message pdu_len the length of the UDP payload ofs_ret returns the ofset of the variable bindings m_stat points to the current message request state return
Returns:
ERR_OK SNMP header is sane and accepted
ERR_ARG SNMP header is either malformed or rejected
Definition at line 903 of file msg_in.c .
struct snmp_varbind* snmp_varbind_alloc
(
struct snmp_obj_id *
oid ,
u8_t
type ,
u8_t
len
)
[read]
Varbind-list functions.
Definition at line 1303 of file msg_in.c .
Variable Documentation
default SNMP community string
Agent default "public" community string.
Definition at line 54 of file msg_in.c .
SNMP v1 == 0.
Agent Version constant, 0 = v1 oddity.
Definition at line 52 of file msg_in.c .
Donatien Garnier
1.7.2