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SNMP: use PBUF_RAM for sending, PBUF_POOL is mostly used for RX only (if this isn't followed, tcp can get stuck when ACKs don't come through - unless some PBUF_POOL pbufs are reserved for such RX)

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This commit is contained in:
goldsimon 2015-10-07 10:41:03 +02:00
parent 77f906376e
commit 15bb334e81
1 changed files with 3 additions and 3 deletions
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6
src/core/snmp/msg_out.c
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@ -128,7 +128,7 @@ snmp_send_response(struct snmp_msg_pstat *m_stat)
tot_len = snmp_resp_header_sum(m_stat, tot_len);
/* try allocating pbuf(s) for complete response */
p = pbuf_alloc(PBUF_TRANSPORT, tot_len, PBUF_POOL);
p = pbuf_alloc(PBUF_TRANSPORT, tot_len, PBUF_RAM);
if (p == NULL) {
LWIP_DEBUGF(SNMP_MSG_DEBUG, ("snmp_snd_response() tooBig\n"));
@ -139,7 +139,7 @@ snmp_send_response(struct snmp_msg_pstat *m_stat)
tot_len = snmp_varbind_list_sum(&emptyvb);
tot_len = snmp_resp_header_sum(m_stat, tot_len);
/* retry allocation once for header and empty varbind-list */
p = pbuf_alloc(PBUF_TRANSPORT, tot_len, PBUF_POOL);
p = pbuf_alloc(PBUF_TRANSPORT, tot_len, PBUF_RAM);
}
if (p != NULL) {
/* first pbuf alloc try or retry alloc success */
@ -250,7 +250,7 @@ snmp_send_trap(s8_t generic_trap, const struct snmp_obj_id *eoid, s32_t specific
tot_len = snmp_trap_header_sum(&trap_msg, tot_len);
/* allocate pbuf(s) */
p = pbuf_alloc(PBUF_TRANSPORT, tot_len, PBUF_POOL);
p = pbuf_alloc(PBUF_TRANSPORT, tot_len, PBUF_RAM);
if (p != NULL) {
u16_t ofs;