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altcp: allocate altcp_pcbs from a pool, not from heap (new option MEMP_NUM_ALTCP_PCB defaults to MEMP_NUM_TCP_PCB)

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This commit is contained in:
goldsimon 2017-04-05 12:17:15 +02:00
parent 0f4ad57033
commit b34f2d5605
4 changed files with 17 additions and 4 deletions
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6
src/core/altcp.c
View File

@ -59,8 +59,7 @@ extern const struct altcp_functions altcp_tcp_functions;
struct altcp_pcb *
altcp_alloc(void)
{
/* FIXME: pool alloc */
struct altcp_pcb *ret = (struct altcp_pcb *)mem_malloc(sizeof(struct altcp_pcb));
struct altcp_pcb *ret = (struct altcp_pcb *)memp_malloc(MEMP_ALTCP_PCB);
if (ret != NULL) {
memset(ret, 0, sizeof(struct altcp_pcb));
}
@ -70,9 +69,8 @@ altcp_alloc(void)
void
altcp_free(struct altcp_pcb *conn)
{
/* FIXME: pool alloc */
if (conn) {
mem_free(conn);
memp_free(MEMP_ALTCP_PCB, conn);
}
}

1
src/core/memp.c
View File

@ -57,6 +57,7 @@
#include "lwip/udp.h"
#include "lwip/tcp.h"
#include "lwip/priv/tcp_priv.h"
#include "lwip/altcp.h"
#include "lwip/ip4_frag.h"
#include "lwip/netbuf.h"
#include "lwip/api.h"

10
src/include/lwip/opt.h
View File

@ -399,6 +399,16 @@
#define MEMP_NUM_TCP_SEG 16
#endif
/**
* MEMP_NUM_ALTCP_PCB: the number of simultaneously active altcp layer pcbs.
* (requires the LWIP_ALTCP option)
* Connections with multiple layers require more than one altcp_pcb (e.g. TLS
* over TCP requires 2 altcp_pcbs, one for TLS and one for TCP).
*/
#if !defined MEMP_NUM_ALTCP_PCB || defined __DOXYGEN__
#define MEMP_NUM_ALTCP_PCB MEMP_NUM_TCP_PCB
#endif
/**
* MEMP_NUM_REASSDATA: the number of IP packets simultaneously queued for
* reassembly (whole packets, not fragments!)

4
src/include/lwip/priv/memp_std.h
View File

@ -52,6 +52,10 @@ LWIP_MEMPOOL(TCP_PCB_LISTEN, MEMP_NUM_TCP_PCB_LISTEN, sizeof(struct tcp_pcb_lis
LWIP_MEMPOOL(TCP_SEG, MEMP_NUM_TCP_SEG, sizeof(struct tcp_seg), "TCP_SEG")
#endif /* LWIP_TCP */
#if LWIP_ALTCP && LWIP_TCP
LWIP_MEMPOOL(ALTCP_PCB, MEMP_NUM_ALTCP_PCB, sizeof(struct altcp_pcb), "ALTCP_PCB")
#endif /* LWIP_ALTCP && LWIP_TCP */
#if LWIP_IPV4 && IP_REASSEMBLY
LWIP_MEMPOOL(REASSDATA, MEMP_NUM_REASSDATA, sizeof(struct ip_reassdata), "REASSDATA")
#endif /* LWIP_IPV4 && IP_REASSEMBLY */