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netconn: add callback arg storage

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This reuses the member 'int socket' by making it a union containing
both int and void pointer.

See bug #56593.

Signed-off-by: Simon Goldschmidt <goldsimon@gmx.de>
Suggested-by: Wilfred <wilfrednilsen@hotmail.com>
This commit is contained in:
Simon Goldschmidt 2019-07-13 20:46:36 +02:00
parent f37925dad2
commit 5465fdfd69
3 changed files with 15 additions and 14 deletions
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4
src/api/api_msg.c
View File

@ -759,10 +759,8 @@ netconn_alloc(enum netconn_type t, netconn_callback callback)
sys_mbox_set_invalid(&conn->acceptmbox);
#endif
conn->state = NETCONN_NONE;
#if LWIP_SOCKET
/* initialize socket to -1 since 0 is a valid socket */
conn->socket = -1;
#endif /* LWIP_SOCKET */
conn->callback_arg.socket = -1;
conn->callback = callback;
#if LWIP_TCP
conn->current_msg = NULL;

14
src/api/sockets.c
View File

@ -661,8 +661,8 @@ lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen)
* so nsock->rcvevent is >= 1 here!
*/
SYS_ARCH_PROTECT(lev);
recvevent = (s16_t)(-1 - newconn->socket);
newconn->socket = newsock;
recvevent = (s16_t)(-1 - newconn->callback_arg.socket);
newconn->callback_arg.socket = newsock;
SYS_ARCH_UNPROTECT(lev);
if (newconn->callback) {
@ -1729,7 +1729,7 @@ lwip_socket(int domain, int type, int protocol)
set_errno(ENFILE);
return -1;
}
conn->socket = i;
conn->callback_arg.socket = i;
done_socket(&sockets[i - LWIP_SOCKET_OFFSET]);
LWIP_DEBUGF(SOCKETS_DEBUG, ("%d\n", i));
set_errno(0);
@ -2478,7 +2478,7 @@ event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len)
/* Get socket */
if (conn) {
s = conn->socket;
s = conn->callback_arg.socket;
if (s < 0) {
/* Data comes in right away after an accept, even though
* the server task might not have created a new socket yet.
@ -2486,16 +2486,16 @@ event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len)
* will use the data later. Note that only receive events
* can happen before the new socket is set up. */
SYS_ARCH_PROTECT(lev);
if (conn->socket < 0) {
if (conn->callback_arg.socket < 0) {
if (evt == NETCONN_EVT_RCVPLUS) {
/* conn->socket is -1 on initialization
lwip_accept adjusts sock->recvevent if conn->socket < -1 */
conn->socket--;
conn->callback_arg.socket--;
}
SYS_ARCH_UNPROTECT(lev);
return;
}
s = conn->socket;
s = conn->callback_arg.socket;
SYS_ARCH_UNPROTECT(lev);
}

11
src/include/lwip/api.h
View File

@ -246,10 +246,10 @@ struct netconn {
all threads when closing while threads are waiting. */
int mbox_threads_waiting;
#endif
/** only used for socket layer */
#if LWIP_SOCKET
int socket;
#endif /* LWIP_SOCKET */
union {
int socket;
void *ptr;
} callback_arg;
#if LWIP_SO_SNDTIMEO
/** timeout to wait for sending data (which means enqueueing data for sending
in internal buffers) in milliseconds */
@ -373,6 +373,9 @@ err_t netconn_err(struct netconn *conn);
#define netconn_clear_flags(conn, clr_flags) do { (conn)->flags = (u8_t)((conn)->flags & (u8_t)(~(clr_flags) & 0xff)); } while(0)
#define netconn_is_flag_set(conn, flag) (((conn)->flags & (flag)) != 0)
#define netconn_set_callback_arg(conn, arg) do { (conn)->callback_arg.ptr = (arg); } while(0)
#define netconn_get_callback_arg(conn) ((conn)->callback_arg.ptr)
/** Set the blocking status of netconn calls (@todo: write/send is missing) */
#define netconn_set_nonblocking(conn, val) do { if(val) { \
netconn_set_flags(conn, NETCONN_FLAG_NON_BLOCKING); \