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socket tcp performance tweak: handle window update (call into tcpipi_thread) only once per recv for multi-segment receives

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This commit is contained in:
goldsimon 2017-03-06 22:22:22 +01:00
parent f0bc2fa968
commit b71d4477ea
1 changed files with 8 additions and 3 deletions
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11
src/api/sockets.c
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@ -834,7 +834,7 @@ lwip_listen(int s, int backlog)
static int static int
lwip_recv_tcp(struct lwip_sock *sock, void *mem, size_t len, int flags) lwip_recv_tcp(struct lwip_sock *sock, void *mem, size_t len, int flags)
{ {
u8_t apiflags; u8_t apiflags = NETCONN_NOAUTORCVD;
int recvd = 0; int recvd = 0;
int recv_left = len; int recv_left = len;
@ -873,8 +873,7 @@ lwip_recv_tcp(struct lwip_sock *sock, void *mem, size_t len, int flags)
sock->conn->callback(sock->conn, NETCONN_EVT_RCVPLUS, 0); sock->conn->callback(sock->conn, NETCONN_EVT_RCVPLUS, 0);
} }
} }
sock_set_errno(sock, 0); goto lwip_recv_tcp_done;
return recvd;
} }
/* We should really do some error checking here. */ /* We should really do some error checking here. */
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recv_tcp: p == NULL, error is \"%s\"!\n", LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recv_tcp: p == NULL, error is \"%s\"!\n",
@ -928,6 +927,12 @@ lwip_recv_tcp(struct lwip_sock *sock, void *mem, size_t len, int flags)
apiflags |= NETCONN_DONTBLOCK; apiflags |= NETCONN_DONTBLOCK;
/* @todo: do we need to support peeking more than one pbuf? */ /* @todo: do we need to support peeking more than one pbuf? */
} while ((recv_left > 0) || (flags & MSG_PEEK)); } while ((recv_left > 0) || (flags & MSG_PEEK));
lwip_recv_tcp_done:
if (recvd > 0) {
/* ensure window update after copying all data */
netconn_tcp_recvd(sock->conn, recvd);
}
sock_set_errno(sock, 0);
return recvd; return recvd;
} }