#include #include #include #include #include #include #include "sock.h" #include "die.h" #include "str.h" #include "built_in.h" int af_socket(int af) { int sock; if (unlikely(af != AF_INET && af != AF_INET6)) panic("Wrong AF socket type!\n"); sock = socket(af, SOCK_DGRAM, 0); if (unlikely(sock < 0)) panic("Creation AF socket failed!\n"); return sock; } int pf_socket(void) { int sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); if (unlikely(sock < 0)) panic("Creation of PF socket failed!\n"); return sock; } void set_sock_prio(int fd, int prio) { int ret, val = prio; ret = setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &val, sizeof(val)); if (unlikely(ret)) panic("Cannot set socket priority!\n"); } void set_nonblocking(int fd) { int ret = fcntl(fd, F_SETFL, fcntl(fd, F_GETFD, 0) | O_NONBLOCK); if (unlikely(ret < 0)) panic("Cannot fcntl!\n"); } int set_nonblocking_sloppy(int fd) { return fcntl(fd, F_SETFL, fcntl(fd, F_GETFD, 0) | O_NONBLOCK); } void set_socket_keepalive(int fd) { int ret, one = 1; ret = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &one, sizeof(one)); if (unlikely(ret)) panic("Cannot set TCP keepalive!\n"); } void set_tcp_nodelay(int fd) { int ret, one = 1; ret = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &one, sizeof(one)); if (unlikely(ret)) panic("Cannot set TCP nodelay!\n"); } int set_ipv6_only(int fd) { int one = 1; return setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &one, sizeof(one)); } int set_reuseaddr(int fd) { int ret, one = 1; ret = setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)); if (unlikely(ret < 0)) panic("Cannot reuse addr!\n"); return 0; } void set_mtu_disc_dont(int fd) { int mtu = IP_PMTUDISC_DONT, ret; ret = setsockopt(fd, SOL_IP, IP_MTU_DISCOVER, &mtu, sizeof(mtu)); if (unlikely(ret)) panic("Cannot set MTU discovery options!\n"); } enum { sock_rmem_max = 0, sock_rmem_def, sock_wmem_max, sock_wmem_def, }; #define SMEM_SUG_MAX 104857600 #define SMEM_SUG_DEF 4194304 static const char *const sock_mem[] = { [sock_rmem_max] = "/proc/sys/net/core/rmem_max", [sock_rmem_def] = "/proc/sys/net/core/rmem_default", [sock_wmem_max] = "/proc/sys/net/core/wmem_max", [sock_wmem_def] = "/proc/sys/net/core/wmem_default", }; static int get_system_socket_mem(int which) { int fd, val = -1; ssize_t ret; const char *file = sock_mem[which]; char buff[64]; fd = open(file, O_RDONLY); if (fd < 0) return val; ret = read(fd, buff, sizeof(buff)); if (ret > 0) val = atoi(buff); close(fd); return val; } static void set_system_socket_mem(int which, int val) { int fd; const char *file = sock_mem[which]; ssize_t ret; char buff[64]; fd = open(file, O_WRONLY); if (fd < 0) return; memset(buff, 0, sizeof(buff)); slprintf(buff, sizeof(buff), "%d", val); ret = write(fd, buff, strlen(buff)); ret = ret; close(fd); } void set_system_socket_memory(int *vals, size_t len) { bug_on(len != 4); if ((vals[0] = get_system_socket_mem(sock_rmem_max)) < SMEM_SUG_MAX) set_system_socket_mem(sock_rmem_max, SMEM_SUG_MAX); if ((vals[1] = get_system_socket_mem(sock_rmem_def)) < SMEM_SUG_DEF) set_system_socket_mem(sock_rmem_def, SMEM_SUG_DEF); if ((vals[2] = get_system_socket_mem(sock_wmem_max)) < SMEM_SUG_MAX) set_system_socket_mem(sock_wmem_max, SMEM_SUG_MAX); if ((vals[3] = get_system_socket_mem(sock_wmem_def)) < SMEM_SUG_DEF) set_system_socket_mem(sock_wmem_def, SMEM_SUG_DEF); } void reset_system_socket_memory(int *vals, size_t len) { bug_on(len != 4); set_system_socket_mem(sock_rmem_max, vals[0]); set_system_socket_mem(sock_rmem_def, vals[1]); set_system_socket_mem(sock_wmem_max, vals[2]); set_system_socket_mem(sock_wmem_def, vals[3]); } lue='1'>ignoremode:

author	Marc Kleine-Budde <mkl@pengutronix.de>	2015-08-31 21:03:29 +0200
committer	Marc Kleine-Budde <mkl@pengutronix.de>	2017-02-06 15:13:41 +0100
commit	4bd888a80b1d48dbd83f1cbf806e923a30051958 (patch)
tree	088e2fbfb38f81a35399fc8e5b1226c56cc4db90
parent	30164759db1bb1062bdf0f92451f57ed295cfa48 (diff)

can: flexcan: activate individual RX masking and initialize reg_rximr

Modern flexcan IP cores support two RX modes. One is using the 6 fames deep hardware FIFO, the other is using up to 64 mailboxes (in non FIFO mode). For now only the HW FIFO mode is activated. In order to make use of the RX mailboxes the individual RX masking feature has to be activated, otherwise matching mailboxes are overwritten during the reception process. This however switches on the individual RX masking, which uses reg_rximr registers for masking. This patch activates the individual RX masking feature unconditionally and initializes the mask registers (reg_rximr) with 0x0 == "don't care", which switches off any filtering. Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

Diffstat

-rw-r--r--

drivers/net/can/flexcan.c

1 files changed, 7 insertions, 1 deletions