#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]); } class='label'>context:space:mode:
authorTakashi Iwai <tiwai@suse.de>2017-01-11 19:49:27 +0100
committerTakashi Iwai <tiwai@suse.de>2017-01-11 19:49:27 +0100
commit6cf4569ce3561dec560147e6051959d6896b23d1 (patch)
tree2b3dca47673824975c35a708a6d9d24ff46a2771 /Documentation/vm/numa
parent2e40795c3bf344cfb5220d94566205796e3ef19a (diff)
parent42e0ebdef53d91891939a475c6ef23970829ff99 (diff)
Merge tag 'asoc-fix-v4.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v4.10 As well as the usual smattering of driver specific fixes collected since the merge window this has one particularly important fix to the core for handling of aux_devs which was broken during the merge window by some of the componentization refactoring.
Diffstat (limited to 'Documentation/vm/numa')