#include #include #include #include #include #include #include "sock.h" #include "die.h" #include "str.h" #include "linktype.h" #include "built_in.h" #include "sysctl.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: %s\n", strerror(errno)); return sock; } int pf_socket(void) { int sock = socket(PF_PACKET, SOCK_RAW, 0); if (unlikely(sock < 0)) panic("Creation of PF socket failed: %s\n", strerror(errno)); return sock; } static int pf_socket_dgram(void) { int sock = socket(PF_PACKET, SOCK_DGRAM, 0); if (unlikely(sock < 0)) panic("Creation of PF dgram socket failed: %s\n", strerror(errno)); return sock; } int pf_socket_type(uint32_t type) { switch (type) { case LINKTYPE_LINUX_SLL: return pf_socket_dgram(); default: return pf_socket(); } } /* Available in kernel >= 3.14 * in commit d346a3fae3 (packet: introduce PACKET_QDISC_BYPASS socket option) */ void set_sock_qdisc_bypass(int fd, bool verbose) { int ret, val = 1; ret = setsockopt(fd, SOL_PACKET, PACKET_QDISC_BYPASS, &val, sizeof(val)); if (ret < 0) { if (errno == ENOPROTOOPT) { if (verbose) printf("No kernel support for PACKET_QDISC_BYPASS" " (kernel < 3.14?)\n"); } else perror("Cannot set PACKET_QDISC_BYPASS"); } else if (verbose) printf("Enabled kernel qdisc bypass\n"); } 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: %s\n", strerror(errno)); } 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: %s\n", strerror(errno)); } 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: %s\n", strerror(errno)); } 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: %s\n", strerror(errno)); } 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: %s\n", strerror(errno)); 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: %s\n", strerror(errno)); } 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] = "net/core/rmem_max", [sock_rmem_def] = "net/core/rmem_default", [sock_wmem_max] = "net/core/wmem_max", [sock_wmem_def] = "net/core/wmem_default", }; static int get_system_socket_mem(int which) { int val; if (sysctl_get_int(sock_mem[which], &val)) return -1; return val; } static void set_system_socket_mem(int which, int val) { if (val > 0 && sysctl_set_int(sock_mem[which], val)) printf("Cannot set system socket memory in %s%s: %s\n", SYSCTL_PROC_PATH, sock_mem[which], strerror(errno)); } 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]); } >mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-11 11:17:54 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-11 11:17:54 -0800
commit69973b830859bc6529a7a0468ba0d80ee5117826 (patch)
tree5f11fe15ed9d9a3ab9c92242030e54b73ecdce45 /include/drm/drm_mode_config.h
parent2e4333c14de06a333783d6812cf3c4998f78b0c8 (diff)
Linux 4.9
Diffstat (limited to 'include/drm/drm_mode_config.h')