#include #include #include #include #include #include #include #include #include "irq.h" #include "str.h" #include "die.h" int device_irq_number(const char *ifname) { int irq = 0; char buff[128], sysname[128]; FILE *fp; if (!strncmp("lo", ifname, strlen("lo"))) return 0; slprintf(sysname, sizeof(sysname), "/sys/class/net/%s/device/irq", ifname); fp = fopen(sysname, "r"); if (!fp) return -ENOENT; memset(buff, 0, sizeof(buff)); if (fgets(buff, sizeof(buff), fp) != NULL) { buff[sizeof(buff) - 1] = 0; irq = atoi(buff); } fclose(fp); return irq; } static char nic_irq_affinity_list[128]; static bool nic_irq_stored = false; static int nic_irq = -1; static void device_save_irq_affinity_list(void) { int ret, fd; char file[128]; bug_on(nic_irq_stored); slprintf(file, sizeof(file), "/proc/irq/%d/smp_affinity_list", nic_irq); fd = open(file, O_RDONLY); if (fd < 0) return; memset(nic_irq_affinity_list, 0, sizeof(nic_irq_affinity_list)); ret = read(fd, nic_irq_affinity_list, sizeof(nic_irq_affinity_list)); if (ret < 0) panic("Cannot store NIC IRQ affinity!\n"); close(fd); nic_irq_stored = true; } void device_restore_irq_affinity_list(void) { int ret, fd; char file[128]; if (!nic_irq_stored) return; bug_on(nic_irq == -1); slprintf(file, sizeof(file), "/proc/irq/%d/smp_affinity_list", nic_irq); fd = open(file, O_WRONLY); if (fd < 0) return; ret = write(fd, nic_irq_affinity_list, sizeof(nic_irq_affinity_list)); if (ret < 0) panic("Cannot restore NIC IRQ affinity!\n"); close(fd); } int device_set_irq_affinity_list(int irq, unsigned long from, unsigned long to) { int ret, fd; char file[128], list[64]; if (unlikely(irq == 0)) return 0; if (!nic_irq_stored) { nic_irq = irq; device_save_irq_affinity_list(); } slprintf(file, sizeof(file), "/proc/irq/%d/smp_affinity_list", irq); slprintf(list, sizeof(list), "%lu-%lu\n", from, to); fd = open(file, O_WRONLY); if (fd < 0) return -ENOENT; ret = write(fd, list, strlen(list)); close(fd); return ret; } int device_set_irq_affinity(int irq, unsigned long cpu) { return device_set_irq_affinity_list(irq, cpu, cpu); } log/'>

diff options

author	Ido Schimmel <idosch@mellanox.com>	2017-02-06 16:20:17 +0100
committer	David S. Miller <davem@davemloft.net>	2017-02-06 11:25:57 -0500
commit	fd76d9105b8e5b80bee58311a5c88d6594622c00 (patch)
tree	4ea867c94492dd5105028711fd612174495abb18
parent	01b1aa359dd481579de6047af8d7874e6e529585 (diff)

mlxsw: spectrum_router: Fix typo in comment

Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>

Diffstat

-rw-r--r--

drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c

1 files changed, 1 insertions, 1 deletions


context:
space:
mode: