diff options
Diffstat (limited to 'system-linux.c')
| -rw-r--r-- | system-linux.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/system-linux.c b/system-linux.c index 21385fc..9ff1532 100644 --- a/system-linux.c +++ b/system-linux.c @@ -51,6 +51,7 @@ #include <fcntl.h> #include <glob.h> #include <time.h> +#include <unistd.h> #include <netlink/msg.h> #include <netlink/attr.h> @@ -1055,6 +1056,38 @@ system_if_get_settings(struct device *dev, struct device_settings *s) } } +static void +system_if_set_rps_xps_val(const char *path, int val) +{ + char val_buf[8]; + glob_t gl; + int i; + + if (glob(path, 0, NULL, &gl)) + return; + + snprintf(val_buf, sizeof(val_buf), "%x", val); + for (i = 0; i < gl.gl_pathc; i++) + system_set_sysctl(gl.gl_pathv[i], val_buf); +} + +static void +system_if_apply_rps_xps(struct device *dev, struct device_settings *s) +{ + long n_cpus = sysconf(_SC_NPROCESSORS_ONLN); + int val; + + if (n_cpus < 2) + return; + + val = (1 << n_cpus) - 1; + snprintf(dev_buf, sizeof(dev_buf), "/sys/class/net/%s/queues/*/rps_cpus", dev->ifname); + system_if_set_rps_xps_val(dev_buf, s->rps ? val : 0); + + snprintf(dev_buf, sizeof(dev_buf), "/sys/class/net/%s/queues/*/xps_cpus", dev->ifname); + system_if_set_rps_xps_val(dev_buf, s->xps ? val : 0); +} + void system_if_apply_settings(struct device *dev, struct device_settings *s, unsigned int apply_mask) { @@ -1116,6 +1149,8 @@ system_if_apply_settings(struct device *dev, struct device_settings *s, unsigned snprintf(buf, sizeof(buf), "%d", s->neigh6reachabletime); system_set_neigh6reachabletime(dev, buf); } + + system_if_apply_rps_xps(dev, s); } int system_if_up(struct device *dev) |