#include #include #include #include #include #include #include "link.h" #include "sock.h" #include "str.h" uint32_t wireless_bitrate(const char *ifname) { int sock, ret; uint32_t rate_in_mbit; struct iwreq iwr; sock = af_socket(AF_INET); memset(&iwr, 0, sizeof(iwr)); strlcpy(iwr.ifr_name, ifname, IFNAMSIZ); ret = ioctl(sock, SIOCGIWRATE, &iwr); if (!ret) rate_in_mbit = iwr.u.bitrate.value / 1000000; else rate_in_mbit = 0; close(sock); return rate_in_mbit; } int wireless_sigqual(const char *ifname, struct iw_statistics *stats) { int ret, sock; struct iwreq iwr; sock = af_socket(AF_INET); memset(&iwr, 0, sizeof(iwr)); strlcpy(iwr.ifr_name, ifname, IFNAMSIZ); iwr.u.data.pointer = (caddr_t) stats; iwr.u.data.length = sizeof(*stats); iwr.u.data.flags = 1; ret = ioctl(sock, SIOCGIWSTATS, &iwr); close(sock); return ret; } int wireless_rangemax_sigqual(const char *ifname) { int ret, sock, sigqual; struct iwreq iwr; struct iw_range iwrange; sock = af_socket(AF_INET); memset(&iwrange, 0, sizeof(iwrange)); memset(&iwr, 0, sizeof(iwr)); strlcpy(iwr.ifr_name, ifname, IFNAMSIZ); iwr.u.data.pointer = (caddr_t) &iwrange; iwr.u.data.length = sizeof(iwrange); iwr.u.data.flags = 0; ret = ioctl(sock, SIOCGIWRANGE, &iwr); if (!ret) sigqual = iwrange.max_qual.qual; else sigqual = 0; close(sock); return sigqual; } uint32_t ethtool_bitrate(const char *ifname) { int ret, sock; uint32_t bitrate; struct ifreq ifr; struct ethtool_cmd ecmd; sock = af_socket(AF_INET); memset(&ecmd, 0, sizeof(ecmd)); memset(&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, ifname, IFNAMSIZ); ecmd.cmd = ETHTOOL_GSET; ifr.ifr_data = (char *) &ecmd; ret = ioctl(sock, SIOCETHTOOL, &ifr); if (ret) { bitrate = 0; goto out; } bitrate = ethtool_cmd_speed(&ecmd); if (bitrate == SPEED_UNKNOWN) bitrate = 0; out: close(sock); return bitrate; } int ethtool_link(const char *ifname) { int ret, sock; struct ifreq ifr; struct ethtool_value ecmd; sock = af_socket(AF_INET); memset(&ecmd, 0, sizeof(ecmd)); memset(&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, ifname, IFNAMSIZ); ecmd.cmd = ETHTOOL_GLINK; ifr.ifr_data = (char *) &ecmd; ret = ioctl(sock, SIOCETHTOOL, &ifr); if (ret) ret = -EINVAL; else ret = !!ecmd.data; close(sock); return ret; } int ethtool_drvinf(const char *ifname, struct ethtool_drvinfo *drvinf) { int ret, sock; struct ifreq ifr; sock = af_socket(AF_INET); memset(drvinf, 0, sizeof(*drvinf)); memset(&ifr, 0, sizeof(ifr)); strlcpy(ifr.ifr_name, ifname, IFNAMSIZ); drvinf->cmd = ETHTOOL_GDRVINFO; ifr.ifr_data = (char *) drvinf; ret = ioctl(sock, SIOCETHTOOL, &ifr); close(sock); return ret; }
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authorJan Kara <jack@suse.cz>2016-08-10 17:22:44 +0200
committerDan Williams <dan.j.williams@intel.com>2016-12-26 20:29:24 -0800
commitc6dcf52c23d2d3fb5235cec42d7dd3f786b87d55 (patch)
tree7e63a6c0225a769e679b194f54b5723e4cfba385 /include
parente568df6b84ff05a22467503afc11bee7a6ba0700 (diff)
mm: Invalidate DAX radix tree entries only if appropriate
Currently invalidate_inode_pages2_range() and invalidate_mapping_pages() just delete all exceptional radix tree entries they find. For DAX this is not desirable as we track cache dirtiness in these entries and when they are evicted, we may not flush caches although it is necessary. This can for example manifest when we write to the same block both via mmap and via write(2) (to different offsets) and fsync(2) then does not properly flush CPU caches when modification via write(2) was the last one. Create appropriate DAX functions to handle invalidation of DAX entries for invalidate_inode_pages2_range() and invalidate_mapping_pages() and wire them up into the corresponding mm functions. Acked-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'include')