diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2014-05-19 17:59:50 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2014-05-19 18:06:50 +0200 |
| commit | 922bd80fc33b5b90eb34b1485ebcf3c7b2e61618 (patch) | |
| tree | 7f03c80775ba39c43d34f8038583db768b311029 /net | |
| parent | c1e5f4714d591cc0a5e986613fdefa61abe98ac2 (diff) | |
| download | linux-922bd80fc33b5b90eb34b1485ebcf3c7b2e61618.tar.bz2 | |
cfg80211: constify wowlan/coalesce mask/pattern pointers
This requires changing the nl80211 parsing code a bit to use
intermediate pointers for the allocation, but clarifies the
API towards the drivers.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/wireless/nl80211.c | 39 |
1 files changed, 22 insertions, 17 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index ca19b1520389..49adf58646e6 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -8554,6 +8554,8 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], rem) { + u8 *mask_pat; + nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), nla_len(pat), NULL); err = -EINVAL; @@ -8577,19 +8579,18 @@ static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) goto error; new_triggers.patterns[i].pkt_offset = pkt_offset; - new_triggers.patterns[i].mask = - kmalloc(mask_len + pat_len, GFP_KERNEL); - if (!new_triggers.patterns[i].mask) { + mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); + if (!mask_pat) { err = -ENOMEM; goto error; } - new_triggers.patterns[i].pattern = - new_triggers.patterns[i].mask + mask_len; - memcpy(new_triggers.patterns[i].mask, - nla_data(pat_tb[NL80211_PKTPAT_MASK]), + new_triggers.patterns[i].mask = mask_pat; + memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len); + mask_pat += mask_len; + new_triggers.patterns[i].pattern = mask_pat; new_triggers.patterns[i].pattern_len = pat_len; - memcpy(new_triggers.patterns[i].pattern, + memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len); i++; @@ -8781,6 +8782,8 @@ static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], rem) { + u8 *mask_pat; + nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), nla_len(pat), NULL); if (!pat_tb[NL80211_PKTPAT_MASK] || @@ -8802,17 +8805,19 @@ static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, return -EINVAL; new_rule->patterns[i].pkt_offset = pkt_offset; - new_rule->patterns[i].mask = - kmalloc(mask_len + pat_len, GFP_KERNEL); - if (!new_rule->patterns[i].mask) + mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); + if (!mask_pat) return -ENOMEM; - new_rule->patterns[i].pattern = - new_rule->patterns[i].mask + mask_len; - memcpy(new_rule->patterns[i].mask, - nla_data(pat_tb[NL80211_PKTPAT_MASK]), mask_len); + + new_rule->patterns[i].mask = mask_pat; + memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), + mask_len); + + mask_pat += mask_len; + new_rule->patterns[i].pattern = mask_pat; new_rule->patterns[i].pattern_len = pat_len; - memcpy(new_rule->patterns[i].pattern, - nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), pat_len); + memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), + pat_len); i++; } |