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Commit 922bd80f authored by Johannes Berg's avatar Johannes Berg
Browse files

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: default avatarJohannes Berg <johannes.berg@intel.com>
parent c1e5f471

drivers/net/wireless/ti/wlcore/main.c

+1 −1
Original line number Diff line number Diff line
@@ -1416,7 +1416,7 @@ void wl1271_rx_filter_free(struct wl12xx_rx_filter *filter) 


int wl1271_rx_filter_alloc_field(struct wl12xx_rx_filter *filter,

				 u16 offset, u8 flags,

				 u8 *pattern, u8 len)

				 const u8 *pattern, u8 len)

{

	struct wl12xx_rx_filter_field *field;

drivers/net/wireless/ti/wlcore/wlcore_i.h

+2 −2
Original line number Diff line number Diff line
@@ -513,7 +513,7 @@ void wl12xx_queue_recovery_work(struct wl1271 *wl); 
size_t wl12xx_copy_fwlog(struct wl1271 *wl, u8 *memblock, size_t maxlen);

int wl1271_rx_filter_alloc_field(struct wl12xx_rx_filter *filter,

				 u16 offset, u8 flags,

					u8 *pattern, u8 len);

				 const u8 *pattern, u8 len);

void wl1271_rx_filter_free(struct wl12xx_rx_filter *filter);

struct wl12xx_rx_filter *wl1271_rx_filter_alloc(void);

int wl1271_rx_filter_get_fields_size(struct wl12xx_rx_filter *filter);

include/net/cfg80211.h

+1 −1
Original line number Diff line number Diff line
@@ -1827,7 +1827,7 @@ struct cfg80211_pmksa { 
 * memory, free @mask only!

 */

struct cfg80211_pkt_pattern {

	u8 *mask, *pattern;

	const u8 *mask, *pattern;

	int pattern_len;

	int pkt_offset;

};

net/wireless/nl80211.c

+22 −17
Original line number Diff line number Diff line
@@ -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++;

	}