Commit b58a1858 authored by stephen hemminger's avatar stephen hemminger Committed by David S. Miller

netvsc: simplify get next send section

Use kernel for_each_clear_bit macro to simplify finding next
available send section.
Signed-off-by: default avatarStephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6c80f3fc
...@@ -680,27 +680,15 @@ static void netvsc_send_completion(struct netvsc_device *net_device, ...@@ -680,27 +680,15 @@ static void netvsc_send_completion(struct netvsc_device *net_device,
static u32 netvsc_get_next_send_section(struct netvsc_device *net_device) static u32 netvsc_get_next_send_section(struct netvsc_device *net_device)
{ {
unsigned long index; unsigned long *map_addr = net_device->send_section_map;
u32 max_words = net_device->map_words; unsigned int i;
unsigned long *map_addr = (unsigned long *)net_device->send_section_map;
u32 section_cnt = net_device->send_section_cnt; for_each_clear_bit(i, map_addr, net_device->map_words) {
int ret_val = NETVSC_INVALID_INDEX; if (sync_test_and_set_bit(i, map_addr) == 0)
int i; return i;
int prev_val;
for (i = 0; i < max_words; i++) {
if (!~(map_addr[i]))
continue;
index = ffz(map_addr[i]);
prev_val = sync_test_and_set_bit(index, &map_addr[i]);
if (prev_val)
continue;
if ((index + (i * BITS_PER_LONG)) >= section_cnt)
break;
ret_val = (index + (i * BITS_PER_LONG));
break;
} }
return ret_val;
return NETVSC_INVALID_INDEX;
} }
static u32 netvsc_copy_to_send_buf(struct netvsc_device *net_device, static u32 netvsc_copy_to_send_buf(struct netvsc_device *net_device,
......
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