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net: provide dev_lstats_read() helper

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Many network drivers use hand-coded implementation of the same thing,
let's factorize things so that u64_stats_t adoption is done once.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2019-11-07 16:27:14 -08:00
committed by David S. Miller
parent 0f030bdb16
commit de7d5084d8
2 changed files with 19 additions and 7 deletions
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2
include/linux/netdevice.h
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@@ -2401,6 +2401,8 @@ struct pcpu_lstats {
struct u64_stats_sync syncp;
} __aligned(2 * sizeof(u64));
void dev_lstats_read(struct net_device *dev, u64 *packets, u64 *bytes);
#define __netdev_alloc_pcpu_stats(type, gfp) \
({ \
typeof(type) __percpu *pcpu_stats = alloc_percpu_gfp(type, gfp);\