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raw: complete rcu conversion

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raw_diag_dump() can use rcu_read_lock() instead of read_lock()

Now the hashinfo lock is only used from process context,
in write mode only, we can convert it to a spinlock,
and we do not need to block BH anymore.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20220620100509.3493504-1-eric.dumazet@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Eric Dumazet
2022-06-20 03:05:09 -07:00
committed by Paolo Abeni
parent f9aefd6b2a
commit af185d8c76
3 changed files with 8 additions and 8 deletions
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4
include/net/raw.h
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@@ -32,7 +32,7 @@ int raw_rcv(struct sock *, struct sk_buff *);
#define RAW_HTABLE_SIZE MAX_INET_PROTOS
struct raw_hashinfo {
rwlock_t lock;
spinlock_t lock;
struct hlist_nulls_head ht[RAW_HTABLE_SIZE];
};
@@ -40,7 +40,7 @@ static inline void raw_hashinfo_init(struct raw_hashinfo *hashinfo)
{
int i;
rwlock_init(&hashinfo->lock);
spin_lock_init(&hashinfo->lock);
for (i = 0; i < RAW_HTABLE_SIZE; i++)
INIT_HLIST_NULLS_HEAD(&hashinfo->ht[i], i);
}