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| author | Philo Lu <lulie@linux.alibaba.com> | 2024-11-14 18:52:05 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2024-11-18 11:56:21 +0000 |
| commit | dab78a1745ab3c6001e1e4d50a9d09efef8e260d (patch) | |
| tree | 6b2b4afeef84ad08f4e69b67223d807608368319 /net/ipv4 | |
| parent | accdd51dc74ff65b7b7be1961b11723d228fbbbd (diff) | |
| download | lwn-dab78a1745ab3c6001e1e4d50a9d09efef8e260d.tar.gz lwn-dab78a1745ab3c6001e1e4d50a9d09efef8e260d.zip | |
net/udp: Add 4-tuple hash list basis
Add a new hash list, hash4, in udp table. It will be used to implement
4-tuple hash for connected udp sockets. This patch adds the hlist to
table, and implements helpers and the initialization. 4-tuple hash is
implemented in the following patch.
hash4 uses hlist_nulls to avoid moving wrongly onto another hlist due to
concurrent rehash, because rehash() can happen with lookup().
Co-developed-by: Cambda Zhu <cambda@linux.alibaba.com>
Signed-off-by: Cambda Zhu <cambda@linux.alibaba.com>
Co-developed-by: Fred Chen <fred.cc@alibaba-inc.com>
Signed-off-by: Fred Chen <fred.cc@alibaba-inc.com>
Co-developed-by: Yubing Qiu <yubing.qiuyubing@alibaba-inc.com>
Signed-off-by: Yubing Qiu <yubing.qiuyubing@alibaba-inc.com>
Signed-off-by: Philo Lu <lulie@linux.alibaba.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/udp.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 2fdac5fae2a8..0bc0881d6569 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -3427,7 +3427,8 @@ void __init udp_table_init(struct udp_table *table, const char *name) { unsigned int i, slot_size; - slot_size = sizeof(struct udp_hslot) + sizeof(struct udp_hslot_main); + slot_size = sizeof(struct udp_hslot) + sizeof(struct udp_hslot_main) + + udp_hash4_slot_size(); table->hash = alloc_large_system_hash(name, slot_size, uhash_entries, @@ -3482,7 +3483,8 @@ static struct udp_table __net_init *udp_pernet_table_alloc(unsigned int hash_ent if (!udptable) goto out; - slot_size = sizeof(struct udp_hslot) + sizeof(struct udp_hslot_main); + slot_size = sizeof(struct udp_hslot) + sizeof(struct udp_hslot_main) + + udp_hash4_slot_size(); udptable->hash = vmalloc_huge(hash_entries * slot_size, GFP_KERNEL_ACCOUNT); if (!udptable->hash) |